From 09248e0897feead02c868670970a15925e261726 Mon Sep 17 00:00:00 2001
From: ochafik <ochafik@google.com>
Date: Fri, 1 Mar 2024 14:11:13 +0000
Subject: [PATCH 01/98] json: fix arrays (disallow `[,1]`)

---
 examples/commit.txt                | 10 ++++++++++
 examples/json-schema-to-grammar.py | 14 +++++++-------
 2 files changed, 17 insertions(+), 7 deletions(-)
 create mode 100644 examples/commit.txt

diff --git a/examples/commit.txt b/examples/commit.txt
new file mode 100644
index 0000000000000..530bd2214b2a0
--- /dev/null
+++ b/examples/commit.txt
@@ -0,0 +1,10 @@
+- Adds support for `required` vs. optional properties, without the risk for repetitions.
+- Adds support for `additionalProperties`
+- Fixes handling of Arrays (`[ , 1]` no longer possible)
+- Fixes ordering: retain original order unless overridden (rather than alphabetical)
+- Add support for `$ref`
+
+https://github.com/vega/ts-json-schema-generator
+
+
+Before
diff --git a/examples/json-schema-to-grammar.py b/examples/json-schema-to-grammar.py
index 6a977f031662e..dc9c8fdde6295 100755
--- a/examples/json-schema-to-grammar.py
+++ b/examples/json-schema-to-grammar.py
@@ -90,18 +90,18 @@ def visit(self, schema, name):
             list_item_operator = f'("," space {item_rule_name})'
             successive_items = ""
             min_items = schema.get("minItems", 0)
-            if min_items > 0:
-               first_item = f"({item_rule_name})"
-               successive_items = list_item_operator * (min_items - 1)
-               min_items -= 1
-            else:
-               first_item = f"({item_rule_name})?"
             max_items = schema.get("maxItems")
+            if min_items > 0:
+                successive_items = list_item_operator * (min_items - 1)
+                min_items -= 1
             if max_items is not None and max_items > min_items:
                 successive_items += (list_item_operator + "?") * (max_items - min_items - 1)
             else:
                 successive_items += list_item_operator + "*"
-            rule = f'"[" space {first_item} {successive_items} "]" space'
+            if min_items == 0:
+                rule = f'"[" space ({item_rule_name} {successive_items})? "]" space'
+            else:
+                rule = f'"[" space {item_rule_name} {successive_items} "]" space'
             return self._add_rule(rule_name, rule)
 
         else:

From 2d9580a37bb56f4fa3de00035d2a0fde76f5f350 Mon Sep 17 00:00:00 2001
From: ochafik <ochafik@google.com>
Date: Fri, 1 Mar 2024 14:12:46 +0000
Subject: [PATCH 02/98] json: support tuple types (`[number, string]`)

---
 examples/json-schema-to-grammar.py | 43 ++++++++++++++++++------------
 1 file changed, 26 insertions(+), 17 deletions(-)

diff --git a/examples/json-schema-to-grammar.py b/examples/json-schema-to-grammar.py
index dc9c8fdde6295..4c2a3675d3001 100755
--- a/examples/json-schema-to-grammar.py
+++ b/examples/json-schema-to-grammar.py
@@ -86,24 +86,33 @@ def visit(self, schema, name):
 
         elif schema_type == 'array' and 'items' in schema:
             # TODO `prefixItems` keyword
-            item_rule_name = self.visit(schema['items'], f'{name}{"-" if name else ""}item')
-            list_item_operator = f'("," space {item_rule_name})'
-            successive_items = ""
-            min_items = schema.get("minItems", 0)
-            max_items = schema.get("maxItems")
-            if min_items > 0:
-                successive_items = list_item_operator * (min_items - 1)
-                min_items -= 1
-            if max_items is not None and max_items > min_items:
-                successive_items += (list_item_operator + "?") * (max_items - min_items - 1)
+            items = schema['items']
+            if isinstance(items, list):
+                return self._add_rule(
+                    rule_name,
+                    '"[" space ' +
+                    ' "," space '.join(
+                        self.visit(item, f'{name}-{i}')
+                        for i, item in enumerate(items)) +
+                    ' "]" space')
             else:
-                successive_items += list_item_operator + "*"
-            if min_items == 0:
-                rule = f'"[" space ({item_rule_name} {successive_items})? "]" space'
-            else:
-                rule = f'"[" space {item_rule_name} {successive_items} "]" space'
-            return self._add_rule(rule_name, rule)
-
+                item_rule_name = self.visit(items, f'{name}{"-" if name else ""}item')
+                list_item_operator = f'("," space {item_rule_name})'
+                successive_items = ""
+                min_items = schema.get("minItems", 0)
+                max_items = schema.get("maxItems")
+                if min_items > 0:
+                    successive_items = list_item_operator * (min_items - 1)
+                    min_items -= 1
+                if max_items is not None and max_items > min_items:
+                    successive_items += (list_item_operator + "?") * (max_items - min_items - 1)
+                else:
+                    successive_items += list_item_operator + "*"
+                if min_items == 0:
+                    rule = f'"[" space ({item_rule_name} {successive_items})? "]" space'
+                else:
+                    rule = f'"[" space {item_rule_name} {successive_items} "]" space'
+                return self._add_rule(rule_name, rule)
         else:
             assert schema_type in PRIMITIVE_RULES, f'Unrecognized schema: {schema}'
             return self._add_rule(

From 3c339ce34a00f2ee26128a12a583557605209df1 Mon Sep 17 00:00:00 2001
From: ochafik <ochafik@google.com>
Date: Fri, 1 Mar 2024 14:14:45 +0000
Subject: [PATCH 03/98] json: support additionalProperties (`{[k: string]:
 [string,number][]}`)

---
 examples/json-schema-to-grammar.py | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/examples/json-schema-to-grammar.py b/examples/json-schema-to-grammar.py
index 4c2a3675d3001..a70f14e03888c 100755
--- a/examples/json-schema-to-grammar.py
+++ b/examples/json-schema-to-grammar.py
@@ -84,6 +84,18 @@ def visit(self, schema, name):
 
             return self._add_rule(rule_name, rule)
 
+        elif schema_type == 'object' and 'additionalProperties' in schema:
+            additional_properties = schema['additionalProperties']
+            if not isinstance(additional_properties, dict):
+                additional_properties = {}
+
+            sub_name = f'{name}{"-" if name else ""}additionalProperties'
+            value_rule = self.visit(additional_properties, f'{sub_name}-value')
+            kv_rule = self._add_rule(f'{sub_name}-kv', f'string ":" space {value_rule}')
+            return self._add_rule(
+                rule_name,
+                f'( {kv_rule} ( "," space {kv_rule} )* )*')
+
         elif schema_type == 'array' and 'items' in schema:
             # TODO `prefixItems` keyword
             items = schema['items']

From 1daaf30bde16cd238267296f23863645fa73993d Mon Sep 17 00:00:00 2001
From: ochafik <ochafik@google.com>
Date: Fri, 1 Mar 2024 14:15:27 +0000
Subject: [PATCH 04/98] json: support required / optional properties

---
 examples/json-schema-to-grammar.py | 70 +++++++++++++++++++++++++-----
 1 file changed, 58 insertions(+), 12 deletions(-)

diff --git a/examples/json-schema-to-grammar.py b/examples/json-schema-to-grammar.py
index a70f14e03888c..7b718719c1713 100755
--- a/examples/json-schema-to-grammar.py
+++ b/examples/json-schema-to-grammar.py
@@ -68,19 +68,65 @@ def visit(self, schema, name):
         elif schema_type == 'object' and 'properties' in schema:
             # TODO: `required` keyword
             prop_order = self._prop_order
-            prop_pairs = sorted(
-                schema['properties'].items(),
-                # sort by position in prop_order (if specified) then by key
-                key=lambda kv: (prop_order.get(kv[0], len(prop_order)), kv[0]),
-            )
-
-            rule = '"{" space'
-            for i, (prop_name, prop_schema) in enumerate(prop_pairs):
+            required = set(schema.get('required', []))
+            properties = schema['properties']
+            # sort by position in prop_order (if specified) then by key
+            def prop_sort_key(k):
+                return (prop_order.get(k, len(prop_order)), k),
+
+            prop_kv_rule_names = {}
+            for prop_name, prop_schema in properties.items():
                 prop_rule_name = self.visit(prop_schema, f'{name}{"-" if name else ""}{prop_name}')
-                if i > 0:
-                    rule += ' "," space'
-                rule += fr' {self._format_literal(prop_name)} space ":" space {prop_rule_name}'
-            rule += ' "}" space'
+                prop_kv_rule_names[prop_name] = self._add_rule(
+                    f'{name}{"-" if name else ""}{prop_name}-kv',
+                    fr'{self._format_literal(prop_name)} space ":" space {prop_rule_name}'
+                )
+
+            req_props = list(sorted(
+                (k for k in properties.keys() if k in required),
+                key=prop_sort_key,
+            ))
+            opt_props = list(sorted(
+                (k for k in properties.keys() if k not in required),
+                key=prop_sort_key,
+            ))
+
+            def format_kv(prop_name, prop_rule_name):
+                return fr'{self._format_literal(prop_name)} space ":" space {prop_rule_name}'
+            
+            rule = '"{" space '
+            rule += ' "," space '.join(
+                prop_kv_rule_names[prop_name]
+                for prop_name in req_props
+            )            
+            if opt_props:
+                rule += ' ('
+                if req_props:
+                    rule += ' "," space ( '
+
+                def get_recursive_refs(ks, first_is_optional):
+                    [prop_name, *rest] = ks
+                    kv_rule_name = prop_kv_rule_names[prop_name]
+                    if first_is_optional:
+                        res = f'( "," space {kv_rule_name} )?'
+                    else:
+                        res = kv_rule_name
+                    if len(rest) > 0:
+                        res += ' ' + self._add_rule(
+                            f'{name}{"-" if name else ""}{prop_name}-rest',
+                            get_recursive_refs(rest, first_is_optional=True)
+                        )
+                    return res
+
+                rule += ' | '.join(
+                    get_recursive_refs(opt_props[i:], first_is_optional=False)
+                    for i in range(len(opt_props))
+                )
+                if req_props:
+                    rule += ')'
+                rule += ')?'
+
+            rule += '"}" space'
 
             return self._add_rule(rule_name, rule)
 

From 1428a85ff202f62f33942552eab2191c0b9dc5ef Mon Sep 17 00:00:00 2001
From: ochafik <ochafik@google.com>
Date: Fri, 1 Mar 2024 19:00:47 +0000
Subject: [PATCH 05/98] json: add support for pattern

---
 examples/json-schema-to-grammar.py | 52 ++++++++++++++++++++++++++++++
 1 file changed, 52 insertions(+)

diff --git a/examples/json-schema-to-grammar.py b/examples/json-schema-to-grammar.py
index 7b718719c1713..f57d94c750d7e 100755
--- a/examples/json-schema-to-grammar.py
+++ b/examples/json-schema-to-grammar.py
@@ -47,6 +47,55 @@ def _add_rule(self, name, rule):
         self._rules[key] = rule
         return key
 
+    def _visit_pattern(self, pattern):
+        assert pattern.startswith('^') and pattern.endswith('$'), 'Pattern must start with "^" and end with "$"'
+        pattern = pattern[1:-1]
+        try:
+            def visit(pattern):
+                if pattern[0] == re._parser.LITERAL:
+                    return json.dumps(chr(pattern[1]))
+                elif pattern[0] == re._parser.ANY:
+                    raise ValueError('Unsupported pattern: "."')
+                elif pattern[0] == re._parser.IN:
+                    def format_range_char(c):
+                        if chr(c) in ('-', ']', '\\', '\n', '\r', '\t'):
+                            return '\\' + chr(c)
+                        else:
+                            return chr(c)
+                    def format_range_comp(c):
+                        if c[0] == re._parser.LITERAL:
+                            return format_range_char(c[1])
+                        elif c[0] == re._parser.RANGE:
+                            return f'{format_range_char(c[1][0])}-{format_range_char(c[1][1])}'
+                        else:
+                            raise ValueError(f'Unrecognized pattern: {c}')
+                    return f'[{"".join(format_range_comp(c) for c in pattern[1])}]'
+                elif pattern[0] == re._parser.BRANCH:
+                    return ' | '.join((visit(p) for p in pattern[1][1]))
+                elif pattern[0] == re._parser.SUBPATTERN:
+                    return visit(pattern[1][3])
+                elif pattern[0] == re._parser.MAX_REPEAT:
+                    min_times = pattern[1][0]
+                    max_times = pattern[1][1] if not pattern[1][1] == re._parser.MAXREPEAT else None
+                    sub_pattern = pattern[1][2]
+                    if min_times == 0 and max_times is None:
+                        return f'{visit(sub_pattern)}*'
+                    elif min_times == 0 and max_times == 1:
+                        return f'{visit(sub_pattern)}?'
+                    elif min_times == 1 and max_times is None:
+                        return f'{visit(sub_pattern)}+'
+                    else:
+                        raise ValueError(f'Unrecognized pattern: {pattern} ({type(pattern)}; min: {min_times}, max: {max_times})')
+                elif isinstance(pattern, re._parser.SubPattern):
+                    return ' '.join(visit(p) for p in pattern.data)
+                elif isinstance(pattern, list):# and (len(pattern) == 0 or isinstance(pattern[0], (tuple, list))):
+                    return ' '.join(visit(p) for p in pattern)
+                else:
+                    raise ValueError(f'Unrecognized pattern: {pattern} ({type(pattern)})')
+            return visit(re._parser.parse(pattern))
+        except BaseException as e:
+            raise Exception(f'Error processing pattern: {pattern}: {e}') from e
+
     def visit(self, schema, name):
         schema_type = schema.get('type')
         rule_name = name or 'root'
@@ -171,6 +220,9 @@ def get_recursive_refs(ks, first_is_optional):
                 else:
                     rule = f'"[" space {item_rule_name} {successive_items} "]" space'
                 return self._add_rule(rule_name, rule)
+            
+        elif schema_type in (None, 'string') and 'pattern' in schema:
+            return self._add_rule(rule_name, self._visit_pattern(schema['pattern']))
         else:
             assert schema_type in PRIMITIVE_RULES, f'Unrecognized schema: {schema}'
             return self._add_rule(

From 12f0d7e84b32c7bfd78bfc78d0c7d4b0993274f6 Mon Sep 17 00:00:00 2001
From: ochafik <ochafik@google.com>
Date: Fri, 1 Mar 2024 19:03:23 +0000
Subject: [PATCH 06/98] json: resolve $ref (and support https schema urls)

---
 examples/json-schema-to-grammar.py | 34 +++++++++++++++++++++++++++++-
 1 file changed, 33 insertions(+), 1 deletion(-)

diff --git a/examples/json-schema-to-grammar.py b/examples/json-schema-to-grammar.py
index f57d94c750d7e..4436ef1d00de8 100755
--- a/examples/json-schema-to-grammar.py
+++ b/examples/json-schema-to-grammar.py
@@ -47,6 +47,20 @@ def _add_rule(self, name, rule):
         self._rules[key] = rule
         return key
 
+    def _resolve_ref(self, ref):
+        # TODO: use https://github.com/APIDevTools/json-schema-ref-parser
+        try:
+            if ref is not None and ref.startswith('#/'):# and 'definitions' in schema:
+                target = self.ref_base
+                name = None
+                for sel in ref.split('/')[1:]:
+                    name = sel
+                    target = target[sel]
+                return (name, target)
+            return None
+        except KeyError as e:
+            raise Exception(f'Error resolving ref {ref}: {e}') from e
+    
     def _visit_pattern(self, pattern):
         assert pattern.startswith('^') and pattern.endswith('$'), 'Pattern must start with "^" and end with "$"'
         pattern = pattern[1:-1]
@@ -223,6 +237,17 @@ def get_recursive_refs(ks, first_is_optional):
             
         elif schema_type in (None, 'string') and 'pattern' in schema:
             return self._add_rule(rule_name, self._visit_pattern(schema['pattern']))
+
+        elif (resolved := self._resolve_ref(ref)) is not None:
+            (ref_name, definition) = resolved
+            def_name = f'{name}-{ref_name}' if name else ''
+            return self.visit(definition, def_name)
+        
+        elif ref is not None and ref.startswith('https://'):
+            import requests
+            ref_schema = requests.get(ref).json()
+            return self.visit(ref_schema, ref)
+
         else:
             assert schema_type in PRIMITIVE_RULES, f'Unrecognized schema: {schema}'
             return self._add_rule(
@@ -255,7 +280,14 @@ def main(args_in = None):
     parser.add_argument('schema', help='file containing JSON schema ("-" for stdin)')
     args = parser.parse_args(args_in)
 
-    schema = json.load(sys.stdin if args.schema == '-' else open(args.schema))
+    if args.schema.startswith('https://'):
+        import requests
+        schema = requests.get(args.schema).json()
+    elif args.schema == '-':
+        schema = json.load(sys.stdin)
+    else:
+        with open(args.schema) as f:
+            schema = json.load(f)
     prop_order = {name: idx for idx, name in enumerate(args.prop_order)}
     converter = SchemaConverter(prop_order)
     converter.visit(schema, '')

From ea4244e1f7270abc341a67a3d2eb37ba2cc9c8f9 Mon Sep 17 00:00:00 2001
From: ochafik <ochafik@google.com>
Date: Fri, 1 Mar 2024 19:04:04 +0000
Subject: [PATCH 07/98] json: fix $ref resolution

---
 examples/json-schema-to-grammar.py | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/examples/json-schema-to-grammar.py b/examples/json-schema-to-grammar.py
index 4436ef1d00de8..7003e389b22df 100755
--- a/examples/json-schema-to-grammar.py
+++ b/examples/json-schema-to-grammar.py
@@ -28,6 +28,7 @@ class SchemaConverter:
     def __init__(self, prop_order):
         self._prop_order = prop_order
         self._rules = {'space': SPACE_RULE}
+        self.ref_base = None
 
     def _format_literal(self, literal):
         escaped = GRAMMAR_LITERAL_ESCAPE_RE.sub(
@@ -111,7 +112,17 @@ def format_range_comp(c):
             raise Exception(f'Error processing pattern: {pattern}: {e}') from e
 
     def visit(self, schema, name):
+        old_ref_base = self.ref_base
+        if 'definitions' in schema:
+            self.ref_base = schema
+        try:
+            return self._visit(schema, name)
+        finally:
+            self.ref_base = old_ref_base
+    
+    def _visit(self, schema, name):
         schema_type = schema.get('type')
+        ref = schema.get('$ref')
         rule_name = name or 'root'
 
         if 'oneOf' in schema or 'anyOf' in schema:

From 82ade9f558ac8a88ddbeeda5d92c143da76e5d2f Mon Sep 17 00:00:00 2001
From: ochafik <ochafik@google.com>
Date: Fri, 1 Mar 2024 19:04:42 +0000
Subject: [PATCH 08/98] join: support union types (mostly for nullable types I
 think)

---
 examples/json-schema-to-grammar.py | 15 ++++++++++-----
 1 file changed, 10 insertions(+), 5 deletions(-)

diff --git a/examples/json-schema-to-grammar.py b/examples/json-schema-to-grammar.py
index 7003e389b22df..1be8305fea017 100755
--- a/examples/json-schema-to-grammar.py
+++ b/examples/json-schema-to-grammar.py
@@ -62,6 +62,12 @@ def _resolve_ref(self, ref):
         except KeyError as e:
             raise Exception(f'Error resolving ref {ref}: {e}') from e
     
+    def _generate_union_rule(self, name, alt_schemas):
+        return ' | '.join((
+            self.visit(alt_schema, f'{name}{"-" if name else ""}{i}')
+            for i, alt_schema in enumerate(alt_schemas)
+        ))
+
     def _visit_pattern(self, pattern):
         assert pattern.startswith('^') and pattern.endswith('$'), 'Pattern must start with "^" and end with "$"'
         pattern = pattern[1:-1]
@@ -126,11 +132,10 @@ def _visit(self, schema, name):
         rule_name = name or 'root'
 
         if 'oneOf' in schema or 'anyOf' in schema:
-            rule = ' | '.join((
-                self.visit(alt_schema, f'{name}{"-" if name else ""}{i}')
-                for i, alt_schema in enumerate(schema.get('oneOf') or schema['anyOf'])
-            ))
-            return self._add_rule(rule_name, rule)
+            return self._add_rule(rule_name, self._generate_union_rule(name, schema.get('oneOf') or schema['anyOf']))
+        
+        elif isinstance(schema_type, list):
+            return self._add_rule(rule_name, self._generate_union_rule(name, [{'type': t} for t in schema_type]))
 
         elif 'const' in schema:
             return self._add_rule(rule_name, self._format_literal(schema['const']))

From f6f851ba876e7b7ba29ec0866bc6fa40300fa775 Mon Sep 17 00:00:00 2001
From: ochafik <ochafik@google.com>
Date: Fri, 1 Mar 2024 19:05:38 +0000
Subject: [PATCH 09/98] json: support allOf + nested anyOf

---
 examples/json-schema-to-grammar.py | 136 ++++++++++++++++-------------
 1 file changed, 76 insertions(+), 60 deletions(-)

diff --git a/examples/json-schema-to-grammar.py b/examples/json-schema-to-grammar.py
index 1be8305fea017..d73b731074b06 100755
--- a/examples/json-schema-to-grammar.py
+++ b/examples/json-schema-to-grammar.py
@@ -144,70 +144,34 @@ def _visit(self, schema, name):
             rule = ' | '.join((self._format_literal(v) for v in schema['enum']))
             return self._add_rule(rule_name, rule)
 
-        elif schema_type == 'object' and 'properties' in schema:
-            # TODO: `required` keyword
-            prop_order = self._prop_order
+        elif schema_type in (None, 'object') and 'properties' in schema:
             required = set(schema.get('required', []))
             properties = schema['properties']
-            # sort by position in prop_order (if specified) then by key
-            def prop_sort_key(k):
-                return (prop_order.get(k, len(prop_order)), k),
-
-            prop_kv_rule_names = {}
-            for prop_name, prop_schema in properties.items():
-                prop_rule_name = self.visit(prop_schema, f'{name}{"-" if name else ""}{prop_name}')
-                prop_kv_rule_names[prop_name] = self._add_rule(
-                    f'{name}{"-" if name else ""}{prop_name}-kv',
-                    fr'{self._format_literal(prop_name)} space ":" space {prop_rule_name}'
-                )
-
-            req_props = list(sorted(
-                (k for k in properties.keys() if k in required),
-                key=prop_sort_key,
-            ))
-            opt_props = list(sorted(
-                (k for k in properties.keys() if k not in required),
-                key=prop_sort_key,
-            ))
-
-            def format_kv(prop_name, prop_rule_name):
-                return fr'{self._format_literal(prop_name)} space ":" space {prop_rule_name}'
-            
-            rule = '"{" space '
-            rule += ' "," space '.join(
-                prop_kv_rule_names[prop_name]
-                for prop_name in req_props
-            )            
-            if opt_props:
-                rule += ' ('
-                if req_props:
-                    rule += ' "," space ( '
-
-                def get_recursive_refs(ks, first_is_optional):
-                    [prop_name, *rest] = ks
-                    kv_rule_name = prop_kv_rule_names[prop_name]
-                    if first_is_optional:
-                        res = f'( "," space {kv_rule_name} )?'
-                    else:
-                        res = kv_rule_name
-                    if len(rest) > 0:
-                        res += ' ' + self._add_rule(
-                            f'{name}{"-" if name else ""}{prop_name}-rest',
-                            get_recursive_refs(rest, first_is_optional=True)
-                        )
-                    return res
-
-                rule += ' | '.join(
-                    get_recursive_refs(opt_props[i:], first_is_optional=False)
-                    for i in range(len(opt_props))
-                )
-                if req_props:
-                    rule += ')'
-                rule += ')?'
-
-            rule += '"}" space'
+            return self._add_rule(rule_name, self._build_object_rule(properties.items(), required, name))
+
+        elif schema_type == 'object' and 'allOf' in schema:
+            required = set()
+            properties = []
+            def add_component(comp_schema, is_required):
+                ref = comp_schema.get('$ref')
+                if ref is not None and (resolved := self._resolve_ref(ref)) is not None:
+                    comp_schema = resolved[1]
+
+                if 'properties' in comp_schema:
+                    for prop_name, prop_schema in comp_schema['properties'].items():
+                        properties.append((prop_name, prop_schema))
+                        if is_required:
+                            required.add(prop_name)
+
+            for t in schema['allOf']:
+                if 'anyOf' in t:
+                    for tt in t['anyOf']:
+                        add_component(tt, is_required=False)
+                else:
+                    add_component(t, is_required=True)
 
             return self._add_rule(rule_name, rule)
+            return self._add_rule(rule_name, self._build_object_rule(properties, required, name))
 
         elif schema_type == 'object' and 'additionalProperties' in schema:
             additional_properties = schema['additionalProperties']
@@ -270,6 +234,58 @@ def get_recursive_refs(ks, first_is_optional):
                 'root' if rule_name == 'root' else schema_type,
                 PRIMITIVE_RULES[schema_type]
             )
+    
+    def _build_object_rule(self, properties: List[Tuple[str, Any]], required: Set[str], name: str):
+        # TODO: `required` keyword
+        prop_order = self._prop_order
+        print(f'# properties: {properties}', file=sys.stderr)
+        # sort by position in prop_order (if specified) then by original order
+        sorted_props = [kv[0] for _, kv in sorted(enumerate(properties), key=lambda ikv: (prop_order.get(ikv[1][0], len(prop_order)), ikv[0]))]
+
+        prop_kv_rule_names = {}
+        for prop_name, prop_schema in properties:
+            prop_rule_name = self.visit(prop_schema, f'{name}{"-" if name else ""}{prop_name}')
+            prop_kv_rule_names[prop_name] = self._add_rule(
+                f'{name}{"-" if name else ""}{prop_name}-kv',
+                fr'{self._format_literal(prop_name)} space ":" space {prop_rule_name}'
+            )
+
+        required_props = [k for k in sorted_props if k in required]
+        optional_props = [k for k in sorted_props if k not in required]
+        
+        rule = '"{" space '
+        rule += ' "," space '.join(prop_kv_rule_names[k] for k in required_props)            
+
+        if optional_props:
+            rule += ' ('
+            if required_props:
+                rule += ' "," space ( '
+
+            def get_recursive_refs(ks, first_is_optional):
+                [k, *rest] = ks
+                kv_rule_name = prop_kv_rule_names[k]
+                if first_is_optional:
+                    res = f'( "," space {kv_rule_name} )?'
+                else:
+                    res = kv_rule_name
+                if len(rest) > 0:
+                    res += ' ' + self._add_rule(
+                        f'{name}{"-" if name else ""}{k}-rest',
+                        get_recursive_refs(rest, first_is_optional=True)
+                    )
+                return res
+
+            rule += ' | '.join(
+                get_recursive_refs(optional_props[i:], first_is_optional=False)
+                for i in range(len(optional_props))
+            ) + ' '
+            if required_props:
+                rule += ' ) '
+            rule += ' )? '
+
+        rule += ' "}" space '
+
+        return rule
 
     def format_grammar(self):
         return '\n'.join((f'{name} ::= {rule}' for name, rule in self._rules.items()))

From bc0e0d9f5551bdb04bdfe61b48b03188fbfbc4c7 Mon Sep 17 00:00:00 2001
From: ochafik <ochafik@google.com>
Date: Fri, 1 Mar 2024 19:06:19 +0000
Subject: [PATCH 10/98] json: support any (`{}` or `{type: object}`)

---
 examples/json-schema-to-grammar.py | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/examples/json-schema-to-grammar.py b/examples/json-schema-to-grammar.py
index d73b731074b06..f3ed0eb5f03bc 100755
--- a/examples/json-schema-to-grammar.py
+++ b/examples/json-schema-to-grammar.py
@@ -12,6 +12,9 @@
     'boolean': '("true" | "false") space',
     'number': '("-"? ([0-9] | [1-9] [0-9]*)) ("." [0-9]+)? ([eE] [-+]? [0-9]+)? space',
     'integer': '("-"? ([0-9] | [1-9] [0-9]*)) space',
+    'value'  : 'object | array | string | number | boolean',
+    'object' : '"{" space ( string ":" space value ("," space string ":" space value)* )? "}" space',
+    'array'  : '"[" space ( value ("," space value)* )? "]" space',
     'string': r''' "\"" (
         [^"\\] |
         "\\" (["\\/bfnrt] | "u" [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F])
@@ -228,6 +231,12 @@ def add_component(comp_schema, is_required):
             ref_schema = requests.get(ref).json()
             return self.visit(ref_schema, ref)
 
+        elif schema_type == 'object' and len(schema) == 1 or schema_type is None and len(schema) == 0:
+            # return 'object'
+            for t, r in PRIMITIVE_RULES.items():
+                self._add_rule(t, r)
+            return 'object'
+        
         else:
             assert schema_type in PRIMITIVE_RULES, f'Unrecognized schema: {schema}'
             return self._add_rule(

From 148555cebcdd0954f785fcd566b89b4a70bb2ac2 Mon Sep 17 00:00:00 2001
From: ochafik <ochafik@google.com>
Date: Fri, 1 Mar 2024 19:08:44 +0000
Subject: [PATCH 11/98] json: fix merge

---
 examples/json-schema-to-grammar.py | 1 -
 1 file changed, 1 deletion(-)

diff --git a/examples/json-schema-to-grammar.py b/examples/json-schema-to-grammar.py
index f3ed0eb5f03bc..32198b027dba8 100755
--- a/examples/json-schema-to-grammar.py
+++ b/examples/json-schema-to-grammar.py
@@ -173,7 +173,6 @@ def add_component(comp_schema, is_required):
                 else:
                     add_component(t, is_required=True)
 
-            return self._add_rule(rule_name, rule)
             return self._add_rule(rule_name, self._build_object_rule(properties, required, name))
 
         elif schema_type == 'object' and 'additionalProperties' in schema:

From ed24688af84faf216fc03c02e485492f5d1c047d Mon Sep 17 00:00:00 2001
From: ochafik <ochafik@google.com>
Date: Fri, 1 Mar 2024 19:08:59 +0000
Subject: [PATCH 12/98] json: temp fix for escapes

---
 examples/json-schema-to-grammar.py | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/examples/json-schema-to-grammar.py b/examples/json-schema-to-grammar.py
index 32198b027dba8..b2e25d390965d 100755
--- a/examples/json-schema-to-grammar.py
+++ b/examples/json-schema-to-grammar.py
@@ -34,10 +34,11 @@ def __init__(self, prop_order):
         self.ref_base = None
 
     def _format_literal(self, literal):
-        escaped = GRAMMAR_LITERAL_ESCAPE_RE.sub(
-            lambda m: GRAMMAR_LITERAL_ESCAPES.get(m.group(0)), json.dumps(literal)
-        )
-        return f'"{escaped}"'
+        return json.dumps(literal)
+        # escaped = GRAMMAR_LITERAL_ESCAPE_RE.sub(
+        #     lambda m: GRAMMAR_LITERAL_ESCAPES.get(m.group(0)), json.dumps(literal)
+        # )
+        # return f'"{escaped}"'
 
     def _add_rule(self, name, rule):
         esc_name = INVALID_RULE_CHARS_RE.sub('-', name)

From c5bc1540d84556ffdff67b83fb42a88814da465c Mon Sep 17 00:00:00 2001
From: ochafik <ochafik@google.com>
Date: Fri, 1 Mar 2024 19:10:04 +0000
Subject: [PATCH 13/98] json: spaces in output and unrestricted output spaces

---
 examples/json-schema-to-grammar.py | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/examples/json-schema-to-grammar.py b/examples/json-schema-to-grammar.py
index b2e25d390965d..d74ab07108b95 100755
--- a/examples/json-schema-to-grammar.py
+++ b/examples/json-schema-to-grammar.py
@@ -6,7 +6,7 @@
 
 # whitespace is constrained to a single space char to prevent model "running away" in
 # whitespace. Also maybe improves generation quality?
-SPACE_RULE = '" "?'
+SPACE_RULE = '" "*'
 
 PRIMITIVE_RULES = {
     'boolean': '("true" | "false") space',
@@ -201,7 +201,7 @@ def add_component(comp_schema, is_required):
                     ' "]" space')
             else:
                 item_rule_name = self.visit(items, f'{name}{"-" if name else ""}item')
-                list_item_operator = f'("," space {item_rule_name})'
+                list_item_operator = f'( "," space {item_rule_name} )'
                 successive_items = ""
                 min_items = schema.get("minItems", 0)
                 max_items = schema.get("maxItems")
@@ -213,7 +213,7 @@ def add_component(comp_schema, is_required):
                 else:
                     successive_items += list_item_operator + "*"
                 if min_items == 0:
-                    rule = f'"[" space ({item_rule_name} {successive_items})? "]" space'
+                    rule = f'"[" space ( {item_rule_name} {successive_items} )? "]" space'
                 else:
                     rule = f'"[" space {item_rule_name} {successive_items} "]" space'
                 return self._add_rule(rule_name, rule)

From 5827ff401b9e52da6aaabb31e2d3417b80e1db55 Mon Sep 17 00:00:00 2001
From: ochafik <ochafik@google.com>
Date: Fri, 1 Mar 2024 19:10:29 +0000
Subject: [PATCH 14/98] json: add typings

---
 examples/json-schema-to-grammar.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/examples/json-schema-to-grammar.py b/examples/json-schema-to-grammar.py
index d74ab07108b95..6fa46971abb39 100755
--- a/examples/json-schema-to-grammar.py
+++ b/examples/json-schema-to-grammar.py
@@ -3,6 +3,7 @@
 import json
 import re
 import sys
+from typing import Any, Dict, List, Set, Tuple
 
 # whitespace is constrained to a single space char to prevent model "running away" in
 # whitespace. Also maybe improves generation quality?

From 06b04e93c53641575068d4a3e3fa8afe121325bc Mon Sep 17 00:00:00 2001
From: ochafik <ochafik@google.com>
Date: Sun, 3 Mar 2024 21:42:43 +0000
Subject: [PATCH 15/98] json:fix typo

---
 examples/json-schema-to-grammar.py | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/examples/json-schema-to-grammar.py b/examples/json-schema-to-grammar.py
index 6fa46971abb39..4578566410ee8 100755
--- a/examples/json-schema-to-grammar.py
+++ b/examples/json-schema-to-grammar.py
@@ -35,11 +35,10 @@ def __init__(self, prop_order):
         self.ref_base = None
 
     def _format_literal(self, literal):
-        return json.dumps(literal)
-        # escaped = GRAMMAR_LITERAL_ESCAPE_RE.sub(
-        #     lambda m: GRAMMAR_LITERAL_ESCAPES.get(m.group(0)), json.dumps(literal)
-        # )
-        # return f'"{escaped}"'
+        escaped = GRAMMAR_LITERAL_ESCAPE_RE.sub(
+            lambda m: GRAMMAR_LITERAL_ESCAPES.get(m.group(0)), json.dumps(literal)
+        )
+        return f'"{escaped}"'
 
     def _add_rule(self, name, rule):
         esc_name = INVALID_RULE_CHARS_RE.sub('-', name)

From 21ac451d8e8c4c1f8d821999141f1a488904138a Mon Sep 17 00:00:00 2001
From: ochafik <ochafik@google.com>
Date: Sun, 3 Mar 2024 22:22:21 +0000
Subject: [PATCH 16/98] Create ts-type-to-grammar.sh

---
 examples/ts-type-to-grammar.sh | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)
 create mode 100755 examples/ts-type-to-grammar.sh

diff --git a/examples/ts-type-to-grammar.sh b/examples/ts-type-to-grammar.sh
new file mode 100755
index 0000000000000..33c1eec2ce903
--- /dev/null
+++ b/examples/ts-type-to-grammar.sh
@@ -0,0 +1,26 @@
+#!/bin/bash
+#
+# ./examples/ts-type-to-grammar.sh "{a:string,b:string,c?:string}"
+# python examples/json-schema-to-grammar.py https://raw.githubusercontent.com/SchemaStore/schemastore/master/src/schemas/json/tsconfig.json
+#
+set -euo pipefail
+
+readonly type="$1"
+
+# Create a temporary directory
+TMPDIR=""
+trap 'rm -fR "$TMPDIR"' EXIT
+TMPDIR=$(mktemp -d)
+
+DTS_FILE="$TMPDIR/type.d.ts"
+SCHEMA_FILE="$TMPDIR/schema.json"
+
+echo "export type MyType = $type" > "$DTS_FILE"
+
+# https://github.com/YousefED/typescript-json-schema
+# npx typescript-json-schema --defaultProps --required "$DTS_FILE" MyType | tee "$SCHEMA_FILE" >&2
+
+# https://github.com/vega/ts-json-schema-generator
+npx ts-json-schema-generator --path "$DTS_FILE" --type MyType -e none | tee "$SCHEMA_FILE" >&2
+
+./examples/json-schema-to-grammar.py "$SCHEMA_FILE"
\ No newline at end of file

From a78eb4a0c328c9ea5cce5ada7d4d7f424c330217 Mon Sep 17 00:00:00 2001
From: ochafik <ochafik@google.com>
Date: Tue, 5 Mar 2024 03:25:43 +0000
Subject: [PATCH 17/98] json: fix _format_literal (json.dumps already escapes
 quotes)

---
 examples/json-schema-to-grammar.py | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/examples/json-schema-to-grammar.py b/examples/json-schema-to-grammar.py
index 4578566410ee8..31f8cd6ab0f2d 100755
--- a/examples/json-schema-to-grammar.py
+++ b/examples/json-schema-to-grammar.py
@@ -24,8 +24,8 @@
 }
 
 INVALID_RULE_CHARS_RE = re.compile(r'[^a-zA-Z0-9-]+')
-GRAMMAR_LITERAL_ESCAPE_RE = re.compile(r'[\r\n"]')
-GRAMMAR_LITERAL_ESCAPES = {'\r': '\\r', '\n': '\\n', '"': '\\"'}
+GRAMMAR_LITERAL_ESCAPE_RE = re.compile(r'[\r\n]')
+GRAMMAR_LITERAL_ESCAPES = {'\r': '\\r', '\n': '\\n'}
 
 
 class SchemaConverter:
@@ -36,7 +36,7 @@ def __init__(self, prop_order):
 
     def _format_literal(self, literal):
         escaped = GRAMMAR_LITERAL_ESCAPE_RE.sub(
-            lambda m: GRAMMAR_LITERAL_ESCAPES.get(m.group(0)), json.dumps(literal)
+            lambda m: GRAMMAR_LITERAL_ESCAPES.get(m.group(0)), json.dumps(literal)[1:-1]
         )
         return f'"{escaped}"'
 

From d5ef412f31fdaf4fd4ee3dfe3326329b4da02037 Mon Sep 17 00:00:00 2001
From: ochafik <ochafik@google.com>
Date: Tue, 5 Mar 2024 03:26:35 +0000
Subject: [PATCH 18/98] json: merge lit sequences and handle negatives

{"type": "string", "pattern": "^({\"question\": \"[^\"]+\", \"response\": \"[^\"]+\"}\\n)+$"}
---
 examples/json-schema-to-grammar.py | 23 ++++++++++++++++++++---
 1 file changed, 20 insertions(+), 3 deletions(-)

diff --git a/examples/json-schema-to-grammar.py b/examples/json-schema-to-grammar.py
index 31f8cd6ab0f2d..91d7e868da012 100755
--- a/examples/json-schema-to-grammar.py
+++ b/examples/json-schema-to-grammar.py
@@ -1,5 +1,6 @@
 #!/usr/bin/env python3
 import argparse
+import itertools
 import json
 import re
 import sys
@@ -76,9 +77,25 @@ def _visit_pattern(self, pattern):
         assert pattern.startswith('^') and pattern.endswith('$'), 'Pattern must start with "^" and end with "$"'
         pattern = pattern[1:-1]
         try:
+            def visit_seq(seq):
+                out = []
+                for t, g in itertools.groupby(seq, lambda x: x[0]):
+                    g = list(g)
+                    if t == re._parser.LITERAL and len(g) > 1:
+                        out.append(self._format_literal(''.join(chr(x[1]) for x in g)))
+                    else:
+                        out.extend(visit(x) for x in g)
+                if len(out) == 1:
+                    return out[0]
+                return '(' + ' '.join(out) + ')'
+            
             def visit(pattern):
                 if pattern[0] == re._parser.LITERAL:
                     return json.dumps(chr(pattern[1]))
+                elif pattern[0] == re._parser.NOT_LITERAL:
+                    ch = chr(pattern[1])
+                    esc_ch = '\\' + ch if ch in ('-', ']', '\\') else ch
+                    return f'[^{esc_ch}]'
                 elif pattern[0] == re._parser.ANY:
                     raise ValueError('Unsupported pattern: "."')
                 elif pattern[0] == re._parser.IN:
@@ -112,9 +129,9 @@ def format_range_comp(c):
                     else:
                         raise ValueError(f'Unrecognized pattern: {pattern} ({type(pattern)}; min: {min_times}, max: {max_times})')
                 elif isinstance(pattern, re._parser.SubPattern):
-                    return ' '.join(visit(p) for p in pattern.data)
-                elif isinstance(pattern, list):# and (len(pattern) == 0 or isinstance(pattern[0], (tuple, list))):
-                    return ' '.join(visit(p) for p in pattern)
+                    return visit_seq(pattern.data)
+                elif isinstance(pattern, list):
+                    return visit_seq(pattern)
                 else:
                     raise ValueError(f'Unrecognized pattern: {pattern} ({type(pattern)})')
             return visit(re._parser.parse(pattern))

From 4e7c26c32cac3f5891e13c76a42e2deabdd51e4d Mon Sep 17 00:00:00 2001
From: ochafik <ochafik@google.com>
Date: Tue, 5 Mar 2024 03:40:23 +0000
Subject: [PATCH 19/98] json: handle pattern repetitions

---
 examples/json-schema-to-grammar.py | 53 ++++++++++++++++++++----------
 1 file changed, 36 insertions(+), 17 deletions(-)

diff --git a/examples/json-schema-to-grammar.py b/examples/json-schema-to-grammar.py
index 91d7e868da012..9118e84c806ae 100755
--- a/examples/json-schema-to-grammar.py
+++ b/examples/json-schema-to-grammar.py
@@ -73,6 +73,19 @@ def _generate_union_rule(self, name, alt_schemas):
             for i, alt_schema in enumerate(alt_schemas)
         ))
 
+
+    def _format_range_char(self, c):
+        if c in ('-', ']', '\\'):
+            return '\\' + chr(c)
+        elif c == '\n':
+            return '\\n'
+        elif c == '\r':
+            return '\\r'
+        elif c == '\t':
+            return '\\t'
+        else:
+            return c
+
     def _visit_pattern(self, pattern):
         assert pattern.startswith('^') and pattern.endswith('$'), 'Pattern must start with "^" and end with "$"'
         pattern = pattern[1:-1]
@@ -81,6 +94,7 @@ def visit_seq(seq):
                 out = []
                 for t, g in itertools.groupby(seq, lambda x: x[0]):
                     g = list(g)
+                    # Merge consecutive literals
                     if t == re._parser.LITERAL and len(g) > 1:
                         out.append(self._format_literal(''.join(chr(x[1]) for x in g)))
                     else:
@@ -92,48 +106,53 @@ def visit_seq(seq):
             def visit(pattern):
                 if pattern[0] == re._parser.LITERAL:
                     return json.dumps(chr(pattern[1]))
+                
                 elif pattern[0] == re._parser.NOT_LITERAL:
-                    ch = chr(pattern[1])
-                    esc_ch = '\\' + ch if ch in ('-', ']', '\\') else ch
-                    return f'[^{esc_ch}]'
+                    return f'[^{self._format_range_char(chr(pattern[1]))}]'
+                
                 elif pattern[0] == re._parser.ANY:
                     raise ValueError('Unsupported pattern: "."')
+                
                 elif pattern[0] == re._parser.IN:
-                    def format_range_char(c):
-                        if chr(c) in ('-', ']', '\\', '\n', '\r', '\t'):
-                            return '\\' + chr(c)
-                        else:
-                            return chr(c)
                     def format_range_comp(c):
                         if c[0] == re._parser.LITERAL:
-                            return format_range_char(c[1])
+                            return self._format_range_char(chr(c[1]))
                         elif c[0] == re._parser.RANGE:
-                            return f'{format_range_char(c[1][0])}-{format_range_char(c[1][1])}'
+                            return f'{self._format_range_char(chr(c[1][0]))}-{self._format_range_char(chr(c[1][1]))}'
                         else:
                             raise ValueError(f'Unrecognized pattern: {c}')
                     return f'[{"".join(format_range_comp(c) for c in pattern[1])}]'
+                
                 elif pattern[0] == re._parser.BRANCH:
-                    return ' | '.join((visit(p) for p in pattern[1][1]))
+                    return '(' + ' | '.join((visit(p) for p in pattern[1][1])) + ')'
+                
                 elif pattern[0] == re._parser.SUBPATTERN:
-                    return visit(pattern[1][3])
+                    return '(' + visit(pattern[1][3]) + ')'
+                
                 elif pattern[0] == re._parser.MAX_REPEAT:
                     min_times = pattern[1][0]
                     max_times = pattern[1][1] if not pattern[1][1] == re._parser.MAXREPEAT else None
-                    sub_pattern = pattern[1][2]
+                    sub = visit(pattern[1][2])
+
                     if min_times == 0 and max_times is None:
-                        return f'{visit(sub_pattern)}*'
+                        return f'{sub}*'
                     elif min_times == 0 and max_times == 1:
-                        return f'{visit(sub_pattern)}?'
+                        return f'{sub}?'
                     elif min_times == 1 and max_times is None:
-                        return f'{visit(sub_pattern)}+'
+                        return f'{sub}+'
                     else:
-                        raise ValueError(f'Unrecognized pattern: {pattern} ({type(pattern)}; min: {min_times}, max: {max_times})')
+                        return ' '.join([sub] * min_times + 
+                                        ([f'{sub}?'] * (max_times - min_times) if max_times is not None else [f'{sub}*']))
+                
                 elif isinstance(pattern, re._parser.SubPattern):
                     return visit_seq(pattern.data)
+                
                 elif isinstance(pattern, list):
                     return visit_seq(pattern)
+                
                 else:
                     raise ValueError(f'Unrecognized pattern: {pattern} ({type(pattern)})')
+
             return visit(re._parser.parse(pattern))
         except BaseException as e:
             raise Exception(f'Error processing pattern: {pattern}: {e}') from e

From 660e8321f505a497e230b9d4d41f0f59d283645d Mon Sep 17 00:00:00 2001
From: ochafik <ochafik@google.com>
Date: Fri, 8 Mar 2024 01:28:47 +0000
Subject: [PATCH 20/98] Update json-schema-to-grammar.mjs

---
 .../server/public/json-schema-to-grammar.mjs  | 336 ++++++++++++++++--
 1 file changed, 302 insertions(+), 34 deletions(-)

diff --git a/examples/server/public/json-schema-to-grammar.mjs b/examples/server/public/json-schema-to-grammar.mjs
index 3f1b255c262a3..a6b5cad5649cb 100644
--- a/examples/server/public/json-schema-to-grammar.mjs
+++ b/examples/server/public/json-schema-to-grammar.mjs
@@ -1,9 +1,12 @@
-const SPACE_RULE = '" "?';
+const SPACE_RULE = '" "*';
 
 const PRIMITIVE_RULES = {
   boolean: '("true" | "false") space',
   number: '("-"? ([0-9] | [1-9] [0-9]*)) ("." [0-9]+)? ([eE] [-+]? [0-9]+)? space',
   integer: '("-"? ([0-9] | [1-9] [0-9]*)) space',
+  value: 'object | array | string | number | boolean',
+  object: '"{" space ( string ":" space value ("," space string ":" space value)* )? "}" space',
+  array: '"[" space ( value ("," space value)* )? "]" space',
   string: ` "\\"" (
         [^"\\\\] |
         "\\\\" (["\\\\/bfnrt] | "u" [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F])
@@ -12,18 +15,19 @@ const PRIMITIVE_RULES = {
 };
 
 const INVALID_RULE_CHARS_RE = /[^\dA-Za-z-]+/g;
-const GRAMMAR_LITERAL_ESCAPE_RE = /[\n\r"]/g;
-const GRAMMAR_LITERAL_ESCAPES = {'\r': '\\r', '\n': '\\n', '"': '\\"'};
+const GRAMMAR_LITERAL_ESCAPE_RE = /[\n\r]/g;
+const GRAMMAR_LITERAL_ESCAPES = { '\r': '\\r', '\n': '\\n' };
 
 export class SchemaConverter {
   constructor(propOrder) {
     this._propOrder = propOrder || {};
     this._rules = new Map();
     this._rules.set('space', SPACE_RULE);
+    this.refBase = null;
   }
 
   _formatLiteral(literal) {
-    const escaped = JSON.stringify(literal).replace(
+    const escaped = JSON.stringify(literal).slice(1, -1).replace(
       GRAMMAR_LITERAL_ESCAPE_RE,
       m => GRAMMAR_LITERAL_ESCAPES[m]
     );
@@ -50,49 +54,241 @@ export class SchemaConverter {
     return key;
   }
 
+  _resolveRef(ref) {
+    // TODO: use https://github.com/APIDevTools/json-schema-ref-parser
+    try {
+      if (ref != null && ref.startsWith('#/')) {
+        let target = this.refBase;
+        let name = null;
+        for (const sel of ref.split('/').slice(1)) {
+          name = sel;
+          target = target[sel];
+        }
+        return [name, target];
+      }
+      return null;
+    } catch (e) {
+      throw new Error(`Error resolving ref ${ref}: ${e}`);
+    }
+  }
+
+  _generateUnionRule(name, altSchemas) {
+    return altSchemas.map((altSchema, i) =>
+      this.visit(altSchema, `${name}${name ? "-" : ""}${i}`)
+    ).join(' | ');
+  }
+
+  _formatRangeChar(c) {
+    if (c === '-' || c === ']' || c === '\\') {
+      return '\\' + c;
+    } else if (c === '\n') {
+      return '\\n';
+    } else if (c === '\r') {
+      return '\\r';
+    } else if (c === '\t') {
+      return '\\t';
+    } else {
+      return c;
+    }
+  }
+
+  _visitPattern(pattern) {
+    if (!pattern.startsWith('^') || !pattern.endsWith('$')) {
+      throw new Error('Pattern must start with "^" and end with "$"');
+    }
+    pattern = pattern.slice(1, -1);
+
+    try {
+      const visitSeq = seq => {
+        const out = [];
+        for (const [t, g] of groupBy(seq, x => x[0])) {
+          const gList = Array.from(g);
+          // Merge consecutive literals
+          if (t === RegExp.LITERAL && gList.length > 1) {
+            out.push(this._formatLiteral(gList.map(x => String.fromCharCode(x[1])).join('')));
+          } else {
+            out.push(...gList.map(visit));
+          }
+        }
+        if (out.length === 1) {
+          return out[0];
+        }
+        return '(' + out.join(' ') + ')';
+      };
+
+      const visit = pattern => {
+        if (pattern[0] === RegExp.LITERAL) {
+          return JSON.stringify(String.fromCharCode(pattern[1]));
+        } else if (pattern[0] === RegExp.NOT_LITERAL) {
+          return `[^${this._formatRangeChar(String.fromCharCode(pattern[1]))}]`;
+        } else if (pattern[0] === RegExp.ANY) {
+          throw new Error('Unsupported pattern: "."');
+        } else if (pattern[0] === RegExp.IN) {
+          const formatRangeComp = c => {
+            if (c[0] === RegExp.LITERAL) {
+              return this._formatRangeChar(String.fromCharCode(c[1]));
+            } else if (c[0] === RegExp.RANGE) {
+              return `${this._formatRangeChar(String.fromCharCode(c[1][0]))}-${this._formatRangeChar(String.fromCharCode(c[1][1]))}`;
+            } else {
+              throw new Error(`Unrecognized pattern: ${JSON.stringify(c)}`);
+            }
+          };
+          return `[${pattern[1].map(formatRangeComp).join('')}]`;
+        } else if (pattern[0] === RegExp.BRANCH) {
+          return '(' + pattern[1][1].map(visit).join(' | ') + ')';
+        } else if (pattern[0] === RegExp.SUBPATTERN) {
+          return '(' + visit(pattern[1][3]) + ')';
+        } else if (pattern[0] === RegExp.MAX_REPEAT) {
+          const [minTimes, maxTimes, sub] = pattern[1];
+          const subRule = visit(sub);
+
+          if (minTimes === 0 && maxTimes == null) {
+            return `${subRule}*`;
+          } else if (minTimes === 0 && maxTimes === 1) {
+            return `${subRule}?`;
+          } else if (minTimes === 1 && maxTimes == null) {
+            return `${subRule}+`;
+          } else {
+            return Array(minTimes).fill(subRule).concat(
+              maxTimes != null ? Array(maxTimes - minTimes).fill(`${subRule}?`) : [`${subRule}*`]
+            ).join(' ');
+          }
+        } else if (pattern instanceof RegExp.SubPattern) {
+          return visitSeq(pattern.data);
+        } else if (Array.isArray(pattern)) {
+          return visitSeq(pattern);
+        } else {
+          throw new Error(`Unrecognized pattern: ${JSON.stringify(pattern)} (${typeof pattern})`);
+        }
+      };
+
+      return visit(RegExp.parse(pattern));
+    } catch (e) {
+      throw new Error(`Error processing pattern: ${pattern}: ${e}`);
+    }
+  }
+
   visit(schema, name) {
+    const oldRefBase = this.refBase;
+    if ('definitions' in schema) {
+      this.refBase = schema;
+    }
+    try {
+      return this._visit(schema, name);
+    } finally {
+      this.refBase = oldRefBase;
+    }
+  }
+
+  _visit(schema, name) {
     const schemaType = schema.type;
+    const ref = schema.$ref;
     const ruleName = name || 'root';
 
-    if (schema.oneOf || schema.anyOf) {
-      const rule = (schema.oneOf || schema.anyOf).map((altSchema, i) =>
-        this.visit(altSchema, `${name}${name ? "-" : ""}${i}`)
-      ).join(' | ');
-
-      return this._addRule(ruleName, rule);
+    if ('oneOf' in schema || 'anyOf' in schema) {
+      return this._addRule(ruleName, this._generateUnionRule(name, schema.oneOf || schema.anyOf));
+    } else if (Array.isArray(schemaType)) {
+      return this._addRule(ruleName, this._generateUnionRule(name, schemaType.map(t => ({ type: t }))));
     } else if ('const' in schema) {
       return this._addRule(ruleName, this._formatLiteral(schema.const));
     } else if ('enum' in schema) {
       const rule = schema.enum.map(v => this._formatLiteral(v)).join(' | ');
       return this._addRule(ruleName, rule);
-    } else if (schemaType === 'object' && 'properties' in schema) {
-      // TODO: `required` keyword (from python implementation)
-      const propOrder = this._propOrder;
-      const propPairs = Object.entries(schema.properties).sort((a, b) => {
-        // sort by position in prop_order (if specified) then by key
-        const orderA = typeof propOrder[a[0]] === 'number' ? propOrder[a[0]] : Infinity;
-        const orderB = typeof propOrder[b[0]] === 'number' ? propOrder[b[0]] : Infinity;
-        return orderA - orderB || a[0].localeCompare(b[0]);
-      });
-
-      let rule = '"{" space';
-      propPairs.forEach(([propName, propSchema], i) => {
-        const propRuleName = this.visit(propSchema, `${name}${name ? "-" : ""}${propName}`);
-        if (i > 0) {
-          rule += ' "," space';
+    } else if ((schemaType == null || schemaType === 'object') && 'properties' in schema) {
+      const required = new Set(schema.required || []);
+      const { properties } = schema;
+      return this._addRule(ruleName, this._buildObjectRule(Object.entries(properties), required, name));
+    } else if (schemaType === 'object' && 'allOf' in schema) {
+      const required = new Set();
+      const properties = [];
+      const addComponent = (compSchema, isRequired) => {
+        const compRef = compSchema.$ref;
+        if (compRef != null) {
+          const resolved = this._resolveRef(compRef);
+          if (resolved != null) {
+            compSchema = resolved[1];
+          }
         }
-        rule += ` ${this._formatLiteral(propName)} space ":" space ${propRuleName}`;
-      });
-      rule += ' "}" space';
 
-      return this._addRule(ruleName, rule);
+        if ('properties' in compSchema) {
+          for (const [propName, propSchema] of Object.entries(compSchema.properties)) {
+            properties.push([propName, propSchema]);
+            if (isRequired) {
+              required.add(propName);
+            }
+          }
+        }
+      };
+
+      for (const t of schema.allOf) {
+        if ('anyOf' in t) {
+          for (const tt of t.anyOf) {
+            addComponent(tt, false);
+          }
+        } else {
+          addComponent(t, true);
+        }
+      }
+
+      return this._addRule(ruleName, this._buildObjectRule(properties, required, name));
+    } else if (schemaType === 'object' && 'additionalProperties' in schema) {
+      let additionalProperties = schema.additionalProperties;
+      if (typeof additionalProperties !== 'object') {
+        additionalProperties = {};
+      }
+
+      const subName = `${name}${name ? "-" : ""}additionalProperties`;
+      const valueRule = this.visit(additionalProperties, `${subName}-value`);
+      const kvRule = this._addRule(`${subName}-kv`, `string ":" space ${valueRule}`);
+      return this._addRule(
+        ruleName,
+        `( ${kvRule} ( "," space ${kvRule} )* )*`
+      );
     } else if (schemaType === 'array' && 'items' in schema) {
-      // TODO `prefixItems` keyword (from python implementation)
-      const itemRuleName = this.visit(schema.items, `${name}${name ? "-" : ""}item`);
-      const rule = `"[" space (${itemRuleName} ("," space ${itemRuleName})*)? "]" space`;
-      return this._addRule(ruleName, rule);
+      // TODO `prefixItems` keyword
+      const { items } = schema;
+      if (Array.isArray(items)) {
+        return this._addRule(
+          ruleName,
+          '"[" space ' +
+          items.map((item, i) => this.visit(item, `${name}-${i}`)).join(' "," space ') +
+          ' "]" space'
+        );
+      } else {
+        const itemRuleName = this.visit(items, `${name}${name ? "-" : ""}item`);
+        const listItemOperator = `( "," space ${itemRuleName} )`;
+        let successiveItems = "";
+        const minItems = schema.minItems || 0;
+        const maxItems = schema.maxItems;
+        if (minItems > 0) {
+          successiveItems = listItemOperator.repeat(minItems - 1);
+        }
+        if (maxItems != null && maxItems > minItems) {
+          successiveItems += `${listItemOperator}?`.repeat(maxItems - minItems);
+        } else {
+          successiveItems += `${listItemOperator}*`;
+        }
+        const rule = minItems === 0
+          ? `"[" space ( ${itemRuleName} ${successiveItems} )? "]" space`
+          : `"[" space ${itemRuleName} ${successiveItems} "]" space`;
+        return this._addRule(ruleName, rule);
+      }
+    } else if ((schemaType == null || schemaType === 'string') && 'pattern' in schema) {
+      return this._addRule(ruleName, this._visitPattern(schema.pattern));
+    } else if ((resolved = this._resolveRef(ref)) != null) {
+      const [refName, definition] = resolved;
+      const defName = name ? `${name}-${refName}` : '';
+      return this.visit(definition, defName);
+    // } else if (ref != null && ref.startsWith('https://')) {
+    //   const refSchema = await fetch(ref).then(res => res.json());
+    //   return this.visit(refSchema, ref);
+    } else if ((schemaType === 'object' && Object.keys(schema).length === 1) || (schemaType == null && Object.keys(schema).length === 0)) {
+      for (const [t, r] of Object.entries(PRIMITIVE_RULES)) {
+        this._addRule(t, r);
+      }
+      return 'object';
     } else {
-      if (!PRIMITIVE_RULES[schemaType]) {
+      if (!(schemaType in PRIMITIVE_RULES)) {
         throw new Error(`Unrecognized schema: ${JSON.stringify(schema)}`);
       }
       return this._addRule(
@@ -102,6 +298,60 @@ export class SchemaConverter {
     }
   }
 
+  _buildObjectRule(properties, required, name) {
+    // TODO: `required` keyword
+    const propOrder = this._propOrder;
+    console.warn(`# properties: ${JSON.stringify(properties)}`);
+    // sort by position in prop_order (if specified) then by original order
+    const sortedProps = properties.map(([name]) => name).sort(
+      (a, b) => (propOrder[a] ?? Infinity) - (propOrder[b] ?? Infinity)
+    );
+
+    const propKvRuleNames = {};
+    for (const [propName, propSchema] of properties) {
+      const propRuleName = this.visit(propSchema, `${name}${name ? "-" : ""}${propName}`);
+      propKvRuleNames[propName] = this._addRule(
+        `${name}${name ? "-" : ""}${propName}-kv`,
+        `${this._formatLiteral(propName)} space ":" space ${propRuleName}`
+      );
+    }
+
+    const requiredProps = sortedProps.filter(k => required.has(k));
+    const optionalProps = sortedProps.filter(k => !required.has(k));
+
+    let rule = '"{" space ';
+    rule += requiredProps.map(k => propKvRuleNames[k]).join(' "," space ');
+
+    if (optionalProps.length > 0) {
+      rule += ' (';
+      if (requiredProps.length > 0) {
+        rule += ' "," space ( ';
+      }
+
+      const getRecursiveRefs = (ks, firstIsOptional) => {
+        const [k, ...rest] = ks;
+        const kvRuleName = propKvRuleNames[k];
+        let res = firstIsOptional ? `( "," space ${kvRuleName} )?` : kvRuleName;
+        if (rest.length > 0) {
+          res += ' ' + this._addRule(
+            `${name}${name ? "-" : ""}${k}-rest`,
+            getRecursiveRefs(rest, true)
+          );
+        }
+        return res;
+      };
+
+      rule += Array.from({ length: optionalProps.length }, (_, i) => getRecursiveRefs(optionalProps.slice(i), false)).join(' | ') + ' ';
+      if (requiredProps.length > 0) {
+        rule += ' ) ';
+      }
+      rule += ' )? ';
+    }
+    rule += ' "}" space ';
+
+    return rule;
+  }
+
   formatGrammar() {
     let grammar = '';
     this._rules.forEach((rule, name) => {
@@ -110,3 +360,21 @@ export class SchemaConverter {
     return grammar;
   }
 }
+
+// Helper function to group elements by a key function
+function* groupBy(iterable, keyFn) {
+  let lastKey = null;
+  let group = [];
+  for (const element of iterable) {
+    const key = keyFn(element);
+    if (lastKey !== null && key !== lastKey) {
+      yield [lastKey, group];
+      group = [];
+    }
+    group.push(element);
+    lastKey = key;
+  }
+  if (group.length > 0) {
+    yield [lastKey, group];
+  }
+}
\ No newline at end of file

From add8fee04ad856c16517886e1c788e699097cabf Mon Sep 17 00:00:00 2001
From: ochafik <ochafik@google.com>
Date: Sun, 10 Mar 2024 13:23:00 +0000
Subject: [PATCH 21/98] Create regex-to-grammar.py

---
 examples/regex-to-grammar.py | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)
 create mode 100644 examples/regex-to-grammar.py

diff --git a/examples/regex-to-grammar.py b/examples/regex-to-grammar.py
new file mode 100644
index 0000000000000..cec4fe01e078d
--- /dev/null
+++ b/examples/regex-to-grammar.py
@@ -0,0 +1,18 @@
+import json, subprocess, sys, os
+
+assert len(sys.argv) == 2
+[_, pattern] = sys.argv
+
+print(subprocess.check_output(
+  [
+    "python",
+    os.path.join(
+      os.path.dirname(os.path.realpath(__file__)),
+      "json-schema-to-grammar.py"), 
+    "-",
+  ],
+  text=True,
+  input=json.dumps({
+    "type": "string",
+    "pattern": pattern,
+  }, indent=2)))
\ No newline at end of file

From 1cde8ded7c387892402deb21462f3bb58fabd80c Mon Sep 17 00:00:00 2001
From: ochafik <ochafik@google.com>
Date: Sun, 10 Mar 2024 13:29:56 +0000
Subject: [PATCH 22/98] json: extract repeated regexp patterns to subrule

---
 examples/json-schema-to-grammar.py | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/examples/json-schema-to-grammar.py b/examples/json-schema-to-grammar.py
index 9118e84c806ae..ce090dd5997e7 100755
--- a/examples/json-schema-to-grammar.py
+++ b/examples/json-schema-to-grammar.py
@@ -86,9 +86,10 @@ def _format_range_char(self, c):
         else:
             return c
 
-    def _visit_pattern(self, pattern):
+    def _visit_pattern(self, pattern, name):
         assert pattern.startswith('^') and pattern.endswith('$'), 'Pattern must start with "^" and end with "$"'
         pattern = pattern[1:-1]
+        next_id = 1
         try:
             def visit_seq(seq):
                 out = []
@@ -104,6 +105,8 @@ def visit_seq(seq):
                 return '(' + ' '.join(out) + ')'
             
             def visit(pattern):
+                nonlocal next_id
+
                 if pattern[0] == re._parser.LITERAL:
                     return json.dumps(chr(pattern[1]))
                 
@@ -133,6 +136,8 @@ def format_range_comp(c):
                     min_times = pattern[1][0]
                     max_times = pattern[1][1] if not pattern[1][1] == re._parser.MAXREPEAT else None
                     sub = visit(pattern[1][2])
+                    sub = self._add_rule(f'{name}-{next_id}', sub)
+                    next_id += 1
 
                     if min_times == 0 and max_times is None:
                         return f'{sub}*'
@@ -255,7 +260,7 @@ def add_component(comp_schema, is_required):
                 return self._add_rule(rule_name, rule)
             
         elif schema_type in (None, 'string') and 'pattern' in schema:
-            return self._add_rule(rule_name, self._visit_pattern(schema['pattern']))
+            return self._add_rule(rule_name, self._visit_pattern(schema['pattern'], rule_name))
 
         elif (resolved := self._resolve_ref(ref)) is not None:
             (ref_name, definition) = resolved

From 259f3505bc0853ae158eea20f50555a670799b36 Mon Sep 17 00:00:00 2001
From: ochafik <ochafik@google.com>
Date: Sun, 10 Mar 2024 13:38:40 +0000
Subject: [PATCH 23/98] Update json-schema-to-grammar.py

---
 examples/json-schema-to-grammar.py | 80 +++++++++++++++---------------
 1 file changed, 40 insertions(+), 40 deletions(-)

diff --git a/examples/json-schema-to-grammar.py b/examples/json-schema-to-grammar.py
index ce090dd5997e7..bedeb18d1aed9 100755
--- a/examples/json-schema-to-grammar.py
+++ b/examples/json-schema-to-grammar.py
@@ -33,7 +33,6 @@ class SchemaConverter:
     def __init__(self, prop_order):
         self._prop_order = prop_order
         self._rules = {'space': SPACE_RULE}
-        self.ref_base = None
 
     def _format_literal(self, literal):
         escaped = GRAMMAR_LITERAL_ESCAPE_RE.sub(
@@ -53,20 +52,44 @@ def _add_rule(self, name, rule):
         self._rules[key] = rule
         return key
 
-    def _resolve_ref(self, ref):
-        # TODO: use https://github.com/APIDevTools/json-schema-ref-parser
-        try:
-            if ref is not None and ref.startswith('#/'):# and 'definitions' in schema:
-                target = self.ref_base
-                name = None
-                for sel in ref.split('/')[1:]:
-                    name = sel
-                    target = target[sel]
-                return (name, target)
-            return None
-        except KeyError as e:
-            raise Exception(f'Error resolving ref {ref}: {e}') from e
-    
+    @staticmethod
+    def resolve_refs(schema: dict, url_cache: Dict[str, dict] = None):
+        if url_cache is None:
+            url_cache = {}
+
+        def visit(n: dict):
+            if isinstance(n, list):
+                return [visit(x) for x in n]
+            elif isinstance(n, dict):
+                ref = n.get('$ref')
+                if ref is not None:
+                    if ref.startswith('#/'):
+                        target = schema
+                        for sel in ref.split('/')[1:]:
+                            assert target is not None and sel in target, f'Error resolving ref {ref}: {sel} not in {target}'
+                            target = target[sel]
+                        
+                        return target
+                    elif ref.startswith('https://'):
+                        import requests
+                        linked_schema = url_cache.get(ref)
+                        if linked_schema is None:
+                            linked_schema = requests.get(ref).json()
+                            url_cache[ref] = linked_schema
+                        return SchemaConverter.resolve_refs(linked_schema, url_cache)
+                    else:
+                        raise ValueError(f'Unsupported ref {ref}')
+                else:
+                    for k in n.keys():
+                        v = n[k]
+                        vv = visit(v)
+                        if vv is not v:
+                            n[k] = vv
+            else:
+                pass
+            return n
+        return visit(schema)
+
     def _generate_union_rule(self, name, alt_schemas):
         return ' | '.join((
             self.visit(alt_schema, f'{name}{"-" if name else ""}{i}')
@@ -163,17 +186,8 @@ def format_range_comp(c):
             raise Exception(f'Error processing pattern: {pattern}: {e}') from e
 
     def visit(self, schema, name):
-        old_ref_base = self.ref_base
-        if 'definitions' in schema:
-            self.ref_base = schema
-        try:
-            return self._visit(schema, name)
-        finally:
-            self.ref_base = old_ref_base
-    
-    def _visit(self, schema, name):
+        assert '$ref' not in schema, f'Unresolved $ref in {schema} (make sure to use {SchemaConverter.resolve_refs.__name__})'
         schema_type = schema.get('type')
-        ref = schema.get('$ref')
         rule_name = name or 'root'
 
         if 'oneOf' in schema or 'anyOf' in schema:
@@ -198,9 +212,6 @@ def _visit(self, schema, name):
             required = set()
             properties = []
             def add_component(comp_schema, is_required):
-                ref = comp_schema.get('$ref')
-                if ref is not None and (resolved := self._resolve_ref(ref)) is not None:
-                    comp_schema = resolved[1]
 
                 if 'properties' in comp_schema:
                     for prop_name, prop_schema in comp_schema['properties'].items():
@@ -262,16 +273,6 @@ def add_component(comp_schema, is_required):
         elif schema_type in (None, 'string') and 'pattern' in schema:
             return self._add_rule(rule_name, self._visit_pattern(schema['pattern'], rule_name))
 
-        elif (resolved := self._resolve_ref(ref)) is not None:
-            (ref_name, definition) = resolved
-            def_name = f'{name}-{ref_name}' if name else ''
-            return self.visit(definition, def_name)
-        
-        elif ref is not None and ref.startswith('https://'):
-            import requests
-            ref_schema = requests.get(ref).json()
-            return self.visit(ref_schema, ref)
-
         elif schema_type == 'object' and len(schema) == 1 or schema_type is None and len(schema) == 0:
             # return 'object'
             for t, r in PRIMITIVE_RULES.items():
@@ -286,9 +287,7 @@ def add_component(comp_schema, is_required):
             )
     
     def _build_object_rule(self, properties: List[Tuple[str, Any]], required: Set[str], name: str):
-        # TODO: `required` keyword
         prop_order = self._prop_order
-        print(f'# properties: {properties}', file=sys.stderr)
         # sort by position in prop_order (if specified) then by original order
         sorted_props = [kv[0] for _, kv in sorted(enumerate(properties), key=lambda ikv: (prop_order.get(ikv[1][0], len(prop_order)), ikv[0]))]
 
@@ -370,6 +369,7 @@ def main(args_in = None):
     else:
         with open(args.schema) as f:
             schema = json.load(f)
+    schema = SchemaConverter.resolve_refs(schema)
     prop_order = {name: idx for idx, name in enumerate(args.prop_order)}
     converter = SchemaConverter(prop_order)
     converter.visit(schema, '')

From b061de52a7c2c6d5abcdc0651fb95b224296244b Mon Sep 17 00:00:00 2001
From: ochafik <ochafik@google.com>
Date: Sun, 10 Mar 2024 13:49:27 +0000
Subject: [PATCH 24/98] Update json-schema-to-grammar.py

---
 examples/json-schema-to-grammar.py | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/examples/json-schema-to-grammar.py b/examples/json-schema-to-grammar.py
index bedeb18d1aed9..21bfd1ffc07ca 100755
--- a/examples/json-schema-to-grammar.py
+++ b/examples/json-schema-to-grammar.py
@@ -208,7 +208,7 @@ def visit(self, schema, name):
             properties = schema['properties']
             return self._add_rule(rule_name, self._build_object_rule(properties.items(), required, name))
 
-        elif schema_type == 'object' and 'allOf' in schema:
+        elif schema_type in (None, 'object') and 'allOf' in schema:
             required = set()
             properties = []
             def add_component(comp_schema, is_required):
@@ -228,7 +228,7 @@ def add_component(comp_schema, is_required):
 
             return self._add_rule(rule_name, self._build_object_rule(properties, required, name))
 
-        elif schema_type == 'object' and 'additionalProperties' in schema:
+        elif schema_type in (None, 'object') and 'additionalProperties' in schema:
             additional_properties = schema['additionalProperties']
             if not isinstance(additional_properties, dict):
                 additional_properties = {}
@@ -240,7 +240,7 @@ def add_component(comp_schema, is_required):
                 rule_name,
                 f'( {kv_rule} ( "," space {kv_rule} )* )*')
 
-        elif schema_type == 'array' and 'items' in schema:
+        elif schema_type in (None, 'array') and 'items' in schema:
             # TODO `prefixItems` keyword
             items = schema['items']
             if isinstance(items, list):

From ba57964f928a74fef5a3f7d766e214e0f2d6a72a Mon Sep 17 00:00:00 2001
From: ochafik <ochafik@google.com>
Date: Sun, 10 Mar 2024 14:42:39 +0000
Subject: [PATCH 25/98] Update json-schema-to-grammar.py

---
 examples/json-schema-to-grammar.py | 95 +++++++++++++++++++-----------
 1 file changed, 59 insertions(+), 36 deletions(-)

diff --git a/examples/json-schema-to-grammar.py b/examples/json-schema-to-grammar.py
index 21bfd1ffc07ca..8c8017d585e8f 100755
--- a/examples/json-schema-to-grammar.py
+++ b/examples/json-schema-to-grammar.py
@@ -33,6 +33,8 @@ class SchemaConverter:
     def __init__(self, prop_order):
         self._prop_order = prop_order
         self._rules = {'space': SPACE_RULE}
+        self._refs = {}
+        self._refs_being_resolved = set()
 
     def _format_literal(self, literal):
         escaped = GRAMMAR_LITERAL_ESCAPE_RE.sub(
@@ -52,41 +54,47 @@ def _add_rule(self, name, rule):
         self._rules[key] = rule
         return key
 
-    @staticmethod
-    def resolve_refs(schema: dict, url_cache: Dict[str, dict] = None):
-        if url_cache is None:
-            url_cache = {}
-
+    def resolve_refs(self, schema: dict, url: str):
+        '''
+            Resolves all $ref fields in the given schema, fetching any remote schemas,
+            replacing $ref with absolute reference URL and populating self._refs with the
+            respective referenced (sub)schema dictionaries.
+        '''
         def visit(n: dict):
             if isinstance(n, list):
                 return [visit(x) for x in n]
             elif isinstance(n, dict):
                 ref = n.get('$ref')
-                if ref is not None:
-                    if ref.startswith('#/'):
-                        target = schema
-                        for sel in ref.split('/')[1:]:
-                            assert target is not None and sel in target, f'Error resolving ref {ref}: {sel} not in {target}'
-                            target = target[sel]
-                        
-                        return target
-                    elif ref.startswith('https://'):
+                if ref is not None and ref not in self._refs:
+                    if ref.startswith('https://'):
                         import requests
-                        linked_schema = url_cache.get(ref)
-                        if linked_schema is None:
-                            linked_schema = requests.get(ref).json()
-                            url_cache[ref] = linked_schema
-                        return SchemaConverter.resolve_refs(linked_schema, url_cache)
+                        
+                        frag_split = ref.split('#')
+                        base_url = frag_split[0]
+
+                        target = self._refs.get(base_url)
+                        if target is None:
+                            target = self.resolve_refs(requests.get(ref).json(), base_url)
+                            self._refs[base_url] = target
+
+                        if len(frag_split) == 1 or frag_split[-1] == '':
+                            return
+                    elif ref.startswith('#/'):
+                        target = schema
+                        ref = f'{url}{ref}'
+                        n['$ref'] = ref
                     else:
                         raise ValueError(f'Unsupported ref {ref}')
+                    
+                    for sel in ref.split('#')[-1].split('/')[1:]:
+                        assert target is not None and sel in target, f'Error resolving ref {ref}: {sel} not in {target}'
+                        target = target[sel]
+                    
+                    self._refs[ref] = target
                 else:
-                    for k in n.keys():
-                        v = n[k]
-                        vv = visit(v)
-                        if vv is not v:
-                            n[k] = vv
-            else:
-                pass
+                    for v in n.values():
+                        visit(v)
+            
             return n
         return visit(schema)
 
@@ -96,7 +104,6 @@ def _generate_union_rule(self, name, alt_schemas):
             for i, alt_schema in enumerate(alt_schemas)
         ))
 
-
     def _format_range_char(self, c):
         if c in ('-', ']', '\\'):
             return '\\' + chr(c)
@@ -185,12 +192,23 @@ def format_range_comp(c):
         except BaseException as e:
             raise Exception(f'Error processing pattern: {pattern}: {e}') from e
 
+    def _resolve_ref(self, ref):
+        ref_name = ref.split('/')[-1]
+        if ref_name not in self._rules and ref not in self._refs_being_resolved:
+            self._refs_being_resolved.add(ref)
+            resolved = self._refs[ref]
+            ref_name = self.visit(resolved, ref_name)
+            self._refs_being_resolved.remove(ref)
+        return ref_name
+    
     def visit(self, schema, name):
-        assert '$ref' not in schema, f'Unresolved $ref in {schema} (make sure to use {SchemaConverter.resolve_refs.__name__})'
         schema_type = schema.get('type')
         rule_name = name or 'root'
 
-        if 'oneOf' in schema or 'anyOf' in schema:
+        if (ref := schema.get('$ref')) is not None:
+            return self._resolve_ref(ref)
+
+        elif 'oneOf' in schema or 'anyOf' in schema:
             return self._add_rule(rule_name, self._generate_union_rule(name, schema.get('oneOf') or schema['anyOf']))
         
         elif isinstance(schema_type, list):
@@ -205,14 +223,17 @@ def visit(self, schema, name):
 
         elif schema_type in (None, 'object') and 'properties' in schema:
             required = set(schema.get('required', []))
-            properties = schema['properties']
-            return self._add_rule(rule_name, self._build_object_rule(properties.items(), required, name))
+            properties = list(schema['properties'].items())
+            return self._add_rule(rule_name, self._build_object_rule(properties, required, name))
 
         elif schema_type in (None, 'object') and 'allOf' in schema:
             required = set()
             properties = []
+            hybrid_name = name
             def add_component(comp_schema, is_required):
-
+                if (ref := comp_schema.get('$ref')) is not None:
+                    comp_schema = self._refs[ref]
+                
                 if 'properties' in comp_schema:
                     for prop_name, prop_schema in comp_schema['properties'].items():
                         properties.append((prop_name, prop_schema))
@@ -226,7 +247,7 @@ def add_component(comp_schema, is_required):
                 else:
                     add_component(t, is_required=True)
 
