Reapply "[kt_compiler_plugin] Add kt_plugin_cfg for reusable and comp… …osable op…" (#1131)

MODULE.bazel

@@ -91,3 +91,5 @@ use_repo(maven, "kotlin_rules_maven", "unpinned_kotlin_rules_maven")
 bazel_dep(name = "rules_pkg", version = "0.7.0")
 bazel_dep(name = "stardoc", version = "0.5.6", repo_name = "io_bazel_stardoc")
 bazel_dep(name = "rules_proto", version = "5.3.0-21.7")
+
+bazel_dep(name = "rules_testing", version = "0.5.0", dev_dependency = True)

docs/kotlin.md

@@ -361,7 +361,7 @@ kt_compiler_plugin(<a href="#kt_compiler_plugin-name">name</a>, <a href="#kt_com
 |<a id="kt_compiler_plugin-compile_phase"></a>compile_phase |  Runs the compiler plugin during kotlin compilation. Known examples: <code>allopen</code>, <code>sam_with_reciever</code>   | Boolean | optional | True |
 |<a id="kt_compiler_plugin-deps"></a>deps |  The list of libraries to be added to the compiler's plugin classpath   | <a href="https://bazel.build/concepts/labels">List of labels</a> | optional | [] |
 |<a id="kt_compiler_plugin-id"></a>id |  The ID of the plugin   | String | required |  |
-|<a id="kt_compiler_plugin-options"></a>options |  Dictionary of options to be passed to the plugin. Supports the following template values:<br><br>- <code>{generatedClasses}</code>: directory for generated class output - <code>{temp}</code>: temporary directory, discarded between invocations - <code>{generatedSources}</code>:  directory for generated source output   | <a href="https://bazel.build/rules/lib/dict">Dictionary: String -> String</a> | optional | {} |
+|<a id="kt_compiler_plugin-options"></a>options |  Dictionary of options to be passed to the plugin. Supports the following template values:<br><br>- <code>{generatedClasses}</code>: directory for generated class output - <code>{temp}</code>: temporary directory, discarded between invocations - <code>{generatedSources}</code>:  directory for generated source output - <code>{classpath}</code> : replaced with a list of jars separated by the filesystem appropriate separator.   | <a href="https://bazel.build/rules/lib/dict">Dictionary: String -> String</a> | optional | {} |
 |<a id="kt_compiler_plugin-stubs_phase"></a>stubs_phase |  Runs the compiler plugin in kapt stub generation.   | Boolean | optional | True |
 |<a id="kt_compiler_plugin-target_embedded_compiler"></a>target_embedded_compiler |  Plugin was compiled against the embeddable kotlin compiler. These plugins expect shaded kotlinc             dependencies, and will fail when running against a non-embeddable compiler.   | Boolean | optional | False |
 
@@ -482,6 +482,31 @@ kt_ksp_plugin(<a href="#kt_ksp_plugin-name">name</a>, <a href="#kt_ksp_plugin-de
 |<a id="kt_ksp_plugin-processor_class"></a>processor_class |  The fully qualified class name that the Java compiler uses as an entry point to the annotation processor.   | String | required |  |
 
 
+<a id="#kt_plugin_cfg"></a>
+
+## kt_plugin_cfg
+
+kt_plugin_cfg(<a href="#kt_plugin_cfg-name">name</a>, <a href="#kt_plugin_cfg-deps">deps</a>, <a href="#kt_plugin_cfg-options">options</a>, <a href="#kt_plugin_cfg-plugin">plugin</a>)
+
+
+
+        Configurations for kt_compiler_plugin, ksp_plugin, and java_plugin.
+
+        This allows setting options and dependencies independently from the initial plugin definition.
+
+
+
+**ATTRIBUTES**
+
+
+| Name  | Description | Type | Mandatory | Default |
+| :------------- | :------------- | :------------- | :------------- | :------------- |
+|<a id="kt_plugin_cfg-name"></a>name |  A unique name for this target.   | <a href="https://bazel.build/concepts/labels#target-names">Name</a> | required |  |
+|<a id="kt_plugin_cfg-deps"></a>deps |  Dependencies for this configuration.   | <a href="https://bazel.build/concepts/labels">List of labels</a> | optional | [] |
+|<a id="kt_plugin_cfg-options"></a>options |  A dictionary of flag to values to be used as plugin configuration options.   | <a href="https://bazel.build/rules/lib/dict">Dictionary: String -> List of strings</a> | optional | {} |
+|<a id="kt_plugin_cfg-plugin"></a>plugin |  The plugin to associate with this configuration   | <a href="https://bazel.build/concepts/labels">Label</a> | required |  |
+
+
 <a id="define_kt_toolchain"></a>
 
