Add new AST node type StatementsGroup

Used to group statements without creating a new lexical scope.
franko · Feb 25, 2016 · 639fe24 · 639fe24
1 parent fd9ed8b
commit 639fe24
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diff --git a/lang/ast-validate.lua b/lang/ast-validate.lua
@@ -216,6 +216,16 @@ local syntax = {
          }
       }
    },
+   StatementsGroup = {
+       kind = "StatementsGroup",
+       base = "Statement",
+       properties = {
+           statements = {
+               type = "list",
+               kind = "Statement",
+           }
+       }
+   },
    EmptyStatement = {
       kind = "EmptyStatement",
       base = "Statement",

diff --git a/lang/generator.lua b/lang/generator.lua
@@ -565,6 +565,12 @@ function TestRule:LogicalExpression(node, jmp, jreg, negate, store, dest)
     end
 end
 
+function StatementRule:StatementsGroup(node)
+    for i = 1, #node.statements do
+        self:emit(node.statements[i])
+    end
+end
+
 function StatementRule:CallExpression(node)
     self:expr_tomultireg(node, 0, false)
 end

diff --git a/lang/luacode-generator.lua b/lang/luacode-generator.lua
@@ -200,6 +200,12 @@ function ExpressionRule:SendExpression(node)
     return exp, operator.ident_priority
 end
 
+function StatementRule:StatementsGroup(node)
+    for i = 1, #node.statements do
+        self:emit(node.statements[i])
+    end
+end
+
 function StatementRule:FunctionDeclaration(node)
     self:proto_enter(0)
     local name = self:expr_emit(node.id)