-            return self._add_rule(rule_name, self._build_object_rule(properties, required, name))
+            return self._add_rule(rule_name, self._build_object_rule(properties, required, hybrid_name))
 
         elif schema_type in (None, 'object') and 'additionalProperties' in schema:
             additional_properties = schema['additionalProperties']
@@ -361,17 +382,19 @@ def main(args_in = None):
     parser.add_argument('schema', help='file containing JSON schema ("-" for stdin)')
     args = parser.parse_args(args_in)
 
-    if args.schema.startswith('https://'):
+    if (url := args.schema.startswith('https://')):
         import requests
-        schema = requests.get(args.schema).json()
+        schema = requests.get(url).json()
     elif args.schema == '-':
+        url = 'stdin'
         schema = json.load(sys.stdin)
     else:
+        url = f'file://{args.schema}'
         with open(args.schema) as f:
             schema = json.load(f)
-    schema = SchemaConverter.resolve_refs(schema)
     prop_order = {name: idx for idx, name in enumerate(args.prop_order)}
     converter = SchemaConverter(prop_order)
+    schema = converter.resolve_refs(schema, url)
     converter.visit(schema, '')
     print(converter.format_grammar())
 

From f37ad0a04325256c97c5bff448679e810a497670 Mon Sep 17 00:00:00 2001
From: ochafik <ochafik@google.com>
Date: Sun, 10 Mar 2024 14:55:03 +0000
Subject: [PATCH 26/98] json: handle schema from pydantic Optional fields

---
 examples/json-schema-to-grammar.py | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/examples/json-schema-to-grammar.py b/examples/json-schema-to-grammar.py
index 8c8017d585e8f..8e6f980a3347a 100755
--- a/examples/json-schema-to-grammar.py
+++ b/examples/json-schema-to-grammar.py
@@ -314,6 +314,25 @@ def _build_object_rule(self, properties: List[Tuple[str, Any]], required: Set[st
 
         prop_kv_rule_names = {}
         for prop_name, prop_schema in properties:
+            # Note: this is to handle how Pydantic represents optional properties
+            #   import pydantic, typing
+            #   class Foo(pydantic.BaseModel):
+            #     bar: typing.Optional[str] = None
+            #   print(Foo.model_json_schema())
+            #   {
+            #     "properties": {
+            #       "bar": {"anyOf": [{"type": "string"}, {"type": "null"}]}
+            #     },
+            #     "required": ["bar"]
+            #   }
+            if 'anyOf' in prop_schema and any(s.get('type') == 'null' for s in prop_schema['anyOf']):
+                required.remove(prop_name)
+                alts = [s for s in prop_schema['anyOf'] if s.get('type') != 'null']
+                if len(alts) == 1:
+                    prop_schema = alts[0]
+                else:
+                    prop_schema = {'anyOf': alts}
+
             prop_rule_name = self.visit(prop_schema, f'{name}{"-" if name else ""}{prop_name}')
             prop_kv_rule_names[prop_name] = self._add_rule(
                 f'{name}{"-" if name else ""}{prop_name}-kv',

From 307110ad2cf36dc622778d2d23c002c9d8541ecb Mon Sep 17 00:00:00 2001
From: ochafik <ochafik@google.com>
Date: Sun, 10 Mar 2024 15:00:07 +0000
Subject: [PATCH 27/98] Update json-schema-to-grammar.py

---
 examples/json-schema-to-grammar.py | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/examples/json-schema-to-grammar.py b/examples/json-schema-to-grammar.py
index 8e6f980a3347a..b76aa5a349db2 100755
--- a/examples/json-schema-to-grammar.py
+++ b/examples/json-schema-to-grammar.py
@@ -394,14 +394,16 @@ def main(args_in = None):
         type=lambda s: s.split(','),
         help='''
             comma-separated property names defining the order of precedence for object properties;
-            properties not specified here are given lower precedence than those that are, and are
-            sorted alphabetically
+            properties not specified here are given lower precedence than those that are, and
+            are kept in their original order from the schema. Required properties are always
+            given precedence over optional properties.
         '''
     )
     parser.add_argument('schema', help='file containing JSON schema ("-" for stdin)')
     args = parser.parse_args(args_in)
 
-    if (url := args.schema.startswith('https://')):
+    if args.schema.startswith('https://'):
+        url = args.schema
         import requests
         schema = requests.get(url).json()
     elif args.schema == '-':

From 5764d9ffbcafe513a10e02d90f319ab2d53baa8b Mon Sep 17 00:00:00 2001
From: ochafik <ochafik@google.com>
Date: Sun, 10 Mar 2024 15:33:59 +0000
Subject: [PATCH 28/98] Update json-schema-to-grammar.py

---
 examples/json-schema-to-grammar.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/examples/json-schema-to-grammar.py b/examples/json-schema-to-grammar.py
index b76aa5a349db2..b53c2c29f4c9f 100755
--- a/examples/json-schema-to-grammar.py
+++ b/examples/json-schema-to-grammar.py
@@ -326,7 +326,8 @@ def _build_object_rule(self, properties: List[Tuple[str, Any]], required: Set[st
             #     "required": ["bar"]
             #   }
             if 'anyOf' in prop_schema and any(s.get('type') == 'null' for s in prop_schema['anyOf']):
-                required.remove(prop_name)
+                if prop_name in required:
+                    required.remove(prop_name)
                 alts = [s for s in prop_schema['anyOf'] if s.get('type') != 'null']
                 if len(alts) == 1:
                     prop_schema = alts[0]

From 364bf9ec3db7001d358ffdacdd7f155b31b8d03c Mon Sep 17 00:00:00 2001
From: ochafik <ochafik@google.com>
Date: Sun, 10 Mar 2024 15:44:51 +0000
Subject: [PATCH 29/98] Update ts-type-to-grammar.sh

---
 examples/ts-type-to-grammar.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/examples/ts-type-to-grammar.sh b/examples/ts-type-to-grammar.sh
index 33c1eec2ce903..bc13c547d4626 100755
--- a/examples/ts-type-to-grammar.sh
+++ b/examples/ts-type-to-grammar.sh
@@ -21,6 +21,6 @@ echo "export type MyType = $type" > "$DTS_FILE"
 # npx typescript-json-schema --defaultProps --required "$DTS_FILE" MyType | tee "$SCHEMA_FILE" >&2
 
 # https://github.com/vega/ts-json-schema-generator
-npx ts-json-schema-generator --path "$DTS_FILE" --type MyType -e none | tee "$SCHEMA_FILE" >&2
+npx ts-json-schema-generator --no-top-ref --path "$DTS_FILE" --type MyType -e none | tee "$SCHEMA_FILE" >&2
 
 ./examples/json-schema-to-grammar.py "$SCHEMA_FILE"
\ No newline at end of file

From 8597caa685ce7fe60904c772246b6a68cc75654b Mon Sep 17 00:00:00 2001
From: ochafik <ochafik@google.com>
Date: Sun, 10 Mar 2024 15:47:03 +0000
Subject: [PATCH 30/98] Update ts-type-to-grammar.sh

---
 examples/ts-type-to-grammar.sh | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/examples/ts-type-to-grammar.sh b/examples/ts-type-to-grammar.sh
index bc13c547d4626..efdccfd633e03 100755
--- a/examples/ts-type-to-grammar.sh
+++ b/examples/ts-type-to-grammar.sh
@@ -17,10 +17,13 @@ SCHEMA_FILE="$TMPDIR/schema.json"
 
 echo "export type MyType = $type" > "$DTS_FILE"
 
-# https://github.com/YousefED/typescript-json-schema
-# npx typescript-json-schema --defaultProps --required "$DTS_FILE" MyType | tee "$SCHEMA_FILE" >&2
 
+# This is a fork of typescript-json-schema, actively maintained as of March 2024:
 # https://github.com/vega/ts-json-schema-generator
 npx ts-json-schema-generator --no-top-ref --path "$DTS_FILE" --type MyType -e none | tee "$SCHEMA_FILE" >&2
 
+# Not actively maintained:
+# https://github.com/YousefED/typescript-json-schema
+# npx typescript-json-schema --defaultProps --required "$DTS_FILE" MyType | tee "$SCHEMA_FILE" >&2
+
 ./examples/json-schema-to-grammar.py "$SCHEMA_FILE"
\ No newline at end of file

From dab2ea91a609c242f3df5a018f20bf236a825d44 Mon Sep 17 00:00:00 2001
From: ochafik <ochafik@google.com>
Date: Sun, 10 Mar 2024 16:48:27 +0000
Subject: [PATCH 31/98] json: simplify nullable fields handling

---
 examples/json-schema-to-grammar.py | 22 +---------------------
 1 file changed, 1 insertion(+), 21 deletions(-)

diff --git a/examples/json-schema-to-grammar.py b/examples/json-schema-to-grammar.py
index b53c2c29f4c9f..558fb4f2f070f 100755
--- a/examples/json-schema-to-grammar.py
+++ b/examples/json-schema-to-grammar.py
@@ -295,7 +295,7 @@ def add_component(comp_schema, is_required):
             return self._add_rule(rule_name, self._visit_pattern(schema['pattern'], rule_name))
 
         elif schema_type == 'object' and len(schema) == 1 or schema_type is None and len(schema) == 0:
-            # return 'object'
+            # This depends on all primitive types
             for t, r in PRIMITIVE_RULES.items():
                 self._add_rule(t, r)
             return 'object'
@@ -314,26 +314,6 @@ def _build_object_rule(self, properties: List[Tuple[str, Any]], required: Set[st
 
         prop_kv_rule_names = {}
         for prop_name, prop_schema in properties:
-            # Note: this is to handle how Pydantic represents optional properties
-            #   import pydantic, typing
-            #   class Foo(pydantic.BaseModel):
-            #     bar: typing.Optional[str] = None
-            #   print(Foo.model_json_schema())
-            #   {
-            #     "properties": {
-            #       "bar": {"anyOf": [{"type": "string"}, {"type": "null"}]}
-            #     },
-            #     "required": ["bar"]
-            #   }
-            if 'anyOf' in prop_schema and any(s.get('type') == 'null' for s in prop_schema['anyOf']):
-                if prop_name in required:
-                    required.remove(prop_name)
-                alts = [s for s in prop_schema['anyOf'] if s.get('type') != 'null']
-                if len(alts) == 1:
-                    prop_schema = alts[0]
-                else:
-                    prop_schema = {'anyOf': alts}
-
             prop_rule_name = self.visit(prop_schema, f'{name}{"-" if name else ""}{prop_name}')
             prop_kv_rule_names[prop_name] = self._add_rule(
                 f'{name}{"-" if name else ""}{prop_name}-kv',

From ade339d55e6955017aab5927c7eb56b5ab5cb86d Mon Sep 17 00:00:00 2001
From: ochafik <ochafik@google.com>
Date: Sun, 10 Mar 2024 16:48:56 +0000
Subject: [PATCH 32/98] json: accept duplicate identical rules

---
 examples/json-schema-to-grammar.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/examples/json-schema-to-grammar.py b/examples/json-schema-to-grammar.py
index 558fb4f2f070f..161704c6753b7 100755
--- a/examples/json-schema-to-grammar.py
+++ b/examples/json-schema-to-grammar.py
@@ -48,7 +48,7 @@ def _add_rule(self, name, rule):
             key = esc_name
         else:
             i = 0
-            while f'{esc_name}{i}' in self._rules:
+            while f'{esc_name}{i}' in self._rules and self._rules[f'{esc_name}{i}'] != rule:
                 i += 1
             key = f'{esc_name}{i}'
         self._rules[key] = rule

From e8b78c28eb049c11cef76278fce991f23a068f82 Mon Sep 17 00:00:00 2001
From: ochafik <ochafik@google.com>
Date: Sun, 10 Mar 2024 16:49:15 +0000
Subject: [PATCH 33/98] json: revert space to 1 at most

---
 examples/json-schema-to-grammar.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/examples/json-schema-to-grammar.py b/examples/json-schema-to-grammar.py
index 161704c6753b7..becd35b8ed229 100755
--- a/examples/json-schema-to-grammar.py
+++ b/examples/json-schema-to-grammar.py
@@ -8,7 +8,7 @@
 
 # whitespace is constrained to a single space char to prevent model "running away" in
 # whitespace. Also maybe improves generation quality?
-SPACE_RULE = '" "*'
+SPACE_RULE = '" "?'
 
 PRIMITIVE_RULES = {
     'boolean': '("true" | "false") space',

From 37b59d1d3b4bdb4728c96b936c4dc3b1b6e65d5d Mon Sep 17 00:00:00 2001
From: ochafik <ochafik@google.com>
Date: Sun, 10 Mar 2024 16:49:53 +0000
Subject: [PATCH 34/98] json: reuse regexp pattern subrules

---
 examples/json-schema-to-grammar.py | 16 ++++++++++------
 1 file changed, 10 insertions(+), 6 deletions(-)

diff --git a/examples/json-schema-to-grammar.py b/examples/json-schema-to-grammar.py
index becd35b8ed229..78356ef9be84b 100755
--- a/examples/json-schema-to-grammar.py
+++ b/examples/json-schema-to-grammar.py
@@ -119,7 +119,7 @@ def _format_range_char(self, c):
     def _visit_pattern(self, pattern, name):
         assert pattern.startswith('^') and pattern.endswith('$'), 'Pattern must start with "^" and end with "$"'
         pattern = pattern[1:-1]
-        next_id = 1
+        sub_rule_ids = {}
         try:
             def visit_seq(seq):
                 out = []
@@ -135,7 +135,7 @@ def visit_seq(seq):
                 return '(' + ' '.join(out) + ')'
             
             def visit(pattern):
-                nonlocal next_id
+                nonlocal sub_rule_ids
 
                 if pattern[0] == re._parser.LITERAL:
                     return json.dumps(chr(pattern[1]))
@@ -166,8 +166,12 @@ def format_range_comp(c):
                     min_times = pattern[1][0]
                     max_times = pattern[1][1] if not pattern[1][1] == re._parser.MAXREPEAT else None
                     sub = visit(pattern[1][2])
-                    sub = self._add_rule(f'{name}-{next_id}', sub)
-                    next_id += 1
+
+                    id = sub_rule_ids.get(sub)
+                    if id is None:
+                        id = self._add_rule(f'{name}-{len(sub_rule_ids) + 1}', sub)
+                        sub_rule_ids[sub] = id
+                    sub = id
 
                     if min_times == 0 and max_times is None:
                         return f'{sub}*'
@@ -188,7 +192,7 @@ def format_range_comp(c):
                 else:
                     raise ValueError(f'Unrecognized pattern: {pattern} ({type(pattern)})')
 
-            return visit(re._parser.parse(pattern))
+            return self._add_rule(name, visit(re._parser.parse(pattern)))
         except BaseException as e:
             raise Exception(f'Error processing pattern: {pattern}: {e}') from e
 
@@ -292,7 +296,7 @@ def add_component(comp_schema, is_required):
                 return self._add_rule(rule_name, rule)
             
         elif schema_type in (None, 'string') and 'pattern' in schema:
-            return self._add_rule(rule_name, self._visit_pattern(schema['pattern'], rule_name))
+            return self._visit_pattern(schema['pattern'], rule_name)
 
         elif schema_type == 'object' and len(schema) == 1 or schema_type is None and len(schema) == 0:
             # This depends on all primitive types

From e8f25d6f0c11546e10979979cf99e28c2e5a308a Mon Sep 17 00:00:00 2001
From: ochafik <ochafik@google.com>
Date: Sun, 10 Mar 2024 16:50:06 +0000
Subject: [PATCH 35/98] json: handle uuid string format

---
 examples/json-schema-to-grammar.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/examples/json-schema-to-grammar.py b/examples/json-schema-to-grammar.py
index 78356ef9be84b..33ab3ad9b4d3f 100755
--- a/examples/json-schema-to-grammar.py
+++ b/examples/json-schema-to-grammar.py
@@ -298,6 +298,9 @@ def add_component(comp_schema, is_required):
         elif schema_type in (None, 'string') and 'pattern' in schema:
             return self._visit_pattern(schema['pattern'], rule_name)
 
+        elif schema_type in (None, 'string') and re.match(r'^uuid[1-5]?$', schema.get('format', '')):
+            return self._visit_pattern('^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{12})$', 'uuid')
+
         elif schema_type == 'object' and len(schema) == 1 or schema_type is None and len(schema) == 0:
             # This depends on all primitive types
             for t, r in PRIMITIVE_RULES.items():

From 54291e10d0d7f69f6b43c3281b2a3d403dd4db25 Mon Sep 17 00:00:00 2001
From: ochafik <ochafik@google.com>
Date: Sun, 10 Mar 2024 17:19:27 +0000
Subject: [PATCH 36/98] json: fix literal escapes

---
 examples/json-schema-to-grammar.py | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/examples/json-schema-to-grammar.py b/examples/json-schema-to-grammar.py
index 33ab3ad9b4d3f..0559bd3d2307d 100755
--- a/examples/json-schema-to-grammar.py
+++ b/examples/json-schema-to-grammar.py
@@ -25,8 +25,8 @@
 }
 
 INVALID_RULE_CHARS_RE = re.compile(r'[^a-zA-Z0-9-]+')
-GRAMMAR_LITERAL_ESCAPE_RE = re.compile(r'[\r\n]')
-GRAMMAR_LITERAL_ESCAPES = {'\r': '\\r', '\n': '\\n'}
+GRAMMAR_LITERAL_ESCAPE_RE = re.compile(r'[\r\n"]')
+GRAMMAR_LITERAL_ESCAPES = {'\r': '\\r', '\n': '\\n', '"': '\\"'}
 
 
 class SchemaConverter:
@@ -38,7 +38,7 @@ def __init__(self, prop_order):
 
     def _format_literal(self, literal):
         escaped = GRAMMAR_LITERAL_ESCAPE_RE.sub(
-            lambda m: GRAMMAR_LITERAL_ESCAPES.get(m.group(0)), json.dumps(literal)[1:-1]
+            lambda m: GRAMMAR_LITERAL_ESCAPES.get(m.group(0)), json.dumps(literal)
         )
         return f'"{escaped}"'
 

From f57b467c746332a47fb4b2dc38759f3cd3589830 Mon Sep 17 00:00:00 2001
From: ochafik <ochafik@google.com>
Date: Sun, 10 Mar 2024 17:20:05 +0000
Subject: [PATCH 37/98] json: add --allow-fetch

---
 examples/json-schema-to-grammar.py | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/examples/json-schema-to-grammar.py b/examples/json-schema-to-grammar.py
index 0559bd3d2307d..b82ed3e90d68a 100755
--- a/examples/json-schema-to-grammar.py
+++ b/examples/json-schema-to-grammar.py
@@ -30,8 +30,9 @@
 
 
 class SchemaConverter:
-    def __init__(self, prop_order):
+    def __init__(self, prop_order, allow_fetch):
         self._prop_order = prop_order
+        self._allow_fetch = allow_fetch
         self._rules = {'space': SPACE_RULE}
         self._refs = {}
         self._refs_being_resolved = set()
@@ -67,6 +68,7 @@ def visit(n: dict):
                 ref = n.get('$ref')
                 if ref is not None and ref not in self._refs:
                     if ref.startswith('https://'):
+                        assert self._allow_fetch, 'Fetching remote schemas is not allowed (use --allow-fetch for force)'
                         import requests
                         
                         frag_split = ref.split('#')
@@ -298,6 +300,7 @@ def add_component(comp_schema, is_required):
         elif schema_type in (None, 'string') and 'pattern' in schema:
             return self._visit_pattern(schema['pattern'], rule_name)
 
+        # TODO: support string formats "uri", "date", "date-time"
         elif schema_type in (None, 'string') and re.match(r'^uuid[1-5]?$', schema.get('format', '')):
             return self._visit_pattern('^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{12})$', 'uuid')
 
@@ -309,6 +312,7 @@ def add_component(comp_schema, is_required):
         
         else:
             assert schema_type in PRIMITIVE_RULES, f'Unrecognized schema: {schema}'
+            # TODO: support minimum, maximum, exclusiveMinimum, exclusiveMaximum at least for zero
             return self._add_rule(
                 'root' if rule_name == 'root' else schema_type,
                 PRIMITIVE_RULES[schema_type]
@@ -387,6 +391,10 @@ def main(args_in = None):
             given precedence over optional properties.
         '''
     )
+    parser.add_argument(
+        '--allow-fetch',
+        default=False,
+        help='Whether to allow fetching referenced schemas over HTTPS')
     parser.add_argument('schema', help='file containing JSON schema ("-" for stdin)')
     args = parser.parse_args(args_in)
 
@@ -402,7 +410,7 @@ def main(args_in = None):
         with open(args.schema) as f:
             schema = json.load(f)
     prop_order = {name: idx for idx, name in enumerate(args.prop_order)}
-    converter = SchemaConverter(prop_order)
+    converter = SchemaConverter(prop_order, args.allow_fetch)
     schema = converter.resolve_refs(schema, url)
     converter.visit(schema, '')
     print(converter.format_grammar())

From d1fda6f450a310f00202007c2da3664f12588b00 Mon Sep 17 00:00:00 2001
From: ochafik <ochafik@google.com>
Date: Sun, 10 Mar 2024 17:32:45 +0000
Subject: [PATCH 38/98] json: simplify range escapes

---
 examples/json-schema-to-grammar.py | 26 ++++++++++----------------
 1 file changed, 10 insertions(+), 16 deletions(-)

diff --git a/examples/json-schema-to-grammar.py b/examples/json-schema-to-grammar.py
index b82ed3e90d68a..c6d9dffe9233f 100755
--- a/examples/json-schema-to-grammar.py
+++ b/examples/json-schema-to-grammar.py
@@ -26,7 +26,8 @@
 
 INVALID_RULE_CHARS_RE = re.compile(r'[^a-zA-Z0-9-]+')
 GRAMMAR_LITERAL_ESCAPE_RE = re.compile(r'[\r\n"]')
-GRAMMAR_LITERAL_ESCAPES = {'\r': '\\r', '\n': '\\n', '"': '\\"'}
+GRAMMAR_RANGE_LITERAL_ESCAPE_RE = re.compile(r'[\r\n"\]\-\\]')
+GRAMMAR_LITERAL_ESCAPES = {'\r': '\\r', '\n': '\\n', '"': '\\"', '-': '\\-', ']': '\\]'}
 
 
 class SchemaConverter:
@@ -43,6 +44,11 @@ def _format_literal(self, literal):
         )
         return f'"{escaped}"'
 
+    def _format_range_char(self, literal):
+        return GRAMMAR_RANGE_LITERAL_ESCAPE_RE.sub(
+            lambda m: GRAMMAR_LITERAL_ESCAPES.get(m.group(0)), json.dumps(literal)[1:-1]
+        )
+
     def _add_rule(self, name, rule):
         esc_name = INVALID_RULE_CHARS_RE.sub('-', name)
         if esc_name not in self._rules or self._rules[esc_name] == rule:
@@ -106,18 +112,6 @@ def _generate_union_rule(self, name, alt_schemas):
             for i, alt_schema in enumerate(alt_schemas)
         ))
 
-    def _format_range_char(self, c):
-        if c in ('-', ']', '\\'):
-            return '\\' + chr(c)
-        elif c == '\n':
-            return '\\n'
-        elif c == '\r':
-            return '\\r'
-        elif c == '\t':
-            return '\\t'
-        else:
-            return c
-
     def _visit_pattern(self, pattern, name):
         assert pattern.startswith('^') and pattern.endswith('$'), 'Pattern must start with "^" and end with "$"'
         pattern = pattern[1:-1]
@@ -125,9 +119,9 @@ def _visit_pattern(self, pattern, name):
         try:
             def visit_seq(seq):
                 out = []
+                # Merge consecutive literals
                 for t, g in itertools.groupby(seq, lambda x: x[0]):
                     g = list(g)
-                    # Merge consecutive literals
                     if t == re._parser.LITERAL and len(g) > 1:
                         out.append(self._format_literal(''.join(chr(x[1]) for x in g)))
                     else:
@@ -149,14 +143,14 @@ def visit(pattern):
                     raise ValueError('Unsupported pattern: "."')
                 
                 elif pattern[0] == re._parser.IN:
-                    def format_range_comp(c):
+                    def format_range_component(c):
                         if c[0] == re._parser.LITERAL:
                             return self._format_range_char(chr(c[1]))
                         elif c[0] == re._parser.RANGE:
                             return f'{self._format_range_char(chr(c[1][0]))}-{self._format_range_char(chr(c[1][1]))}'
                         else:
                             raise ValueError(f'Unrecognized pattern: {c}')
-                    return f'[{"".join(format_range_comp(c) for c in pattern[1])}]'
+                    return f'[{"".join(format_range_component(c) for c in pattern[1])}]'
                 
                 elif pattern[0] == re._parser.BRANCH:
                     return '(' + ' | '.join((visit(p) for p in pattern[1][1])) + ')'

From 478f62ef5c427d9db860ce411727679d282edd27 Mon Sep 17 00:00:00 2001
From: ochafik <ochafik@google.com>
Date: Sun, 10 Mar 2024 17:35:32 +0000
Subject: [PATCH 39/98] json: support negative ranges in patterns

---
 examples/json-schema-to-grammar.py | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/examples/json-schema-to-grammar.py b/examples/json-schema-to-grammar.py
index c6d9dffe9233f..4eb0f6c661a3c 100755
--- a/examples/json-schema-to-grammar.py
+++ b/examples/json-schema-to-grammar.py
@@ -149,8 +149,13 @@ def format_range_component(c):
                         elif c[0] == re._parser.RANGE:
                             return f'{self._format_range_char(chr(c[1][0]))}-{self._format_range_char(chr(c[1][1]))}'
                         else:
-                            raise ValueError(f'Unrecognized pattern: {c}')
-                    return f'[{"".join(format_range_component(c) for c in pattern[1])}]'
+                            raise ValueError(f'Unrecognized pattern: {c} (pattern = {pattern})')
+                    components = pattern[1]
+                    prefix = ''
+                    if len(components) > 0 and components[0][0] == re._parser.NEGATE:
+                        prefix = '^'
+                        components = components[1:]
+                    return f'[{prefix}{"".join(format_range_component(c) for c in components)}]'
                 
                 elif pattern[0] == re._parser.BRANCH:
                     return '(' + ' | '.join((visit(p) for p in pattern[1][1])) + ')'

From 27b1fefdf47b9824fd83ec5339cbdc4a00ac7aeb Mon Sep 17 00:00:00 2001
From: ochafik <ochafik@google.com>
Date: Sun, 10 Mar 2024 17:44:46 +0000
Subject: [PATCH 40/98] Delete commit.txt

---
 examples/commit.txt | 10 ----------
 1 file changed, 10 deletions(-)
 delete mode 100644 examples/commit.txt

diff --git a/examples/commit.txt b/examples/commit.txt
deleted file mode 100644
index 530bd2214b2a0..0000000000000
--- a/examples/commit.txt
+++ /dev/null
@@ -1,10 +0,0 @@
-- Adds support for `required` vs. optional properties, without the risk for repetitions.
-- Adds support for `additionalProperties`
-- Fixes handling of Arrays (`[ , 1]` no longer possible)
-- Fixes ordering: retain original order unless overridden (rather than alphabetical)
-- Add support for `$ref`
-
-https://github.com/vega/ts-json-schema-generator
-
-
-Before

From 0e9494183bdfe78e07040c73c37cb867b4e75b31 Mon Sep 17 00:00:00 2001
From: ochafik <ochafik@google.com>
Date: Mon, 11 Mar 2024 00:24:34 +0000
Subject: [PATCH 41/98] json: custom regex parser, adds dot support &
 JS-portable

---
 examples/json-schema-to-grammar.py | 231 ++++++++++++++++++++---------
 examples/regex-to-grammar.py       |   5 +-
 2 files changed, 160 insertions(+), 76 deletions(-)

diff --git a/examples/json-schema-to-grammar.py b/examples/json-schema-to-grammar.py
index 4eb0f6c661a3c..a8ce11bdd2230 100755
--- a/examples/json-schema-to-grammar.py
+++ b/examples/json-schema-to-grammar.py
@@ -31,9 +31,10 @@
 
 
 class SchemaConverter:
-    def __init__(self, prop_order, allow_fetch):
+    def __init__(self, *, prop_order, allow_fetch, dotall):
         self._prop_order = prop_order
         self._allow_fetch = allow_fetch
+        self._dotall = dotall
         self._rules = {'space': SPACE_RULE}
         self._refs = {}
         self._refs_being_resolved = set()
@@ -113,89 +114,162 @@ def _generate_union_rule(self, name, alt_schemas):
         ))
 
     def _visit_pattern(self, pattern, name):
+        '''
+            Transforms a regular expression pattern into a GBNF rule.
+
+            Input: https://json-schema.org/understanding-json-schema/reference/regular_expressions
+            Output: https://github.com/ggerganov/llama.cpp/blob/master/grammars/README.md
+
+            Unsupported features: negative/positive lookaheads, greedy/non-greedy modifiers.
+
+            Mostly a 1:1 translation, except for {x} / {x,} / {x,y} quantifiers for which
+            we define sub-rules to keep the output lean.
+        '''
+
         assert pattern.startswith('^') and pattern.endswith('$'), 'Pattern must start with "^" and end with "$"'
         pattern = pattern[1:-1]
         sub_rule_ids = {}
-        try:
-            def visit_seq(seq):
-                out = []
-                # Merge consecutive literals
-                for t, g in itertools.groupby(seq, lambda x: x[0]):
-                    g = list(g)
-                    if t == re._parser.LITERAL and len(g) > 1:
-                        out.append(self._format_literal(''.join(chr(x[1]) for x in g)))
-                    else:
-                        out.extend(visit(x) for x in g)
-                if len(out) == 1:
-                    return out[0]
-                return '(' + ' '.join(out) + ')'
-            
-            def visit(pattern):
-                nonlocal sub_rule_ids
 
-                if pattern[0] == re._parser.LITERAL:
-                    return json.dumps(chr(pattern[1]))
-                
-                elif pattern[0] == re._parser.NOT_LITERAL:
-                    return f'[^{self._format_range_char(chr(pattern[1]))}]'
-                
-                elif pattern[0] == re._parser.ANY:
-                    raise ValueError('Unsupported pattern: "."')
-                
-                elif pattern[0] == re._parser.IN:
-                    def format_range_component(c):
-                        if c[0] == re._parser.LITERAL:
-                            return self._format_range_char(chr(c[1]))
-                        elif c[0] == re._parser.RANGE:
-                            return f'{self._format_range_char(chr(c[1][0]))}-{self._format_range_char(chr(c[1][1]))}'
+        i = 0
+        length = len(pattern)
+
+        def transform() -> Tuple[str, bool]:
+            '''
+                Parse a unit at index i (advancing it), and return its string representation + whether it's a literal.
+            '''
+            nonlocal i
+            nonlocal pattern
+            nonlocal sub_rule_ids
+
+            start = i
+            # For each component of this sequence, store its string representation and whether it's a literal.
+            # We only need a flat structure here to apply repetition operators to the last item, and
+            # to merge literals at the and (we're parsing grouped ( sequences ) recursively and don't treat '|' specially
+            # (GBNF's syntax is luckily very close to regular expressions!)
+            seq: list[Tuple[str, bool]] = []
+
+            def get_dot():
+                if self._dotall:
+                    rule = '[\\U00000000-\\U0010FFFF]'
+                else:
+                    # Accept any character... except \n and \r line break chars (\x0A and \xOD)
+                    rule = '[\\U00000000-\\x09\\x0B\\x0C\\x0E-\\U0010FFFF]'
+                return self._add_rule(f'dot', rule)
+
+            def join_seq():
+                nonlocal seq
+                ret = []
+                for is_literal, g in itertools.groupby(seq, lambda x: x[1]):
+                    if is_literal:
+                        lit = ''.join(x[0][1:-1] for x in g)
+                        ret.append((f'"{lit}"', True))
+                    else:
+                        ret.extend(g)
+                if len(ret) == 1:
+                    return ret[0]
+                return (' '.join(x[0] for x in seq), False)
+
+            while i < length:
+                c = pattern[i]
+                if c == '.':
+                    seq.append((get_dot(), False))
+                    i += 1
+                elif c == '(':
+                    i += 1
+                    if i < length:
+                        assert pattern[i] != '?', f'Unsupported pattern syntax "{pattern[i]}" at index {i} of /{pattern}/'
+                    seq.append((f'({transform()[0]})', False))
+                elif c == ')':
+                    i += 1
+                    assert start > 0 and pattern[start-1] == '(', f'Unbalanced parentheses; start = {start}, i = {i}, pattern = {pattern}'
+                    return join_seq()
+                elif c == '[':
+                    square_brackets = c
+                    i += 1
+                    while i < length and pattern[i] != ']':
+                        if pattern[i] == '\\':
+                            square_brackets += pattern[i:i+2]
+                            i += 2
                         else:
-                            raise ValueError(f'Unrecognized pattern: {c} (pattern = {pattern})')
-                    components = pattern[1]
-                    prefix = ''
-                    if len(components) > 0 and components[0][0] == re._parser.NEGATE:
-                        prefix = '^'
-                        components = components[1:]
-                    return f'[{prefix}{"".join(format_range_component(c) for c in components)}]'
-                
-                elif pattern[0] == re._parser.BRANCH:
-                    return '(' + ' | '.join((visit(p) for p in pattern[1][1])) + ')'
-                
-                elif pattern[0] == re._parser.SUBPATTERN:
-                    return '(' + visit(pattern[1][3]) + ')'
-                
-                elif pattern[0] == re._parser.MAX_REPEAT:
-                    min_times = pattern[1][0]
-                    max_times = pattern[1][1] if not pattern[1][1] == re._parser.MAXREPEAT else None
-                    sub = visit(pattern[1][2])
-
-                    id = sub_rule_ids.get(sub)
-                    if id is None:
-                        id = self._add_rule(f'{name}-{len(sub_rule_ids) + 1}', sub)
-                        sub_rule_ids[sub] = id
-                    sub = id
+                            square_brackets += pattern[i]
+                            i += 1
+                    assert i < length, f'Unbalanced square brackets; start = {start}, i = {i}, pattern = {pattern}'
+                    square_brackets += ']'
+                    i += 1
+                    seq.append((square_brackets, False))
+                elif c == '|':
+                    seq.append(('|', False))
+                    i += 1
+                elif c in ('*', '+', '?'):
+                    seq[-1] = (f'{seq[-1][0]}{c}', False)
+                    i += 1
+                elif c == '{':
+                    curly_brackets = c
+                    i += 1
+                    while i < length and pattern[i] != '}':
+                        curly_brackets += pattern[i]
+                        i += 1
+                    assert i < length, f'Unbalanced curly brackets; start = {start}, i = {i}, pattern = {pattern}'
+                    curly_brackets += '}'
+                    i += 1
+                    nums = [s.strip() for s in curly_brackets[1:-1].split(',')]
+                    if len(nums) == 1:
+                        min_times = int(nums[0])
+                        max_times = min_times
+                    else:
+                        assert len(nums) == 2
+                        min_times = int(nums[0]) if nums[0] else 0
+                        max_times = int(nums[1]) if nums[1] else None
+                        
+                    (sub, sub_is_literal) = seq[-1]
 
                     if min_times == 0 and max_times is None:
-                        return f'{sub}*'
+                        seq[-1] = (f'{sub}*', False)
                     elif min_times == 0 and max_times == 1:
-                        return f'{sub}?'
+                        seq[-1] = (f'{sub}?', False)
                     elif min_times == 1 and max_times is None:
-                        return f'{sub}+'
+                        seq[-1] = (f'{sub}+', False)
                     else:
-                        return ' '.join([sub] * min_times + 
-                                        ([f'{sub}?'] * (max_times - min_times) if max_times is not None else [f'{sub}*']))
-                
-                elif isinstance(pattern, re._parser.SubPattern):
-                    return visit_seq(pattern.data)
-                
-                elif isinstance(pattern, list):
-                    return visit_seq(pattern)
-                
+                        if not sub_is_literal:
+                            id = sub_rule_ids.get(sub)
+                            if id is None:
+                                id = self._add_rule(f'{name}-{len(sub_rule_ids) + 1}', sub)
+                                sub_rule_ids[sub] = id
+                            sub = id
+
+                        seq[-1] = (
+                            ' '.join(
+                                ([f'"{sub[1:-1] * min_times}"'] if sub_is_literal else [sub] * min_times) + 
+                                ([f'{sub}?'] * (max_times - min_times) if max_times is not None else [f'{sub}*'])),
+                            False
+                        )
                 else:
-                    raise ValueError(f'Unrecognized pattern: {pattern} ({type(pattern)})')
+                    lit = ''
+                    while i < length and pattern[i] not in ('.', '(', ')', '|', '[', '{', '*', '+', '?') \
+                            and not (i < length - 1 and pattern[i+1] in ('{', '*', '+', '?')):
+                        c = pattern[i]
+                        if c == '\\' and i < length - 1:
+                            i += 1
+                            if c in ('.', '[', ']', '{', '}', '(', ')', '|', '*', '+', '?'):
+                                # Escapes in regular expressions that aren't escaped in GBNF literals
+                                lit += c
+                            else:
+                                lit += f'\\{c}'
+                            i += 1
+                        else:
+                            lit += c
+                            i += 1
+                    if lit:
+                        seq.append((f'"{lit}"', True))
+
+                    if i < length and pattern[i] not in ('.', '(', ')', '|', '[', '{', '*', '+', '?'):
+                        seq.append((f'"{pattern[i]}"', True))
+                        i += 1
+            
+            return join_seq()
+        
+        return self._add_rule(name, transform()[0])
 
-            return self._add_rule(name, visit(re._parser.parse(pattern)))
-        except BaseException as e:
-            raise Exception(f'Error processing pattern: {pattern}: {e}') from e
 
     def _resolve_ref(self, ref):
         ref_name = ref.split('/')[-1]
@@ -392,8 +466,15 @@ def main(args_in = None):
     )
     parser.add_argument(
         '--allow-fetch',
+        action='store_true',
         default=False,
         help='Whether to allow fetching referenced schemas over HTTPS')
+    parser.add_argument(
+        '--dotall',
+        action='store_true',
+        default=False,
+        help='Whether to treat dot (".") as matching all chars including line breaks in regular expression patterns')
+    
     parser.add_argument('schema', help='file containing JSON schema ("-" for stdin)')
     args = parser.parse_args(args_in)
 
@@ -408,8 +489,10 @@ def main(args_in = None):
         url = f'file://{args.schema}'
         with open(args.schema) as f:
             schema = json.load(f)
-    prop_order = {name: idx for idx, name in enumerate(args.prop_order)}
-    converter = SchemaConverter(prop_order, args.allow_fetch)
+    converter = SchemaConverter(
+        prop_order={name: idx for idx, name in enumerate(args.prop_order)},
+        allow_fetch=args.allow_fetch,
+        dotall=args.dotall)
     schema = converter.resolve_refs(schema, url)
     converter.visit(schema, '')
     print(converter.format_grammar())
diff --git a/examples/regex-to-grammar.py b/examples/regex-to-grammar.py
index cec4fe01e078d..5671332e61879 100644
--- a/examples/regex-to-grammar.py
+++ b/examples/regex-to-grammar.py
@@ -1,7 +1,7 @@
 import json, subprocess, sys, os
 
-assert len(sys.argv) == 2
-[_, pattern] = sys.argv
+assert len(sys.argv) >= 2
+[_, pattern, *rest] = sys.argv
 
 print(subprocess.check_output(
   [
@@ -9,6 +9,7 @@
     os.path.join(
       os.path.dirname(os.path.realpath(__file__)),
       "json-schema-to-grammar.py"), 
+    *rest,
     "-",
   ],
   text=True,

From 11813a6b0a67f1d990b59d64cb84d84d2bdfd0f0 Mon Sep 17 00:00:00 2001
From: ochafik <ochafik@google.com>
Date: Mon, 11 Mar 2024 00:27:50 +0000
Subject: [PATCH 42/98] json: rm trailing spaces

---
 examples/json-schema-to-grammar.py            | 34 +++++++++----------
 examples/regex-to-grammar.py                  |  4 +--
 .../server/public/json-schema-to-grammar.mjs  |  2 +-
 examples/ts-type-to-grammar.sh                |  3 +-
 4 files changed, 21 insertions(+), 22 deletions(-)

diff --git a/examples/json-schema-to-grammar.py b/examples/json-schema-to-grammar.py
index a8ce11bdd2230..725bfd52c17d8 100755
--- a/examples/json-schema-to-grammar.py
+++ b/examples/json-schema-to-grammar.py
@@ -77,7 +77,7 @@ def visit(n: dict):
                     if ref.startswith('https://'):
                         assert self._allow_fetch, 'Fetching remote schemas is not allowed (use --allow-fetch for force)'
                         import requests
-                        
+
                         frag_split = ref.split('#')
                         base_url = frag_split[0]
 
@@ -94,16 +94,16 @@ def visit(n: dict):
                         n['$ref'] = ref
                     else:
                         raise ValueError(f'Unsupported ref {ref}')
-                    
+
                     for sel in ref.split('#')[-1].split('/')[1:]:
                         assert target is not None and sel in target, f'Error resolving ref {ref}: {sel} not in {target}'
                         target = target[sel]
-                    
+
                     self._refs[ref] = target
                 else:
                     for v in n.values():
                         visit(v)
-            
+
             return n
         return visit(schema)
 
@@ -220,7 +220,7 @@ def join_seq():
                         assert len(nums) == 2
                         min_times = int(nums[0]) if nums[0] else 0
                         max_times = int(nums[1]) if nums[1] else None
-                        
+
                     (sub, sub_is_literal) = seq[-1]
 
                     if min_times == 0 and max_times is None:
@@ -239,7 +239,7 @@ def join_seq():
 
                         seq[-1] = (
                             ' '.join(
-                                ([f'"{sub[1:-1] * min_times}"'] if sub_is_literal else [sub] * min_times) + 
+                                ([f'"{sub[1:-1] * min_times}"'] if sub_is_literal else [sub] * min_times) +
                                 ([f'{sub}?'] * (max_times - min_times) if max_times is not None else [f'{sub}*'])),
                             False
                         )
@@ -265,9 +265,9 @@ def join_seq():
                     if i < length and pattern[i] not in ('.', '(', ')', '|', '[', '{', '*', '+', '?'):
                         seq.append((f'"{pattern[i]}"', True))
                         i += 1
-            
+
             return join_seq()
-        
+
         return self._add_rule(name, transform()[0])
 
 
@@ -279,7 +279,7 @@ def _resolve_ref(self, ref):
             ref_name = self.visit(resolved, ref_name)
             self._refs_being_resolved.remove(ref)
         return ref_name
-    
+
     def visit(self, schema, name):
         schema_type = schema.get('type')
         rule_name = name or 'root'
@@ -289,7 +289,7 @@ def visit(self, schema, name):
 
         elif 'oneOf' in schema or 'anyOf' in schema:
             return self._add_rule(rule_name, self._generate_union_rule(name, schema.get('oneOf') or schema['anyOf']))
-        
+
         elif isinstance(schema_type, list):
             return self._add_rule(rule_name, self._generate_union_rule(name, [{'type': t} for t in schema_type]))
 
@@ -312,7 +312,7 @@ def visit(self, schema, name):
             def add_component(comp_schema, is_required):
                 if (ref := comp_schema.get('$ref')) is not None:
                     comp_schema = self._refs[ref]
-                
+
                 if 'properties' in comp_schema:
                     for prop_name, prop_schema in comp_schema['properties'].items():
                         properties.append((prop_name, prop_schema))
@@ -369,7 +369,7 @@ def add_component(comp_schema, is_required):
                 else:
                     rule = f'"[" space {item_rule_name} {successive_items} "]" space'
                 return self._add_rule(rule_name, rule)
-            
+
         elif schema_type in (None, 'string') and 'pattern' in schema:
             return self._visit_pattern(schema['pattern'], rule_name)
 
@@ -382,7 +382,7 @@ def add_component(comp_schema, is_required):
             for t, r in PRIMITIVE_RULES.items():
                 self._add_rule(t, r)
             return 'object'
-        
+
         else:
             assert schema_type in PRIMITIVE_RULES, f'Unrecognized schema: {schema}'
             # TODO: support minimum, maximum, exclusiveMinimum, exclusiveMaximum at least for zero
@@ -390,7 +390,7 @@ def add_component(comp_schema, is_required):
                 'root' if rule_name == 'root' else schema_type,
                 PRIMITIVE_RULES[schema_type]
             )
-    
+
     def _build_object_rule(self, properties: List[Tuple[str, Any]], required: Set[str], name: str):
         prop_order = self._prop_order
         # sort by position in prop_order (if specified) then by original order
@@ -406,9 +406,9 @@ def _build_object_rule(self, properties: List[Tuple[str, Any]], required: Set[st
 
         required_props = [k for k in sorted_props if k in required]
         optional_props = [k for k in sorted_props if k not in required]
-        
+
         rule = '"{" space '
-        rule += ' "," space '.join(prop_kv_rule_names[k] for k in required_props)            
+        rule += ' "," space '.join(prop_kv_rule_names[k] for k in required_props)
 
         if optional_props:
             rule += ' ('
@@ -474,7 +474,7 @@ def main(args_in = None):
         action='store_true',
         default=False,
         help='Whether to treat dot (".") as matching all chars including line breaks in regular expression patterns')
-    
+
     parser.add_argument('schema', help='file containing JSON schema ("-" for stdin)')
     args = parser.parse_args(args_in)
 
diff --git a/examples/regex-to-grammar.py b/examples/regex-to-grammar.py
index 5671332e61879..da2dfd1538348 100644
--- a/examples/regex-to-grammar.py
+++ b/examples/regex-to-grammar.py
@@ -8,7 +8,7 @@
     "python",
     os.path.join(
       os.path.dirname(os.path.realpath(__file__)),
-      "json-schema-to-grammar.py"), 
+      "json-schema-to-grammar.py"),
     *rest,
     "-",
   ],
@@ -16,4 +16,4 @@
   input=json.dumps({
     "type": "string",
     "pattern": pattern,
-  }, indent=2)))
\ No newline at end of file
+  }, indent=2)))
diff --git a/examples/server/public/json-schema-to-grammar.mjs b/examples/server/public/json-schema-to-grammar.mjs
index a6b5cad5649cb..3ca0c8fe1a143 100644
--- a/examples/server/public/json-schema-to-grammar.mjs
+++ b/examples/server/public/json-schema-to-grammar.mjs
@@ -377,4 +377,4 @@ function* groupBy(iterable, keyFn) {
   if (group.length > 0) {
     yield [lastKey, group];
   }
-}
\ No newline at end of file
+}
diff --git a/examples/ts-type-to-grammar.sh b/examples/ts-type-to-grammar.sh
index efdccfd633e03..77010082e470d 100755
--- a/examples/ts-type-to-grammar.sh
+++ b/examples/ts-type-to-grammar.sh
@@ -17,12 +17,11 @@ SCHEMA_FILE="$TMPDIR/schema.json"
 
 echo "export type MyType = $type" > "$DTS_FILE"
 
-
 # This is a fork of typescript-json-schema, actively maintained as of March 2024:
 # https://github.com/vega/ts-json-schema-generator
 npx ts-json-schema-generator --no-top-ref --path "$DTS_FILE" --type MyType -e none | tee "$SCHEMA_FILE" >&2
 
-# Not actively maintained:
+# Alternative, not actively maintained as of March 2024:
 # https://github.com/YousefED/typescript-json-schema
 # npx typescript-json-schema --defaultProps --required "$DTS_FILE" MyType | tee "$SCHEMA_FILE" >&2
 

From 53898204533b3fe17dd0b329c74960241792f635 Mon Sep 17 00:00:00 2001
From: ochafik <ochafik@google.com>
Date: Mon, 11 Mar 2024 01:47:22 +0000
Subject: [PATCH 43/98] Update json-schema-to-grammar.mjs

---
 .../server/public/json-schema-to-grammar.mjs  | 448 +++++++++++-------
 1 file changed, 284 insertions(+), 164 deletions(-)

diff --git a/examples/server/public/json-schema-to-grammar.mjs b/examples/server/public/json-schema-to-grammar.mjs
index 3ca0c8fe1a143..b03b3759a3580 100644
--- a/examples/server/public/json-schema-to-grammar.mjs
+++ b/examples/server/public/json-schema-to-grammar.mjs
@@ -1,4 +1,5 @@
-const SPACE_RULE = '" "*';
+// WARNING: This file was ported from json-schema-to-grammar.py, please fix bugs / add features there first.
+const SPACE_RULE = '" "?';
 
 const PRIMITIVE_RULES = {
   boolean: '("true" | "false") space',
@@ -15,177 +16,307 @@ const PRIMITIVE_RULES = {
 };
 
 const INVALID_RULE_CHARS_RE = /[^\dA-Za-z-]+/g;
-const GRAMMAR_LITERAL_ESCAPE_RE = /[\n\r]/g;
-const GRAMMAR_LITERAL_ESCAPES = { '\r': '\\r', '\n': '\\n' };
+const GRAMMAR_LITERAL_ESCAPE_RE = /[\n\r"]/g;
+const GRAMMAR_RANGE_LITERAL_ESCAPE_RE = /[\n\r"\]\-\\]/g;
+const GRAMMAR_LITERAL_ESCAPES = { '\r': '\\r', '\n': '\\n', '"': '\\"', '-': '\\-', ']': '\\]' };
+
+const NON_LITERAL_SET = new Set('|.()[]{}*+?');
+const ESCAPED_IN_REGEXPS_BUT_NOT_IN_LITERALS = new Set('{*+?');
 
 export class SchemaConverter {
-  constructor(propOrder) {
-    this._propOrder = propOrder || {};
-    this._rules = new Map();
-    this._rules.set('space', SPACE_RULE);
-    this.refBase = null;
+  constructor(options) {
+    this._propOrder = options.prop_order || {};
+    this._allowFetch = options.allow_fetch || false;
+    this._dotall = options.dotall || false;
+    this._rules = {'space': SPACE_RULE};
+    this._refs = {};
+    this._refsBeingResolved = new Set();
   }
 
   _formatLiteral(literal) {
-    const escaped = JSON.stringify(literal).slice(1, -1).replace(
+    const escaped = JSON.stringify(literal).replace(
       GRAMMAR_LITERAL_ESCAPE_RE,
       m => GRAMMAR_LITERAL_ESCAPES[m]
     );
     return `"${escaped}"`;
   }
 
+  _formatRangeChar(literal) {
+    return JSON.stringify(literal).slice(1, -1).replace(
+      GRAMMAR_RANGE_LITERAL_ESCAPE_RE,
+      m => GRAMMAR_LITERAL_ESCAPES[m]
+    );
+  }
+
   _addRule(name, rule) {
     let escName = name.replace(INVALID_RULE_CHARS_RE, '-');
     let key = escName;
 
-    if (this._rules.has(escName)) {
-      if (this._rules.get(escName) === rule) {
+    if (escName in this._rules) {
+      if (this._rules[escName] === rule) {
         return key;
       }
 
       let i = 0;
-      while (this._rules.has(`${escName}${i}`)) {
+      while ((`${escName}${i}` in this._rules) && (this._rules[`${escName}${i}`] !== rule)) {
         i += 1;
       }
       key = `${escName}${i}`;
     }
 
-    this._rules.set(key, rule);
+    this._rules[key] = rule;
     return key;
   }
 
-  _resolveRef(ref) {
-    // TODO: use https://github.com/APIDevTools/json-schema-ref-parser
-    try {
-      if (ref != null && ref.startsWith('#/')) {
-        let target = this.refBase;
-        let name = null;
-        for (const sel of ref.split('/').slice(1)) {
-          name = sel;
-          target = target[sel];
+  async resolveRefs(schema, url) {
+    const visit = async (n) => {
+      if (Array.isArray(n)) {
+        return Promise.all(n.map(visit));
+      } else if (typeof n === 'object' && n !== null) {
+        let ref = n.$ref;
+        let target;
+        if (ref !== undefined && !this._refs[ref]) {
+          if (ref.startsWith('https://')) {
+            if (!this._allowFetch) {
+              throw new Error('Fetching remote schemas is not allowed (use --allow-fetch for force)');
+            }
+            const fetch = (await import('node-fetch')).default;
+
+            const fragSplit = ref.split('#');
+            const baseUrl = fragSplit[0];
+
+            target = this._refs[baseUrl];
+            if (!target) {
+              target = await this.resolveRefs(await fetch(ref).then(res => res.json()), baseUrl);
+              this._refs[baseUrl] = target;
+            }
+
+            if (fragSplit.length === 1 || fragSplit[fragSplit.length - 1] === '') {
+              return;
+            }
+          } else if (ref.startsWith('#/')) {
+            target = schema;
+            ref = `${url}${ref}`;
+            n.$ref = ref;
+          } else {
+            throw new Error(`Unsupported ref ${ref}`);
+          }
+
+          const selectors = ref.split('#')[1].split('/').slice(1);
+          for (const sel of selectors) {
+            if (!target || !(sel in target)) {
+              throw new Error(`Error resolving ref ${ref}: ${sel} not in ${JSON.stringify(target)}`);
+            }
+            target = target[sel];
+          }
+
+          this._refs[ref] = target;
+        } else {
+          await Promise.all(Object.values(n).map(visit));
         }
-        return [name, target];
       }
-      return null;
-    } catch (e) {
-      throw new Error(`Error resolving ref ${ref}: ${e}`);
-    }
-  }
 
-  _generateUnionRule(name, altSchemas) {
-    return altSchemas.map((altSchema, i) =>
-      this.visit(altSchema, `${name}${name ? "-" : ""}${i}`)
-    ).join(' | ');
+      return n;
+    };
+
+    return visit(schema);
   }
 
-  _formatRangeChar(c) {
-    if (c === '-' || c === ']' || c === '\\') {
-      return '\\' + c;
-    } else if (c === '\n') {
-      return '\\n';
-    } else if (c === '\r') {
-      return '\\r';
-    } else if (c === '\t') {
-      return '\\t';
-    } else {
-      return c;
-    }
+  _generateUnionRule(name, altSchemas) {
+    return altSchemas
+      .map((altSchema, i) => this.visit(altSchema, `${name}${name ? '-' : ''}${i}`))
+      .join(' | ');
   }
 
-  _visitPattern(pattern) {
+  _visitPattern(pattern, name) {
     if (!pattern.startsWith('^') || !pattern.endsWith('$')) {
       throw new Error('Pattern must start with "^" and end with "$"');
     }
     pattern = pattern.slice(1, -1);
+    const subRuleIds = {};
+
+    let i = 0;
+    const length = pattern.length;
 
-    try {
-      const visitSeq = seq => {
-        const out = [];
-        for (const [t, g] of groupBy(seq, x => x[0])) {
-          const gList = Array.from(g);
-          // Merge consecutive literals
-          if (t === RegExp.LITERAL && gList.length > 1) {
-            out.push(this._formatLiteral(gList.map(x => String.fromCharCode(x[1])).join('')));
+    const getDot = () => {
+      let rule;
+      if (this._dotall) {
+        rule = '[\\U00000000-\\U0010FFFF]';
+      } else {
+        // Accept any character... except \n and \r line break chars (\x0A and \xOD)
+        rule = '[\\U00000000-\\x09\\x0B\\x0C\\x0E-\\U0010FFFF]';
+      }
+      return this._addRule('dot', rule);
+    };
+
+    const transform = () => {
+      const start = i;
+      // For each component of this sequence, store its string representation and whether it's a literal.
+      // We only need a flat structure here to apply repetition operators to the last item, and
+      // to merge literals at the and (we're parsing grouped ( sequences ) recursively and don't treat '|' specially
+      // (GBNF's syntax is luckily very close to regular expressions!)
+      const seq = [];
+
+      const joinSeq = () => {
+        const ret = [];
+        for (const [isLiteral, g] of groupBy(seq, x => x[1])) {
+          if (isLiteral) {
+            const lit = [...g].map(x => x[0].slice(1, -1)).join('');
+            ret.push([`"${lit}"`, true]);
           } else {
-            out.push(...gList.map(visit));
+            ret.push(...g);
           }
         }
-        if (out.length === 1) {
-          return out[0];
+        if (ret.length === 1) {
+          return ret[0];
         }
-        return '(' + out.join(' ') + ')';
+        return [ret.map(x => x[0]).join(' '), false];
       };
 
-      const visit = pattern => {
-        if (pattern[0] === RegExp.LITERAL) {
-          return JSON.stringify(String.fromCharCode(pattern[1]));
-        } else if (pattern[0] === RegExp.NOT_LITERAL) {
-          return `[^${this._formatRangeChar(String.fromCharCode(pattern[1]))}]`;
-        } else if (pattern[0] === RegExp.ANY) {
-          throw new Error('Unsupported pattern: "."');
-        } else if (pattern[0] === RegExp.IN) {
-          const formatRangeComp = c => {
-            if (c[0] === RegExp.LITERAL) {
-              return this._formatRangeChar(String.fromCharCode(c[1]));
-            } else if (c[0] === RegExp.RANGE) {
-              return `${this._formatRangeChar(String.fromCharCode(c[1][0]))}-${this._formatRangeChar(String.fromCharCode(c[1][1]))}`;
+      while (i < length) {
+        const c = pattern[i];
+        if (c === '.') {
+          seq.push([getDot(), false]);
+          i += 1;
+        } else if (c === '(') {
+          i += 1;
+          if (i < length) {
+            if (pattern[i] === '?') {
+              throw new Error(`Unsupported pattern syntax "${pattern[i]}" at index ${i} of /${pattern}/`);
+            }
+          }
+          seq.push([`(${transform()[0]})`, false]);
+        } else if (c === ')') {
+          i += 1;
+          if (start <= 0 || pattern[start - 1] !== '(') {
+            throw new Error(`Unbalanced parentheses; start = ${start}, i = ${i}, pattern = ${pattern}`);
+          }
+          return joinSeq();
+        } else if (c === '[') {
+          let squareBrackets = c;
+          i += 1;
+          while (i < length && pattern[i] !== ']') {
+            if (pattern[i] === '\\') {
+              squareBrackets += pattern.slice(i, i + 2);
+              i += 2;
             } else {
-              throw new Error(`Unrecognized pattern: ${JSON.stringify(c)}`);
+              squareBrackets += pattern[i];
+              i += 1;
             }
-          };
-          return `[${pattern[1].map(formatRangeComp).join('')}]`;
-        } else if (pattern[0] === RegExp.BRANCH) {
-          return '(' + pattern[1][1].map(visit).join(' | ') + ')';
-        } else if (pattern[0] === RegExp.SUBPATTERN) {
-          return '(' + visit(pattern[1][3]) + ')';
-        } else if (pattern[0] === RegExp.MAX_REPEAT) {
-          const [minTimes, maxTimes, sub] = pattern[1];
-          const subRule = visit(sub);
-
-          if (minTimes === 0 && maxTimes == null) {
-            return `${subRule}*`;
+          }
+          if (i >= length) {
+            throw new Error(`Unbalanced square brackets; start = ${start}, i = ${i}, pattern = ${pattern}`);
+          }
+          squareBrackets += ']';
+          i += 1;
+          seq.push([squareBrackets, false]);
+        } else if (c === '|') {
+          seq.push(['|', false]);
+          i += 1;
+        } else if (c === '*' || c === '+' || c === '?') {
+          seq[seq.length - 1] = [`${seq[seq.length - 1][0]}${c}`, false];
+          i += 1;
+        } else if (c === '{') {
+          let curlyBrackets = c;
+          i += 1;
+          while (i < length && pattern[i] !== '}') {
+            curlyBrackets += pattern[i];
+            i += 1;
+          }
+          if (i >= length) {
+            throw new Error(`Unbalanced curly brackets; start = ${start}, i = ${i}, pattern = ${pattern}`);
+          }
+          curlyBrackets += '}';
+          i += 1;
+          const nums = curlyBrackets.slice(1, -1).split(',').map(s => s.trim());
+          let minTimes, maxTimes;
+          if (nums.length === 1) {
+            minTimes = parseInt(nums[0], 10);
+            maxTimes = minTimes;
+          } else {
+            if (nums.length !== 2) {
+              throw new Error(`Invalid quantifier ${curlyBrackets}`);
+            }
+            minTimes = nums[0] ? parseInt(nums[0], 10) : 0;
+            maxTimes = nums[1] ? parseInt(nums[1], 10) : Infinity;
+          }
+
+          let [sub, subIsLiteral] = seq[seq.length - 1];
+
+          if (minTimes === 0 && maxTimes === Infinity) {
+            seq[seq.length - 1] = [`${sub}*`, false];
           } else if (minTimes === 0 && maxTimes === 1) {
-            return `${subRule}?`;
-          } else if (minTimes === 1 && maxTimes == null) {
-            return `${subRule}+`;
+            seq[seq.length - 1] = [`${sub}?`, false];
+          } else if (minTimes === 1 && maxTimes === Infinity) {
+            seq[seq.length - 1] = [`${sub}+`, false];
           } else {
-            return Array(minTimes).fill(subRule).concat(
-              maxTimes != null ? Array(maxTimes - minTimes).fill(`${subRule}?`) : [`${subRule}*`]
-            ).join(' ');
+            if (!subIsLiteral) {
+              let id = subRuleIds[sub];
+              if (id === undefined) {
+                id = this._addRule(`${name}-${Object.keys(subRuleIds).length + 1}`, sub);
+                subRuleIds[sub] = id;
+              }
+              sub = id;
+            }
+
+            const repeatedSub = Array.from({ length: minTimes }, () => subIsLiteral ? `"${sub.slice(1, -1).repeat(minTimes)}"` : sub);
+            const optionalSub = maxTimes !== undefined ? Array.from({ length: maxTimes - minTimes }, () => `${sub}?`) : [`${sub}*`];
+            seq[seq.length - 1] = [repeatedSub.concat(optionalSub).join(' '), false];
           }
-        } else if (pattern instanceof RegExp.SubPattern) {
-          return visitSeq(pattern.data);
-        } else if (Array.isArray(pattern)) {
-          return visitSeq(pattern);
         } else {
-          throw new Error(`Unrecognized pattern: ${JSON.stringify(pattern)} (${typeof pattern})`);
+          let lit = '';
+          while (i < length && !NON_LITERAL_SET.has(pattern[i]) &&
+                 !(i < length - 1 && ESCAPED_IN_REGEXPS_BUT_NOT_IN_LITERALS.has(pattern[i + 1]))) {
+            if (pattern[i] === '\\' && i < length - 1) {
+              i += 1;
+              if (NON_LITERAL_SET.has(pattern[i])) {
+                // Escapes in regular expressions that aren't escaped in GBNF literals
+                lit += pattern[i];
+              } else {
+                lit += `\\${pattern[i]}`;
+              }
+              i += 1;
+            } else {
+              lit += pattern[i];
+              i += 1;
+            }
+          }
+          if (lit) {
+            seq.push([`"${lit}"`, true]);
+          }
+
+          if (i < length && !NON_LITERAL_SET.has(pattern[i])) {
+            seq.push([`"${pattern[i]}"`, true]);
+            i += 1;
+          }
         }
-      };
+      }
 
-      return visit(RegExp.parse(pattern));
-    } catch (e) {
-      throw new Error(`Error processing pattern: ${pattern}: ${e}`);
-    }
+      return joinSeq();
+    };
+
+    return this._addRule(name, transform()[0]);
   }
 
-  visit(schema, name) {
-    const oldRefBase = this.refBase;
-    if ('definitions' in schema) {
-      this.refBase = schema;
-    }
-    try {
-      return this._visit(schema, name);
-    } finally {
-      this.refBase = oldRefBase;
+  _resolveRef(ref) {
+    let refName = ref.split('/').pop();
+    if (!(refName in this._rules) && !this._refsBeingResolved.has(ref)) {
+      this._refsBeingResolved.add(ref);
+      const resolved = this._refs[ref];
+      refName = this.visit(resolved, refName);
+      this._refsBeingResolved.delete(ref);
     }
+    return refName;
   }
 
-  _visit(schema, name) {
+  visit(schema, name) {
     const schemaType = schema.type;
-    const ref = schema.$ref;
     const ruleName = name || 'root';
 
-    if ('oneOf' in schema || 'anyOf' in schema) {
+    const ref = schema.$ref;
+    if (ref !== undefined) {
+      return this._resolveRef(ref);
+    } else if (schema.oneOf || schema.anyOf) {
       return this._addRule(ruleName, this._generateUnionRule(name, schema.oneOf || schema.anyOf));
     } else if (Array.isArray(schemaType)) {
       return this._addRule(ruleName, this._generateUnionRule(name, schemaType.map(t => ({ type: t }))));
@@ -194,20 +325,17 @@ export class SchemaConverter {
     } else if ('enum' in schema) {
       const rule = schema.enum.map(v => this._formatLiteral(v)).join(' | ');
       return this._addRule(ruleName, rule);
-    } else if ((schemaType == null || schemaType === 'object') && 'properties' in schema) {
+    } else if ((schemaType === undefined || schemaType === 'object') && 'properties' in schema) {
       const required = new Set(schema.required || []);
-      const { properties } = schema;
-      return this._addRule(ruleName, this._buildObjectRule(Object.entries(properties), required, name));
-    } else if (schemaType === 'object' && 'allOf' in schema) {
+      const properties = Object.entries(schema.properties);
+      return this._addRule(ruleName, this._buildObjectRule(properties, required, name));
+    } else if ((schemaType === undefined || schemaType === 'object') && 'allOf' in schema) {
       const required = new Set();
       const properties = [];
       const addComponent = (compSchema, isRequired) => {
-        const compRef = compSchema.$ref;
-        if (compRef != null) {
-          const resolved = this._resolveRef(compRef);
-          if (resolved != null) {
-            compSchema = resolved[1];
-          }
+        const ref = compSchema.$ref;
+        if (ref !== undefined) {
+          compSchema = this._refs[ref];
         }
 
         if ('properties' in compSchema) {
@@ -231,40 +359,34 @@ export class SchemaConverter {
       }
 
       return this._addRule(ruleName, this._buildObjectRule(properties, required, name));
-    } else if (schemaType === 'object' && 'additionalProperties' in schema) {
-      let additionalProperties = schema.additionalProperties;
-      if (typeof additionalProperties !== 'object') {
-        additionalProperties = {};
-      }
+    } else if ((schemaType === undefined || schemaType === 'object') && 'additionalProperties' in schema) {
+      const additionalProperties = typeof schema.additionalProperties === 'object' ? schema.additionalProperties : {};
 
-      const subName = `${name}${name ? "-" : ""}additionalProperties`;
+      const subName = `${name}${name ? '-' : ''}additionalProperties`;
       const valueRule = this.visit(additionalProperties, `${subName}-value`);
       const kvRule = this._addRule(`${subName}-kv`, `string ":" space ${valueRule}`);
-      return this._addRule(
-        ruleName,
-        `( ${kvRule} ( "," space ${kvRule} )* )*`
-      );
-    } else if (schemaType === 'array' && 'items' in schema) {
+      return this._addRule(ruleName, `( ${kvRule} ( "," space ${kvRule} )* )*`);
+    } else if ((schemaType === undefined || schemaType === 'array') && 'items' in schema) {
       // TODO `prefixItems` keyword
-      const { items } = schema;
+      const items = schema.items;
       if (Array.isArray(items)) {
         return this._addRule(
           ruleName,
           '"[" space ' +
-          items.map((item, i) => this.visit(item, `${name}-${i}`)).join(' "," space ') +
-          ' "]" space'
+            items.map((item, i) => this.visit(item, `${name}-${i}`)).join(' "," space ') +
+            ' "]" space'
         );
       } else {
-        const itemRuleName = this.visit(items, `${name}${name ? "-" : ""}item`);
+        const itemRuleName = this.visit(items, `${name}${name ? '-' : ''}item`);
         const listItemOperator = `( "," space ${itemRuleName} )`;
-        let successiveItems = "";
+        let successiveItems = '';
         const minItems = schema.minItems || 0;
         const maxItems = schema.maxItems;
         if (minItems > 0) {
           successiveItems = listItemOperator.repeat(minItems - 1);
         }
-        if (maxItems != null && maxItems > minItems) {
-          successiveItems += `${listItemOperator}?`.repeat(maxItems - minItems);
+        if (maxItems !== undefined && maxItems > minItems) {
+          successiveItems += `${listItemOperator}?`.repeat(maxItems - minItems - 1);
         } else {
           successiveItems += `${listItemOperator}*`;
         }
@@ -273,16 +395,12 @@ export class SchemaConverter {
           : `"[" space ${itemRuleName} ${successiveItems} "]" space`;
         return this._addRule(ruleName, rule);
       }
-    } else if ((schemaType == null || schemaType === 'string') && 'pattern' in schema) {
-      return this._addRule(ruleName, this._visitPattern(schema.pattern));
-    } else if ((resolved = this._resolveRef(ref)) != null) {
-      const [refName, definition] = resolved;
-      const defName = name ? `${name}-${refName}` : '';
-      return this.visit(definition, defName);
-    // } else if (ref != null && ref.startsWith('https://')) {
-    //   const refSchema = await fetch(ref).then(res => res.json());
-    //   return this.visit(refSchema, ref);
-    } else if ((schemaType === 'object' && Object.keys(schema).length === 1) || (schemaType == null && Object.keys(schema).length === 0)) {
+    } else if ((schemaType === undefined || schemaType === 'string') && 'pattern' in schema) {
+      return this._visitPattern(schema.pattern, ruleName);
+    } else if ((schemaType === undefined || schemaType === 'string') && /^uuid[1-5]?$/.test(schema.format || '')) {
+      return this._visitPattern('^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{12})$', 'uuid');
+    } else if (schemaType === 'object' && Object.keys(schema).length === 1 || schemaType === undefined && Object.keys(schema).length === 0) {
+      // This depends on all primitive types
       for (const [t, r] of Object.entries(PRIMITIVE_RULES)) {
         this._addRule(t, r);
       }
@@ -291,27 +409,28 @@ export class SchemaConverter {
       if (!(schemaType in PRIMITIVE_RULES)) {
         throw new Error(`Unrecognized schema: ${JSON.stringify(schema)}`);
       }
-      return this._addRule(
-        ruleName === 'root' ? 'root' : schemaType,
-        PRIMITIVE_RULES[schemaType]
-      );
+      // TODO: support minimum, maximum, exclusiveMinimum, exclusiveMaximum at least for zero
+      return this._addRule(ruleName === 'root' ? 'root' : schemaType, PRIMITIVE_RULES[schemaType]);
     }
   }
 
   _buildObjectRule(properties, required, name) {
-    // TODO: `required` keyword
     const propOrder = this._propOrder;
-    console.warn(`# properties: ${JSON.stringify(properties)}`);
     // sort by position in prop_order (if specified) then by original order
-    const sortedProps = properties.map(([name]) => name).sort(
-      (a, b) => (propOrder[a] ?? Infinity) - (propOrder[b] ?? Infinity)
-    );
+    const sortedProps = properties.map(([k]) => k).sort((a, b) => {
+      const orderA = propOrder[a] || Infinity;
+      const orderB = propOrder[b] || Infinity;
+      return orderA - orderB || properties.findIndex(([k]) => k === a) - properties.findIndex(([k]) => k === b);
+    });
+    // const sortedProps = properties.map(([name]) => name).sort(
+    //   (a, b) => (propOrder[a] ?? Infinity) - (propOrder[b] ?? Infinity)
+    // );
 
     const propKvRuleNames = {};
     for (const [propName, propSchema] of properties) {
-      const propRuleName = this.visit(propSchema, `${name}${name ? "-" : ""}${propName}`);
+      const propRuleName = this.visit(propSchema, `${name}${name ? '-' : ''}${propName}`);
       propKvRuleNames[propName] = this._addRule(
-        `${name}${name ? "-" : ""}${propName}-kv`,
+        `${name}${name ? '-' : ''}${propName}-kv`,
         `${this._formatLiteral(propName)} space ":" space ${propRuleName}`
       );
     }
@@ -334,19 +453,20 @@ export class SchemaConverter {
         let res = firstIsOptional ? `( "," space ${kvRuleName} )?` : kvRuleName;
         if (rest.length > 0) {
           res += ' ' + this._addRule(
-            `${name}${name ? "-" : ""}${k}-rest`,
+            `${name}${name ? '-' : ''}${k}-rest`,
             getRecursiveRefs(rest, true)
           );
         }
         return res;
       };
 
-      rule += Array.from({ length: optionalProps.length }, (_, i) => getRecursiveRefs(optionalProps.slice(i), false)).join(' | ') + ' ';
+      rule += optionalProps.map((_, i) => getRecursiveRefs(optionalProps.slice(i), false)).join(' | ');
       if (requiredProps.length > 0) {
         rule += ' ) ';
       }
       rule += ' )? ';
     }
+
     rule += ' "}" space ';
 
     return rule;
@@ -354,9 +474,9 @@ export class SchemaConverter {
 
   formatGrammar() {
     let grammar = '';
-    this._rules.forEach((rule, name) => {
+    for (const [name, rule] of Object.entries(this._rules)) {
       grammar += `${name} ::= ${rule}\n`;
-    });
+    }
     return grammar;
   }
 }

From 4e2d06c7416105806e66abdd693a4632c6acb9c8 Mon Sep 17 00:00:00 2001
From: ochafik <ochafik@google.com>
Date: Mon, 11 Mar 2024 01:51:26 +0000
Subject: [PATCH 44/98] json: updated server & chat `( cd examples/server &&
 ./deps.sh )`

---
 examples/server/chat.mjs                      |    5 +-
 examples/server/index.html.hpp                | 4532 +++++++++--------
 .../server/json-schema-to-grammar.mjs.hpp     | 1737 ++++++-
 examples/server/public/index.html             |   14 +-
 examples/server/public/index.js               |    2 +-
 5 files changed, 3756 insertions(+), 2534 deletions(-)

diff --git a/examples/server/chat.mjs b/examples/server/chat.mjs
index 219ebb51a1c9b..a79c8a3cd09c2 100644
--- a/examples/server/chat.mjs
+++ b/examples/server/chat.mjs
@@ -26,8 +26,9 @@ const propOrder = grammarJsonSchemaPropOrder
 
 let grammar = null
 if (grammarJsonSchemaFile) {
-    const schema = JSON.parse(readFileSync(grammarJsonSchemaFile, 'utf-8'))
-    const converter = new SchemaConverter(propOrder)
+    let schema = JSON.parse(readFileSync(grammarJsonSchemaFile, 'utf-8'))
+    const converter = new SchemaConverter({prop_order: propOrder, allow_fetch: true})
+    schema = await converter.resolveRefs(schema, grammarJsonSchemaFile)
     converter.visit(schema, '')
     grammar = converter.formatGrammar()
 }
diff --git a/examples/server/index.html.hpp b/examples/server/index.html.hpp
index 20551520e29cd..1ab57f549078d 100644
--- a/examples/server/index.html.hpp
+++ b/examples/server/index.html.hpp
@@ -417,2375 +417,2405 @@ unsigned char index_html[] = {
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-  0x20, 0x20, 0x20, 0x20, 0x63, 0x61, 0x63, 0x68, 0x65, 0x5f, 0x70, 0x72,
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 };
-unsigned int index_html_len = 33456;
+unsigned int index_html_len = 33809;
diff --git a/examples/server/json-schema-to-grammar.mjs.hpp b/examples/server/json-schema-to-grammar.mjs.hpp
index 0a05c369d77ba..1ae342b5f1415 100644
--- a/examples/server/json-schema-to-grammar.mjs.hpp
+++ b/examples/server/json-schema-to-grammar.mjs.hpp
@@ -1,144 +1,920 @@
 unsigned char json_schema_to_grammar_mjs[] = {
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+  0x3e, 0x20, 0x30, 0x29, 0x20, 0x7b, 0x0a, 0x20, 0x20, 0x20, 0x20, 0x79,
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+  0x20, 0x7d, 0x0a, 0x7d, 0x0a
 };
-unsigned int json_schema_to_grammar_mjs_len = 3695;
+unsigned int json_schema_to_grammar_mjs_len = 17957;
diff --git a/examples/server/public/index.html b/examples/server/public/index.html
index 84038ddcefb43..bbc5c2f68b2a2 100644
--- a/examples/server/public/index.html
+++ b/examples/server/public/index.html
@@ -630,14 +630,16 @@
 
       const grammarJsonSchemaPropOrder = signal('')
       const updateGrammarJsonSchemaPropOrder = (el) => grammarJsonSchemaPropOrder.value = el.target.value
-      const convertJSONSchemaGrammar = () => {
+      const convertJSONSchemaGrammar = async () => {
         try {
-          const schema = JSON.parse(params.value.grammar)
-          const converter = new SchemaConverter(
-            grammarJsonSchemaPropOrder.value
+          let schema = JSON.parse(params.value.grammar)
+          const converter = new SchemaConverter({
+            prop_order: grammarJsonSchemaPropOrder.value
               .split(',')
-              .reduce((acc, cur, i) => ({ ...acc, [cur.trim()]: i }), {})
-          )
+              .reduce((acc, cur, i) => ({ ...acc, [cur.trim()]: i }), {}),
+            allow_fetch: true,
+          })
+          schema = await converter.resolveRefs(schema, 'input')
           converter.visit(schema, '')
           params.value = {
             ...params.value,
diff --git a/examples/server/public/index.js b/examples/server/public/index.js
index 9db5a9d9faf29..1d53ced59c522 100644
--- a/examples/server/public/index.js
+++ b/examples/server/public/index.js
@@ -1 +1 @@
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From c8254e5f8afd507b6c45d50fade7aee42fca8d63 Mon Sep 17 00:00:00 2001
From: ochafik <ochafik@google.com>
Date: Mon, 11 Mar 2024 02:10:48 +0000
Subject: [PATCH 45/98] json: port fixes from mjs to python

---
 examples/json-schema-to-grammar.py | 17 +++++++++--------
 1 file changed, 9 insertions(+), 8 deletions(-)

diff --git a/examples/json-schema-to-grammar.py b/examples/json-schema-to-grammar.py
index 725bfd52c17d8..9a5d3083e1fc5 100755
--- a/examples/json-schema-to-grammar.py
+++ b/examples/json-schema-to-grammar.py
@@ -29,6 +29,8 @@
 GRAMMAR_RANGE_LITERAL_ESCAPE_RE = re.compile(r'[\r\n"\]\-\\]')
 GRAMMAR_LITERAL_ESCAPES = {'\r': '\\r', '\n': '\\n', '"': '\\"', '-': '\\-', ']': '\\]'}
 