 ## define_kt_toolchain

examples/ksp/BUILD

@@ -14,7 +14,7 @@ load("@rules_java//java:defs.bzl", "java_binary", "java_plugin")
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-load("@rules_kotlin//kotlin:core.bzl", "define_kt_toolchain", "kt_ksp_plugin")
+load("@rules_kotlin//kotlin:core.bzl", "define_kt_toolchain", "kt_compiler_plugin", "kt_ksp_plugin", "kt_plugin_cfg")
 load("@rules_kotlin//kotlin:jvm.bzl", "kt_jvm_library")
 
 package(default_visibility = ["//visibility:public"])
@@ -81,3 +81,73 @@ build_test(
         "//:coffee_app_deploy.jar",
     ],
 )
+
+kt_compiler_plugin(
+    name = "ksp",
+    compile_phase = True,
+    id = "com.google.devtools.ksp.symbol-processing",
+    options = {
+        "apclasspath": "{classpath}",
+        # projectBaseDir shouldn't matter because incremental is disabled
+        "projectBaseDir": "{temp}",
+        # Disable incremental mode
+        "incremental": "false",
+        # Directory where class files are written to. Files written to this directory are class
+        # files being written directly from the annotation processor, not Kotlinc
+        "classOutputDir": "{generatedClasses}",
+        # Directory where generated Java sources files are written to
+        "javaOutputDir": "{generatedSources}",
+        # Directory where generated Kotlin sources files are written to
+        "kotlinOutputDir": "{generatedSources}",
+        # Directory where META-INF data is written to. This might not be the most ideal place to
+        # write this. Maybe just directly to the classes directory?
+        "resourceOutputDir": "{generatedSources}",
+        # TODO(bencodes) Not sure what this directory is yet.
+        "kspOutputDir": "{temp}",
+        # Directory to write KSP caches. Shouldn't matter because incremental is disabled
+        "cachesDir": "{temp}",
+        # Include in compilation as an example. This should be processed in the stubs phase.
+        "withCompilation": "true",
+        # Set returnOkOnError to false because we want to fail the build if there are any errors
+        "returnOkOnError": "false",
+        "allWarningsAsErrors": "false",
+    },
+    deps = [
+        "@rules_kotlin//kotlin/compiler:symbol-processing-api",
+        "@rules_kotlin//kotlin/compiler:symbol-processing-cmdline",
+    ],
+)
+
+kt_plugin_cfg(
+    name = "ksp_moshi",
+    options = {
+    },
+    plugin = ":ksp",
+    deps = [
+        "@maven//:com_squareup_moshi_moshi",
+        "@maven//:com_squareup_moshi_moshi_kotlin",
+        "@maven//:com_squareup_moshi_moshi_kotlin_codegen",
+    ],
+)
+
+kt_jvm_library(
+    name = "raw_ksp_coffee_app_lib",
+    srcs = ["CoffeeAppModel.kt"],
+    plugins = [
+        "//:ksp",
+        "//:ksp_moshi",
+    ],
+    deps = [
+        "@maven//:com_google_auto_service_auto_service_annotations",
+        "@maven//:com_google_auto_value_auto_value_annotations",
+        "@maven//:com_squareup_moshi_moshi",
+        "@maven//:com_squareup_moshi_moshi_kotlin",
+    ],
+)
+
+build_test(
+    name = "raw_ksp_lib_test",
+    targets = [
+        "//:raw_ksp_coffee_app_lib",
+    ],
+)

examples/ksp/MODULE.bazel

@@ -0,0 +1,6 @@
+###############################################################################
+# Bazel now uses Bzlmod by default to manage external dependencies.
+# Please consider migrating your external dependencies from WORKSPACE to MODULE.bazel.
+#
+# For more details, please check https://github.com/bazelbuild/bazel/issues/18958
+###############################################################################

kotlin/core.bzl

@@ -12,6 +12,7 @@ load(
     "//kotlin/internal/jvm:jvm.bzl",
     _kt_compiler_plugin = "kt_compiler_plugin",
     _kt_ksp_plugin = "kt_ksp_plugin",
+    _kt_plugin_cfg = "kt_plugin_cfg",
 )
 
 define_kt_toolchain = _define_kt_toolchain
@@ -20,3 +21,4 @@ kt_javac_options = _kt_javac_options
 kt_kotlinc_options = _kt_kotlinc_options
 kt_compiler_plugin = _kt_compiler_plugin
 kt_ksp_plugin = _kt_ksp_plugin
+kt_plugin_cfg = _kt_plugin_cfg

kotlin/internal/BUILD

@@ -45,6 +45,7 @@ bzl_library(
         "//kotlin/internal/lint",
         "//kotlin/internal/utils",
         "//src/main/starlark",
+        "//src/main/starlark/core/options",
         "@rules_java//java:rules",
     ],
 )

kotlin/internal/defs.bzl

@@ -11,6 +11,13 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.#
+load(
+    "//src/main/starlark/core/plugin:providers.bzl",
+    _KspPluginInfo = "KspPluginInfo",
+    _KtCompilerPluginInfo = "KtCompilerPluginInfo",
+    _KtCompilerPluginOption = "KtCompilerPluginOption",
+    _KtPluginConfiguration = "KtPluginConfiguration",
+)
 
 # The Kotlin Toolchain type.
 TOOLCHAIN_TYPE = "%s" % Label("//kotlin/internal:kt_toolchain_type")
@@ -50,18 +57,10 @@ KtJsInfo = provider(
     },
 )
 
-KtCompilerPluginInfo = provider(
-    fields = {
-        "plugin_jars": "List of plugin jars.",
-        "classpath": "The kotlin compiler plugin classpath.",
-        "stubs": "Run this plugin during kapt stub generation.",
-        "compile": "Run this plugin during koltinc compilation.",
-        "options": "List of plugin options, represented as structs with an id and a value field, to be passed to the compiler",
-    },
-)
+KtCompilerPluginInfo = _KtCompilerPluginInfo
 
-KspPluginInfo = provider(
-    fields = {
-        "plugins": "List of JavaPLuginInfo providers for the plugins to run with KSP",
-    },
-)
+KspPluginInfo = _KspPluginInfo
+
+KtCompilerPluginOption = _KtCompilerPluginOption
+
+KtPluginConfiguration = _KtPluginConfiguration