Adding most recent work

java/core/generate-test-sources-build.xml

@@ -4,6 +4,8 @@
         <arg value="--java_out=${generated.testsources.dir}"/>
         <arg value="--proto_path=${protobuf.source.dir}"/>
         <arg value="--proto_path=${test.proto.dir}"/>
+        <arg value="--experimental_allow_proto3_optional"/>
+        <arg value="${protobuf.source.dir}/google/protobuf/map_proto2_unittest.proto"/>
         <arg value="${protobuf.source.dir}/google/protobuf/unittest.proto"/>
         <arg value="${protobuf.source.dir}/google/protobuf/unittest_custom_options.proto"/>
         <arg value="${protobuf.source.dir}/google/protobuf/unittest_enormous_descriptor.proto"/>
@@ -22,6 +24,8 @@
         <arg value="${test.proto.dir}/com/google/protobuf/any_test.proto"/>
         <arg value="${test.proto.dir}/com/google/protobuf/cached_field_size_test.proto"/>
         <arg value="${test.proto.dir}/com/google/protobuf/deprecated_file.proto"/>
+        <arg value="${test.proto.dir}/com/google/protobuf/evil_names_proto2.proto"/>
+        <arg value="${test.proto.dir}/com/google/protobuf/evil_names_proto3.proto"/>
         <arg value="${test.proto.dir}/com/google/protobuf/field_presence_test.proto"/>
         <arg value="${test.proto.dir}/com/google/protobuf/lazy_fields_lite.proto"/>
         <arg value="${test.proto.dir}/com/google/protobuf/lite_equals_and_hash.proto"/>
@@ -44,6 +48,7 @@
         <arg value="${test.proto.dir}/com/google/protobuf/proto2_unknown_enum_values.proto"/>
         <arg value="${test.proto.dir}/com/google/protobuf/proto3_message.proto"/>
         <arg value="${test.proto.dir}/com/google/protobuf/proto3_message_lite.proto"/>
+        <arg value="${test.proto.dir}/com/google/protobuf/test.proto"/>
         <arg value="${test.proto.dir}/com/google/protobuf/test_bad_identifiers.proto"/>
         <arg value="${test.proto.dir}/com/google/protobuf/test_check_utf8.proto"/>
         <arg value="${test.proto.dir}/com/google/protobuf/test_check_utf8_size.proto"/>
@@ -58,4 +63,14 @@
         <arg value="${test.proto.dir}/com/google/protobuf/nested_extension_lite.proto"/>
         <arg value="${test.proto.dir}/com/google/protobuf/non_nested_extension_lite.proto"/>
     </exec>
+    <exec executable="${protoc}">
+      <arg value="--kotlin_out=${generated.testsources.dir}"/>
+      <arg value="--proto_path=${protobuf.source.dir}"/>
+      <arg value="--proto_path=${test.proto.dir}"/>
+      <arg value="--experimental_allow_proto3_optional"/>
+      <arg value="${protobuf.source.dir}/google/protobuf/map_proto2_unittest.proto"/>
+      <arg value="${protobuf.source.dir}/google/protobuf/unittest.proto"/>
+      <arg value="${test.proto.dir}/com/google/protobuf/evil_names_proto2.proto"/>
+    </exec>
+
 </project>

java/core/output.txt

@@ -0,0 +1,274 @@
+[INFO] Scanning for projects...
+[INFO] 
+[INFO] -----------------< com.google.protobuf:protobuf-java >------------------
+[INFO] Building Protocol Buffers [Core] 3.14.0
+[INFO] -------------------------------[ bundle ]-------------------------------
+[INFO] 
+[INFO] --- maven-clean-plugin:2.5:clean (default-clean) @ protobuf-java ---
+[INFO] Deleting /usr/local/google/home/deannagarcia/protobuf/java/core/target
+[INFO] 
+[INFO] --- maven-antrun-plugin:1.8:run (generate-sources) @ protobuf-java ---
+[INFO] Executing tasks
+
+main:
+     [echo] Running protoc ...
+    [mkdir] Created dir: /usr/local/google/home/deannagarcia/protobuf/java/core/target/generated-sources
+[INFO] Executed tasks
+[INFO] 
+[INFO] --- build-helper-maven-plugin:1.10:add-source (add-generated-sources) @ protobuf-java ---
+[INFO] Source directory: /usr/local/google/home/deannagarcia/protobuf/java/core/target/generated-sources added.
+[INFO] 
+[INFO] --- maven-resources-plugin:3.2.0:resources (default-resources) @ protobuf-java ---
+[INFO] Using 'UTF-8' encoding to copy filtered resources.
+[INFO] Using 'UTF-8' encoding to copy filtered properties files.
+[INFO] Copying 12 resources
+[INFO] 
+[INFO] --- maven-compiler-plugin:3.6.1:compile (default-compile) @ protobuf-java ---
+[INFO] Changes detected - recompiling the module!