+NON_LITERAL_SET = set('|.()[]{}*+?')
+ESCAPED_IN_REGEXPS_BUT_NOT_IN_LITERALS = set('{*+?')
 
 class SchemaConverter:
     def __init__(self, *, prop_order, allow_fetch, dotall):
@@ -245,19 +247,18 @@ def join_seq():
                         )
                 else:
                     lit = ''
-                    while i < length and pattern[i] not in ('.', '(', ')', '|', '[', '{', '*', '+', '?') \
-                            and not (i < length - 1 and pattern[i+1] in ('{', '*', '+', '?')):
-                        c = pattern[i]
-                        if c == '\\' and i < length - 1:
+                    while i < length and pattern[i] not in NON_LITERAL_SET \
+                            and not (i < length - 1 and pattern[i+1] in ESCAPED_IN_REGEXPS_BUT_NOT_IN_LITERALS):
+                        if pattern[i] == '\\' and i < length - 1:
                             i += 1
-                            if c in ('.', '[', ']', '{', '}', '(', ')', '|', '*', '+', '?'):
+                            if pattern[i] in NON_LITERAL_SET:
                                 # Escapes in regular expressions that aren't escaped in GBNF literals
-                                lit += c
+                                lit += pattern[i]
                             else:
-                                lit += f'\\{c}'
+                                lit += f'\\{pattern[i]}'
                             i += 1
                         else:
-                            lit += c
+                            lit += pattern[i]
                             i += 1
                     if lit:
                         seq.append((f'"{lit}"', True))

From 56b8744158cdeafdeb79249a6118aee8280e81be Mon Sep 17 00:00:00 2001
From: ochafik <ochafik@google.com>
Date: Mon, 11 Mar 2024 02:11:22 +0000
Subject: [PATCH 46/98] Update ts-type-to-grammar.sh

---
 examples/ts-type-to-grammar.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/examples/ts-type-to-grammar.sh b/examples/ts-type-to-grammar.sh
index 77010082e470d..eb571fbd2b73e 100755
--- a/examples/ts-type-to-grammar.sh
+++ b/examples/ts-type-to-grammar.sh
@@ -25,4 +25,4 @@ npx ts-json-schema-generator --no-top-ref --path "$DTS_FILE" --type MyType -e no
 # https://github.com/YousefED/typescript-json-schema
 # npx typescript-json-schema --defaultProps --required "$DTS_FILE" MyType | tee "$SCHEMA_FILE" >&2
 
-./examples/json-schema-to-grammar.py "$SCHEMA_FILE"
\ No newline at end of file
+./examples/json-schema-to-grammar.py "$SCHEMA_FILE"

From d736e928d2c59b8c4ac9a308c03a186c1cb98881 Mon Sep 17 00:00:00 2001
From: ochafik <ochafik@google.com>
Date: Mon, 11 Mar 2024 02:32:58 +0000
Subject: [PATCH 47/98] json: support prefixItems alongside array items

---
 examples/json-schema-to-grammar.py            |   7 +-
 .../server/json-schema-to-grammar.mjs.hpp     | 792 +++++++++---------
 .../server/public/json-schema-to-grammar.mjs  |   7 +-
 3 files changed, 405 insertions(+), 401 deletions(-)

diff --git a/examples/json-schema-to-grammar.py b/examples/json-schema-to-grammar.py
index 9a5d3083e1fc5..27ad2871fa7e5 100755
--- a/examples/json-schema-to-grammar.py
+++ b/examples/json-schema-to-grammar.py
@@ -341,15 +341,14 @@ def add_component(comp_schema, is_required):
                 rule_name,
                 f'( {kv_rule} ( "," space {kv_rule} )* )*')
 
-        elif schema_type in (None, 'array') and 'items' in schema:
-            # TODO `prefixItems` keyword
-            items = schema['items']
+        elif schema_type in (None, 'array') and ('items' in schema or 'prefixItems' in schema):
+            items = schema.get('items') or schema['prefixItems']
             if isinstance(items, list):
                 return self._add_rule(
                     rule_name,
                     '"[" space ' +
                     ' "," space '.join(
-                        self.visit(item, f'{name}-{i}')
+                        self.visit(item, f'{name}{"-" if name else ""}tuple-{i}')
                         for i, item in enumerate(items)) +
                     ' "]" space')
             else:
diff --git a/examples/server/json-schema-to-grammar.mjs.hpp b/examples/server/json-schema-to-grammar.mjs.hpp
index 1ae342b5f1415..24906da2a1f89 100644
--- a/examples/server/json-schema-to-grammar.mjs.hpp
+++ b/examples/server/json-schema-to-grammar.mjs.hpp
@@ -1091,410 +1091,416 @@ unsigned char json_schema_to_grammar_mjs[] = {
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+  0x28, 0x67, 0x72, 0x6f, 0x75, 0x70, 0x2e, 0x6c, 0x65, 0x6e, 0x67, 0x74,
+  0x68, 0x20, 0x3e, 0x20, 0x30, 0x29, 0x20, 0x7b, 0x0a, 0x20, 0x20, 0x20,
+  0x20, 0x79, 0x69, 0x65, 0x6c, 0x64, 0x20, 0x5b, 0x6c, 0x61, 0x73, 0x74,
+  0x4b, 0x65, 0x79, 0x2c, 0x20, 0x67, 0x72, 0x6f, 0x75, 0x70, 0x5d, 0x3b,
+  0x0a, 0x20, 0x20, 0x7d, 0x0a, 0x7d, 0x0a
 };
-unsigned int json_schema_to_grammar_mjs_len = 17957;
+unsigned int json_schema_to_grammar_mjs_len = 18031;
diff --git a/examples/server/public/json-schema-to-grammar.mjs b/examples/server/public/json-schema-to-grammar.mjs
index b03b3759a3580..ed3beb26a436b 100644
--- a/examples/server/public/json-schema-to-grammar.mjs
+++ b/examples/server/public/json-schema-to-grammar.mjs
@@ -366,14 +366,13 @@ export class SchemaConverter {
       const valueRule = this.visit(additionalProperties, `${subName}-value`);
       const kvRule = this._addRule(`${subName}-kv`, `string ":" space ${valueRule}`);
       return this._addRule(ruleName, `( ${kvRule} ( "," space ${kvRule} )* )*`);
-    } else if ((schemaType === undefined || schemaType === 'array') && 'items' in schema) {
-      // TODO `prefixItems` keyword
-      const items = schema.items;
+    } else if ((schemaType === undefined || schemaType === 'array') && ('items' in schema || 'prefixItems' in schema)) {
+      const items = schema.items ?? schema.prefixItems;
       if (Array.isArray(items)) {
         return this._addRule(
           ruleName,
           '"[" space ' +
-            items.map((item, i) => this.visit(item, `${name}-${i}`)).join(' "," space ') +
+            items.map((item, i) => this.visit(item, `${name}${name ? '-' : ''}tuple-${i}`)).join(' "," space ') +
             ' "]" space'
         );
       } else {

From 9a61802a2868f5a83fd618a3d08e1655ca5b7e67 Mon Sep 17 00:00:00 2001
From: ochafik <ochafik@google.com>
Date: Mon, 11 Mar 2024 02:58:14 +0000
Subject: [PATCH 48/98] json: add date format + fix uuid

---
 examples/json-schema-to-grammar.py            |    8 +-
 .../server/json-schema-to-grammar.mjs.hpp     | 1359 +++++++++--------
 .../server/public/json-schema-to-grammar.mjs  |    8 +-
 3 files changed, 707 insertions(+), 668 deletions(-)

diff --git a/examples/json-schema-to-grammar.py b/examples/json-schema-to-grammar.py
index 27ad2871fa7e5..d7680e16bd580 100755
--- a/examples/json-schema-to-grammar.py
+++ b/examples/json-schema-to-grammar.py
@@ -258,6 +258,8 @@ def join_seq():
                                 lit += f'\\{pattern[i]}'
                             i += 1
                         else:
+                            if pattern[i] == '"':
+                                lit += '\\'
                             lit += pattern[i]
                             i += 1
                     if lit:
@@ -375,7 +377,11 @@ def add_component(comp_schema, is_required):
 
         # TODO: support string formats "uri", "date", "date-time"
         elif schema_type in (None, 'string') and re.match(r'^uuid[1-5]?$', schema.get('format', '')):
-            return self._visit_pattern('^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{12})$', 'uuid')
+            return self._visit_pattern('^"[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{12}"$', 'uuid')
+        
+        elif schema_type in (None, 'string') and schema.get('format') == 'date':
+            # Adapted from full-date at https://www.rfc-editor.org/rfc/rfc3339.txt
+            return self._visit_pattern('^"[0-9]{4}-(0[1-9]|1[0-2])-([0-2][0-9]|3[0-1])"$', 'date')
 
         elif schema_type == 'object' and len(schema) == 1 or schema_type is None and len(schema) == 0:
             # This depends on all primitive types
diff --git a/examples/server/json-schema-to-grammar.mjs.hpp b/examples/server/json-schema-to-grammar.mjs.hpp
index 24906da2a1f89..b118b18c29349 100644
--- a/examples/server/json-schema-to-grammar.mjs.hpp
+++ b/examples/server/json-schema-to-grammar.mjs.hpp
@@ -813,694 +813,721 @@ unsigned char json_schema_to_grammar_mjs[] = {
   0x20, 0x31, 0x3b, 0x0a, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
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-  0x74, 0x74, 0x65, 0x72, 0x6e, 0x5b, 0x69, 0x5d, 0x3b, 0x0a, 0x20, 0x20,
+  0x20, 0x20, 0x20, 0x69, 0x66, 0x20, 0x28, 0x70, 0x61, 0x74, 0x74, 0x65,
+  0x72, 0x6e, 0x5b, 0x69, 0x5d, 0x20, 0x3d, 0x3d, 0x3d, 0x20, 0x27, 0x22,
+  0x27, 0x29, 0x20, 0x7b, 0x0a, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+  0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x6c,
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+  0x20, 0x7b, 0x0a, 0x20, 0x20, 0x20, 0x20, 0x63, 0x6f, 0x6e, 0x73, 0x74,
+  0x20, 0x6b, 0x65, 0x79, 0x20, 0x3d, 0x20, 0x6b, 0x65, 0x79, 0x46, 0x6e,
+  0x28, 0x65, 0x6c, 0x65, 0x6d, 0x65, 0x6e, 0x74, 0x29, 0x3b, 0x0a, 0x20,
+  0x20, 0x20, 0x20, 0x69, 0x66, 0x20, 0x28, 0x6c, 0x61, 0x73, 0x74, 0x4b,
+  0x65, 0x79, 0x20, 0x21, 0x3d, 0x3d, 0x20, 0x6e, 0x75, 0x6c, 0x6c, 0x20,
+  0x26, 0x26, 0x20, 0x6b, 0x65, 0x79, 0x20, 0x21, 0x3d, 0x3d, 0x20, 0x6c,
+  0x61, 0x73, 0x74, 0x4b, 0x65, 0x79, 0x29, 0x20, 0x7b, 0x0a, 0x20, 0x20,
+  0x20, 0x20, 0x20, 0x20, 0x79, 0x69, 0x65, 0x6c, 0x64, 0x20, 0x5b, 0x6c,
+  0x61, 0x73, 0x74, 0x4b, 0x65, 0x79, 0x2c, 0x20, 0x67, 0x72, 0x6f, 0x75,
+  0x70, 0x5d, 0x3b, 0x0a, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x67, 0x72,
+  0x6f, 0x75, 0x70, 0x20, 0x3d, 0x20, 0x5b, 0x5d, 0x3b, 0x0a, 0x20, 0x20,
+  0x20, 0x20, 0x7d, 0x0a, 0x20, 0x20, 0x20, 0x20, 0x67, 0x72, 0x6f, 0x75,
+  0x70, 0x2e, 0x70, 0x75, 0x73, 0x68, 0x28, 0x65, 0x6c, 0x65, 0x6d, 0x65,
+  0x6e, 0x74, 0x29, 0x3b, 0x0a, 0x20, 0x20, 0x20, 0x20, 0x6c, 0x61, 0x73,
+  0x74, 0x4b, 0x65, 0x79, 0x20, 0x3d, 0x20, 0x6b, 0x65, 0x79, 0x3b, 0x0a,
+  0x20, 0x20, 0x7d, 0x0a, 0x20, 0x20, 0x69, 0x66, 0x20, 0x28, 0x67, 0x72,
+  0x6f, 0x75, 0x70, 0x2e, 0x6c, 0x65, 0x6e, 0x67, 0x74, 0x68, 0x20, 0x3e,
+  0x20, 0x30, 0x29, 0x20, 0x7b, 0x0a, 0x20, 0x20, 0x20, 0x20, 0x79, 0x69,
+  0x65, 0x6c, 0x64, 0x20, 0x5b, 0x6c, 0x61, 0x73, 0x74, 0x4b, 0x65, 0x79,
+  0x2c, 0x20, 0x67, 0x72, 0x6f, 0x75, 0x70, 0x5d, 0x3b, 0x0a, 0x20, 0x20,
+  0x7d, 0x0a, 0x7d, 0x0a
 };
-unsigned int json_schema_to_grammar_mjs_len = 18031;
+unsigned int json_schema_to_grammar_mjs_len = 18352;
diff --git a/examples/server/public/json-schema-to-grammar.mjs b/examples/server/public/json-schema-to-grammar.mjs
index ed3beb26a436b..d68e4b6d82d16 100644
--- a/examples/server/public/json-schema-to-grammar.mjs
+++ b/examples/server/public/json-schema-to-grammar.mjs
@@ -277,6 +277,9 @@ export class SchemaConverter {
               }
               i += 1;
             } else {
+              if (pattern[i] === '"') {
+                  lit += '\\';
+              }
               lit += pattern[i];
               i += 1;
             }
@@ -397,7 +400,10 @@ export class SchemaConverter {
     } else if ((schemaType === undefined || schemaType === 'string') && 'pattern' in schema) {
       return this._visitPattern(schema.pattern, ruleName);
     } else if ((schemaType === undefined || schemaType === 'string') && /^uuid[1-5]?$/.test(schema.format || '')) {
-      return this._visitPattern('^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{12})$', 'uuid');
+      return this._visitPattern('^"[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{12}"$', 'uuid');
+    } else if ((schemaType === undefined || schemaType === 'string') && schema.format === 'date') {
+      // Adapted from full-date at https://www.rfc-editor.org/rfc/rfc3339.txt
+      return this._visitPattern('^"[0-9]{4}-(0[1-9]|1[0-2])-([0-2][0-9]|3[0-1])"$', 'date')
     } else if (schemaType === 'object' && Object.keys(schema).length === 1 || schemaType === undefined && Object.keys(schema).length === 0) {
       // This depends on all primitive types
       for (const [t, r] of Object.entries(PRIMITIVE_RULES)) {

From e1ed7a04d69cc7345549492487703dadd374a37d Mon Sep 17 00:00:00 2001
From: ochafik <ochafik@google.com>
Date: Mon, 11 Mar 2024 04:03:05 +0000
Subject: [PATCH 49/98] json: add date, time, date-time formats

---
 examples/json-schema-to-grammar.py            |   34 +-
 .../server/json-schema-to-grammar.mjs.hpp     | 2900 +++++++++--------
 .../server/public/json-schema-to-grammar.mjs  |   24 +-
 3 files changed, 1523 insertions(+), 1435 deletions(-)

diff --git a/examples/json-schema-to-grammar.py b/examples/json-schema-to-grammar.py
index d7680e16bd580..3461e7d9dc537 100755
--- a/examples/json-schema-to-grammar.py
+++ b/examples/json-schema-to-grammar.py
@@ -17,6 +17,7 @@
     'value'  : 'object | array | string | number | boolean',
     'object' : '"{" space ( string ":" space value ("," space string ":" space value)* )? "}" space',
     'array'  : '"[" space ( value ("," space value)* )? "]" space',
+    'uuid'   : '"\\""' + ' "-" '.join('[0-9a-fA-F]' * n for n in [8, 4, 4, 4, 12]) + '"\\"" space',
     'string': r''' "\"" (
         [^"\\] |
         "\\" (["\\/bfnrt] | "u" [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F])
@@ -24,6 +25,16 @@
     'null': '"null" space',
 }
 
+# TODO: support "uri", "email" string formats
+DATE_RULES = {
+    'date'   : '[0-9] [0-9] [0-9] [0-9] "-" ( "0" [1-9] | "1" [0-2] ) "-" ( [0-2] [0-9] | "3" [0-1] )',
+    'time'   : '([01] [0-9] | "2" [0-3]) ":" [0-5] [0-9] ":" [0-5] [0-9] ( "." [0-9] [0-9] [0-9] )? ( "Z" | ( "+" | "-" ) ( [01] [0-9] | "2" [0-3] ) ":" [0-5] [0-9] )',
+    'date-time': 'date "T" time',
+    'date-string': '"\\"" date "\\"" space',
+    'time-string': '"\\"" time "\\"" space',
+    'date-time-string': '"\\"" date-time "\\"" space',
+}
+
 INVALID_RULE_CHARS_RE = re.compile(r'[^a-zA-Z0-9-]+')
 GRAMMAR_LITERAL_ESCAPE_RE = re.compile(r'[\r\n"]')
 GRAMMAR_RANGE_LITERAL_ESCAPE_RE = re.compile(r'[\r\n"\]\-\\]')
@@ -32,6 +43,9 @@
 NON_LITERAL_SET = set('|.()[]{}*+?')
 ESCAPED_IN_REGEXPS_BUT_NOT_IN_LITERALS = set('{*+?')
 
+DATE_PATTERN = '[0-9]{4}-(0[1-9]|1[0-2])-([0-2][0-9]|3[0-1])'
+TIME_PATTERN = '([01][0-9]|2[0-3])(:[0-5][0-9]){2}(\\.[0-9]{1,3})?(Z|[+-](([01][0-9]|2[0-3]):[0-5][0-9]))' # Cap millisecond precision w/ 3 digits
+
 class SchemaConverter:
     def __init__(self, *, prop_order, allow_fetch, dotall):
         self._prop_order = prop_order
@@ -285,6 +299,7 @@ def _resolve_ref(self, ref):
 
     def visit(self, schema, name):
         schema_type = schema.get('type')
+        schema_format = schema.get('format')
         rule_name = name or 'root'
 
         if (ref := schema.get('$ref')) is not None:
@@ -375,20 +390,23 @@ def add_component(comp_schema, is_required):
         elif schema_type in (None, 'string') and 'pattern' in schema:
             return self._visit_pattern(schema['pattern'], rule_name)
 
-        # TODO: support string formats "uri", "date", "date-time"
-        elif schema_type in (None, 'string') and re.match(r'^uuid[1-5]?$', schema.get('format', '')):
-            return self._visit_pattern('^"[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{12}"$', 'uuid')
-        
-        elif schema_type in (None, 'string') and schema.get('format') == 'date':
-            # Adapted from full-date at https://www.rfc-editor.org/rfc/rfc3339.txt
-            return self._visit_pattern('^"[0-9]{4}-(0[1-9]|1[0-2])-([0-2][0-9]|3[0-1])"$', 'date')
-
         elif schema_type == 'object' and len(schema) == 1 or schema_type is None and len(schema) == 0:
             # This depends on all primitive types
             for t, r in PRIMITIVE_RULES.items():
                 self._add_rule(t, r)
             return 'object'
 
+        elif schema_type in (None, 'string') and re.match(r'^uuid[1-5]?$', schema_format or ''):
+            return self._add_rule(
+                'root' if rule_name == 'root' else schema_format,
+                PRIMITIVE_RULES['uuid']
+            )
+
+        elif schema_type in (None, 'string') and schema_format in DATE_RULES:
+            for t, r in DATE_RULES.items():
+                self._add_rule(t, r)
+            return schema_format + '-string'
+
         else:
             assert schema_type in PRIMITIVE_RULES, f'Unrecognized schema: {schema}'
             # TODO: support minimum, maximum, exclusiveMinimum, exclusiveMaximum at least for zero
diff --git a/examples/server/json-schema-to-grammar.mjs.hpp b/examples/server/json-schema-to-grammar.mjs.hpp
index b118b18c29349..e5e69c2054989 100644
--- a/examples/server/json-schema-to-grammar.mjs.hpp
+++ b/examples/server/json-schema-to-grammar.mjs.hpp
@@ -45,1489 +45,1543 @@ unsigned char json_schema_to_grammar_mjs[] = {
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-  0x0a, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x22, 0x5c, 0x5c,
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+  0x72, 0x6f, 0x75, 0x70, 0x2e, 0x70, 0x75, 0x73, 0x68, 0x28, 0x65, 0x6c,
+  0x65, 0x6d, 0x65, 0x6e, 0x74, 0x29, 0x3b, 0x0a, 0x20, 0x20, 0x20, 0x20,
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+  0x79, 0x3b, 0x0a, 0x20, 0x20, 0x7d, 0x0a, 0x20, 0x20, 0x69, 0x66, 0x20,
+  0x28, 0x67, 0x72, 0x6f, 0x75, 0x70, 0x2e, 0x6c, 0x65, 0x6e, 0x67, 0x74,
+  0x68, 0x20, 0x3e, 0x20, 0x30, 0x29, 0x20, 0x7b, 0x0a, 0x20, 0x20, 0x20,
+  0x20, 0x79, 0x69, 0x65, 0x6c, 0x64, 0x20, 0x5b, 0x6c, 0x61, 0x73, 0x74,
+  0x4b, 0x65, 0x79, 0x2c, 0x20, 0x67, 0x72, 0x6f, 0x75, 0x70, 0x5d, 0x3b,
+  0x0a, 0x20, 0x20, 0x7d, 0x0a, 0x7d, 0x0a
 };
-unsigned int json_schema_to_grammar_mjs_len = 18352;
+unsigned int json_schema_to_grammar_mjs_len = 19003;
diff --git a/examples/server/public/json-schema-to-grammar.mjs b/examples/server/public/json-schema-to-grammar.mjs
index d68e4b6d82d16..05fb8c5e94629 100644
--- a/examples/server/public/json-schema-to-grammar.mjs
+++ b/examples/server/public/json-schema-to-grammar.mjs
@@ -8,6 +8,7 @@ const PRIMITIVE_RULES = {
   value: 'object | array | string | number | boolean',
   object: '"{" space ( string ":" space value ("," space string ":" space value)* )? "}" space',
   array: '"[" space ( value ("," space value)* )? "]" space',
+  uuid: '"\\""' + [8, 4, 4, 4, 12].map(n => [...new Array(n)].map(_ => '[0-9a-fA-F]').join('')).join(' "-" ') + '"\\"" space',
   string: ` "\\"" (
         [^"\\\\] |
         "\\\\" (["\\\\/bfnrt] | "u" [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F])
@@ -15,6 +16,16 @@ const PRIMITIVE_RULES = {
   null: '"null" space',
 };
 
+// TODO: support "uri", "email" string formats
+const DATE_RULES = {
+    'date'   : '[0-9] [0-9] [0-9] [0-9] "-" ( "0" [1-9] | "1" [0-2] ) "-" ( [0-2] [0-9] | "3" [0-1] )',
+    'time'   : '([01] [0-9] | "2" [0-3]) ":" [0-5] [0-9] ":" [0-5] [0-9] ( "." [0-9] [0-9] [0-9] )? ( "Z" | ( "+" | "-" ) ( [01] [0-9] | "2" [0-3] ) ":" [0-5] [0-9] )',
+    'date-time': 'date "T" time',
+    'date-string': '"\\"" date "\\"" space',
+    'time-string': '"\\"" time "\\"" space',
+    'date-time-string': '"\\"" date-time "\\"" space',
+};
+
 const INVALID_RULE_CHARS_RE = /[^\dA-Za-z-]+/g;
 const GRAMMAR_LITERAL_ESCAPE_RE = /[\n\r"]/g;
 const GRAMMAR_RANGE_LITERAL_ESCAPE_RE = /[\n\r"\]\-\\]/g;
@@ -314,6 +325,7 @@ export class SchemaConverter {
 
   visit(schema, name) {
     const schemaType = schema.type;
+    const schemaFormat = schema.format;
     const ruleName = name || 'root';
 
     const ref = schema.$ref;
@@ -400,10 +412,14 @@ export class SchemaConverter {
     } else if ((schemaType === undefined || schemaType === 'string') && 'pattern' in schema) {
       return this._visitPattern(schema.pattern, ruleName);
     } else if ((schemaType === undefined || schemaType === 'string') && /^uuid[1-5]?$/.test(schema.format || '')) {
-      return this._visitPattern('^"[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{12}"$', 'uuid');
-    } else if ((schemaType === undefined || schemaType === 'string') && schema.format === 'date') {
-      // Adapted from full-date at https://www.rfc-editor.org/rfc/rfc3339.txt
-      return this._visitPattern('^"[0-9]{4}-(0[1-9]|1[0-2])-([0-2][0-9]|3[0-1])"$', 'date')
+      return this._addRule(
+          ruleName === 'root' ? 'root' : schemaFormat,
+          PRIMITIVE_RULES['uuid'])
+    } else if ((schemaType === undefined || schemaType === 'string') && schema.format in DATE_RULES) {
+      for (const [t, r] of Object.entries(DATE_RULES)) {
+        this._addRule(t, r);
+      }
+      return schemaFormat + '-string';
     } else if (schemaType === 'object' && Object.keys(schema).length === 1 || schemaType === undefined && Object.keys(schema).length === 0) {
       // This depends on all primitive types
       for (const [t, r] of Object.entries(PRIMITIVE_RULES)) {

From b816734c1769e499394acf7365735d80c95a3600 Mon Sep 17 00:00:00 2001
From: Olivier Chafik <ochafik@google.com>
Date: Mon, 11 Mar 2024 11:48:08 +0000
Subject: [PATCH 50/98] json: preserve order of props from TS defs

---
 examples/ts-type-to-grammar.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/examples/ts-type-to-grammar.sh b/examples/ts-type-to-grammar.sh
index eb571fbd2b73e..db4881f261821 100755
--- a/examples/ts-type-to-grammar.sh
+++ b/examples/ts-type-to-grammar.sh
@@ -19,7 +19,7 @@ echo "export type MyType = $type" > "$DTS_FILE"
 
 # This is a fork of typescript-json-schema, actively maintained as of March 2024:
 # https://github.com/vega/ts-json-schema-generator
-npx ts-json-schema-generator --no-top-ref --path "$DTS_FILE" --type MyType -e none | tee "$SCHEMA_FILE" >&2
+npx ts-json-schema-generator --unstable --no-top-ref --path "$DTS_FILE" --type MyType -e none | tee "$SCHEMA_FILE" >&2
 
 # Alternative, not actively maintained as of March 2024:
 # https://github.com/YousefED/typescript-json-schema

From d0dd75c902d772f72d831e351f063b7b67110ade Mon Sep 17 00:00:00 2001
From: Olivier Chafik <ochafik@google.com>
Date: Mon, 11 Mar 2024 22:19:26 +0000
Subject: [PATCH 51/98] json: port schema converter to C++, wire in ./server

---
 Makefile                                   |   4 +-
 common/CMakeLists.txt                      |   2 +
 examples/server/CMakeLists.txt             |   9 +-
 examples/server/json-schema-to-grammar.cpp | 681 +++++++++++++++++++++
 examples/server/json-schema-to-grammar.h   |   4 +
 examples/server/server.cpp                 |   9 +-
 examples/server/utils.hpp                  |  10 +-
 7 files changed, 714 insertions(+), 5 deletions(-)
 create mode 100644 examples/server/json-schema-to-grammar.cpp
 create mode 100644 examples/server/json-schema-to-grammar.h

diff --git a/Makefile b/Makefile
index d809b8b3bbfc1..c2d6c58e0e79e 100644
--- a/Makefile
+++ b/Makefile
@@ -99,7 +99,7 @@ endif
 # keep standard at C11 and C++11
 MK_CPPFLAGS  = -I. -Icommon
 MK_CFLAGS    = -std=c11   -fPIC
-MK_CXXFLAGS  = -std=c++11 -fPIC
+MK_CXXFLAGS  = -std=c++17 -fPIC
 MK_NVCCFLAGS = -std=c++11
 
 # -Ofast tends to produce faster code, but may not be available for some compilers.
@@ -728,7 +728,7 @@ save-load-state: examples/save-load-state/save-load-state.cpp ggml.o llama.o $(C
 	$(CXX) $(CXXFLAGS) -c $< -o $(call GET_OBJ_FILE, $<)
 	$(CXX) $(CXXFLAGS) $(filter-out %.h $<,$^) $(call GET_OBJ_FILE, $<) -o $@ $(LDFLAGS)
 
-server: examples/server/server.cpp examples/server/utils.hpp examples/server/httplib.h examples/server/json.hpp examples/server/index.html.hpp examples/server/index.js.hpp examples/server/completion.js.hpp common/stb_image.h ggml.o llama.o $(COMMON_DEPS) grammar-parser.o $(OBJS)
+server: examples/server/server.cpp examples/server/utils.hpp examples/server/httplib.h examples/server/json.hpp examples/server/index.html.hpp examples/server/index.js.hpp examples/server/completion.js.hpp examples/server/json-schema-to-grammar.cpp examples/server/json-schema-to-grammar.h common/stb_image.h ggml.o llama.o $(COMMON_DEPS) grammar-parser.o $(OBJS)
 	$(CXX) $(CXXFLAGS) -c $< -o $(call GET_OBJ_FILE, $<)
 	$(CXX) $(CXXFLAGS) $(filter-out %.h %.hpp $<,$^) -Iexamples/server $(call GET_OBJ_FILE, $<) -o $@ $(LDFLAGS) $(LWINSOCK2)
 
diff --git a/common/CMakeLists.txt b/common/CMakeLists.txt
index 350bbdf7f7b1b..9fc0a78050310 100644
--- a/common/CMakeLists.txt
+++ b/common/CMakeLists.txt
@@ -60,6 +60,8 @@ add_library(${TARGET} STATIC
     console.cpp
     grammar-parser.h
     grammar-parser.cpp
+    json-schema-to-grammar.h
+    json-schema-to-grammar.cpp
     train.h
     train.cpp
     )
diff --git a/examples/server/CMakeLists.txt b/examples/server/CMakeLists.txt
index f94de1e99b7e9..1d42790b81a6a 100644
--- a/examples/server/CMakeLists.txt
+++ b/examples/server/CMakeLists.txt
@@ -2,7 +2,14 @@ set(TARGET server)
 option(LLAMA_SERVER_VERBOSE "Build verbose logging option for Server" ON)
 option(LLAMA_SERVER_SSL "Build SSL support for the server" OFF)
 include_directories(${CMAKE_CURRENT_SOURCE_DIR})
-add_executable(${TARGET} server.cpp utils.hpp json.hpp httplib.h)
+add_executable(${TARGET}
+    server.cpp
+    utils.hpp
+    json.hpp
+    httplib.h 
+    json-schema-to-grammar.cpp
+    json-schema-to-grammar.h
+)
 install(TARGETS ${TARGET} RUNTIME)
 target_compile_definitions(${TARGET} PRIVATE
     SERVER_VERBOSE=$<BOOL:${LLAMA_SERVER_VERBOSE}>
diff --git a/examples/server/json-schema-to-grammar.cpp b/examples/server/json-schema-to-grammar.cpp
new file mode 100644
index 0000000000000..264a32fa3fa28
--- /dev/null
+++ b/examples/server/json-schema-to-grammar.cpp
@@ -0,0 +1,681 @@
+#include "json-schema-to-grammar.h"
+#include <string>
+#include <vector>
+#include <unordered_map>
+#include <unordered_set>
+#include <iostream>
+#include <regex>
+#include <algorithm>
+#include <sstream>
+#include <fstream>
+
+using json = nlohmann::json;
+using namespace std;
+
+const string SPACE_RULE = "\" \"?";
+
+unordered_map<string, string> PRIMITIVE_RULES = {
+    {"boolean", "(\"true\" | \"false\") space"},
+    {"number", "(\"-\"? ([0-9] | [1-9] [0-9]*)) (\".\" [0-9]+)? ([eE] [-+]? [0-9]+)? space"},
+    {"integer", "(\"-\"? ([0-9] | [1-9] [0-9]*)) space"},
+    {"value", "object | array | string | number | boolean"},
+    {"object", "\"{\" space ( string \":\" space value (\",\" space string \":\" space value)* )? \"}\" space"},
+    {"array", "\"[\" space ( value (\",\" space value)* )? \"]\" space"},
+    {"uuid", "\"\\\"\" \"-\" \"-\" \"-\" \"-\" \"\\\"\" space"},
+    {"string", "\"\\\"\" ([^\"\\\\] | \"\\\\\" ([\"\\\\/bfnrt] | \"u\" [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F]))* \"\\\"\" space"},
+    {"null", "\"null\" space"}
+};
+
+unordered_map<string, string> DATE_RULES = {
+    {"date", "[0-9] [0-9] [0-9] [0-9] \"-\" ( \"0\" [1-9] | \"1\" [0-2] ) \"-\" ( [0-2] [0-9] | \"3\" [0-1] )"},
+    {"time", "([01] [0-9] | \"2\" [0-3]) \":\" [0-5] [0-9] \":\" [0-5] [0-9] ( \".\" [0-9] [0-9] [0-9] )? ( \"Z\" | ( \"+\" | \"-\" ) ( [01] [0-9] | \"2\" [0-3] ) \":\" [0-5] [0-9] )"},
+    {"date-time", "date \"T\" time"},
+    {"date-string", "\"\\\"\" date \"\\\"\" space"},
+    {"time-string", "\"\\\"\" time \"\\\"\" space"},
+    {"date-time-string", "\"\\\"\" date-time \"\\\"\" space"}
+};
+
+regex INVALID_RULE_CHARS_RE("[^a-zA-Z0-9-]+");
+regex GRAMMAR_LITERAL_ESCAPE_RE("[\r\n\"]");
+regex GRAMMAR_RANGE_LITERAL_ESCAPE_RE("[\r\n\"\\]\\-\\\\]");
+unordered_map<char, string> GRAMMAR_LITERAL_ESCAPES = {
+    {'\r', "\\r"}, {'\n', "\\n"}, {'"', "\\\""}, {'-', "\\-"}, {']', "\\]"}
+};
+
+unordered_set<char> NON_LITERAL_SET = {'|', '.', '(', ')', '[', ']', '{', '}', '*', '+', '?'};
+unordered_set<char> ESCAPED_IN_REGEXPS_BUT_NOT_IN_LITERALS = {'{', '*', '+', '?'};
+
+template <typename Iterator>
+string join(Iterator begin, Iterator end, const string& separator) {
+    ostringstream result;
+    if (begin != end) {
+        result << *begin;
+        for (Iterator it = begin + 1; it != end; ++it) {
+            result << separator << *it;
+        }
+    }
+    return result.str();
+}
+
+static std::vector<std::string> split(const std::string& str, const std::string& delimiter) {
+    std::vector<std::string> tokens;
+    size_t start = 0;
+    size_t end = str.find(delimiter);
+    
+    while (end != std::string::npos) {
+        tokens.push_back(str.substr(start, end - start));
+        start = end + delimiter.length();
+        end = str.find(delimiter, start);
+    }
+    
+    tokens.push_back(str.substr(start));
+    
+    return tokens;
+}
+
+static string repeat(const string& str, size_t n) {
+    if (n == 0) {
+        return "";
+    }
+    
+    string result;
+    result.reserve(str.length() * n);
+    
+    for (size_t i = 0; i < n; ++i) {
+        result += str;
+    }
+    
+    return result;
+}
+
+static string _format_literal(const string& literal) {
+    string escaped = json(literal).dump();
+    smatch match;
+    while (regex_search(escaped, match, GRAMMAR_LITERAL_ESCAPE_RE)) {
+        char c = match.str()[0];
+        escaped.replace(match.position(), 1, GRAMMAR_LITERAL_ESCAPES.at(c));
+    }
+    return "\"" + escaped + "\"";
+}
+
+static string _format_range_char(const string& literal) {
+    string escaped = literal.substr(1, literal.length() - 2);
+    smatch match;
+    while (regex_search(escaped, match, GRAMMAR_RANGE_LITERAL_ESCAPE_RE)) {
+        char c = match.str()[0];
+        escaped.replace(match.position(), 1, GRAMMAR_LITERAL_ESCAPES.at(c));
+    }
+    return escaped;
+}
+
+
+class SchemaConverter {
+private:
+    unordered_map<string, int> _prop_order;
+    std::optional<std::function<json(const string&)>> _fetch_json;
+    bool _dotall;
+    unordered_map<string, string> _rules;
+    unordered_map<string, nlohmann::json> _refs;
+    unordered_set<string> _refs_being_resolved;
+    vector<string> _errors;
+    vector<string> _warnings;
+    
+    string _add_rule(const string& name, const string& rule) {
+        string esc_name = regex_replace(name, INVALID_RULE_CHARS_RE, "-");
+        if (_rules.find(esc_name) == _rules.end() || _rules[esc_name] == rule) {
+            _rules[esc_name] = rule;
+            return esc_name;
+        } else {
+            int i = 0;
+            while (_rules.find(esc_name + to_string(i)) != _rules.end() && _rules[esc_name + to_string(i)] != rule) {
+                i++;
+            }
+            string key = esc_name + to_string(i);
+            _rules[key] = rule;
+            return key;
+        }
+    }
+
+    string _generate_union_rule(const string& name, const vector<json>& alt_schemas) {
+        vector<string> rules;
+        for (size_t i = 0; i < alt_schemas.size(); i++) {
+            rules.push_back(visit(alt_schemas[i], name + (name.empty() ? "" : "-") + to_string(i)));
+        }
+        return join(rules.begin(), rules.end(), " | ");
+    }
+
+    string _visit_pattern(const string& pattern, const string& name) {
+        if (!(pattern.front() == '^' && pattern.back() == '$')) {
+          _errors.push_back("Pattern must start with '^' and end with '$'");
+          return "";
+        }
+        string sub_pattern = pattern.substr(1, pattern.length() - 2);
+        unordered_map<string, string> sub_rule_ids;
+
+        size_t i = 0;
+        size_t length = sub_pattern.length();
+
+        std::function<pair<string, bool>()> transform = [&]() -> pair<string, bool> {
+            size_t start = i;
+            vector<pair<string, bool>> seq;
+
+            auto get_dot = [&]() {
+                string rule;
+                if (_dotall) {
+                    rule = "[\\U00000000-\\U0010FFFF]";
+                } else {
+                    rule = "[\\U00000000-\\x09\\x0B\\x0C\\x0E-\\U0010FFFF]";
+                }
+                return _add_rule("dot", rule);
+            };
+
+            // Joins the sequence, merging consecutive literals together.
+            auto join_seq = [&]() {
+                vector<string> results;
+
+                string literal;
+                auto flush_literal = [&]() {
+                  if (literal.empty()) {
+                    return false;
+                  }
+                  results.push_back("\"" + literal + "\"");
+                  literal.clear();
+                  return true;
+                };
+
+                for (const auto& item : seq) {
+                    if (item.second) {
+                      literal += item.first.substr(1, item.first.length() - 2);
+                    } else {
+                      flush_literal();
+                      results.push_back(item.first);
+                    }
+                }
+                if (flush_literal() && results.size() == 1) {
+                    return make_pair(results[0], true);
+                }
+                return make_pair(join(results.begin(), results.end(), " "), false);
+            };
+
+            while (i < length) {
+                char c = sub_pattern[i];
+                if (c == '.') {
+                    seq.push_back(make_pair(get_dot(), false));
+                    i++;
+                } else if (c == '(') {
+                    i++;
+                    if (i < length) {
+                        if (sub_pattern[i] == '?') {
+                            _warnings.push_back("Unsupported pattern syntax");
+                        }
+                    }
+                    auto sub_result = transform();
+                    seq.push_back(make_pair("(" + sub_result.first + ")", false));
+                } else if (c == ')') {
+                    i++;
+                    if (start > 0 && sub_pattern[start - 1] != '(') {
+                      _errors.push_back("Unbalanced parentheses");
+                    }
+                    return join_seq();
+                } else if (c == '[') {
+                    string square_brackets = string(1, c);
+                    i++;
+                    while (i < length && sub_pattern[i] != ']') {
+                        if (sub_pattern[i] == '\\') {
+                            square_brackets += sub_pattern.substr(i, 2);
+                            i += 2;
+                        } else {
+                            square_brackets += sub_pattern[i];
+                            i++;
+                        }
+                    }
+                    if (i >= length) {
+                      _errors.push_back("Unbalanced square brackets");
+                    }
+                    square_brackets += ']';
+                    i++;
+                    seq.push_back(make_pair(square_brackets, false));
+                } else if (c == '|') {
+                    seq.push_back(make_pair("|", false));
+                    i++;
+                } else if (c == '*' || c == '+' || c == '?') {
+                    seq.back().first += c;
+                    i++;
+                } else if (c == '{') {
+                    string curly_brackets = string(1, c);
+                    i++;
+                    while (i < length && sub_pattern[i] != '}') {
+                        curly_brackets += sub_pattern[i];
+                        i++;
+                    }
+                    if (i >= length) {
+                      _errors.push_back("Unbalanced curly brackets");
+                    }
+                    curly_brackets += '}';
+                    i++;
+                    auto nums = split(curly_brackets.substr(1, curly_brackets.length() - 2), ",");
+                    int min_times = 0;
+                    int max_times = numeric_limits<int>::max();
+                    if (nums.size() == 1) {
+                        min_times = max_times = stoi(nums[0]);
+                    } else if (nums.size() != 2) {
+                        _errors.push_back("Wrong number of values in curly brackets");
+                    } else {
+                        if (!nums[0].empty()) {
+                            min_times = stoi(nums[0]);
+                        }
+                        if (!nums[1].empty()) {
+                            max_times = stoi(nums[1]);
+                        }
+                    }
+                    auto [sub, sub_is_literal] = seq.back();
+                    if (min_times == 0 && max_times == numeric_limits<int>::max()) {
+                        seq.back().first = sub + "*";
+                    } else if (min_times == 0 && max_times == 1) {
+                        seq.back().first = sub + "?";
+                    } else if (min_times == 1 && max_times == numeric_limits<int>::max()) {
+                        seq.back().first = sub + "+";
+                    } else {
+                        if (!sub_is_literal) {
+                            string sub_id = sub_rule_ids[sub];
+                            if (sub_id.empty()) {
+                                sub_id = _add_rule(name + "-" + to_string(sub_rule_ids.size() + 1), sub);
+                                sub_rule_ids[sub] = sub_id;
+                            }
+                            sub = sub_id;
+                        }
+                        string result;
+                        for (int j = 0; j < min_times; j++) {
+                            if (sub_is_literal) {
+                                result += "\"" + repeat(sub.substr(1, sub.length() - 2), min_times) + "\"";
+                            } else {
+                                result += sub + " ";
+                            }
+                        }
+                        if (max_times == numeric_limits<int>::max()) {
+                            result += sub + "*";
+                        } else {
+                            for (int j = min_times; j < max_times; j++) {
+                                result += sub + "? ";
+                            }
+                        }
+                        seq.back().first = result;
+                        seq.back().second = false;
+                    }
+                } else {
+                    string literal;
+                    while (i < length && NON_LITERAL_SET.find(sub_pattern[i]) == NON_LITERAL_SET.end() &&
+                          (i == length - 1 || ESCAPED_IN_REGEXPS_BUT_NOT_IN_LITERALS.find(sub_pattern[i + 1]) == ESCAPED_IN_REGEXPS_BUT_NOT_IN_LITERALS.end())) {
+                        if (sub_pattern[i] == '\\' && i < length - 1) {
+                            i++;
+                            if (NON_LITERAL_SET.find(sub_pattern[i]) != NON_LITERAL_SET.end()) {
+                                literal += sub_pattern[i];
+                            } else {
+                                literal += "\\" + string(1, sub_pattern[i]);
+                            }
+                            i++;
+                        } else {
+                            if (sub_pattern[i] == '"') {
+                                literal += "\\";
+                            }
+                            literal += sub_pattern[i];
+                            i++;
+                        }
+                    }
+                    if (!literal.empty()) {
+                        seq.push_back(make_pair("\"" + literal + "\"", true));
+                    }
+                    if (i < length && NON_LITERAL_SET.find(sub_pattern[i]) == NON_LITERAL_SET.end()) {
+                        seq.push_back(make_pair("\"" + string(1, sub_pattern[i]) + "\"", true));
+                        i++;
+                    }
+                }
+            }
+            return join_seq();
+        };
+        return _add_rule(name, transform().first);
+    }
+
+    string _resolve_ref(const string& ref) {
+        string ref_name = ref.substr(ref.find_last_of('/') + 1);
+        if (_rules.find(ref_name) == _rules.end() && _refs_being_resolved.find(ref) == _refs_being_resolved.end()) {
+            _refs_being_resolved.insert(ref);
+            json resolved = _refs[ref];
+            ref_name = visit(resolved, ref_name);
+            _refs_being_resolved.erase(ref);
+        }
+        return ref_name;
+    }
+
+    string _build_object_rule(const vector<pair<string, json>>& properties, const unordered_set<string>& required, const string& name) {
+        unordered_map<string, int> prop_order = _prop_order;
+        vector<string> sorted_props;
+        for (size_t i = 0; i < properties.size(); i++) {
+            const auto& prop = properties[i];
+            int order = (prop_order.find(prop.first) != prop_order.end()) ? prop_order[prop.first] : (int)prop_order.size();
+            sorted_props.push_back(prop.first);
+            for (size_t j = sorted_props.size() - 1; j > 0; j--) {
+                if (order < ((prop_order.find(sorted_props[j - 1]) != prop_order.end()) ? prop_order[sorted_props[j - 1]] : (int)prop_order.size())) {
+                    swap(sorted_props[j], sorted_props[j - 1]);
+                } else {
+                    break;
+                }
+            }
+        }
+
+        unordered_map<string, string> prop_kv_rule_names;
+        for (const auto& [prop_name, prop_schema] : properties) {
+            string prop_rule_name = visit(prop_schema, name + (name.empty() ? "" : "-") + prop_name);
+            prop_kv_rule_names[prop_name] = _add_rule(
+                name + (name.empty() ? "" : "-") + prop_name + "-kv",
+                _format_literal(prop_name) + " space \":\" space " + prop_rule_name
+            );
+        }
+
+        vector<string> required_props;
+        vector<string> optional_props;
+        for (const auto& prop : sorted_props) {
+            if (required.find(prop) != required.end()) {
+                required_props.push_back(prop);
+            } else {
+                optional_props.push_back(prop);
+            }
+        }
+
+        string rule = "\"{\" space ";
+        for (size_t i = 0; i < required_props.size(); i++) {
+            if (i > 0) {
+                rule += " \",\" space ";
+            }
+            rule += prop_kv_rule_names[required_props[i]];
+        }
+
+        if (!optional_props.empty()) {
+            rule += " (";
+            if (!required_props.empty()) {
+                rule += " \",\" space ( ";
+            }
+
+            function<string(const vector<string>&, bool)> get_recursive_refs = [&](const vector<string>& ks, bool first_is_optional) {
+                string res;
+                if (ks.empty()) {
+                    return res;
+                }
+                string k = ks[0];
+                string kv_rule_name = prop_kv_rule_names[k];
+                if (first_is_optional) {
+                    res = "( \",\" space " + kv_rule_name + " )?";
+                } else {
+                    res = kv_rule_name;
+                }
+                if (ks.size() > 1) {
+                    res += " " + _add_rule(
+                        name + (name.empty() ? "" : "-") + k + "-rest",
+                        get_recursive_refs(vector<string>(ks.begin() + 1, ks.end()), true)
+                    );
+                }
+                return res;
+            };
+
+            for (size_t i = 0; i < optional_props.size(); i++) {
+                if (i > 0) {
+                    rule += " | ";
+                }
+                rule += get_recursive_refs(vector<string>(optional_props.begin() + i, optional_props.end()), false);
+            }
+            rule += " ";
+
+            if (!required_props.empty()) {
+                rule += " ) ";
+            }
+            rule += " )? ";
+        }
+
+        rule += " \"}\" space ";
+
+        return rule;
+    }
+
+public:
+    SchemaConverter(
+        const unordered_map<std::string, int>& prop_order,
+        const std::optional<std::function<json(const string&)>>& fetch_json,
+        bool dotall)
+          : _prop_order(prop_order), _fetch_json(fetch_json), _dotall(dotall)
+    {
+        _rules["space"] = SPACE_RULE;
+    }
+
+    json resolve_refs(nlohmann::json& schema, const std::string& url) {
+        /*
+        * Resolves all $ref fields in the given schema, fetching any remote schemas,
+        * replacing $ref with absolute reference URL and populating _refs with the
+        * respective referenced (sub)schema dictionaries.
+        */
+        function<json(json&)> visit_refs = [&](json& n) {
+            if (n.is_array()) {
+                for (auto& x : n) {
+                    x = visit_refs(x);
+                }
+            } else if (n.is_object()) {
+                if (n.contains("$ref")) {
+                    string ref = n["$ref"];
+                    if (_refs.find(ref) == _refs.end()) {
+                        json target;
+                        if (ref.find("https://") == 0 && _fetch_json) {
+                            string base_url = ref.substr(0, ref.find('#'));
+                            auto it = _refs.find(base_url);
+                            if (it != _refs.end()) {
+                                target = it->second;
+                            } else {
+                                // Fetch the referenced schema and resolve its refs
+                                auto referenced = _fetch_json.value()(ref);
+                                target = resolve_refs(referenced, base_url);
+                                _refs[base_url] = target;
+                            }
+                            if (ref.find('#') == string::npos || ref.substr(ref.find('#') + 1).empty()) {
+                                return target;
+                            }
+                        } else if (ref.find("#/") == 0) {
+                            target = schema;
+                            n["$ref"] = url + ref;
+                            ref = url + ref;
+                        } else {
+                            _errors.push_back("Unsupported ref: " + ref);
+                            return n;
+                        }
+                        string pointer = ref.substr(ref.find('#') + 1);
+                        vector<string> tokens = split(pointer, "/");
+                        for (size_t i = 1; i < tokens.size(); ++i) {
+                            string sel = tokens[i];
+                            if (target.is_null() || !target.contains(sel)) {
+                              _errors.push_back("Error resolving ref " + ref + ": " + sel + " not in " + target.dump());
+                              return n;
+                            }
+                            target = target[sel];
+                        }
+                        _refs[ref] = target;
+                    }
+                } else {
+                    for (auto& [key, value] : n.items()) {
+                        visit_refs(value);
+                    }
+                }
+            }
+            return n;
+        };
+
+        return visit_refs(schema);
+    }
+
+    string visit(const json& schema, const string& name) {
+        json schema_type = schema.contains("type") ? schema["type"] : json();
+        string schema_format = schema.contains("format") ? schema["format"].get<string>() : "";
+        string rule_name = name.empty() ? "root" : name;
+
+        if (schema.contains("$ref")) {
+            return _resolve_ref(schema["$ref"]);
+        } else if (schema.contains("oneOf") || schema.contains("anyOf")) {
+            vector<json> alt_schemas = schema.contains("oneOf") ? schema["oneOf"].get<vector<json>>() : schema["anyOf"].get<vector<json>>();
+            return _add_rule(rule_name, _generate_union_rule(name, alt_schemas));
+        } else if (schema_type.is_array()) {
+            vector<json> schema_types;
+            for (const auto& t : schema_type) {
+                schema_types.push_back({{"type", t}});
+            }
+            return _add_rule(rule_name, _generate_union_rule(name, schema_types));
+        } else if (schema.contains("const")) {
+            return _add_rule(rule_name, _format_literal(schema["const"].dump()));
+        } else if (schema.contains("enum")) {
+            vector<string> enum_values;
+            for (const auto& v : schema["enum"]) {
+                enum_values.push_back(_format_literal(v.dump()));
+            }
+            return _add_rule(rule_name, join(enum_values.begin(), enum_values.end(), " | "));
+        } else if ((schema_type.is_null() || schema_type == "object") && schema.contains("properties")) {
+            unordered_set<string> required;
+            if (schema.contains("required") && schema["required"].is_array()) {
+                for (const auto& item : schema["required"]) {
+                    if (item.is_string()) {
+                        required.insert(item.get<string>());
+                    }
+                }
+            }
+            vector<pair<string, json>> properties;
+            for (const auto& prop : schema["properties"].items()) {
+                properties.emplace_back(prop.key(), prop.value());
+            }
+            return _add_rule(rule_name, _build_object_rule(properties, required, name));
+        } else if ((schema_type.is_null() || schema_type == "object") && schema.contains("allOf")) {
+            unordered_set<string> required;
+            vector<pair<string, json>> properties;
+            string hybrid_name = name;
+            std::function<void(const json&, bool)> add_component = [&](const json& comp_schema, bool is_required) {
+                if (comp_schema.contains("$ref")) {
+                    add_component(_refs[comp_schema["$ref"]], is_required);
+                } else if (comp_schema.contains("properties")) {
+                    for (const auto& prop : comp_schema["properties"].items()) {
+                        properties.emplace_back(prop.key(), prop.value());
+                        if (is_required) {
+                            required.insert(prop.key());
+                        }
+                    }
+                } else {
+                  // todo warning
+                }
+            };
+            for (auto& t : schema["allOf"]) {
+                if (t.contains("anyOf")) {
+                    for (auto& tt : t["anyOf"]) {
+                        add_component(tt, false);
+                    }
+                } else {
+                    add_component(t, true);
+                }
+            }
+            return _add_rule(rule_name, _build_object_rule(properties, required, hybrid_name));
+        } else if ((schema_type.is_null() || schema_type == "object") && schema.contains("additionalProperties")) {
+            json additional_properties = schema["additionalProperties"];
+            if (!additional_properties.is_object()) {
+                additional_properties = json::object();
+            }
+            string sub_name = name + (name.empty() ? "" : "-") + "additionalProperties";
+            string value_rule = visit(additional_properties, sub_name + "-value");
+            string kv_rule = _add_rule(sub_name + "-kv", "string \":\" space " + value_rule);
+            return _add_rule(rule_name, "( " + kv_rule + " ( \",\" space " + kv_rule + " )* )*");
+        } else if ((schema_type.is_null() || schema_type == "array") && (schema.contains("items") || schema.contains("prefixItems"))) {
+            json items = schema.contains("items") ? schema["items"] : schema["prefixItems"];
+            if (items.is_array()) {
+                string rule = "\"[\" space ";
+                for (size_t i = 0; i < items.size(); i++) {
+                    if (i > 0) {
+                        rule += " \",\" space ";
+                    }
+                    rule += visit(items[i], name + (name.empty() ? "" : "-") + "tuple-" + to_string(i));
+                }
+                rule += " \"]\" space";
+                return _add_rule(rule_name, rule);
+            } else {
+                string item_rule_name = visit(items, name + (name.empty() ? "" : "-") + "item");
+                string list_item_operator = "( \",\" space " + item_rule_name + " )";
+                string successive_items;
+                int min_items = schema.contains("minItems") ? schema["minItems"].get<int>() : 0;
+                json max_items_json = schema.contains("maxItems") ? schema["maxItems"] : json();
+                int max_items = max_items_json.is_number_integer() ? max_items_json.get<int>() : -1;
+                if (min_items > 0) {
+                    successive_items = list_item_operator;
+                    for (int i = 1; i < min_items; i++) {
+                        successive_items += list_item_operator;
+                    }
+                    min_items--;
+                }
+                if (max_items >= 0 && max_items > min_items) {
+                    for (int i = min_items; i < max_items - 1; i++) {
+                        successive_items += (list_item_operator + "?");
+                    }
+                } else {
+                    successive_items += list_item_operator + "*";
+                }
+                string rule;
+                if (min_items == 0) {
+                    rule = "\"[\" space ( " + item_rule_name + " " + successive_items + " )? \"]\" space";
+                } else {
+                    rule = "\"[\" space " + item_rule_name + " " + successive_items + " \"]\" space";
+                }
+                return _add_rule(rule_name, rule);
+            }
+        } else if ((schema_type.is_null() || schema_type == "string") && schema.contains("pattern")) {
+            return _visit_pattern(schema["pattern"], rule_name);
+        } else if ((schema_type == "object" || schema_type.is_null()) && (schema.size() == 1 || schema.empty())) {
+            for (const auto& [t, r] : PRIMITIVE_RULES) {
+                _add_rule(t, r);
+            }
+            return "object";
+        } else if ((schema_type.is_null() || schema_type == "string") && regex_match(schema_format, regex("^uuid[1-5]?$"))) {
+            return _add_rule(rule_name == "root" ? "root" : schema_format, PRIMITIVE_RULES.at("uuid"));
+        } else if ((schema_type.is_null() || schema_type == "string") && DATE_RULES.find(schema_format) != DATE_RULES.end()) {
+            for (const auto& [t, r] : DATE_RULES) {
+                _add_rule(t, r);
+            }
+            return schema_format + "-string";
+        } else {
+            if (PRIMITIVE_RULES.find(schema_type.get<string>()) == PRIMITIVE_RULES.end()) {
+              _errors.push_back("Unrecognized schema: " + schema.dump());
+              return "";
+            }
+            // TODO: support minimum, maximum, exclusiveMinimum, exclusiveMaximum at least for zero
+            return _add_rule(rule_name == "root" ? "root" : schema_type.get<string>(), PRIMITIVE_RULES.at(schema_type.get<string>()));
+        }
+    }
+
+    void check_errors() {
+      if (!_errors.empty()) {
+        throw std::runtime_error("JSON schema conversion failed:\n" + join(_errors.begin(), _errors.end(), "\n"));
+      }
+      if (!_warnings.empty()) {
+        std::cerr << "WARNING: JSON schema conversion was incomplete: " + join(_warnings.begin(), _warnings.end(), "; ") << std::endl;
+      }
+    }
+
+    string format_grammar() {
+        stringstream ss;
+        for (const auto& [name, rule] : _rules) {
+            ss << name << " ::= " << rule << endl;
+        }
+        return ss.str();
+    }
+};
+
+
+string json_schema_to_grammar(const json& schema) {
+  unordered_map<string, int> prop_order;
+  auto dotall = false;
+  string url("input");
+
+  SchemaConverter converter(prop_order, /* fetch_json= */ std::nullopt, dotall);
+  auto copy = schema;
+  copy = converter.resolve_refs(copy, url);
+  converter.visit(copy, "");
+  converter.check_errors();
+  return converter.format_grammar();
+}
diff --git a/examples/server/json-schema-to-grammar.h b/examples/server/json-schema-to-grammar.h
new file mode 100644
index 0000000000000..2e4c6ade3e7b2
--- /dev/null
+++ b/examples/server/json-schema-to-grammar.h
@@ -0,0 +1,4 @@
+#pragma once
+#include "json.hpp"
+
+std::string json_schema_to_grammar(const nlohmann::json& schema);
diff --git a/examples/server/server.cpp b/examples/server/server.cpp
index c7d3ed01b6347..f45e9630a40f1 100644
--- a/examples/server/server.cpp
+++ b/examples/server/server.cpp
@@ -1,6 +1,7 @@
 #include "utils.hpp"
 
 #include "common.h"
+#include "json-schema-to-grammar.h"
 #include "llama.h"
 #include "grammar-parser.h"
 
@@ -178,6 +179,7 @@ struct server_slot {
     llama_token sampled;
     struct llama_sampling_params sparams;
     llama_sampling_context * ctx_sampling = nullptr;
+    json json_schema;
 
     int32_t ga_i = 0;   // group-attention state
     int32_t ga_n = 1;   // group-attention factor
@@ -838,7 +840,12 @@ struct server_context {
         slot.sparams.penalize_nl       = json_value(data, "penalize_nl",       default_sparams.penalize_nl);
         slot.params.n_keep             = json_value(data, "n_keep",            slot.params.n_keep);
         slot.params.seed               = json_value(data, "seed",              default_params.seed);
-        slot.sparams.grammar           = json_value(data, "grammar",           default_sparams.grammar);
+        if (data.contains("json_schema") && !data.contains("grammar")) {
+            auto schema                = json_value(data, "json_schema",       json::object());
+            slot.sparams.grammar       = json_schema_to_grammar(schema);
+        } else {
+            slot.sparams.grammar       = json_value(data, "grammar",           default_sparams.grammar);
+        }
         slot.sparams.n_probs           = json_value(data, "n_probs",           default_sparams.n_probs);
         slot.sparams.min_keep          = json_value(data, "min_keep",          default_sparams.min_keep);
 
diff --git a/examples/server/utils.hpp b/examples/server/utils.hpp
index df0a27782e646..2aeb9ce0229e3 100644
--- a/examples/server/utils.hpp
+++ b/examples/server/utils.hpp
@@ -361,10 +361,18 @@ static json oaicompat_completion_params_parse(
     llama_params["ignore_eos"]        = json_value(body,   "ignore_eos",        false);
     llama_params["tfs_z"]             = json_value(body,   "tfs_z",             default_sparams.tfs_z);
 
-    if (body.count("grammar") != 0) {
+    if (body.contains("grammar")) {
         llama_params["grammar"] = json_value(body, "grammar", json::object());
     }
 
+    if (body.contains("response_format")) {
+      auto response_format = json_value(body, "response_format", json::object());
+      if (response_format.contains("schema") && response_format["type"] == "json_object") {
+        llama_params["json_schema"] = json_value(response_format, "schema", json::object());
+        std::cerr << "GOT " << llama_params["json_schema"] << std::endl;
+      }
+    }
+
     // Handle 'stop' field
     if (body.contains("stop") && body["stop"].is_string()) {
         llama_params["stop"] = json::array({body["stop"].get<std::string>()});

From 51ca7cb863a3a986f5013ea440c1981965003f31 Mon Sep 17 00:00:00 2001
From: Olivier Chafik <ochafik@google.com>
Date: Mon, 11 Mar 2024 22:20:19 +0000
Subject: [PATCH 52/98] json: nits

---
 examples/json-schema-to-grammar.py                | 2 +-
 examples/server/public/json-schema-to-grammar.mjs | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/examples/json-schema-to-grammar.py b/examples/json-schema-to-grammar.py
index 3461e7d9dc537..6590aa00c8bc2 100755
--- a/examples/json-schema-to-grammar.py
+++ b/examples/json-schema-to-grammar.py
@@ -103,7 +103,7 @@ def visit(n: dict):
                             self._refs[base_url] = target
 
                         if len(frag_split) == 1 or frag_split[-1] == '':
-                            return
+                            return target
                     elif ref.startswith('#/'):
                         target = schema
                         ref = f'{url}{ref}'
diff --git a/examples/server/public/json-schema-to-grammar.mjs b/examples/server/public/json-schema-to-grammar.mjs
index 05fb8c5e94629..76407db529520 100644
--- a/examples/server/public/json-schema-to-grammar.mjs
+++ b/examples/server/public/json-schema-to-grammar.mjs
@@ -103,7 +103,7 @@ export class SchemaConverter {
             }
 
             if (fragSplit.length === 1 || fragSplit[fragSplit.length - 1] === '') {
-              return;
+              return target;
             }
           } else if (ref.startsWith('#/')) {
             target = schema;

From d934adccead85336ea1ff7ec873c810d261249e8 Mon Sep 17 00:00:00 2001
From: ochafik <ochafik@google.com>
Date: Mon, 11 Mar 2024 23:09:51 +0000
Subject: [PATCH 53/98] Update json-schema-to-grammar.cpp

---
 examples/server/json-schema-to-grammar.cpp | 72 ++++++++++------------
 1 file changed, 32 insertions(+), 40 deletions(-)

diff --git a/examples/server/json-schema-to-grammar.cpp b/examples/server/json-schema-to-grammar.cpp
index 264a32fa3fa28..36d8fac74c1df 100644
--- a/examples/server/json-schema-to-grammar.cpp
+++ b/examples/server/json-schema-to-grammar.cpp
@@ -88,30 +88,42 @@ static string repeat(const string& str, size_t n) {
     return result;
 }
 
+static std::string replacePattern(const std::string& input, const regex& regex, const function<string(const smatch &)>& replacement) {
+    std::smatch match;
+    std::string result;
+    
+    std::string::const_iterator searchStart(input.cbegin());
+    std::string::const_iterator searchEnd(input.cend());
+    
+    while (std::regex_search(searchStart, searchEnd, match, regex)) {
+        result.append(searchStart, searchStart + match.position());
+        result.append(replacement(match));
+        searchStart = match.suffix().first;
+    }
+    
+    result.append(searchStart, searchEnd);
+    
+    return result;
+}
+
 static string _format_literal(const string& literal) {
-    string escaped = json(literal).dump();
-    smatch match;
-    while (regex_search(escaped, match, GRAMMAR_LITERAL_ESCAPE_RE)) {
+    string escaped = replacePattern(json(literal).dump(), GRAMMAR_LITERAL_ESCAPE_RE, [&](const auto& match) {
         char c = match.str()[0];
-        escaped.replace(match.position(), 1, GRAMMAR_LITERAL_ESCAPES.at(c));
-    }
+        return GRAMMAR_LITERAL_ESCAPES.at(c);
+    });
     return "\"" + escaped + "\"";
 }
 
-static string _format_range_char(const string& literal) {
-    string escaped = literal.substr(1, literal.length() - 2);
-    smatch match;
-    while (regex_search(escaped, match, GRAMMAR_RANGE_LITERAL_ESCAPE_RE)) {
+static string _format_range_char(const string& ch) {
+    return replacePattern(ch, GRAMMAR_RANGE_LITERAL_ESCAPE_RE, [&](const auto& match) {
         char c = match.str()[0];
-        escaped.replace(match.position(), 1, GRAMMAR_LITERAL_ESCAPES.at(c));
-    }
-    return escaped;
+        return GRAMMAR_LITERAL_ESCAPES.at(c);
+    });
 }
 
 
 class SchemaConverter {
 private:
-    unordered_map<string, int> _prop_order;
     std::optional<std::function<json(const string&)>> _fetch_json;
     bool _dotall;
     unordered_map<string, string> _rules;
@@ -348,21 +360,8 @@ class SchemaConverter {
     }
 
     string _build_object_rule(const vector<pair<string, json>>& properties, const unordered_set<string>& required, const string& name) {
-        unordered_map<string, int> prop_order = _prop_order;
-        vector<string> sorted_props;
-        for (size_t i = 0; i < properties.size(); i++) {
-            const auto& prop = properties[i];
-            int order = (prop_order.find(prop.first) != prop_order.end()) ? prop_order[prop.first] : (int)prop_order.size();
-            sorted_props.push_back(prop.first);
-            for (size_t j = sorted_props.size() - 1; j > 0; j--) {
-                if (order < ((prop_order.find(sorted_props[j - 1]) != prop_order.end()) ? prop_order[sorted_props[j - 1]] : (int)prop_order.size())) {
-                    swap(sorted_props[j], sorted_props[j - 1]);
-                } else {
-                    break;
-                }
-            }
-        }
-
+        vector<string> required_props;
+        vector<string> optional_props;
         unordered_map<string, string> prop_kv_rule_names;
         for (const auto& [prop_name, prop_schema] : properties) {
             string prop_rule_name = visit(prop_schema, name + (name.empty() ? "" : "-") + prop_name);
@@ -370,15 +369,10 @@ class SchemaConverter {
                 name + (name.empty() ? "" : "-") + prop_name + "-kv",
                 _format_literal(prop_name) + " space \":\" space " + prop_rule_name
             );
-        }
-
-        vector<string> required_props;
-        vector<string> optional_props;
-        for (const auto& prop : sorted_props) {
-            if (required.find(prop) != required.end()) {
-                required_props.push_back(prop);
+            if (required.find(prop_name) != required.end()) {
+                required_props.push_back(prop_name);
             } else {
-                optional_props.push_back(prop);
+                optional_props.push_back(prop_name);
             }
         }
 
@@ -438,10 +432,9 @@ class SchemaConverter {
 
 public:
     SchemaConverter(
-        const unordered_map<std::string, int>& prop_order,
         const std::optional<std::function<json(const string&)>>& fetch_json,
         bool dotall)
-          : _prop_order(prop_order), _fetch_json(fetch_json), _dotall(dotall)
+          : _fetch_json(fetch_json), _dotall(dotall)
     {
         _rules["space"] = SPACE_RULE;
     }
@@ -668,11 +661,10 @@ class SchemaConverter {
 
 
 string json_schema_to_grammar(const json& schema) {
-  unordered_map<string, int> prop_order;
   auto dotall = false;
   string url("input");
 
-  SchemaConverter converter(prop_order, /* fetch_json= */ std::nullopt, dotall);
+  SchemaConverter converter(/* fetch_json= */ std::nullopt, dotall);
   auto copy = schema;
   copy = converter.resolve_refs(copy, url);
   converter.visit(copy, "");

From 8caaf1641d8dfe63ad8d167492cd953c3391a638 Mon Sep 17 00:00:00 2001
From: ochafik <ochafik@google.com>
Date: Tue, 12 Mar 2024 00:02:45 +0000
Subject: [PATCH 54/98] Update json-schema-to-grammar.cpp

---
 examples/server/json-schema-to-grammar.cpp | 28 ++++++++++------------
 1 file changed, 12 insertions(+), 16 deletions(-)

diff --git a/examples/server/json-schema-to-grammar.cpp b/examples/server/json-schema-to-grammar.cpp
index 36d8fac74c1df..36ef5d6e6e9a8 100644
--- a/examples/server/json-schema-to-grammar.cpp
+++ b/examples/server/json-schema-to-grammar.cpp
@@ -439,16 +439,16 @@ class SchemaConverter {
         _rules["space"] = SPACE_RULE;
     }
 
-    json resolve_refs(nlohmann::json& schema, const std::string& url) {
+    void resolve_refs(nlohmann::json& schema, const std::string& url) {
         /*
         * Resolves all $ref fields in the given schema, fetching any remote schemas,
-        * replacing $ref with absolute reference URL and populating _refs with the
+        * replacing each $ref with absolute reference URL and populates _refs with the
         * respective referenced (sub)schema dictionaries.
         */
-        function<json(json&)> visit_refs = [&](json& n) {
+        function<void(json&)> visit_refs = [&](json& n) {
             if (n.is_array()) {
                 for (auto& x : n) {
-                    x = visit_refs(x);
+                    visit_refs(x);
                 }
             } else if (n.is_object()) {
                 if (n.contains("$ref")) {
@@ -463,11 +463,11 @@ class SchemaConverter {
                             } else {
                                 // Fetch the referenced schema and resolve its refs
                                 auto referenced = _fetch_json.value()(ref);
-                                target = resolve_refs(referenced, base_url);
-                                _refs[base_url] = target;
+                                resolve_refs(referenced, base_url);
+                                _refs[base_url] = referenced;
                             }
                             if (ref.find('#') == string::npos || ref.substr(ref.find('#') + 1).empty()) {
-                                return target;
+                                return;
                             }
                         } else if (ref.find("#/") == 0) {
                             target = schema;
@@ -475,7 +475,7 @@ class SchemaConverter {
                             ref = url + ref;
                         } else {
                             _errors.push_back("Unsupported ref: " + ref);
-                            return n;
+                            return;
                         }
                         string pointer = ref.substr(ref.find('#') + 1);
                         vector<string> tokens = split(pointer, "/");
@@ -483,7 +483,7 @@ class SchemaConverter {
                             string sel = tokens[i];
                             if (target.is_null() || !target.contains(sel)) {
                               _errors.push_back("Error resolving ref " + ref + ": " + sel + " not in " + target.dump());
-                              return n;
+                              return;
                             }
                             target = target[sel];
                         }
@@ -495,10 +495,9 @@ class SchemaConverter {
                     }
                 }
             }
-            return n;
         };
 
-        return visit_refs(schema);
+        visit_refs(schema);
     }
 
     string visit(const json& schema, const string& name) {
@@ -661,12 +660,9 @@ class SchemaConverter {
 
 
 string json_schema_to_grammar(const json& schema) {
-  auto dotall = false;
-  string url("input");
-
-  SchemaConverter converter(/* fetch_json= */ std::nullopt, dotall);
+  SchemaConverter converter(/* fetch_json= */ std::nullopt, /* dotall= */ false);
   auto copy = schema;
-  copy = converter.resolve_refs(copy, url);
+  converter.resolve_refs(copy, "input");
   converter.visit(copy, "");
   converter.check_errors();
   return converter.format_grammar();

From 8fee84b45cfeac573a49733ca604c1a1d7a9fea4 Mon Sep 17 00:00:00 2001
From: ochafik <ochafik@google.com>
Date: Tue, 12 Mar 2024 02:06:48 +0000
Subject: [PATCH 55/98] Update json-schema-to-grammar.cpp

---
 examples/server/json-schema-to-grammar.cpp | 115 +++++++++++++--------
 1 file changed, 72 insertions(+), 43 deletions(-)

diff --git a/examples/server/json-schema-to-grammar.cpp b/examples/server/json-schema-to-grammar.cpp
index 36ef5d6e6e9a8..31f321b5d9cd2 100644
--- a/examples/server/json-schema-to-grammar.cpp
+++ b/examples/server/json-schema-to-grammar.cpp
@@ -1,13 +1,14 @@
 #include "json-schema-to-grammar.h"
-#include <string>
-#include <vector>
-#include <unordered_map>
-#include <unordered_set>
+#include <algorithm>
+#include <fstream>
 #include <iostream>
+#include <map>
 #include <regex>
-#include <algorithm>
 #include <sstream>
-#include <fstream>
+#include <string>
+#include <unordered_map>
+#include <unordered_set>
+#include <vector>
 
 using json = nlohmann::json;
 using namespace std;
@@ -21,8 +22,15 @@ unordered_map<string, string> PRIMITIVE_RULES = {
     {"value", "object | array | string | number | boolean"},
     {"object", "\"{\" space ( string \":\" space value (\",\" space string \":\" space value)* )? \"}\" space"},
     {"array", "\"[\" space ( value (\",\" space value)* )? \"]\" space"},
-    {"uuid", "\"\\\"\" \"-\" \"-\" \"-\" \"-\" \"\\\"\" space"},
-    {"string", "\"\\\"\" ([^\"\\\\] | \"\\\\\" ([\"\\\\/bfnrt] | \"u\" [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F]))* \"\\\"\" space"},
+    {"uuid", "\"\\\"\" [0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F] "
+                "\"-\" [0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F] "
+                "\"-\" [0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F] "
+                "\"-\" [0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F] "
+                "\"-\" [0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F] \"\\\"\" space"},
+    {"string", " \"\\\"\" (\n"
+               "        [^\"\\\\] |\n"
+               "        \"\\\\\" ([\"\\\\/bfnrt] | \"u\" [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F])\n"
+               "      )* \"\\\"\" space"},
     {"null", "\"null\" space"}
 };
 
@@ -61,15 +69,15 @@ static std::vector<std::string> split(const std::string& str, const std::string&
     std::vector<std::string> tokens;
     size_t start = 0;
     size_t end = str.find(delimiter);
-    
+
     while (end != std::string::npos) {
         tokens.push_back(str.substr(start, end - start));
         start = end + delimiter.length();
         end = str.find(delimiter, start);
     }
-    
+
     tokens.push_back(str.substr(start));
-    
+
     return tokens;
 }
 
@@ -77,32 +85,32 @@ static string repeat(const string& str, size_t n) {
     if (n == 0) {
         return "";
     }
-    
+
     string result;
     result.reserve(str.length() * n);
-    
+
     for (size_t i = 0; i < n; ++i) {
         result += str;
     }
-    
+
     return result;
 }
 
 static std::string replacePattern(const std::string& input, const regex& regex, const function<string(const smatch &)>& replacement) {
     std::smatch match;
     std::string result;
-    
+
     std::string::const_iterator searchStart(input.cbegin());
     std::string::const_iterator searchEnd(input.cend());
-    
+
     while (std::regex_search(searchStart, searchEnd, match, regex)) {
         result.append(searchStart, searchStart + match.position());
         result.append(replacement(match));
         searchStart = match.suffix().first;
     }
-    
+
     result.append(searchStart, searchEnd);
-    
+
     return result;
 }
 
@@ -126,12 +134,12 @@ class SchemaConverter {
 private:
     std::optional<std::function<json(const string&)>> _fetch_json;
     bool _dotall;
-    unordered_map<string, string> _rules;
+    map<string, string> _rules;
     unordered_map<string, nlohmann::json> _refs;
     unordered_set<string> _refs_being_resolved;
     vector<string> _errors;
     vector<string> _warnings;
-    
+
     string _add_rule(const string& name, const string& rule) {
         string esc_name = regex_replace(name, INVALID_RULE_CHARS_RE, "-");
         if (_rules.find(esc_name) == _rules.end() || _rules[esc_name] == rule) {
@@ -289,26 +297,34 @@ class SchemaConverter {
                         seq.back().first = sub + "+";
                     } else {
                         if (!sub_is_literal) {
-                            string sub_id = sub_rule_ids[sub];
+                            string& sub_id = sub_rule_ids[sub];
                             if (sub_id.empty()) {
-                                sub_id = _add_rule(name + "-" + to_string(sub_rule_ids.size() + 1), sub);
-                                sub_rule_ids[sub] = sub_id;
+                                sub_id = _add_rule(name + "-" + to_string(sub_rule_ids.size()), sub);
                             }
                             sub = sub_id;
                         }
                         string result;
-                        for (int j = 0; j < min_times; j++) {
-                            if (sub_is_literal) {
-                                result += "\"" + repeat(sub.substr(1, sub.length() - 2), min_times) + "\"";
-                            } else {
-                                result += sub + " ";
+                        if (sub_is_literal && min_times > 0) {
+                            result = "\"" + repeat(sub.substr(1, sub.length() - 2), min_times) + "\"";
+                        } else {
+                            for (int j = 0; j < min_times; j++) {
+                                if (j > 0) {
+                                    result += " ";
+                                }
+                                result += sub;
                             }
                         }
+                        if (min_times > 0 && min_times < max_times) {
+                            result += " ";
+                        }
                         if (max_times == numeric_limits<int>::max()) {
                             result += sub + "*";
                         } else {
                             for (int j = min_times; j < max_times; j++) {
-                                result += sub + "? ";
+                                if (j > min_times) {
+                                    result += " ";
+                                }
+                                result += sub + "?";
                             }
                         }
                         seq.back().first = result;
@@ -417,12 +433,10 @@ class SchemaConverter {
                 }
                 rule += get_recursive_refs(vector<string>(optional_props.begin() + i, optional_props.end()), false);
             }
-            rule += " ";
-
             if (!required_props.empty()) {
-                rule += " ) ";
+                rule += " )";
             }
-            rule += " )? ";
+            rule += " )?";
         }
 
         rule += " \"}\" space ";
@@ -595,30 +609,25 @@ class SchemaConverter {
                 json max_items_json = schema.contains("maxItems") ? schema["maxItems"] : json();
                 int max_items = max_items_json.is_number_integer() ? max_items_json.get<int>() : -1;
                 if (min_items > 0) {
-                    successive_items = list_item_operator;
-                    for (int i = 1; i < min_items; i++) {
-                        successive_items += list_item_operator;
-                    }
+                    successive_items += repeat(list_item_operator, min_items - 1);
                     min_items--;
                 }
                 if (max_items >= 0 && max_items > min_items) {
-                    for (int i = min_items; i < max_items - 1; i++) {
-                        successive_items += (list_item_operator + "?");
-                    }
+                    successive_items += repeat(list_item_operator + "?", max_items - min_items - 1);
                 } else {
                     successive_items += list_item_operator + "*";
                 }
                 string rule;
                 if (min_items == 0) {
-                    rule = "\"[\" space ( " + item_rule_name + " " + successive_items + " )? \"]\" space";
+                    rule =  "\"[\" space ( " + item_rule_name + " " + successive_items + " )? \"]\" space";
                 } else {
-                    rule = "\"[\" space " + item_rule_name + " " + successive_items + " \"]\" space";
+                    rule =  "\"[\" space " + item_rule_name + " " + successive_items + " \"]\" space";
                 }
                 return _add_rule(rule_name, rule);
             }
         } else if ((schema_type.is_null() || schema_type == "string") && schema.contains("pattern")) {
             return _visit_pattern(schema["pattern"], rule_name);
-        } else if ((schema_type == "object" || schema_type.is_null()) && (schema.size() == 1 || schema.empty())) {
+        } else if (schema.empty() || (schema.size() == 1 && schema_type == "object")) {
             for (const auto& [t, r] : PRIMITIVE_RULES) {
                 _add_rule(t, r);
             }
@@ -667,3 +676,23 @@ string json_schema_to_grammar(const json& schema) {
   converter.check_errors();
   return converter.format_grammar();
 }
+
+#ifdef LLAMA_BUILD_JSON_SCHEMA_CONVERTER
+
+int main(int argc, const char** argv) {
+    if (argc != 2) {
+        cerr << "Expected only one argument" << endl;
+        return -1;
+    }
+    string file(argv[1]);
+    string schema;
+    if (file == "-") {
+        schema.append(istreambuf_iterator<char>(cin), istreambuf_iterator<char>());
+    } else {
+        ifstream in(argv[1]);
+        schema.append(istreambuf_iterator<char>(in), istreambuf_iterator<char>());
+    }
+    cout << json_schema_to_grammar(json::parse(schema)).c_str() << endl;
+}
+
+#endif