+[INFO] Compiling 189 source files to /usr/local/google/home/deannagarcia/protobuf/java/core/target/classes
+[WARNING] /usr/local/google/home/deannagarcia/protobuf/java/core/src/main/java/com/google/protobuf/UnsafeUtil.java:[44,32] sun.misc.Unsafe is internal proprietary API and may be removed in a future release
+[WARNING] /usr/local/google/home/deannagarcia/protobuf/java/core/src/main/java/com/google/protobuf/UnsafeUtil.java:[289,18] sun.misc.Unsafe is internal proprietary API and may be removed in a future release
+[WARNING] /usr/local/google/home/deannagarcia/protobuf/java/core/src/main/java/com/google/protobuf/UnsafeUtil.java:[290,13] sun.misc.Unsafe is internal proprietary API and may be removed in a future release
+[WARNING] /usr/local/google/home/deannagarcia/protobuf/java/core/src/main/java/com/google/protobuf/UnsafeUtil.java:[294,53] sun.misc.Unsafe is internal proprietary API and may be removed in a future release
+[WARNING] /usr/local/google/home/deannagarcia/protobuf/java/core/src/main/java/com/google/protobuf/UnsafeUtil.java:[296,32] sun.misc.Unsafe is internal proprietary API and may be removed in a future release
+[WARNING] /usr/local/google/home/deannagarcia/protobuf/java/core/src/main/java/com/google/protobuf/UnsafeUtil.java:[297,33] sun.misc.Unsafe is internal proprietary API and may be removed in a future release
+[WARNING] /usr/local/google/home/deannagarcia/protobuf/java/core/src/main/java/com/google/protobuf/UnsafeUtil.java:[297,54] sun.misc.Unsafe is internal proprietary API and may be removed in a future release
+[WARNING] /usr/local/google/home/deannagarcia/protobuf/java/core/src/main/java/com/google/protobuf/UnsafeUtil.java:[481,13] sun.misc.Unsafe is internal proprietary API and may be removed in a future release
+[WARNING] /usr/local/google/home/deannagarcia/protobuf/java/core/src/main/java/com/google/protobuf/UnsafeUtil.java:[483,28] sun.misc.Unsafe is internal proprietary API and may be removed in a future release
+[WARNING] /usr/local/google/home/deannagarcia/protobuf/java/core/src/main/java/com/google/protobuf/UnsafeUtil.java:[612,31] sun.misc.Unsafe is internal proprietary API and may be removed in a future release
+[WARNING] /usr/local/google/home/deannagarcia/protobuf/java/core/src/main/java/com/google/protobuf/UnsafeUtil.java:[752,37] sun.misc.Unsafe is internal proprietary API and may be removed in a future release
+[WARNING] /usr/local/google/home/deannagarcia/protobuf/java/core/src/main/java/com/google/protobuf/UnsafeUtil.java:[877,37] sun.misc.Unsafe is internal proprietary API and may be removed in a future release
+[WARNING] /usr/local/google/home/deannagarcia/protobuf/java/core/src/main/java/com/google/protobuf/MessageSchema.java:[102,32] sun.misc.Unsafe is internal proprietary API and may be removed in a future release
+[WARNING] /usr/local/google/home/deannagarcia/protobuf/java/core/src/main/java/com/google/protobuf/MessageSchema.java:[405,19] sun.misc.Unsafe is internal proprietary API and may be removed in a future release
+[WARNING] /usr/local/google/home/deannagarcia/protobuf/java/core/src/main/java/com/google/protobuf/MessageSchema.java:[1429,19] sun.misc.Unsafe is internal proprietary API and may be removed in a future release
+[WARNING] /usr/local/google/home/deannagarcia/protobuf/java/core/src/main/java/com/google/protobuf/MessageSchema.java:[1995,19] sun.misc.Unsafe is internal proprietary API and may be removed in a future release
+[WARNING] /usr/local/google/home/deannagarcia/protobuf/java/core/src/main/java/com/google/protobuf/MessageSchema.java:[2567,19] sun.misc.Unsafe is internal proprietary API and may be removed in a future release
+[WARNING] /usr/local/google/home/deannagarcia/protobuf/java/core/src/main/java/com/google/protobuf/MessageSchema.java:[4669,19] sun.misc.Unsafe is internal proprietary API and may be removed in a future release
+[WARNING] /usr/local/google/home/deannagarcia/protobuf/java/core/src/main/java/com/google/protobuf/MessageSchema.java:[4701,19] sun.misc.Unsafe is internal proprietary API and may be removed in a future release
+[WARNING] /usr/local/google/home/deannagarcia/protobuf/java/core/src/main/java/com/google/protobuf/MessageSchema.java:[4881,19] sun.misc.Unsafe is internal proprietary API and may be removed in a future release
+[WARNING] /usr/local/google/home/deannagarcia/protobuf/java/core/src/main/java/com/google/protobuf/MessageSchema.java:[5189,19] sun.misc.Unsafe is internal proprietary API and may be removed in a future release
+[INFO] /usr/local/google/home/deannagarcia/protobuf/java/core/src/main/java/com/google/protobuf/AbstractMessageLite.java: Some input files use or override a deprecated API.
+[INFO] /usr/local/google/home/deannagarcia/protobuf/java/core/src/main/java/com/google/protobuf/AbstractMessageLite.java: Recompile with -Xlint:deprecation for details.
+[INFO] /usr/local/google/home/deannagarcia/protobuf/java/core/src/main/java/com/google/protobuf/AbstractMessageLite.java: Some input files use unchecked or unsafe operations.
+[INFO] /usr/local/google/home/deannagarcia/protobuf/java/core/src/main/java/com/google/protobuf/AbstractMessageLite.java: Recompile with -Xlint:unchecked for details.
+[INFO] 
+[INFO] --- kotlin-maven-plugin:1.4.31:compile (compile) @ protobuf-java ---
+[WARNING] /usr/local/google/home/deannagarcia/protobuf/java/core/src/main/kotlin/com/google/protobuf/OnlyForUseByGeneratedProtoCode.kt: (8, 2) This class can only be used with the compiler argument '-Xopt-in=kotlin.RequiresOptIn'
+[WARNING] /usr/local/google/home/deannagarcia/protobuf/java/core/src/main/kotlin/com/google/protobuf/OnlyForUseByGeneratedProtoCode.kt: (14, 11) This class can only be used with the compiler argument '-Xopt-in=kotlin.RequiresOptIn'
+[INFO] 
+[INFO] --- maven-antrun-plugin:1.8:run (generate-test-sources) @ protobuf-java ---
+[INFO] Executing tasks
+
+main:
+    [mkdir] Created dir: /usr/local/google/home/deannagarcia/protobuf/java/core/target/generated-test-sources
+     [exec] [libprotobuf WARNING google/protobuf/compiler/java/java_file.cc:244] The optimize_for = LITE_RUNTIME option is no longer supported by protobuf Java code generator and is ignored--protoc will always generate full runtime code for Java. To use Java Lite runtime, users should use the Java Lite plugin instead. See:
+     [exec]   https://github.com/protocolbuffers/protobuf/blob/master/java/lite.md
+     [exec] [libprotobuf WARNING google/protobuf/compiler/java/java_file.cc:244] The optimize_for = LITE_RUNTIME option is no longer supported by protobuf Java code generator and is ignored--protoc will always generate full runtime code for Java. To use Java Lite runtime, users should use the Java Lite plugin instead. See:
+     [exec]   https://github.com/protocolbuffers/protobuf/blob/master/java/lite.md
+     [exec] [libprotobuf WARNING google/protobuf/compiler/java/java_file.cc:244] The optimize_for = LITE_RUNTIME option is no longer supported by protobuf Java code generator and is ignored--protoc will always generate full runtime code for Java. To use Java Lite runtime, users should use the Java Lite plugin instead. See:
+     [exec]   https://github.com/protocolbuffers/protobuf/blob/master/java/lite.md
+     [exec] [libprotobuf WARNING google/protobuf/compiler/java/java_file.cc:244] The optimize_for = LITE_RUNTIME option is no longer supported by protobuf Java code generator and is ignored--protoc will always generate full runtime code for Java. To use Java Lite runtime, users should use the Java Lite plugin instead. See:
+     [exec]   https://github.com/protocolbuffers/protobuf/blob/master/java/lite.md
+     [exec] [libprotobuf WARNING google/protobuf/compiler/java/java_file.cc:244] The optimize_for = LITE_RUNTIME option is no longer supported by protobuf Java code generator and is ignored--protoc will always generate full runtime code for Java. To use Java Lite runtime, users should use the Java Lite plugin instead. See:
+     [exec]   https://github.com/protocolbuffers/protobuf/blob/master/java/lite.md
+     [exec] [libprotobuf WARNING google/protobuf/compiler/java/java_context.cc:149] field "io_protocol_tests.TestConflictingFieldNames.int32_field" is conflicting with another field: both repeated field "int32_field" and singular field "int32_field_list" generate the method "getInt32FieldList()"
+     [exec] [libprotobuf WARNING google/protobuf/compiler/java/java_context.cc:149] field "io_protocol_tests.TestConflictingFieldNames.enum_field" is conflicting with another field: capitalized name of field "enum_field" conflicts with field "EnumField"
+     [exec] [libprotobuf WARNING google/protobuf/compiler/java/java_context.cc:149] field "io_protocol_tests.TestConflictingFieldNames.string_field" is conflicting with another field: capitalized name of field "string_field" conflicts with field "StringField"
+     [exec] [libprotobuf WARNING google/protobuf/compiler/java/java_context.cc:149] field "io_protocol_tests.TestConflictingFieldNames.bytes_field" is conflicting with another field: capitalized name of field "bytes_field" conflicts with field "BytesField"
+     [exec] [libprotobuf WARNING google/protobuf/compiler/java/java_context.cc:149] field "io_protocol_tests.TestConflictingFieldNames.message_field" is conflicting with another field: capitalized name of field "message_field" conflicts with field "MessageField"
+     [exec] [libprotobuf WARNING google/protobuf/compiler/java/java_context.cc:149] field "io_protocol_tests.TestConflictingFieldNames.int32_field_count" is conflicting with another field: both repeated field "Int32Field" and singular field "int32_field_count" generate the method "getInt32FieldCount()"
+     [exec] [libprotobuf WARNING google/protobuf/compiler/java/java_context.cc:149] field "io_protocol_tests.TestConflictingFieldNames.enum_field_count" is conflicting with another field: both repeated field "EnumField" and singular field "enum_field_count" generate the method "getEnumFieldCount()"
+     [exec] [libprotobuf WARNING google/protobuf/compiler/java/java_context.cc:149] field "io_protocol_tests.TestConflictingFieldNames.string_field_count" is conflicting with another field: both repeated field "StringField" and singular field "string_field_count" generate the method "getStringFieldCount()"
+     [exec] [libprotobuf WARNING google/protobuf/compiler/java/java_context.cc:149] field "io_protocol_tests.TestConflictingFieldNames.bytes_field_count" is conflicting with another field: both repeated field "BytesField" and singular field "bytes_field_count" generate the method "getBytesFieldCount()"
+     [exec] [libprotobuf WARNING google/protobuf/compiler/java/java_context.cc:149] field "io_protocol_tests.TestConflictingFieldNames.message_field_count" is conflicting with another field: both repeated field "MessageField" and singular field "message_field_count" generate the method "getMessageFieldCount()"
+     [exec] [libprotobuf WARNING google/protobuf/compiler/java/java_context.cc:149] field "io_protocol_tests.TestConflictingFieldNames.Int32Field" is conflicting with another field: both repeated field "Int32Field" and singular field "int32_field_list" generate the method "getInt32FieldList()"
+     [exec] [libprotobuf WARNING google/protobuf/compiler/java/java_context.cc:149] field "io_protocol_tests.TestConflictingFieldNames.EnumField" is conflicting with another field: both repeated field "EnumField" and singular field "enum_field_count" generate the method "getEnumFieldCount()"
+     [exec] [libprotobuf WARNING google/protobuf/compiler/java/java_context.cc:149] field "io_protocol_tests.TestConflictingFieldNames.StringField" is conflicting with another field: both repeated field "StringField" and singular field "string_field_count" generate the method "getStringFieldCount()"
+     [exec] [libprotobuf WARNING google/protobuf/compiler/java/java_context.cc:149] field "io_protocol_tests.TestConflictingFieldNames.BytesField" is conflicting with another field: both repeated field "BytesField" and singular field "bytes_field_count" generate the method "getBytesFieldCount()"
+     [exec] [libprotobuf WARNING google/protobuf/compiler/java/java_context.cc:149] field "io_protocol_tests.TestConflictingFieldNames.MessageField" is conflicting with another field: both repeated field "MessageField" and singular field "message_field_count" generate the method "getMessageFieldCount()"
+     [exec] [libprotobuf WARNING google/protobuf/compiler/java/java_context.cc:149] field "io_protocol_tests.TestConflictingFieldNames.int32_field_list" is conflicting with another field: both repeated field "Int32Field" and singular field "int32_field_list" generate the method "getInt32FieldList()"
+     [exec] [libprotobuf WARNING google/protobuf/compiler/java/java_context.cc:149] field "io_protocol_tests.TestConflictingFieldNames.field_name" is conflicting with another field: capitalized name of field "field_name" conflicts with field "field__name"
+     [exec] [libprotobuf WARNING google/protobuf/compiler/java/java_context.cc:149] field "io_protocol_tests.TestConflictingFieldNames.field__name" is conflicting with another field: capitalized name of field "field_name" conflicts with field "field__name"
+     [exec] [libprotobuf WARNING google/protobuf/compiler/java/java_context.cc:149] field "io_protocol_tests.TestConflictingFieldNames._2conflict" is conflicting with another field: capitalized name of field "_2conflict" conflicts with field "__2conflict"
+     [exec] [libprotobuf WARNING google/protobuf/compiler/java/java_context.cc:149] field "io_protocol_tests.TestConflictingFieldNames.__2conflict" is conflicting with another field: capitalized name of field "_2conflict" conflicts with field "__2conflict"
+[INFO] Executed tasks
+[INFO] 
+[INFO] --- build-helper-maven-plugin:1.10:add-test-source (add-generated-test-sources) @ protobuf-java ---
+[INFO] Test Source directory: /usr/local/google/home/deannagarcia/protobuf/java/core/target/generated-test-sources added.