From 0be059def88f7697c36d79132e66152ddee25e69 Mon Sep 17 00:00:00 2001
From: ochafik <ochafik@google.com>
Date: Tue, 12 Mar 2024 02:08:07 +0000
Subject: [PATCH 56/98] json: fix mjs implementation + align outputs

---
 examples/json-schema-to-grammar.py            | 15 ++++++-----
 .../server/public/json-schema-to-grammar.mjs  | 25 ++++++++++---------
 2 files changed, 22 insertions(+), 18 deletions(-)

diff --git a/examples/json-schema-to-grammar.py b/examples/json-schema-to-grammar.py
index 6590aa00c8bc2..cda0837212a6b 100755
--- a/examples/json-schema-to-grammar.py
+++ b/examples/json-schema-to-grammar.py
@@ -17,11 +17,11 @@
     'value'  : 'object | array | string | number | boolean',
     'object' : '"{" space ( string ":" space value ("," space string ":" space value)* )? "}" space',
     'array'  : '"[" space ( value ("," space value)* )? "]" space',
-    'uuid'   : '"\\""' + ' "-" '.join('[0-9a-fA-F]' * n for n in [8, 4, 4, 4, 12]) + '"\\"" space',
+    'uuid'   : '"\\"" ' + ' "-" '.join('[0-9a-fA-F]' * n for n in [8, 4, 4, 4, 12]) + ' "\\"" space',
     'string': r''' "\"" (
         [^"\\] |
         "\\" (["\\/bfnrt] | "u" [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F])
-      )* "\"" space ''',
+      )* "\"" space''',
     'null': '"null" space',
 }
 
@@ -456,17 +456,20 @@ def get_recursive_refs(ks, first_is_optional):
             rule += ' | '.join(
                 get_recursive_refs(optional_props[i:], first_is_optional=False)
                 for i in range(len(optional_props))
-            ) + ' '
+            )
             if required_props:
-                rule += ' ) '
-            rule += ' )? '
+                rule += ' )'
+            rule += ' )?'
 
         rule += ' "}" space '
 
         return rule
 
     def format_grammar(self):
-        return '\n'.join((f'{name} ::= {rule}' for name, rule in self._rules.items()))
+        return '\n'.join(
+            f'{name} ::= {rule}'
+            for name, rule in sorted(self._rules.items(), key=lambda kv: kv[0])
+        )
 
 
 def main(args_in = None):
diff --git a/examples/server/public/json-schema-to-grammar.mjs b/examples/server/public/json-schema-to-grammar.mjs
index 76407db529520..eea837dc89619 100644
--- a/examples/server/public/json-schema-to-grammar.mjs
+++ b/examples/server/public/json-schema-to-grammar.mjs
@@ -8,7 +8,7 @@ const PRIMITIVE_RULES = {
   value: 'object | array | string | number | boolean',
   object: '"{" space ( string ":" space value ("," space string ":" space value)* )? "}" space',
   array: '"[" space ( value ("," space value)* )? "]" space',
-  uuid: '"\\""' + [8, 4, 4, 4, 12].map(n => [...new Array(n)].map(_ => '[0-9a-fA-F]').join('')).join(' "-" ') + '"\\"" space',
+  uuid: '"\\"" ' + [8, 4, 4, 4, 12].map(n => [...new Array(n)].map(_ => '[0-9a-fA-F]').join('')).join(' "-" ') + ' "\\"" space',
   string: ` "\\"" (
         [^"\\\\] |
         "\\\\" (["\\\\/bfnrt] | "u" [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F])
@@ -135,7 +135,7 @@ export class SchemaConverter {
 
   _generateUnionRule(name, altSchemas) {
     return altSchemas
-      .map((altSchema, i) => this.visit(altSchema, `${name}${name ? '-' : ''}${i}`))
+      .map((altSchema, i) => this.visit(altSchema, `${name ?? ''}${name ? '-' : ''}${i}`))
       .join(' | ');
   }
 
@@ -377,7 +377,7 @@ export class SchemaConverter {
     } else if ((schemaType === undefined || schemaType === 'object') && 'additionalProperties' in schema) {
       const additionalProperties = typeof schema.additionalProperties === 'object' ? schema.additionalProperties : {};
 
-      const subName = `${name}${name ? '-' : ''}additionalProperties`;
+      const subName = `${name ?? ''}${name ? '-' : ''}additionalProperties`;
       const valueRule = this.visit(additionalProperties, `${subName}-value`);
       const kvRule = this._addRule(`${subName}-kv`, `string ":" space ${valueRule}`);
       return this._addRule(ruleName, `( ${kvRule} ( "," space ${kvRule} )* )*`);
@@ -387,17 +387,18 @@ export class SchemaConverter {
         return this._addRule(
           ruleName,
           '"[" space ' +
-            items.map((item, i) => this.visit(item, `${name}${name ? '-' : ''}tuple-${i}`)).join(' "," space ') +
+            items.map((item, i) => this.visit(item, `${name ?? ''}${name ? '-' : ''}tuple-${i}`)).join(' "," space ') +
             ' "]" space'
         );
       } else {
-        const itemRuleName = this.visit(items, `${name}${name ? '-' : ''}item`);
+        const itemRuleName = this.visit(items, `${name ?? ''}${name ? '-' : ''}item`);
         const listItemOperator = `( "," space ${itemRuleName} )`;
         let successiveItems = '';
-        const minItems = schema.minItems || 0;
+        let minItems = schema.minItems || 0;
         const maxItems = schema.maxItems;
         if (minItems > 0) {
           successiveItems = listItemOperator.repeat(minItems - 1);
+          minItems--;
         }
         if (maxItems !== undefined && maxItems > minItems) {
           successiveItems += `${listItemOperator}?`.repeat(maxItems - minItems - 1);
@@ -449,9 +450,9 @@ export class SchemaConverter {
 
     const propKvRuleNames = {};
     for (const [propName, propSchema] of properties) {
-      const propRuleName = this.visit(propSchema, `${name}${name ? '-' : ''}${propName}`);
+      const propRuleName = this.visit(propSchema, `${name ?? ''}${name ? '-' : ''}${propName}`);
       propKvRuleNames[propName] = this._addRule(
-        `${name}${name ? '-' : ''}${propName}-kv`,
+        `${name ?? ''}${name ? '-' : ''}${propName}-kv`,
         `${this._formatLiteral(propName)} space ":" space ${propRuleName}`
       );
     }
@@ -474,7 +475,7 @@ export class SchemaConverter {
         let res = firstIsOptional ? `( "," space ${kvRuleName} )?` : kvRuleName;
         if (rest.length > 0) {
           res += ' ' + this._addRule(
-            `${name}${name ? '-' : ''}${k}-rest`,
+            `${name ?? ''}${name ? '-' : ''}${k}-rest`,
             getRecursiveRefs(rest, true)
           );
         }
@@ -483,9 +484,9 @@ export class SchemaConverter {
 
       rule += optionalProps.map((_, i) => getRecursiveRefs(optionalProps.slice(i), false)).join(' | ');
       if (requiredProps.length > 0) {
-        rule += ' ) ';
+        rule += ' )';
       }
-      rule += ' )? ';
+      rule += ' )?';
     }
 
     rule += ' "}" space ';
@@ -495,7 +496,7 @@ export class SchemaConverter {
 
   formatGrammar() {
     let grammar = '';
-    for (const [name, rule] of Object.entries(this._rules)) {
+    for (const [name, rule] of Object.entries(this._rules).sort(([a], [b]) => a.localeCompare(b))) {
       grammar += `${name} ::= ${rule}\n`;
     }
     return grammar;

From a740bfacad6f5e9923cc0edb0a4e54b5423010d9 Mon Sep 17 00:00:00 2001
From: ochafik <ochafik@google.com>
Date: Tue, 12 Mar 2024 02:09:07 +0000
Subject: [PATCH 57/98] Update json-schema-to-grammar.mjs.hpp

---
 .../server/json-schema-to-grammar.mjs.hpp     | 2873 +++++++++--------
 1 file changed, 1441 insertions(+), 1432 deletions(-)

diff --git a/examples/server/json-schema-to-grammar.mjs.hpp b/examples/server/json-schema-to-grammar.mjs.hpp
index e5e69c2054989..cf5aaba287433 100644
--- a/examples/server/json-schema-to-grammar.mjs.hpp
+++ b/examples/server/json-schema-to-grammar.mjs.hpp
@@ -46,1502 +46,1511 @@ unsigned char json_schema_to_grammar_mjs[] = {
   0x61, 0x6c, 0x75, 0x65, 0x29, 0x2a, 0x20, 0x29, 0x3f, 0x20, 0x22, 0x5d,
   0x22, 0x20, 0x73, 0x70, 0x61, 0x63, 0x65, 0x27, 0x2c, 0x0a, 0x20, 0x20,
   0x75, 0x75, 0x69, 0x64, 0x3a, 0x20, 0x27, 0x22, 0x5c, 0x5c, 0x22, 0x22,
-  0x27, 0x20, 0x2b, 0x20, 0x5b, 0x38, 0x2c, 0x20, 0x34, 0x2c, 0x20, 0x34,
-  0x2c, 0x20, 0x34, 0x2c, 0x20, 0x31, 0x32, 0x5d, 0x2e, 0x6d, 0x61, 0x70,
-  0x28, 0x6e, 0x20, 0x3d, 0x3e, 0x20, 0x5b, 0x2e, 0x2e, 0x2e, 0x6e, 0x65,
-  0x77, 0x20, 0x41, 0x72, 0x72, 0x61, 0x79, 0x28, 0x6e, 0x29, 0x5d, 0x2e,
-  0x6d, 0x61, 0x70, 0x28, 0x5f, 0x20, 0x3d, 0x3e, 0x20, 0x27, 0x5b, 0x30,
-  0x2d, 0x39, 0x61, 0x2d, 0x66, 0x41, 0x2d, 0x46, 0x5d, 0x27, 0x29, 0x2e,
-  0x6a, 0x6f, 0x69, 0x6e, 0x28, 0x27, 0x27, 0x29, 0x29, 0x2e, 0x6a, 0x6f,
-  0x69, 0x6e, 0x28, 0x27, 0x20, 0x22, 0x2d, 0x22, 0x20, 0x27, 0x29, 0x20,
-  0x2b, 0x20, 0x27, 0x22, 0x5c, 0x5c, 0x22, 0x22, 0x20, 0x73, 0x70, 0x61,
-  0x63, 0x65, 0x27, 0x2c, 0x0a, 0x20, 0x20, 0x73, 0x74, 0x72, 0x69, 0x6e,
-  0x67, 0x3a, 0x20, 0x60, 0x20, 0x22, 0x5c, 0x5c, 0x22, 0x22, 0x20, 0x28,
-  0x0a, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x5b, 0x5e, 0x22,
-  0x5c, 0x5c, 0x5c, 0x5c, 0x5d, 0x20, 0x7c, 0x0a, 0x20, 0x20, 0x20, 0x20,
-  0x20, 0x20, 0x20, 0x20, 0x22, 0x5c, 0x5c, 0x5c, 0x5c, 0x22, 0x20, 0x28,
-  0x5b, 0x22, 0x5c, 0x5c, 0x5c, 0x5c, 0x2f, 0x62, 0x66, 0x6e, 0x72, 0x74,
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+  0x5d, 0x20, 0x6f, 0x66, 0x20, 0x4f, 0x62, 0x6a, 0x65, 0x63, 0x74, 0x2e,
+  0x65, 0x6e, 0x74, 0x72, 0x69, 0x65, 0x73, 0x28, 0x74, 0x68, 0x69, 0x73,
+  0x2e, 0x5f, 0x72, 0x75, 0x6c, 0x65, 0x73, 0x29, 0x2e, 0x73, 0x6f, 0x72,
+  0x74, 0x28, 0x28, 0x5b, 0x61, 0x5d, 0x2c, 0x20, 0x5b, 0x62, 0x5d, 0x29,
+  0x20, 0x3d, 0x3e, 0x20, 0x61, 0x2e, 0x6c, 0x6f, 0x63, 0x61, 0x6c, 0x65,
+  0x43, 0x6f, 0x6d, 0x70, 0x61, 0x72, 0x65, 0x28, 0x62, 0x29, 0x29, 0x29,
   0x20, 0x7b, 0x0a, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x67, 0x72, 0x61,
   0x6d, 0x6d, 0x61, 0x72, 0x20, 0x2b, 0x3d, 0x20, 0x60, 0x24, 0x7b, 0x6e,
   0x61, 0x6d, 0x65, 0x7d, 0x20, 0x3a, 0x3a, 0x3d, 0x20, 0x24, 0x7b, 0x72,
@@ -1584,4 +1593,4 @@ unsigned char json_schema_to_grammar_mjs[] = {
   0x4b, 0x65, 0x79, 0x2c, 0x20, 0x67, 0x72, 0x6f, 0x75, 0x70, 0x5d, 0x3b,
   0x0a, 0x20, 0x20, 0x7d, 0x0a, 0x7d, 0x0a
 };
-unsigned int json_schema_to_grammar_mjs_len = 19003;
+unsigned int json_schema_to_grammar_mjs_len = 19111;

From 192a58a5d32291981d34d194b843ff99ab13bd97 Mon Sep 17 00:00:00 2001
From: ochafik <ochafik@google.com>
Date: Tue, 12 Mar 2024 03:46:55 +0000
Subject: [PATCH 58/98] json: test C++, JS & Python versions

---
 CMakeLists.txt                        |   2 +-
 Makefile                              |  14 +-
 common/CMakeLists.txt                 |   2 -
 tests/CMakeLists.txt                  |   2 +
 tests/run-json-schema-to-grammar.mjs  |  10 +
 tests/test-json-schema-to-grammar.cpp | 307 ++++++++++++++++++++++++++
 6 files changed, 332 insertions(+), 5 deletions(-)
 create mode 100644 tests/run-json-schema-to-grammar.mjs
 create mode 100755 tests/test-json-schema-to-grammar.cpp

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 9309ca6bbe4d7..1e30fdaf97c98 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -135,7 +135,7 @@ include(${CMAKE_CURRENT_SOURCE_DIR}/scripts/build-info.cmake)
 if (LLAMA_SYCL)
     set(CMAKE_CXX_STANDARD 17)
 else()
-    set(CMAKE_CXX_STANDARD 11)
+    set(CMAKE_CXX_STANDARD 17)
 endif()
 
 set(CMAKE_CXX_STANDARD_REQUIRED true)
diff --git a/Makefile b/Makefile
index c2d6c58e0e79e..9b6af7168a942 100644
--- a/Makefile
+++ b/Makefile
@@ -9,7 +9,8 @@ TEST_TARGETS = \
 	tests/test-llama-grammar tests/test-grammar-parser tests/test-double-float tests/test-grad0 tests/test-opt \
 	tests/test-quantize-fns tests/test-quantize-perf tests/test-sampling tests/test-tokenizer-0-llama          \
 	tests/test-tokenizer-0-falcon tests/test-tokenizer-1-llama tests/test-tokenizer-1-bpe tests/test-rope      \
-	tests/test-backend-ops tests/test-model-load-cancel tests/test-autorelease
+	tests/test-backend-ops tests/test-model-load-cancel tests/test-autorelease                                 \
+	tests/test-json-schema-to-grammar
 
 # Code coverage output files
 COV_TARGETS = *.gcno tests/*.gcno *.gcda tests/*.gcda *.gcov tests/*.gcov lcov-report gcovr-report
@@ -653,6 +654,11 @@ console.o: common/console.cpp common/console.h
 grammar-parser.o: common/grammar-parser.cpp common/grammar-parser.h
 	$(CXX) $(CXXFLAGS) -c $< -o $@
 
+json-schema-to-grammar.o: examples/server/json-schema-to-grammar.cpp examples/server/json-schema-to-grammar.h
+	$(CXX) $(CXXFLAGS) -c $< -o $@
+	# $(CXX) $(CXXFLAGS) -c $< -o $(call GET_OBJ_FILE, $<)  -DLLAMA_BUILD_JSON_SCHEMA_CONVERTER=1 
+	# $(CXX) $(CXXFLAGS) $(filter-out %.h $<,$^) $(call GET_OBJ_FILE, $<) -o $@ $(LDFLAGS)
+
 train.o: common/train.cpp common/train.h
 	$(CXX) $(CXXFLAGS) -c $< -o $@
 
@@ -728,7 +734,7 @@ save-load-state: examples/save-load-state/save-load-state.cpp ggml.o llama.o $(C
 	$(CXX) $(CXXFLAGS) -c $< -o $(call GET_OBJ_FILE, $<)
 	$(CXX) $(CXXFLAGS) $(filter-out %.h $<,$^) $(call GET_OBJ_FILE, $<) -o $@ $(LDFLAGS)
 
-server: examples/server/server.cpp examples/server/utils.hpp examples/server/httplib.h examples/server/json.hpp examples/server/index.html.hpp examples/server/index.js.hpp examples/server/completion.js.hpp examples/server/json-schema-to-grammar.cpp examples/server/json-schema-to-grammar.h common/stb_image.h ggml.o llama.o $(COMMON_DEPS) grammar-parser.o $(OBJS)
+server: examples/server/server.cpp examples/server/utils.hpp examples/server/httplib.h examples/server/json.hpp examples/server/index.html.hpp examples/server/index.js.hpp examples/server/completion.js.hpp json-schema-to-grammar.o common/stb_image.h ggml.o llama.o $(COMMON_DEPS) grammar-parser.o $(OBJS)
 	$(CXX) $(CXXFLAGS) -c $< -o $(call GET_OBJ_FILE, $<)
 	$(CXX) $(CXXFLAGS) $(filter-out %.h %.hpp $<,$^) -Iexamples/server $(call GET_OBJ_FILE, $<) -o $@ $(LDFLAGS) $(LWINSOCK2)
 
@@ -844,6 +850,10 @@ tests/test-double-float: tests/test-double-float.cpp ggml.o $(OBJS)
 	$(CXX) $(CXXFLAGS) -c $< -o $(call GET_OBJ_FILE, $<)
 	$(CXX) $(CXXFLAGS) $(filter-out %.h $<,$^) $(call GET_OBJ_FILE, $<) -o $@ $(LDFLAGS)
 
+tests/test-json-schema-to-grammar: tests/test-json-schema-to-grammar.cpp json-schema-to-grammar.o
+	$(CXX) $(CXXFLAGS) -c $< -o $(call GET_OBJ_FILE, $<)
+	$(CXX) $(CXXFLAGS) $(filter-out %.h $<,$^) $(call GET_OBJ_FILE, $<) -o $@ $(LDFLAGS)
+
 tests/test-grad0: tests/test-grad0.cpp ggml.o $(OBJS)
 	$(CXX) $(CXXFLAGS) -c $< -o $(call GET_OBJ_FILE, $<)
 	$(CXX) $(CXXFLAGS) $(filter-out %.h $<,$^) $(call GET_OBJ_FILE, $<) -o $@ $(LDFLAGS)
diff --git a/common/CMakeLists.txt b/common/CMakeLists.txt
index 9fc0a78050310..350bbdf7f7b1b 100644
--- a/common/CMakeLists.txt
+++ b/common/CMakeLists.txt
@@ -60,8 +60,6 @@ add_library(${TARGET} STATIC
     console.cpp
     grammar-parser.h
     grammar-parser.cpp
-    json-schema-to-grammar.h
-    json-schema-to-grammar.cpp
     train.h
     train.cpp
     )
diff --git a/tests/CMakeLists.txt b/tests/CMakeLists.txt
index 10326d531e9fb..4389f4a16e99f 100644
--- a/tests/CMakeLists.txt
+++ b/tests/CMakeLists.txt
@@ -59,6 +59,8 @@ llama_build_and_test_executable(test-backend-ops.cpp)
 
 llama_build_and_test_executable(test-rope.cpp)
 
+llama_build_and_test_executable(test-json-schema-to-grammar.cpp)
+
 llama_build_and_test_executable_with_label(test-model-load-cancel.cpp "model")
 llama_build_and_test_executable_with_label(test-autorelease.cpp "model")
 
diff --git a/tests/run-json-schema-to-grammar.mjs b/tests/run-json-schema-to-grammar.mjs
new file mode 100644
index 0000000000000..71bf62ed34a6e
--- /dev/null
+++ b/tests/run-json-schema-to-grammar.mjs
@@ -0,0 +1,10 @@
+import { readFileSync } from "fs"
+import { SchemaConverter } from "../examples/server/public/json-schema-to-grammar.mjs"
+
+const [, , file] = process.argv
+const url = `file://${file}`
+let schema = JSON.parse(readFileSync(file, "utf8"));
+const converter = new SchemaConverter({})
+schema = await converter.resolveRefs(schema, url)
+converter.visit(schema, '')
+console.log(converter.formatGrammar())
diff --git a/tests/test-json-schema-to-grammar.cpp b/tests/test-json-schema-to-grammar.cpp
new file mode 100755
index 0000000000000..c07a105ef2d8d
--- /dev/null
+++ b/tests/test-json-schema-to-grammar.cpp
@@ -0,0 +1,307 @@
+#ifdef NDEBUG
+#undef NDEBUG
+#endif
+
+#include "llama.h"
+#include "grammar-parser.h"
+#include <cstdio>
+#include <cstdlib>
+#include <filesystem>
+#include <iostream>
+#include <istream>
+#include <fstream>
+#include <sstream>
+#include "../examples/server/json-schema-to-grammar.h"
+#include <cassert>
+#include <regex>
+
+using namespace std;
+namespace fs = std::filesystem;
+
+string INPUT_NAME(tmpnam(nullptr));
+string OUT_NAME(tmpnam(nullptr));
+
+static std::string trim(const std::string & source) {
+    std::string s(source);
+    s.erase(0,s.find_first_not_of(" \n\r\t"));
+    s.erase(s.find_last_not_of(" \n\r\t")+1);
+    return regex_replace(s, regex("(^|\n)[ \t]+"), "$1");
+}
+
+struct TestCase {
+  string name;
+  string schema;
+  string expected;
+
+  void prepare() const {
+    ofstream f;
+    f.open(INPUT_NAME);
+    f << schema.c_str();
+    f.close();
+  }
+
+  void read_and_verify(const string& series) const {
+    ostringstream actuals;
+    actuals << ifstream(OUT_NAME).rdbuf();
+    auto actual = actuals.str();
+    verify(series, actual);
+  }
+
+  void verify(const string& series, const string& actual) const {
+    if (trim(actual) != trim(expected)) {
+      cerr << "#" << endl;
+      cerr << "# Test " << series.c_str() << " / " << name.c_str() << " failed." << endl;
+      cerr << "#" << endl;
+      cerr << schema.c_str() << endl;
+      cerr << "# EXPECTED:\n" << expected.c_str() << endl;
+      cerr << "# ACTUAL:\n" << actual.c_str() << endl;
+      assert(false);
+    }
+  }
+
+};
+
+
+static void run_py(const TestCase& tc) {
+  cerr << "# Running Python " << tc.name.c_str() << endl;
+  tc.prepare();
+  std::system(("python ./examples/json-schema-to-grammar.py " + INPUT_NAME + " > " + OUT_NAME).c_str());
+  tc.read_and_verify("Python");
+}
+static void run_mjs(const TestCase& tc) {
+  cerr << "# Running MJS " << tc.name.c_str() << endl;
+  tc.prepare();
+  std::system(("node ./tests/run-json-schema-to-grammar.mjs " + INPUT_NAME + " > " + OUT_NAME).c_str());
+  tc.read_and_verify("JavaScript");
+}
+static void run_cpp(const TestCase& tc) {
+  cerr << "# Running C++ " << tc.name.c_str() << endl;
+  auto actual = json_schema_to_grammar(nlohmann::json::parse(tc.schema));
+  tc.verify("C++", actual);
+}
+
+static void run_all(const TestCase& tc) {
+  run_py(tc);
+  run_mjs(tc);
+  run_cpp(tc);
+}
+
+int main() {
+  run_all({
+    .name = "exotic formats",
+    .schema = R"""({
+      "prefixItems": [
+        { "format": "date" },
+        { "format": "uuid" },
+        { "format": "time" },
+        { "format": "date-time" }
+      ]
+    })""",
+    .expected = R"""(
+      date ::= [0-9] [0-9] [0-9] [0-9] "-" ( "0" [1-9] | "1" [0-2] ) "-" ( [0-2] [0-9] | "3" [0-1] )
+      date-string ::= "\"" date "\"" space
+      date-time ::= date "T" time
+      date-time-string ::= "\"" date-time "\"" space
+      root ::= "[" space date-string "," space uuid "," space time-string "," space date-time-string "]" space
+      space ::= " "?
+      time ::= ([01] [0-9] | "2" [0-3]) ":" [0-5] [0-9] ":" [0-5] [0-9] ( "." [0-9] [0-9] [0-9] )? ( "Z" | ( "+" | "-" ) ( [01] [0-9] | "2" [0-3] ) ":" [0-5] [0-9] )
+      time-string ::= "\"" time "\"" space
+      uuid ::= "\"" [0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F] "-" [0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F] "-" [0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F] "-" [0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F] "-" [0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F] "\"" space
+    )"""
+  });
+
+  run_all({
+    .name = "string",
+    .schema = R"""({
+      "type": "string"
+    })""",
+    .expected = R"""(
+      root ::=  "\"" (
+              [^"\\] |
+              "\\" (["\\/bfnrt] | "u" [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F])
+            )* "\"" space
+      space ::= " "?
+    )"""
+  });
+
+  run_all({
+    .name = "boolean",
+    .schema = R"""({
+      "type": "boolean"
+    })""",
+    .expected = R"""(
+      root ::= ("true" | "false") space
+      space ::= " "?
+    )"""
+  });
+
+  run_all({
+    .name = "integer",
+    .schema = R"""({
+      "type": "integer"
+    })""",
+    .expected = R"""(
+      root ::= ("-"? ([0-9] | [1-9] [0-9]*)) space
+      space ::= " "?
+    )"""
+  });
+
+  run_all({
+    .name = "number",
+    .schema = R"""({
+      "type": "number"
+    })""",
+    .expected = R"""(
+      root ::= ("-"? ([0-9] | [1-9] [0-9]*)) ("." [0-9]+)? ([eE] [-+]? [0-9]+)? space
+      space ::= " "?
+    )"""
+  });
+
+  run_all({
+    .name = "minItems",
+    .schema = R"""({
+      "items": {
+        "type": "boolean"
+      },
+      "minItems": 2
+    })""",
+    .expected = R"""(
+      boolean ::= ("true" | "false") space
+      root ::= "[" space boolean ( "," space boolean )( "," space boolean )* "]" space
+      space ::= " "?
+    )"""
+  });
+
+  run_all({
+    .name = "maxItems 1",
+    .schema = R"""({
+      "items": {
+        "type": "boolean"
+      },
+      "maxItems": 1
+    })""",
+    .expected = R"""(
+      boolean ::= ("true" | "false") space
+      root ::= "[" space ( boolean  )? "]" space
+      space ::= " "?
+    )"""
+  });
+
+  run_all({
+    .name = "maxItems 2",
+    .schema = R"""({
+      "items": {
+        "type": "boolean"
+      },
+      "maxItems": 2
+    })""",
+    .expected = R"""(
+      boolean ::= ("true" | "false") space
+      root ::= "[" space ( boolean ( "," space boolean )? )? "]" space
+      space ::= " "?
+    )"""
+  });
+
+  run_all({
+    .name = "min + maxItems",
+    .schema = R"""({
+      "items": {
+        "type": ["number", "integer"]
+      },
+      "minItems": 3,
+      "maxItems": 5
+    })""",
+    .expected = R"""(
+      integer ::= ("-"? ([0-9] | [1-9] [0-9]*)) space
+      item ::= number | integer
+      number ::= ("-"? ([0-9] | [1-9] [0-9]*)) ("." [0-9]+)? ([eE] [-+]? [0-9]+)? space
+      root ::= "[" space item ( "," space item )( "," space item )( "," space item )?( "," space item )? "]" space
+      space ::= " "?
+    )"""
+  });
+
+  run_all({
+    .name = "regexp",
+    .schema = R"""({
+      "type": "string",
+      "pattern": "^(\\([0-9]{1,3}\\))?[0-9]{3}-[0-9]{4} and...$"
+    })""",
+    .expected = R"""(
+      dot ::= [\U00000000-\x09\x0B\x0C\x0E-\U0010FFFF]
+      root ::= ("(" root-1 root-1? root-1? ")")? root-1 root-1 root-1 "-" root-1 root-1 root-1 root-1 " and" dot dot dot
+      root-1 ::= [0-9]
+      space ::= " "?
+    )"""
+  });
+
+  run_all({
+    .name = "optionals",
+    .schema = R"""({
+      "$schema": "http://json-schema.org/draft-07/schema#",
+      "type": "object",
+      "properties": {
+        "a": {
+          "type": "string"
+        },
+        "b": {
+          "type": "string"
+        },
+        "c": {
+          "type": [
+            "number",
+            "string"
+          ]
+        },
+        "d": {
+          "type": "string"
+        },
+        "e": {
+          "type": "object",
+          "additionalProperties": {
+            "type": "array",
+            "items": {
+              "type": "array",
+              "minItems": 2,
+              "items": [
+                {
+                  "type": "string"
+                },
+                {
+                  "type": "number"
+                }
+              ],
+              "maxItems": 2
+            }
+          }
+        }
+      },
+      "required": [
+        "a",
+        "b"
+      ],
+      "additionalProperties": false,
+      "definitions": {}
+    })""",
+    .expected = R"""(
+      a-kv ::= "\"a\"" space ":" space string
+      b-kv ::= "\"b\"" space ":" space string
+      c ::= number | string
+      c-kv ::= "\"c\"" space ":" space c
+      c-rest ::= ( "," space d-kv )? d-rest
+      d-kv ::= "\"d\"" space ":" space string
+      d-rest ::= ( "," space e-kv )?
+      e ::= ( e-additionalProperties-kv ( "," space e-additionalProperties-kv )* )*
+      e-additionalProperties-kv ::= string ":" space e-additionalProperties-value
+      e-additionalProperties-value ::= "[" space ( e-additionalProperties-value-item ( "," space e-additionalProperties-value-item )* )? "]" space
+      e-additionalProperties-value-item ::= "[" space string "," space number "]" space
+      e-kv ::= "\"e\"" space ":" space e
+      number ::= ("-"? ([0-9] | [1-9] [0-9]*)) ("." [0-9]+)? ([eE] [-+]? [0-9]+)? space
+      root ::= "{" space a-kv "," space b-kv ( "," space ( c-kv c-rest | d-kv d-rest | e-kv ) )? "}" space 
+      space ::= " "?
+      string ::=  "\"" (
+              [^"\\] |
+              "\\" (["\\/bfnrt] | "u" [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F])
+            )* "\"" space
+    )"""
+  });
+}

From 917b5d22605b043aac95fdeb4602b653fc5204e3 Mon Sep 17 00:00:00 2001
From: ochafik <ochafik@google.com>
Date: Tue, 12 Mar 2024 03:51:32 +0000
Subject: [PATCH 59/98] json: nits + regen deps

---
 examples/server/json-schema-to-grammar.hpp | 0
 tests/test-json-schema-to-grammar.cpp      | 4 +++-
 2 files changed, 3 insertions(+), 1 deletion(-)
 create mode 100644 examples/server/json-schema-to-grammar.hpp

diff --git a/examples/server/json-schema-to-grammar.hpp b/examples/server/json-schema-to-grammar.hpp
new file mode 100644
index 0000000000000..e69de29bb2d1d
diff --git a/tests/test-json-schema-to-grammar.cpp b/tests/test-json-schema-to-grammar.cpp
index c07a105ef2d8d..07b284f1b2b9a 100755
--- a/tests/test-json-schema-to-grammar.cpp
+++ b/tests/test-json-schema-to-grammar.cpp
@@ -50,7 +50,7 @@ struct TestCase {
   void verify(const string& series, const string& actual) const {
     if (trim(actual) != trim(expected)) {
       cerr << "#" << endl;
-      cerr << "# Test " << series.c_str() << " / " << name.c_str() << " failed." << endl;
+      cerr << "# Test " << name.c_str() << " (" << series.c_str() << ") failed." << endl;
       cerr << "#" << endl;
       cerr << schema.c_str() << endl;
       cerr << "# EXPECTED:\n" << expected.c_str() << endl;
@@ -68,12 +68,14 @@ static void run_py(const TestCase& tc) {
   std::system(("python ./examples/json-schema-to-grammar.py " + INPUT_NAME + " > " + OUT_NAME).c_str());
   tc.read_and_verify("Python");
 }
+
 static void run_mjs(const TestCase& tc) {
   cerr << "# Running MJS " << tc.name.c_str() << endl;
   tc.prepare();
   std::system(("node ./tests/run-json-schema-to-grammar.mjs " + INPUT_NAME + " > " + OUT_NAME).c_str());
   tc.read_and_verify("JavaScript");
 }
+
 static void run_cpp(const TestCase& tc) {
   cerr << "# Running C++ " << tc.name.c_str() << endl;
   auto actual = json_schema_to_grammar(nlohmann::json::parse(tc.schema));

From ee6166af73ec64fb364ff5c6c3b826fc9cf263d3 Mon Sep 17 00:00:00 2001
From: ochafik <ochafik@google.com>
Date: Tue, 12 Mar 2024 03:55:14 +0000
Subject: [PATCH 60/98] json: cleanup test

---
 examples/server/json-schema-to-grammar.cpp | 21 ---------------------
 tests/test-json-schema-to-grammar.cpp      |  9 +--------
 2 files changed, 1 insertion(+), 29 deletions(-)

diff --git a/examples/server/json-schema-to-grammar.cpp b/examples/server/json-schema-to-grammar.cpp
index 31f321b5d9cd2..163a240bd0373 100644
--- a/examples/server/json-schema-to-grammar.cpp
+++ b/examples/server/json-schema-to-grammar.cpp
@@ -667,7 +667,6 @@ class SchemaConverter {
     }
 };
 
-
 string json_schema_to_grammar(const json& schema) {
   SchemaConverter converter(/* fetch_json= */ std::nullopt, /* dotall= */ false);
   auto copy = schema;
@@ -676,23 +675,3 @@ string json_schema_to_grammar(const json& schema) {
   converter.check_errors();
   return converter.format_grammar();
 }
-
-#ifdef LLAMA_BUILD_JSON_SCHEMA_CONVERTER
-
-int main(int argc, const char** argv) {
-    if (argc != 2) {
-        cerr << "Expected only one argument" << endl;
-        return -1;
-    }
-    string file(argv[1]);
-    string schema;
-    if (file == "-") {
-        schema.append(istreambuf_iterator<char>(cin), istreambuf_iterator<char>());
-    } else {
-        ifstream in(argv[1]);
-        schema.append(istreambuf_iterator<char>(in), istreambuf_iterator<char>());
-    }
-    cout << json_schema_to_grammar(json::parse(schema)).c_str() << endl;
-}
-
-#endif
diff --git a/tests/test-json-schema-to-grammar.cpp b/tests/test-json-schema-to-grammar.cpp
index 07b284f1b2b9a..3be705fe721cc 100755
--- a/tests/test-json-schema-to-grammar.cpp
+++ b/tests/test-json-schema-to-grammar.cpp
@@ -2,17 +2,10 @@
 #undef NDEBUG
 #endif
 
-#include "llama.h"
-#include "grammar-parser.h"
-#include <cstdio>
-#include <cstdlib>
-#include <filesystem>
+#include "../examples/server/json-schema-to-grammar.h"
 #include <iostream>
-#include <istream>
 #include <fstream>
 #include <sstream>
-#include "../examples/server/json-schema-to-grammar.h"
-#include <cassert>
 #include <regex>
 
 using namespace std;

From 6165c55d3a89d8bcee43c144d9cc55ed15cc3000 Mon Sep 17 00:00:00 2001
From: ochafik <ochafik@google.com>
Date: Tue, 12 Mar 2024 04:07:22 +0000
Subject: [PATCH 61/98] json: revert from c++17 to 11

---
 CMakeLists.txt                             |  2 +-
 Makefile                                   |  2 +-
 examples/server/json-schema-to-grammar.cpp | 46 ++++++++++++----------
 tests/test-json-schema-to-grammar.cpp      |  1 -
 4 files changed, 28 insertions(+), 23 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 1e30fdaf97c98..9309ca6bbe4d7 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -135,7 +135,7 @@ include(${CMAKE_CURRENT_SOURCE_DIR}/scripts/build-info.cmake)
 if (LLAMA_SYCL)
     set(CMAKE_CXX_STANDARD 17)
 else()
-    set(CMAKE_CXX_STANDARD 17)
+    set(CMAKE_CXX_STANDARD 11)
 endif()
 
 set(CMAKE_CXX_STANDARD_REQUIRED true)
diff --git a/Makefile b/Makefile
index 9b6af7168a942..f828f6583336d 100644
--- a/Makefile
+++ b/Makefile
@@ -100,7 +100,7 @@ endif
 # keep standard at C11 and C++11
 MK_CPPFLAGS  = -I. -Icommon
 MK_CFLAGS    = -std=c11   -fPIC
-MK_CXXFLAGS  = -std=c++17 -fPIC
+MK_CXXFLAGS  = -std=c++11 -fPIC
 MK_NVCCFLAGS = -std=c++11
 
 # -Ofast tends to produce faster code, but may not be available for some compilers.
diff --git a/examples/server/json-schema-to-grammar.cpp b/examples/server/json-schema-to-grammar.cpp
index 163a240bd0373..d0f37916c6104 100644
--- a/examples/server/json-schema-to-grammar.cpp
+++ b/examples/server/json-schema-to-grammar.cpp
@@ -115,7 +115,7 @@ static std::string replacePattern(const std::string& input, const regex& regex,
 }
 
 static string _format_literal(const string& literal) {
-    string escaped = replacePattern(json(literal).dump(), GRAMMAR_LITERAL_ESCAPE_RE, [&](const auto& match) {
+    string escaped = replacePattern(json(literal).dump(), GRAMMAR_LITERAL_ESCAPE_RE, [&](const smatch& match) {
         char c = match.str()[0];
         return GRAMMAR_LITERAL_ESCAPES.at(c);
     });
@@ -123,7 +123,7 @@ static string _format_literal(const string& literal) {
 }
 
 static string _format_range_char(const string& ch) {
-    return replacePattern(ch, GRAMMAR_RANGE_LITERAL_ESCAPE_RE, [&](const auto& match) {
+    return replacePattern(ch, GRAMMAR_RANGE_LITERAL_ESCAPE_RE, [&](const smatch& match) {
         char c = match.str()[0];
         return GRAMMAR_LITERAL_ESCAPES.at(c);
     });
@@ -132,7 +132,7 @@ static string _format_range_char(const string& ch) {
 
 class SchemaConverter {
 private:
-    std::optional<std::function<json(const string&)>> _fetch_json;
+    std::function<json(const string&)> _fetch_json;
     bool _dotall;
     map<string, string> _rules;
     unordered_map<string, nlohmann::json> _refs;
@@ -288,13 +288,16 @@ class SchemaConverter {
                             max_times = stoi(nums[1]);
                         }
                     }
-                    auto [sub, sub_is_literal] = seq.back();
+                    auto &last = seq.back();
+                    auto &sub = last.first;
+                    auto sub_is_literal = last.second;
+
                     if (min_times == 0 && max_times == numeric_limits<int>::max()) {
-                        seq.back().first = sub + "*";
+                        sub += "*";
                     } else if (min_times == 0 && max_times == 1) {
-                        seq.back().first = sub + "?";
+                        sub += "?";
                     } else if (min_times == 1 && max_times == numeric_limits<int>::max()) {
-                        seq.back().first = sub + "+";
+                        sub += "+";
                     } else {
                         if (!sub_is_literal) {
                             string& sub_id = sub_rule_ids[sub];
@@ -379,7 +382,10 @@ class SchemaConverter {
         vector<string> required_props;
         vector<string> optional_props;
         unordered_map<string, string> prop_kv_rule_names;
-        for (const auto& [prop_name, prop_schema] : properties) {
+        for (const auto& kv : properties) {
+            const auto &prop_name = kv.first;
+            const auto &prop_schema = kv.second;
+
             string prop_rule_name = visit(prop_schema, name + (name.empty() ? "" : "-") + prop_name);
             prop_kv_rule_names[prop_name] = _add_rule(
                 name + (name.empty() ? "" : "-") + prop_name + "-kv",
@@ -446,7 +452,7 @@ class SchemaConverter {
 
 public:
     SchemaConverter(
-        const std::optional<std::function<json(const string&)>>& fetch_json,
+        const std::function<json(const string&)>& fetch_json,
         bool dotall)
           : _fetch_json(fetch_json), _dotall(dotall)
     {
@@ -469,14 +475,14 @@ class SchemaConverter {
                     string ref = n["$ref"];
                     if (_refs.find(ref) == _refs.end()) {
                         json target;
-                        if (ref.find("https://") == 0 && _fetch_json) {
+                        if (ref.find("https://") == 0) {
                             string base_url = ref.substr(0, ref.find('#'));
                             auto it = _refs.find(base_url);
                             if (it != _refs.end()) {
                                 target = it->second;
                             } else {
                                 // Fetch the referenced schema and resolve its refs
-                                auto referenced = _fetch_json.value()(ref);
+                                auto referenced = _fetch_json(ref);
                                 resolve_refs(referenced, base_url);
                                 _refs[base_url] = referenced;
                             }
@@ -504,8 +510,8 @@ class SchemaConverter {
                         _refs[ref] = target;
                     }
                 } else {
-                    for (auto& [key, value] : n.items()) {
-                        visit_refs(value);
+                    for (auto& kv : n.items()) {
+                        visit_refs(kv.value());
                     }
                 }
             }
@@ -628,15 +634,15 @@ class SchemaConverter {
         } else if ((schema_type.is_null() || schema_type == "string") && schema.contains("pattern")) {
             return _visit_pattern(schema["pattern"], rule_name);
         } else if (schema.empty() || (schema.size() == 1 && schema_type == "object")) {
-            for (const auto& [t, r] : PRIMITIVE_RULES) {
-                _add_rule(t, r);
+            for (const auto& kv : PRIMITIVE_RULES) {
+                _add_rule(kv.first, kv.second);
             }
             return "object";
         } else if ((schema_type.is_null() || schema_type == "string") && regex_match(schema_format, regex("^uuid[1-5]?$"))) {
             return _add_rule(rule_name == "root" ? "root" : schema_format, PRIMITIVE_RULES.at("uuid"));
         } else if ((schema_type.is_null() || schema_type == "string") && DATE_RULES.find(schema_format) != DATE_RULES.end()) {
-            for (const auto& [t, r] : DATE_RULES) {
-                _add_rule(t, r);
+            for (const auto& kv : DATE_RULES) {
+                _add_rule(kv.first, kv.second);
             }
             return schema_format + "-string";
         } else {
@@ -660,15 +666,15 @@ class SchemaConverter {
 
     string format_grammar() {
         stringstream ss;
-        for (const auto& [name, rule] : _rules) {
-            ss << name << " ::= " << rule << endl;
+        for (const auto& kv : _rules) {
+            ss << kv.first << " ::= " << kv.second << endl;
         }
         return ss.str();
     }
 };
 
 string json_schema_to_grammar(const json& schema) {
-  SchemaConverter converter(/* fetch_json= */ std::nullopt, /* dotall= */ false);
+  SchemaConverter converter([](const string&) { return json::object(); }, /* dotall= */ false);
   auto copy = schema;
   converter.resolve_refs(copy, "input");
   converter.visit(copy, "");
diff --git a/tests/test-json-schema-to-grammar.cpp b/tests/test-json-schema-to-grammar.cpp
index 3be705fe721cc..ab8cde5bdeec3 100755
--- a/tests/test-json-schema-to-grammar.cpp
+++ b/tests/test-json-schema-to-grammar.cpp
@@ -9,7 +9,6 @@
 #include <regex>
 
 using namespace std;
-namespace fs = std::filesystem;
 
 string INPUT_NAME(tmpnam(nullptr));
 string OUT_NAME(tmpnam(nullptr));

From bed826fa565de48e77268d0140db1b65d4389ff1 Mon Sep 17 00:00:00 2001
From: ochafik <ochafik@google.com>
Date: Tue, 12 Mar 2024 04:26:47 +0000
Subject: [PATCH 62/98] json: nit fixes

---
 Makefile                                          | 2 +-
 examples/json-schema-to-grammar.py                | 2 +-
 examples/server/CMakeLists.txt                    | 2 +-
 examples/server/json-schema-to-grammar.cpp        | 2 +-
 examples/server/public/json-schema-to-grammar.mjs | 2 +-
 tests/test-json-schema-to-grammar.cpp             | 6 +++---
 6 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/Makefile b/Makefile
index f828f6583336d..c9ec08564a2d3 100644
--- a/Makefile
+++ b/Makefile
@@ -656,7 +656,7 @@ grammar-parser.o: common/grammar-parser.cpp common/grammar-parser.h
 
 json-schema-to-grammar.o: examples/server/json-schema-to-grammar.cpp examples/server/json-schema-to-grammar.h
 	$(CXX) $(CXXFLAGS) -c $< -o $@
-	# $(CXX) $(CXXFLAGS) -c $< -o $(call GET_OBJ_FILE, $<)  -DLLAMA_BUILD_JSON_SCHEMA_CONVERTER=1 
+	# $(CXX) $(CXXFLAGS) -c $< -o $(call GET_OBJ_FILE, $<)  -DLLAMA_BUILD_JSON_SCHEMA_CONVERTER=1
 	# $(CXX) $(CXXFLAGS) $(filter-out %.h $<,$^) $(call GET_OBJ_FILE, $<) -o $@ $(LDFLAGS)
 
 train.o: common/train.cpp common/train.h
diff --git a/examples/json-schema-to-grammar.py b/examples/json-schema-to-grammar.py
index cda0837212a6b..0c9b54754fe0f 100755
--- a/examples/json-schema-to-grammar.py
+++ b/examples/json-schema-to-grammar.py
@@ -461,7 +461,7 @@ def get_recursive_refs(ks, first_is_optional):
                 rule += ' )'
             rule += ' )?'
 
-        rule += ' "}" space '
+        rule += ' "}" space'
 
         return rule
 
diff --git a/examples/server/CMakeLists.txt b/examples/server/CMakeLists.txt
index 1d42790b81a6a..12afac3a5b599 100644
--- a/examples/server/CMakeLists.txt
+++ b/examples/server/CMakeLists.txt
@@ -6,7 +6,7 @@ add_executable(${TARGET}
     server.cpp
     utils.hpp
     json.hpp
-    httplib.h 
+    httplib.h
     json-schema-to-grammar.cpp
     json-schema-to-grammar.h
 )
diff --git a/examples/server/json-schema-to-grammar.cpp b/examples/server/json-schema-to-grammar.cpp
index d0f37916c6104..919e26c350b42 100644
--- a/examples/server/json-schema-to-grammar.cpp
+++ b/examples/server/json-schema-to-grammar.cpp
@@ -445,7 +445,7 @@ class SchemaConverter {
             rule += " )?";
         }
 
-        rule += " \"}\" space ";
+        rule += " \"}\" space";
 
         return rule;
     }
diff --git a/examples/server/public/json-schema-to-grammar.mjs b/examples/server/public/json-schema-to-grammar.mjs
index eea837dc89619..4f921b688d28f 100644
--- a/examples/server/public/json-schema-to-grammar.mjs
+++ b/examples/server/public/json-schema-to-grammar.mjs
@@ -489,7 +489,7 @@ export class SchemaConverter {
       rule += ' )?';
     }
 
-    rule += ' "}" space ';
+    rule += ' "}" space';
 
     return rule;
   }
diff --git a/tests/test-json-schema-to-grammar.cpp b/tests/test-json-schema-to-grammar.cpp
index ab8cde5bdeec3..882ae0954564a 100755
--- a/tests/test-json-schema-to-grammar.cpp
+++ b/tests/test-json-schema-to-grammar.cpp
@@ -57,14 +57,14 @@ struct TestCase {
 static void run_py(const TestCase& tc) {
   cerr << "# Running Python " << tc.name.c_str() << endl;
   tc.prepare();
-  std::system(("python ./examples/json-schema-to-grammar.py " + INPUT_NAME + " > " + OUT_NAME).c_str());
+  assert(std::system(("python ./examples/json-schema-to-grammar.py " + INPUT_NAME + " > " + OUT_NAME).c_str()) == 0);
   tc.read_and_verify("Python");
 }
 
 static void run_mjs(const TestCase& tc) {
   cerr << "# Running MJS " << tc.name.c_str() << endl;
   tc.prepare();
-  std::system(("node ./tests/run-json-schema-to-grammar.mjs " + INPUT_NAME + " > " + OUT_NAME).c_str());
+  assert(std::system(("node ./tests/run-json-schema-to-grammar.mjs " + INPUT_NAME + " > " + OUT_NAME).c_str()) == 0);
   tc.read_and_verify("JavaScript");
 }
 
@@ -290,7 +290,7 @@ int main() {
       e-additionalProperties-value-item ::= "[" space string "," space number "]" space
       e-kv ::= "\"e\"" space ":" space e
       number ::= ("-"? ([0-9] | [1-9] [0-9]*)) ("." [0-9]+)? ([eE] [-+]? [0-9]+)? space
-      root ::= "{" space a-kv "," space b-kv ( "," space ( c-kv c-rest | d-kv d-rest | e-kv ) )? "}" space 
+      root ::= "{" space a-kv "," space b-kv ( "," space ( c-kv c-rest | d-kv d-rest | e-kv ) )? "}" space
       space ::= " "?
       string ::=  "\"" (
               [^"\\] |

From 59c899daace09a3b7dfa96ca22820863a2a1d960 Mon Sep 17 00:00:00 2001
From: ochafik <ochafik@google.com>
Date: Tue, 12 Mar 2024 04:32:24 +0000
Subject: [PATCH 63/98] json: dirty include for test

---
 Makefile                              | 2 +-
 tests/test-json-schema-to-grammar.cpp | 5 ++++-
 2 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/Makefile b/Makefile
index c9ec08564a2d3..08a7824c9c56c 100644
--- a/Makefile
+++ b/Makefile
@@ -850,7 +850,7 @@ tests/test-double-float: tests/test-double-float.cpp ggml.o $(OBJS)
 	$(CXX) $(CXXFLAGS) -c $< -o $(call GET_OBJ_FILE, $<)
 	$(CXX) $(CXXFLAGS) $(filter-out %.h $<,$^) $(call GET_OBJ_FILE, $<) -o $@ $(LDFLAGS)
 
-tests/test-json-schema-to-grammar: tests/test-json-schema-to-grammar.cpp json-schema-to-grammar.o
+tests/test-json-schema-to-grammar: tests/test-json-schema-to-grammar.cpp
 	$(CXX) $(CXXFLAGS) -c $< -o $(call GET_OBJ_FILE, $<)
 	$(CXX) $(CXXFLAGS) $(filter-out %.h $<,$^) $(call GET_OBJ_FILE, $<) -o $@ $(LDFLAGS)
 
diff --git a/tests/test-json-schema-to-grammar.cpp b/tests/test-json-schema-to-grammar.cpp
index 882ae0954564a..abfc184ec9546 100755
--- a/tests/test-json-schema-to-grammar.cpp
+++ b/tests/test-json-schema-to-grammar.cpp
@@ -2,12 +2,15 @@
 #undef NDEBUG
 #endif
 
-#include "../examples/server/json-schema-to-grammar.h"
 #include <iostream>
 #include <fstream>
 #include <sstream>
 #include <regex>
 
+// TODO: split this to some library? common would need json.hpp
+#include "../examples/server/json-schema-to-grammar.h"
+#include "../examples/server/json-schema-to-grammar.cpp"
+
 using namespace std;
 
 string INPUT_NAME(tmpnam(nullptr));

From f2165502c97f4a1e00e82d0bd7224b1f9bf3b229 Mon Sep 17 00:00:00 2001
From: ochafik <ochafik@google.com>
Date: Thu, 14 Mar 2024 23:51:44 +0000
Subject: [PATCH 64/98] json: fix zig build

---
 build.zig | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/build.zig b/build.zig
index 90609359bfe0b..b60a003c37d5d 100644
--- a/build.zig
+++ b/build.zig
@@ -122,6 +122,7 @@ pub fn build(b: *std.build.Builder) !void {
     const console = make.obj("console", "common/console.cpp");
     const sampling = make.obj("sampling", "common/sampling.cpp");
     const grammar_parser = make.obj("grammar-parser", "common/grammar-parser.cpp");
+    const json_schema_to_grammar = make.obj("json-schema-to-grammar", "examples/server/json-schema-to-grammar.cpp");
     const train = make.obj("train", "common/train.cpp");
     const clip = make.obj("clip", "examples/llava/clip.cpp");
     const llava = make.obj("llava", "examples/llava/llava.cpp");
@@ -133,7 +134,7 @@ pub fn build(b: *std.build.Builder) !void {
     _ = make.exe("finetune", "examples/finetune/finetune.cpp", &.{ ggml, ggml_alloc, ggml_backend, ggml_quants, llama, unicode, common, buildinfo, train });
     _ = make.exe("train-text-from-scratch", "examples/train-text-from-scratch/train-text-from-scratch.cpp", &.{ ggml, ggml_alloc, ggml_backend, ggml_quants, llama, unicode, common, buildinfo, train });
 
-    const server = make.exe("server", "examples/server/server.cpp", &.{ ggml, ggml_alloc, ggml_backend, ggml_quants, llama, unicode, common, buildinfo, sampling, grammar_parser, clip, llava });
+    const server = make.exe("server", "examples/server/server.cpp", &.{ ggml, ggml_alloc, ggml_backend, ggml_quants, llama, unicode, common, buildinfo, sampling, grammar_parser, json_schema_to_grammar, clip, llava });
     if (server.target.isWindows()) {
         server.linkSystemLibrary("ws2_32");
     }

From 5a7deb27d52ef2c2cfa970dba01cc0924e6d688a Mon Sep 17 00:00:00 2001
From: ochafik <ochafik@google.com>
Date: Fri, 15 Mar 2024 00:03:06 +0000
Subject: [PATCH 65/98] json: pass static command to std::system in tests
 (fixed temp files)

---
 .gitignore                            |  1 +
 tests/test-json-schema-to-grammar.cpp | 23 ++++++++++-------------
 2 files changed, 11 insertions(+), 13 deletions(-)

diff --git a/.gitignore b/.gitignore
index 1ad8d929b87e8..bdd72c3e13df6 100644
--- a/.gitignore
+++ b/.gitignore
@@ -11,6 +11,7 @@
 *.gcda
 *.dot
 *.bat
+*.tmp
 *.metallib
 .DS_Store
 .build/
diff --git a/tests/test-json-schema-to-grammar.cpp b/tests/test-json-schema-to-grammar.cpp
index abfc184ec9546..557234c6c82dd 100755
--- a/tests/test-json-schema-to-grammar.cpp
+++ b/tests/test-json-schema-to-grammar.cpp
@@ -13,9 +13,6 @@
 
 using namespace std;
 
-string INPUT_NAME(tmpnam(nullptr));
-string OUT_NAME(tmpnam(nullptr));
-
 static std::string trim(const std::string & source) {
     std::string s(source);
     s.erase(0,s.find_first_not_of(" \n\r\t"));
@@ -28,16 +25,16 @@ struct TestCase {
   string schema;
   string expected;
 
-  void prepare() const {
+  void write_input() const {
     ofstream f;
-    f.open(INPUT_NAME);
+    f.open("test-json-schema-input.tmp");
     f << schema.c_str();
     f.close();
   }
 
   void read_and_verify(const string& series) const {
     ostringstream actuals;
-    actuals << ifstream(OUT_NAME).rdbuf();
+    actuals << ifstream("test-grammar-output.tmp").rdbuf();
     auto actual = actuals.str();
     verify(series, actual);
   }
@@ -58,21 +55,21 @@ struct TestCase {
 
 
 static void run_py(const TestCase& tc) {
-  cerr << "# Running Python " << tc.name.c_str() << endl;
-  tc.prepare();
-  assert(std::system(("python ./examples/json-schema-to-grammar.py " + INPUT_NAME + " > " + OUT_NAME).c_str()) == 0);
+  cerr << "Testing JSON schema conversion: " << tc.name.c_str() << " (Python)" << endl;
+  tc.write_input();
+  assert(std::system("python ./examples/json-schema-to-grammar.py test-json-schema-input.tmp > test-grammar-output.tmp") == 0);
   tc.read_and_verify("Python");
 }
 
 static void run_mjs(const TestCase& tc) {
-  cerr << "# Running MJS " << tc.name.c_str() << endl;
-  tc.prepare();
-  assert(std::system(("node ./tests/run-json-schema-to-grammar.mjs " + INPUT_NAME + " > " + OUT_NAME).c_str()) == 0);
+  cerr << "Testing JSON schema conversion: " << tc.name.c_str() << " (JS)" << endl;
+  tc.write_input();
+  assert(std::system("node ./tests/run-json-schema-to-grammar.mjs test-json-schema-input.tmp > test-grammar-output.tmp") == 0);
   tc.read_and_verify("JavaScript");
 }
 
 static void run_cpp(const TestCase& tc) {
-  cerr << "# Running C++ " << tc.name.c_str() << endl;
+  cerr << "Testing JSON schema conversion: " << tc.name.c_str() << " (C++)" << endl;
   auto actual = json_schema_to_grammar(nlohmann::json::parse(tc.schema));
   tc.verify("C++", actual);
 }

From 3b3ad949f5b7cf02b5fe418d0f30cadd76a90e39 Mon Sep 17 00:00:00 2001
From: ochafik <ochafik@google.com>
Date: Fri, 15 Mar 2024 00:52:36 +0000
Subject: [PATCH 66/98] json: fix top-level $refs

---
 examples/json-schema-to-grammar.py            |  2 +-
 examples/server/json-schema-to-grammar.cpp    |  2 +-
 .../server/public/json-schema-to-grammar.mjs  |  2 +-
 tests/test-json-schema-to-grammar.cpp         | 66 ++++++++++++++++++-
 4 files changed, 68 insertions(+), 4 deletions(-)

diff --git a/examples/json-schema-to-grammar.py b/examples/json-schema-to-grammar.py
index 0c9b54754fe0f..cdbee7d39251f 100755
--- a/examples/json-schema-to-grammar.py
+++ b/examples/json-schema-to-grammar.py
@@ -303,7 +303,7 @@ def visit(self, schema, name):
         rule_name = name or 'root'
 
         if (ref := schema.get('$ref')) is not None:
-            return self._resolve_ref(ref)
+            return self._add_rule(rule_name, self._resolve_ref(ref))
 
         elif 'oneOf' in schema or 'anyOf' in schema:
             return self._add_rule(rule_name, self._generate_union_rule(name, schema.get('oneOf') or schema['anyOf']))
diff --git a/examples/server/json-schema-to-grammar.cpp b/examples/server/json-schema-to-grammar.cpp
index 919e26c350b42..054f49a5bc4f9 100644
--- a/examples/server/json-schema-to-grammar.cpp
+++ b/examples/server/json-schema-to-grammar.cpp
@@ -526,7 +526,7 @@ class SchemaConverter {
         string rule_name = name.empty() ? "root" : name;
 
         if (schema.contains("$ref")) {
-            return _resolve_ref(schema["$ref"]);
+            return _add_rule(rule_name, _resolve_ref(schema["$ref"]));
         } else if (schema.contains("oneOf") || schema.contains("anyOf")) {
             vector<json> alt_schemas = schema.contains("oneOf") ? schema["oneOf"].get<vector<json>>() : schema["anyOf"].get<vector<json>>();
             return _add_rule(rule_name, _generate_union_rule(name, alt_schemas));
diff --git a/examples/server/public/json-schema-to-grammar.mjs b/examples/server/public/json-schema-to-grammar.mjs
index 4f921b688d28f..862a9079f3b72 100644
--- a/examples/server/public/json-schema-to-grammar.mjs
+++ b/examples/server/public/json-schema-to-grammar.mjs
@@ -330,7 +330,7 @@ export class SchemaConverter {
 
     const ref = schema.$ref;
     if (ref !== undefined) {
-      return this._resolveRef(ref);
+      return this._addRule(ruleName, this._resolveRef(ref));
     } else if (schema.oneOf || schema.anyOf) {
       return this._addRule(ruleName, this._generateUnionRule(name, schema.oneOf || schema.anyOf));
     } else if (Array.isArray(schemaType)) {
diff --git a/tests/test-json-schema-to-grammar.cpp b/tests/test-json-schema-to-grammar.cpp
index 557234c6c82dd..e3819c112807e 100755
--- a/tests/test-json-schema-to-grammar.cpp
+++ b/tests/test-json-schema-to-grammar.cpp
@@ -84,7 +84,7 @@ int main() {
   run_all({
     .name = "exotic formats",
     .schema = R"""({
-      "prefixItems": [
+      "items": [
         { "format": "date" },
         { "format": "uuid" },
         { "format": "time" },
@@ -140,6 +140,37 @@ int main() {
     )"""
   });
 
+  run_all({
+    .name = "tuple1",
+    .schema = R"""({
+      "prefixItems": [{ "type": "string" }]
+    })""",
+    .expected = R"""(
+      root ::= "[" space string "]" space
+      space ::= " "?
+      string ::=  "\"" (
+              [^"\\] |
+              "\\" (["\\/bfnrt] | "u" [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F])
+            )* "\"" space
+    )"""
+  });
+
+  run_all({
+    .name = "tuple2",
+    .schema = R"""({
+      "prefixItems": [{ "type": "string" }, { "type": "number" }]
+    })""",
+    .expected = R"""(
+      number ::= ("-"? ([0-9] | [1-9] [0-9]*)) ("." [0-9]+)? ([eE] [-+]? [0-9]+)? space
+      root ::= "[" space string "," space number "]" space
+      space ::= " "?
+      string ::=  "\"" (
+              [^"\\] |
+              "\\" (["\\/bfnrt] | "u" [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F])
+            )* "\"" space
+    )"""
+  });
+
   run_all({
     .name = "number",
     .schema = R"""({
@@ -298,4 +329,37 @@ int main() {
             )* "\"" space
     )"""
   });
+  
+  run_all({
+    .name = "top-level $ref",
+    .schema = R"""({
+      "$schema": "http://json-schema.org/draft-07/schema#",
+      "$ref": "#/definitions/MyType",
+      "definitions": {
+        "MyType": {
+          "type": "object",
+          "properties": {
+            "a": {
+              "type": "string"
+            }
+          },
+          "required": [
+            "a"
+          ],
+          "additionalProperties": false
+        }
+      }
+    })""",
+    .expected = R"""(
+      MyType ::= "{" space MyType-a-kv "}" space
+      MyType-a-kv ::= "\"a\"" space ":" space string
+      root ::= MyType
+      space ::= " "?
+      string ::=  "\"" (
+              [^"\\] |
+              "\\" (["\\/bfnrt] | "u" [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F])
+            )* "\"" space
+    )"""
+  });
+
 }

From 235ff6858d7047f0561e0944d9d0111a22ac3221 Mon Sep 17 00:00:00 2001
From: ochafik <ochafik@google.com>
Date: Fri, 15 Mar 2024 10:03:57 +0000
Subject: [PATCH 67/98] json: don't use c++20 designated initializers

---
 tests/test-json-schema-to-grammar.cpp | 84 +++++++++++++--------------
 1 file changed, 42 insertions(+), 42 deletions(-)

diff --git a/tests/test-json-schema-to-grammar.cpp b/tests/test-json-schema-to-grammar.cpp
index e3819c112807e..38a63fbb338b6 100755
--- a/tests/test-json-schema-to-grammar.cpp
+++ b/tests/test-json-schema-to-grammar.cpp
@@ -82,8 +82,8 @@ static void run_all(const TestCase& tc) {
 
 int main() {
   run_all({
-    .name = "exotic formats",
-    .schema = R"""({
+    "exotic formats",
+    R"""({
       "items": [
         { "format": "date" },
         { "format": "uuid" },
@@ -91,7 +91,7 @@ int main() {
         { "format": "date-time" }
       ]
     })""",
-    .expected = R"""(
+    R"""(
       date ::= [0-9] [0-9] [0-9] [0-9] "-" ( "0" [1-9] | "1" [0-2] ) "-" ( [0-2] [0-9] | "3" [0-1] )
       date-string ::= "\"" date "\"" space
       date-time ::= date "T" time
@@ -105,11 +105,11 @@ int main() {
   });
 
   run_all({
-    .name = "string",
-    .schema = R"""({
+    "string",
+    R"""({
       "type": "string"
     })""",
-    .expected = R"""(
+    R"""(
       root ::=  "\"" (
               [^"\\] |
               "\\" (["\\/bfnrt] | "u" [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F])
@@ -119,33 +119,33 @@ int main() {
   });
 
   run_all({
-    .name = "boolean",
-    .schema = R"""({
+    "boolean",
+    R"""({
       "type": "boolean"
     })""",
-    .expected = R"""(
+    R"""(
       root ::= ("true" | "false") space
       space ::= " "?
     )"""
   });
 
   run_all({
-    .name = "integer",
-    .schema = R"""({
+    "integer",
+    R"""({
       "type": "integer"
     })""",
-    .expected = R"""(
+    R"""(
       root ::= ("-"? ([0-9] | [1-9] [0-9]*)) space
       space ::= " "?
     )"""
   });
 
   run_all({
-    .name = "tuple1",
-    .schema = R"""({
+    "tuple1",
+    R"""({
       "prefixItems": [{ "type": "string" }]
     })""",
-    .expected = R"""(
+    R"""(
       root ::= "[" space string "]" space
       space ::= " "?
       string ::=  "\"" (
@@ -156,11 +156,11 @@ int main() {
   });
 
   run_all({
-    .name = "tuple2",
-    .schema = R"""({
+    "tuple2",
+    R"""({
       "prefixItems": [{ "type": "string" }, { "type": "number" }]
     })""",
-    .expected = R"""(
+    R"""(
       number ::= ("-"? ([0-9] | [1-9] [0-9]*)) ("." [0-9]+)? ([eE] [-+]? [0-9]+)? space
       root ::= "[" space string "," space number "]" space
       space ::= " "?
@@ -172,25 +172,25 @@ int main() {
   });
 
   run_all({
-    .name = "number",
-    .schema = R"""({
+    "number",
+    R"""({
       "type": "number"
     })""",
-    .expected = R"""(
+    R"""(
       root ::= ("-"? ([0-9] | [1-9] [0-9]*)) ("." [0-9]+)? ([eE] [-+]? [0-9]+)? space
       space ::= " "?
     )"""
   });
 
   run_all({
-    .name = "minItems",
-    .schema = R"""({
+    "minItems",
+    R"""({
       "items": {
         "type": "boolean"
       },
       "minItems": 2
     })""",
-    .expected = R"""(
+    R"""(
       boolean ::= ("true" | "false") space
       root ::= "[" space boolean ( "," space boolean )( "," space boolean )* "]" space
       space ::= " "?
@@ -198,14 +198,14 @@ int main() {
   });
 
   run_all({
-    .name = "maxItems 1",
-    .schema = R"""({
+    "maxItems 1",
+    R"""({
       "items": {
         "type": "boolean"
       },
       "maxItems": 1
     })""",
-    .expected = R"""(
+    R"""(
       boolean ::= ("true" | "false") space
       root ::= "[" space ( boolean  )? "]" space
       space ::= " "?
@@ -213,14 +213,14 @@ int main() {
   });
 
   run_all({
-    .name = "maxItems 2",
-    .schema = R"""({
+    "maxItems 2",
+    R"""({
       "items": {
         "type": "boolean"
       },
       "maxItems": 2
     })""",
-    .expected = R"""(
+    R"""(
       boolean ::= ("true" | "false") space
       root ::= "[" space ( boolean ( "," space boolean )? )? "]" space
       space ::= " "?
@@ -228,15 +228,15 @@ int main() {
   });
 
   run_all({
-    .name = "min + maxItems",
-    .schema = R"""({
+    "min + maxItems",
+    R"""({
       "items": {
         "type": ["number", "integer"]
       },
       "minItems": 3,
       "maxItems": 5
     })""",
-    .expected = R"""(
+    R"""(
       integer ::= ("-"? ([0-9] | [1-9] [0-9]*)) space
       item ::= number | integer
       number ::= ("-"? ([0-9] | [1-9] [0-9]*)) ("." [0-9]+)? ([eE] [-+]? [0-9]+)? space
@@ -246,12 +246,12 @@ int main() {
   });
 
   run_all({
-    .name = "regexp",
-    .schema = R"""({
+    "regexp",
+    R"""({
       "type": "string",
       "pattern": "^(\\([0-9]{1,3}\\))?[0-9]{3}-[0-9]{4} and...$"
     })""",
-    .expected = R"""(
+    R"""(
       dot ::= [\U00000000-\x09\x0B\x0C\x0E-\U0010FFFF]
       root ::= ("(" root-1 root-1? root-1? ")")? root-1 root-1 root-1 "-" root-1 root-1 root-1 root-1 " and" dot dot dot
       root-1 ::= [0-9]
@@ -260,8 +260,8 @@ int main() {
   });
 
   run_all({
-    .name = "optionals",
-    .schema = R"""({
+    "optionals",
+    R"""({
       "$schema": "http://json-schema.org/draft-07/schema#",
       "type": "object",
       "properties": {
@@ -307,7 +307,7 @@ int main() {
       "additionalProperties": false,
       "definitions": {}
     })""",
-    .expected = R"""(
+    R"""(
       a-kv ::= "\"a\"" space ":" space string
       b-kv ::= "\"b\"" space ":" space string
       c ::= number | string
@@ -331,8 +331,8 @@ int main() {
   });
   
   run_all({
-    .name = "top-level $ref",
-    .schema = R"""({
+    "top-level $ref",
+    R"""({
       "$schema": "http://json-schema.org/draft-07/schema#",
       "$ref": "#/definitions/MyType",
       "definitions": {
@@ -350,7 +350,7 @@ int main() {
         }
       }
     })""",
-    .expected = R"""(
+    R"""(
       MyType ::= "{" space MyType-a-kv "}" space
       MyType-a-kv ::= "\"a\"" space ":" space string
       root ::= MyType

From daceced65eb3124618d7cc8897c62bbef80deb6a Mon Sep 17 00:00:00 2001
From: ochafik <ochafik@google.com>
Date: Fri, 15 Mar 2024 10:07:20 +0000
Subject: [PATCH 68/98] nit

---
 tests/test-json-schema-to-grammar.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tests/test-json-schema-to-grammar.cpp b/tests/test-json-schema-to-grammar.cpp
index 38a63fbb338b6..8d0f015b5429c 100755
--- a/tests/test-json-schema-to-grammar.cpp
+++ b/tests/test-json-schema-to-grammar.cpp
@@ -329,7 +329,7 @@ int main() {
             )* "\"" space
     )"""
   });
-  
+
   run_all({
     "top-level $ref",
     R"""({

From 5714487830ea0bbb767745a824d3f8a7df77ad94 Mon Sep 17 00:00:00 2001
From: ochafik <ochafik@google.com>
Date: Fri, 15 Mar 2024 10:35:34 +0000
Subject: [PATCH 69/98] json: basic support for reserved names
 `{number:{number:{root:number}}}`

---
 examples/json-schema-to-grammar.py            |  4 +-
 examples/server/json-schema-to-grammar.cpp    | 12 ++-
 .../server/public/json-schema-to-grammar.mjs  |  4 +-
 tests/test-json-schema-to-grammar.cpp         | 98 ++++++++++++++++++-
 4 files changed, 113 insertions(+), 5 deletions(-)

diff --git a/examples/json-schema-to-grammar.py b/examples/json-schema-to-grammar.py
index cdbee7d39251f..2a7c78afec8d8 100755
--- a/examples/json-schema-to-grammar.py
+++ b/examples/json-schema-to-grammar.py
@@ -35,6 +35,8 @@
     'date-time-string': '"\\"" date-time "\\"" space',
 }
 
+RESERVED_NAMES = set(["root", *PRIMITIVE_RULES.keys(), *DATE_RULES.keys()])
+
 INVALID_RULE_CHARS_RE = re.compile(r'[^a-zA-Z0-9-]+')
 GRAMMAR_LITERAL_ESCAPE_RE = re.compile(r'[\r\n"]')
 GRAMMAR_RANGE_LITERAL_ESCAPE_RE = re.compile(r'[\r\n"\]\-\\]')
@@ -300,7 +302,7 @@ def _resolve_ref(self, ref):
     def visit(self, schema, name):
         schema_type = schema.get('type')
         schema_format = schema.get('format')
-        rule_name = name or 'root'
+        rule_name = name + '-' if name in RESERVED_NAMES else name or 'root'
 
         if (ref := schema.get('$ref')) is not None:
             return self._add_rule(rule_name, self._resolve_ref(ref))
diff --git a/examples/server/json-schema-to-grammar.cpp b/examples/server/json-schema-to-grammar.cpp
index 054f49a5bc4f9..059ffd7ed3527 100644
--- a/examples/server/json-schema-to-grammar.cpp
+++ b/examples/server/json-schema-to-grammar.cpp
@@ -43,6 +43,16 @@ unordered_map<string, string> DATE_RULES = {
     {"date-time-string", "\"\\\"\" date-time \"\\\"\" space"}
 };
 
+static bool is_reserved_name(const string& name) {
+    static std::unordered_set<std::string> RESERVED_NAMES;
+    if (RESERVED_NAMES.empty()) {
+        RESERVED_NAMES.insert("root");
+        for (const auto &p : PRIMITIVE_RULES) RESERVED_NAMES.insert(p.first);
+        for (const auto &p : DATE_RULES) RESERVED_NAMES.insert(p.first);
+    }
+    return RESERVED_NAMES.find(name) != RESERVED_NAMES.end();
+}
+
 regex INVALID_RULE_CHARS_RE("[^a-zA-Z0-9-]+");
 regex GRAMMAR_LITERAL_ESCAPE_RE("[\r\n\"]");
 regex GRAMMAR_RANGE_LITERAL_ESCAPE_RE("[\r\n\"\\]\\-\\\\]");
@@ -523,7 +533,7 @@ class SchemaConverter {
     string visit(const json& schema, const string& name) {
         json schema_type = schema.contains("type") ? schema["type"] : json();
         string schema_format = schema.contains("format") ? schema["format"].get<string>() : "";
-        string rule_name = name.empty() ? "root" : name;
+        string rule_name = is_reserved_name(name) ? name + "-" : name.empty() ? "root" : name;
 
         if (schema.contains("$ref")) {
             return _add_rule(rule_name, _resolve_ref(schema["$ref"]));
diff --git a/examples/server/public/json-schema-to-grammar.mjs b/examples/server/public/json-schema-to-grammar.mjs
index 862a9079f3b72..6046804881e9c 100644
--- a/examples/server/public/json-schema-to-grammar.mjs
+++ b/examples/server/public/json-schema-to-grammar.mjs
@@ -26,6 +26,8 @@ const DATE_RULES = {
     'date-time-string': '"\\"" date-time "\\"" space',
 };
 
+const RESERVED_NAMES = {'root': true, ...PRIMITIVE_RULES, ...DATE_RULES};
+
 const INVALID_RULE_CHARS_RE = /[^\dA-Za-z-]+/g;
 const GRAMMAR_LITERAL_ESCAPE_RE = /[\n\r"]/g;
 const GRAMMAR_RANGE_LITERAL_ESCAPE_RE = /[\n\r"\]\-\\]/g;
@@ -326,7 +328,7 @@ export class SchemaConverter {
   visit(schema, name) {
     const schemaType = schema.type;
     const schemaFormat = schema.format;
-    const ruleName = name || 'root';
+    const ruleName = name in RESERVED_NAMES ? name + '-' : name == '' ? 'root' : name;
 
     const ref = schema.$ref;
     if (ref !== undefined) {
diff --git a/tests/test-json-schema-to-grammar.cpp b/tests/test-json-schema-to-grammar.cpp
index 8d0f015b5429c..9e2fa95215d0e 100755
--- a/tests/test-json-schema-to-grammar.cpp
+++ b/tests/test-json-schema-to-grammar.cpp
@@ -259,10 +259,61 @@ int main() {
     )"""
   });
 