+[INFO] 
+[INFO] --- maven-resources-plugin:3.2.0:testResources (default-testResources) @ protobuf-java ---
+[INFO] Using 'UTF-8' encoding to copy filtered resources.
+[INFO] Using 'UTF-8' encoding to copy filtered properties files.
+[INFO] Copying 2 resources
+[INFO] 
+[INFO] --- maven-compiler-plugin:3.6.1:testCompile (default-testCompile) @ protobuf-java ---
+[INFO] Changes detected - recompiling the module!
+[INFO] Compiling 176 source files to /usr/local/google/home/deannagarcia/protobuf/java/core/target/test-classes
+[INFO] /usr/local/google/home/deannagarcia/protobuf/java/core/src/test/java/com/google/protobuf/TestUtil.java: Some input files use or override a deprecated API.
+[INFO] /usr/local/google/home/deannagarcia/protobuf/java/core/src/test/java/com/google/protobuf/TestUtil.java: Recompile with -Xlint:deprecation for details.
+[INFO] 
+[INFO] --- kotlin-maven-plugin:1.4.31:test-compile (test-compile) @ protobuf-java ---
+[ERROR] /usr/local/google/home/deannagarcia/protobuf/java/core/src/test/kotlin/com/google/protobuf/Proto2Test.kt: (452, 52) Assignment operators ambiguity: 
+public operator fun <T> Collection<Int!>.plus(element: Int!): List<Int!> defined in kotlin.collections
+public final inline operator fun <E> ExtensionList<Int!, UnittestProto.TestAllExtensions>.plusAssign(value: Int!): Unit defined in protobuf_unittest.TestAllExtensionsKt.Dsl
+[ERROR] /usr/local/google/home/deannagarcia/protobuf/java/core/src/test/kotlin/com/google/protobuf/Proto2Test.kt: (453, 52) Assignment operators ambiguity: 
+public operator fun <T> Collection<Long!>.plus(element: Long!): List<Long!> defined in kotlin.collections
+public final inline operator fun <E> ExtensionList<Long!, UnittestProto.TestAllExtensions>.plusAssign(value: Long!): Unit defined in protobuf_unittest.TestAllExtensionsKt.Dsl
+[ERROR] /usr/local/google/home/deannagarcia/protobuf/java/core/src/test/kotlin/com/google/protobuf/Proto2Test.kt: (454, 53) Assignment operators ambiguity: 
+public operator fun <T> Collection<Int!>.plus(element: Int!): List<Int!> defined in kotlin.collections
+public final inline operator fun <E> ExtensionList<Int!, UnittestProto.TestAllExtensions>.plusAssign(value: Int!): Unit defined in protobuf_unittest.TestAllExtensionsKt.Dsl
+[ERROR] /usr/local/google/home/deannagarcia/protobuf/java/core/src/test/kotlin/com/google/protobuf/Proto2Test.kt: (455, 53) Assignment operators ambiguity: 
+public operator fun <T> Collection<Long!>.plus(element: Long!): List<Long!> defined in kotlin.collections
+public final inline operator fun <E> ExtensionList<Long!, UnittestProto.TestAllExtensions>.plusAssign(value: Long!): Unit defined in protobuf_unittest.TestAllExtensionsKt.Dsl
+[ERROR] /usr/local/google/home/deannagarcia/protobuf/java/core/src/test/kotlin/com/google/protobuf/Proto2Test.kt: (456, 53) Assignment operators ambiguity: 
+public operator fun <T> Collection<Int!>.plus(element: Int!): List<Int!> defined in kotlin.collections
+public final inline operator fun <E> ExtensionList<Int!, UnittestProto.TestAllExtensions>.plusAssign(value: Int!): Unit defined in protobuf_unittest.TestAllExtensionsKt.Dsl
+[ERROR] /usr/local/google/home/deannagarcia/protobuf/java/core/src/test/kotlin/com/google/protobuf/Proto2Test.kt: (457, 53) Assignment operators ambiguity: 
+public operator fun <T> Collection<Long!>.plus(element: Long!): List<Long!> defined in kotlin.collections
+public final inline operator fun <E> ExtensionList<Long!, UnittestProto.TestAllExtensions>.plusAssign(value: Long!): Unit defined in protobuf_unittest.TestAllExtensionsKt.Dsl
+[ERROR] /usr/local/google/home/deannagarcia/protobuf/java/core/src/test/kotlin/com/google/protobuf/Proto2Test.kt: (458, 54) Assignment operators ambiguity: 
+public operator fun <T> Collection<Int!>.plus(element: Int!): List<Int!> defined in kotlin.collections
+public final inline operator fun <E> ExtensionList<Int!, UnittestProto.TestAllExtensions>.plusAssign(value: Int!): Unit defined in protobuf_unittest.TestAllExtensionsKt.Dsl
+[ERROR] /usr/local/google/home/deannagarcia/protobuf/java/core/src/test/kotlin/com/google/protobuf/Proto2Test.kt: (459, 54) Assignment operators ambiguity: 
+public operator fun <T> Collection<Long!>.plus(element: Long!): List<Long!> defined in kotlin.collections
+public final inline operator fun <E> ExtensionList<Long!, UnittestProto.TestAllExtensions>.plusAssign(value: Long!): Unit defined in protobuf_unittest.TestAllExtensionsKt.Dsl
+[ERROR] /usr/local/google/home/deannagarcia/protobuf/java/core/src/test/kotlin/com/google/protobuf/Proto2Test.kt: (460, 55) Assignment operators ambiguity: 
+public operator fun <T> Collection<Int!>.plus(element: Int!): List<Int!> defined in kotlin.collections
+public final inline operator fun <E> ExtensionList<Int!, UnittestProto.TestAllExtensions>.plusAssign(value: Int!): Unit defined in protobuf_unittest.TestAllExtensionsKt.Dsl
+[ERROR] /usr/local/google/home/deannagarcia/protobuf/java/core/src/test/kotlin/com/google/protobuf/Proto2Test.kt: (461, 55) Assignment operators ambiguity: 
+public operator fun <T> Collection<Long!>.plus(element: Long!): List<Long!> defined in kotlin.collections