+  run_all({
+    "object w/ required props",
+    R"""({
+      "type": "object",
+      "properties": {
+        "a": {
+          "type": "string"
+        },
+        "b": {
+          "type": "string"
+        }
+      },
+      "required": [
+        "a",
+        "b"
+      ],
+      "additionalProperties": false,
+      "definitions": {}
+    })""",
+    R"""(
+      a-kv ::= "\"a\"" space ":" space string
+      b-kv ::= "\"b\"" space ":" space string
+      root ::= "{" space a-kv "," space b-kv "}" space
+      space ::= " "?
+      string ::=  "\"" (
+              [^"\\] |
+              "\\" (["\\/bfnrt] | "u" [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F])
+            )* "\"" space
+    )"""
+  });
+
+  run_all({
+    "1 optional",
+    R"""({
+      "properties": {
+        "a": {
+          "type": "string"
+        }
+      },
+      "additionalProperties": false
+    })""",
+    R"""(
+      a-kv ::= "\"a\"" space ":" space string
+      root ::= "{" space  (a-kv )? "}" space
+      space ::= " "?
+      string ::=  "\"" (
+              [^"\\] |
+              "\\" (["\\/bfnrt] | "u" [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F])
+            )* "\"" space
+    )"""
+  });
+
   run_all({
     "optionals",
     R"""({
-      "$schema": "http://json-schema.org/draft-07/schema#",
       "type": "object",
       "properties": {
         "a": {
@@ -333,7 +384,6 @@ int main() {
   run_all({
     "top-level $ref",
     R"""({
-      "$schema": "http://json-schema.org/draft-07/schema#",
       "$ref": "#/definitions/MyType",
       "definitions": {
         "MyType": {
@@ -362,4 +412,48 @@ int main() {
     )"""
   });
 
+  run_all({
+    "conflicting names",
+    R"""({
+      "type": "object",
+      "properties": {
+        "number": {
+          "type": "object",
+          "properties": {
+            "number": {
+              "type": "object",
+              "properties": {
+                "root": {
+                  "type": "number"
+                }
+              },
+              "required": [
+                "root"
+              ],
+              "additionalProperties": false
+            }
+          },
+          "required": [
+            "number"
+          ],
+          "additionalProperties": false
+        }
+      },
+      "required": [
+        "number"
+      ],
+      "additionalProperties": false,
+      "definitions": {}
+    })""",
+    R"""(
+      number ::= ("-"? ([0-9] | [1-9] [0-9]*)) ("." [0-9]+)? ([eE] [-+]? [0-9]+)? space
+      number- ::= "{" space number-number-kv "}" space
+      number-kv ::= "\"number\"" space ":" space number-
+      number-number ::= "{" space number-number-root-kv "}" space
+      number-number-kv ::= "\"number\"" space ":" space number-number
+      number-number-root-kv ::= "\"root\"" space ":" space number
+      root ::= "{" space number-kv "}" space
+      space ::= " "?
+    )"""
+  });
 }

From af31aa20b43bf35f37c993661ba2b204935bc91f Mon Sep 17 00:00:00 2001
From: ochafik <ochafik@google.com>
Date: Sat, 16 Mar 2024 00:19:44 +0000
Subject: [PATCH 70/98] Revamp test cmake to allow args (WORKING_DIRECTORY
 needed for JSON test)

---
 tests/CMakeLists.txt | 108 +++++++++++++++++++++++--------------------
 1 file changed, 57 insertions(+), 51 deletions(-)

diff --git a/tests/CMakeLists.txt b/tests/CMakeLists.txt
index 4389f4a16e99f..362ee32d2f5ce 100644
--- a/tests/CMakeLists.txt
+++ b/tests/CMakeLists.txt
@@ -1,68 +1,74 @@
-function(llama_build_executable source)
-    get_filename_component(TEST_TARGET ${source} NAME_WE)
-    add_executable(${TEST_TARGET} ${source} get-model.cpp)
-    install(TARGETS ${TEST_TARGET} RUNTIME)
-    target_link_libraries(${TEST_TARGET} PRIVATE common)
-endfunction()
+# Builds and runs a test source file.
+# Optional args:
+# - NAME: name of the executable & test target (defaults to the source file name without extension)
+# - LABEL: label for the test (defaults to main)
+# - ARGS: arguments to pass to the test executable
+# - WORKING_DIRECTORY
+function(llama_test source)
+    include(CMakeParseArguments)
+    set(options)
+    set(oneValueArgs NAME LABEL WORKING_DIRECTORY)
+    set(multiValueArgs ARGS)
+    cmake_parse_arguments(LLAMA_TEST "${options}" "${oneValueArgs}" "${multiValueArgs}" ${ARGN})
 
-function(llama_test_executable name source)
-    get_filename_component(TEST_TARGET ${source} NAME_WE)
-    add_test(NAME ${name} COMMAND $<TARGET_FILE:${TEST_TARGET}> ${ARGN})
-    set_property(TEST ${name} PROPERTY LABELS "main")
-endfunction()
+    if (NOT DEFINED LLAMA_TEST_LABEL)
+        set(LLAMA_TEST_LABEL "main")
+    endif()
+    if (NOT DEFINED LLAMA_TEST_WORKING_DIRECTORY)
+        set(LLAMA_TEST_WORKING_DIRECTORY .)
+    endif()
+    if (DEFINED LLAMA_TEST_NAME)
+        set(TEST_TARGET ${LLAMA_TEST_NAME})
+    else()
+        get_filename_component(TEST_TARGET ${source} NAME_WE)
+    endif()
 
-function(llama_build_and_test_executable source)
-    llama_build_and_test_executable_with_label(${source} "main")
-endfunction()
-
-function(llama_build_and_test_executable_with_label source label)
-    get_filename_component(TEST_TARGET ${source} NAME_WE)
     add_executable(${TEST_TARGET} ${source} get-model.cpp)
     install(TARGETS ${TEST_TARGET} RUNTIME)
     target_link_libraries(${TEST_TARGET} PRIVATE common)
-    add_test(NAME ${TEST_TARGET} COMMAND $<TARGET_FILE:${TEST_TARGET}> ${ARGN})
-    set_property(TEST ${TEST_TARGET} PROPERTY LABELS ${label})
-endfunction()
+    add_test(
+        NAME ${TEST_TARGET}
+        WORKING_DIRECTORY ${LLAMA_TEST_WORKING_DIRECTORY}
+        COMMAND $<TARGET_FILE:${TEST_TARGET}>
+        ${LLAMA_TEST_ARGS})
 
-# llama_build_and_test_executable(test-double-float.cpp) # SLOW
-llama_build_and_test_executable(test-quantize-fns.cpp)
-llama_build_and_test_executable(test-quantize-perf.cpp)
-llama_build_and_test_executable(test-sampling.cpp)
-llama_build_and_test_executable(test-chat-template.cpp)
+    set_property(TEST ${TEST_TARGET} PROPERTY LABELS ${LLAMA_TEST_LABEL})
+endfunction()
 
-llama_build_executable(test-tokenizer-0-llama.cpp)
-llama_test_executable (test-tokenizer-0-llama test-tokenizer-0-llama.cpp ${CMAKE_CURRENT_SOURCE_DIR}/../models/ggml-vocab-llama.gguf)
+# llama_test(test-double-float.cpp) # SLOW
+llama_test(test-quantize-fns.cpp)
+llama_test(test-quantize-perf.cpp)
+llama_test(test-sampling.cpp)
+llama_test(test-chat-template.cpp)
 
-llama_build_executable(test-tokenizer-0-falcon.cpp)
-llama_test_executable (test-tokenizer-0-falcon test-tokenizer-0-falcon.cpp ${CMAKE_CURRENT_SOURCE_DIR}/../models/ggml-vocab-falcon.gguf)
+llama_test(test-tokenizer-0-llama.cpp  NAME test-tokenizer-0-llama            ARGS ${CMAKE_CURRENT_SOURCE_DIR}/../models/ggml-vocab-llama.gguf)
+llama_test(test-tokenizer-0-falcon.cpp NAME test-tokenizer-0-falcon           ARGS ${CMAKE_CURRENT_SOURCE_DIR}/../models/ggml-vocab-falcon.gguf)
 
-llama_build_executable(test-tokenizer-1-llama.cpp)
-llama_test_executable (test-tokenizer-1-llama    test-tokenizer-1-llama.cpp ${CMAKE_CURRENT_SOURCE_DIR}/../models/ggml-vocab-llama.gguf)
-llama_test_executable (test-tokenizer-1-baichuan test-tokenizer-1-llama.cpp ${CMAKE_CURRENT_SOURCE_DIR}/../models/ggml-vocab-baichuan.gguf)
+llama_test(test-tokenizer-1-llama.cpp  NAME test-tokenizer-1-llama            ARGS ${CMAKE_CURRENT_SOURCE_DIR}/../models/ggml-vocab-llama.gguf)
+llama_test(test-tokenizer-1-llama.cpp  NAME test-tokenizer-1-baichuan         ARGS ${CMAKE_CURRENT_SOURCE_DIR}/../models/ggml-vocab-baichuan.gguf)
 
-llama_build_executable(test-tokenizer-1-bpe.cpp)
-llama_test_executable (test-tokenizer-1-falcon           test-tokenizer-1-bpe.cpp ${CMAKE_CURRENT_SOURCE_DIR}/../models/ggml-vocab-falcon.gguf)
-llama_test_executable (test-tokenizer-1-aquila           test-tokenizer-1-bpe.cpp ${CMAKE_CURRENT_SOURCE_DIR}/../models/ggml-vocab-aquila.gguf)
-llama_test_executable (test-tokenizer-1-mpt              test-tokenizer-1-bpe.cpp ${CMAKE_CURRENT_SOURCE_DIR}/../models/ggml-vocab-mpt.gguf)
-llama_test_executable (test-tokenizer-1-stablelm-3b-4e1t test-tokenizer-1-bpe.cpp ${CMAKE_CURRENT_SOURCE_DIR}/../models/ggml-vocab-stablelm-3b-4e1t.gguf)
-llama_test_executable (test-tokenizer-1-gpt-neox         test-tokenizer-1-bpe.cpp ${CMAKE_CURRENT_SOURCE_DIR}/../models/ggml-vocab-gpt-neox.gguf)
-llama_test_executable (test-tokenizer-1-refact           test-tokenizer-1-bpe.cpp ${CMAKE_CURRENT_SOURCE_DIR}/../models/ggml-vocab-refact.gguf)
-llama_test_executable (test-tokenizer-1-starcoder        test-tokenizer-1-bpe.cpp ${CMAKE_CURRENT_SOURCE_DIR}/../models/ggml-vocab-starcoder.gguf)
-llama_test_executable (test-tokenizer-1-gpt2             test-tokenizer-1-bpe.cpp ${CMAKE_CURRENT_SOURCE_DIR}/../models/ggml-vocab-gpt2.gguf)
-# llama_test_executable (test-tokenizer-1-bloom test-tokenizer-1-bpe.cpp ${CMAKE_CURRENT_SOURCE_DIR}/../models/ggml-vocab-bloom.gguf) # BIG
+llama_test(test-tokenizer-1-bpe.cpp    NAME test-tokenizer-1-falcon           ARGS ${CMAKE_CURRENT_SOURCE_DIR}/../models/ggml-vocab-falcon.gguf)
+llama_test(test-tokenizer-1-bpe.cpp    NAME test-tokenizer-1-aquila           ARGS ${CMAKE_CURRENT_SOURCE_DIR}/../models/ggml-vocab-aquila.gguf)
+llama_test(test-tokenizer-1-bpe.cpp    NAME test-tokenizer-1-mpt              ARGS ${CMAKE_CURRENT_SOURCE_DIR}/../models/ggml-vocab-mpt.gguf)
+llama_test(test-tokenizer-1-bpe.cpp    NAME test-tokenizer-1-stablelm-3b-4e1t ARGS ${CMAKE_CURRENT_SOURCE_DIR}/../models/ggml-vocab-stablelm-3b-4e1t.gguf)
+llama_test(test-tokenizer-1-bpe.cpp    NAME test-tokenizer-1-gpt-neox         ARGS ${CMAKE_CURRENT_SOURCE_DIR}/../models/ggml-vocab-gpt-neox.gguf)
+llama_test(test-tokenizer-1-bpe.cpp    NAME test-tokenizer-1-refact           ARGS ${CMAKE_CURRENT_SOURCE_DIR}/../models/ggml-vocab-refact.gguf)
+llama_test(test-tokenizer-1-bpe.cpp    NAME test-tokenizer-1-starcoder        ARGS ${CMAKE_CURRENT_SOURCE_DIR}/../models/ggml-vocab-starcoder.gguf)
+llama_test(test-tokenizer-1-bpe.cpp    NAME test-tokenizer-1-gpt2             ARGS ${CMAKE_CURRENT_SOURCE_DIR}/../models/ggml-vocab-gpt2.gguf)
+#llama_test(test-tokenizer-1-bpe.cpp    NAME test-tokenizer-1-bloom            ARGS ${CMAKE_CURRENT_SOURCE_DIR}/../models/ggml-vocab-bloom.gguf) # BIG
 
-llama_build_and_test_executable(test-grammar-parser.cpp)
-llama_build_and_test_executable(test-llama-grammar.cpp)
-llama_build_and_test_executable(test-grad0.cpp)
-# llama_build_and_test_executable(test-opt.cpp) # SLOW
-llama_build_and_test_executable(test-backend-ops.cpp)
+llama_test(test-grammar-parser.cpp)
+llama_test(test-llama-grammar.cpp)
+llama_test(test-grad0.cpp)
+# llama_test(test-opt.cpp) # SLOW
+llama_test(test-backend-ops.cpp)
 
-llama_build_and_test_executable(test-rope.cpp)
+llama_test(test-rope.cpp)
 
-llama_build_and_test_executable(test-json-schema-to-grammar.cpp)
+llama_test(test-model-load-cancel.cpp      LABEL "model")
+llama_test(test-autorelease.cpp            LABEL "model")
 
-llama_build_and_test_executable_with_label(test-model-load-cancel.cpp "model")
-llama_build_and_test_executable_with_label(test-autorelease.cpp "model")
+llama_test(test-json-schema-to-grammar.cpp WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/..)
 
 # dummy executable - not installed
 get_filename_component(TEST_TARGET test-c.c NAME_WE)

From 842eb834c5e5b98059533580c1e4bd9dd70f78c7 Mon Sep 17 00:00:00 2001
From: ochafik <ochafik@google.com>
Date: Sat, 16 Mar 2024 00:36:36 +0000
Subject: [PATCH 71/98] json: re-ran server deps.sh

---
 examples/server/index.js.hpp                  | 1680 +++++-----
 .../server/json-schema-to-grammar.mjs.hpp     | 2808 +++++++++--------
 examples/server/public/index.js               |    2 +-
 3 files changed, 2265 insertions(+), 2225 deletions(-)

diff --git a/examples/server/index.js.hpp b/examples/server/index.js.hpp
index e09b3c8c59060..256aab5e5930e 100644
--- a/examples/server/index.js.hpp
+++ b/examples/server/index.js.hpp
@@ -12,7 +12,7 @@ unsigned char index_js[] = {
   0x74, 0x2c, 0x6e, 0x3d, 0x21, 0x31, 0x3b, 0x77, 0x68, 0x69, 0x6c, 0x65,
   0x28, 0x76, 0x6f, 0x69, 0x64, 0x20, 0x30, 0x21, 0x3d, 0x3d, 0x6f, 0x29,
   0x7b, 0x6c, 0x65, 0x74, 0x20, 0x5f, 0x3d, 0x6f, 0x3b, 0x6f, 0x3d, 0x76,
-  0x6f, 0x69, 0x64, 0x20, 0x30, 0x3b, 0x73, 0x2b, 0x2b, 0x3b, 0x77, 0x68,
+  0x6f, 0x69, 0x64, 0x20, 0x30, 0x3b, 0x6c, 0x2b, 0x2b, 0x3b, 0x77, 0x68,
   0x69, 0x6c, 0x65, 0x28, 0x76, 0x6f, 0x69, 0x64, 0x20, 0x30, 0x21, 0x3d,
   0x3d, 0x5f, 0x29, 0x7b, 0x63, 0x6f, 0x6e, 0x73, 0x74, 0x20, 0x69, 0x3d,
   0x5f, 0x2e, 0x6f, 0x3b, 0x5f, 0x2e, 0x6f, 0x3d, 0x76, 0x6f, 0x69, 0x64,
@@ -21,7 +21,7 @@ unsigned char index_js[] = {
   0x70, 0x28, 0x5f, 0x29, 0x29, 0x74, 0x72, 0x79, 0x7b, 0x5f, 0x2e, 0x63,
   0x28, 0x29, 0x7d, 0x63, 0x61, 0x74, 0x63, 0x68, 0x28, 0x65, 0x29, 0x7b,
   0x69, 0x66, 0x28, 0x21, 0x6e, 0x29, 0x7b, 0x74, 0x3d, 0x65, 0x3b, 0x6e,
-  0x3d, 0x21, 0x30, 0x7d, 0x7d, 0x5f, 0x3d, 0x69, 0x7d, 0x7d, 0x73, 0x3d,
+  0x3d, 0x21, 0x30, 0x7d, 0x7d, 0x5f, 0x3d, 0x69, 0x7d, 0x7d, 0x6c, 0x3d,
   0x30, 0x3b, 0x66, 0x2d, 0x2d, 0x3b, 0x69, 0x66, 0x28, 0x6e, 0x29, 0x74,
   0x68, 0x72, 0x6f, 0x77, 0x20, 0x74, 0x7d, 0x66, 0x75, 0x6e, 0x63, 0x74,
   0x69, 0x6f, 0x6e, 0x20, 0x5f, 0x28, 0x74, 0x29, 0x7b, 0x69, 0x66, 0x28,
@@ -37,8 +37,8 @@ unsigned char index_js[] = {
   0x30, 0x3b, 0x72, 0x2b, 0x2b, 0x3b, 0x74, 0x72, 0x79, 0x7b, 0x72, 0x65,
   0x74, 0x75, 0x72, 0x6e, 0x20, 0x74, 0x28, 0x29, 0x7d, 0x66, 0x69, 0x6e,
   0x61, 0x6c, 0x6c, 0x79, 0x7b, 0x72, 0x2d, 0x2d, 0x3b, 0x69, 0x3d, 0x6e,
-  0x7d, 0x7d, 0x6c, 0x65, 0x74, 0x20, 0x66, 0x3d, 0x30, 0x2c, 0x73, 0x3d,
-  0x30, 0x2c, 0x6c, 0x3d, 0x30, 0x3b, 0x66, 0x75, 0x6e, 0x63, 0x74, 0x69,
+  0x7d, 0x7d, 0x6c, 0x65, 0x74, 0x20, 0x66, 0x3d, 0x30, 0x2c, 0x6c, 0x3d,
+  0x30, 0x2c, 0x73, 0x3d, 0x30, 0x3b, 0x66, 0x75, 0x6e, 0x63, 0x74, 0x69,
   0x6f, 0x6e, 0x20, 0x63, 0x28, 0x74, 0x29, 0x7b, 0x69, 0x66, 0x28, 0x76,
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@@ -141,9 +141,9 @@ unsigned char index_js[] = {
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+  0x28, 0x6c, 0x3e, 0x31, 0x30, 0x30, 0x29, 0x74, 0x28, 0x29, 0x3b, 0x74,
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+  0x2e, 0x69, 0x2b, 0x2b, 0x3b, 0x73, 0x2b, 0x2b, 0x3b, 0x66, 0x2b, 0x2b,
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@@ -191,7 +191,7 @@ unsigned char index_js[] = {
   0x6f, 0x69, 0x64, 0x20, 0x30, 0x29, 0x3b, 0x74, 0x68, 0x69, 0x73, 0x2e,
   0x78, 0x3d, 0x74, 0x3b, 0x74, 0x68, 0x69, 0x73, 0x2e, 0x73, 0x3d, 0x76,
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+  0x3d, 0x73, 0x2d, 0x31, 0x3b, 0x74, 0x68, 0x69, 0x73, 0x2e, 0x66, 0x3d,
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@@ -201,9 +201,9 @@ unsigned char index_js[] = {
   0x3d, 0x3d, 0x28, 0x33, 0x36, 0x26, 0x74, 0x68, 0x69, 0x73, 0x2e, 0x66,
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@@ -437,321 +437,340 @@ unsigned char index_js[] = {
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 };
-unsigned int index_js_len = 22800;
+unsigned int index_js_len = 23136;
diff --git a/examples/server/json-schema-to-grammar.mjs.hpp b/examples/server/json-schema-to-grammar.mjs.hpp
index cf5aaba287433..7762570016eee 100644
--- a/examples/server/json-schema-to-grammar.mjs.hpp
+++ b/examples/server/json-schema-to-grammar.mjs.hpp
@@ -114,913 +114,1004 @@ unsigned char json_schema_to_grammar_mjs[] = {
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 };
-unsigned int json_schema_to_grammar_mjs_len = 19111;
+unsigned int json_schema_to_grammar_mjs_len = 19260;
diff --git a/examples/server/public/index.js b/examples/server/public/index.js
index 1d53ced59c522..aa3ffb5e06be5 100644
--- a/examples/server/public/index.js
+++ b/examples/server/public/index.js
@@ -1 +1 @@
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From f30d6c27b9eb8f1583de9e5bfc7cf6152df3f055 Mon Sep 17 00:00:00 2001
From: ochafik <ochafik@google.com>
Date: Sat, 16 Mar 2024 10:35:41 +0000
Subject: [PATCH 72/98] json: simplify test

---
 tests/test-json-schema-to-grammar.cpp | 115 ++++++++++++--------------
 1 file changed, 55 insertions(+), 60 deletions(-)

diff --git a/tests/test-json-schema-to-grammar.cpp b/tests/test-json-schema-to-grammar.cpp
index 9e2fa95215d0e..d97aa49fe0796 100755
--- a/tests/test-json-schema-to-grammar.cpp
+++ b/tests/test-json-schema-to-grammar.cpp
@@ -25,24 +25,10 @@ struct TestCase {
   string schema;
   string expected;
 
-  void write_input() const {
-    ofstream f;
-    f.open("test-json-schema-input.tmp");
-    f << schema.c_str();
-    f.close();
-  }
-
-  void read_and_verify(const string& series) const {
-    ostringstream actuals;
-    actuals << ifstream("test-grammar-output.tmp").rdbuf();
-    auto actual = actuals.str();
-    verify(series, actual);
-  }
-
-  void verify(const string& series, const string& actual) const {
+  void verify(const string& actual) const {
     if (trim(actual) != trim(expected)) {
       cerr << "#" << endl;
-      cerr << "# Test " << name.c_str() << " (" << series.c_str() << ") failed." << endl;
+      cerr << "# Test '" << name.c_str() << "' failed." << endl;
       cerr << "#" << endl;
       cerr << schema.c_str() << endl;
       cerr << "# EXPECTED:\n" << expected.c_str() << endl;
@@ -53,35 +39,27 @@ struct TestCase {
 
 };
 
-
-static void run_py(const TestCase& tc) {
-  cerr << "Testing JSON schema conversion: " << tc.name.c_str() << " (Python)" << endl;
-  tc.write_input();
-  assert(std::system("python ./examples/json-schema-to-grammar.py test-json-schema-input.tmp > test-grammar-output.tmp") == 0);
-  tc.read_and_verify("Python");
-}
-
-static void run_mjs(const TestCase& tc) {
-  cerr << "Testing JSON schema conversion: " << tc.name.c_str() << " (JS)" << endl;
-  tc.write_input();
-  assert(std::system("node ./tests/run-json-schema-to-grammar.mjs test-json-schema-input.tmp > test-grammar-output.tmp") == 0);
-  tc.read_and_verify("JavaScript");
-}
-
-static void run_cpp(const TestCase& tc) {
-  cerr << "Testing JSON schema conversion: " << tc.name.c_str() << " (C++)" << endl;
-  auto actual = json_schema_to_grammar(nlohmann::json::parse(tc.schema));
-  tc.verify("C++", actual);
+static void write(const string& file, const string& content) {
+  ofstream f;
+  f.open(file.c_str());
+  f << content.c_str();
+  f.close();
 }
 
-static void run_all(const TestCase& tc) {
-  run_py(tc);
-  run_mjs(tc);
-  run_cpp(tc);
+static string read(const string& file) {
+  ostringstream actuals;
+  actuals << ifstream(file.c_str()).rdbuf();
+  return actuals.str();
 }
 
-int main() {
-  run_all({
+static void test(const string& lang, std::function<void(const TestCase&)> runner) {
+  cerr << "Testing JSON schema conversion (" << lang.c_str() << ")" << endl;
+  auto run = [&](const TestCase& tc) {
+    cerr << "- " << tc.name.c_str() << endl;
+    runner(tc);
+  };
+  
+  run({
     "exotic formats",
     R"""({
       "items": [
@@ -104,7 +82,7 @@ int main() {
     )"""
   });
 
-  run_all({
+  run({
     "string",
     R"""({
       "type": "string"
@@ -118,7 +96,7 @@ int main() {
     )"""
   });
 
-  run_all({
+  run({
     "boolean",
     R"""({
       "type": "boolean"
@@ -129,7 +107,7 @@ int main() {
     )"""
   });
 
-  run_all({
+  run({
     "integer",
     R"""({
       "type": "integer"
@@ -140,7 +118,7 @@ int main() {
     )"""
   });
 
-  run_all({
+  run({
     "tuple1",
     R"""({
       "prefixItems": [{ "type": "string" }]
@@ -155,7 +133,7 @@ int main() {
     )"""
   });
 
-  run_all({
+  run({
     "tuple2",
     R"""({
       "prefixItems": [{ "type": "string" }, { "type": "number" }]
@@ -171,7 +149,7 @@ int main() {
     )"""
   });
 
-  run_all({
+  run({
     "number",
     R"""({
       "type": "number"
@@ -182,7 +160,7 @@ int main() {
     )"""
   });
 
-  run_all({
+  run({
     "minItems",
     R"""({
       "items": {
@@ -197,7 +175,7 @@ int main() {
     )"""
   });
 
-  run_all({
+  run({
     "maxItems 1",
     R"""({
       "items": {
@@ -212,7 +190,7 @@ int main() {
     )"""
   });
 
-  run_all({
+  run({
     "maxItems 2",
     R"""({
       "items": {
@@ -227,7 +205,7 @@ int main() {
     )"""
   });
 
-  run_all({
+  run({
     "min + maxItems",
     R"""({
       "items": {
@@ -245,7 +223,7 @@ int main() {
     )"""
   });
 
-  run_all({
+  run({
     "regexp",
     R"""({
       "type": "string",
@@ -259,8 +237,8 @@ int main() {
     )"""
   });
 
-  run_all({
-    "object w/ required props",
+  run({
+    "required props",
     R"""({
       "type": "object",
       "properties": {
@@ -290,8 +268,8 @@ int main() {
     )"""
   });
 
-  run_all({
-    "1 optional",
+  run({
+    "1 optional prop",
     R"""({
       "properties": {
         "a": {
@@ -311,8 +289,8 @@ int main() {
     )"""
   });
 
-  run_all({
-    "optionals",
+  run({
+    "N optionals",
     R"""({
       "type": "object",
       "properties": {
@@ -381,7 +359,7 @@ int main() {
     )"""
   });
 
-  run_all({
+  run({
     "top-level $ref",
     R"""({
       "$ref": "#/definitions/MyType",
@@ -412,7 +390,7 @@ int main() {
     )"""
   });
 
-  run_all({
+  run({
     "conflicting names",
     R"""({
       "type": "object",
@@ -457,3 +435,20 @@ int main() {
     )"""
   });
 }
+
+int main() {
+  test("Python", [](const TestCase& tc) {
+    write("test-json-schema-input.tmp", tc.schema);
+    assert(std::system("python ./examples/json-schema-to-grammar.py test-json-schema-input.tmp > test-grammar-output.tmp") == 0);
+    tc.verify(read("test-grammar-output.tmp"));
+  });
+  test("JavaScript", [](const TestCase& tc) {
+    write("test-json-schema-input.tmp", tc.schema);
+    assert(std::system("node ./tests/run-json-schema-to-grammar.mjs test-json-schema-input.tmp > test-grammar-output.tmp") == 0);
+    tc.verify(read("test-grammar-output.tmp"));
+  });
+  test("C++", [](const TestCase& tc) {
+    tc.verify(json_schema_to_grammar(nlohmann::json::parse(tc.schema)));
+  });
+}
+  
\ No newline at end of file

From 391b17e7f66cd145df7bec9980f875626e318d48 Mon Sep 17 00:00:00 2001
From: ochafik <ochafik@google.com>
Date: Sat, 16 Mar 2024 11:13:29 +0000
Subject: [PATCH 73/98] json: support mix of additional props &
 required/optional

---
 examples/json-schema-to-grammar.py            |  38 +-
 examples/server/json-schema-to-grammar.cpp    |  45 +-
 .../server/json-schema-to-grammar.mjs.hpp     | 982 +++++++++---------
 examples/server/public/index.js               |   1 -
 .../server/public/json-schema-to-grammar.mjs  |  37 +-
 tests/test-json-schema-to-grammar.cpp         | 172 ++-
 6 files changed, 686 insertions(+), 589 deletions(-)

diff --git a/examples/json-schema-to-grammar.py b/examples/json-schema-to-grammar.py
index 2a7c78afec8d8..73baa0d4f7ebf 100755
--- a/examples/json-schema-to-grammar.py
+++ b/examples/json-schema-to-grammar.py
@@ -4,7 +4,7 @@
 import json
 import re
 import sys
-from typing import Any, Dict, List, Set, Tuple
+from typing import Any, Dict, List, Set, Tuple, Union
 
 # whitespace is constrained to a single space char to prevent model "running away" in
 # whitespace. Also maybe improves generation quality?
@@ -320,10 +320,10 @@ def visit(self, schema, name):
             rule = ' | '.join((self._format_literal(v) for v in schema['enum']))
             return self._add_rule(rule_name, rule)
 
-        elif schema_type in (None, 'object') and 'properties' in schema:
+        elif schema_type in (None, 'object') and ('properties' in schema or 'additionalProperties' in schema):
             required = set(schema.get('required', []))
-            properties = list(schema['properties'].items())
-            return self._add_rule(rule_name, self._build_object_rule(properties, required, name))
+            properties = list(schema.get('properties', {}).items())
+            return self._add_rule(rule_name, self._build_object_rule(properties, required, name, schema.get('additionalProperties')))
 
         elif schema_type in (None, 'object') and 'allOf' in schema:
             required = set()
@@ -346,19 +346,7 @@ def add_component(comp_schema, is_required):
                 else:
                     add_component(t, is_required=True)
 
-            return self._add_rule(rule_name, self._build_object_rule(properties, required, hybrid_name))
-
-        elif schema_type in (None, 'object') and 'additionalProperties' in schema:
-            additional_properties = schema['additionalProperties']
-            if not isinstance(additional_properties, dict):
-                additional_properties = {}
-
-            sub_name = f'{name}{"-" if name else ""}additionalProperties'
-            value_rule = self.visit(additional_properties, f'{sub_name}-value')
-            kv_rule = self._add_rule(f'{sub_name}-kv', f'string ":" space {value_rule}')
-            return self._add_rule(
-                rule_name,
-                f'( {kv_rule} ( "," space {kv_rule} )* )*')
+            return self._add_rule(rule_name, self._build_object_rule(properties, required, hybrid_name, additional_properties=[]))
 
         elif schema_type in (None, 'array') and ('items' in schema or 'prefixItems' in schema):
             items = schema.get('items') or schema['prefixItems']
@@ -417,7 +405,7 @@ def add_component(comp_schema, is_required):
                 PRIMITIVE_RULES[schema_type]
             )
 
-    def _build_object_rule(self, properties: List[Tuple[str, Any]], required: Set[str], name: str):
+    def _build_object_rule(self, properties: List[Tuple[str, Any]], required: Set[str], name: str, additional_properties: Union[bool, Any]):
         prop_order = self._prop_order
         # sort by position in prop_order (if specified) then by original order
         sorted_props = [kv[0] for _, kv in sorted(enumerate(properties), key=lambda ikv: (prop_order.get(ikv[1][0], len(prop_order)), ikv[0]))]
@@ -429,10 +417,15 @@ def _build_object_rule(self, properties: List[Tuple[str, Any]], required: Set[st
                 f'{name}{"-" if name else ""}{prop_name}-kv',
                 fr'{self._format_literal(prop_name)} space ":" space {prop_rule_name}'
             )
-
         required_props = [k for k in sorted_props if k in required]
         optional_props = [k for k in sorted_props if k not in required]
 
+        if additional_properties:
+            sub_name = f'{name}{"-" if name else ""}additional'
+            value_rule = self.visit(additional_properties, f'{sub_name}-value')
+            prop_kv_rule_names["*"] = self._add_rule(f'{sub_name}-kv', f'string ":" space {value_rule}')
+            optional_props.append("*")
+
         rule = '"{" space '
         rule += ' "," space '.join(prop_kv_rule_names[k] for k in required_props)
 
@@ -444,7 +437,12 @@ def _build_object_rule(self, properties: List[Tuple[str, Any]], required: Set[st
             def get_recursive_refs(ks, first_is_optional):
                 [k, *rest] = ks
                 kv_rule_name = prop_kv_rule_names[k]
-                if first_is_optional:
+                if k == '*':
+                    res = self._add_rule(
+                        f'{name}{"-" if name else ""}additional-kvs',
+                        f'{kv_rule_name} ( "," space ' + kv_rule_name + ' )*'
+                    )
+                elif first_is_optional:
                     res = f'( "," space {kv_rule_name} )?'
                 else:
                     res = kv_rule_name
diff --git a/examples/server/json-schema-to-grammar.cpp b/examples/server/json-schema-to-grammar.cpp
index 059ffd7ed3527..e74712cc579a5 100644
--- a/examples/server/json-schema-to-grammar.cpp
+++ b/examples/server/json-schema-to-grammar.cpp
@@ -388,7 +388,12 @@ class SchemaConverter {
         return ref_name;
     }
 
-    string _build_object_rule(const vector<pair<string, json>>& properties, const unordered_set<string>& required, const string& name) {
+    string _build_object_rule(
+        const vector<pair<string, json>>& properties,
+        const unordered_set<string>& required,
+        const string& name,
+        const json& additional_properties)
+    {
         vector<string> required_props;
         vector<string> optional_props;
         unordered_map<string, string> prop_kv_rule_names;
@@ -407,6 +412,13 @@ class SchemaConverter {
                 optional_props.push_back(prop_name);
             }
         }
+        if (additional_properties.is_object()) {
+            string sub_name = name + (name.empty() ? "" : "-") + "additional";
+            string value_rule = visit(additional_properties, sub_name + "-value");
+            string kv_rule = _add_rule(sub_name + "-kv", "string \":\" space " + value_rule);
+            prop_kv_rule_names["*"] = kv_rule;
+            optional_props.push_back("*");
+        }
 
         string rule = "\"{\" space ";
         for (size_t i = 0; i < required_props.size(); i++) {
@@ -429,7 +441,12 @@ class SchemaConverter {
                 }
                 string k = ks[0];
                 string kv_rule_name = prop_kv_rule_names[k];
-                if (first_is_optional) {
+                if (k == "*") {
+                    res = _add_rule(
+                        name + (name.empty() ? "" : "-") + "additional-kvs",
+                        kv_rule_name + " ( \",\" space " + kv_rule_name + " )*"
+                    );
+                } else if (first_is_optional) {
                     res = "( \",\" space " + kv_rule_name + " )?";
                 } else {
                     res = kv_rule_name;
@@ -554,7 +571,8 @@ class SchemaConverter {
                 enum_values.push_back(_format_literal(v.dump()));
             }
             return _add_rule(rule_name, join(enum_values.begin(), enum_values.end(), " | "));
-        } else if ((schema_type.is_null() || schema_type == "object") && schema.contains("properties")) {
+        } else if ((schema_type.is_null() || schema_type == "object")
+                && (schema.contains("properties") || schema.contains("additionalProperties"))) {
             unordered_set<string> required;
             if (schema.contains("required") && schema["required"].is_array()) {
                 for (const auto& item : schema["required"]) {
@@ -564,10 +582,12 @@ class SchemaConverter {
                 }
             }
             vector<pair<string, json>> properties;
-            for (const auto& prop : schema["properties"].items()) {
-                properties.emplace_back(prop.key(), prop.value());
+            if (schema.contains("properties")) {
+                for (const auto& prop : schema["properties"].items()) {
+                    properties.emplace_back(prop.key(), prop.value());
+                }
             }
-            return _add_rule(rule_name, _build_object_rule(properties, required, name));
+            return _add_rule(rule_name, _build_object_rule(properties, required, name, schema["additionalProperties"]));
         } else if ((schema_type.is_null() || schema_type == "object") && schema.contains("allOf")) {
             unordered_set<string> required;
             vector<pair<string, json>> properties;
@@ -595,16 +615,7 @@ class SchemaConverter {
                     add_component(t, true);
                 }
             }
-            return _add_rule(rule_name, _build_object_rule(properties, required, hybrid_name));
-        } else if ((schema_type.is_null() || schema_type == "object") && schema.contains("additionalProperties")) {
-            json additional_properties = schema["additionalProperties"];
-            if (!additional_properties.is_object()) {
-                additional_properties = json::object();
-            }
-            string sub_name = name + (name.empty() ? "" : "-") + "additionalProperties";
-            string value_rule = visit(additional_properties, sub_name + "-value");
-            string kv_rule = _add_rule(sub_name + "-kv", "string \":\" space " + value_rule);
-            return _add_rule(rule_name, "( " + kv_rule + " ( \",\" space " + kv_rule + " )* )*");
+            return _add_rule(rule_name, _build_object_rule(properties, required, hybrid_name, json()));
         } else if ((schema_type.is_null() || schema_type == "array") && (schema.contains("items") || schema.contains("prefixItems"))) {
             json items = schema.contains("items") ? schema["items"] : schema["prefixItems"];
             if (items.is_array()) {
@@ -656,7 +667,7 @@ class SchemaConverter {
             }
             return schema_format + "-string";
         } else {
-            if (PRIMITIVE_RULES.find(schema_type.get<string>()) == PRIMITIVE_RULES.end()) {
+            if (!schema_type.is_string() || PRIMITIVE_RULES.find(schema_type.get<string>()) == PRIMITIVE_RULES.end()) {
               _errors.push_back("Unrecognized schema: " + schema.dump());
               return "";
             }
diff --git a/examples/server/json-schema-to-grammar.mjs.hpp b/examples/server/json-schema-to-grammar.mjs.hpp
index 7762570016eee..d4fce5463e774 100644
--- a/examples/server/json-schema-to-grammar.mjs.hpp
+++ b/examples/server/json-schema-to-grammar.mjs.hpp
@@ -1021,370 +1021,335 @@ unsigned char json_schema_to_grammar_mjs[] = {
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 };
-unsigned int json_schema_to_grammar_mjs_len = 19260;
+unsigned int json_schema_to_grammar_mjs_len = 19448;
diff --git a/examples/server/public/index.js b/examples/server/public/index.js
index aa3ffb5e06be5..e69de29bb2d1d 100644
--- a/examples/server/public/index.js
+++ b/examples/server/public/index.js
@@ -1 +0,0 @@
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diff --git a/examples/server/public/json-schema-to-grammar.mjs b/examples/server/public/json-schema-to-grammar.mjs
index 6046804881e9c..952c38647a12b 100644
--- a/examples/server/public/json-schema-to-grammar.mjs
+++ b/examples/server/public/json-schema-to-grammar.mjs
@@ -342,10 +342,10 @@ export class SchemaConverter {
     } else if ('enum' in schema) {
       const rule = schema.enum.map(v => this._formatLiteral(v)).join(' | ');
       return this._addRule(ruleName, rule);
-    } else if ((schemaType === undefined || schemaType === 'object') && 'properties' in schema) {
+    } else if ((schemaType === undefined || schemaType === 'object') && ('properties' in schema || 'additionalProperties' in schema)) {
       const required = new Set(schema.required || []);
-      const properties = Object.entries(schema.properties);
-      return this._addRule(ruleName, this._buildObjectRule(properties, required, name));
+      const properties = Object.entries(schema.properties ?? {});
+      return this._addRule(ruleName, this._buildObjectRule(properties, required, name, schema.additionalProperties));
     } else if ((schemaType === undefined || schemaType === 'object') && 'allOf' in schema) {
       const required = new Set();
       const properties = [];
@@ -375,14 +375,7 @@ export class SchemaConverter {
         }
       }
 
-      return this._addRule(ruleName, this._buildObjectRule(properties, required, name));
-    } else if ((schemaType === undefined || schemaType === 'object') && 'additionalProperties' in schema) {
-      const additionalProperties = typeof schema.additionalProperties === 'object' ? schema.additionalProperties : {};
-
-      const subName = `${name ?? ''}${name ? '-' : ''}additionalProperties`;
-      const valueRule = this.visit(additionalProperties, `${subName}-value`);
-      const kvRule = this._addRule(`${subName}-kv`, `string ":" space ${valueRule}`);
-      return this._addRule(ruleName, `( ${kvRule} ( "," space ${kvRule} )* )*`);
+      return this._addRule(ruleName, this._buildObjectRule(properties, required, name, /* additionalProperties= */ false));
     } else if ((schemaType === undefined || schemaType === 'array') && ('items' in schema || 'prefixItems' in schema)) {
       const items = schema.items ?? schema.prefixItems;
       if (Array.isArray(items)) {
@@ -438,7 +431,7 @@ export class SchemaConverter {
     }
   }
 
-  _buildObjectRule(properties, required, name) {
+  _buildObjectRule(properties, required, name, additionalProperties) {
     const propOrder = this._propOrder;
     // sort by position in prop_order (if specified) then by original order
     const sortedProps = properties.map(([k]) => k).sort((a, b) => {
@@ -458,10 +451,16 @@ export class SchemaConverter {
         `${this._formatLiteral(propName)} space ":" space ${propRuleName}`
       );
     }
-
     const requiredProps = sortedProps.filter(k => required.has(k));
     const optionalProps = sortedProps.filter(k => !required.has(k));
 
+    if (typeof additionalProperties === 'object') {
+      const subName = `${name ?? ''}${name ? '-' : ''}additional`;
+      const valueRule = this.visit(additionalProperties, `${subName}-value`);
+      propKvRuleNames['*'] = this._addRule(`${subName}-kv`, `string ":" space ${valueRule}`);
+      optionalProps.push('*');
+    }
+
     let rule = '"{" space ';
     rule += requiredProps.map(k => propKvRuleNames[k]).join(' "," space ');
 
@@ -474,7 +473,17 @@ export class SchemaConverter {
       const getRecursiveRefs = (ks, firstIsOptional) => {
         const [k, ...rest] = ks;
         const kvRuleName = propKvRuleNames[k];
-        let res = firstIsOptional ? `( "," space ${kvRuleName} )?` : kvRuleName;
+        let res;
+        if (k === '*') {
+            res = this._addRule(
+                `${name ?? ''}${name ? '-' : ''}additional-kvs`,
+                `${kvRuleName} ( "," space ` + kvRuleName + ` )*`
+            )
+        } else if (firstIsOptional) {
+          res = `( "," space ${kvRuleName} )?`;
+        } else {
+          res = kvRuleName;
+        }
         if (rest.length > 0) {
           res += ' ' + this._addRule(
             `${name ?? ''}${name ? '-' : ''}${k}-rest`,
diff --git a/tests/test-json-schema-to-grammar.cpp b/tests/test-json-schema-to-grammar.cpp
index d97aa49fe0796..89ba1c753d3da 100755
--- a/tests/test-json-schema-to-grammar.cpp
+++ b/tests/test-json-schema-to-grammar.cpp
@@ -58,7 +58,7 @@ static void test(const string& lang, std::function<void(const TestCase&)> runner
     cerr << "- " << tc.name.c_str() << endl;
     runner(tc);
   };
-  
+
   run({
     "exotic formats",
     R"""({
@@ -290,67 +290,89 @@ static void test(const string& lang, std::function<void(const TestCase&)> runner
   });
 
   run({
-    "N optionals",
+    "N optional props",
     R"""({
-      "type": "object",
       "properties": {
-        "a": {
-          "type": "string"
-        },
-        "b": {
-          "type": "string"
-        },
-        "c": {
-          "type": [
-            "number",
-            "string"
-          ]
-        },
-        "d": {
-          "type": "string"
-        },
-        "e": {
-          "type": "object",
-          "additionalProperties": {
-            "type": "array",
-            "items": {
-              "type": "array",
-              "minItems": 2,
-              "items": [
-                {
-                  "type": "string"
-                },
-                {
-                  "type": "number"
-                }
-              ],
-              "maxItems": 2
-            }
-          }
-        }
+        "a": {"type": "string"},
+        "b": {"type": "string"},
+        "c": {"type": "string"}
       },
-      "required": [
-        "a",
-        "b"
-      ],
-      "additionalProperties": false,
-      "definitions": {}
+      "additionalProperties": false
+    })""",
+    R"""(
+      a-kv ::= "\"a\"" space ":" space string
+      a-rest ::= ( "," space b-kv )? b-rest
+      b-kv ::= "\"b\"" space ":" space string
+      b-rest ::= ( "," space c-kv )?
+      c-kv ::= "\"c\"" space ":" space string
+      root ::= "{" space  (a-kv a-rest | b-kv b-rest | c-kv )? "}" space
+      space ::= " "?
+      string ::=  "\"" (
+              [^"\\] |
+              "\\" (["\\/bfnrt] | "u" [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F])
+            )* "\"" space
+    )"""
+  });
+
+  run({
+    "required + optional props",
+    R"""({
+      "properties": {
+        "a": {"type": "string"},
+        "b": {"type": "string"},
+        "c": {"type": "string"},
+        "d": {"type": "string"}
+      },
+      "required": ["a", "b"],
+      "additionalProperties": false
     })""",
     R"""(
       a-kv ::= "\"a\"" space ":" space string
       b-kv ::= "\"b\"" space ":" space string
-      c ::= number | string
-      c-kv ::= "\"c\"" space ":" space c
-      c-rest ::= ( "," space d-kv )? d-rest
+      c-kv ::= "\"c\"" space ":" space string
+      c-rest ::= ( "," space d-kv )?
       d-kv ::= "\"d\"" space ":" space string
-      d-rest ::= ( "," space e-kv )?
-      e ::= ( e-additionalProperties-kv ( "," space e-additionalProperties-kv )* )*
-      e-additionalProperties-kv ::= string ":" space e-additionalProperties-value
-      e-additionalProperties-value ::= "[" space ( e-additionalProperties-value-item ( "," space e-additionalProperties-value-item )* )? "]" space
-      e-additionalProperties-value-item ::= "[" space string "," space number "]" space
-      e-kv ::= "\"e\"" space ":" space e
+      root ::= "{" space a-kv "," space b-kv ( "," space ( c-kv c-rest | d-kv ) )? "}" space
+      space ::= " "?
+      string ::=  "\"" (
+              [^"\\] |
+              "\\" (["\\/bfnrt] | "u" [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F])
+            )* "\"" space
+    )"""
+  });
+
+  run({
+    "additional props",
+    R"""({
+      "type": "object",
+      "additionalProperties": {"type": "array", "items": {"type": "number"}}
+    })""",
+    R"""(
+      additional-kv ::= string ":" space additional-value
+      additional-kvs ::= additional-kv ( "," space additional-kv )*
+      additional-value ::= "[" space ( number ( "," space number )* )? "]" space
       number ::= ("-"? ([0-9] | [1-9] [0-9]*)) ("." [0-9]+)? ([eE] [-+]? [0-9]+)? space
-      root ::= "{" space a-kv "," space b-kv ( "," space ( c-kv c-rest | d-kv d-rest | e-kv ) )? "}" space
+      root ::= "{" space  (additional-kvs )? "}" space
+      space ::= " "?
+    )"""
+  });
+
+  run({
+    "required + additional props",
+    R"""({
+      "type": "object",
+      "properties": {
+        "a": {"type": "number"}
+      },
+      "required": ["a"],
+      "additionalProperties": {"type": "string"}
+    })""",
+    R"""(
+      a-kv ::= "\"a\"" space ":" space number
+      additional-kv ::= string ":" space string
+      additional-kvs ::= additional-kv ( "," space additional-kv )*
+      number ::= ("-"? ([0-9] | [1-9] [0-9]*)) ("." [0-9]+)? ([eE] [-+]? [0-9]+)? space
+      root ::= "{" space a-kv ( "," space ( additional-kvs ) )? "}" space
       space ::= " "?
       string ::=  "\"" (
               [^"\\] |
@@ -359,6 +381,49 @@ static void test(const string& lang, std::function<void(const TestCase&)> runner
     )"""
   });
 
+  run({
+    "optional + additional props",
+    R"""({
+      "type": "object",
+      "properties": {
+        "a": {"type": "number"}
+      },
+      "additionalProperties": {"type": "number"}
+    })""",
+    R"""(
+      a-kv ::= "\"a\"" space ":" space number
+      a-rest ::= additional-kvs
+      additional-kv ::= string ":" space number
+      additional-kvs ::= additional-kv ( "," space additional-kv )*
+      number ::= ("-"? ([0-9] | [1-9] [0-9]*)) ("." [0-9]+)? ([eE] [-+]? [0-9]+)? space
+      root ::= "{" space  (a-kv a-rest | additional-kvs )? "}" space
+      space ::= " "?
+    )"""
+  });
+
+  run({
+    "required + optional + additional props",
+    R"""({
+      "type": "object",
+      "properties": {
+        "a": {"type": "number"},
+        "b": {"type": "number"}
+      },
+      "required": ["a"],
+      "additionalProperties": {"type": "number"}
+    })""",
+    R"""(
+      a-kv ::= "\"a\"" space ":" space number
+      additional-kv ::= string ":" space number
+      additional-kvs ::= additional-kv ( "," space additional-kv )*
+      b-kv ::= "\"b\"" space ":" space number
+      b-rest ::= additional-kvs
+      number ::= ("-"? ([0-9] | [1-9] [0-9]*)) ("." [0-9]+)? ([eE] [-+]? [0-9]+)? space
+      root ::= "{" space a-kv ( "," space ( b-kv b-rest | additional-kvs ) )? "}" space
+      space ::= " "?
+    )"""
+  });
+
   run({
     "top-level $ref",
     R"""({
@@ -451,4 +516,3 @@ int main() {
     tc.verify(json_schema_to_grammar(nlohmann::json::parse(tc.schema)));
   });
 }
-  
\ No newline at end of file

From 64799baea10c7b83219ea72297c2a26a873cecf7 Mon Sep 17 00:00:00 2001
From: ochafik <ochafik@google.com>
Date: Sun, 17 Mar 2024 21:01:02 +0000
Subject: [PATCH 74/98] json: add tests for some expected failures

---
 tests/test-json-schema-to-grammar.cpp | 127 +++++++++++++++++++-------
 1 file changed, 95 insertions(+), 32 deletions(-)

diff --git a/tests/test-json-schema-to-grammar.cpp b/tests/test-json-schema-to-grammar.cpp
index 89ba1c753d3da..63a637add7482 100755
--- a/tests/test-json-schema-to-grammar.cpp
+++ b/tests/test-json-schema-to-grammar.cpp
@@ -20,7 +20,12 @@ static std::string trim(const std::string & source) {
     return regex_replace(s, regex("(^|\n)[ \t]+"), "$1");
 }
 
+enum TestCaseStatus {
+  SUCCESS, FAILURE
+};
+
 struct TestCase {
+  TestCaseStatus expected_status;
   string name;
   string schema;
   string expected;
@@ -36,7 +41,17 @@ struct TestCase {
       assert(false);
     }
   }
-
+  void verify_status(TestCaseStatus status) const {
+    if (status != expected_status) {
+      cerr << "#" << endl;
+      cerr << "# Test '" << name.c_str() << "' failed." << endl;
+      cerr << "#" << endl;
+      cerr << schema.c_str() << endl;
+      cerr << "# EXPECTED STATUS: " << (expected_status == SUCCESS ? "SUCCESS" : "FAILURE") << endl;
+      cerr << "# ACTUAL STATUS: " << (status == SUCCESS ? "SUCCESS" : "FAILURE") << endl;
+      assert(false);
+    }
+  }
 };
 
 static void write(const string& file, const string& content) {
@@ -52,14 +67,33 @@ static string read(const string& file) {
   return actuals.str();
 }
 
-static void test(const string& lang, std::function<void(const TestCase&)> runner) {
+static void test_all(const string& lang, std::function<void(const TestCase&)> runner) {
   cerr << "Testing JSON schema conversion (" << lang.c_str() << ")" << endl;
-  auto run = [&](const TestCase& tc) {
-    cerr << "- " << tc.name.c_str() << endl;
+  auto test = [&](const TestCase& tc) {
+    cerr << "- " << tc.name.c_str() << (tc.expected_status == FAILURE ? " (failure expected)" : "") << endl;
     runner(tc);
   };
 
-  run({
+  test({
+    FAILURE,
+    "unknown type",
+    R"""({
+      "type": "kaboom"
+    })""",
+    ""
+  });
+
+  test({
+    FAILURE,
+    "invalid type type",
+    R"""({
+      "type": 123
+    })""",
+    ""
+  });
+
+  test({
+    SUCCESS,
     "exotic formats",
     R"""({
       "items": [
@@ -82,7 +116,8 @@ static void test(const string& lang, std::function<void(const TestCase&)> runner
     )"""
   });
 
-  run({
+  test({
+    SUCCESS,
     "string",
     R"""({
       "type": "string"
@@ -96,7 +131,8 @@ static void test(const string& lang, std::function<void(const TestCase&)> runner
     )"""
   });
 
-  run({
+  test({
+    SUCCESS,
     "boolean",
     R"""({
       "type": "boolean"
@@ -107,7 +143,8 @@ static void test(const string& lang, std::function<void(const TestCase&)> runner
     )"""
   });
 
-  run({
+  test({
+    SUCCESS,
     "integer",
     R"""({
       "type": "integer"
@@ -118,7 +155,8 @@ static void test(const string& lang, std::function<void(const TestCase&)> runner
     )"""
   });
 
-  run({
+  test({
+    SUCCESS,
     "tuple1",
     R"""({
       "prefixItems": [{ "type": "string" }]
@@ -133,7 +171,8 @@ static void test(const string& lang, std::function<void(const TestCase&)> runner
     )"""
   });
 
-  run({
+  test({
+    SUCCESS,
     "tuple2",
     R"""({
       "prefixItems": [{ "type": "string" }, { "type": "number" }]
@@ -149,7 +188,8 @@ static void test(const string& lang, std::function<void(const TestCase&)> runner
     )"""
   });
 
-  run({
+  test({
+    SUCCESS,
     "number",
     R"""({
       "type": "number"
@@ -160,7 +200,8 @@ static void test(const string& lang, std::function<void(const TestCase&)> runner
     )"""
   });
 
-  run({
+  test({
+    SUCCESS,
     "minItems",
     R"""({
       "items": {
@@ -175,7 +216,8 @@ static void test(const string& lang, std::function<void(const TestCase&)> runner
     )"""
   });
 
-  run({
+  test({
+    SUCCESS,
     "maxItems 1",
     R"""({
       "items": {
@@ -190,7 +232,8 @@ static void test(const string& lang, std::function<void(const TestCase&)> runner
     )"""
   });
 
-  run({
+  test({
+    SUCCESS,
     "maxItems 2",
     R"""({
       "items": {
@@ -205,7 +248,8 @@ static void test(const string& lang, std::function<void(const TestCase&)> runner
     )"""
   });
 
-  run({
+  test({
+    SUCCESS,
     "min + maxItems",
     R"""({
       "items": {
@@ -223,7 +267,8 @@ static void test(const string& lang, std::function<void(const TestCase&)> runner
     )"""
   });
 
-  run({
+  test({
+    SUCCESS,
     "regexp",
     R"""({
       "type": "string",
@@ -237,7 +282,8 @@ static void test(const string& lang, std::function<void(const TestCase&)> runner
     )"""
   });
 
-  run({
+  test({
+    SUCCESS,
     "required props",
     R"""({
       "type": "object",
@@ -268,7 +314,8 @@ static void test(const string& lang, std::function<void(const TestCase&)> runner
     )"""
   });
 
-  run({
+  test({
+    SUCCESS,
     "1 optional prop",
     R"""({
       "properties": {
@@ -289,7 +336,8 @@ static void test(const string& lang, std::function<void(const TestCase&)> runner
     )"""
   });
 
-  run({
+  test({
+    SUCCESS,
     "N optional props",
     R"""({
       "properties": {
@@ -314,7 +362,8 @@ static void test(const string& lang, std::function<void(const TestCase&)> runner
     )"""
   });
 
-  run({
+  test({
+    SUCCESS,
     "required + optional props",
     R"""({
       "properties": {
@@ -341,7 +390,8 @@ static void test(const string& lang, std::function<void(const TestCase&)> runner
     )"""
   });
 
-  run({
+  test({
+    SUCCESS,
     "additional props",
     R"""({
       "type": "object",
@@ -357,7 +407,8 @@ static void test(const string& lang, std::function<void(const TestCase&)> runner
     )"""
   });
 
-  run({
+  test({
+    SUCCESS,
     "required + additional props",
     R"""({
       "type": "object",
@@ -381,7 +432,8 @@ static void test(const string& lang, std::function<void(const TestCase&)> runner
     )"""
   });
 
-  run({
+  test({
+    SUCCESS,
     "optional + additional props",
     R"""({
       "type": "object",
@@ -401,7 +453,8 @@ static void test(const string& lang, std::function<void(const TestCase&)> runner
     )"""
   });
 
-  run({
+  test({
+    SUCCESS,
     "required + optional + additional props",
     R"""({
       "type": "object",
@@ -424,7 +477,8 @@ static void test(const string& lang, std::function<void(const TestCase&)> runner
     )"""
   });
 
-  run({
+  test({
+    SUCCESS,
     "top-level $ref",
     R"""({
       "$ref": "#/definitions/MyType",
@@ -455,7 +509,8 @@ static void test(const string& lang, std::function<void(const TestCase&)> runner
     )"""
   });
 
-  run({
+  test({
+    SUCCESS,
     "conflicting names",
     R"""({
       "type": "object",
@@ -502,17 +557,25 @@ static void test(const string& lang, std::function<void(const TestCase&)> runner
 }
 
 int main() {
-  test("Python", [](const TestCase& tc) {
+  test_all("Python", [](const TestCase& tc) {
     write("test-json-schema-input.tmp", tc.schema);
-    assert(std::system("python ./examples/json-schema-to-grammar.py test-json-schema-input.tmp > test-grammar-output.tmp") == 0);
+    tc.verify_status(std::system(
+      "python ./examples/json-schema-to-grammar.py test-json-schema-input.tmp > test-grammar-output.tmp") == 0 ? SUCCESS : FAILURE);
     tc.verify(read("test-grammar-output.tmp"));
   });
-  test("JavaScript", [](const TestCase& tc) {
+  test_all("JavaScript", [](const TestCase& tc) {
     write("test-json-schema-input.tmp", tc.schema);
-    assert(std::system("node ./tests/run-json-schema-to-grammar.mjs test-json-schema-input.tmp > test-grammar-output.tmp") == 0);
+    tc.verify_status(std::system(
+      "node ./tests/run-json-schema-to-grammar.mjs test-json-schema-input.tmp > test-grammar-output.tmp") == 0 ? SUCCESS : FAILURE);
     tc.verify(read("test-grammar-output.tmp"));
   });
-  test("C++", [](const TestCase& tc) {
-    tc.verify(json_schema_to_grammar(nlohmann::json::parse(tc.schema)));
+  test_all("C++", [](const TestCase& tc) {
+    try {
+      tc.verify(json_schema_to_grammar(nlohmann::json::parse(tc.schema)));
+      tc.verify_status(SUCCESS);
+    } catch (const runtime_error& ex) {
+      cerr << "Error: " << ex.what() << endl;
+      tc.verify_status(FAILURE);
+    }
   });
 }

From 5c50ffaeac8b78b2b1a401af51c7549ba3b7e5b1 Mon Sep 17 00:00:00 2001
From: ochafik <ochafik@google.com>
Date: Sun, 17 Mar 2024 21:03:48 +0000
Subject: [PATCH 75/98] json: fix type=const in c++, add failure expectations
 for non-str const&enum

---
 examples/json-schema-to-grammar.py            |  8 +++--
 examples/server/json-schema-to-grammar.cpp    | 12 ++++++--
 .../server/public/json-schema-to-grammar.mjs  | 14 +++++++--
 tests/test-json-schema-to-grammar.cpp         | 30 +++++++++++++++++++
 4 files changed, 58 insertions(+), 6 deletions(-)

diff --git a/examples/json-schema-to-grammar.py b/examples/json-schema-to-grammar.py
index 73baa0d4f7ebf..e66a948a5029e 100755
--- a/examples/json-schema-to-grammar.py
+++ b/examples/json-schema-to-grammar.py
@@ -299,6 +299,10 @@ def _resolve_ref(self, ref):
             self._refs_being_resolved.remove(ref)
         return ref_name
 
+    def _generate_constant_rule(self, value):
+        assert isinstance(value, str), f'Only string constants are supported, got {value}'
+        return self._format_literal(value)
+
     def visit(self, schema, name):
         schema_type = schema.get('type')
         schema_format = schema.get('format')
@@ -314,10 +318,10 @@ def visit(self, schema, name):
             return self._add_rule(rule_name, self._generate_union_rule(name, [{'type': t} for t in schema_type]))
 
         elif 'const' in schema:
-            return self._add_rule(rule_name, self._format_literal(schema['const']))
+            return self._add_rule(rule_name, self._generate_constant_rule(schema['const']))
 
         elif 'enum' in schema:
-            rule = ' | '.join((self._format_literal(v) for v in schema['enum']))
+            rule = ' | '.join((self._generate_constant_rule(v) for v in schema['enum']))
             return self._add_rule(rule_name, rule)
 
         elif schema_type in (None, 'object') and ('properties' in schema or 'additionalProperties' in schema):
diff --git a/examples/server/json-schema-to-grammar.cpp b/examples/server/json-schema-to-grammar.cpp
index e74712cc579a5..79046ffa70fd0 100644
--- a/examples/server/json-schema-to-grammar.cpp
+++ b/examples/server/json-schema-to-grammar.cpp
@@ -547,6 +547,14 @@ class SchemaConverter {
         visit_refs(schema);
     }
 
+    string _generate_constant_rule(const json& value) {
+        if (!value.is_string()) {
+            _errors.push_back("Only string constants are supported, got " + value.dump());
+            return "";
+        }
+        return _format_literal(value.get<string>());
+    }
+
     string visit(const json& schema, const string& name) {
         json schema_type = schema.contains("type") ? schema["type"] : json();
         string schema_format = schema.contains("format") ? schema["format"].get<string>() : "";
@@ -564,11 +572,11 @@ class SchemaConverter {
             }
             return _add_rule(rule_name, _generate_union_rule(name, schema_types));
         } else if (schema.contains("const")) {
-            return _add_rule(rule_name, _format_literal(schema["const"].dump()));
+            return _add_rule(rule_name, _generate_constant_rule(schema["const"]));
         } else if (schema.contains("enum")) {
             vector<string> enum_values;
             for (const auto& v : schema["enum"]) {
-                enum_values.push_back(_format_literal(v.dump()));
+                enum_values.push_back(_generate_constant_rule(v));
             }
             return _add_rule(rule_name, join(enum_values.begin(), enum_values.end(), " | "));
         } else if ((schema_type.is_null() || schema_type == "object")
diff --git a/examples/server/public/json-schema-to-grammar.mjs b/examples/server/public/json-schema-to-grammar.mjs
index 952c38647a12b..1db99de6ce685 100644
--- a/examples/server/public/json-schema-to-grammar.mjs
+++ b/examples/server/public/json-schema-to-grammar.mjs
@@ -325,6 +325,13 @@ export class SchemaConverter {
     return refName;
   }
 
+  _generateConstantRule(value) {
+    if (typeof value !== 'string') {
+      throw new Error('Only string constants are supported, got ' + JSON.stringify(value));
+    }
+    return this._formatLiteral(value);
+  }
+
   visit(schema, name) {
     const schemaType = schema.type;
     const schemaFormat = schema.format;
@@ -338,9 +345,12 @@ export class SchemaConverter {
     } else if (Array.isArray(schemaType)) {
       return this._addRule(ruleName, this._generateUnionRule(name, schemaType.map(t => ({ type: t }))));
     } else if ('const' in schema) {
-      return this._addRule(ruleName, this._formatLiteral(schema.const));
+      if (typeof schema.const !== 'string') {
+        throw new Error('Only string constants are supported, got ' + JSON.stringify(schema.const));
+      }
+      return this._addRule(ruleName, this._generateConstantRule(schema.const));
     } else if ('enum' in schema) {
-      const rule = schema.enum.map(v => this._formatLiteral(v)).join(' | ');
+      const rule = schema.enum.map(v => this._generateConstantRule(v)).join(' | ');
       return this._addRule(ruleName, rule);
     } else if ((schemaType === undefined || schemaType === 'object') && ('properties' in schema || 'additionalProperties' in schema)) {
       const required = new Set(schema.required || []);
diff --git a/tests/test-json-schema-to-grammar.cpp b/tests/test-json-schema-to-grammar.cpp
index 63a637add7482..450d0233b8b4c 100755
--- a/tests/test-json-schema-to-grammar.cpp
+++ b/tests/test-json-schema-to-grammar.cpp
@@ -155,6 +155,36 @@ static void test_all(const string& lang, std::function<void(const TestCase&)> ru
     )"""
   });
 
+  test({
+    SUCCESS,
+    "string const",
+    R"""({
+      "const": "foo"
+    })""",
+    R"""(
+      root ::= "\"foo\""
+      space ::= " "?
+    )"""
+  });
+
+  test({
+    FAILURE,
+    "non-string const",
+    R"""({
+      "const": 123
+    })""",
+    ""
+  });
+
+  test({
+    FAILURE,
+    "non-string enum",
+    R"""({
+      "enum": [123]
+    })""",
+    ""
+  });
+
   test({
     SUCCESS,
     "tuple1",

From 84e383c1d7d089e983b1a078e49fdbd0144d19ab Mon Sep 17 00:00:00 2001
From: ochafik <ochafik@google.com>
Date: Sun, 17 Mar 2024 21:51:10 +0000
Subject: [PATCH 76/98] json: test (& simplify output of) empty schema

---
 Makefile                                      |  2 +-
 examples/server/json-schema-to-grammar.cpp    |  7 ++++---
 .../server/public/json-schema-to-grammar.mjs  | 10 ++++-----
 tests/test-json-schema-to-grammar.cpp         | 21 ++++++++++++++++++-
 4 files changed, 30 insertions(+), 10 deletions(-)

diff --git a/Makefile b/Makefile
index 22778bf1fdd44..4fbbf758ea92c 100644
--- a/Makefile
+++ b/Makefile
@@ -862,7 +862,7 @@ tests/test-double-float: tests/test-double-float.cpp ggml.o $(OBJS)
 	$(CXX) $(CXXFLAGS) -c $< -o $(call GET_OBJ_FILE, $<)
 	$(CXX) $(CXXFLAGS) $(filter-out %.h $<,$^) $(call GET_OBJ_FILE, $<) -o $@ $(LDFLAGS)
 
-tests/test-json-schema-to-grammar: tests/test-json-schema-to-grammar.cpp
+tests/test-json-schema-to-grammar: tests/test-json-schema-to-grammar.cpp examples/server/json-schema-to-grammar.cpp examples/server/json-schema-to-grammar.h
 	$(CXX) $(CXXFLAGS) -c $< -o $(call GET_OBJ_FILE, $<)
 	$(CXX) $(CXXFLAGS) $(filter-out %.h $<,$^) $(call GET_OBJ_FILE, $<) -o $@ $(LDFLAGS)
 
diff --git a/examples/server/json-schema-to-grammar.cpp b/examples/server/json-schema-to-grammar.cpp
index 79046ffa70fd0..9481f513cfb6f 100644
--- a/examples/server/json-schema-to-grammar.cpp
+++ b/examples/server/json-schema-to-grammar.cpp
@@ -33,6 +33,7 @@ unordered_map<string, string> PRIMITIVE_RULES = {
                "      )* \"\\\"\" space"},
     {"null", "\"null\" space"}
 };
+vector<string> OBJECT_RULE_NAMES = {"object", "array", "string", "number", "boolean", "null"};
 
 unordered_map<string, string> DATE_RULES = {
     {"date", "[0-9] [0-9] [0-9] [0-9] \"-\" ( \"0\" [1-9] | \"1\" [0-2] ) \"-\" ( [0-2] [0-9] | \"3\" [0-1] )"},
@@ -663,10 +664,10 @@ class SchemaConverter {
         } else if ((schema_type.is_null() || schema_type == "string") && schema.contains("pattern")) {
             return _visit_pattern(schema["pattern"], rule_name);
         } else if (schema.empty() || (schema.size() == 1 && schema_type == "object")) {
-            for (const auto& kv : PRIMITIVE_RULES) {
-                _add_rule(kv.first, kv.second);
+            for (const auto& n : OBJECT_RULE_NAMES) {
+                _add_rule(n, PRIMITIVE_RULES.at(n));
             }
-            return "object";
+            return _add_rule(rule_name, "object");
         } else if ((schema_type.is_null() || schema_type == "string") && regex_match(schema_format, regex("^uuid[1-5]?$"))) {
             return _add_rule(rule_name == "root" ? "root" : schema_format, PRIMITIVE_RULES.at("uuid"));
         } else if ((schema_type.is_null() || schema_type == "string") && DATE_RULES.find(schema_format) != DATE_RULES.end()) {
diff --git a/examples/server/public/json-schema-to-grammar.mjs b/examples/server/public/json-schema-to-grammar.mjs
index 1db99de6ce685..67354a2959cfd 100644
--- a/examples/server/public/json-schema-to-grammar.mjs
+++ b/examples/server/public/json-schema-to-grammar.mjs
@@ -15,6 +15,7 @@ const PRIMITIVE_RULES = {
       )* "\\"" space`,
   null: '"null" space',
 };
+const OBJECT_RULE_NAMES = ['object', 'array', 'string', 'number', 'boolean', 'null'];
 
 // TODO: support "uri", "email" string formats
 const DATE_RULES = {
@@ -426,12 +427,11 @@ export class SchemaConverter {
         this._addRule(t, r);
       }
       return schemaFormat + '-string';
-    } else if (schemaType === 'object' && Object.keys(schema).length === 1 || schemaType === undefined && Object.keys(schema).length === 0) {
-      // This depends on all primitive types
-      for (const [t, r] of Object.entries(PRIMITIVE_RULES)) {
-        this._addRule(t, r);
+    } else if ((schemaType === 'object' && Object.keys(schema).length === 1) || (Object.keys(schema).length === 0)) {
+      for (const n of OBJECT_RULE_NAMES) {
+        this._addRule(n, PRIMITIVE_RULES[n]);
       }
-      return 'object';
+      return this._addRule(ruleName, 'object');
     } else {
       if (!(schemaType in PRIMITIVE_RULES)) {
         throw new Error(`Unrecognized schema: ${JSON.stringify(schema)}`);
diff --git a/tests/test-json-schema-to-grammar.cpp b/tests/test-json-schema-to-grammar.cpp
index 450d0233b8b4c..e0a80ea6c96b0 100755
--- a/tests/test-json-schema-to-grammar.cpp
+++ b/tests/test-json-schema-to-grammar.cpp
@@ -68,7 +68,7 @@ static string read(const string& file) {
 }
 
 static void test_all(const string& lang, std::function<void(const TestCase&)> runner) {
-  cerr << "Testing JSON schema conversion (" << lang.c_str() << ")" << endl;
+  cerr << "#\n# Testing JSON schema conversion (" << lang.c_str() << ")\n#" << endl;
   auto test = [&](const TestCase& tc) {
     cerr << "- " << tc.name.c_str() << (tc.expected_status == FAILURE ? " (failure expected)" : "") << endl;
     runner(tc);
@@ -92,6 +92,25 @@ static void test_all(const string& lang, std::function<void(const TestCase&)> ru
     ""
   });
 
+  test({
+    SUCCESS,
+    "empty schema (object)",
+    "{}",
+    R"""(
+      array ::= "[" space ( value ("," space value)* )? "]" space
+      boolean ::= ("true" | "false") space
+      null ::= "null" space
+      number ::= ("-"? ([0-9] | [1-9] [0-9]*)) ("." [0-9]+)? ([eE] [-+]? [0-9]+)? space
+      object ::= "{" space ( string ":" space value ("," space string ":" space value)* )? "}" space
+      root ::= object
+      space ::= " "?
+      string ::=  "\"" (
+              [^"\\] |
+              "\\" (["\\/bfnrt] | "u" [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F])
+            )* "\"" space
+    )"""
+  });
+
   test({
     SUCCESS,
     "exotic formats",

From 3e1bf44e5e1f8d9a331ce5beb66ae314fd5eb767 Mon Sep 17 00:00:00 2001
From: ochafik <ochafik@google.com>
Date: Sun, 17 Mar 2024 22:47:20 +0000
Subject: [PATCH 77/98] json: check parsing in test + fix value & string refs

---
 Makefile                                      |    4 +-
 examples/json-schema-to-grammar.py            |   15 +-
 examples/server/json-schema-to-grammar.cpp    |    4 +-
 .../server/json-schema-to-grammar.mjs.hpp     | 2971 +++++++++--------
 examples/server/public/index.js               |    1 +
 .../server/public/json-schema-to-grammar.mjs  |    6 +-
 tests/test-json-schema-to-grammar.cpp         |   40 +-
 7 files changed, 1553 insertions(+), 1488 deletions(-)

diff --git a/Makefile b/Makefile
index 4fbbf758ea92c..7c0fe3bd6848e 100644
--- a/Makefile
+++ b/Makefile
@@ -664,8 +664,6 @@ grammar-parser.o: common/grammar-parser.cpp common/grammar-parser.h
 
 json-schema-to-grammar.o: examples/server/json-schema-to-grammar.cpp examples/server/json-schema-to-grammar.h
 	$(CXX) $(CXXFLAGS) -c $< -o $@
-	# $(CXX) $(CXXFLAGS) -c $< -o $(call GET_OBJ_FILE, $<)  -DLLAMA_BUILD_JSON_SCHEMA_CONVERTER=1
-	# $(CXX) $(CXXFLAGS) $(filter-out %.h $<,$^) $(call GET_OBJ_FILE, $<) -o $@ $(LDFLAGS)
 
 train.o: common/train.cpp common/train.h
 	$(CXX) $(CXXFLAGS) -c $< -o $@
@@ -862,7 +860,7 @@ tests/test-double-float: tests/test-double-float.cpp ggml.o $(OBJS)
 	$(CXX) $(CXXFLAGS) -c $< -o $(call GET_OBJ_FILE, $<)
 	$(CXX) $(CXXFLAGS) $(filter-out %.h $<,$^) $(call GET_OBJ_FILE, $<) -o $@ $(LDFLAGS)
 
-tests/test-json-schema-to-grammar: tests/test-json-schema-to-grammar.cpp examples/server/json-schema-to-grammar.cpp examples/server/json-schema-to-grammar.h
+tests/test-json-schema-to-grammar: tests/test-json-schema-to-grammar.cpp ggml.o llama.o grammar-parser.o $(OBJS)
 	$(CXX) $(CXXFLAGS) -c $< -o $(call GET_OBJ_FILE, $<)
 	$(CXX) $(CXXFLAGS) $(filter-out %.h $<,$^) $(call GET_OBJ_FILE, $<) -o $@ $(LDFLAGS)
 
diff --git a/examples/json-schema-to-grammar.py b/examples/json-schema-to-grammar.py
index e66a948a5029e..ea54c88bc17f3 100755
--- a/examples/json-schema-to-grammar.py
+++ b/examples/json-schema-to-grammar.py
@@ -24,6 +24,7 @@
       )* "\"" space''',
     'null': '"null" space',
 }
+OBJECT_RULE_NAMES = ['object', 'array', 'string', 'number', 'boolean', 'null', 'value']
 
 # TODO: support "uri", "email" string formats
 DATE_RULES = {
@@ -384,11 +385,10 @@ def add_component(comp_schema, is_required):
         elif schema_type in (None, 'string') and 'pattern' in schema:
             return self._visit_pattern(schema['pattern'], rule_name)
 
-        elif schema_type == 'object' and len(schema) == 1 or schema_type is None and len(schema) == 0:
-            # This depends on all primitive types
-            for t, r in PRIMITIVE_RULES.items():
-                self._add_rule(t, r)
-            return 'object'
+        elif (schema_type == 'object' and len(schema) == 1) or (len(schema) == 0):
+            for n in OBJECT_RULE_NAMES:
+                self._add_rule(n, PRIMITIVE_RULES[n])
+            return self._add_rule(rule_name, 'object')
 
         elif schema_type in (None, 'string') and re.match(r'^uuid[1-5]?$', schema_format or ''):
             return self._add_rule(
@@ -427,7 +427,10 @@ def _build_object_rule(self, properties: List[Tuple[str, Any]], required: Set[st
         if additional_properties:
             sub_name = f'{name}{"-" if name else ""}additional'
             value_rule = self.visit(additional_properties, f'{sub_name}-value')
-            prop_kv_rule_names["*"] = self._add_rule(f'{sub_name}-kv', f'string ":" space {value_rule}')
+            prop_kv_rule_names["*"] = self._add_rule(
+                f'{sub_name}-kv',
+                self._add_rule('string', PRIMITIVE_RULES['string']) + f' ":" space {value_rule}'
+            )
             optional_props.append("*")
 
         rule = '"{" space '
diff --git a/examples/server/json-schema-to-grammar.cpp b/examples/server/json-schema-to-grammar.cpp
index 9481f513cfb6f..640890d46330d 100644
--- a/examples/server/json-schema-to-grammar.cpp
+++ b/examples/server/json-schema-to-grammar.cpp
@@ -33,7 +33,7 @@ unordered_map<string, string> PRIMITIVE_RULES = {
                "      )* \"\\\"\" space"},
     {"null", "\"null\" space"}
 };
-vector<string> OBJECT_RULE_NAMES = {"object", "array", "string", "number", "boolean", "null"};
+vector<string> OBJECT_RULE_NAMES = {"object", "array", "string", "number", "boolean", "null", "value"};
 
 unordered_map<string, string> DATE_RULES = {
     {"date", "[0-9] [0-9] [0-9] [0-9] \"-\" ( \"0\" [1-9] | \"1\" [0-2] ) \"-\" ( [0-2] [0-9] | \"3\" [0-1] )"},
@@ -416,7 +416,7 @@ class SchemaConverter {
         if (additional_properties.is_object()) {
             string sub_name = name + (name.empty() ? "" : "-") + "additional";
             string value_rule = visit(additional_properties, sub_name + "-value");
-            string kv_rule = _add_rule(sub_name + "-kv", "string \":\" space " + value_rule);
+            string kv_rule = _add_rule(sub_name + "-kv", _add_rule("string", PRIMITIVE_RULES.at("string")) + " \":\" space " + value_rule);
             prop_kv_rule_names["*"] = kv_rule;
             optional_props.push_back("*");
         }
diff --git a/examples/server/json-schema-to-grammar.mjs.hpp b/examples/server/json-schema-to-grammar.mjs.hpp
index d4fce5463e774..f1a4a9fb4fffe 100644
--- a/examples/server/json-schema-to-grammar.mjs.hpp
+++ b/examples/server/json-schema-to-grammar.mjs.hpp
@@ -70,1555 +70,1596 @@ unsigned char json_schema_to_grammar_mjs[] = {
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+  0x5b, 0x5d, 0x3b, 0x0a, 0x20, 0x20, 0x20, 0x20, 0x7d, 0x0a, 0x20, 0x20,
+  0x20, 0x20, 0x67, 0x72, 0x6f, 0x75, 0x70, 0x2e, 0x70, 0x75, 0x73, 0x68,
+  0x28, 0x65, 0x6c, 0x65, 0x6d, 0x65, 0x6e, 0x74, 0x29, 0x3b, 0x0a, 0x20,
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+  0x20, 0x6b, 0x65, 0x79, 0x3b, 0x0a, 0x20, 0x20, 0x7d, 0x0a, 0x20, 0x20,
+  0x69, 0x66, 0x20, 0x28, 0x67, 0x72, 0x6f, 0x75, 0x70, 0x2e, 0x6c, 0x65,
+  0x6e, 0x67, 0x74, 0x68, 0x20, 0x3e, 0x20, 0x30, 0x29, 0x20, 0x7b, 0x0a,
+  0x20, 0x20, 0x20, 0x20, 0x79, 0x69, 0x65, 0x6c, 0x64, 0x20, 0x5b, 0x6c,
+  0x61, 0x73, 0x74, 0x4b, 0x65, 0x79, 0x2c, 0x20, 0x67, 0x72, 0x6f, 0x75,
+  0x70, 0x5d, 0x3b, 0x0a, 0x20, 0x20, 0x7d, 0x0a, 0x7d, 0x0a
 };
-unsigned int json_schema_to_grammar_mjs_len = 19448;
+unsigned int json_schema_to_grammar_mjs_len = 19942;
diff --git a/examples/server/public/index.js b/examples/server/public/index.js
index e69de29bb2d1d..aa3ffb5e06be5 100644
--- a/examples/server/public/index.js
+++ b/examples/server/public/index.js
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diff --git a/examples/server/public/json-schema-to-grammar.mjs b/examples/server/public/json-schema-to-grammar.mjs
index 67354a2959cfd..59174bc6cfb6b 100644
--- a/examples/server/public/json-schema-to-grammar.mjs
+++ b/examples/server/public/json-schema-to-grammar.mjs
@@ -15,7 +15,7 @@ const PRIMITIVE_RULES = {
       )* "\\"" space`,
   null: '"null" space',
 };
-const OBJECT_RULE_NAMES = ['object', 'array', 'string', 'number', 'boolean', 'null'];
+const OBJECT_RULE_NAMES = ['object', 'array', 'string', 'number', 'boolean', 'null', 'value'];
 