+public final inline operator fun <E> ExtensionList<Long!, UnittestProto.TestAllExtensions>.plusAssign(value: Long!): Unit defined in protobuf_unittest.TestAllExtensionsKt.Dsl
+[ERROR] /usr/local/google/home/deannagarcia/protobuf/java/core/src/test/kotlin/com/google/protobuf/Proto2Test.kt: (462, 52) Assignment operators ambiguity: 
+public operator fun <T> Collection<Float!>.plus(element: Float!): List<Float!> defined in kotlin.collections
+public final inline operator fun <E> ExtensionList<Float!, UnittestProto.TestAllExtensions>.plusAssign(value: Float!): Unit defined in protobuf_unittest.TestAllExtensionsKt.Dsl
+[ERROR] /usr/local/google/home/deannagarcia/protobuf/java/core/src/test/kotlin/com/google/protobuf/Proto2Test.kt: (463, 53) Assignment operators ambiguity: 
+public operator fun <T> Collection<Double!>.plus(element: Double!): List<Double!> defined in kotlin.collections
+public final inline operator fun <E> ExtensionList<Double!, UnittestProto.TestAllExtensions>.plusAssign(value: Double!): Unit defined in protobuf_unittest.TestAllExtensionsKt.Dsl
+[ERROR] /usr/local/google/home/deannagarcia/protobuf/java/core/src/test/kotlin/com/google/protobuf/Proto2Test.kt: (464, 51) Assignment operators ambiguity: 
+public operator fun <T> Collection<Boolean!>.plus(element: Boolean!): List<Boolean!> defined in kotlin.collections
+public final inline operator fun <E> ExtensionList<Boolean!, UnittestProto.TestAllExtensions>.plusAssign(value: Boolean!): Unit defined in protobuf_unittest.TestAllExtensionsKt.Dsl
+[ERROR] /usr/local/google/home/deannagarcia/protobuf/java/core/src/test/kotlin/com/google/protobuf/Proto2Test.kt: (465, 53) Assignment operators ambiguity: 
+public operator fun <T> Collection<String!>.plus(element: String!): List<String!> defined in kotlin.collections
+public final inline operator fun <E> ExtensionList<String!, UnittestProto.TestAllExtensions>.plusAssign(value: String!): Unit defined in protobuf_unittest.TestAllExtensionsKt.Dsl
+[ERROR] /usr/local/google/home/deannagarcia/protobuf/java/core/src/test/kotlin/com/google/protobuf/Proto2Test.kt: (466, 52) Assignment operators ambiguity: 
+public operator fun <T> Collection<Serializable!>.plus(elements: Iterable<Serializable!>): List<Serializable!> defined in kotlin.collections
+public final inline operator fun <E> ExtensionList<ByteString!, UnittestProto.TestAllExtensions>.plusAssign(value: ByteString!): Unit defined in protobuf_unittest.TestAllExtensionsKt.Dsl
+[ERROR] /usr/local/google/home/deannagarcia/protobuf/java/core/src/test/kotlin/com/google/protobuf/Proto2Test.kt: (467, 52) Assignment operators ambiguity: 
+public operator fun <T> Collection<UnittestProto.RepeatedGroup_extension!>.plus(element: UnittestProto.RepeatedGroup_extension!): List<UnittestProto.RepeatedGroup_extension!> defined in kotlin.collections
+public final inline operator fun <E> ExtensionList<UnittestProto.RepeatedGroup_extension!, UnittestProto.TestAllExtensions>.plusAssign(value: UnittestProto.RepeatedGroup_extension!): Unit defined in protobuf_unittest.TestAllExtensionsKt.Dsl
+[ERROR] /usr/local/google/home/deannagarcia/protobuf/java/core/src/test/kotlin/com/google/protobuf/Proto2Test.kt: (468, 60) Assignment operators ambiguity: 
+public operator fun <T> Collection<UnittestProto.TestAllTypes.NestedMessage!>.plus(element: UnittestProto.TestAllTypes.NestedMessage!): List<UnittestProto.TestAllTypes.NestedMessage!> defined in kotlin.collections
+public final inline operator fun <E> ExtensionList<UnittestProto.TestAllTypes.NestedMessage!, UnittestProto.TestAllExtensions>.plusAssign(value: UnittestProto.TestAllTypes.NestedMessage!): Unit defined in protobuf_unittest.TestAllExtensionsKt.Dsl
+[ERROR] /usr/local/google/home/deannagarcia/protobuf/java/core/src/test/kotlin/com/google/protobuf/Proto2Test.kt: (470, 61) Assignment operators ambiguity: 
+public operator fun <T> Collection<UnittestProto.ForeignMessage!>.plus(element: UnittestProto.ForeignMessage!): List<UnittestProto.ForeignMessage!> defined in kotlin.collections
+public final inline operator fun <E> ExtensionList<UnittestProto.ForeignMessage!, UnittestProto.TestAllExtensions>.plusAssign(value: UnittestProto.ForeignMessage!): Unit defined in protobuf_unittest.TestAllExtensionsKt.Dsl
+[ERROR] /usr/local/google/home/deannagarcia/protobuf/java/core/src/test/kotlin/com/google/protobuf/Proto2Test.kt: (471, 60) Assignment operators ambiguity: 
+public operator fun <T> Collection<UnittestImport.ImportMessage!>.plus(element: UnittestImport.ImportMessage!): List<UnittestImport.ImportMessage!> defined in kotlin.collections
+public final inline operator fun <E> ExtensionList<UnittestImport.ImportMessage!, UnittestProto.TestAllExtensions>.plusAssign(value: UnittestImport.ImportMessage!): Unit defined in protobuf_unittest.TestAllExtensionsKt.Dsl
+[ERROR] /usr/local/google/home/deannagarcia/protobuf/java/core/src/test/kotlin/com/google/protobuf/Proto2Test.kt: (473, 58) Assignment operators ambiguity: 
+public operator fun <T> Collection<UnittestProto.TestAllTypes.NestedMessage!>.plus(element: UnittestProto.TestAllTypes.NestedMessage!): List<UnittestProto.TestAllTypes.NestedMessage!> defined in kotlin.collections