 // TODO: support "uri", "email" string formats
 const DATE_RULES = {
@@ -467,7 +467,9 @@ export class SchemaConverter {
     if (typeof additionalProperties === 'object') {
       const subName = `${name ?? ''}${name ? '-' : ''}additional`;
       const valueRule = this.visit(additionalProperties, `${subName}-value`);
-      propKvRuleNames['*'] = this._addRule(`${subName}-kv`, `string ":" space ${valueRule}`);
+      propKvRuleNames['*'] = this._addRule(
+        `${subName}-kv`,
+        `${this._addRule('string', PRIMITIVE_RULES['string'])} ":" space ${valueRule}`);
       optionalProps.push('*');
     }
 
diff --git a/tests/test-json-schema-to-grammar.cpp b/tests/test-json-schema-to-grammar.cpp
index e0a80ea6c96b0..34bdcec49a08d 100755
--- a/tests/test-json-schema-to-grammar.cpp
+++ b/tests/test-json-schema-to-grammar.cpp
@@ -11,6 +11,8 @@
 #include "../examples/server/json-schema-to-grammar.h"
 #include "../examples/server/json-schema-to-grammar.cpp"
 
+#include "grammar-parser.h"
+
 using namespace std;
 
 static std::string trim(const std::string & source) {
@@ -30,7 +32,7 @@ struct TestCase {
   string schema;
   string expected;
 
-  void verify(const string& actual) const {
+  void verify(const string& actual, bool parse = false) const {
     if (trim(actual) != trim(expected)) {
       cerr << "#" << endl;
       cerr << "# Test '" << name.c_str() << "' failed." << endl;
@@ -40,6 +42,10 @@ struct TestCase {
       cerr << "# ACTUAL:\n" << actual.c_str() << endl;
       assert(false);
     }
+    if (parse) {
+      auto state = grammar_parser::parse(actual.c_str());
+      assert(state.symbol_ids.find("root") != state.symbol_ids.end());
+    }
   }
   void verify_status(TestCaseStatus status) const {
     if (status != expected_status) {
@@ -108,6 +114,7 @@ static void test_all(const string& lang, std::function<void(const TestCase&)> ru
               [^"\\] |
               "\\" (["\\/bfnrt] | "u" [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F])
             )* "\"" space
+      value ::= object | array | string | number | boolean
     )"""
   });
 
@@ -453,6 +460,10 @@ static void test_all(const string& lang, std::function<void(const TestCase&)> ru
       number ::= ("-"? ([0-9] | [1-9] [0-9]*)) ("." [0-9]+)? ([eE] [-+]? [0-9]+)? space
       root ::= "{" space  (additional-kvs )? "}" space
       space ::= " "?
+      string ::=  "\"" (
+              [^"\\] |
+              "\\" (["\\/bfnrt] | "u" [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F])
+            )* "\"" space
     )"""
   });
 
@@ -499,6 +510,10 @@ static void test_all(const string& lang, std::function<void(const TestCase&)> ru
       number ::= ("-"? ([0-9] | [1-9] [0-9]*)) ("." [0-9]+)? ([eE] [-+]? [0-9]+)? space
       root ::= "{" space  (a-kv a-rest | additional-kvs )? "}" space
       space ::= " "?
+      string ::=  "\"" (
+              [^"\\] |
+              "\\" (["\\/bfnrt] | "u" [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F])
+            )* "\"" space
     )"""
   });
 
@@ -523,6 +538,10 @@ static void test_all(const string& lang, std::function<void(const TestCase&)> ru
       number ::= ("-"? ([0-9] | [1-9] [0-9]*)) ("." [0-9]+)? ([eE] [-+]? [0-9]+)? space
       root ::= "{" space a-kv ( "," space ( b-kv b-rest | additional-kvs ) )? "}" space
       space ::= " "?
+      string ::=  "\"" (
+              [^"\\] |
+              "\\" (["\\/bfnrt] | "u" [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F])
+            )* "\"" space
     )"""
   });
 
@@ -606,6 +625,16 @@ static void test_all(const string& lang, std::function<void(const TestCase&)> ru
 }
 
 int main() {
+  test_all("C++", [](const TestCase& tc) {
+    try {
+      // We only try and parse the grammar output in the C++ test.
+      tc.verify(json_schema_to_grammar(nlohmann::json::parse(tc.schema)), /* parse= */ true);
+      tc.verify_status(SUCCESS);
+    } catch (const runtime_error& ex) {
+      cerr << "Error: " << ex.what() << endl;
+      tc.verify_status(FAILURE);
+    }
+  });
   test_all("Python", [](const TestCase& tc) {
     write("test-json-schema-input.tmp", tc.schema);
     tc.verify_status(std::system(
@@ -618,13 +647,4 @@ int main() {
       "node ./tests/run-json-schema-to-grammar.mjs test-json-schema-input.tmp > test-grammar-output.tmp") == 0 ? SUCCESS : FAILURE);
     tc.verify(read("test-grammar-output.tmp"));
   });
-  test_all("C++", [](const TestCase& tc) {
-    try {
-      tc.verify(json_schema_to_grammar(nlohmann::json::parse(tc.schema)));
-      tc.verify_status(SUCCESS);
-    } catch (const runtime_error& ex) {
-      cerr << "Error: " << ex.what() << endl;
-      tc.verify_status(FAILURE);
-    }
-  });
 }

From edbd2e98624cd725b4e0b8654dfa558c35a1dce0 Mon Sep 17 00:00:00 2001
From: ochafik <ochafik@google.com>
Date: Sun, 17 Mar 2024 22:51:29 +0000
Subject: [PATCH 78/98] json: add server tests for OAI JSON response_format

---
 examples/server/tests/features/security.feature | 16 ++++++++++++++++
 examples/server/tests/features/server.feature   | 16 ++++++++++++++++
 examples/server/tests/features/steps/steps.py   | 17 +++++++++++++++++
 examples/server/utils.hpp                       |  7 ++++---
 4 files changed, 53 insertions(+), 3 deletions(-)

diff --git a/examples/server/tests/features/security.feature b/examples/server/tests/features/security.feature
index 1d6aa40ea6985..eb82e7aca3cd9 100644
--- a/examples/server/tests/features/security.feature
+++ b/examples/server/tests/features/security.feature
@@ -37,6 +37,22 @@ Feature: Security
       | llama.cpp | no        |
       | hackme    | raised    |
 
+  Scenario Outline: OAI Compatibility (invalid response formats)
+    Given a system prompt test
+    And   a user prompt test
+    And   a response format <response_format>
+    And   a model test
+    And   2 max tokens to predict
+    And   streaming is disabled
+    Given an OAI compatible chat completions request with raised api error
+
+    Examples: Prompts
+      | response_format                                       |
+      | {"type": "sound"}                                     |
+      | {"type": "json_object", "schema": 123}                |
+      | {"type": "json_object", "schema": {"type": 123}}      |
+      | {"type": "json_object", "schema": {"type": "hiccup"}} |
+
 
   Scenario Outline: CORS Options
     Given a user api key llama.cpp
diff --git a/examples/server/tests/features/server.feature b/examples/server/tests/features/server.feature
index 5014f326dc050..4ecc41d523aa0 100644
--- a/examples/server/tests/features/server.feature
+++ b/examples/server/tests/features/server.feature
@@ -69,6 +69,22 @@ Feature: llama.cpp server
       | codellama70b | You are a coding assistant. | Write the fibonacci function in c++. | 128        | (thanks\|happy\|bird)+ | -1       | 64          | enabled          |           |
 
 
+  Scenario Outline: OAI Compatibility w/ response format
+    Given a model test
+    And   a system prompt test
+    And   a user prompt test
+    And   a response format <response_format>
+    And   10 max tokens to predict
+    Given an OAI compatible chat completions request with no api error
+    Then  <n_predicted> tokens are predicted matching <re_content>
+
+    Examples: Prompts
+      | response_format                                                     | n_predicted | re_content             |
+      | {"type": "json_object", "schema": {"const": "42"}}                  | 5           | "42"                   |
+      | {"type": "json_object", "schema": {"items": [{"type": "integer"}]}} | 10          | \[ -300 \]             |
+      | {"type": "json_object"}                                             | 10          | \{ " said the other an |
+
+
   Scenario: Tokenize / Detokenize
     When tokenizing:
     """
diff --git a/examples/server/tests/features/steps/steps.py b/examples/server/tests/features/steps/steps.py
index a59a52d21748a..2bebcb71b0099 100644
--- a/examples/server/tests/features/steps/steps.py
+++ b/examples/server/tests/features/steps/steps.py
@@ -52,6 +52,7 @@ def step_server_config(context, server_fqdn, server_port):
     context.seed = None
     context.server_seed = None
     context.user_api_key = None
+    context.response_format = None
 
     context.tasks_result = []
     context.concurrent_tasks = []
@@ -248,6 +249,11 @@ def step_max_tokens(context, max_tokens):
     context.n_predict = max_tokens
 
 
+@step('a response format {response_format}')
+def step_response_format(context, response_format):
+    context.response_format = json.loads(response_format)
+
+
 @step('streaming is {enable_streaming}')
 def step_streaming(context, enable_streaming):
     context.enable_streaming = enable_streaming == 'enabled'
@@ -363,6 +369,9 @@ async def step_oai_chat_completions(context, api_error):
                                             enable_streaming=context.enable_streaming
                                             if hasattr(context, 'enable_streaming') else None,
 
+                                            response_format=context.response_format
+                                            if hasattr(context, 'response_format') else None,
+
                                             seed=await completions_seed(context),
 
                                             user_api_key=context.user_api_key
@@ -422,6 +431,8 @@ async def step_oai_chat_completions(context):
                               if hasattr(context, 'n_predict') else None,
                               enable_streaming=context.enable_streaming
                               if hasattr(context, 'enable_streaming') else None,
+                              response_format=context.response_format
+                              if hasattr(context, 'response_format') else None,
                               seed=await completions_seed(context),
                               user_api_key=context.user_api_key
                               if hasattr(context, 'user_api_key') else None)
@@ -442,6 +453,8 @@ async def step_oai_chat_completions(context):
                               if hasattr(context, 'n_predict') else None,
                               enable_streaming=context.enable_streaming
                               if hasattr(context, 'enable_streaming') else None,
+                              response_format=context.response_format
+                              if hasattr(context, 'response_format') else None,
                               seed=context.seed
                               if hasattr(context, 'seed') else
                               context.server_seed
@@ -724,6 +737,7 @@ async def oai_chat_completions(user_prompt,
                                model=None,
                                n_predict=None,
                                enable_streaming=None,
+                               response_format=None,
                                seed=None,
                                user_api_key=None,
                                expect_api_error=None):
@@ -749,6 +763,8 @@ async def oai_chat_completions(user_prompt,
         "stream": enable_streaming,
         "seed": seed
     }
+    if response_format is not None:
+        payload['response_format'] = response_format
     completion_response = {
         'content': '',
         'timings': {
@@ -809,6 +825,7 @@ async def oai_chat_completions(user_prompt,
                 model=model,
                 max_tokens=n_predict,
                 stream=enable_streaming,
+                response_format=payload.get('response_format'),
                 seed=seed
             )
         except openai.error.AuthenticationError as e:
diff --git a/examples/server/utils.hpp b/examples/server/utils.hpp
index 6591e84a1710a..e976ebda69c3c 100644
--- a/examples/server/utils.hpp
+++ b/examples/server/utils.hpp
@@ -376,11 +376,12 @@ static json oaicompat_completion_params_parse(
         llama_params["grammar"] = json_value(body, "grammar", json::object());
     }
 
-    if (body.contains("response_format")) {
+    if (!body["response_format"].is_null()) {
       auto response_format = json_value(body, "response_format", json::object());
-      if (response_format.contains("schema") && response_format["type"] == "json_object") {
+      if (response_format["type"] == "json_object") {
         llama_params["json_schema"] = json_value(response_format, "schema", json::object());
-        std::cerr << "GOT " << llama_params["json_schema"] << std::endl;
+      } else {
+        throw std::runtime_error("response_format type not supported: " + response_format["type"].dump());
       }
     }
 

From 618247885c7d367704a951993157b4630781dfec Mon Sep 17 00:00:00 2001
From: ochafik <ochafik@google.com>
Date: Mon, 18 Mar 2024 00:13:58 +0000
Subject: [PATCH 79/98] json: test/fix top-level anyOf

---
 examples/json-schema-to-grammar.py            |  2 +-
 examples/server/json-schema-to-grammar.cpp    |  7 +-
 .../server/json-schema-to-grammar.mjs.hpp     |  5 +-
 .../server/public/json-schema-to-grammar.mjs  |  2 +-
 examples/ts-type-to-grammar.sh                |  2 +-
 tests/test-json-schema-to-grammar.cpp         | 73 +++++++++++++++++++
 6 files changed, 84 insertions(+), 7 deletions(-)

diff --git a/examples/json-schema-to-grammar.py b/examples/json-schema-to-grammar.py
index ea54c88bc17f3..5ad8e52f6c792 100755
--- a/examples/json-schema-to-grammar.py
+++ b/examples/json-schema-to-grammar.py
@@ -128,7 +128,7 @@ def visit(n: dict):
 
     def _generate_union_rule(self, name, alt_schemas):
         return ' | '.join((
-            self.visit(alt_schema, f'{name}{"-" if name else ""}{i}')
+            self.visit(alt_schema, f'{name}{"-" if name else "alternative-"}{i}')
             for i, alt_schema in enumerate(alt_schemas)
         ))
 
diff --git a/examples/server/json-schema-to-grammar.cpp b/examples/server/json-schema-to-grammar.cpp
index 640890d46330d..bb2c58d482b7b 100644
--- a/examples/server/json-schema-to-grammar.cpp
+++ b/examples/server/json-schema-to-grammar.cpp
@@ -170,7 +170,7 @@ class SchemaConverter {
     string _generate_union_rule(const string& name, const vector<json>& alt_schemas) {
         vector<string> rules;
         for (size_t i = 0; i < alt_schemas.size(); i++) {
-            rules.push_back(visit(alt_schemas[i], name + (name.empty() ? "" : "-") + to_string(i)));
+            rules.push_back(visit(alt_schemas[i], name + (name.empty() ? "alternative-" : "-") + to_string(i)));
         }
         return join(rules.begin(), rules.end(), " | ");
     }
@@ -596,7 +596,10 @@ class SchemaConverter {
                     properties.emplace_back(prop.key(), prop.value());
                 }
             }
-            return _add_rule(rule_name, _build_object_rule(properties, required, name, schema["additionalProperties"]));
+            return _add_rule(rule_name,
+                _build_object_rule(
+                    properties, required, name,
+                    schema.contains("additionalProperties") ? schema["additionalProperties"] : json()));
         } else if ((schema_type.is_null() || schema_type == "object") && schema.contains("allOf")) {
             unordered_set<string> required;
             vector<pair<string, json>> properties;
diff --git a/examples/server/json-schema-to-grammar.mjs.hpp b/examples/server/json-schema-to-grammar.mjs.hpp
index f1a4a9fb4fffe..e6dacb0356bb5 100644
--- a/examples/server/json-schema-to-grammar.mjs.hpp
+++ b/examples/server/json-schema-to-grammar.mjs.hpp
@@ -406,7 +406,8 @@ unsigned char json_schema_to_grammar_mjs[] = {
   0x73, 0x69, 0x74, 0x28, 0x61, 0x6c, 0x74, 0x53, 0x63, 0x68, 0x65, 0x6d,
   0x61, 0x2c, 0x20, 0x60, 0x24, 0x7b, 0x6e, 0x61, 0x6d, 0x65, 0x20, 0x3f,
   0x3f, 0x20, 0x27, 0x27, 0x7d, 0x24, 0x7b, 0x6e, 0x61, 0x6d, 0x65, 0x20,
-  0x3f, 0x20, 0x27, 0x2d, 0x27, 0x20, 0x3a, 0x20, 0x27, 0x27, 0x7d, 0x24,
+  0x3f, 0x20, 0x27, 0x2d, 0x27, 0x20, 0x3a, 0x20, 0x27, 0x61, 0x6c, 0x74,
+  0x65, 0x72, 0x6e, 0x61, 0x74, 0x69, 0x76, 0x65, 0x2d, 0x27, 0x7d, 0x24,
   0x7b, 0x69, 0x7d, 0x60, 0x29, 0x29, 0x0a, 0x20, 0x20, 0x20, 0x20, 0x20,
   0x20, 0x2e, 0x6a, 0x6f, 0x69, 0x6e, 0x28, 0x27, 0x20, 0x7c, 0x20, 0x27,
   0x29, 0x3b, 0x0a, 0x20, 0x20, 0x7d, 0x0a, 0x0a, 0x20, 0x20, 0x5f, 0x76,
@@ -1662,4 +1663,4 @@ unsigned char json_schema_to_grammar_mjs[] = {
   0x61, 0x73, 0x74, 0x4b, 0x65, 0x79, 0x2c, 0x20, 0x67, 0x72, 0x6f, 0x75,
   0x70, 0x5d, 0x3b, 0x0a, 0x20, 0x20, 0x7d, 0x0a, 0x7d, 0x0a
 };
-unsigned int json_schema_to_grammar_mjs_len = 19942;
+unsigned int json_schema_to_grammar_mjs_len = 19954;
diff --git a/examples/server/public/json-schema-to-grammar.mjs b/examples/server/public/json-schema-to-grammar.mjs
index 59174bc6cfb6b..76fe5c64c842b 100644
--- a/examples/server/public/json-schema-to-grammar.mjs
+++ b/examples/server/public/json-schema-to-grammar.mjs
@@ -138,7 +138,7 @@ export class SchemaConverter {
 
   _generateUnionRule(name, altSchemas) {
     return altSchemas
-      .map((altSchema, i) => this.visit(altSchema, `${name ?? ''}${name ? '-' : ''}${i}`))
+      .map((altSchema, i) => this.visit(altSchema, `${name ?? ''}${name ? '-' : 'alternative-'}${i}`))
       .join(' | ');
   }
 
diff --git a/examples/ts-type-to-grammar.sh b/examples/ts-type-to-grammar.sh
index db4881f261821..82550855ca22c 100755
--- a/examples/ts-type-to-grammar.sh
+++ b/examples/ts-type-to-grammar.sh
@@ -19,7 +19,7 @@ echo "export type MyType = $type" > "$DTS_FILE"
 
 # This is a fork of typescript-json-schema, actively maintained as of March 2024:
 # https://github.com/vega/ts-json-schema-generator
-npx ts-json-schema-generator --unstable --no-top-ref --path "$DTS_FILE" --type MyType -e none | tee "$SCHEMA_FILE" >&2
+npx ts-json-schema-generator --unstable --no-top-ref --path "$DTS_FILE" --type MyType -e none > "$SCHEMA_FILE"
 
 # Alternative, not actively maintained as of March 2024:
 # https://github.com/YousefED/typescript-json-schema
diff --git a/tests/test-json-schema-to-grammar.cpp b/tests/test-json-schema-to-grammar.cpp
index 34bdcec49a08d..87b5b655f5c8b 100755
--- a/tests/test-json-schema-to-grammar.cpp
+++ b/tests/test-json-schema-to-grammar.cpp
@@ -577,6 +577,79 @@ static void test_all(const string& lang, std::function<void(const TestCase&)> ru
     )"""
   });
 
+  test({
+    SUCCESS,
+    "anyOf",
+    R"""({
+      "anyOf": [
+        {"$ref": "#/definitions/foo"},
+        {"$ref": "#/definitions/bar"}
+      ],
+      "definitions": {
+        "foo": {
+          "properties": {"a": {"type": "number"}}
+        },
+        "bar": {
+          "properties": {"b": {"type": "number"}}
+        }
+      },
+      "type": "object"
+    })""",
+    R"""(
+      alternative-0 ::= foo
+      alternative-1 ::= bar
+      bar ::= "{" space  (bar-b-kv )? "}" space
+      bar-b-kv ::= "\"b\"" space ":" space number
+      foo ::= "{" space  (foo-a-kv )? "}" space
+      foo-a-kv ::= "\"a\"" space ":" space number
+      number ::= ("-"? ([0-9] | [1-9] [0-9]*)) ("." [0-9]+)? ([eE] [-+]? [0-9]+)? space
+      root ::= alternative-0 | alternative-1
+      space ::= " "?
+    )"""
+  });
+
+  test({
+    SUCCESS,
+    "mix of allOf, anyOf and $ref (similar to https://json.schemastore.org/tsconfig.json)",
+    R"""({
+      "allOf": [ 
+        {"$ref": "#/definitions/foo"},
+        {"$ref": "#/definitions/bar"},
+        {
+          "anyOf": [
+            {"$ref": "#/definitions/baz"},
+            {"$ref": "#/definitions/bam"}
+          ]
+        }
+      ],
+      "definitions": {
+        "foo": {
+          "properties": {"a": {"type": "number"}}
+        },
+        "bar": {
+          "properties": {"b": {"type": "number"}}
+        },
+        "bam": {
+          "properties": {"c": {"type": "number"}}
+        },
+        "baz": {
+          "properties": {"d": {"type": "number"}}
+        }
+      },
+      "type": "object"
+    })""",
+    R"""(
+      a-kv ::= "\"a\"" space ":" space number
+      b-kv ::= "\"b\"" space ":" space number
+      c-kv ::= "\"c\"" space ":" space number
+      d-kv ::= "\"d\"" space ":" space number
+      d-rest ::= ( "," space c-kv )?
+      number ::= ("-"? ([0-9] | [1-9] [0-9]*)) ("." [0-9]+)? ([eE] [-+]? [0-9]+)? space
+      root ::= "{" space a-kv "," space b-kv ( "," space ( d-kv d-rest | c-kv ) )? "}" space
+      space ::= " "?
+    )"""
+  });
+
   test({
     SUCCESS,
     "conflicting names",

From bbd70800c81a65576d6bd6dc8f46aa293ba5aa9d Mon Sep 17 00:00:00 2001
From: ochafik <ochafik@google.com>
Date: Mon, 18 Mar 2024 00:34:02 +0000
Subject: [PATCH 80/98] json: improve grammar parsing failures

---
 tests/test-json-schema-to-grammar.cpp | 52 ++++++++++++++++-----------
 1 file changed, 32 insertions(+), 20 deletions(-)

diff --git a/tests/test-json-schema-to-grammar.cpp b/tests/test-json-schema-to-grammar.cpp
index 87b5b655f5c8b..d770f07de5001 100755
--- a/tests/test-json-schema-to-grammar.cpp
+++ b/tests/test-json-schema-to-grammar.cpp
@@ -30,29 +30,37 @@ struct TestCase {
   TestCaseStatus expected_status;
   string name;
   string schema;
-  string expected;
-
-  void verify(const string& actual, bool parse = false) const {
-    if (trim(actual) != trim(expected)) {
-      cerr << "#" << endl;
-      cerr << "# Test '" << name.c_str() << "' failed." << endl;
-      cerr << "#" << endl;
-      cerr << schema.c_str() << endl;
-      cerr << "# EXPECTED:\n" << expected.c_str() << endl;
-      cerr << "# ACTUAL:\n" << actual.c_str() << endl;
+  string expected_grammar;
+
+  void _print_failure_header() const {
+    cerr << "#" << endl;
+    cerr << "# Test '" << name.c_str() << "' failed." << endl;
+    cerr << "#" << endl;
+    cerr << schema.c_str() << endl;
+  }
+  void verify(const string& actual_grammar) const {
+    if (trim(actual_grammar) != trim(expected_grammar)) {
+      _print_failure_header();
+      cerr << "# EXPECTED:\n" << expected_grammar.c_str() << endl;
+      cerr << "# ACTUAL:\n" << actual_grammar.c_str() << endl;
       assert(false);
     }
-    if (parse) {
-      auto state = grammar_parser::parse(actual.c_str());
-      assert(state.symbol_ids.find("root") != state.symbol_ids.end());
+  }
+  void verify_expectation_parseable() const {
+    try {
+      auto state = grammar_parser::parse(expected_grammar.c_str());
+      if (state.symbol_ids.find("root") == state.symbol_ids.end()) {
+        throw runtime_error("Grammar failed to parse:\n" + expected_grammar);
+      }
+    } catch (const runtime_error& ex) {
+      _print_failure_header();
+      cerr << "# GRAMMAR ERROR: " << ex.what() << endl;
+      assert(false);
     }
   }
   void verify_status(TestCaseStatus status) const {
     if (status != expected_status) {
-      cerr << "#" << endl;
-      cerr << "# Test '" << name.c_str() << "' failed." << endl;
-      cerr << "#" << endl;
-      cerr << schema.c_str() << endl;
+      _print_failure_header();
       cerr << "# EXPECTED STATUS: " << (expected_status == SUCCESS ? "SUCCESS" : "FAILURE") << endl;
       cerr << "# ACTUAL STATUS: " << (status == SUCCESS ? "SUCCESS" : "FAILURE") << endl;
       assert(false);
@@ -612,7 +620,7 @@ static void test_all(const string& lang, std::function<void(const TestCase&)> ru
     SUCCESS,
     "mix of allOf, anyOf and $ref (similar to https://json.schemastore.org/tsconfig.json)",
     R"""({
-      "allOf": [ 
+      "allOf": [
         {"$ref": "#/definitions/foo"},
         {"$ref": "#/definitions/bar"},
         {
@@ -700,8 +708,7 @@ static void test_all(const string& lang, std::function<void(const TestCase&)> ru
 int main() {
   test_all("C++", [](const TestCase& tc) {
     try {
-      // We only try and parse the grammar output in the C++ test.
-      tc.verify(json_schema_to_grammar(nlohmann::json::parse(tc.schema)), /* parse= */ true);
+      tc.verify(json_schema_to_grammar(nlohmann::json::parse(tc.schema)));
       tc.verify_status(SUCCESS);
     } catch (const runtime_error& ex) {
       cerr << "Error: " << ex.what() << endl;
@@ -720,4 +727,9 @@ int main() {
       "node ./tests/run-json-schema-to-grammar.mjs test-json-schema-input.tmp > test-grammar-output.tmp") == 0 ? SUCCESS : FAILURE);
     tc.verify(read("test-grammar-output.tmp"));
   });
+  test_all("Check Expectations Validity", [](const TestCase& tc) {
+    if (tc.expected_status == SUCCESS) {
+      tc.verify_expectation_parseable();
+    }
+  });
 }

From dd922a4da38f14776a3c7d3971a2c5f66f319588 Mon Sep 17 00:00:00 2001
From: ochafik <ochafik@google.com>
Date: Mon, 18 Mar 2024 01:32:15 +0000
Subject: [PATCH 81/98] json: test/fix additional props corner cases

---
 examples/json-schema-to-grammar.py            |   18 +-
 examples/server/json-schema-to-grammar.cpp    |   17 +-
 .../server/json-schema-to-grammar.mjs.hpp     | 1167 ++++++++---------
 examples/server/public/index.js               |    1 -
 .../server/public/json-schema-to-grammar.mjs  |   13 +-
 examples/ts-type-to-grammar.sh                |    2 +-
 tests/test-json-schema-to-grammar.cpp         |   61 +
 7 files changed, 669 insertions(+), 610 deletions(-)

diff --git a/examples/json-schema-to-grammar.py b/examples/json-schema-to-grammar.py
index 5ad8e52f6c792..46c20d68adca1 100755
--- a/examples/json-schema-to-grammar.py
+++ b/examples/json-schema-to-grammar.py
@@ -325,7 +325,9 @@ def visit(self, schema, name):
             rule = ' | '.join((self._generate_constant_rule(v) for v in schema['enum']))
             return self._add_rule(rule_name, rule)
 
-        elif schema_type in (None, 'object') and ('properties' in schema or 'additionalProperties' in schema):
+        elif schema_type in (None, 'object') and \
+             ('properties' in schema or \
+              ('additionalProperties' in schema and schema['additionalProperties'] is not True)):
             required = set(schema.get('required', []))
             properties = list(schema.get('properties', {}).items())
             return self._add_rule(rule_name, self._build_object_rule(properties, required, name, schema.get('additionalProperties')))
@@ -385,11 +387,6 @@ def add_component(comp_schema, is_required):
         elif schema_type in (None, 'string') and 'pattern' in schema:
             return self._visit_pattern(schema['pattern'], rule_name)
 
-        elif (schema_type == 'object' and len(schema) == 1) or (len(schema) == 0):
-            for n in OBJECT_RULE_NAMES:
-                self._add_rule(n, PRIMITIVE_RULES[n])
-            return self._add_rule(rule_name, 'object')
-
         elif schema_type in (None, 'string') and re.match(r'^uuid[1-5]?$', schema_format or ''):
             return self._add_rule(
                 'root' if rule_name == 'root' else schema_format,
@@ -401,6 +398,11 @@ def add_component(comp_schema, is_required):
                 self._add_rule(t, r)
             return schema_format + '-string'
 
+        elif (schema_type == 'object') or (len(schema) == 0):
+            for n in OBJECT_RULE_NAMES:
+                self._add_rule(n, PRIMITIVE_RULES[n])
+            return self._add_rule(rule_name, 'object')
+
         else:
             assert schema_type in PRIMITIVE_RULES, f'Unrecognized schema: {schema}'
             # TODO: support minimum, maximum, exclusiveMinimum, exclusiveMaximum at least for zero
@@ -424,9 +426,9 @@ def _build_object_rule(self, properties: List[Tuple[str, Any]], required: Set[st
         required_props = [k for k in sorted_props if k in required]
         optional_props = [k for k in sorted_props if k not in required]
 
-        if additional_properties:
+        if additional_properties == True or isinstance(additional_properties, dict):
             sub_name = f'{name}{"-" if name else ""}additional'
-            value_rule = self.visit(additional_properties, f'{sub_name}-value')
+            value_rule = self.visit({} if additional_properties == True else additional_properties, f'{sub_name}-value')
             prop_kv_rule_names["*"] = self._add_rule(
                 f'{sub_name}-kv',
                 self._add_rule('string', PRIMITIVE_RULES['string']) + f' ":" space {value_rule}'
diff --git a/examples/server/json-schema-to-grammar.cpp b/examples/server/json-schema-to-grammar.cpp
index bb2c58d482b7b..4d7322c37c04d 100644
--- a/examples/server/json-schema-to-grammar.cpp
+++ b/examples/server/json-schema-to-grammar.cpp
@@ -413,9 +413,9 @@ class SchemaConverter {
                 optional_props.push_back(prop_name);
             }
         }
-        if (additional_properties.is_object()) {
+        if (additional_properties.is_object() || (additional_properties.is_boolean() && additional_properties.get<bool>())) {
             string sub_name = name + (name.empty() ? "" : "-") + "additional";
-            string value_rule = visit(additional_properties, sub_name + "-value");
+            string value_rule = visit(additional_properties.is_object() ? additional_properties : json::object(), sub_name + "-value");
             string kv_rule = _add_rule(sub_name + "-kv", _add_rule("string", PRIMITIVE_RULES.at("string")) + " \":\" space " + value_rule);
             prop_kv_rule_names["*"] = kv_rule;
             optional_props.push_back("*");
@@ -581,7 +581,8 @@ class SchemaConverter {
             }
             return _add_rule(rule_name, join(enum_values.begin(), enum_values.end(), " | "));
         } else if ((schema_type.is_null() || schema_type == "object")
-                && (schema.contains("properties") || schema.contains("additionalProperties"))) {
+                && (schema.contains("properties") ||
+                    (schema.contains("additionalProperties") && schema["additionalProperties"] != true))) {
             unordered_set<string> required;
             if (schema.contains("required") && schema["required"].is_array()) {
                 for (const auto& item : schema["required"]) {
@@ -666,11 +667,6 @@ class SchemaConverter {
             }
         } else if ((schema_type.is_null() || schema_type == "string") && schema.contains("pattern")) {
             return _visit_pattern(schema["pattern"], rule_name);
-        } else if (schema.empty() || (schema.size() == 1 && schema_type == "object")) {
-            for (const auto& n : OBJECT_RULE_NAMES) {
-                _add_rule(n, PRIMITIVE_RULES.at(n));
-            }
-            return _add_rule(rule_name, "object");
         } else if ((schema_type.is_null() || schema_type == "string") && regex_match(schema_format, regex("^uuid[1-5]?$"))) {
             return _add_rule(rule_name == "root" ? "root" : schema_format, PRIMITIVE_RULES.at("uuid"));
         } else if ((schema_type.is_null() || schema_type == "string") && DATE_RULES.find(schema_format) != DATE_RULES.end()) {
@@ -678,6 +674,11 @@ class SchemaConverter {
                 _add_rule(kv.first, kv.second);
             }
             return schema_format + "-string";
+        } else if (schema.empty() || schema_type == "object") {
+            for (const auto& n : OBJECT_RULE_NAMES) {
+                _add_rule(n, PRIMITIVE_RULES.at(n));
+            }
+            return _add_rule(rule_name, "object");
         } else {
             if (!schema_type.is_string() || PRIMITIVE_RULES.find(schema_type.get<string>()) == PRIMITIVE_RULES.end()) {
               _errors.push_back("Unrecognized schema: " + schema.dump());
diff --git a/examples/server/json-schema-to-grammar.mjs.hpp b/examples/server/json-schema-to-grammar.mjs.hpp
index e6dacb0356bb5..3390e409cc20a 100644
--- a/examples/server/json-schema-to-grammar.mjs.hpp
+++ b/examples/server/json-schema-to-grammar.mjs.hpp
@@ -1061,606 +1061,603 @@ unsigned char json_schema_to_grammar_mjs[] = {
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+  0x7d, 0x0a
 };
-unsigned int json_schema_to_grammar_mjs_len = 19954;
+unsigned int json_schema_to_grammar_mjs_len = 19910;
diff --git a/examples/server/public/index.js b/examples/server/public/index.js
index aa3ffb5e06be5..e69de29bb2d1d 100644
--- a/examples/server/public/index.js
+++ b/examples/server/public/index.js
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diff --git a/examples/server/public/json-schema-to-grammar.mjs b/examples/server/public/json-schema-to-grammar.mjs
index 76fe5c64c842b..86572106fa544 100644
--- a/examples/server/public/json-schema-to-grammar.mjs
+++ b/examples/server/public/json-schema-to-grammar.mjs
@@ -353,7 +353,9 @@ export class SchemaConverter {
     } else if ('enum' in schema) {
       const rule = schema.enum.map(v => this._generateConstantRule(v)).join(' | ');
       return this._addRule(ruleName, rule);
-    } else if ((schemaType === undefined || schemaType === 'object') && ('properties' in schema || 'additionalProperties' in schema)) {
+    } else if ((schemaType === undefined || schemaType === 'object') &&
+               ('properties' in schema ||
+                ('additionalProperties' in schema && schema.additionalProperties !== true))) {
       const required = new Set(schema.required || []);
       const properties = Object.entries(schema.properties ?? {});
       return this._addRule(ruleName, this._buildObjectRule(properties, required, name, schema.additionalProperties));
@@ -427,7 +429,7 @@ export class SchemaConverter {
         this._addRule(t, r);
       }
       return schemaFormat + '-string';
-    } else if ((schemaType === 'object' && Object.keys(schema).length === 1) || (Object.keys(schema).length === 0)) {
+    } else if ((schemaType === 'object') || (Object.keys(schema).length === 0)) {
       for (const n of OBJECT_RULE_NAMES) {
         this._addRule(n, PRIMITIVE_RULES[n]);
       }
@@ -449,9 +451,6 @@ export class SchemaConverter {
       const orderB = propOrder[b] || Infinity;
       return orderA - orderB || properties.findIndex(([k]) => k === a) - properties.findIndex(([k]) => k === b);
     });
-    // const sortedProps = properties.map(([name]) => name).sort(
-    //   (a, b) => (propOrder[a] ?? Infinity) - (propOrder[b] ?? Infinity)
-    // );
 
     const propKvRuleNames = {};
     for (const [propName, propSchema] of properties) {
@@ -464,9 +463,9 @@ export class SchemaConverter {
     const requiredProps = sortedProps.filter(k => required.has(k));
     const optionalProps = sortedProps.filter(k => !required.has(k));
 
-    if (typeof additionalProperties === 'object') {
+    if (typeof additionalProperties === 'object' || additionalProperties === true) {
       const subName = `${name ?? ''}${name ? '-' : ''}additional`;
-      const valueRule = this.visit(additionalProperties, `${subName}-value`);
+      const valueRule = this.visit(additionalProperties === true ? {} : additionalProperties, `${subName}-value`);
       propKvRuleNames['*'] = this._addRule(
         `${subName}-kv`,
         `${this._addRule('string', PRIMITIVE_RULES['string'])} ":" space ${valueRule}`);
diff --git a/examples/ts-type-to-grammar.sh b/examples/ts-type-to-grammar.sh
index 82550855ca22c..a7ad001737c25 100755
--- a/examples/ts-type-to-grammar.sh
+++ b/examples/ts-type-to-grammar.sh
@@ -1,7 +1,7 @@
 #!/bin/bash
 #
 # ./examples/ts-type-to-grammar.sh "{a:string,b:string,c?:string}"
-# python examples/json-schema-to-grammar.py https://raw.githubusercontent.com/SchemaStore/schemastore/master/src/schemas/json/tsconfig.json
+# python examples/json-schema-to-grammar.py https://json.schemastore.org/tsconfig.json
 #
 set -euo pipefail
 
diff --git a/tests/test-json-schema-to-grammar.cpp b/tests/test-json-schema-to-grammar.cpp
index d770f07de5001..34648cb28cb36 100755
--- a/tests/test-json-schema-to-grammar.cpp
+++ b/tests/test-json-schema-to-grammar.cpp
@@ -475,6 +475,64 @@ static void test_all(const string& lang, std::function<void(const TestCase&)> ru
     )"""
   });
 
+  test({
+    SUCCESS,
+    "additional props (true)",
+    R"""({
+      "type": "object",
+      "additionalProperties": true
+    })""",
+    R"""(
+      array ::= "[" space ( value ("," space value)* )? "]" space
+      boolean ::= ("true" | "false") space
+      null ::= "null" space
+      number ::= ("-"? ([0-9] | [1-9] [0-9]*)) ("." [0-9]+)? ([eE] [-+]? [0-9]+)? space
+      object ::= "{" space ( string ":" space value ("," space string ":" space value)* )? "}" space
+      root ::= object
+      space ::= " "?
+      string ::=  "\"" (
+              [^"\\] |
+              "\\" (["\\/bfnrt] | "u" [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F])
+            )* "\"" space
+      value ::= object | array | string | number | boolean
+    )"""
+  });
+
+  test({
+    SUCCESS,
+    "additional props (implicit)",
+    R"""({
+      "type": "object"
+    })""",
+    R"""(
+      array ::= "[" space ( value ("," space value)* )? "]" space
+      boolean ::= ("true" | "false") space
+      null ::= "null" space
+      number ::= ("-"? ([0-9] | [1-9] [0-9]*)) ("." [0-9]+)? ([eE] [-+]? [0-9]+)? space
+      object ::= "{" space ( string ":" space value ("," space string ":" space value)* )? "}" space
+      root ::= object
+      space ::= " "?
+      string ::=  "\"" (
+              [^"\\] |
+              "\\" (["\\/bfnrt] | "u" [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F])
+            )* "\"" space
+      value ::= object | array | string | number | boolean
+    )"""
+  });
+
+  test({
+    SUCCESS,
+    "empty w/o additional props",
+    R"""({
+      "type": "object",
+      "additionalProperties": false
+    })""",
+    R"""(
+      root ::= "{" space  "}" space
+      space ::= " "?
+    )"""
+  });
+
   test({
     SUCCESS,
     "required + additional props",
@@ -716,17 +774,20 @@ int main() {
     }
   });
   test_all("Python", [](const TestCase& tc) {
+
     write("test-json-schema-input.tmp", tc.schema);
     tc.verify_status(std::system(
       "python ./examples/json-schema-to-grammar.py test-json-schema-input.tmp > test-grammar-output.tmp") == 0 ? SUCCESS : FAILURE);
     tc.verify(read("test-grammar-output.tmp"));
   });
   test_all("JavaScript", [](const TestCase& tc) {
+
     write("test-json-schema-input.tmp", tc.schema);
     tc.verify_status(std::system(
       "node ./tests/run-json-schema-to-grammar.mjs test-json-schema-input.tmp > test-grammar-output.tmp") == 0 ? SUCCESS : FAILURE);
     tc.verify(read("test-grammar-output.tmp"));
   });
+
   test_all("Check Expectations Validity", [](const TestCase& tc) {
     if (tc.expected_status == SUCCESS) {
       tc.verify_expectation_parseable();

From 24f0b941cf18ba36bc272190aa4e7c12bd22cfd9 Mon Sep 17 00:00:00 2001
From: ochafik <ochafik@google.com>
Date: Mon, 18 Mar 2024 04:06:23 +0000
Subject: [PATCH 82/98] json: fix string patterns (was missing quotes)

---
 examples/json-schema-to-grammar.py            |   86 +-
 examples/regex-to-grammar.py                  |    1 +
 examples/server/json-schema-to-grammar.cpp    |   93 +-
 .../server/json-schema-to-grammar.mjs.hpp     | 2789 +++++++++--------
 examples/server/public/index.js               |    1 +
 .../server/public/json-schema-to-grammar.mjs  |   54 +-
 tests/test-json-schema-to-grammar.cpp         |   41 +-
 7 files changed, 1572 insertions(+), 1493 deletions(-)

diff --git a/examples/json-schema-to-grammar.py b/examples/json-schema-to-grammar.py
index 46c20d68adca1..0311fe7152ff2 100755
--- a/examples/json-schema-to-grammar.py
+++ b/examples/json-schema-to-grammar.py
@@ -44,16 +44,17 @@
 GRAMMAR_LITERAL_ESCAPES = {'\r': '\\r', '\n': '\\n', '"': '\\"', '-': '\\-', ']': '\\]'}
 
 NON_LITERAL_SET = set('|.()[]{}*+?')
-ESCAPED_IN_REGEXPS_BUT_NOT_IN_LITERALS = set('{*+?')
+ESCAPED_IN_REGEXPS_BUT_NOT_IN_LITERALS = set('[]()|{}*+?')
 
 DATE_PATTERN = '[0-9]{4}-(0[1-9]|1[0-2])-([0-2][0-9]|3[0-1])'
 TIME_PATTERN = '([01][0-9]|2[0-3])(:[0-5][0-9]){2}(\\.[0-9]{1,3})?(Z|[+-](([01][0-9]|2[0-3]):[0-5][0-9]))' # Cap millisecond precision w/ 3 digits
 
 class SchemaConverter:
-    def __init__(self, *, prop_order, allow_fetch, dotall):
+    def __init__(self, *, prop_order, allow_fetch, dotall, raw_pattern):
         self._prop_order = prop_order
         self._allow_fetch = allow_fetch
         self._dotall = dotall
+        self._raw_pattern = raw_pattern
         self._rules = {'space': SPACE_RULE}
         self._refs = {}
         self._refs_being_resolved = set()
@@ -152,6 +153,10 @@ def _visit_pattern(self, pattern, name):
         i = 0
         length = len(pattern)
 
+        def to_rule(s: Tuple[str, bool]) -> str:
+            (txt, is_literal) = s
+            return "\"" + txt + "\"" if is_literal else txt
+        
         def transform() -> Tuple[str, bool]:
             '''
                 Parse a unit at index i (advancing it), and return its string representation + whether it's a literal.
@@ -180,13 +185,12 @@ def join_seq():
                 ret = []
                 for is_literal, g in itertools.groupby(seq, lambda x: x[1]):
                     if is_literal:
-                        lit = ''.join(x[0][1:-1] for x in g)
-                        ret.append((f'"{lit}"', True))
+                        ret.append((''.join(x[0] for x in g), True))
                     else:
                         ret.extend(g)
                 if len(ret) == 1:
                     return ret[0]
-                return (' '.join(x[0] for x in seq), False)
+                return (' '.join(to_rule(x) for x in seq), False)
 
             while i < length:
                 c = pattern[i]
@@ -197,7 +201,7 @@ def join_seq():
                     i += 1
                     if i < length:
                         assert pattern[i] != '?', f'Unsupported pattern syntax "{pattern[i]}" at index {i} of /{pattern}/'
-                    seq.append((f'({transform()[0]})', False))
+                    seq.append((f'({to_rule(transform())})', False))
                 elif c == ')':
                     i += 1
                     assert start > 0 and pattern[start-1] == '(', f'Unbalanced parentheses; start = {start}, i = {i}, pattern = {pattern}'
@@ -220,7 +224,7 @@ def join_seq():
                     seq.append(('|', False))
                     i += 1
                 elif c in ('*', '+', '?'):
-                    seq[-1] = (f'{seq[-1][0]}{c}', False)
+                    seq[-1] = (to_rule(seq[-1]) + c, False)
                     i += 1
                 elif c == '{':
                     curly_brackets = c
@@ -232,13 +236,18 @@ def join_seq():
                     curly_brackets += '}'
                     i += 1
                     nums = [s.strip() for s in curly_brackets[1:-1].split(',')]
-                    if len(nums) == 1:
-                        min_times = int(nums[0])
-                        max_times = min_times
-                    else:
-                        assert len(nums) == 2
-                        min_times = int(nums[0]) if nums[0] else 0
-                        max_times = int(nums[1]) if nums[1] else None
+                    min_times = 0
+                    max_times = None
+                    try:
+                        if len(nums) == 1:
+                            min_times = int(nums[0])
+                            max_times = min_times
+                        else:
+                            assert len(nums) == 2
+                            min_times = int(nums[0]) if nums[0] else 0
+                            max_times = int(nums[1]) if nums[1] else None
+                    except ValueError:
+                        raise ValueError(f'Invalid quantifier {curly_brackets} in /{pattern}/')
 
                     (sub, sub_is_literal) = seq[-1]
 
@@ -263,32 +272,35 @@ def join_seq():
                             False
                         )
                 else:
-                    lit = ''
-                    while i < length and pattern[i] not in NON_LITERAL_SET \
-                            and not (i < length - 1 and pattern[i+1] in ESCAPED_IN_REGEXPS_BUT_NOT_IN_LITERALS):
+                    literal = ''
+                    while i < length:
                         if pattern[i] == '\\' and i < length - 1:
-                            i += 1
-                            if pattern[i] in NON_LITERAL_SET:
-                                # Escapes in regular expressions that aren't escaped in GBNF literals
-                                lit += pattern[i]
+                            next = pattern[i + 1]
+                            if next in ESCAPED_IN_REGEXPS_BUT_NOT_IN_LITERALS:
+                                i += 1
+                                literal += pattern[i]
+                                i += 1
                             else:
-                                lit += f'\\{pattern[i]}'
+                                literal += pattern[i:i+2]
+                                i += 2
+                        elif pattern[i] == '"' and not self._raw_pattern:
+                            literal += '\\"'
                             i += 1
-                        else:
-                            if pattern[i] == '"':
-                                lit += '\\'
-                            lit += pattern[i]
+                        elif pattern[i] not in NON_LITERAL_SET and \
+                                (i == length - 1 or literal == '' or pattern[i+1] == '.' or pattern[i+1] not in NON_LITERAL_SET):
+                            literal += pattern[i]
                             i += 1
-                    if lit:
-                        seq.append((f'"{lit}"', True))
-
-                    if i < length and pattern[i] not in ('.', '(', ')', '|', '[', '{', '*', '+', '?'):
-                        seq.append((f'"{pattern[i]}"', True))
-                        i += 1
+                        else:
+                            break
+                    if literal:
+                        seq.append((literal, True))
 
             return join_seq()
 
-        return self._add_rule(name, transform()[0])
+        return self._add_rule(
+            name,
+            to_rule(transform()) if self._raw_pattern \
+                else "\"\\\"\" " + to_rule(transform()) + " \"\\\"\" space")
 
 
     def _resolve_ref(self, ref):
@@ -510,6 +522,11 @@ def main(args_in = None):
         action='store_true',
         default=False,
         help='Whether to treat dot (".") as matching all chars including line breaks in regular expression patterns')
+    parser.add_argument(
+        '--raw-pattern',
+        action='store_true',
+        default=False,
+        help='Treats string patterns as raw patterns w/o quotes (or quote escapes)')
 
     parser.add_argument('schema', help='file containing JSON schema ("-" for stdin)')
     args = parser.parse_args(args_in)
@@ -528,7 +545,8 @@ def main(args_in = None):
     converter = SchemaConverter(
         prop_order={name: idx for idx, name in enumerate(args.prop_order)},
         allow_fetch=args.allow_fetch,
-        dotall=args.dotall)
+        dotall=args.dotall,
+        raw_pattern=args.raw_pattern)
     schema = converter.resolve_refs(schema, url)
     converter.visit(schema, '')
     print(converter.format_grammar())
diff --git a/examples/regex-to-grammar.py b/examples/regex-to-grammar.py
index da2dfd1538348..7fe8566518e83 100644
--- a/examples/regex-to-grammar.py
+++ b/examples/regex-to-grammar.py
@@ -11,6 +11,7 @@
       "json-schema-to-grammar.py"),
     *rest,
     "-",
+    "--raw-pattern",
   ],
   text=True,
   input=json.dumps({
diff --git a/examples/server/json-schema-to-grammar.cpp b/examples/server/json-schema-to-grammar.cpp
index 4d7322c37c04d..410b236f6bf3d 100644
--- a/examples/server/json-schema-to-grammar.cpp
+++ b/examples/server/json-schema-to-grammar.cpp
@@ -62,7 +62,7 @@ unordered_map<char, string> GRAMMAR_LITERAL_ESCAPES = {
 };
 
 unordered_set<char> NON_LITERAL_SET = {'|', '.', '(', ')', '[', ']', '{', '}', '*', '+', '?'};
-unordered_set<char> ESCAPED_IN_REGEXPS_BUT_NOT_IN_LITERALS = {'{', '*', '+', '?'};
+unordered_set<char> ESCAPED_IN_REGEXPS_BUT_NOT_IN_LITERALS = {'[', ']', '(', ')', '|', '{', '}', '*', '+', '?'};
 
 template <typename Iterator>
 string join(Iterator begin, Iterator end, const string& separator) {
@@ -186,9 +186,15 @@ class SchemaConverter {
         size_t i = 0;
         size_t length = sub_pattern.length();
 
-        std::function<pair<string, bool>()> transform = [&]() -> pair<string, bool> {
+        using literal_or_rule = pair<string, bool>;
+        auto to_rule = [&](const literal_or_rule& ls) {
+            auto is_literal = ls.second;
+            auto s = ls.first;
+            return is_literal ? "\"" + s + "\"" : s;
+        };
+        std::function<literal_or_rule()> transform = [&]() -> literal_or_rule {
             size_t start = i;
-            vector<pair<string, bool>> seq;
+            vector<literal_or_rule> seq;
 
             auto get_dot = [&]() {
                 string rule;
@@ -202,28 +208,32 @@ class SchemaConverter {
 
             // Joins the sequence, merging consecutive literals together.
             auto join_seq = [&]() {
-                vector<string> results;
+                vector<literal_or_rule> ret;
 
                 string literal;
                 auto flush_literal = [&]() {
                   if (literal.empty()) {
                     return false;
                   }
-                  results.push_back("\"" + literal + "\"");
+                  ret.push_back(make_pair(literal, true));
                   literal.clear();
                   return true;
                 };
 
                 for (const auto& item : seq) {
-                    if (item.second) {
-                      literal += item.first.substr(1, item.first.length() - 2);
+                    auto is_literal = item.second;
+                    if (is_literal) {
+                      literal += item.first;
                     } else {
                       flush_literal();
-                      results.push_back(item.first);
+                      ret.push_back(item);
                     }
                 }
-                if (flush_literal() && results.size() == 1) {
-                    return make_pair(results[0], true);
+                flush_literal();
+
+                vector<string> results;
+                for (const auto& item : ret) {
+                    results.push_back(to_rule(item));
                 }
                 return make_pair(join(results.begin(), results.end(), " "), false);
             };
@@ -240,8 +250,7 @@ class SchemaConverter {
                             _warnings.push_back("Unsupported pattern syntax");
                         }
                     }
-                    auto sub_result = transform();
-                    seq.push_back(make_pair("(" + sub_result.first + ")", false));
+                    seq.push_back(make_pair("(" + to_rule(transform()) + ")", false));
                 } else if (c == ')') {
                     i++;
                     if (start > 0 && sub_pattern[start - 1] != '(') {
@@ -270,7 +279,7 @@ class SchemaConverter {
                     seq.push_back(make_pair("|", false));
                     i++;
                 } else if (c == '*' || c == '+' || c == '?') {
-                    seq.back().first += c;
+                    seq.back() = make_pair(to_rule(seq.back()) + c, false);
                     i++;
                 } else if (c == '{') {
                     string curly_brackets = string(1, c);
@@ -287,17 +296,22 @@ class SchemaConverter {
                     auto nums = split(curly_brackets.substr(1, curly_brackets.length() - 2), ",");
                     int min_times = 0;
                     int max_times = numeric_limits<int>::max();
-                    if (nums.size() == 1) {
-                        min_times = max_times = stoi(nums[0]);
-                    } else if (nums.size() != 2) {
-                        _errors.push_back("Wrong number of values in curly brackets");
-                    } else {
-                        if (!nums[0].empty()) {
-                            min_times = stoi(nums[0]);
-                        }
-                        if (!nums[1].empty()) {
-                            max_times = stoi(nums[1]);
+                    try {
+                        if (nums.size() == 1) {
+                            min_times = max_times = std::stoi(nums[0]);
+                        } else if (nums.size() != 2) {
+                            _errors.push_back("Wrong number of values in curly brackets");
+                        } else {
+                            if (!nums[0].empty()) {
+                                min_times = std::stoi(nums[0]);
+                            }
+                            if (!nums[1].empty()) {
+                                max_times = std::stoi(nums[1]);
+                            }
                         }
+                    } catch (const std::invalid_argument& e) {
+                        _errors.push_back("Invalid number in curly brackets");
+                        return make_pair("", false);
                     }
                     auto &last = seq.back();
                     auto &sub = last.first;
@@ -346,36 +360,39 @@ class SchemaConverter {
                     }
                 } else {
                     string literal;
-                    while (i < length && NON_LITERAL_SET.find(sub_pattern[i]) == NON_LITERAL_SET.end() &&
-                          (i == length - 1 || ESCAPED_IN_REGEXPS_BUT_NOT_IN_LITERALS.find(sub_pattern[i + 1]) == ESCAPED_IN_REGEXPS_BUT_NOT_IN_LITERALS.end())) {
+                    auto is_non_literal = [&](char c) {
+                        return NON_LITERAL_SET.find(c) != NON_LITERAL_SET.end();
+                    };
+                    while (i < length) {
                         if (sub_pattern[i] == '\\' && i < length - 1) {
-                            i++;
-                            if (NON_LITERAL_SET.find(sub_pattern[i]) != NON_LITERAL_SET.end()) {
+                            char next = sub_pattern[i + 1];
+                            if (ESCAPED_IN_REGEXPS_BUT_NOT_IN_LITERALS.find(next) != ESCAPED_IN_REGEXPS_BUT_NOT_IN_LITERALS.end()) {
+                                i++;
                                 literal += sub_pattern[i];
+                                i++;
                             } else {
-                                literal += "\\" + string(1, sub_pattern[i]);
+                                literal += sub_pattern.substr(i, 2);
+                                i += 2;
                             }
+                        } else if (sub_pattern[i] == '"') {
+                            literal += "\\\"";
                             i++;
-                        } else {
-                            if (sub_pattern[i] == '"') {
-                                literal += "\\";
-                            }
+                        } else if (!is_non_literal(sub_pattern[i]) &&
+                                (i == length - 1 || literal.empty() || sub_pattern[i + 1] == '.' || !is_non_literal(sub_pattern[i + 1]))) {
                             literal += sub_pattern[i];
                             i++;
+                        } else {
+                            break;
                         }
                     }
                     if (!literal.empty()) {
-                        seq.push_back(make_pair("\"" + literal + "\"", true));
-                    }
-                    if (i < length && NON_LITERAL_SET.find(sub_pattern[i]) == NON_LITERAL_SET.end()) {
-                        seq.push_back(make_pair("\"" + string(1, sub_pattern[i]) + "\"", true));
-                        i++;
+                        seq.push_back(make_pair(literal, true));
                     }
                 }
             }
             return join_seq();
         };
-        return _add_rule(name, transform().first);
+        return _add_rule(name, "\"\\\"\" " + to_rule(transform()) + " \"\\\"\" space");
     }
 
     string _resolve_ref(const string& ref) {
diff --git a/examples/server/json-schema-to-grammar.mjs.hpp b/examples/server/json-schema-to-grammar.mjs.hpp
index 3390e409cc20a..0dd6733393d20 100644
--- a/examples/server/json-schema-to-grammar.mjs.hpp
+++ b/examples/server/json-schema-to-grammar.mjs.hpp
@@ -157,386 +157,389 @@ unsigned char json_schema_to_grammar_mjs[] = {
   0x5f, 0x49, 0x4e, 0x5f, 0x52, 0x45, 0x47, 0x45, 0x58, 0x50, 0x53, 0x5f,
   0x42, 0x55, 0x54, 0x5f, 0x4e, 0x4f, 0x54, 0x5f, 0x49, 0x4e, 0x5f, 0x4c,
   0x49, 0x54, 0x45, 0x52, 0x41, 0x4c, 0x53, 0x20, 0x3d, 0x20, 0x6e, 0x65,
-  0x77, 0x20, 0x53, 0x65, 0x74, 0x28, 0x27, 0x7b, 0x2a, 0x2b, 0x3f, 0x27,
-  0x29, 0x3b, 0x0a, 0x0a, 0x65, 0x78, 0x70, 0x6f, 0x72, 0x74, 0x20, 0x63,
-  0x6c, 0x61, 0x73, 0x73, 0x20, 0x53, 0x63, 0x68, 0x65, 0x6d, 0x61, 0x43,
-  0x6f, 0x6e, 0x76, 0x65, 0x72, 0x74, 0x65, 0x72, 0x20, 0x7b, 0x0a, 0x20,
-  0x20, 0x63, 0x6f, 0x6e, 0x73, 0x74, 0x72, 0x75, 0x63, 0x74, 0x6f, 0x72,
-  0x28, 0x6f, 0x70, 0x74, 0x69, 0x6f, 0x6e, 0x73, 0x29, 0x20, 0x7b, 0x0a,
-  0x20, 0x20, 0x20, 0x20, 0x74, 0x68, 0x69, 0x73, 0x2e, 0x5f, 0x70, 0x72,
-  0x6f, 0x70, 0x4f, 0x72, 0x64, 0x65, 0x72, 0x20, 0x3d, 0x20, 0x6f, 0x70,
-  0x74, 0x69, 0x6f, 0x6e, 0x73, 0x2e, 0x70, 0x72, 0x6f, 0x70, 0x5f, 0x6f,
-  0x72, 0x64, 0x65, 0x72, 0x20, 0x7c, 0x7c, 0x20, 0x7b, 0x7d, 0x3b, 0x0a,
-  0x20, 0x20, 0x20, 0x20, 0x74, 0x68, 0x69, 0x73, 0x2e, 0x5f, 0x61, 0x6c,
-  0x6c, 0x6f, 0x77, 0x46, 0x65, 0x74, 0x63, 0x68, 0x20, 0x3d, 0x20, 0x6f,
-  0x70, 0x74, 0x69, 0x6f, 0x6e, 0x73, 0x2e, 0x61, 0x6c, 0x6c, 0x6f, 0x77,
-  0x5f, 0x66, 0x65, 0x74, 0x63, 0x68, 0x20, 0x7c, 0x7c, 0x20, 0x66, 0x61,
-  0x6c, 0x73, 0x65, 0x3b, 0x0a, 0x20, 0x20, 0x20, 0x20, 0x74, 0x68, 0x69,
-  0x73, 0x2e, 0x5f, 0x64, 0x6f, 0x74, 0x61, 0x6c, 0x6c, 0x20, 0x3d, 0x20,
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 };
-unsigned int json_schema_to_grammar_mjs_len = 19910;
+unsigned int json_schema_to_grammar_mjs_len = 19950;
diff --git a/examples/server/public/index.js b/examples/server/public/index.js
index e69de29bb2d1d..aa3ffb5e06be5 100644
--- a/examples/server/public/index.js
+++ b/examples/server/public/index.js
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n,e,_=1,i="",o="",r=[0],u=function(t){1===_&&(t||(i=i.replace(/^\s*\n\s*|\s*\n\s*$/g,"")))?r.push(0,t,i):3===_&&(t||i)?(r.push(3,t,i),_=2):2===_&&"..."===i&&t?r.push(4,t,0):2===_&&i&&!t?r.push(5,0,!0,i):_>=5&&((i||!t&&5===_)&&(r.push(_,0,i,e),_=6),t&&(r.push(_,t,0,e),_=6)),i=""},f=0;f<t.length;f++){f&&(1===_&&u(),u(f));for(var l=0;l<t[f].length;l++)n=t[f][l],1===_?"<"===n?(u(),r=[r],_=3):i+=n:4===_?"--"===i&&">"===n?(_=1,i=""):i=n+i[0]:o?n===o?o="":i+=n:'"'===n||"'"===n?o=n:">"===n?(u(),_=1):_&&("="===n?(_=5,e=i,i=""):"/"===n&&(_<5||">"===t[f][l+1])?(u(),3===_&&(r=r[0]),_=r,(r=r[0]).push(2,0,_),_=0):" "===n||"\t"===n||"\n"===n||"\r"===n?(u(),_=2):i+=n),3===_&&"!--"===i&&(_=4,r=r[0])}return u(),r}(t)),n),arguments,[])).length>1?n:n[0]}var un=rn.bind(L);export{I as Component,j as Fragment,h as Signal,_ as batch,ht as cloneElement,m as computed,at as createContext,L as createElement,R as createRef,w as effect,L as h,un as html,ct as hydrate,U as isValidElement,C as options,st as render,a as signal,Y as toChildArray,u as untracked,Ft as useCallback,nn as useComputed,Mt as useContext,Wt as useDebugValue,$t as useEffect,Lt as useErrorBoundary,Ot as useId,Vt as useImperativeHandle,Dt as useLayoutEffect,At as useMemo,Nt as useReducer,Tt as useRef,tn as useSignal,en as useSignalEffect,Pt as useState};
diff --git a/examples/server/public/json-schema-to-grammar.mjs b/examples/server/public/json-schema-to-grammar.mjs
index 86572106fa544..5237d574599a7 100644
--- a/examples/server/public/json-schema-to-grammar.mjs
+++ b/examples/server/public/json-schema-to-grammar.mjs
@@ -35,7 +35,7 @@ const GRAMMAR_RANGE_LITERAL_ESCAPE_RE = /[\n\r"\]\-\\]/g;
 const GRAMMAR_LITERAL_ESCAPES = { '\r': '\\r', '\n': '\\n', '"': '\\"', '-': '\\-', ']': '\\]' };
 
 const NON_LITERAL_SET = new Set('|.()[]{}*+?');
-const ESCAPED_IN_REGEXPS_BUT_NOT_IN_LITERALS = new Set('{*+?');
+const ESCAPED_IN_REGEXPS_BUT_NOT_IN_LITERALS = new Set('[]()|{}*+?');
 
 export class SchemaConverter {
   constructor(options) {
@@ -163,6 +163,9 @@ export class SchemaConverter {
       return this._addRule('dot', rule);
     };
 
+
+    const toRule = ([s, isLiteral]) => isLiteral ? "\"" + s + "\"" : s;
+
     const transform = () => {
       const start = i;
       // For each component of this sequence, store its string representation and whether it's a literal.
@@ -175,8 +178,7 @@ export class SchemaConverter {
         const ret = [];
         for (const [isLiteral, g] of groupBy(seq, x => x[1])) {
           if (isLiteral) {
-            const lit = [...g].map(x => x[0].slice(1, -1)).join('');
-            ret.push([`"${lit}"`, true]);
+            ret.push([[...g].map(x => x[0]).join(''), true]);
           } else {
             ret.push(...g);
           }
@@ -184,7 +186,7 @@ export class SchemaConverter {
         if (ret.length === 1) {
           return ret[0];
         }
-        return [ret.map(x => x[0]).join(' '), false];
+        return [ret.map(x => toRule(x)).join(' '), false];
       };
 
       while (i < length) {
@@ -199,7 +201,7 @@ export class SchemaConverter {
               throw new Error(`Unsupported pattern syntax "${pattern[i]}" at index ${i} of /${pattern}/`);
             }
           }
-          seq.push([`(${transform()[0]})`, false]);
+          seq.push([`(${toRule(transform())})`, false]);
         } else if (c === ')') {
           i += 1;
           if (start <= 0 || pattern[start - 1] !== '(') {
@@ -228,7 +230,7 @@ export class SchemaConverter {
           seq.push(['|', false]);
           i += 1;
         } else if (c === '*' || c === '+' || c === '?') {
-          seq[seq.length - 1] = [`${seq[seq.length - 1][0]}${c}`, false];
+          seq[seq.length - 1] = [toRule(seq[seq.length - 1]) + c, false];
           i += 1;
         } else if (c === '{') {
           let curlyBrackets = c;
@@ -278,33 +280,31 @@ export class SchemaConverter {
             seq[seq.length - 1] = [repeatedSub.concat(optionalSub).join(' '), false];
           }
         } else {
-          let lit = '';
-          while (i < length && !NON_LITERAL_SET.has(pattern[i]) &&
-                 !(i < length - 1 && ESCAPED_IN_REGEXPS_BUT_NOT_IN_LITERALS.has(pattern[i + 1]))) {
+          let literal = '';
+          while (i < length) {
             if (pattern[i] === '\\' && i < length - 1) {
-              i += 1;
-              if (NON_LITERAL_SET.has(pattern[i])) {
-                // Escapes in regular expressions that aren't escaped in GBNF literals
-                lit += pattern[i];
+              const next = pattern[i + 1];
+              if (ESCAPED_IN_REGEXPS_BUT_NOT_IN_LITERALS.has(next)) {
+                i += 1;
+                literal += pattern[i];
+                i += 1;
               } else {
-                lit += `\\${pattern[i]}`;
+                literal += pattern.slice(i, i + 2);
+                i += 2;
               }
+            } else if (pattern[i] === '"') {
+              literal += '\\"';
               i += 1;
-            } else {
-              if (pattern[i] === '"') {
-                  lit += '\\';
-              }
-              lit += pattern[i];
+            } else if (!NON_LITERAL_SET.has(pattern[i]) &&
+                (i === length - 1 || literal === '' || pattern[i + 1] === '.' || !NON_LITERAL_SET.has(pattern[i+1]))) {
+              literal += pattern[i];
               i += 1;
+            } else {
+              break;
             }
           }
-          if (lit) {
-            seq.push([`"${lit}"`, true]);
-          }
-
-          if (i < length && !NON_LITERAL_SET.has(pattern[i])) {
-            seq.push([`"${pattern[i]}"`, true]);
-            i += 1;
+          if (literal !== '') {
+            seq.push([literal, true]);
           }
         }
       }
@@ -312,7 +312,7 @@ export class SchemaConverter {
       return joinSeq();
     };
 
-    return this._addRule(name, transform()[0]);
+    return this._addRule(name, "\"\\\"\" " + toRule(transform()) + " \"\\\"\" space")
   }
 
   _resolveRef(ref) {
diff --git a/tests/test-json-schema-to-grammar.cpp b/tests/test-json-schema-to-grammar.cpp
index 34648cb28cb36..21ca5dcf79f01 100755
--- a/tests/test-json-schema-to-grammar.cpp
+++ b/tests/test-json-schema-to-grammar.cpp
@@ -331,6 +331,45 @@ static void test_all(const string& lang, std::function<void(const TestCase&)> ru
     )"""
   });
 
+  test({
+    SUCCESS,
+    "simple regexp",
+    R"""({
+      "type": "string",
+      "pattern": "^abc?d*efg+(hij)?kl$"
+    })""",
+    R"""(
+      root ::= "\"" "ab" "c"? "d"* "ef" "g"+ ("hij")? "kl" "\"" space
+      space ::= " "?
+    )"""
+  });
+
+  test({
+    SUCCESS,
+    "regexp escapes",
+    R"""({
+      "type": "string",
+      "pattern": "^\\[\\]\\{\\}\\(\\)\\|\\+\\*\\?$"
+    })""",
+    R"""(
+      root ::= "\"" "[]{}()|+*?" "\"" space
+      space ::= " "?
+    )"""
+  });
+
+  test({
+    SUCCESS,
+    "regexp quote",
+    R"""({
+      "type": "string",
+      "pattern": "^\"$"
+    })""",
+    R"""(
+      root ::= "\"" "\"" "\"" space
+      space ::= " "?
+    )"""
+  });
+
   test({
     SUCCESS,
     "regexp",
@@ -340,7 +379,7 @@ static void test_all(const string& lang, std::function<void(const TestCase&)> ru
     })""",
     R"""(
       dot ::= [\U00000000-\x09\x0B\x0C\x0E-\U0010FFFF]
-      root ::= ("(" root-1 root-1? root-1? ")")? root-1 root-1 root-1 "-" root-1 root-1 root-1 root-1 " and" dot dot dot
+      root ::= "\"" ("(" root-1 root-1? root-1? ")")? root-1 root-1 root-1 "-" root-1 root-1 root-1 root-1 " and" dot dot dot "\"" space
       root-1 ::= [0-9]
       space ::= " "?
     )"""

From bd96df4e85566ab269a79055472f0942ffd20cc6 Mon Sep 17 00:00:00 2001
From: ochafik <ochafik@google.com>
Date: Mon, 18 Mar 2024 04:42:25 +0000
Subject: [PATCH 83/98] json: ws nit

---
 examples/json-schema-to-grammar.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/examples/json-schema-to-grammar.py b/examples/json-schema-to-grammar.py
index 0311fe7152ff2..559545a8308ab 100755
--- a/examples/json-schema-to-grammar.py
+++ b/examples/json-schema-to-grammar.py
@@ -156,7 +156,7 @@ def _visit_pattern(self, pattern, name):
         def to_rule(s: Tuple[str, bool]) -> str:
             (txt, is_literal) = s
             return "\"" + txt + "\"" if is_literal else txt
-        
+
         def transform() -> Tuple[str, bool]:
             '''
                 Parse a unit at index i (advancing it), and return its string representation + whether it's a literal.

From 05fd7e3020891eae6c7577de1542746cf3b0f63e Mon Sep 17 00:00:00 2001
From: ochafik <ochafik@google.com>
Date: Mon, 18 Mar 2024 20:46:57 +0000
Subject: [PATCH 84/98] json: fix json handling in server when there's no
 response_format

---
 examples/server/utils.hpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/examples/server/utils.hpp b/examples/server/utils.hpp
index e976ebda69c3c..c783233e8f1b0 100644
--- a/examples/server/utils.hpp
+++ b/examples/server/utils.hpp
@@ -376,9 +376,9 @@ static json oaicompat_completion_params_parse(
         llama_params["grammar"] = json_value(body, "grammar", json::object());
     }
 
-    if (!body["response_format"].is_null()) {
+    if (body.contains("response_format")) {
       auto response_format = json_value(body, "response_format", json::object());
-      if (response_format["type"] == "json_object") {
+      if (response_format.contains("type") && response_format["type"] == "json_object") {
         llama_params["json_schema"] = json_value(response_format, "schema", json::object());
       } else {
         throw std::runtime_error("response_format type not supported: " + response_format["type"].dump());

From e7de6433cbcb83dfad693ee6db3bc4087bf474ba Mon Sep 17 00:00:00 2001
From: ochafik <ochafik@google.com>
Date: Tue, 19 Mar 2024 01:21:49 +0000
Subject: [PATCH 85/98] json: catch schema conversion errors in server

---
 examples/server/server.cpp | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/examples/server/server.cpp b/examples/server/server.cpp
index 36b6a8cf4203d..cf075d6c41aa4 100644
--- a/examples/server/server.cpp
+++ b/examples/server/server.cpp
@@ -848,8 +848,13 @@ struct server_context {
         slot.params.n_keep             = json_value(data, "n_keep",            slot.params.n_keep);
         slot.params.seed               = json_value(data, "seed",              default_params.seed);
         if (data.contains("json_schema") && !data.contains("grammar")) {
-            auto schema                = json_value(data, "json_schema",       json::object());
-            slot.sparams.grammar       = json_schema_to_grammar(schema);
+            try {
+                auto schema                = json_value(data, "json_schema",       json::object());
+                slot.sparams.grammar       = json_schema_to_grammar(schema);
+            } catch (const std::exception & e) {
+                send_error(task, std::string("\"json_schema\": ") + e.what(), ERROR_TYPE_INVALID_REQUEST);
+                return false;
+            }
         } else {
             slot.sparams.grammar       = json_value(data, "grammar",           default_sparams.grammar);
         }

From 02e3bde6b47b947e2613d2447fcebe0f07ad7011 Mon Sep 17 00:00:00 2001
From: ochafik <ochafik@google.com>
Date: Tue, 19 Mar 2024 01:45:23 +0000
Subject: [PATCH 86/98] json: don't complain about unknown format type in
 server if unset

---
 examples/server/utils.hpp | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/examples/server/utils.hpp b/examples/server/utils.hpp
index c783233e8f1b0..926f1fd853e0e 100644
--- a/examples/server/utils.hpp
+++ b/examples/server/utils.hpp
@@ -378,10 +378,12 @@ static json oaicompat_completion_params_parse(
 
     if (body.contains("response_format")) {
       auto response_format = json_value(body, "response_format", json::object());
-      if (response_format.contains("type") && response_format["type"] == "json_object") {
-        llama_params["json_schema"] = json_value(response_format, "schema", json::object());
-      } else {
-        throw std::runtime_error("response_format type not supported: " + response_format["type"].dump());
+      if (response_format.contains("type")) {
+        if (response_format["type"] == "json_object") {
+            llama_params["json_schema"] = json_value(response_format, "schema", json::object());
+        } else {
+            throw std::runtime_error("response_format type not supported: " + response_format["type"].dump());
+        }
       }
     }
 

From 263a86e14888a97ceed4713379944b2c266a68fb Mon Sep 17 00:00:00 2001
From: ochafik <ochafik@google.com>
Date: Tue, 19 Mar 2024 02:12:15 +0000
Subject: [PATCH 87/98] json: cleaner build of test

---
 Makefile                              | 4 ++--
 examples/server/CMakeLists.txt        | 5 ++---
 tests/CMakeLists.txt                  | 9 +++++----
 tests/test-json-schema-to-grammar.cpp | 5 +----
 4 files changed, 10 insertions(+), 13 deletions(-)

diff --git a/Makefile b/Makefile
index d23e296836866..9478fbe91be88 100644
--- a/Makefile
+++ b/Makefile
@@ -865,8 +865,8 @@ tests/test-double-float: tests/test-double-float.cpp ggml.o $(OBJS)
 	$(CXX) $(CXXFLAGS) -c $< -o $(call GET_OBJ_FILE, $<)
 	$(CXX) $(CXXFLAGS) $(filter-out %.h $<,$^) $(call GET_OBJ_FILE, $<) -o $@ $(LDFLAGS)
 
-tests/test-json-schema-to-grammar: tests/test-json-schema-to-grammar.cpp ggml.o llama.o grammar-parser.o $(OBJS)
-	$(CXX) $(CXXFLAGS) -c $< -o $(call GET_OBJ_FILE, $<)
+tests/test-json-schema-to-grammar: tests/test-json-schema-to-grammar.cpp json-schema-to-grammar.o ggml.o llama.o grammar-parser.o $(OBJS)
+	$(CXX) $(CXXFLAGS) -Iexamples/server -c $< -o $(call GET_OBJ_FILE, $<)
 	$(CXX) $(CXXFLAGS) $(filter-out %.h $<,$^) $(call GET_OBJ_FILE, $<) -o $@ $(LDFLAGS)
 
 tests/test-grad0: tests/test-grad0.cpp ggml.o $(OBJS)
diff --git a/examples/server/CMakeLists.txt b/examples/server/CMakeLists.txt
index 12afac3a5b599..3d027fae129ec 100644
--- a/examples/server/CMakeLists.txt
+++ b/examples/server/CMakeLists.txt
@@ -2,19 +2,18 @@ set(TARGET server)
 option(LLAMA_SERVER_VERBOSE "Build verbose logging option for Server" ON)
 option(LLAMA_SERVER_SSL "Build SSL support for the server" OFF)
 include_directories(${CMAKE_CURRENT_SOURCE_DIR})
+add_library(json-schema-to-grammar OBJECT json-schema-to-grammar.cpp json-schema-to-grammar.h)
 add_executable(${TARGET}
     server.cpp
     utils.hpp
     json.hpp
     httplib.h
-    json-schema-to-grammar.cpp
-    json-schema-to-grammar.h
 )
 install(TARGETS ${TARGET} RUNTIME)
 target_compile_definitions(${TARGET} PRIVATE
     SERVER_VERBOSE=$<BOOL:${LLAMA_SERVER_VERBOSE}>
 )
-target_link_libraries(${TARGET} PRIVATE common ${CMAKE_THREAD_LIBS_INIT})
+target_link_libraries(${TARGET} PRIVATE common json-schema-to-grammar ${CMAKE_THREAD_LIBS_INIT})
 if (LLAMA_SERVER_SSL)
     find_package(OpenSSL REQUIRED)
     target_link_libraries(${TARGET} PRIVATE OpenSSL::SSL OpenSSL::Crypto)
diff --git a/tests/CMakeLists.txt b/tests/CMakeLists.txt
index 362ee32d2f5ce..a43439aed96e7 100644
--- a/tests/CMakeLists.txt
+++ b/tests/CMakeLists.txt
@@ -25,7 +25,7 @@ function(llama_test source)
 
     add_executable(${TEST_TARGET} ${source} get-model.cpp)
     install(TARGETS ${TEST_TARGET} RUNTIME)
-    target_link_libraries(${TEST_TARGET} PRIVATE common)
+    target_link_libraries(${TEST_TARGET} PRIVATE common json-schema-to-grammar)
     add_test(
         NAME ${TEST_TARGET}
         WORKING_DIRECTORY ${LLAMA_TEST_WORKING_DIRECTORY}
@@ -65,10 +65,11 @@ llama_test(test-backend-ops.cpp)
 
 llama_test(test-rope.cpp)
 
-llama_test(test-model-load-cancel.cpp      LABEL "model")
-llama_test(test-autorelease.cpp            LABEL "model")
+llama_test(test-model-load-cancel.cpp  LABEL "model")
+llama_test(test-autorelease.cpp        LABEL "model")
 
-llama_test(test-json-schema-to-grammar.cpp WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/..)
+llama_test(test-json-schema-to-grammar.cpp   WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/..)
+target_include_directories(test-json-schema-to-grammar PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/../examples/server)
 
 # dummy executable - not installed
 get_filename_component(TEST_TARGET test-c.c NAME_WE)
diff --git a/tests/test-json-schema-to-grammar.cpp b/tests/test-json-schema-to-grammar.cpp
index 21ca5dcf79f01..89fb8cc1c8192 100755
--- a/tests/test-json-schema-to-grammar.cpp
+++ b/tests/test-json-schema-to-grammar.cpp
@@ -7,10 +7,7 @@
 #include <sstream>
 #include <regex>
 
-// TODO: split this to some library? common would need json.hpp
-#include "../examples/server/json-schema-to-grammar.h"
-#include "../examples/server/json-schema-to-grammar.cpp"
-
+#include "json-schema-to-grammar.h"
 #include "grammar-parser.h"
 
 using namespace std;

From 874599e749df56ff2d841a53c85a31f196d205aa Mon Sep 17 00:00:00 2001
From: ochafik <ochafik@google.com>
Date: Tue, 19 Mar 2024 09:10:39 +0000
Subject: [PATCH 88/98] json: create examples/json-schema-pydantic-example.py

---
 examples/json-schema-pydantic-example.py | 74 ++++++++++++++++++++++++
 1 file changed, 74 insertions(+)
 create mode 100644 examples/json-schema-pydantic-example.py

diff --git a/examples/json-schema-pydantic-example.py b/examples/json-schema-pydantic-example.py
new file mode 100644
index 0000000000000..e506968d68c63
--- /dev/null
+++ b/examples/json-schema-pydantic-example.py
@@ -0,0 +1,74 @@
+# Usage:
+#! ./server -m some-model.gguf &
+#! pip install pydantic
+#! python json-schema-pydantic-example.py
+
+from pydantic import BaseModel, TypeAdapter
+from annotated_types import MaxLen, MinLen
+from typing import Annotated, Iterable, List, Optional
+import enum, json, requests
+
+if True:
+
+  def create_completion(*, response_model=None, endpoint="http://localhost:8080/v1/chat/completions", messages, **kwargs):
+    '''
+      Creates a chat completion using an OpenAI-compatible endpoint w/ JSON schema support
+      (llama.cpp server, llama-cpp-python, Anyscale / Together...)
+
+      The response_model param takes a type (+ supports Pydantic) and behaves just as w/ Instructor (see below)
+    '''
+    if response_model:
+      type_adapter = TypeAdapter(response_model)
+      schema = type_adapter.json_schema()
+      messages = [{
+        "role": "system",
+        "content": f"You respond in JSON format with the following schema: {json.dumps(schema, indent=2)}"
+      }] + messages
+      response_format={"type": "json_object", "schema": schema}
+
+    data = requests.post(endpoint, headers={"Content-Type": "application/json"},
+                        json=dict(messages=messages, response_format=response_format, **kwargs)).json()
+    if 'error' in data:
+      raise Exception(data['error']['message'])
+
+    content = data["choices"][0]["message"]["content"]
+    return type_adapter.validate_json(content) if type_adapter else content
+
+else:
+
+  # This alternative branch uses Instructor + OpenAI client lib.
+  # Instructor support streamed iterable responses, retry & more.
+  # (see https://python.useinstructor.com/)
+  #! pip install instructor openai
+  import instructor, openai
+  client = instructor.patch(
+    openai.OpenAI(api_key="123", base_url="http://localhost:8080"),
+    mode=instructor.Mode.JSON_SCHEMA)
+  create_completion = client.chat.completions.create
+
+
+if __name__ == '__main__':
+
+  class QAPair(BaseModel):
+    question: str
+    concise_answer: str
+    justification: str
+
+  class PyramidalSummary(BaseModel):
+    title: str
+    summary: str
+    question_answers: Annotated[List[QAPair], MinLen(2)]
+    sub_sections: Optional[Annotated[List['PyramidalSummary'], MinLen(2)]]
+
+  print("# Summary\n", create_completion(
+    model="...",
+    response_model=PyramidalSummary,
+    messages=[{
+      "role": "user",
+      "content": f"""
+        You are a highly efficient corporate document summarizer.
+        Create a pyramidal summary of an imaginary internal document about our company processes
+        (starting high-level, going down to each sub sections).
+        Keep questions short, and answers even shorter (trivia / quizz style).
+      """
+    }]))

From 7fc759b84f5e075281f5ebf2de56db2cdd14fa9b Mon Sep 17 00:00:00 2001
From: Olivier Chafik <ochafik@google.com>
Date: Tue, 19 Mar 2024 11:59:06 +0000
Subject: [PATCH 89/98] json: fix date pattern

---
 examples/json-schema-to-grammar.py            |    2 +-
 examples/server/completion.js.hpp             |    2 +-
 examples/server/index.html.hpp                |    2 +-
 examples/server/index.js.hpp                  |    2 +-
 examples/server/json-schema-to-grammar.cpp    |    2 +-
 .../server/json-schema-to-grammar.mjs.hpp     | 3001 +++++++++--------
 .../server/public/json-schema-to-grammar.mjs  |    2 +-
 tests/test-json-schema-to-grammar.cpp         |    2 +-
 8 files changed, 1508 insertions(+), 1507 deletions(-)

diff --git a/examples/json-schema-to-grammar.py b/examples/json-schema-to-grammar.py
index 559545a8308ab..bf4ead215b478 100755
--- a/examples/json-schema-to-grammar.py
+++ b/examples/json-schema-to-grammar.py
@@ -28,7 +28,7 @@
 
 # TODO: support "uri", "email" string formats
 DATE_RULES = {
-    'date'   : '[0-9] [0-9] [0-9] [0-9] "-" ( "0" [1-9] | "1" [0-2] ) "-" ( [0-2] [0-9] | "3" [0-1] )',
+    'date'   : '[0-9] [0-9] [0-9] [0-9] "-" ( "0" [1-9] | "1" [0-2] ) "-" ( \"0\" [1-9] | [1-2] [0-9] | "3" [0-1] )',
     'time'   : '([01] [0-9] | "2" [0-3]) ":" [0-5] [0-9] ":" [0-5] [0-9] ( "." [0-9] [0-9] [0-9] )? ( "Z" | ( "+" | "-" ) ( [01] [0-9] | "2" [0-3] ) ":" [0-5] [0-9] )',
     'date-time': 'date "T" time',
     'date-string': '"\\"" date "\\"" space',
diff --git a/examples/server/completion.js.hpp b/examples/server/completion.js.hpp
index 10734091eeaf6..f8bb4b0f2c128 100644
--- a/examples/server/completion.js.hpp
+++ b/examples/server/completion.js.hpp
@@ -483,4 +483,4 @@ unsigned char completion_js[] = {
   0x20, 0x67, 0x65, 0x6e, 0x65, 0x72, 0x61, 0x74, 0x69, 0x6f, 0x6e, 0x5f,
   0x73, 0x65, 0x74, 0x74, 0x69, 0x6e, 0x67, 0x73, 0x3b, 0x0a, 0x7d, 0x0a
 };
-unsigned int completion_js_len = 5796;
+size_t completion_js_len = 5796;
diff --git a/examples/server/index.html.hpp b/examples/server/index.html.hpp
index 1ab57f549078d..ae8c8898028f9 100644
--- a/examples/server/index.html.hpp
+++ b/examples/server/index.html.hpp
@@ -2818,4 +2818,4 @@ unsigned char index_html[] = {
   0x2f, 0x62, 0x6f, 0x64, 0x79, 0x3e, 0x0a, 0x0a, 0x3c, 0x2f, 0x68, 0x74,
   0x6d, 0x6c, 0x3e, 0x0a, 0x0a
 };
-unsigned int index_html_len = 33809;
+size_t index_html_len = 33809;
diff --git a/examples/server/index.js.hpp b/examples/server/index.js.hpp
index 256aab5e5930e..24d0b33fa6f03 100644
--- a/examples/server/index.js.hpp
+++ b/examples/server/index.js.hpp
@@ -1928,4 +1928,4 @@ unsigned char index_js[] = {
   0x45, 0x66, 0x66, 0x65, 0x63, 0x74, 0x2c, 0x50, 0x74, 0x20, 0x61, 0x73,
   0x20, 0x75, 0x73, 0x65, 0x53, 0x74, 0x61, 0x74, 0x65, 0x7d, 0x3b, 0x0a
 };
-unsigned int index_js_len = 23136;
+size_t index_js_len = 23136;
diff --git a/examples/server/json-schema-to-grammar.cpp b/examples/server/json-schema-to-grammar.cpp
index 410b236f6bf3d..389b09d45c0bb 100644
--- a/examples/server/json-schema-to-grammar.cpp
+++ b/examples/server/json-schema-to-grammar.cpp
@@ -36,7 +36,7 @@ unordered_map<string, string> PRIMITIVE_RULES = {
 vector<string> OBJECT_RULE_NAMES = {"object", "array", "string", "number", "boolean", "null", "value"};
 
 unordered_map<string, string> DATE_RULES = {
-    {"date", "[0-9] [0-9] [0-9] [0-9] \"-\" ( \"0\" [1-9] | \"1\" [0-2] ) \"-\" ( [0-2] [0-9] | \"3\" [0-1] )"},
+    {"date", "[0-9] [0-9] [0-9] [0-9] \"-\" ( \"0\" [1-9] | \"1\" [0-2] ) \"-\" ( \"0\" [1-9] | [1-2] [0-9] | \"3\" [0-1] )"},
     {"time", "([01] [0-9] | \"2\" [0-3]) \":\" [0-5] [0-9] \":\" [0-5] [0-9] ( \".\" [0-9] [0-9] [0-9] )? ( \"Z\" | ( \"+\" | \"-\" ) ( [01] [0-9] | \"2\" [0-3] ) \":\" [0-5] [0-9] )"},
     {"date-time", "date \"T\" time"},
     {"date-string", "\"\\\"\" date \"\\\"\" space"},
diff --git a/examples/server/json-schema-to-grammar.mjs.hpp b/examples/server/json-schema-to-grammar.mjs.hpp
index 0dd6733393d20..72fb6b80f43da 100644
--- a/examples/server/json-schema-to-grammar.mjs.hpp
+++ b/examples/server/json-schema-to-grammar.mjs.hpp
@@ -90,1577 +90,1578 @@ unsigned char json_schema_to_grammar_mjs[] = {
   0x20, 0x22, 0x2d, 0x22, 0x20, 0x28, 0x20, 0x22, 0x30, 0x22, 0x20, 0x5b,
   0x31, 0x2d, 0x39, 0x5d, 0x20, 0x7c, 0x20, 0x22, 0x31, 0x22, 0x20, 0x5b,
   0x30, 0x2d, 0x32, 0x5d, 0x20, 0x29, 0x20, 0x22, 0x2d, 0x22, 0x20, 0x28,
-  0x20, 0x5b, 0x30, 0x2d, 0x32, 0x5d, 0x20, 0x5b, 0x30, 0x2d, 0x39, 0x5d,
-  0x20, 0x7c, 0x20, 0x22, 0x33, 0x22, 0x20, 0x5b, 0x30, 0x2d, 0x31, 0x5d,
-  0x20, 0x29, 0x27, 0x2c, 0x0a, 0x20, 0x20, 0x20, 0x20, 0x27, 0x74, 0x69,
-  0x6d, 0x65, 0x27, 0x20, 0x20, 0x20, 0x3a, 0x20, 0x27, 0x28, 0x5b, 0x30,
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-  0x32, 0x22, 0x20, 0x5b, 0x30, 0x2d, 0x33, 0x5d, 0x29, 0x20, 0x22, 0x3a,
-  0x22, 0x20, 0x5b, 0x30, 0x2d, 0x35, 0x5d, 0x20, 0x5b, 0x30, 0x2d, 0x39,
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+  0x65, 0x43, 0x6f, 0x6d, 0x70, 0x61, 0x72, 0x65, 0x28, 0x62, 0x29, 0x29,
+  0x29, 0x20, 0x7b, 0x0a, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x67, 0x72,
+  0x61, 0x6d, 0x6d, 0x61, 0x72, 0x20, 0x2b, 0x3d, 0x20, 0x60, 0x24, 0x7b,
+  0x6e, 0x61, 0x6d, 0x65, 0x7d, 0x20, 0x3a, 0x3a, 0x3d, 0x20, 0x24, 0x7b,
+  0x72, 0x75, 0x6c, 0x65, 0x7d, 0x5c, 0x6e, 0x60, 0x3b, 0x0a, 0x20, 0x20,
+  0x20, 0x20, 0x7d, 0x0a, 0x20, 0x20, 0x20, 0x20, 0x72, 0x65, 0x74, 0x75,
+  0x72, 0x6e, 0x20, 0x67, 0x72, 0x61, 0x6d, 0x6d, 0x61, 0x72, 0x3b, 0x0a,
+  0x20, 0x20, 0x7d, 0x0a, 0x7d, 0x0a, 0x0a, 0x2f, 0x2f, 0x20, 0x48, 0x65,
+  0x6c, 0x70, 0x65, 0x72, 0x20, 0x66, 0x75, 0x6e, 0x63, 0x74, 0x69, 0x6f,
+  0x6e, 0x20, 0x74, 0x6f, 0x20, 0x67, 0x72, 0x6f, 0x75, 0x70, 0x20, 0x65,
+  0x6c, 0x65, 0x6d, 0x65, 0x6e, 0x74, 0x73, 0x20, 0x62, 0x79, 0x20, 0x61,
+  0x20, 0x6b, 0x65, 0x79, 0x20, 0x66, 0x75, 0x6e, 0x63, 0x74, 0x69, 0x6f,
+  0x6e, 0x0a, 0x66, 0x75, 0x6e, 0x63, 0x74, 0x69, 0x6f, 0x6e, 0x2a, 0x20,
+  0x67, 0x72, 0x6f, 0x75, 0x70, 0x42, 0x79, 0x28, 0x69, 0x74, 0x65, 0x72,
+  0x61, 0x62, 0x6c, 0x65, 0x2c, 0x20, 0x6b, 0x65, 0x79, 0x46, 0x6e, 0x29,
+  0x20, 0x7b, 0x0a, 0x20, 0x20, 0x6c, 0x65, 0x74, 0x20, 0x6c, 0x61, 0x73,
+  0x74, 0x4b, 0x65, 0x79, 0x20, 0x3d, 0x20, 0x6e, 0x75, 0x6c, 0x6c, 0x3b,
+  0x0a, 0x20, 0x20, 0x6c, 0x65, 0x74, 0x20, 0x67, 0x72, 0x6f, 0x75, 0x70,
+  0x20, 0x3d, 0x20, 0x5b, 0x5d, 0x3b, 0x0a, 0x20, 0x20, 0x66, 0x6f, 0x72,
+  0x20, 0x28, 0x63, 0x6f, 0x6e, 0x73, 0x74, 0x20, 0x65, 0x6c, 0x65, 0x6d,
+  0x65, 0x6e, 0x74, 0x20, 0x6f, 0x66, 0x20, 0x69, 0x74, 0x65, 0x72, 0x61,
+  0x62, 0x6c, 0x65, 0x29, 0x20, 0x7b, 0x0a, 0x20, 0x20, 0x20, 0x20, 0x63,
+  0x6f, 0x6e, 0x73, 0x74, 0x20, 0x6b, 0x65, 0x79, 0x20, 0x3d, 0x20, 0x6b,
+  0x65, 0x79, 0x46, 0x6e, 0x28, 0x65, 0x6c, 0x65, 0x6d, 0x65, 0x6e, 0x74,
+  0x29, 0x3b, 0x0a, 0x20, 0x20, 0x20, 0x20, 0x69, 0x66, 0x20, 0x28, 0x6c,
+  0x61, 0x73, 0x74, 0x4b, 0x65, 0x79, 0x20, 0x21, 0x3d, 0x3d, 0x20, 0x6e,
+  0x75, 0x6c, 0x6c, 0x20, 0x26, 0x26, 0x20, 0x6b, 0x65, 0x79, 0x20, 0x21,
+  0x3d, 0x3d, 0x20, 0x6c, 0x61, 0x73, 0x74, 0x4b, 0x65, 0x79, 0x29, 0x20,
+  0x7b, 0x0a, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x79, 0x69, 0x65, 0x6c,
+  0x64, 0x20, 0x5b, 0x6c, 0x61, 0x73, 0x74, 0x4b, 0x65, 0x79, 0x2c, 0x20,
+  0x67, 0x72, 0x6f, 0x75, 0x70, 0x5d, 0x3b, 0x0a, 0x20, 0x20, 0x20, 0x20,
+  0x20, 0x20, 0x67, 0x72, 0x6f, 0x75, 0x70, 0x20, 0x3d, 0x20, 0x5b, 0x5d,
+  0x3b, 0x0a, 0x20, 0x20, 0x20, 0x20, 0x7d, 0x0a, 0x20, 0x20, 0x20, 0x20,
+  0x67, 0x72, 0x6f, 0x75, 0x70, 0x2e, 0x70, 0x75, 0x73, 0x68, 0x28, 0x65,
+  0x6c, 0x65, 0x6d, 0x65, 0x6e, 0x74, 0x29, 0x3b, 0x0a, 0x20, 0x20, 0x20,
+  0x20, 0x6c, 0x61, 0x73, 0x74, 0x4b, 0x65, 0x79, 0x20, 0x3d, 0x20, 0x6b,
+  0x65, 0x79, 0x3b, 0x0a, 0x20, 0x20, 0x7d, 0x0a, 0x20, 0x20, 0x69, 0x66,
+  0x20, 0x28, 0x67, 0x72, 0x6f, 0x75, 0x70, 0x2e, 0x6c, 0x65, 0x6e, 0x67,
+  0x74, 0x68, 0x20, 0x3e, 0x20, 0x30, 0x29, 0x20, 0x7b, 0x0a, 0x20, 0x20,
+  0x20, 0x20, 0x79, 0x69, 0x65, 0x6c, 0x64, 0x20, 0x5b, 0x6c, 0x61, 0x73,
+  0x74, 0x4b, 0x65, 0x79, 0x2c, 0x20, 0x67, 0x72, 0x6f, 0x75, 0x70, 0x5d,
+  0x3b, 0x0a, 0x20, 0x20, 0x7d, 0x0a, 0x7d, 0x0a
 };
-unsigned int json_schema_to_grammar_mjs_len = 19950;
+size_t json_schema_to_grammar_mjs_len = 19964;
diff --git a/examples/server/public/json-schema-to-grammar.mjs b/examples/server/public/json-schema-to-grammar.mjs
index 5237d574599a7..baa6761c8cc2c 100644
--- a/examples/server/public/json-schema-to-grammar.mjs
+++ b/examples/server/public/json-schema-to-grammar.mjs
@@ -19,7 +19,7 @@ const OBJECT_RULE_NAMES = ['object', 'array', 'string', 'number', 'boolean', 'nu
 
 // TODO: support "uri", "email" string formats
 const DATE_RULES = {
-    'date'   : '[0-9] [0-9] [0-9] [0-9] "-" ( "0" [1-9] | "1" [0-2] ) "-" ( [0-2] [0-9] | "3" [0-1] )',
+    'date'   : '[0-9] [0-9] [0-9] [0-9] "-" ( "0" [1-9] | "1" [0-2] ) "-" ( \"0\" [1-9] | [1-2] [0-9] | "3" [0-1] )',
     'time'   : '([01] [0-9] | "2" [0-3]) ":" [0-5] [0-9] ":" [0-5] [0-9] ( "." [0-9] [0-9] [0-9] )? ( "Z" | ( "+" | "-" ) ( [01] [0-9] | "2" [0-3] ) ":" [0-5] [0-9] )',
     'date-time': 'date "T" time',
     'date-string': '"\\"" date "\\"" space',
diff --git a/tests/test-json-schema-to-grammar.cpp b/tests/test-json-schema-to-grammar.cpp
index 89fb8cc1c8192..82a209f5dd0d7 100755
--- a/tests/test-json-schema-to-grammar.cpp
+++ b/tests/test-json-schema-to-grammar.cpp
@@ -135,7 +135,7 @@ static void test_all(const string& lang, std::function<void(const TestCase&)> ru
       ]
     })""",
     R"""(
-      date ::= [0-9] [0-9] [0-9] [0-9] "-" ( "0" [1-9] | "1" [0-2] ) "-" ( [0-2] [0-9] | "3" [0-1] )
+      date ::= [0-9] [0-9] [0-9] [0-9] "-" ( "0" [1-9] | "1" [0-2] ) "-" ( "0" [1-9] | [1-2] [0-9] | "3" [0-1] )
       date-string ::= "\"" date "\"" space
       date-time ::= date "T" time
       date-time-string ::= "\"" date-time "\"" space

From 7628bd8c7679e888b7bcde924a844ee6e6a8e7ef Mon Sep 17 00:00:00 2001
From: Olivier Chafik <ochafik@google.com>
Date: Wed, 20 Mar 2024 14:35:10 +0000
Subject: [PATCH 90/98] json: move json.hpp & json-schema-to-grammar.{cpp,h} to
 common

---
 Makefile                                               | 4 ++--
 common/CMakeLists.txt                                  | 3 +++
 {examples/server => common}/json-schema-to-grammar.cpp | 0
 {examples/server => common}/json-schema-to-grammar.h   | 0
 {examples/server => common}/json.hpp                   | 0
 examples/server/CMakeLists.txt                         | 2 --
 examples/server/json-schema-to-grammar.hpp             | 0
 7 files changed, 5 insertions(+), 4 deletions(-)
 rename {examples/server => common}/json-schema-to-grammar.cpp (100%)
 rename {examples/server => common}/json-schema-to-grammar.h (100%)
 rename {examples/server => common}/json.hpp (100%)
 delete mode 100644 examples/server/json-schema-to-grammar.hpp

diff --git a/Makefile b/Makefile
index 9478fbe91be88..951b848072c10 100644
--- a/Makefile
+++ b/Makefile
@@ -667,7 +667,7 @@ console.o: common/console.cpp common/console.h
 grammar-parser.o: common/grammar-parser.cpp common/grammar-parser.h
 	$(CXX) $(CXXFLAGS) -c $< -o $@
 
-json-schema-to-grammar.o: examples/server/json-schema-to-grammar.cpp examples/server/json-schema-to-grammar.h
+json-schema-to-grammar.o: common/json-schema-to-grammar.cpp common/json-schema-to-grammar.h
 	$(CXX) $(CXXFLAGS) -c $< -o $@
 
 train.o: common/train.cpp common/train.h
@@ -749,7 +749,7 @@ save-load-state: examples/save-load-state/save-load-state.cpp ggml.o llama.o $(C
 	$(CXX) $(CXXFLAGS) -c $< -o $(call GET_OBJ_FILE, $<)
 	$(CXX) $(CXXFLAGS) $(filter-out %.h $<,$^) $(call GET_OBJ_FILE, $<) -o $@ $(LDFLAGS)
 
-server: examples/server/server.cpp examples/server/utils.hpp examples/server/httplib.h examples/server/json.hpp examples/server/index.html.hpp examples/server/index.js.hpp examples/server/completion.js.hpp json-schema-to-grammar.o common/stb_image.h ggml.o llama.o $(COMMON_DEPS) grammar-parser.o $(OBJS)
+server: examples/server/server.cpp examples/server/utils.hpp examples/server/httplib.h common/json.hpp examples/server/index.html.hpp examples/server/index.js.hpp examples/server/completion.js.hpp json-schema-to-grammar.o common/stb_image.h ggml.o llama.o $(COMMON_DEPS) grammar-parser.o $(OBJS)
 	$(CXX) $(CXXFLAGS) -c $< -o $(call GET_OBJ_FILE, $<)
 	$(CXX) $(CXXFLAGS) $(filter-out %.h %.hpp $<,$^) -Iexamples/server $(call GET_OBJ_FILE, $<) -o $@ $(LDFLAGS) $(LWINSOCK2)
 
diff --git a/common/CMakeLists.txt b/common/CMakeLists.txt
index af2629a460b93..10951693ab0a2 100644
--- a/common/CMakeLists.txt
+++ b/common/CMakeLists.txt
@@ -47,6 +47,8 @@ if (BUILD_SHARED_LIBS)
     set_target_properties(${TARGET} PROPERTIES POSITION_INDEPENDENT_CODE ON)
 endif()
 
+set(TARGET json-schema-to-grammar)
+add_library(${TARGET} OBJECT json-schema-to-grammar.cpp json-schema-to-grammar.h)
 
 set(TARGET common)
 
@@ -60,6 +62,7 @@ add_library(${TARGET} STATIC
     console.cpp
     grammar-parser.h
     grammar-parser.cpp
+    json.hpp
     train.h
     train.cpp
     )
diff --git a/examples/server/json-schema-to-grammar.cpp b/common/json-schema-to-grammar.cpp
similarity index 100%
rename from examples/server/json-schema-to-grammar.cpp
rename to common/json-schema-to-grammar.cpp
diff --git a/examples/server/json-schema-to-grammar.h b/common/json-schema-to-grammar.h
similarity index 100%
rename from examples/server/json-schema-to-grammar.h
rename to common/json-schema-to-grammar.h
diff --git a/examples/server/json.hpp b/common/json.hpp
similarity index 100%
rename from examples/server/json.hpp
rename to common/json.hpp
diff --git a/examples/server/CMakeLists.txt b/examples/server/CMakeLists.txt
index 3d027fae129ec..d2ee47d01d767 100644
--- a/examples/server/CMakeLists.txt
+++ b/examples/server/CMakeLists.txt
@@ -2,11 +2,9 @@ set(TARGET server)
 option(LLAMA_SERVER_VERBOSE "Build verbose logging option for Server" ON)
 option(LLAMA_SERVER_SSL "Build SSL support for the server" OFF)
 include_directories(${CMAKE_CURRENT_SOURCE_DIR})
-add_library(json-schema-to-grammar OBJECT json-schema-to-grammar.cpp json-schema-to-grammar.h)
 add_executable(${TARGET}
     server.cpp
     utils.hpp
-    json.hpp
     httplib.h
 )
 install(TARGETS ${TARGET} RUNTIME)
diff --git a/examples/server/json-schema-to-grammar.hpp b/examples/server/json-schema-to-grammar.hpp
deleted file mode 100644
index e69de29bb2d1d..0000000000000

From 10ee30f1b837621ac946a6dd59fd184fb1f72ba4 Mon Sep 17 00:00:00 2001
From: Olivier Chafik <ochafik@google.com>
Date: Wed, 20 Mar 2024 14:47:21 +0000
Subject: [PATCH 91/98] json: indent 4 spaces

---
 common/json-schema-to-grammar.cpp        |   60 +-
 examples/json-schema-pydantic-example.py |  106 +-
 examples/regex-to-grammar.py             |   28 +-
 examples/server/utils.hpp                |   14 +-
 tests/test-json-schema-to-grammar.cpp    | 1577 +++++++++++-----------
 5 files changed, 892 insertions(+), 893 deletions(-)

diff --git a/common/json-schema-to-grammar.cpp b/common/json-schema-to-grammar.cpp
index 389b09d45c0bb..cca69cf5b8ef7 100644
--- a/common/json-schema-to-grammar.cpp
+++ b/common/json-schema-to-grammar.cpp
@@ -177,8 +177,8 @@ class SchemaConverter {
 
     string _visit_pattern(const string& pattern, const string& name) {
         if (!(pattern.front() == '^' && pattern.back() == '$')) {
-          _errors.push_back("Pattern must start with '^' and end with '$'");
-          return "";
+            _errors.push_back("Pattern must start with '^' and end with '$'");
+            return "";
         }
         string sub_pattern = pattern.substr(1, pattern.length() - 2);
         unordered_map<string, string> sub_rule_ids;
@@ -212,21 +212,21 @@ class SchemaConverter {
 
                 string literal;
                 auto flush_literal = [&]() {
-                  if (literal.empty()) {
-                    return false;
-                  }
-                  ret.push_back(make_pair(literal, true));
-                  literal.clear();
-                  return true;
+                    if (literal.empty()) {
+                        return false;
+                    }
+                    ret.push_back(make_pair(literal, true));
+                    literal.clear();
+                    return true;
                 };
 
                 for (const auto& item : seq) {
                     auto is_literal = item.second;
                     if (is_literal) {
-                      literal += item.first;
+                        literal += item.first;
                     } else {
-                      flush_literal();
-                      ret.push_back(item);
+                        flush_literal();
+                        ret.push_back(item);
                     }
                 }
                 flush_literal();
@@ -254,7 +254,7 @@ class SchemaConverter {
                 } else if (c == ')') {
                     i++;
                     if (start > 0 && sub_pattern[start - 1] != '(') {
-                      _errors.push_back("Unbalanced parentheses");
+                        _errors.push_back("Unbalanced parentheses");
                     }
                     return join_seq();
                 } else if (c == '[') {
@@ -270,7 +270,7 @@ class SchemaConverter {
                         }
                     }
                     if (i >= length) {
-                      _errors.push_back("Unbalanced square brackets");
+                        _errors.push_back("Unbalanced square brackets");
                     }
                     square_brackets += ']';
                     i++;
@@ -289,7 +289,7 @@ class SchemaConverter {
                         i++;
                     }
                     if (i >= length) {
-                      _errors.push_back("Unbalanced curly brackets");
+                        _errors.push_back("Unbalanced curly brackets");
                     }
                     curly_brackets += '}';
                     i++;
@@ -547,8 +547,8 @@ class SchemaConverter {
                         for (size_t i = 1; i < tokens.size(); ++i) {
                             string sel = tokens[i];
                             if (target.is_null() || !target.contains(sel)) {
-                              _errors.push_back("Error resolving ref " + ref + ": " + sel + " not in " + target.dump());
-                              return;
+                                _errors.push_back("Error resolving ref " + ref + ": " + sel + " not in " + target.dump());
+                                return;
                             }
                             target = target[sel];
                         }
@@ -698,8 +698,8 @@ class SchemaConverter {
             return _add_rule(rule_name, "object");
         } else {
             if (!schema_type.is_string() || PRIMITIVE_RULES.find(schema_type.get<string>()) == PRIMITIVE_RULES.end()) {
-              _errors.push_back("Unrecognized schema: " + schema.dump());
-              return "";
+                _errors.push_back("Unrecognized schema: " + schema.dump());
+                return "";
             }
             // TODO: support minimum, maximum, exclusiveMinimum, exclusiveMaximum at least for zero
             return _add_rule(rule_name == "root" ? "root" : schema_type.get<string>(), PRIMITIVE_RULES.at(schema_type.get<string>()));
@@ -707,12 +707,12 @@ class SchemaConverter {
     }
 
     void check_errors() {
-      if (!_errors.empty()) {
-        throw std::runtime_error("JSON schema conversion failed:\n" + join(_errors.begin(), _errors.end(), "\n"));
-      }
-      if (!_warnings.empty()) {
-        std::cerr << "WARNING: JSON schema conversion was incomplete: " + join(_warnings.begin(), _warnings.end(), "; ") << std::endl;
-      }
+        if (!_errors.empty()) {
+            throw std::runtime_error("JSON schema conversion failed:\n" + join(_errors.begin(), _errors.end(), "\n"));
+        }
+        if (!_warnings.empty()) {
+            std::cerr << "WARNING: JSON schema conversion was incomplete: " + join(_warnings.begin(), _warnings.end(), "; ") << std::endl;
+        }
     }
 
     string format_grammar() {
@@ -725,10 +725,10 @@ class SchemaConverter {
 };
 
 string json_schema_to_grammar(const json& schema) {
-  SchemaConverter converter([](const string&) { return json::object(); }, /* dotall= */ false);
-  auto copy = schema;
-  converter.resolve_refs(copy, "input");
-  converter.visit(copy, "");
-  converter.check_errors();
-  return converter.format_grammar();
+    SchemaConverter converter([](const string&) { return json::object(); }, /* dotall= */ false);
+    auto copy = schema;
+    converter.resolve_refs(copy, "input");
+    converter.visit(copy, "");
+    converter.check_errors();
+    return converter.format_grammar();
 }
diff --git a/examples/json-schema-pydantic-example.py b/examples/json-schema-pydantic-example.py
index e506968d68c63..69ebfd4093824 100644
--- a/examples/json-schema-pydantic-example.py
+++ b/examples/json-schema-pydantic-example.py
@@ -4,71 +4,71 @@
 #! python json-schema-pydantic-example.py
 
 from pydantic import BaseModel, TypeAdapter
-from annotated_types import MaxLen, MinLen
-from typing import Annotated, Iterable, List, Optional
-import enum, json, requests
+from annotated_types import MinLen
+from typing import Annotated, List, Optional
+import json, requests
 
 if True:
 
-  def create_completion(*, response_model=None, endpoint="http://localhost:8080/v1/chat/completions", messages, **kwargs):
-    '''
-      Creates a chat completion using an OpenAI-compatible endpoint w/ JSON schema support
-      (llama.cpp server, llama-cpp-python, Anyscale / Together...)
+    def create_completion(*, response_model=None, endpoint="http://localhost:8080/v1/chat/completions", messages, **kwargs):
+        '''
+        Creates a chat completion using an OpenAI-compatible endpoint w/ JSON schema support
+        (llama.cpp server, llama-cpp-python, Anyscale / Together...)
 
-      The response_model param takes a type (+ supports Pydantic) and behaves just as w/ Instructor (see below)
-    '''
-    if response_model:
-      type_adapter = TypeAdapter(response_model)
-      schema = type_adapter.json_schema()
-      messages = [{
-        "role": "system",
-        "content": f"You respond in JSON format with the following schema: {json.dumps(schema, indent=2)}"
-      }] + messages
-      response_format={"type": "json_object", "schema": schema}
+        The response_model param takes a type (+ supports Pydantic) and behaves just as w/ Instructor (see below)
+        '''
+        if response_model:
+            type_adapter = TypeAdapter(response_model)
+            schema = type_adapter.json_schema()
+            messages = [{
+                "role": "system",
+                "content": f"You respond in JSON format with the following schema: {json.dumps(schema, indent=2)}"
+            }] + messages
+            response_format={"type": "json_object", "schema": schema}
 
-    data = requests.post(endpoint, headers={"Content-Type": "application/json"},
-                        json=dict(messages=messages, response_format=response_format, **kwargs)).json()
-    if 'error' in data:
-      raise Exception(data['error']['message'])
+        data = requests.post(endpoint, headers={"Content-Type": "application/json"},
+                             json=dict(messages=messages, response_format=response_format, **kwargs)).json()
+        if 'error' in data:
+            raise Exception(data['error']['message'])
 
-    content = data["choices"][0]["message"]["content"]
-    return type_adapter.validate_json(content) if type_adapter else content
+        content = data["choices"][0]["message"]["content"]
+        return type_adapter.validate_json(content) if type_adapter else content
 
 else:
 
-  # This alternative branch uses Instructor + OpenAI client lib.
-  # Instructor support streamed iterable responses, retry & more.
-  # (see https://python.useinstructor.com/)
-  #! pip install instructor openai
-  import instructor, openai
-  client = instructor.patch(
-    openai.OpenAI(api_key="123", base_url="http://localhost:8080"),
-    mode=instructor.Mode.JSON_SCHEMA)
-  create_completion = client.chat.completions.create
+    # This alternative branch uses Instructor + OpenAI client lib.
+    # Instructor support streamed iterable responses, retry & more.
+    # (see https://python.useinstructor.com/)
+    #! pip install instructor openai
+    import instructor, openai
+    client = instructor.patch(
+        openai.OpenAI(api_key="123", base_url="http://localhost:8080"),
+        mode=instructor.Mode.JSON_SCHEMA)
+    create_completion = client.chat.completions.create
 
 
 if __name__ == '__main__':
 
-  class QAPair(BaseModel):
-    question: str
-    concise_answer: str
-    justification: str
+    class QAPair(BaseModel):
+        question: str
+        concise_answer: str
+        justification: str
 
-  class PyramidalSummary(BaseModel):
-    title: str
-    summary: str
-    question_answers: Annotated[List[QAPair], MinLen(2)]
-    sub_sections: Optional[Annotated[List['PyramidalSummary'], MinLen(2)]]
+    class PyramidalSummary(BaseModel):
+        title: str
+        summary: str
+        question_answers: Annotated[List[QAPair], MinLen(2)]
+        sub_sections: Optional[Annotated[List['PyramidalSummary'], MinLen(2)]]
 
-  print("# Summary\n", create_completion(
-    model="...",
-    response_model=PyramidalSummary,
-    messages=[{
-      "role": "user",
-      "content": f"""
-        You are a highly efficient corporate document summarizer.
-        Create a pyramidal summary of an imaginary internal document about our company processes
-        (starting high-level, going down to each sub sections).
-        Keep questions short, and answers even shorter (trivia / quizz style).
-      """
-    }]))
+    print("# Summary\n", create_completion(
+        model="...",
+        response_model=PyramidalSummary,
+        messages=[{
+            "role": "user",
+            "content": f"""
+                You are a highly efficient corporate document summarizer.
+                Create a pyramidal summary of an imaginary internal document about our company processes
+                (starting high-level, going down to each sub sections).
+                Keep questions short, and answers even shorter (trivia / quizz style).
+            """
+        }]))
diff --git a/examples/regex-to-grammar.py b/examples/regex-to-grammar.py
index 7fe8566518e83..c98118e95a858 100644
--- a/examples/regex-to-grammar.py
+++ b/examples/regex-to-grammar.py
@@ -4,17 +4,17 @@
 [_, pattern, *rest] = sys.argv
 
 print(subprocess.check_output(
-  [
-    "python",
-    os.path.join(
-      os.path.dirname(os.path.realpath(__file__)),
-      "json-schema-to-grammar.py"),
-    *rest,
-    "-",
-    "--raw-pattern",
-  ],
-  text=True,
-  input=json.dumps({
-    "type": "string",
-    "pattern": pattern,
-  }, indent=2)))
+    [
+        "python",
+        os.path.join(
+        os.path.dirname(os.path.realpath(__file__)),
+        "json-schema-to-grammar.py"),
+        *rest,
+        "-",
+        "--raw-pattern",
+    ],
+    text=True,
+    input=json.dumps({
+        "type": "string",
+        "pattern": pattern,
+    }, indent=2)))
diff --git a/examples/server/utils.hpp b/examples/server/utils.hpp
index 926f1fd853e0e..9d6ec1a8aa136 100644
--- a/examples/server/utils.hpp
+++ b/examples/server/utils.hpp
@@ -377,14 +377,14 @@ static json oaicompat_completion_params_parse(
     }
 
     if (body.contains("response_format")) {
-      auto response_format = json_value(body, "response_format", json::object());
-      if (response_format.contains("type")) {
-        if (response_format["type"] == "json_object") {
-            llama_params["json_schema"] = json_value(response_format, "schema", json::object());
-        } else {
-            throw std::runtime_error("response_format type not supported: " + response_format["type"].dump());
+        auto response_format = json_value(body, "response_format", json::object());
+        if (response_format.contains("type")) {
+            if (response_format["type"] == "json_object") {
+                llama_params["json_schema"] = json_value(response_format, "schema", json::object());
+            } else {
+                throw std::runtime_error("response_format type not supported: " + response_format["type"].dump());
+            }
         }
-      }
     }
 
     // Handle 'stop' field
diff --git a/tests/test-json-schema-to-grammar.cpp b/tests/test-json-schema-to-grammar.cpp
index 82a209f5dd0d7..2637bf8d211ac 100755
--- a/tests/test-json-schema-to-grammar.cpp
+++ b/tests/test-json-schema-to-grammar.cpp
@@ -20,813 +20,812 @@ static std::string trim(const std::string & source) {
 }
 
 enum TestCaseStatus {
-  SUCCESS, FAILURE
+    SUCCESS,
+    FAILURE
 };
 
 struct TestCase {
-  TestCaseStatus expected_status;
-  string name;
-  string schema;
-  string expected_grammar;
-
-  void _print_failure_header() const {
-    cerr << "#" << endl;
-    cerr << "# Test '" << name.c_str() << "' failed." << endl;
-    cerr << "#" << endl;
-    cerr << schema.c_str() << endl;
-  }
-  void verify(const string& actual_grammar) const {
-    if (trim(actual_grammar) != trim(expected_grammar)) {
-      _print_failure_header();
-      cerr << "# EXPECTED:\n" << expected_grammar.c_str() << endl;
-      cerr << "# ACTUAL:\n" << actual_grammar.c_str() << endl;
-      assert(false);
+    TestCaseStatus expected_status;
+    string name;
+    string schema;
+    string expected_grammar;
+
+    void _print_failure_header() const {
+        cerr << "#" << endl;
+        cerr << "# Test '" << name.c_str() << "' failed." << endl;
+        cerr << "#" << endl;
+        cerr << schema.c_str() << endl;
     }
-  }
-  void verify_expectation_parseable() const {
-    try {
-      auto state = grammar_parser::parse(expected_grammar.c_str());
-      if (state.symbol_ids.find("root") == state.symbol_ids.end()) {
-        throw runtime_error("Grammar failed to parse:\n" + expected_grammar);
-      }
-    } catch (const runtime_error& ex) {
-      _print_failure_header();
-      cerr << "# GRAMMAR ERROR: " << ex.what() << endl;
-      assert(false);
+    void verify(const string& actual_grammar) const {
+        if (trim(actual_grammar) != trim(expected_grammar)) {
+        _print_failure_header();
+        cerr << "# EXPECTED:\n" << expected_grammar.c_str() << endl;
+        cerr << "# ACTUAL:\n" << actual_grammar.c_str() << endl;
+        assert(false);
+        }
     }
-  }
-  void verify_status(TestCaseStatus status) const {
-    if (status != expected_status) {
-      _print_failure_header();
-      cerr << "# EXPECTED STATUS: " << (expected_status == SUCCESS ? "SUCCESS" : "FAILURE") << endl;
-      cerr << "# ACTUAL STATUS: " << (status == SUCCESS ? "SUCCESS" : "FAILURE") << endl;
-      assert(false);
+    void verify_expectation_parseable() const {
+        try {
+            auto state = grammar_parser::parse(expected_grammar.c_str());
+            if (state.symbol_ids.find("root") == state.symbol_ids.end()) {
+                throw runtime_error("Grammar failed to parse:\n" + expected_grammar);
+            }
+        } catch (const runtime_error& ex) {
+            _print_failure_header();
+            cerr << "# GRAMMAR ERROR: " << ex.what() << endl;
+            assert(false);
+        }
+    }
+    void verify_status(TestCaseStatus status) const {
+        if (status != expected_status) {
+            _print_failure_header();
+            cerr << "# EXPECTED STATUS: " << (expected_status == SUCCESS ? "SUCCESS" : "FAILURE") << endl;
+            cerr << "# ACTUAL STATUS: " << (status == SUCCESS ? "SUCCESS" : "FAILURE") << endl;
+            assert(false);
+        }
     }
-  }
 };
 
 static void write(const string& file, const string& content) {
-  ofstream f;
-  f.open(file.c_str());
-  f << content.c_str();
-  f.close();
+    ofstream f;
+    f.open(file.c_str());
+    f << content.c_str();
+    f.close();
 }
 
 static string read(const string& file) {
-  ostringstream actuals;
-  actuals << ifstream(file.c_str()).rdbuf();
-  return actuals.str();
+    ostringstream actuals;
+    actuals << ifstream(file.c_str()).rdbuf();
+    return actuals.str();
 }
 
 static void test_all(const string& lang, std::function<void(const TestCase&)> runner) {
-  cerr << "#\n# Testing JSON schema conversion (" << lang.c_str() << ")\n#" << endl;
-  auto test = [&](const TestCase& tc) {
-    cerr << "- " << tc.name.c_str() << (tc.expected_status == FAILURE ? " (failure expected)" : "") << endl;
-    runner(tc);
-  };
-
-  test({
-    FAILURE,
-    "unknown type",
-    R"""({
-      "type": "kaboom"
-    })""",
-    ""
-  });
-
-  test({
-    FAILURE,
-    "invalid type type",
-    R"""({
-      "type": 123
-    })""",
-    ""
-  });
-
-  test({
-    SUCCESS,
-    "empty schema (object)",
-    "{}",
-    R"""(
-      array ::= "[" space ( value ("," space value)* )? "]" space
-      boolean ::= ("true" | "false") space
-      null ::= "null" space
-      number ::= ("-"? ([0-9] | [1-9] [0-9]*)) ("." [0-9]+)? ([eE] [-+]? [0-9]+)? space
-      object ::= "{" space ( string ":" space value ("," space string ":" space value)* )? "}" space
-      root ::= object
-      space ::= " "?
-      string ::=  "\"" (
-              [^"\\] |
-              "\\" (["\\/bfnrt] | "u" [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F])
-            )* "\"" space
-      value ::= object | array | string | number | boolean
-    )"""
-  });
-
-  test({
-    SUCCESS,
-    "exotic formats",
-    R"""({
-      "items": [
-        { "format": "date" },
-        { "format": "uuid" },
-        { "format": "time" },
-        { "format": "date-time" }
-      ]
-    })""",
-    R"""(
-      date ::= [0-9] [0-9] [0-9] [0-9] "-" ( "0" [1-9] | "1" [0-2] ) "-" ( "0" [1-9] | [1-2] [0-9] | "3" [0-1] )
-      date-string ::= "\"" date "\"" space
-      date-time ::= date "T" time
-      date-time-string ::= "\"" date-time "\"" space
-      root ::= "[" space date-string "," space uuid "," space time-string "," space date-time-string "]" space
-      space ::= " "?
-      time ::= ([01] [0-9] | "2" [0-3]) ":" [0-5] [0-9] ":" [0-5] [0-9] ( "." [0-9] [0-9] [0-9] )? ( "Z" | ( "+" | "-" ) ( [01] [0-9] | "2" [0-3] ) ":" [0-5] [0-9] )
-      time-string ::= "\"" time "\"" space
-      uuid ::= "\"" [0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F] "-" [0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F] "-" [0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F] "-" [0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F] "-" [0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F] "\"" space
-    )"""
-  });
-
-  test({
-    SUCCESS,
-    "string",
-    R"""({
-      "type": "string"
-    })""",
-    R"""(
-      root ::=  "\"" (
-              [^"\\] |
-              "\\" (["\\/bfnrt] | "u" [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F])
-            )* "\"" space
-      space ::= " "?
-    )"""
-  });
-
-  test({
-    SUCCESS,
-    "boolean",
-    R"""({
-      "type": "boolean"
-    })""",
-    R"""(
-      root ::= ("true" | "false") space
-      space ::= " "?
-    )"""
-  });
-
-  test({
-    SUCCESS,
-    "integer",
-    R"""({
-      "type": "integer"
-    })""",
-    R"""(
-      root ::= ("-"? ([0-9] | [1-9] [0-9]*)) space
-      space ::= " "?
-    )"""
-  });
-
-  test({
-    SUCCESS,
-    "string const",
-    R"""({
-      "const": "foo"
-    })""",
-    R"""(
-      root ::= "\"foo\""
-      space ::= " "?
-    )"""
-  });
-
-  test({
-    FAILURE,
-    "non-string const",
-    R"""({
-      "const": 123
-    })""",
-    ""
-  });
-
-  test({
-    FAILURE,
-    "non-string enum",
-    R"""({
-      "enum": [123]
-    })""",
-    ""
-  });
-
-  test({
-    SUCCESS,
-    "tuple1",
-    R"""({
-      "prefixItems": [{ "type": "string" }]
-    })""",
-    R"""(
-      root ::= "[" space string "]" space
-      space ::= " "?
-      string ::=  "\"" (
-              [^"\\] |
-              "\\" (["\\/bfnrt] | "u" [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F])
-            )* "\"" space
-    )"""
-  });
-
-  test({
-    SUCCESS,
-    "tuple2",
-    R"""({
-      "prefixItems": [{ "type": "string" }, { "type": "number" }]
-    })""",
-    R"""(
-      number ::= ("-"? ([0-9] | [1-9] [0-9]*)) ("." [0-9]+)? ([eE] [-+]? [0-9]+)? space
-      root ::= "[" space string "," space number "]" space
-      space ::= " "?
-      string ::=  "\"" (
-              [^"\\] |
-              "\\" (["\\/bfnrt] | "u" [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F])
-            )* "\"" space
-    )"""
-  });
-
-  test({
-    SUCCESS,
-    "number",
-    R"""({
-      "type": "number"
-    })""",
-    R"""(
-      root ::= ("-"? ([0-9] | [1-9] [0-9]*)) ("." [0-9]+)? ([eE] [-+]? [0-9]+)? space
-      space ::= " "?
-    )"""
-  });
-
-  test({
-    SUCCESS,
-    "minItems",
-    R"""({
-      "items": {
-        "type": "boolean"
-      },
-      "minItems": 2
-    })""",
-    R"""(
-      boolean ::= ("true" | "false") space
-      root ::= "[" space boolean ( "," space boolean )( "," space boolean )* "]" space
-      space ::= " "?
-    )"""
-  });
-
-  test({
-    SUCCESS,
-    "maxItems 1",
-    R"""({
-      "items": {
-        "type": "boolean"
-      },
-      "maxItems": 1
-    })""",
-    R"""(
-      boolean ::= ("true" | "false") space
-      root ::= "[" space ( boolean  )? "]" space
-      space ::= " "?
-    )"""
-  });
-
-  test({
-    SUCCESS,
-    "maxItems 2",
-    R"""({
-      "items": {
-        "type": "boolean"
-      },
-      "maxItems": 2
-    })""",
-    R"""(
-      boolean ::= ("true" | "false") space
-      root ::= "[" space ( boolean ( "," space boolean )? )? "]" space
-      space ::= " "?
-    )"""
-  });
-
-  test({
-    SUCCESS,
-    "min + maxItems",
-    R"""({
-      "items": {
-        "type": ["number", "integer"]
-      },
-      "minItems": 3,
-      "maxItems": 5
-    })""",
-    R"""(
-      integer ::= ("-"? ([0-9] | [1-9] [0-9]*)) space
-      item ::= number | integer
-      number ::= ("-"? ([0-9] | [1-9] [0-9]*)) ("." [0-9]+)? ([eE] [-+]? [0-9]+)? space
-      root ::= "[" space item ( "," space item )( "," space item )( "," space item )?( "," space item )? "]" space
-      space ::= " "?
-    )"""
-  });
-
-  test({
-    SUCCESS,
-    "simple regexp",
-    R"""({
-      "type": "string",
-      "pattern": "^abc?d*efg+(hij)?kl$"
-    })""",
-    R"""(
-      root ::= "\"" "ab" "c"? "d"* "ef" "g"+ ("hij")? "kl" "\"" space
-      space ::= " "?
-    )"""
-  });
-
-  test({
-    SUCCESS,
-    "regexp escapes",
-    R"""({
-      "type": "string",
-      "pattern": "^\\[\\]\\{\\}\\(\\)\\|\\+\\*\\?$"
-    })""",
-    R"""(
-      root ::= "\"" "[]{}()|+*?" "\"" space
-      space ::= " "?
-    )"""
-  });
-
-  test({
-    SUCCESS,
-    "regexp quote",
-    R"""({
-      "type": "string",
-      "pattern": "^\"$"
-    })""",
-    R"""(
-      root ::= "\"" "\"" "\"" space
-      space ::= " "?
-    )"""
-  });
-
-  test({
-    SUCCESS,
-    "regexp",
-    R"""({
-      "type": "string",
-      "pattern": "^(\\([0-9]{1,3}\\))?[0-9]{3}-[0-9]{4} and...$"
-    })""",
-    R"""(
-      dot ::= [\U00000000-\x09\x0B\x0C\x0E-\U0010FFFF]
-      root ::= "\"" ("(" root-1 root-1? root-1? ")")? root-1 root-1 root-1 "-" root-1 root-1 root-1 root-1 " and" dot dot dot "\"" space
-      root-1 ::= [0-9]
-      space ::= " "?
-    )"""
-  });
-
-  test({
-    SUCCESS,
-    "required props",
-    R"""({
-      "type": "object",
-      "properties": {
-        "a": {
-          "type": "string"
-        },
-        "b": {
-          "type": "string"
-        }
-      },
-      "required": [
-        "a",
-        "b"
-      ],
-      "additionalProperties": false,
-      "definitions": {}
-    })""",
-    R"""(
-      a-kv ::= "\"a\"" space ":" space string
-      b-kv ::= "\"b\"" space ":" space string
-      root ::= "{" space a-kv "," space b-kv "}" space
-      space ::= " "?
-      string ::=  "\"" (
-              [^"\\] |
-              "\\" (["\\/bfnrt] | "u" [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F])
-            )* "\"" space
-    )"""
-  });
-
-  test({
-    SUCCESS,
-    "1 optional prop",
-    R"""({
-      "properties": {
-        "a": {
-          "type": "string"
-        }
-      },
-      "additionalProperties": false
-    })""",
-    R"""(
-      a-kv ::= "\"a\"" space ":" space string
-      root ::= "{" space  (a-kv )? "}" space
-      space ::= " "?
-      string ::=  "\"" (
-              [^"\\] |
-              "\\" (["\\/bfnrt] | "u" [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F])
-            )* "\"" space
-    )"""
-  });
-
-  test({
-    SUCCESS,
-    "N optional props",
-    R"""({
-      "properties": {
-        "a": {"type": "string"},
-        "b": {"type": "string"},
-        "c": {"type": "string"}
-      },
-      "additionalProperties": false
-    })""",
-    R"""(
-      a-kv ::= "\"a\"" space ":" space string
-      a-rest ::= ( "," space b-kv )? b-rest
-      b-kv ::= "\"b\"" space ":" space string
-      b-rest ::= ( "," space c-kv )?
-      c-kv ::= "\"c\"" space ":" space string
-      root ::= "{" space  (a-kv a-rest | b-kv b-rest | c-kv )? "}" space
-      space ::= " "?
-      string ::=  "\"" (
-              [^"\\] |
-              "\\" (["\\/bfnrt] | "u" [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F])
-            )* "\"" space
-    )"""
-  });
-
-  test({
-    SUCCESS,
-    "required + optional props",
-    R"""({
-      "properties": {
-        "a": {"type": "string"},
-        "b": {"type": "string"},
-        "c": {"type": "string"},
-        "d": {"type": "string"}
-      },
-      "required": ["a", "b"],
-      "additionalProperties": false
-    })""",
-    R"""(
-      a-kv ::= "\"a\"" space ":" space string
-      b-kv ::= "\"b\"" space ":" space string
-      c-kv ::= "\"c\"" space ":" space string
-      c-rest ::= ( "," space d-kv )?
-      d-kv ::= "\"d\"" space ":" space string
-      root ::= "{" space a-kv "," space b-kv ( "," space ( c-kv c-rest | d-kv ) )? "}" space
-      space ::= " "?
-      string ::=  "\"" (
-              [^"\\] |
-              "\\" (["\\/bfnrt] | "u" [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F])
-            )* "\"" space
-    )"""
-  });
-
-  test({
-    SUCCESS,
-    "additional props",
-    R"""({
-      "type": "object",
-      "additionalProperties": {"type": "array", "items": {"type": "number"}}
-    })""",
-    R"""(
-      additional-kv ::= string ":" space additional-value
-      additional-kvs ::= additional-kv ( "," space additional-kv )*
-      additional-value ::= "[" space ( number ( "," space number )* )? "]" space
-      number ::= ("-"? ([0-9] | [1-9] [0-9]*)) ("." [0-9]+)? ([eE] [-+]? [0-9]+)? space
-      root ::= "{" space  (additional-kvs )? "}" space
-      space ::= " "?
-      string ::=  "\"" (
-              [^"\\] |
-              "\\" (["\\/bfnrt] | "u" [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F])
-            )* "\"" space
-    )"""
-  });
-
-  test({
-    SUCCESS,
-    "additional props (true)",
-    R"""({
-      "type": "object",
-      "additionalProperties": true
-    })""",
-    R"""(
-      array ::= "[" space ( value ("," space value)* )? "]" space
-      boolean ::= ("true" | "false") space
-      null ::= "null" space
-      number ::= ("-"? ([0-9] | [1-9] [0-9]*)) ("." [0-9]+)? ([eE] [-+]? [0-9]+)? space
-      object ::= "{" space ( string ":" space value ("," space string ":" space value)* )? "}" space
-      root ::= object
-      space ::= " "?
-      string ::=  "\"" (
-              [^"\\] |
-              "\\" (["\\/bfnrt] | "u" [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F])
-            )* "\"" space
-      value ::= object | array | string | number | boolean
-    )"""
-  });
-
-  test({
-    SUCCESS,
-    "additional props (implicit)",
-    R"""({
-      "type": "object"
-    })""",
-    R"""(
-      array ::= "[" space ( value ("," space value)* )? "]" space
-      boolean ::= ("true" | "false") space
-      null ::= "null" space
-      number ::= ("-"? ([0-9] | [1-9] [0-9]*)) ("." [0-9]+)? ([eE] [-+]? [0-9]+)? space
-      object ::= "{" space ( string ":" space value ("," space string ":" space value)* )? "}" space
-      root ::= object
-      space ::= " "?
-      string ::=  "\"" (
-              [^"\\] |
-              "\\" (["\\/bfnrt] | "u" [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F])
-            )* "\"" space
-      value ::= object | array | string | number | boolean
-    )"""
-  });
-
-  test({
-    SUCCESS,
-    "empty w/o additional props",
-    R"""({
-      "type": "object",
-      "additionalProperties": false
-    })""",
-    R"""(
-      root ::= "{" space  "}" space
-      space ::= " "?
-    )"""
-  });
-
-  test({
-    SUCCESS,
-    "required + additional props",
-    R"""({
-      "type": "object",
-      "properties": {
-        "a": {"type": "number"}
-      },
-      "required": ["a"],
-      "additionalProperties": {"type": "string"}
-    })""",
-    R"""(
-      a-kv ::= "\"a\"" space ":" space number
-      additional-kv ::= string ":" space string
-      additional-kvs ::= additional-kv ( "," space additional-kv )*
-      number ::= ("-"? ([0-9] | [1-9] [0-9]*)) ("." [0-9]+)? ([eE] [-+]? [0-9]+)? space
-      root ::= "{" space a-kv ( "," space ( additional-kvs ) )? "}" space
-      space ::= " "?
-      string ::=  "\"" (
-              [^"\\] |
-              "\\" (["\\/bfnrt] | "u" [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F])
-            )* "\"" space
-    )"""
-  });
-
-  test({
-    SUCCESS,
-    "optional + additional props",
-    R"""({
-      "type": "object",
-      "properties": {
-        "a": {"type": "number"}
-      },
-      "additionalProperties": {"type": "number"}
-    })""",
-    R"""(
-      a-kv ::= "\"a\"" space ":" space number
-      a-rest ::= additional-kvs
-      additional-kv ::= string ":" space number
-      additional-kvs ::= additional-kv ( "," space additional-kv )*
-      number ::= ("-"? ([0-9] | [1-9] [0-9]*)) ("." [0-9]+)? ([eE] [-+]? [0-9]+)? space
-      root ::= "{" space  (a-kv a-rest | additional-kvs )? "}" space
-      space ::= " "?
-      string ::=  "\"" (
-              [^"\\] |
-              "\\" (["\\/bfnrt] | "u" [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F])
-            )* "\"" space
-    )"""
-  });
-
-  test({
-    SUCCESS,
-    "required + optional + additional props",
-    R"""({
-      "type": "object",
-      "properties": {
-        "a": {"type": "number"},
-        "b": {"type": "number"}
-      },
-      "required": ["a"],
-      "additionalProperties": {"type": "number"}
-    })""",
-    R"""(
-      a-kv ::= "\"a\"" space ":" space number
-      additional-kv ::= string ":" space number
-      additional-kvs ::= additional-kv ( "," space additional-kv )*
-      b-kv ::= "\"b\"" space ":" space number
-      b-rest ::= additional-kvs
-      number ::= ("-"? ([0-9] | [1-9] [0-9]*)) ("." [0-9]+)? ([eE] [-+]? [0-9]+)? space
-      root ::= "{" space a-kv ( "," space ( b-kv b-rest | additional-kvs ) )? "}" space
-      space ::= " "?
-      string ::=  "\"" (
-              [^"\\] |
-              "\\" (["\\/bfnrt] | "u" [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F])
-            )* "\"" space
-    )"""
-  });
-
-  test({
-    SUCCESS,
-    "top-level $ref",
-    R"""({
-      "$ref": "#/definitions/MyType",
-      "definitions": {
-        "MyType": {
-          "type": "object",
-          "properties": {
-            "a": {
-              "type": "string"
-            }
-          },
-          "required": [
-            "a"
-          ],
-          "additionalProperties": false
-        }
-      }
-    })""",
-    R"""(
-      MyType ::= "{" space MyType-a-kv "}" space
-      MyType-a-kv ::= "\"a\"" space ":" space string
-      root ::= MyType
-      space ::= " "?
-      string ::=  "\"" (
-              [^"\\] |
-              "\\" (["\\/bfnrt] | "u" [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F])
-            )* "\"" space
-    )"""
-  });
-
-  test({
-    SUCCESS,
-    "anyOf",
-    R"""({
-      "anyOf": [
-        {"$ref": "#/definitions/foo"},
-        {"$ref": "#/definitions/bar"}
-      ],
-      "definitions": {
-        "foo": {
-          "properties": {"a": {"type": "number"}}
-        },
-        "bar": {
-          "properties": {"b": {"type": "number"}}
-        }
-      },
-      "type": "object"
-    })""",
-    R"""(
-      alternative-0 ::= foo
-      alternative-1 ::= bar
-      bar ::= "{" space  (bar-b-kv )? "}" space
-      bar-b-kv ::= "\"b\"" space ":" space number
-      foo ::= "{" space  (foo-a-kv )? "}" space
-      foo-a-kv ::= "\"a\"" space ":" space number
-      number ::= ("-"? ([0-9] | [1-9] [0-9]*)) ("." [0-9]+)? ([eE] [-+]? [0-9]+)? space
-      root ::= alternative-0 | alternative-1
-      space ::= " "?
-    )"""
-  });
-
-  test({
-    SUCCESS,
-    "mix of allOf, anyOf and $ref (similar to https://json.schemastore.org/tsconfig.json)",
-    R"""({
-      "allOf": [
-        {"$ref": "#/definitions/foo"},
-        {"$ref": "#/definitions/bar"},
-        {
-          "anyOf": [
-            {"$ref": "#/definitions/baz"},
-            {"$ref": "#/definitions/bam"}
-          ]
-        }
-      ],
-      "definitions": {
-        "foo": {
-          "properties": {"a": {"type": "number"}}
-        },
-        "bar": {
-          "properties": {"b": {"type": "number"}}
-        },
-        "bam": {
-          "properties": {"c": {"type": "number"}}
-        },
-        "baz": {
-          "properties": {"d": {"type": "number"}}
-        }
-      },
-      "type": "object"
-    })""",
-    R"""(
-      a-kv ::= "\"a\"" space ":" space number
-      b-kv ::= "\"b\"" space ":" space number
-      c-kv ::= "\"c\"" space ":" space number
-      d-kv ::= "\"d\"" space ":" space number
-      d-rest ::= ( "," space c-kv )?
-      number ::= ("-"? ([0-9] | [1-9] [0-9]*)) ("." [0-9]+)? ([eE] [-+]? [0-9]+)? space
-      root ::= "{" space a-kv "," space b-kv ( "," space ( d-kv d-rest | c-kv ) )? "}" space
-      space ::= " "?
-    )"""
-  });
-
-  test({
-    SUCCESS,
-    "conflicting names",
-    R"""({
-      "type": "object",
-      "properties": {
-        "number": {
-          "type": "object",
-          "properties": {
-            "number": {
-              "type": "object",
-              "properties": {
-                "root": {
-                  "type": "number"
+    cerr << "#\n# Testing JSON schema conversion (" << lang.c_str() << ")\n#" << endl;
+    auto test = [&](const TestCase& tc) {
+        cerr << "- " << tc.name.c_str() << (tc.expected_status == FAILURE ? " (failure expected)" : "") << endl;
+        runner(tc);
+    };
+
+    test({
+        FAILURE,
+        "unknown type",
+        R"""({
+            "type": "kaboom"
+        })""",
+        ""
+    });
+
+    test({
+        FAILURE,
+        "invalid type type",
+        R"""({
+            "type": 123
+        })""",
+        ""
+    });
+
+    test({
+        SUCCESS,
+        "empty schema (object)",
+        "{}",
+        R"""(
+            array ::= "[" space ( value ("," space value)* )? "]" space
+            boolean ::= ("true" | "false") space
+            null ::= "null" space
+            number ::= ("-"? ([0-9] | [1-9] [0-9]*)) ("." [0-9]+)? ([eE] [-+]? [0-9]+)? space
+            object ::= "{" space ( string ":" space value ("," space string ":" space value)* )? "}" space
+            root ::= object
+            space ::= " "?
+            string ::=  "\"" (
+                    [^"\\] |
+                    "\\" (["\\/bfnrt] | "u" [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F])
+                    )* "\"" space
+            value ::= object | array | string | number | boolean
+        )"""
+    });
+
+    test({
+        SUCCESS,
+        "exotic formats",
+        R"""({
+            "items": [
+                { "format": "date" },
+                { "format": "uuid" },
+                { "format": "time" },
+                { "format": "date-time" }
+            ]
+        })""",
+        R"""(
+            date ::= [0-9] [0-9] [0-9] [0-9] "-" ( "0" [1-9] | "1" [0-2] ) "-" ( "0" [1-9] | [1-2] [0-9] | "3" [0-1] )
+            date-string ::= "\"" date "\"" space
+            date-time ::= date "T" time
+            date-time-string ::= "\"" date-time "\"" space
+            root ::= "[" space date-string "," space uuid "," space time-string "," space date-time-string "]" space
+            space ::= " "?
+            time ::= ([01] [0-9] | "2" [0-3]) ":" [0-5] [0-9] ":" [0-5] [0-9] ( "." [0-9] [0-9] [0-9] )? ( "Z" | ( "+" | "-" ) ( [01] [0-9] | "2" [0-3] ) ":" [0-5] [0-9] )
+            time-string ::= "\"" time "\"" space
+            uuid ::= "\"" [0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F] "-" [0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F] "-" [0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F] "-" [0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F] "-" [0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F] "\"" space
+        )"""
+    });
+
+    test({
+        SUCCESS,
+        "string",
+        R"""({
+            "type": "string"
+        })""",
+        R"""(
+            root ::=  "\"" (
+                    [^"\\] |
+                    "\\" (["\\/bfnrt] | "u" [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F])
+                    )* "\"" space
+            space ::= " "?
+        )"""
+    });
+
+    test({
+        SUCCESS,
+        "boolean",
+        R"""({
+            "type": "boolean"
+        })""",
+        R"""(
+            root ::= ("true" | "false") space
+            space ::= " "?
+        )"""
+    });
+
+    test({
+        SUCCESS,
+        "integer",
+        R"""({
+            "type": "integer"
+        })""",
+        R"""(
+            root ::= ("-"? ([0-9] | [1-9] [0-9]*)) space
+            space ::= " "?
+        )"""
+    });
+
+    test({
+        SUCCESS,
+        "string const",
+        R"""({
+            "const": "foo"
+        })""",
+        R"""(
+            root ::= "\"foo\""
+            space ::= " "?
+        )"""
+    });
+
+    test({
+        FAILURE,
+        "non-string const",
+        R"""({
+            "const": 123
+        })""",
+        ""
+    });
+
+    test({
+        FAILURE,
+        "non-string enum",
+        R"""({
+            "enum": [123]
+        })""",
+        ""
+    });
+
+    test({
+        SUCCESS,
+        "tuple1",
+        R"""({
+            "prefixItems": [{ "type": "string" }]
+        })""",
+        R"""(
+            root ::= "[" space string "]" space
+            space ::= " "?
+            string ::=  "\"" (
+                    [^"\\] |
+                    "\\" (["\\/bfnrt] | "u" [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F])
+                    )* "\"" space
+        )"""
+    });
+
+    test({
+        SUCCESS,
+        "tuple2",
+        R"""({
+            "prefixItems": [{ "type": "string" }, { "type": "number" }]
+        })""",
+        R"""(
+            number ::= ("-"? ([0-9] | [1-9] [0-9]*)) ("." [0-9]+)? ([eE] [-+]? [0-9]+)? space
+            root ::= "[" space string "," space number "]" space
+            space ::= " "?
+            string ::=  "\"" (
+                    [^"\\] |
+                    "\\" (["\\/bfnrt] | "u" [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F])
+                    )* "\"" space
+        )"""
+    });
+
+    test({
+        SUCCESS,
+        "number",
+        R"""({
+            "type": "number"
+        })""",
+        R"""(
+            root ::= ("-"? ([0-9] | [1-9] [0-9]*)) ("." [0-9]+)? ([eE] [-+]? [0-9]+)? space
+            space ::= " "?
+        )"""
+    });
+
+    test({
+        SUCCESS,
+        "minItems",
+        R"""({
+            "items": {
+                "type": "boolean"
+            },
+            "minItems": 2
+        })""",
+        R"""(
+            boolean ::= ("true" | "false") space
+            root ::= "[" space boolean ( "," space boolean )( "," space boolean )* "]" space
+            space ::= " "?
+        )"""
+    });
+
+    test({
+        SUCCESS,
+        "maxItems 1",
+        R"""({
+            "items": {
+                "type": "boolean"
+            },
+            "maxItems": 1
+        })""",
+        R"""(
+            boolean ::= ("true" | "false") space
+            root ::= "[" space ( boolean  )? "]" space
+            space ::= " "?
+        )"""
+    });
+
+    test({
+        SUCCESS,
+        "maxItems 2",
+        R"""({
+            "items": {
+                "type": "boolean"
+            },
+            "maxItems": 2
+        })""",
+        R"""(
+            boolean ::= ("true" | "false") space
+            root ::= "[" space ( boolean ( "," space boolean )? )? "]" space
+            space ::= " "?
+        )"""
+    });
+
+    test({
+        SUCCESS,
+        "min + maxItems",
+        R"""({
+            "items": {
+                "type": ["number", "integer"]
+            },
+            "minItems": 3,
+            "maxItems": 5
+        })""",
+        R"""(
+            integer ::= ("-"? ([0-9] | [1-9] [0-9]*)) space
+            item ::= number | integer
+            number ::= ("-"? ([0-9] | [1-9] [0-9]*)) ("." [0-9]+)? ([eE] [-+]? [0-9]+)? space
+            root ::= "[" space item ( "," space item )( "," space item )( "," space item )?( "," space item )? "]" space
+            space ::= " "?
+        )"""
+    });
+
+    test({
+        SUCCESS,
+        "simple regexp",
+        R"""({
+            "type": "string",
+            "pattern": "^abc?d*efg+(hij)?kl$"
+        })""",
+        R"""(
+            root ::= "\"" "ab" "c"? "d"* "ef" "g"+ ("hij")? "kl" "\"" space
+            space ::= " "?
+        )"""
+    });
+
+    test({
+        SUCCESS,
+        "regexp escapes",
+        R"""({
+            "type": "string",
+            "pattern": "^\\[\\]\\{\\}\\(\\)\\|\\+\\*\\?$"
+        })""",
+        R"""(
+            root ::= "\"" "[]{}()|+*?" "\"" space
+            space ::= " "?
+        )"""
+    });
+
+    test({
+        SUCCESS,
+        "regexp quote",
+        R"""({
+            "type": "string",
+            "pattern": "^\"$"
+        })""",
+        R"""(
+            root ::= "\"" "\"" "\"" space
+            space ::= " "?
+        )"""
+    });
+
+    test({
+        SUCCESS,
+        "regexp",
+        R"""({
+            "type": "string",
+            "pattern": "^(\\([0-9]{1,3}\\))?[0-9]{3}-[0-9]{4} and...$"
+        })""",
+        R"""(
+            dot ::= [\U00000000-\x09\x0B\x0C\x0E-\U0010FFFF]
+            root ::= "\"" ("(" root-1 root-1? root-1? ")")? root-1 root-1 root-1 "-" root-1 root-1 root-1 root-1 " and" dot dot dot "\"" space
+            root-1 ::= [0-9]
+            space ::= " "?
+        )"""
+    });
+
+    test({
+        SUCCESS,
+        "required props",
+        R"""({
+            "type": "object",
+            "properties": {
+                "a": {
+                "type": "string"
+                },
+                "b": {
+                "type": "string"
+                }
+            },
+            "required": [
+                "a",
+                "b"
+            ],
+            "additionalProperties": false,
+            "definitions": {}
+        })""",
+        R"""(
+            a-kv ::= "\"a\"" space ":" space string
+            b-kv ::= "\"b\"" space ":" space string
+            root ::= "{" space a-kv "," space b-kv "}" space
+            space ::= " "?
+            string ::=  "\"" (
+                    [^"\\] |
+                    "\\" (["\\/bfnrt] | "u" [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F])
+                    )* "\"" space
+        )"""
+    });
+
+    test({
+        SUCCESS,
+        "1 optional prop",
+        R"""({
+            "properties": {
+                "a": {
+                "type": "string"
+                }
+            },
+            "additionalProperties": false
+        })""",
+        R"""(
+            a-kv ::= "\"a\"" space ":" space string
+            root ::= "{" space  (a-kv )? "}" space
+            space ::= " "?
+            string ::=  "\"" (
+                    [^"\\] |
+                    "\\" (["\\/bfnrt] | "u" [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F])
+                    )* "\"" space
+        )"""
+    });
+
+    test({
+        SUCCESS,
+        "N optional props",
+        R"""({
+            "properties": {
+                "a": {"type": "string"},
+                "b": {"type": "string"},
+                "c": {"type": "string"}
+            },
+            "additionalProperties": false
+        })""",
+        R"""(
+            a-kv ::= "\"a\"" space ":" space string
+            a-rest ::= ( "," space b-kv )? b-rest
+            b-kv ::= "\"b\"" space ":" space string
+            b-rest ::= ( "," space c-kv )?
+            c-kv ::= "\"c\"" space ":" space string
+            root ::= "{" space  (a-kv a-rest | b-kv b-rest | c-kv )? "}" space
+            space ::= " "?
+            string ::=  "\"" (
+                    [^"\\] |
+                    "\\" (["\\/bfnrt] | "u" [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F])
+                    )* "\"" space
+        )"""
+    });
+
+    test({
+        SUCCESS,
+        "required + optional props",
+        R"""({
+            "properties": {
+                "a": {"type": "string"},
+                "b": {"type": "string"},
+                "c": {"type": "string"},
+                "d": {"type": "string"}
+            },
+            "required": ["a", "b"],
+            "additionalProperties": false
+        })""",
+        R"""(
+            a-kv ::= "\"a\"" space ":" space string
+            b-kv ::= "\"b\"" space ":" space string
+            c-kv ::= "\"c\"" space ":" space string
+            c-rest ::= ( "," space d-kv )?
+            d-kv ::= "\"d\"" space ":" space string
+            root ::= "{" space a-kv "," space b-kv ( "," space ( c-kv c-rest | d-kv ) )? "}" space
+            space ::= " "?
+            string ::=  "\"" (
+                    [^"\\] |
+                    "\\" (["\\/bfnrt] | "u" [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F])
+                    )* "\"" space
+        )"""
+    });
+
+    test({
+        SUCCESS,
+        "additional props",
+        R"""({
+            "type": "object",
+            "additionalProperties": {"type": "array", "items": {"type": "number"}}
+        })""",
+        R"""(
+            additional-kv ::= string ":" space additional-value
+            additional-kvs ::= additional-kv ( "," space additional-kv )*
+            additional-value ::= "[" space ( number ( "," space number )* )? "]" space
+            number ::= ("-"? ([0-9] | [1-9] [0-9]*)) ("." [0-9]+)? ([eE] [-+]? [0-9]+)? space
+            root ::= "{" space  (additional-kvs )? "}" space
+            space ::= " "?
+            string ::=  "\"" (
+                    [^"\\] |
+                    "\\" (["\\/bfnrt] | "u" [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F])
+                    )* "\"" space
+        )"""
+    });
+
+    test({
+        SUCCESS,
+        "additional props (true)",
+        R"""({
+            "type": "object",
+            "additionalProperties": true
+        })""",
+        R"""(
+            array ::= "[" space ( value ("," space value)* )? "]" space
+            boolean ::= ("true" | "false") space
+            null ::= "null" space
+            number ::= ("-"? ([0-9] | [1-9] [0-9]*)) ("." [0-9]+)? ([eE] [-+]? [0-9]+)? space
+            object ::= "{" space ( string ":" space value ("," space string ":" space value)* )? "}" space
+            root ::= object
+            space ::= " "?
+            string ::=  "\"" (
+                    [^"\\] |
+                    "\\" (["\\/bfnrt] | "u" [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F])
+                    )* "\"" space
+            value ::= object | array | string | number | boolean
+        )"""
+    });
+
+    test({
+        SUCCESS,
+        "additional props (implicit)",
+        R"""({
+            "type": "object"
+        })""",
+        R"""(
+            array ::= "[" space ( value ("," space value)* )? "]" space
+            boolean ::= ("true" | "false") space
+            null ::= "null" space
+            number ::= ("-"? ([0-9] | [1-9] [0-9]*)) ("." [0-9]+)? ([eE] [-+]? [0-9]+)? space
+            object ::= "{" space ( string ":" space value ("," space string ":" space value)* )? "}" space
+            root ::= object
+            space ::= " "?
+            string ::=  "\"" (
+                    [^"\\] |
+                    "\\" (["\\/bfnrt] | "u" [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F])
+                    )* "\"" space
+            value ::= object | array | string | number | boolean
+        )"""
+    });
+
+    test({
+        SUCCESS,
+        "empty w/o additional props",
+        R"""({
+            "type": "object",
+            "additionalProperties": false
+        })""",
+        R"""(
+            root ::= "{" space  "}" space
+            space ::= " "?
+        )"""
+    });
+
+    test({
+        SUCCESS,
+        "required + additional props",
+        R"""({
+            "type": "object",
+            "properties": {
+                "a": {"type": "number"}
+            },
+            "required": ["a"],
+            "additionalProperties": {"type": "string"}
+        })""",
+        R"""(
+            a-kv ::= "\"a\"" space ":" space number
+            additional-kv ::= string ":" space string
+            additional-kvs ::= additional-kv ( "," space additional-kv )*
+            number ::= ("-"? ([0-9] | [1-9] [0-9]*)) ("." [0-9]+)? ([eE] [-+]? [0-9]+)? space
+            root ::= "{" space a-kv ( "," space ( additional-kvs ) )? "}" space
+            space ::= " "?
+            string ::=  "\"" (
+                    [^"\\] |
+                    "\\" (["\\/bfnrt] | "u" [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F])
+                    )* "\"" space
+        )"""
+    });
+
+    test({
+        SUCCESS,
+        "optional + additional props",
+        R"""({
+            "type": "object",
+            "properties": {
+                "a": {"type": "number"}
+            },
+            "additionalProperties": {"type": "number"}
+        })""",
+        R"""(
+            a-kv ::= "\"a\"" space ":" space number
+            a-rest ::= additional-kvs
+            additional-kv ::= string ":" space number
+            additional-kvs ::= additional-kv ( "," space additional-kv )*
+            number ::= ("-"? ([0-9] | [1-9] [0-9]*)) ("." [0-9]+)? ([eE] [-+]? [0-9]+)? space
+            root ::= "{" space  (a-kv a-rest | additional-kvs )? "}" space
+            space ::= " "?
+            string ::=  "\"" (
+                    [^"\\] |
+                    "\\" (["\\/bfnrt] | "u" [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F])
+                    )* "\"" space
+        )"""
+    });
+
+    test({
+        SUCCESS,
+        "required + optional + additional props",
+        R"""({
+            "type": "object",
+            "properties": {
+                "a": {"type": "number"},
+                "b": {"type": "number"}
+            },
+            "required": ["a"],
+            "additionalProperties": {"type": "number"}
+        })""",
+        R"""(
+            a-kv ::= "\"a\"" space ":" space number
+            additional-kv ::= string ":" space number
+            additional-kvs ::= additional-kv ( "," space additional-kv )*
+            b-kv ::= "\"b\"" space ":" space number
+            b-rest ::= additional-kvs
+            number ::= ("-"? ([0-9] | [1-9] [0-9]*)) ("." [0-9]+)? ([eE] [-+]? [0-9]+)? space
+            root ::= "{" space a-kv ( "," space ( b-kv b-rest | additional-kvs ) )? "}" space
+            space ::= " "?
+            string ::=  "\"" (
+                    [^"\\] |
+                    "\\" (["\\/bfnrt] | "u" [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F])
+                    )* "\"" space
+        )"""
+    });
+
+    test({
+        SUCCESS,
+        "top-level $ref",
+        R"""({
+            "$ref": "#/definitions/MyType",
+            "definitions": {
+                "MyType": {
+                "type": "object",
+                "properties": {
+                    "a": {
+                    "type": "string"
+                    }
+                },
+                "required": [
+                    "a"
+                ],
+                "additionalProperties": false
                 }
-              },
-              "required": [
-                "root"
-              ],
-              "additionalProperties": false
             }
-          },
-          "required": [
-            "number"
-          ],
-          "additionalProperties": false
-        }
-      },
-      "required": [
-        "number"
-      ],
-      "additionalProperties": false,
-      "definitions": {}
-    })""",
-    R"""(
-      number ::= ("-"? ([0-9] | [1-9] [0-9]*)) ("." [0-9]+)? ([eE] [-+]? [0-9]+)? space
-      number- ::= "{" space number-number-kv "}" space
-      number-kv ::= "\"number\"" space ":" space number-
-      number-number ::= "{" space number-number-root-kv "}" space
-      number-number-kv ::= "\"number\"" space ":" space number-number
-      number-number-root-kv ::= "\"root\"" space ":" space number
-      root ::= "{" space number-kv "}" space
-      space ::= " "?
-    )"""
-  });
+        })""",
+        R"""(
+            MyType ::= "{" space MyType-a-kv "}" space
+            MyType-a-kv ::= "\"a\"" space ":" space string
+            root ::= MyType
+            space ::= " "?
+            string ::=  "\"" (
+                    [^"\\] |
+                    "\\" (["\\/bfnrt] | "u" [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F])
+                    )* "\"" space
+        )"""
+    });
+
+    test({
+        SUCCESS,
+        "anyOf",
+        R"""({
+            "anyOf": [
+                {"$ref": "#/definitions/foo"},
+                {"$ref": "#/definitions/bar"}
+            ],
+            "definitions": {
+                "foo": {
+                "properties": {"a": {"type": "number"}}
+                },
+                "bar": {
+                "properties": {"b": {"type": "number"}}
+                }
+            },
+            "type": "object"
+        })""",
+        R"""(
+            alternative-0 ::= foo
+            alternative-1 ::= bar
+            bar ::= "{" space  (bar-b-kv )? "}" space
+            bar-b-kv ::= "\"b\"" space ":" space number
+            foo ::= "{" space  (foo-a-kv )? "}" space
+            foo-a-kv ::= "\"a\"" space ":" space number
+            number ::= ("-"? ([0-9] | [1-9] [0-9]*)) ("." [0-9]+)? ([eE] [-+]? [0-9]+)? space
+            root ::= alternative-0 | alternative-1
+            space ::= " "?
+        )"""
+    });
+
+    test({
+        SUCCESS,
+        "mix of allOf, anyOf and $ref (similar to https://json.schemastore.org/tsconfig.json)",
+        R"""({
+            "allOf": [
+                {"$ref": "#/definitions/foo"},
+                {"$ref": "#/definitions/bar"},
+                {
+                "anyOf": [
+                    {"$ref": "#/definitions/baz"},
+                    {"$ref": "#/definitions/bam"}
+                ]
+                }
+            ],
+            "definitions": {
+                "foo": {
+                "properties": {"a": {"type": "number"}}
+                },
+                "bar": {
+                "properties": {"b": {"type": "number"}}
+                },
+                "bam": {
+                "properties": {"c": {"type": "number"}}
+                },
+                "baz": {
+                "properties": {"d": {"type": "number"}}
+                }
+            },
+            "type": "object"
+        })""",
+        R"""(
+            a-kv ::= "\"a\"" space ":" space number
+            b-kv ::= "\"b\"" space ":" space number
+            c-kv ::= "\"c\"" space ":" space number
+            d-kv ::= "\"d\"" space ":" space number
+            d-rest ::= ( "," space c-kv )?
+            number ::= ("-"? ([0-9] | [1-9] [0-9]*)) ("." [0-9]+)? ([eE] [-+]? [0-9]+)? space
+            root ::= "{" space a-kv "," space b-kv ( "," space ( d-kv d-rest | c-kv ) )? "}" space
+            space ::= " "?
+        )"""
+    });
+
+    test({
+        SUCCESS,
+        "conflicting names",
+        R"""({
+            "type": "object",
+            "properties": {
+                "number": {
+                "type": "object",
+                "properties": {
+                    "number": {
+                    "type": "object",
+                    "properties": {
+                        "root": {
+                        "type": "number"
+                        }
+                    },
+                    "required": [
+                        "root"
+                    ],
+                    "additionalProperties": false
+                    }
+                },
+                "required": [
+                    "number"
+                ],
+                "additionalProperties": false
+                }
+            },
+            "required": [
+                "number"
+            ],
+            "additionalProperties": false,
+            "definitions": {}
+        })""",
+        R"""(
+            number ::= ("-"? ([0-9] | [1-9] [0-9]*)) ("." [0-9]+)? ([eE] [-+]? [0-9]+)? space
+            number- ::= "{" space number-number-kv "}" space
+            number-kv ::= "\"number\"" space ":" space number-
+            number-number ::= "{" space number-number-root-kv "}" space
+            number-number-kv ::= "\"number\"" space ":" space number-number
+            number-number-root-kv ::= "\"root\"" space ":" space number
+            root ::= "{" space number-kv "}" space
+            space ::= " "?
+        )"""
+    });
 }
 
 int main() {
-  test_all("C++", [](const TestCase& tc) {
-    try {
-      tc.verify(json_schema_to_grammar(nlohmann::json::parse(tc.schema)));
-      tc.verify_status(SUCCESS);
-    } catch (const runtime_error& ex) {
-      cerr << "Error: " << ex.what() << endl;
-      tc.verify_status(FAILURE);
-    }
-  });
-  test_all("Python", [](const TestCase& tc) {
-
-    write("test-json-schema-input.tmp", tc.schema);
-    tc.verify_status(std::system(
-      "python ./examples/json-schema-to-grammar.py test-json-schema-input.tmp > test-grammar-output.tmp") == 0 ? SUCCESS : FAILURE);
-    tc.verify(read("test-grammar-output.tmp"));
-  });
-  test_all("JavaScript", [](const TestCase& tc) {
-
-    write("test-json-schema-input.tmp", tc.schema);
-    tc.verify_status(std::system(
-      "node ./tests/run-json-schema-to-grammar.mjs test-json-schema-input.tmp > test-grammar-output.tmp") == 0 ? SUCCESS : FAILURE);
-    tc.verify(read("test-grammar-output.tmp"));
-  });
-
-  test_all("Check Expectations Validity", [](const TestCase& tc) {
-    if (tc.expected_status == SUCCESS) {
-      tc.verify_expectation_parseable();
-    }
-  });
+    test_all("C++", [](const TestCase& tc) {
+        try {
+            tc.verify(json_schema_to_grammar(nlohmann::json::parse(tc.schema)));
+            tc.verify_status(SUCCESS);
+        } catch (const runtime_error& ex) {
+            cerr << "Error: " << ex.what() << endl;
+            tc.verify_status(FAILURE);
+        }
+    });
+    test_all("Python", [](const TestCase& tc) {
+        write("test-json-schema-input.tmp", tc.schema);
+        tc.verify_status(std::system(
+            "python ./examples/json-schema-to-grammar.py test-json-schema-input.tmp > test-grammar-output.tmp") == 0 ? SUCCESS : FAILURE);
+        tc.verify(read("test-grammar-output.tmp"));
+    });
+    test_all("JavaScript", [](const TestCase& tc) {
+        write("test-json-schema-input.tmp", tc.schema);
+        tc.verify_status(std::system(
+            "node ./tests/run-json-schema-to-grammar.mjs test-json-schema-input.tmp > test-grammar-output.tmp") == 0 ? SUCCESS : FAILURE);
+        tc.verify(read("test-grammar-output.tmp"));
+    });
+
+    test_all("Check Expectations Validity", [](const TestCase& tc) {
+        if (tc.expected_status == SUCCESS) {
+            tc.verify_expectation_parseable();
+        }
+    });
 }