+public final inline operator fun <E> ExtensionList<UnittestProto.TestAllTypes.NestedMessage!, UnittestProto.TestAllExtensions>.plusAssign(value: UnittestProto.TestAllTypes.NestedMessage!): Unit defined in protobuf_unittest.TestAllExtensionsKt.Dsl
+[ERROR] /usr/local/google/home/deannagarcia/protobuf/java/core/src/test/kotlin/com/google/protobuf/Proto2Test.kt: (475, 57) Assignment operators ambiguity: 
+public operator fun <T> Collection<UnittestProto.TestAllTypes.NestedEnum!>.plus(element: UnittestProto.TestAllTypes.NestedEnum!): List<UnittestProto.TestAllTypes.NestedEnum!> defined in kotlin.collections
+public final inline operator fun <E> ExtensionList<UnittestProto.TestAllTypes.NestedEnum!, UnittestProto.TestAllExtensions>.plusAssign(value: UnittestProto.TestAllTypes.NestedEnum!): Unit defined in protobuf_unittest.TestAllExtensionsKt.Dsl
+[ERROR] /usr/local/google/home/deannagarcia/protobuf/java/core/src/test/kotlin/com/google/protobuf/Proto2Test.kt: (476, 58) Assignment operators ambiguity: 
+public operator fun <T> Collection<UnittestProto.ForeignEnum!>.plus(element: UnittestProto.ForeignEnum!): List<UnittestProto.ForeignEnum!> defined in kotlin.collections
+public final inline operator fun <E> ExtensionList<UnittestProto.ForeignEnum!, UnittestProto.TestAllExtensions>.plusAssign(value: UnittestProto.ForeignEnum!): Unit defined in protobuf_unittest.TestAllExtensionsKt.Dsl
+[ERROR] /usr/local/google/home/deannagarcia/protobuf/java/core/src/test/kotlin/com/google/protobuf/Proto2Test.kt: (477, 57) Assignment operators ambiguity: 
+public operator fun <T> Collection<UnittestImport.ImportEnum!>.plus(element: UnittestImport.ImportEnum!): List<UnittestImport.ImportEnum!> defined in kotlin.collections
+public final inline operator fun <E> ExtensionList<UnittestImport.ImportEnum!, UnittestProto.TestAllExtensions>.plusAssign(value: UnittestImport.ImportEnum!): Unit defined in protobuf_unittest.TestAllExtensionsKt.Dsl
+[ERROR] /usr/local/google/home/deannagarcia/protobuf/java/core/src/test/kotlin/com/google/protobuf/Proto2Test.kt: (478, 58) Assignment operators ambiguity: 
+public operator fun <T> Collection<String!>.plus(element: String!): List<String!> defined in kotlin.collections
+public final inline operator fun <E> ExtensionList<String!, UnittestProto.TestAllExtensions>.plusAssign(value: String!): Unit defined in protobuf_unittest.TestAllExtensionsKt.Dsl
+[ERROR] /usr/local/google/home/deannagarcia/protobuf/java/core/src/test/kotlin/com/google/protobuf/Proto2Test.kt: (479, 51) Assignment operators ambiguity: 
+public operator fun <T> Collection<String!>.plus(element: String!): List<String!> defined in kotlin.collections
+public final inline operator fun <E> ExtensionList<String!, UnittestProto.TestAllExtensions>.plusAssign(value: String!): Unit defined in protobuf_unittest.TestAllExtensionsKt.Dsl
+[INFO] ------------------------------------------------------------------------
+[INFO] BUILD FAILURE
+[INFO] ------------------------------------------------------------------------
+[INFO] Total time:  01:22 min
+[INFO] Finished at: 2021-03-10T00:24:01Z
+[INFO] ------------------------------------------------------------------------
+[ERROR] Failed to execute goal org.jetbrains.kotlin:kotlin-maven-plugin:1.4.31:test-compile (test-compile) on project protobuf-java: Compilation failure: Compilation failure: 
+[ERROR] /usr/local/google/home/deannagarcia/protobuf/java/core/src/test/kotlin/com/google/protobuf/Proto2Test.kt:[452,52] Assignment operators ambiguity: 
+[ERROR] public operator fun <T> Collection<Int!>.plus(element: Int!): List<Int!> defined in kotlin.collections
+[ERROR] public final inline operator fun <E> ExtensionList<Int!, UnittestProto.TestAllExtensions>.plusAssign(value: Int!): Unit defined in protobuf_unittest.TestAllExtensionsKt.Dsl
+[ERROR] /usr/local/google/home/deannagarcia/protobuf/java/core/src/test/kotlin/com/google/protobuf/Proto2Test.kt:[453,52] Assignment operators ambiguity: 
+[ERROR] public operator fun <T> Collection<Long!>.plus(element: Long!): List<Long!> defined in kotlin.collections
+[ERROR] public final inline operator fun <E> ExtensionList<Long!, UnittestProto.TestAllExtensions>.plusAssign(value: Long!): Unit defined in protobuf_unittest.TestAllExtensionsKt.Dsl
+[ERROR] /usr/local/google/home/deannagarcia/protobuf/java/core/src/test/kotlin/com/google/protobuf/Proto2Test.kt:[454,53] Assignment operators ambiguity: 
+[ERROR] public operator fun <T> Collection<Int!>.plus(element: Int!): List<Int!> defined in kotlin.collections
+[ERROR] public final inline operator fun <E> ExtensionList<Int!, UnittestProto.TestAllExtensions>.plusAssign(value: Int!): Unit defined in protobuf_unittest.TestAllExtensionsKt.Dsl
+[ERROR] /usr/local/google/home/deannagarcia/protobuf/java/core/src/test/kotlin/com/google/protobuf/Proto2Test.kt:[455,53] Assignment operators ambiguity: 
+[ERROR] public operator fun <T> Collection<Long!>.plus(element: Long!): List<Long!> defined in kotlin.collections
+[ERROR] public final inline operator fun <E> ExtensionList<Long!, UnittestProto.TestAllExtensions>.plusAssign(value: Long!): Unit defined in protobuf_unittest.TestAllExtensionsKt.Dsl
+[ERROR] /usr/local/google/home/deannagarcia/protobuf/java/core/src/test/kotlin/com/google/protobuf/Proto2Test.kt:[456,53] Assignment operators ambiguity: 
+[ERROR] public operator fun <T> Collection<Int!>.plus(element: Int!): List<Int!> defined in kotlin.collections
+[ERROR] public final inline operator fun <E> ExtensionList<Int!, UnittestProto.TestAllExtensions>.plusAssign(value: Int!): Unit defined in protobuf_unittest.TestAllExtensionsKt.Dsl
+[ERROR] /usr/local/google/home/deannagarcia/protobuf/java/core/src/test/kotlin/com/google/protobuf/Proto2Test.kt:[457,53] Assignment operators ambiguity: 
+[ERROR] public operator fun <T> Collection<Long!>.plus(element: Long!): List<Long!> defined in kotlin.collections
+[ERROR] public final inline operator fun <E> ExtensionList<Long!, UnittestProto.TestAllExtensions>.plusAssign(value: Long!): Unit defined in protobuf_unittest.TestAllExtensionsKt.Dsl
+[ERROR] /usr/local/google/home/deannagarcia/protobuf/java/core/src/test/kotlin/com/google/protobuf/Proto2Test.kt:[458,54] Assignment operators ambiguity: 
+[ERROR] public operator fun <T> Collection<Int!>.plus(element: Int!): List<Int!> defined in kotlin.collections
+[ERROR] public final inline operator fun <E> ExtensionList<Int!, UnittestProto.TestAllExtensions>.plusAssign(value: Int!): Unit defined in protobuf_unittest.TestAllExtensionsKt.Dsl
+[ERROR] /usr/local/google/home/deannagarcia/protobuf/java/core/src/test/kotlin/com/google/protobuf/Proto2Test.kt:[459,54] Assignment operators ambiguity: 
+[ERROR] public operator fun <T> Collection<Long!>.plus(element: Long!): List<Long!> defined in kotlin.collections
+[ERROR] public final inline operator fun <E> ExtensionList<Long!, UnittestProto.TestAllExtensions>.plusAssign(value: Long!): Unit defined in protobuf_unittest.TestAllExtensionsKt.Dsl
+[ERROR] /usr/local/google/home/deannagarcia/protobuf/java/core/src/test/kotlin/com/google/protobuf/Proto2Test.kt:[460,55] Assignment operators ambiguity: 
+[ERROR] public operator fun <T> Collection<Int!>.plus(element: Int!): List<Int!> defined in kotlin.collections
+[ERROR] public final inline operator fun <E> ExtensionList<Int!, UnittestProto.TestAllExtensions>.plusAssign(value: Int!): Unit defined in protobuf_unittest.TestAllExtensionsKt.Dsl
+[ERROR] /usr/local/google/home/deannagarcia/protobuf/java/core/src/test/kotlin/com/google/protobuf/Proto2Test.kt:[461,55] Assignment operators ambiguity: 
+[ERROR] public operator fun <T> Collection<Long!>.plus(element: Long!): List<Long!> defined in kotlin.collections
+[ERROR] public final inline operator fun <E> ExtensionList<Long!, UnittestProto.TestAllExtensions>.plusAssign(value: Long!): Unit defined in protobuf_unittest.TestAllExtensionsKt.Dsl
+[ERROR] /usr/local/google/home/deannagarcia/protobuf/java/core/src/test/kotlin/com/google/protobuf/Proto2Test.kt:[462,52] Assignment operators ambiguity: 
+[ERROR] public operator fun <T> Collection<Float!>.plus(element: Float!): List<Float!> defined in kotlin.collections
+[ERROR] public final inline operator fun <E> ExtensionList<Float!, UnittestProto.TestAllExtensions>.plusAssign(value: Float!): Unit defined in protobuf_unittest.TestAllExtensionsKt.Dsl
+[ERROR] /usr/local/google/home/deannagarcia/protobuf/java/core/src/test/kotlin/com/google/protobuf/Proto2Test.kt:[463,53] Assignment operators ambiguity: 
+[ERROR] public operator fun <T> Collection<Double!>.plus(element: Double!): List<Double!> defined in kotlin.collections
+[ERROR] public final inline operator fun <E> ExtensionList<Double!, UnittestProto.TestAllExtensions>.plusAssign(value: Double!): Unit defined in protobuf_unittest.TestAllExtensionsKt.Dsl
+[ERROR] /usr/local/google/home/deannagarcia/protobuf/java/core/src/test/kotlin/com/google/protobuf/Proto2Test.kt:[464,51] Assignment operators ambiguity: 
+[ERROR] public operator fun <T> Collection<Boolean!>.plus(element: Boolean!): List<Boolean!> defined in kotlin.collections
+[ERROR] public final inline operator fun <E> ExtensionList<Boolean!, UnittestProto.TestAllExtensions>.plusAssign(value: Boolean!): Unit defined in protobuf_unittest.TestAllExtensionsKt.Dsl
+[ERROR] /usr/local/google/home/deannagarcia/protobuf/java/core/src/test/kotlin/com/google/protobuf/Proto2Test.kt:[465,53] Assignment operators ambiguity: 
+[ERROR] public operator fun <T> Collection<String!>.plus(element: String!): List<String!> defined in kotlin.collections
+[ERROR] public final inline operator fun <E> ExtensionList<String!, UnittestProto.TestAllExtensions>.plusAssign(value: String!): Unit defined in protobuf_unittest.TestAllExtensionsKt.Dsl
+[ERROR] /usr/local/google/home/deannagarcia/protobuf/java/core/src/test/kotlin/com/google/protobuf/Proto2Test.kt:[466,52] Assignment operators ambiguity: 
+[ERROR] public operator fun <T> Collection<Serializable!>.plus(elements: Iterable<Serializable!>): List<Serializable!> defined in kotlin.collections
+[ERROR] public final inline operator fun <E> ExtensionList<ByteString!, UnittestProto.TestAllExtensions>.plusAssign(value: ByteString!): Unit defined in protobuf_unittest.TestAllExtensionsKt.Dsl
+[ERROR] /usr/local/google/home/deannagarcia/protobuf/java/core/src/test/kotlin/com/google/protobuf/Proto2Test.kt:[467,52] Assignment operators ambiguity: 
+[ERROR] public operator fun <T> Collection<UnittestProto.RepeatedGroup_extension!>.plus(element: UnittestProto.RepeatedGroup_extension!): List<UnittestProto.RepeatedGroup_extension!> defined in kotlin.collections