From df00efbba1f622a8377a39d7a140bf46d3c0cbb9 Mon Sep 17 00:00:00 2001
From: ochafik <ochafik@google.com>
Date: Wed, 20 Mar 2024 20:09:10 +0000
Subject: [PATCH 92/98] json: fix naming of top-level c++ function (+ drop
 unused one)

---
 common/json-schema-to-grammar.cpp  | 13 +++----------
 examples/json-schema-to-grammar.py |  5 -----
 2 files changed, 3 insertions(+), 15 deletions(-)

diff --git a/common/json-schema-to-grammar.cpp b/common/json-schema-to-grammar.cpp
index cca69cf5b8ef7..b718851c26dd4 100644
--- a/common/json-schema-to-grammar.cpp
+++ b/common/json-schema-to-grammar.cpp
@@ -125,7 +125,7 @@ static std::string replacePattern(const std::string& input, const regex& regex,
     return result;
 }
 
-static string _format_literal(const string& literal) {
+static string format_literal(const string& literal) {
     string escaped = replacePattern(json(literal).dump(), GRAMMAR_LITERAL_ESCAPE_RE, [&](const smatch& match) {
         char c = match.str()[0];
         return GRAMMAR_LITERAL_ESCAPES.at(c);
@@ -133,13 +133,6 @@ static string _format_literal(const string& literal) {
     return "\"" + escaped + "\"";
 }
 
-static string _format_range_char(const string& ch) {
-    return replacePattern(ch, GRAMMAR_RANGE_LITERAL_ESCAPE_RE, [&](const smatch& match) {
-        char c = match.str()[0];
-        return GRAMMAR_LITERAL_ESCAPES.at(c);
-    });
-}
-
 
 class SchemaConverter {
 private:
@@ -422,7 +415,7 @@ class SchemaConverter {
             string prop_rule_name = visit(prop_schema, name + (name.empty() ? "" : "-") + prop_name);
             prop_kv_rule_names[prop_name] = _add_rule(
                 name + (name.empty() ? "" : "-") + prop_name + "-kv",
-                _format_literal(prop_name) + " space \":\" space " + prop_rule_name
+                format_literal(prop_name) + " space \":\" space " + prop_rule_name
             );
             if (required.find(prop_name) != required.end()) {
                 required_props.push_back(prop_name);
@@ -570,7 +563,7 @@ class SchemaConverter {
             _errors.push_back("Only string constants are supported, got " + value.dump());
             return "";
         }
-        return _format_literal(value.get<string>());
+        return format_literal(value.get<string>());
     }
 
     string visit(const json& schema, const string& name) {
diff --git a/examples/json-schema-to-grammar.py b/examples/json-schema-to-grammar.py
index bf4ead215b478..9eead557f2644 100755
--- a/examples/json-schema-to-grammar.py
+++ b/examples/json-schema-to-grammar.py
@@ -65,11 +65,6 @@ def _format_literal(self, literal):
         )
         return f'"{escaped}"'
 
-    def _format_range_char(self, literal):
-        return GRAMMAR_RANGE_LITERAL_ESCAPE_RE.sub(
-            lambda m: GRAMMAR_LITERAL_ESCAPES.get(m.group(0)), json.dumps(literal)[1:-1]
-        )
-
     def _add_rule(self, name, rule):
         esc_name = INVALID_RULE_CHARS_RE.sub('-', name)
         if esc_name not in self._rules or self._rules[esc_name] == rule:

From d0600d91e996b3a158b2b9fb1272dffadabbd59b Mon Sep 17 00:00:00 2001
From: ochafik <ochafik@google.com>
Date: Wed, 20 Mar 2024 20:26:33 +0000
Subject: [PATCH 93/98] json: avoid using namespace std

---
 common/json-schema-to-grammar.cpp     | 235 +++++++++++++-------------
 tests/test-json-schema-to-grammar.cpp |  54 +++---
 2 files changed, 143 insertions(+), 146 deletions(-)

diff --git a/common/json-schema-to-grammar.cpp b/common/json-schema-to-grammar.cpp
index b718851c26dd4..e5481459fa0f0 100644
--- a/common/json-schema-to-grammar.cpp
+++ b/common/json-schema-to-grammar.cpp
@@ -11,11 +11,10 @@
 #include <vector>
 
 using json = nlohmann::json;
-using namespace std;
 
-const string SPACE_RULE = "\" \"?";
+const std::string SPACE_RULE = "\" \"?";
 
-unordered_map<string, string> PRIMITIVE_RULES = {
+std::unordered_map<std::string, std::string> PRIMITIVE_RULES = {
     {"boolean", "(\"true\" | \"false\") space"},
     {"number", "(\"-\"? ([0-9] | [1-9] [0-9]*)) (\".\" [0-9]+)? ([eE] [-+]? [0-9]+)? space"},
     {"integer", "(\"-\"? ([0-9] | [1-9] [0-9]*)) space"},
@@ -33,9 +32,9 @@ unordered_map<string, string> PRIMITIVE_RULES = {
                "      )* \"\\\"\" space"},
     {"null", "\"null\" space"}
 };
-vector<string> OBJECT_RULE_NAMES = {"object", "array", "string", "number", "boolean", "null", "value"};
+std::vector<std::string> OBJECT_RULE_NAMES = {"object", "array", "string", "number", "boolean", "null", "value"};
 
-unordered_map<string, string> DATE_RULES = {
+std::unordered_map<std::string, std::string> DATE_RULES = {
     {"date", "[0-9] [0-9] [0-9] [0-9] \"-\" ( \"0\" [1-9] | \"1\" [0-2] ) \"-\" ( \"0\" [1-9] | [1-2] [0-9] | \"3\" [0-1] )"},
     {"time", "([01] [0-9] | \"2\" [0-3]) \":\" [0-5] [0-9] \":\" [0-5] [0-9] ( \".\" [0-9] [0-9] [0-9] )? ( \"Z\" | ( \"+\" | \"-\" ) ( [01] [0-9] | \"2\" [0-3] ) \":\" [0-5] [0-9] )"},
     {"date-time", "date \"T\" time"},
@@ -44,7 +43,7 @@ unordered_map<string, string> DATE_RULES = {
     {"date-time-string", "\"\\\"\" date-time \"\\\"\" space"}
 };
 
-static bool is_reserved_name(const string& name) {
+static bool is_reserved_name(const std::string& name) {
     static std::unordered_set<std::string> RESERVED_NAMES;
     if (RESERVED_NAMES.empty()) {
         RESERVED_NAMES.insert("root");
@@ -54,19 +53,19 @@ static bool is_reserved_name(const string& name) {
     return RESERVED_NAMES.find(name) != RESERVED_NAMES.end();
 }
 
-regex INVALID_RULE_CHARS_RE("[^a-zA-Z0-9-]+");
-regex GRAMMAR_LITERAL_ESCAPE_RE("[\r\n\"]");
-regex GRAMMAR_RANGE_LITERAL_ESCAPE_RE("[\r\n\"\\]\\-\\\\]");
-unordered_map<char, string> GRAMMAR_LITERAL_ESCAPES = {
+std::regex INVALID_RULE_CHARS_RE("[^a-zA-Z0-9-]+");
+std::regex GRAMMAR_LITERAL_ESCAPE_RE("[\r\n\"]");
+std::regex GRAMMAR_RANGE_LITERAL_ESCAPE_RE("[\r\n\"\\]\\-\\\\]");
+std::unordered_map<char, std::string> GRAMMAR_LITERAL_ESCAPES = {
     {'\r', "\\r"}, {'\n', "\\n"}, {'"', "\\\""}, {'-', "\\-"}, {']', "\\]"}
 };
 
-unordered_set<char> NON_LITERAL_SET = {'|', '.', '(', ')', '[', ']', '{', '}', '*', '+', '?'};
-unordered_set<char> ESCAPED_IN_REGEXPS_BUT_NOT_IN_LITERALS = {'[', ']', '(', ')', '|', '{', '}', '*', '+', '?'};
+std::unordered_set<char> NON_LITERAL_SET = {'|', '.', '(', ')', '[', ']', '{', '}', '*', '+', '?'};
+std::unordered_set<char> ESCAPED_IN_REGEXPS_BUT_NOT_IN_LITERALS = {'[', ']', '(', ')', '|', '{', '}', '*', '+', '?'};
 
 template <typename Iterator>
-string join(Iterator begin, Iterator end, const string& separator) {
-    ostringstream result;
+std::string join(Iterator begin, Iterator end, const std::string& separator) {
+    std::ostringstream result;
     if (begin != end) {
         result << *begin;
         for (Iterator it = begin + 1; it != end; ++it) {
@@ -92,12 +91,12 @@ static std::vector<std::string> split(const std::string& str, const std::string&
     return tokens;
 }
 
-static string repeat(const string& str, size_t n) {
+static std::string repeat(const std::string& str, size_t n) {
     if (n == 0) {
         return "";
     }
 
-    string result;
+    std::string result;
     result.reserve(str.length() * n);
 
     for (size_t i = 0; i < n; ++i) {
@@ -107,7 +106,7 @@ static string repeat(const string& str, size_t n) {
     return result;
 }
 
-static std::string replacePattern(const std::string& input, const regex& regex, const function<string(const smatch &)>& replacement) {
+static std::string replacePattern(const std::string& input, const std::regex& regex, const std::function<std::string(const std::smatch &)>& replacement) {
     std::smatch match;
     std::string result;
 
@@ -125,8 +124,8 @@ static std::string replacePattern(const std::string& input, const regex& regex,
     return result;
 }
 
-static string format_literal(const string& literal) {
-    string escaped = replacePattern(json(literal).dump(), GRAMMAR_LITERAL_ESCAPE_RE, [&](const smatch& match) {
+static std::string format_literal(const std::string& literal) {
+    std::string escaped = replacePattern(json(literal).dump(), GRAMMAR_LITERAL_ESCAPE_RE, [&](const std::smatch& match) {
         char c = match.str()[0];
         return GRAMMAR_LITERAL_ESCAPES.at(c);
     });
@@ -136,50 +135,50 @@ static string format_literal(const string& literal) {
 
 class SchemaConverter {
 private:
-    std::function<json(const string&)> _fetch_json;
+    std::function<json(const std::string&)> _fetch_json;
     bool _dotall;
-    map<string, string> _rules;
-    unordered_map<string, nlohmann::json> _refs;
-    unordered_set<string> _refs_being_resolved;
-    vector<string> _errors;
-    vector<string> _warnings;
-
-    string _add_rule(const string& name, const string& rule) {
-        string esc_name = regex_replace(name, INVALID_RULE_CHARS_RE, "-");
+    std::map<std::string, std::string> _rules;
+    std::unordered_map<std::string, nlohmann::json> _refs;
+    std::unordered_set<std::string> _refs_being_resolved;
+    std::vector<std::string> _errors;
+    std::vector<std::string> _warnings;
+
+    std::string _add_rule(const std::string& name, const std::string& rule) {
+        std::string esc_name = regex_replace(name, INVALID_RULE_CHARS_RE, "-");
         if (_rules.find(esc_name) == _rules.end() || _rules[esc_name] == rule) {
             _rules[esc_name] = rule;
             return esc_name;
         } else {
             int i = 0;
-            while (_rules.find(esc_name + to_string(i)) != _rules.end() && _rules[esc_name + to_string(i)] != rule) {
+            while (_rules.find(esc_name + std::to_string(i)) != _rules.end() && _rules[esc_name + std::to_string(i)] != rule) {
                 i++;
             }
-            string key = esc_name + to_string(i);
+            std::string key = esc_name + std::to_string(i);
             _rules[key] = rule;
             return key;
         }
     }
 
-    string _generate_union_rule(const string& name, const vector<json>& alt_schemas) {
-        vector<string> rules;
+    std::string _generate_union_rule(const std::string& name, const std::vector<json>& alt_schemas) {
+        std::vector<std::string> rules;
         for (size_t i = 0; i < alt_schemas.size(); i++) {
-            rules.push_back(visit(alt_schemas[i], name + (name.empty() ? "alternative-" : "-") + to_string(i)));
+            rules.push_back(visit(alt_schemas[i], name + (name.empty() ? "alternative-" : "-") + std::to_string(i)));
         }
         return join(rules.begin(), rules.end(), " | ");
     }
 
-    string _visit_pattern(const string& pattern, const string& name) {
+    std::string _visit_pattern(const std::string& pattern, const std::string& name) {
         if (!(pattern.front() == '^' && pattern.back() == '$')) {
             _errors.push_back("Pattern must start with '^' and end with '$'");
             return "";
         }
-        string sub_pattern = pattern.substr(1, pattern.length() - 2);
-        unordered_map<string, string> sub_rule_ids;
+        std::string sub_pattern = pattern.substr(1, pattern.length() - 2);
+        std::unordered_map<std::string, std::string> sub_rule_ids;
 
         size_t i = 0;
         size_t length = sub_pattern.length();
 
-        using literal_or_rule = pair<string, bool>;
+        using literal_or_rule = std::pair<std::string, bool>;
         auto to_rule = [&](const literal_or_rule& ls) {
             auto is_literal = ls.second;
             auto s = ls.first;
@@ -187,10 +186,10 @@ class SchemaConverter {
         };
         std::function<literal_or_rule()> transform = [&]() -> literal_or_rule {
             size_t start = i;
-            vector<literal_or_rule> seq;
+            std::vector<literal_or_rule> seq;
 
             auto get_dot = [&]() {
-                string rule;
+                std::string rule;
                 if (_dotall) {
                     rule = "[\\U00000000-\\U0010FFFF]";
                 } else {
@@ -201,14 +200,14 @@ class SchemaConverter {
 
             // Joins the sequence, merging consecutive literals together.
             auto join_seq = [&]() {
-                vector<literal_or_rule> ret;
+                std::vector<literal_or_rule> ret;
 
-                string literal;
+                std::string literal;
                 auto flush_literal = [&]() {
                     if (literal.empty()) {
                         return false;
                     }
-                    ret.push_back(make_pair(literal, true));
+                    ret.push_back(std::make_pair(literal, true));
                     literal.clear();
                     return true;
                 };
@@ -224,17 +223,17 @@ class SchemaConverter {
                 }
                 flush_literal();
 
-                vector<string> results;
+                std::vector<std::string> results;
                 for (const auto& item : ret) {
                     results.push_back(to_rule(item));
                 }
-                return make_pair(join(results.begin(), results.end(), " "), false);
+                return std::make_pair(join(results.begin(), results.end(), " "), false);
             };
 
             while (i < length) {
                 char c = sub_pattern[i];
                 if (c == '.') {
-                    seq.push_back(make_pair(get_dot(), false));
+                    seq.push_back(std::make_pair(get_dot(), false));
                     i++;
                 } else if (c == '(') {
                     i++;
@@ -243,7 +242,7 @@ class SchemaConverter {
                             _warnings.push_back("Unsupported pattern syntax");
                         }
                     }
-                    seq.push_back(make_pair("(" + to_rule(transform()) + ")", false));
+                    seq.push_back(std::make_pair("(" + to_rule(transform()) + ")", false));
                 } else if (c == ')') {
                     i++;
                     if (start > 0 && sub_pattern[start - 1] != '(') {
@@ -251,7 +250,7 @@ class SchemaConverter {
                     }
                     return join_seq();
                 } else if (c == '[') {
-                    string square_brackets = string(1, c);
+                    std::string square_brackets = std::string(1, c);
                     i++;
                     while (i < length && sub_pattern[i] != ']') {
                         if (sub_pattern[i] == '\\') {
@@ -267,15 +266,15 @@ class SchemaConverter {
                     }
                     square_brackets += ']';
                     i++;
-                    seq.push_back(make_pair(square_brackets, false));
+                    seq.push_back(std::make_pair(square_brackets, false));
                 } else if (c == '|') {
-                    seq.push_back(make_pair("|", false));
+                    seq.push_back(std::make_pair("|", false));
                     i++;
                 } else if (c == '*' || c == '+' || c == '?') {
-                    seq.back() = make_pair(to_rule(seq.back()) + c, false);
+                    seq.back() = std::make_pair(to_rule(seq.back()) + c, false);
                     i++;
                 } else if (c == '{') {
-                    string curly_brackets = string(1, c);
+                    std::string curly_brackets = std::string(1, c);
                     i++;
                     while (i < length && sub_pattern[i] != '}') {
                         curly_brackets += sub_pattern[i];
@@ -288,7 +287,7 @@ class SchemaConverter {
                     i++;
                     auto nums = split(curly_brackets.substr(1, curly_brackets.length() - 2), ",");
                     int min_times = 0;
-                    int max_times = numeric_limits<int>::max();
+                    int max_times = std::numeric_limits<int>::max();
                     try {
                         if (nums.size() == 1) {
                             min_times = max_times = std::stoi(nums[0]);
@@ -304,27 +303,27 @@ class SchemaConverter {
                         }
                     } catch (const std::invalid_argument& e) {
                         _errors.push_back("Invalid number in curly brackets");
-                        return make_pair("", false);
+                        return std::make_pair("", false);
                     }
                     auto &last = seq.back();
                     auto &sub = last.first;
                     auto sub_is_literal = last.second;
 
-                    if (min_times == 0 && max_times == numeric_limits<int>::max()) {
+                    if (min_times == 0 && max_times == std::numeric_limits<int>::max()) {
                         sub += "*";
                     } else if (min_times == 0 && max_times == 1) {
                         sub += "?";
-                    } else if (min_times == 1 && max_times == numeric_limits<int>::max()) {
+                    } else if (min_times == 1 && max_times == std::numeric_limits<int>::max()) {
                         sub += "+";
                     } else {
                         if (!sub_is_literal) {
-                            string& sub_id = sub_rule_ids[sub];
+                            std::string& sub_id = sub_rule_ids[sub];
                             if (sub_id.empty()) {
-                                sub_id = _add_rule(name + "-" + to_string(sub_rule_ids.size()), sub);
+                                sub_id = _add_rule(name + "-" + std::to_string(sub_rule_ids.size()), sub);
                             }
                             sub = sub_id;
                         }
-                        string result;
+                        std::string result;
                         if (sub_is_literal && min_times > 0) {
                             result = "\"" + repeat(sub.substr(1, sub.length() - 2), min_times) + "\"";
                         } else {
@@ -338,7 +337,7 @@ class SchemaConverter {
                         if (min_times > 0 && min_times < max_times) {
                             result += " ";
                         }
-                        if (max_times == numeric_limits<int>::max()) {
+                        if (max_times == std::numeric_limits<int>::max()) {
                             result += sub + "*";
                         } else {
                             for (int j = min_times; j < max_times; j++) {
@@ -352,7 +351,7 @@ class SchemaConverter {
                         seq.back().second = false;
                     }
                 } else {
-                    string literal;
+                    std::string literal;
                     auto is_non_literal = [&](char c) {
                         return NON_LITERAL_SET.find(c) != NON_LITERAL_SET.end();
                     };
@@ -379,7 +378,7 @@ class SchemaConverter {
                         }
                     }
                     if (!literal.empty()) {
-                        seq.push_back(make_pair(literal, true));
+                        seq.push_back(std::make_pair(literal, true));
                     }
                 }
             }
@@ -388,8 +387,8 @@ class SchemaConverter {
         return _add_rule(name, "\"\\\"\" " + to_rule(transform()) + " \"\\\"\" space");
     }
 
-    string _resolve_ref(const string& ref) {
-        string ref_name = ref.substr(ref.find_last_of('/') + 1);
+    std::string _resolve_ref(const std::string& ref) {
+        std::string ref_name = ref.substr(ref.find_last_of('/') + 1);
         if (_rules.find(ref_name) == _rules.end() && _refs_being_resolved.find(ref) == _refs_being_resolved.end()) {
             _refs_being_resolved.insert(ref);
             json resolved = _refs[ref];
@@ -399,20 +398,20 @@ class SchemaConverter {
         return ref_name;
     }
 
-    string _build_object_rule(
-        const vector<pair<string, json>>& properties,
-        const unordered_set<string>& required,
-        const string& name,
+    std::string _build_object_rule(
+        const std::vector<std::pair<std::string, json>>& properties,
+        const std::unordered_set<std::string>& required,
+        const std::string& name,
         const json& additional_properties)
     {
-        vector<string> required_props;
-        vector<string> optional_props;
-        unordered_map<string, string> prop_kv_rule_names;
+        std::vector<std::string> required_props;
+        std::vector<std::string> optional_props;
+        std::unordered_map<std::string, std::string> prop_kv_rule_names;
         for (const auto& kv : properties) {
             const auto &prop_name = kv.first;
             const auto &prop_schema = kv.second;
 
-            string prop_rule_name = visit(prop_schema, name + (name.empty() ? "" : "-") + prop_name);
+            std::string prop_rule_name = visit(prop_schema, name + (name.empty() ? "" : "-") + prop_name);
             prop_kv_rule_names[prop_name] = _add_rule(
                 name + (name.empty() ? "" : "-") + prop_name + "-kv",
                 format_literal(prop_name) + " space \":\" space " + prop_rule_name
@@ -424,14 +423,14 @@ class SchemaConverter {
             }
         }
         if (additional_properties.is_object() || (additional_properties.is_boolean() && additional_properties.get<bool>())) {
-            string sub_name = name + (name.empty() ? "" : "-") + "additional";
-            string value_rule = visit(additional_properties.is_object() ? additional_properties : json::object(), sub_name + "-value");
-            string kv_rule = _add_rule(sub_name + "-kv", _add_rule("string", PRIMITIVE_RULES.at("string")) + " \":\" space " + value_rule);
+            std::string sub_name = name + (name.empty() ? "" : "-") + "additional";
+            std::string value_rule = visit(additional_properties.is_object() ? additional_properties : json::object(), sub_name + "-value");
+            std::string kv_rule = _add_rule(sub_name + "-kv", _add_rule("string", PRIMITIVE_RULES.at("string")) + " \":\" space " + value_rule);
             prop_kv_rule_names["*"] = kv_rule;
             optional_props.push_back("*");
         }
 
-        string rule = "\"{\" space ";
+        std::string rule = "\"{\" space ";
         for (size_t i = 0; i < required_props.size(); i++) {
             if (i > 0) {
                 rule += " \",\" space ";
@@ -445,13 +444,13 @@ class SchemaConverter {
                 rule += " \",\" space ( ";
             }
 
-            function<string(const vector<string>&, bool)> get_recursive_refs = [&](const vector<string>& ks, bool first_is_optional) {
-                string res;
+            std::function<std::string(const std::vector<std::string>&, bool)> get_recursive_refs = [&](const std::vector<std::string>& ks, bool first_is_optional) {
+                std::string res;
                 if (ks.empty()) {
                     return res;
                 }
-                string k = ks[0];
-                string kv_rule_name = prop_kv_rule_names[k];
+                std::string k = ks[0];
+                std::string kv_rule_name = prop_kv_rule_names[k];
                 if (k == "*") {
                     res = _add_rule(
                         name + (name.empty() ? "" : "-") + "additional-kvs",
@@ -465,7 +464,7 @@ class SchemaConverter {
                 if (ks.size() > 1) {
                     res += " " + _add_rule(
                         name + (name.empty() ? "" : "-") + k + "-rest",
-                        get_recursive_refs(vector<string>(ks.begin() + 1, ks.end()), true)
+                        get_recursive_refs(std::vector<std::string>(ks.begin() + 1, ks.end()), true)
                     );
                 }
                 return res;
@@ -475,7 +474,7 @@ class SchemaConverter {
                 if (i > 0) {
                     rule += " | ";
                 }
-                rule += get_recursive_refs(vector<string>(optional_props.begin() + i, optional_props.end()), false);
+                rule += get_recursive_refs(std::vector<std::string>(optional_props.begin() + i, optional_props.end()), false);
             }
             if (!required_props.empty()) {
                 rule += " )";
@@ -490,7 +489,7 @@ class SchemaConverter {
 
 public:
     SchemaConverter(
-        const std::function<json(const string&)>& fetch_json,
+        const std::function<json(const std::string&)>& fetch_json,
         bool dotall)
           : _fetch_json(fetch_json), _dotall(dotall)
     {
@@ -503,18 +502,18 @@ class SchemaConverter {
         * replacing each $ref with absolute reference URL and populates _refs with the
         * respective referenced (sub)schema dictionaries.
         */
-        function<void(json&)> visit_refs = [&](json& n) {
+        std::function<void(json&)> visit_refs = [&](json& n) {
             if (n.is_array()) {
                 for (auto& x : n) {
                     visit_refs(x);
                 }
             } else if (n.is_object()) {
                 if (n.contains("$ref")) {
-                    string ref = n["$ref"];
+                    std::string ref = n["$ref"];
                     if (_refs.find(ref) == _refs.end()) {
                         json target;
                         if (ref.find("https://") == 0) {
-                            string base_url = ref.substr(0, ref.find('#'));
+                            std::string base_url = ref.substr(0, ref.find('#'));
                             auto it = _refs.find(base_url);
                             if (it != _refs.end()) {
                                 target = it->second;
@@ -524,7 +523,7 @@ class SchemaConverter {
                                 resolve_refs(referenced, base_url);
                                 _refs[base_url] = referenced;
                             }
-                            if (ref.find('#') == string::npos || ref.substr(ref.find('#') + 1).empty()) {
+                            if (ref.find('#') == std::string::npos || ref.substr(ref.find('#') + 1).empty()) {
                                 return;
                             }
                         } else if (ref.find("#/") == 0) {
@@ -535,10 +534,10 @@ class SchemaConverter {
                             _errors.push_back("Unsupported ref: " + ref);
                             return;
                         }
-                        string pointer = ref.substr(ref.find('#') + 1);
-                        vector<string> tokens = split(pointer, "/");
+                        std::string pointer = ref.substr(ref.find('#') + 1);
+                        std::vector<std::string> tokens = split(pointer, "/");
                         for (size_t i = 1; i < tokens.size(); ++i) {
-                            string sel = tokens[i];
+                            std::string sel = tokens[i];
                             if (target.is_null() || !target.contains(sel)) {
                                 _errors.push_back("Error resolving ref " + ref + ": " + sel + " not in " + target.dump());
                                 return;
@@ -558,26 +557,26 @@ class SchemaConverter {
         visit_refs(schema);
     }
 
-    string _generate_constant_rule(const json& value) {
+    std::string _generate_constant_rule(const json& value) {
         if (!value.is_string()) {
-            _errors.push_back("Only string constants are supported, got " + value.dump());
+            _errors.push_back("Only std::string constants are supported, got " + value.dump());
             return "";
         }
-        return format_literal(value.get<string>());
+        return format_literal(value.get<std::string>());
     }
 
-    string visit(const json& schema, const string& name) {
+    std::string visit(const json& schema, const std::string& name) {
         json schema_type = schema.contains("type") ? schema["type"] : json();
-        string schema_format = schema.contains("format") ? schema["format"].get<string>() : "";
-        string rule_name = is_reserved_name(name) ? name + "-" : name.empty() ? "root" : name;
+        std::string schema_format = schema.contains("format") ? schema["format"].get<std::string>() : "";
+        std::string rule_name = is_reserved_name(name) ? name + "-" : name.empty() ? "root" : name;
 
         if (schema.contains("$ref")) {
             return _add_rule(rule_name, _resolve_ref(schema["$ref"]));
         } else if (schema.contains("oneOf") || schema.contains("anyOf")) {
-            vector<json> alt_schemas = schema.contains("oneOf") ? schema["oneOf"].get<vector<json>>() : schema["anyOf"].get<vector<json>>();
+            std::vector<json> alt_schemas = schema.contains("oneOf") ? schema["oneOf"].get<std::vector<json>>() : schema["anyOf"].get<std::vector<json>>();
             return _add_rule(rule_name, _generate_union_rule(name, alt_schemas));
         } else if (schema_type.is_array()) {
-            vector<json> schema_types;
+            std::vector<json> schema_types;
             for (const auto& t : schema_type) {
                 schema_types.push_back({{"type", t}});
             }
@@ -585,7 +584,7 @@ class SchemaConverter {
         } else if (schema.contains("const")) {
             return _add_rule(rule_name, _generate_constant_rule(schema["const"]));
         } else if (schema.contains("enum")) {
-            vector<string> enum_values;
+            std::vector<std::string> enum_values;
             for (const auto& v : schema["enum"]) {
                 enum_values.push_back(_generate_constant_rule(v));
             }
@@ -593,15 +592,15 @@ class SchemaConverter {
         } else if ((schema_type.is_null() || schema_type == "object")
                 && (schema.contains("properties") ||
                     (schema.contains("additionalProperties") && schema["additionalProperties"] != true))) {
-            unordered_set<string> required;
+            std::unordered_set<std::string> required;
             if (schema.contains("required") && schema["required"].is_array()) {
                 for (const auto& item : schema["required"]) {
                     if (item.is_string()) {
-                        required.insert(item.get<string>());
+                        required.insert(item.get<std::string>());
                     }
                 }
             }
-            vector<pair<string, json>> properties;
+            std::vector<std::pair<std::string, json>> properties;
             if (schema.contains("properties")) {
                 for (const auto& prop : schema["properties"].items()) {
                     properties.emplace_back(prop.key(), prop.value());
@@ -612,9 +611,9 @@ class SchemaConverter {
                     properties, required, name,
                     schema.contains("additionalProperties") ? schema["additionalProperties"] : json()));
         } else if ((schema_type.is_null() || schema_type == "object") && schema.contains("allOf")) {
-            unordered_set<string> required;
-            vector<pair<string, json>> properties;
-            string hybrid_name = name;
+            std::unordered_set<std::string> required;
+            std::vector<std::pair<std::string, json>> properties;
+            std::string hybrid_name = name;
             std::function<void(const json&, bool)> add_component = [&](const json& comp_schema, bool is_required) {
                 if (comp_schema.contains("$ref")) {
                     add_component(_refs[comp_schema["$ref"]], is_required);
@@ -642,19 +641,19 @@ class SchemaConverter {
         } else if ((schema_type.is_null() || schema_type == "array") && (schema.contains("items") || schema.contains("prefixItems"))) {
             json items = schema.contains("items") ? schema["items"] : schema["prefixItems"];
             if (items.is_array()) {
-                string rule = "\"[\" space ";
+                std::string rule = "\"[\" space ";
                 for (size_t i = 0; i < items.size(); i++) {
                     if (i > 0) {
                         rule += " \",\" space ";
                     }
-                    rule += visit(items[i], name + (name.empty() ? "" : "-") + "tuple-" + to_string(i));
+                    rule += visit(items[i], name + (name.empty() ? "" : "-") + "tuple-" + std::to_string(i));
                 }
                 rule += " \"]\" space";
                 return _add_rule(rule_name, rule);
             } else {
-                string item_rule_name = visit(items, name + (name.empty() ? "" : "-") + "item");
-                string list_item_operator = "( \",\" space " + item_rule_name + " )";
-                string successive_items;
+                std::string item_rule_name = visit(items, name + (name.empty() ? "" : "-") + "item");
+                std::string list_item_operator = "( \",\" space " + item_rule_name + " )";
+                std::string successive_items;
                 int min_items = schema.contains("minItems") ? schema["minItems"].get<int>() : 0;
                 json max_items_json = schema.contains("maxItems") ? schema["maxItems"] : json();
                 int max_items = max_items_json.is_number_integer() ? max_items_json.get<int>() : -1;
@@ -667,7 +666,7 @@ class SchemaConverter {
                 } else {
                     successive_items += list_item_operator + "*";
                 }
-                string rule;
+                std::string rule;
                 if (min_items == 0) {
                     rule =  "\"[\" space ( " + item_rule_name + " " + successive_items + " )? \"]\" space";
                 } else {
@@ -677,7 +676,7 @@ class SchemaConverter {
             }
         } else if ((schema_type.is_null() || schema_type == "string") && schema.contains("pattern")) {
             return _visit_pattern(schema["pattern"], rule_name);
-        } else if ((schema_type.is_null() || schema_type == "string") && regex_match(schema_format, regex("^uuid[1-5]?$"))) {
+        } else if ((schema_type.is_null() || schema_type == "string") && std::regex_match(schema_format, std::regex("^uuid[1-5]?$"))) {
             return _add_rule(rule_name == "root" ? "root" : schema_format, PRIMITIVE_RULES.at("uuid"));
         } else if ((schema_type.is_null() || schema_type == "string") && DATE_RULES.find(schema_format) != DATE_RULES.end()) {
             for (const auto& kv : DATE_RULES) {
@@ -690,12 +689,12 @@ class SchemaConverter {
             }
             return _add_rule(rule_name, "object");
         } else {
-            if (!schema_type.is_string() || PRIMITIVE_RULES.find(schema_type.get<string>()) == PRIMITIVE_RULES.end()) {
+            if (!schema_type.is_string() || PRIMITIVE_RULES.find(schema_type.get<std::string>()) == PRIMITIVE_RULES.end()) {
                 _errors.push_back("Unrecognized schema: " + schema.dump());
                 return "";
             }
             // TODO: support minimum, maximum, exclusiveMinimum, exclusiveMaximum at least for zero
-            return _add_rule(rule_name == "root" ? "root" : schema_type.get<string>(), PRIMITIVE_RULES.at(schema_type.get<string>()));
+            return _add_rule(rule_name == "root" ? "root" : schema_type.get<std::string>(), PRIMITIVE_RULES.at(schema_type.get<std::string>()));
         }
     }
 
@@ -708,17 +707,17 @@ class SchemaConverter {
         }
     }
 
-    string format_grammar() {
-        stringstream ss;
+    std::string format_grammar() {
+        std::stringstream ss;
         for (const auto& kv : _rules) {
-            ss << kv.first << " ::= " << kv.second << endl;
+            ss << kv.first << " ::= " << kv.second << std::endl;
         }
         return ss.str();
     }
 };
 
-string json_schema_to_grammar(const json& schema) {
-    SchemaConverter converter([](const string&) { return json::object(); }, /* dotall= */ false);
+std::string json_schema_to_grammar(const json& schema) {
+    SchemaConverter converter([](const std::string&) { return json::object(); }, /* dotall= */ false);
     auto copy = schema;
     converter.resolve_refs(copy, "input");
     converter.visit(copy, "");
diff --git a/tests/test-json-schema-to-grammar.cpp b/tests/test-json-schema-to-grammar.cpp
index 2637bf8d211ac..01dc3c59d9dca 100755
--- a/tests/test-json-schema-to-grammar.cpp
+++ b/tests/test-json-schema-to-grammar.cpp
@@ -10,13 +10,11 @@
 #include "json-schema-to-grammar.h"
 #include "grammar-parser.h"
 
-using namespace std;
-
 static std::string trim(const std::string & source) {
     std::string s(source);
     s.erase(0,s.find_first_not_of(" \n\r\t"));
     s.erase(s.find_last_not_of(" \n\r\t")+1);
-    return regex_replace(s, regex("(^|\n)[ \t]+"), "$1");
+    return std::regex_replace(s, std::regex("(^|\n)[ \t]+"), "$1");
 }
 
 enum TestCaseStatus {
@@ -26,21 +24,21 @@ enum TestCaseStatus {
 
 struct TestCase {
     TestCaseStatus expected_status;
-    string name;
-    string schema;
-    string expected_grammar;
+    std::string name;
+    std::string schema;
+    std::string expected_grammar;
 
     void _print_failure_header() const {
-        cerr << "#" << endl;
-        cerr << "# Test '" << name.c_str() << "' failed." << endl;
-        cerr << "#" << endl;
-        cerr << schema.c_str() << endl;
+        std::cerr << "#" << std::endl;
+        std::cerr << "# Test '" << name.c_str() << "' failed." << std::endl;
+        std::cerr << "#" << std::endl;
+        std::cerr << schema.c_str() << std::endl;
     }
-    void verify(const string& actual_grammar) const {
+    void verify(const std::string& actual_grammar) const {
         if (trim(actual_grammar) != trim(expected_grammar)) {
         _print_failure_header();
-        cerr << "# EXPECTED:\n" << expected_grammar.c_str() << endl;
-        cerr << "# ACTUAL:\n" << actual_grammar.c_str() << endl;
+        std::cerr << "# EXPECTED:\n" << expected_grammar.c_str() << std::endl;
+        std::cerr << "# ACTUAL:\n" << actual_grammar.c_str() << std::endl;
         assert(false);
         }
     }
@@ -48,41 +46,41 @@ struct TestCase {
         try {
             auto state = grammar_parser::parse(expected_grammar.c_str());
             if (state.symbol_ids.find("root") == state.symbol_ids.end()) {
-                throw runtime_error("Grammar failed to parse:\n" + expected_grammar);
+                throw std::runtime_error("Grammar failed to parse:\n" + expected_grammar);
             }
-        } catch (const runtime_error& ex) {
+        } catch (const std::runtime_error& ex) {
             _print_failure_header();
-            cerr << "# GRAMMAR ERROR: " << ex.what() << endl;
+            std::cerr << "# GRAMMAR ERROR: " << ex.what() << std::endl;
             assert(false);
         }
     }
     void verify_status(TestCaseStatus status) const {
         if (status != expected_status) {
             _print_failure_header();
-            cerr << "# EXPECTED STATUS: " << (expected_status == SUCCESS ? "SUCCESS" : "FAILURE") << endl;
-            cerr << "# ACTUAL STATUS: " << (status == SUCCESS ? "SUCCESS" : "FAILURE") << endl;
+            std::cerr << "# EXPECTED STATUS: " << (expected_status == SUCCESS ? "SUCCESS" : "FAILURE") << std::endl;
+            std::cerr << "# ACTUAL STATUS: " << (status == SUCCESS ? "SUCCESS" : "FAILURE") << std::endl;
             assert(false);
         }
     }
 };
 
-static void write(const string& file, const string& content) {
-    ofstream f;
+static void write(const std::string& file, const std::string& content) {
+    std::ofstream f;
     f.open(file.c_str());
     f << content.c_str();
     f.close();
 }
 
-static string read(const string& file) {
-    ostringstream actuals;
-    actuals << ifstream(file.c_str()).rdbuf();
+static std::string read(const std::string& file) {
+    std::ostringstream actuals;
+    actuals << std::ifstream(file.c_str()).rdbuf();
     return actuals.str();
 }
 
-static void test_all(const string& lang, std::function<void(const TestCase&)> runner) {
-    cerr << "#\n# Testing JSON schema conversion (" << lang.c_str() << ")\n#" << endl;
+static void test_all(const std::string& lang, std::function<void(const TestCase&)> runner) {
+    std::cerr << "#\n# Testing JSON schema conversion (" << lang.c_str() << ")\n#" << std::endl;
     auto test = [&](const TestCase& tc) {
-        cerr << "- " << tc.name.c_str() << (tc.expected_status == FAILURE ? " (failure expected)" : "") << endl;
+        std::cerr << "- " << tc.name.c_str() << (tc.expected_status == FAILURE ? " (failure expected)" : "") << std::endl;
         runner(tc);
     };
 
@@ -805,8 +803,8 @@ int main() {
         try {
             tc.verify(json_schema_to_grammar(nlohmann::json::parse(tc.schema)));
             tc.verify_status(SUCCESS);
-        } catch (const runtime_error& ex) {
-            cerr << "Error: " << ex.what() << endl;
+        } catch (const std::runtime_error& ex) {
+            std::cerr << "Error: " << ex.what() << std::endl;
             tc.verify_status(FAILURE);
         }
     });

From 92603503847e99c38070606131e829a6439e783f Mon Sep 17 00:00:00 2001
From: ochafik <ochafik@google.com>
Date: Wed, 20 Mar 2024 22:03:58 +0000
Subject: [PATCH 94/98] json: fix zig build

---
 build.zig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/build.zig b/build.zig
index b60a003c37d5d..a1de7083a07a8 100644
--- a/build.zig
+++ b/build.zig
@@ -122,7 +122,7 @@ pub fn build(b: *std.build.Builder) !void {
     const console = make.obj("console", "common/console.cpp");
     const sampling = make.obj("sampling", "common/sampling.cpp");
     const grammar_parser = make.obj("grammar-parser", "common/grammar-parser.cpp");
-    const json_schema_to_grammar = make.obj("json-schema-to-grammar", "examples/server/json-schema-to-grammar.cpp");
+    const json_schema_to_grammar = make.obj("json-schema-to-grammar", "common/json-schema-to-grammar.cpp");
     const train = make.obj("train", "common/train.cpp");
     const clip = make.obj("clip", "examples/llava/clip.cpp");
     const llava = make.obj("llava", "examples/llava/llava.cpp");

From b8c0025c6d1a80cfda353711693182cbc4b99515 Mon Sep 17 00:00:00 2001
From: ochafik <ochafik@google.com>
Date: Wed, 20 Mar 2024 22:12:06 +0000
Subject: [PATCH 95/98] Update server.feature

---
 examples/server/tests/features/server.feature | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/examples/server/tests/features/server.feature b/examples/server/tests/features/server.feature
index 62764473ffaaf..a2e0e5b3532b5 100644
--- a/examples/server/tests/features/server.feature
+++ b/examples/server/tests/features/server.feature
@@ -83,7 +83,7 @@ Feature: llama.cpp server
       | response_format                                                     | n_predicted | re_content             |
       | {"type": "json_object", "schema": {"const": "42"}}                  | 5           | "42"                   |
       | {"type": "json_object", "schema": {"items": [{"type": "integer"}]}} | 10          | \[ -300 \]             |
-      | {"type": "json_object"}                                             | 10          | \{ " said the other an |
+      | {"type": "json_object"}                                             | 10          | \{ " Jacky.            |
 
 
   Scenario: Tokenize / Detokenize

From ad6c4755e03023ac17ebea6c2f8132d5952a02ae Mon Sep 17 00:00:00 2001
From: ochafik <ochafik@google.com>
Date: Thu, 21 Mar 2024 10:03:51 +0000
Subject: [PATCH 96/98] json: iostream -> fprintf

---
 common/json-schema-to-grammar.cpp     |  3 +--
 tests/test-json-schema-to-grammar.cpp | 21 ++++++++-------------
 2 files changed, 9 insertions(+), 15 deletions(-)

diff --git a/common/json-schema-to-grammar.cpp b/common/json-schema-to-grammar.cpp
index e5481459fa0f0..dd1ffee8055e9 100644
--- a/common/json-schema-to-grammar.cpp
+++ b/common/json-schema-to-grammar.cpp
@@ -1,7 +1,6 @@
 #include "json-schema-to-grammar.h"
 #include <algorithm>
 #include <fstream>
-#include <iostream>
 #include <map>
 #include <regex>
 #include <sstream>
@@ -703,7 +702,7 @@ class SchemaConverter {
             throw std::runtime_error("JSON schema conversion failed:\n" + join(_errors.begin(), _errors.end(), "\n"));
         }
         if (!_warnings.empty()) {
-            std::cerr << "WARNING: JSON schema conversion was incomplete: " + join(_warnings.begin(), _warnings.end(), "; ") << std::endl;
+            fprintf(stderr, "WARNING: JSON schema conversion was incomplete: %s\n", join(_warnings.begin(), _warnings.end(), "; ").c_str());
         }
     }
 
diff --git a/tests/test-json-schema-to-grammar.cpp b/tests/test-json-schema-to-grammar.cpp
index 01dc3c59d9dca..2790a628b449f 100755
--- a/tests/test-json-schema-to-grammar.cpp
+++ b/tests/test-json-schema-to-grammar.cpp
@@ -2,7 +2,6 @@
 #undef NDEBUG
 #endif
 
-#include <iostream>
 #include <fstream>
 #include <sstream>
 #include <regex>
@@ -29,16 +28,12 @@ struct TestCase {
     std::string expected_grammar;
 
     void _print_failure_header() const {
-        std::cerr << "#" << std::endl;
-        std::cerr << "# Test '" << name.c_str() << "' failed." << std::endl;
-        std::cerr << "#" << std::endl;
-        std::cerr << schema.c_str() << std::endl;
+        fprintf(stderr, "#\n# Test '%s' failed.\n#\n%s\n", name.c_str(), schema.c_str());
     }
     void verify(const std::string& actual_grammar) const {
         if (trim(actual_grammar) != trim(expected_grammar)) {
         _print_failure_header();
-        std::cerr << "# EXPECTED:\n" << expected_grammar.c_str() << std::endl;
-        std::cerr << "# ACTUAL:\n" << actual_grammar.c_str() << std::endl;
+        fprintf(stderr, "# EXPECTED:\n%s\n# ACTUAL:\n%s\n", expected_grammar.c_str(), actual_grammar.c_str());
         assert(false);
         }
     }
@@ -50,15 +45,15 @@ struct TestCase {
             }
         } catch (const std::runtime_error& ex) {
             _print_failure_header();
-            std::cerr << "# GRAMMAR ERROR: " << ex.what() << std::endl;
+            fprintf(stderr, "# GRAMMAR ERROR: %s\n", ex.what());
             assert(false);
         }
     }
     void verify_status(TestCaseStatus status) const {
         if (status != expected_status) {
             _print_failure_header();
-            std::cerr << "# EXPECTED STATUS: " << (expected_status == SUCCESS ? "SUCCESS" : "FAILURE") << std::endl;
-            std::cerr << "# ACTUAL STATUS: " << (status == SUCCESS ? "SUCCESS" : "FAILURE") << std::endl;
+            fprintf(stderr, "# EXPECTED STATUS: %s\n", expected_status == SUCCESS ? "SUCCESS" : "FAILURE");
+            fprintf(stderr, "# ACTUAL STATUS: %s\n", status == SUCCESS ? "SUCCESS" : "FAILURE");
             assert(false);
         }
     }
@@ -78,9 +73,9 @@ static std::string read(const std::string& file) {
 }
 
 static void test_all(const std::string& lang, std::function<void(const TestCase&)> runner) {
-    std::cerr << "#\n# Testing JSON schema conversion (" << lang.c_str() << ")\n#" << std::endl;
+    fprintf(stderr, "#\n# Testing JSON schema conversion (%s)\n#\n", lang.c_str());
     auto test = [&](const TestCase& tc) {
-        std::cerr << "- " << tc.name.c_str() << (tc.expected_status == FAILURE ? " (failure expected)" : "") << std::endl;
+        fprintf(stderr, "- %s%s\n", tc.name.c_str(), tc.expected_status == FAILURE ? " (failure expected)" : "");
         runner(tc);
     };
 
@@ -804,7 +799,7 @@ int main() {
             tc.verify(json_schema_to_grammar(nlohmann::json::parse(tc.schema)));
             tc.verify_status(SUCCESS);
         } catch (const std::runtime_error& ex) {
-            std::cerr << "Error: " << ex.what() << std::endl;
+            fprintf(stderr, "Error: %s\n", ex.what());
             tc.verify_status(FAILURE);
         }
     });

From c26e7b87cec0a3da64ae6bbe4a90f72ca30a3aa7 Mon Sep 17 00:00:00 2001
From: ochafik <ochafik@google.com>
Date: Thu, 21 Mar 2024 10:07:47 +0000
Subject: [PATCH 97/98] json: space before & refs for consistency

---
 common/json-schema-to-grammar.cpp     | 86 +++++++++++++--------------
 tests/test-json-schema-to-grammar.cpp | 22 +++----
 2 files changed, 54 insertions(+), 54 deletions(-)

diff --git a/common/json-schema-to-grammar.cpp b/common/json-schema-to-grammar.cpp
index dd1ffee8055e9..90855b47e7576 100644
--- a/common/json-schema-to-grammar.cpp
+++ b/common/json-schema-to-grammar.cpp
@@ -42,7 +42,7 @@ std::unordered_map<std::string, std::string> DATE_RULES = {
     {"date-time-string", "\"\\\"\" date-time \"\\\"\" space"}
 };
 
-static bool is_reserved_name(const std::string& name) {
+static bool is_reserved_name(const std::string & name) {
     static std::unordered_set<std::string> RESERVED_NAMES;
     if (RESERVED_NAMES.empty()) {
         RESERVED_NAMES.insert("root");
@@ -63,7 +63,7 @@ std::unordered_set<char> NON_LITERAL_SET = {'|', '.', '(', ')', '[', ']', '{', '
 std::unordered_set<char> ESCAPED_IN_REGEXPS_BUT_NOT_IN_LITERALS = {'[', ']', '(', ')', '|', '{', '}', '*', '+', '?'};
 
 template <typename Iterator>
-std::string join(Iterator begin, Iterator end, const std::string& separator) {
+std::string join(Iterator begin, Iterator end, const std::string & separator) {
     std::ostringstream result;
     if (begin != end) {
         result << *begin;
@@ -74,7 +74,7 @@ std::string join(Iterator begin, Iterator end, const std::string& separator) {
     return result.str();
 }
 
-static std::vector<std::string> split(const std::string& str, const std::string& delimiter) {
+static std::vector<std::string> split(const std::string & str, const std::string & delimiter) {
     std::vector<std::string> tokens;
     size_t start = 0;
     size_t end = str.find(delimiter);
@@ -90,7 +90,7 @@ static std::vector<std::string> split(const std::string& str, const std::string&
     return tokens;
 }
 
-static std::string repeat(const std::string& str, size_t n) {
+static std::string repeat(const std::string & str, size_t n) {
     if (n == 0) {
         return "";
     }
@@ -105,7 +105,7 @@ static std::string repeat(const std::string& str, size_t n) {
     return result;
 }
 
-static std::string replacePattern(const std::string& input, const std::regex& regex, const std::function<std::string(const std::smatch &)>& replacement) {
+static std::string replacePattern(const std::string & input, const std::regex & regex, const std::function<std::string(const std::smatch  &)> & replacement) {
     std::smatch match;
     std::string result;
 
@@ -123,8 +123,8 @@ static std::string replacePattern(const std::string& input, const std::regex& re
     return result;
 }
 
-static std::string format_literal(const std::string& literal) {
-    std::string escaped = replacePattern(json(literal).dump(), GRAMMAR_LITERAL_ESCAPE_RE, [&](const std::smatch& match) {
+static std::string format_literal(const std::string & literal) {
+    std::string escaped = replacePattern(json(literal).dump(), GRAMMAR_LITERAL_ESCAPE_RE, [&](const std::smatch & match) {
         char c = match.str()[0];
         return GRAMMAR_LITERAL_ESCAPES.at(c);
     });
@@ -134,7 +134,7 @@ static std::string format_literal(const std::string& literal) {
 
 class SchemaConverter {
 private:
-    std::function<json(const std::string&)> _fetch_json;
+    std::function<json(const std::string &)> _fetch_json;
     bool _dotall;
     std::map<std::string, std::string> _rules;
     std::unordered_map<std::string, nlohmann::json> _refs;
@@ -142,7 +142,7 @@ class SchemaConverter {
     std::vector<std::string> _errors;
     std::vector<std::string> _warnings;
 
-    std::string _add_rule(const std::string& name, const std::string& rule) {
+    std::string _add_rule(const std::string & name, const std::string & rule) {
         std::string esc_name = regex_replace(name, INVALID_RULE_CHARS_RE, "-");
         if (_rules.find(esc_name) == _rules.end() || _rules[esc_name] == rule) {
             _rules[esc_name] = rule;
@@ -158,7 +158,7 @@ class SchemaConverter {
         }
     }
 
-    std::string _generate_union_rule(const std::string& name, const std::vector<json>& alt_schemas) {
+    std::string _generate_union_rule(const std::string & name, const std::vector<json> & alt_schemas) {
         std::vector<std::string> rules;
         for (size_t i = 0; i < alt_schemas.size(); i++) {
             rules.push_back(visit(alt_schemas[i], name + (name.empty() ? "alternative-" : "-") + std::to_string(i)));
@@ -166,7 +166,7 @@ class SchemaConverter {
         return join(rules.begin(), rules.end(), " | ");
     }
 
-    std::string _visit_pattern(const std::string& pattern, const std::string& name) {
+    std::string _visit_pattern(const std::string & pattern, const std::string & name) {
         if (!(pattern.front() == '^' && pattern.back() == '$')) {
             _errors.push_back("Pattern must start with '^' and end with '$'");
             return "";
@@ -178,7 +178,7 @@ class SchemaConverter {
         size_t length = sub_pattern.length();
 
         using literal_or_rule = std::pair<std::string, bool>;
-        auto to_rule = [&](const literal_or_rule& ls) {
+        auto to_rule = [&](const literal_or_rule & ls) {
             auto is_literal = ls.second;
             auto s = ls.first;
             return is_literal ? "\"" + s + "\"" : s;
@@ -211,7 +211,7 @@ class SchemaConverter {
                     return true;
                 };
 
-                for (const auto& item : seq) {
+                for (const auto & item : seq) {
                     auto is_literal = item.second;
                     if (is_literal) {
                         literal += item.first;
@@ -223,7 +223,7 @@ class SchemaConverter {
                 flush_literal();
 
                 std::vector<std::string> results;
-                for (const auto& item : ret) {
+                for (const auto & item : ret) {
                     results.push_back(to_rule(item));
                 }
                 return std::make_pair(join(results.begin(), results.end(), " "), false);
@@ -300,7 +300,7 @@ class SchemaConverter {
                                 max_times = std::stoi(nums[1]);
                             }
                         }
-                    } catch (const std::invalid_argument& e) {
+                    } catch (const std::invalid_argument & e) {
                         _errors.push_back("Invalid number in curly brackets");
                         return std::make_pair("", false);
                     }
@@ -316,7 +316,7 @@ class SchemaConverter {
                         sub += "+";
                     } else {
                         if (!sub_is_literal) {
-                            std::string& sub_id = sub_rule_ids[sub];
+                            std::string & sub_id = sub_rule_ids[sub];
                             if (sub_id.empty()) {
                                 sub_id = _add_rule(name + "-" + std::to_string(sub_rule_ids.size()), sub);
                             }
@@ -386,7 +386,7 @@ class SchemaConverter {
         return _add_rule(name, "\"\\\"\" " + to_rule(transform()) + " \"\\\"\" space");
     }
 
-    std::string _resolve_ref(const std::string& ref) {
+    std::string _resolve_ref(const std::string & ref) {
         std::string ref_name = ref.substr(ref.find_last_of('/') + 1);
         if (_rules.find(ref_name) == _rules.end() && _refs_being_resolved.find(ref) == _refs_being_resolved.end()) {
             _refs_being_resolved.insert(ref);
@@ -398,15 +398,15 @@ class SchemaConverter {
     }
 
     std::string _build_object_rule(
-        const std::vector<std::pair<std::string, json>>& properties,
-        const std::unordered_set<std::string>& required,
-        const std::string& name,
-        const json& additional_properties)
+        const std::vector<std::pair<std::string, json>> & properties,
+        const std::unordered_set<std::string> & required,
+        const std::string & name,
+        const json & additional_properties)
     {
         std::vector<std::string> required_props;
         std::vector<std::string> optional_props;
         std::unordered_map<std::string, std::string> prop_kv_rule_names;
-        for (const auto& kv : properties) {
+        for (const auto & kv : properties) {
             const auto &prop_name = kv.first;
             const auto &prop_schema = kv.second;
 
@@ -443,7 +443,7 @@ class SchemaConverter {
                 rule += " \",\" space ( ";
             }
 
-            std::function<std::string(const std::vector<std::string>&, bool)> get_recursive_refs = [&](const std::vector<std::string>& ks, bool first_is_optional) {
+            std::function<std::string(const std::vector<std::string>&, bool)> get_recursive_refs = [&](const std::vector<std::string> & ks, bool first_is_optional) {
                 std::string res;
                 if (ks.empty()) {
                     return res;
@@ -488,22 +488,22 @@ class SchemaConverter {
 
 public:
     SchemaConverter(
-        const std::function<json(const std::string&)>& fetch_json,
+        const std::function<json(const std::string &)> & fetch_json,
         bool dotall)
           : _fetch_json(fetch_json), _dotall(dotall)
     {
         _rules["space"] = SPACE_RULE;
     }
 
-    void resolve_refs(nlohmann::json& schema, const std::string& url) {
+    void resolve_refs(nlohmann::json & schema, const std::string & url) {
         /*
         * Resolves all $ref fields in the given schema, fetching any remote schemas,
         * replacing each $ref with absolute reference URL and populates _refs with the
         * respective referenced (sub)schema dictionaries.
         */
-        std::function<void(json&)> visit_refs = [&](json& n) {
+        std::function<void(json &)> visit_refs = [&](json & n) {
             if (n.is_array()) {
-                for (auto& x : n) {
+                for (auto & x : n) {
                     visit_refs(x);
                 }
             } else if (n.is_object()) {
@@ -546,7 +546,7 @@ class SchemaConverter {
                         _refs[ref] = target;
                     }
                 } else {
-                    for (auto& kv : n.items()) {
+                    for (auto & kv : n.items()) {
                         visit_refs(kv.value());
                     }
                 }
@@ -556,7 +556,7 @@ class SchemaConverter {
         visit_refs(schema);
     }
 
-    std::string _generate_constant_rule(const json& value) {
+    std::string _generate_constant_rule(const json & value) {
         if (!value.is_string()) {
             _errors.push_back("Only std::string constants are supported, got " + value.dump());
             return "";
@@ -564,7 +564,7 @@ class SchemaConverter {
         return format_literal(value.get<std::string>());
     }
 
-    std::string visit(const json& schema, const std::string& name) {
+    std::string visit(const json & schema, const std::string & name) {
         json schema_type = schema.contains("type") ? schema["type"] : json();
         std::string schema_format = schema.contains("format") ? schema["format"].get<std::string>() : "";
         std::string rule_name = is_reserved_name(name) ? name + "-" : name.empty() ? "root" : name;
@@ -576,7 +576,7 @@ class SchemaConverter {
             return _add_rule(rule_name, _generate_union_rule(name, alt_schemas));
         } else if (schema_type.is_array()) {
             std::vector<json> schema_types;
-            for (const auto& t : schema_type) {
+            for (const auto & t : schema_type) {
                 schema_types.push_back({{"type", t}});
             }
             return _add_rule(rule_name, _generate_union_rule(name, schema_types));
@@ -584,7 +584,7 @@ class SchemaConverter {
             return _add_rule(rule_name, _generate_constant_rule(schema["const"]));
         } else if (schema.contains("enum")) {
             std::vector<std::string> enum_values;
-            for (const auto& v : schema["enum"]) {
+            for (const auto & v : schema["enum"]) {
                 enum_values.push_back(_generate_constant_rule(v));
             }
             return _add_rule(rule_name, join(enum_values.begin(), enum_values.end(), " | "));
@@ -593,7 +593,7 @@ class SchemaConverter {
                     (schema.contains("additionalProperties") && schema["additionalProperties"] != true))) {
             std::unordered_set<std::string> required;
             if (schema.contains("required") && schema["required"].is_array()) {
-                for (const auto& item : schema["required"]) {
+                for (const auto & item : schema["required"]) {
                     if (item.is_string()) {
                         required.insert(item.get<std::string>());
                     }
@@ -601,7 +601,7 @@ class SchemaConverter {
             }
             std::vector<std::pair<std::string, json>> properties;
             if (schema.contains("properties")) {
-                for (const auto& prop : schema["properties"].items()) {
+                for (const auto & prop : schema["properties"].items()) {
                     properties.emplace_back(prop.key(), prop.value());
                 }
             }
@@ -613,11 +613,11 @@ class SchemaConverter {
             std::unordered_set<std::string> required;
             std::vector<std::pair<std::string, json>> properties;
             std::string hybrid_name = name;
-            std::function<void(const json&, bool)> add_component = [&](const json& comp_schema, bool is_required) {
+            std::function<void(const json&, bool)> add_component = [&](const json & comp_schema, bool is_required) {
                 if (comp_schema.contains("$ref")) {
                     add_component(_refs[comp_schema["$ref"]], is_required);
                 } else if (comp_schema.contains("properties")) {
-                    for (const auto& prop : comp_schema["properties"].items()) {
+                    for (const auto & prop : comp_schema["properties"].items()) {
                         properties.emplace_back(prop.key(), prop.value());
                         if (is_required) {
                             required.insert(prop.key());
@@ -627,9 +627,9 @@ class SchemaConverter {
                   // todo warning
                 }
             };
-            for (auto& t : schema["allOf"]) {
+            for (auto & t : schema["allOf"]) {
                 if (t.contains("anyOf")) {
-                    for (auto& tt : t["anyOf"]) {
+                    for (auto & tt : t["anyOf"]) {
                         add_component(tt, false);
                     }
                 } else {
@@ -678,12 +678,12 @@ class SchemaConverter {
         } else if ((schema_type.is_null() || schema_type == "string") && std::regex_match(schema_format, std::regex("^uuid[1-5]?$"))) {
             return _add_rule(rule_name == "root" ? "root" : schema_format, PRIMITIVE_RULES.at("uuid"));
         } else if ((schema_type.is_null() || schema_type == "string") && DATE_RULES.find(schema_format) != DATE_RULES.end()) {
-            for (const auto& kv : DATE_RULES) {
+            for (const auto & kv : DATE_RULES) {
                 _add_rule(kv.first, kv.second);
             }
             return schema_format + "-string";
         } else if (schema.empty() || schema_type == "object") {
-            for (const auto& n : OBJECT_RULE_NAMES) {
+            for (const auto & n : OBJECT_RULE_NAMES) {
                 _add_rule(n, PRIMITIVE_RULES.at(n));
             }
             return _add_rule(rule_name, "object");
@@ -708,15 +708,15 @@ class SchemaConverter {
 
     std::string format_grammar() {
         std::stringstream ss;
-        for (const auto& kv : _rules) {
+        for (const auto & kv : _rules) {
             ss << kv.first << " ::= " << kv.second << std::endl;
         }
         return ss.str();
     }
 };
 
-std::string json_schema_to_grammar(const json& schema) {
-    SchemaConverter converter([](const std::string&) { return json::object(); }, /* dotall= */ false);
+std::string json_schema_to_grammar(const json & schema) {
+    SchemaConverter converter([](const std::string &) { return json::object(); }, /* dotall= */ false);
     auto copy = schema;
     converter.resolve_refs(copy, "input");
     converter.visit(copy, "");
diff --git a/tests/test-json-schema-to-grammar.cpp b/tests/test-json-schema-to-grammar.cpp
index 2790a628b449f..a13bb9d7f4c16 100755
--- a/tests/test-json-schema-to-grammar.cpp
+++ b/tests/test-json-schema-to-grammar.cpp
@@ -30,7 +30,7 @@ struct TestCase {
     void _print_failure_header() const {
         fprintf(stderr, "#\n# Test '%s' failed.\n#\n%s\n", name.c_str(), schema.c_str());
     }
-    void verify(const std::string& actual_grammar) const {
+    void verify(const std::string & actual_grammar) const {
         if (trim(actual_grammar) != trim(expected_grammar)) {
         _print_failure_header();
         fprintf(stderr, "# EXPECTED:\n%s\n# ACTUAL:\n%s\n", expected_grammar.c_str(), actual_grammar.c_str());
@@ -43,7 +43,7 @@ struct TestCase {
             if (state.symbol_ids.find("root") == state.symbol_ids.end()) {
                 throw std::runtime_error("Grammar failed to parse:\n" + expected_grammar);
             }
-        } catch (const std::runtime_error& ex) {
+        } catch (const std::runtime_error & ex) {
             _print_failure_header();
             fprintf(stderr, "# GRAMMAR ERROR: %s\n", ex.what());
             assert(false);
@@ -59,22 +59,22 @@ struct TestCase {
     }
 };
 
-static void write(const std::string& file, const std::string& content) {
+static void write(const std::string & file, const std::string & content) {
     std::ofstream f;
     f.open(file.c_str());
     f << content.c_str();
     f.close();
 }
 
-static std::string read(const std::string& file) {
+static std::string read(const std::string & file) {
     std::ostringstream actuals;
     actuals << std::ifstream(file.c_str()).rdbuf();
     return actuals.str();
 }
 
-static void test_all(const std::string& lang, std::function<void(const TestCase&)> runner) {
+static void test_all(const std::string & lang, std::function<void(const TestCase &)> runner) {
     fprintf(stderr, "#\n# Testing JSON schema conversion (%s)\n#\n", lang.c_str());
-    auto test = [&](const TestCase& tc) {
+    auto test = [&](const TestCase & tc) {
         fprintf(stderr, "- %s%s\n", tc.name.c_str(), tc.expected_status == FAILURE ? " (failure expected)" : "");
         runner(tc);
     };
@@ -794,29 +794,29 @@ static void test_all(const std::string& lang, std::function<void(const TestCase&
 }
 
 int main() {
-    test_all("C++", [](const TestCase& tc) {
+    test_all("C++", [](const TestCase & tc) {
         try {
             tc.verify(json_schema_to_grammar(nlohmann::json::parse(tc.schema)));
             tc.verify_status(SUCCESS);
-        } catch (const std::runtime_error& ex) {
+        } catch (const std::runtime_error & ex) {
             fprintf(stderr, "Error: %s\n", ex.what());
             tc.verify_status(FAILURE);
         }
     });
-    test_all("Python", [](const TestCase& tc) {
+    test_all("Python", [](const TestCase & tc) {
         write("test-json-schema-input.tmp", tc.schema);
         tc.verify_status(std::system(
             "python ./examples/json-schema-to-grammar.py test-json-schema-input.tmp > test-grammar-output.tmp") == 0 ? SUCCESS : FAILURE);
         tc.verify(read("test-grammar-output.tmp"));
     });
-    test_all("JavaScript", [](const TestCase& tc) {
+    test_all("JavaScript", [](const TestCase & tc) {
         write("test-json-schema-input.tmp", tc.schema);
         tc.verify_status(std::system(
             "node ./tests/run-json-schema-to-grammar.mjs test-json-schema-input.tmp > test-grammar-output.tmp") == 0 ? SUCCESS : FAILURE);
         tc.verify(read("test-grammar-output.tmp"));
     });
 
-    test_all("Check Expectations Validity", [](const TestCase& tc) {
+    test_all("Check Expectations Validity", [](const TestCase & tc) {
         if (tc.expected_status == SUCCESS) {
             tc.verify_expectation_parseable();
         }

From 4c46aec60f8af56da07d3f4c61f78940395188f1 Mon Sep 17 00:00:00 2001
From: ochafik <ochafik@google.com>
Date: Thu, 21 Mar 2024 10:11:26 +0000
Subject: [PATCH 98/98] json: nits

---
 common/json-schema-to-grammar.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/common/json-schema-to-grammar.cpp b/common/json-schema-to-grammar.cpp
index 90855b47e7576..dc6d30ef15ca2 100644
--- a/common/json-schema-to-grammar.cpp
+++ b/common/json-schema-to-grammar.cpp
@@ -443,7 +443,7 @@ class SchemaConverter {
                 rule += " \",\" space ( ";
             }
 
-            std::function<std::string(const std::vector<std::string>&, bool)> get_recursive_refs = [&](const std::vector<std::string> & ks, bool first_is_optional) {
+            std::function<std::string(const std::vector<std::string> &, bool)> get_recursive_refs = [&](const std::vector<std::string> & ks, bool first_is_optional) {
                 std::string res;
                 if (ks.empty()) {
                     return res;
@@ -613,7 +613,7 @@ class SchemaConverter {
             std::unordered_set<std::string> required;
             std::vector<std::pair<std::string, json>> properties;
             std::string hybrid_name = name;
-            std::function<void(const json&, bool)> add_component = [&](const json & comp_schema, bool is_required) {
+            std::function<void(const json &, bool)> add_component = [&](const json & comp_schema, bool is_required) {
                 if (comp_schema.contains("$ref")) {
                     add_component(_refs[comp_schema["$ref"]], is_required);
                 } else if (comp_schema.contains("properties")) {