+[ERROR] public final inline operator fun <E> ExtensionList<UnittestProto.RepeatedGroup_extension!, UnittestProto.TestAllExtensions>.plusAssign(value: UnittestProto.RepeatedGroup_extension!): Unit defined in protobuf_unittest.TestAllExtensionsKt.Dsl
+[ERROR] /usr/local/google/home/deannagarcia/protobuf/java/core/src/test/kotlin/com/google/protobuf/Proto2Test.kt:[468,60] Assignment operators ambiguity: 
+[ERROR] public operator fun <T> Collection<UnittestProto.TestAllTypes.NestedMessage!>.plus(element: UnittestProto.TestAllTypes.NestedMessage!): List<UnittestProto.TestAllTypes.NestedMessage!> defined in kotlin.collections
+[ERROR] public final inline operator fun <E> ExtensionList<UnittestProto.TestAllTypes.NestedMessage!, UnittestProto.TestAllExtensions>.plusAssign(value: UnittestProto.TestAllTypes.NestedMessage!): Unit defined in protobuf_unittest.TestAllExtensionsKt.Dsl
+[ERROR] /usr/local/google/home/deannagarcia/protobuf/java/core/src/test/kotlin/com/google/protobuf/Proto2Test.kt:[470,61] Assignment operators ambiguity: 
+[ERROR] public operator fun <T> Collection<UnittestProto.ForeignMessage!>.plus(element: UnittestProto.ForeignMessage!): List<UnittestProto.ForeignMessage!> defined in kotlin.collections
+[ERROR] public final inline operator fun <E> ExtensionList<UnittestProto.ForeignMessage!, UnittestProto.TestAllExtensions>.plusAssign(value: UnittestProto.ForeignMessage!): Unit defined in protobuf_unittest.TestAllExtensionsKt.Dsl
+[ERROR] /usr/local/google/home/deannagarcia/protobuf/java/core/src/test/kotlin/com/google/protobuf/Proto2Test.kt:[471,60] Assignment operators ambiguity: 
+[ERROR] public operator fun <T> Collection<UnittestImport.ImportMessage!>.plus(element: UnittestImport.ImportMessage!): List<UnittestImport.ImportMessage!> defined in kotlin.collections
+[ERROR] public final inline operator fun <E> ExtensionList<UnittestImport.ImportMessage!, UnittestProto.TestAllExtensions>.plusAssign(value: UnittestImport.ImportMessage!): Unit defined in protobuf_unittest.TestAllExtensionsKt.Dsl
+[ERROR] /usr/local/google/home/deannagarcia/protobuf/java/core/src/test/kotlin/com/google/protobuf/Proto2Test.kt:[473,58] Assignment operators ambiguity: 
+[ERROR] public operator fun <T> Collection<UnittestProto.TestAllTypes.NestedMessage!>.plus(element: UnittestProto.TestAllTypes.NestedMessage!): List<UnittestProto.TestAllTypes.NestedMessage!> defined in kotlin.collections
+[ERROR] public final inline operator fun <E> ExtensionList<UnittestProto.TestAllTypes.NestedMessage!, UnittestProto.TestAllExtensions>.plusAssign(value: UnittestProto.TestAllTypes.NestedMessage!): Unit defined in protobuf_unittest.TestAllExtensionsKt.Dsl
+[ERROR] /usr/local/google/home/deannagarcia/protobuf/java/core/src/test/kotlin/com/google/protobuf/Proto2Test.kt:[475,57] Assignment operators ambiguity: 
+[ERROR] public operator fun <T> Collection<UnittestProto.TestAllTypes.NestedEnum!>.plus(element: UnittestProto.TestAllTypes.NestedEnum!): List<UnittestProto.TestAllTypes.NestedEnum!> defined in kotlin.collections
+[ERROR] public final inline operator fun <E> ExtensionList<UnittestProto.TestAllTypes.NestedEnum!, UnittestProto.TestAllExtensions>.plusAssign(value: UnittestProto.TestAllTypes.NestedEnum!): Unit defined in protobuf_unittest.TestAllExtensionsKt.Dsl
+[ERROR] /usr/local/google/home/deannagarcia/protobuf/java/core/src/test/kotlin/com/google/protobuf/Proto2Test.kt:[476,58] Assignment operators ambiguity: 
+[ERROR] public operator fun <T> Collection<UnittestProto.ForeignEnum!>.plus(element: UnittestProto.ForeignEnum!): List<UnittestProto.ForeignEnum!> defined in kotlin.collections
+[ERROR] public final inline operator fun <E> ExtensionList<UnittestProto.ForeignEnum!, UnittestProto.TestAllExtensions>.plusAssign(value: UnittestProto.ForeignEnum!): Unit defined in protobuf_unittest.TestAllExtensionsKt.Dsl
+[ERROR] /usr/local/google/home/deannagarcia/protobuf/java/core/src/test/kotlin/com/google/protobuf/Proto2Test.kt:[477,57] Assignment operators ambiguity: 
+[ERROR] public operator fun <T> Collection<UnittestImport.ImportEnum!>.plus(element: UnittestImport.ImportEnum!): List<UnittestImport.ImportEnum!> defined in kotlin.collections
+[ERROR] public final inline operator fun <E> ExtensionList<UnittestImport.ImportEnum!, UnittestProto.TestAllExtensions>.plusAssign(value: UnittestImport.ImportEnum!): Unit defined in protobuf_unittest.TestAllExtensionsKt.Dsl
+[ERROR] /usr/local/google/home/deannagarcia/protobuf/java/core/src/test/kotlin/com/google/protobuf/Proto2Test.kt:[478,58] Assignment operators ambiguity: 
+[ERROR] public operator fun <T> Collection<String!>.plus(element: String!): List<String!> defined in kotlin.collections
+[ERROR] public final inline operator fun <E> ExtensionList<String!, UnittestProto.TestAllExtensions>.plusAssign(value: String!): Unit defined in protobuf_unittest.TestAllExtensionsKt.Dsl
+[ERROR] /usr/local/google/home/deannagarcia/protobuf/java/core/src/test/kotlin/com/google/protobuf/Proto2Test.kt:[479,51] Assignment operators ambiguity: 
+[ERROR] public operator fun <T> Collection<String!>.plus(element: String!): List<String!> defined in kotlin.collections
+[ERROR] public final inline operator fun <E> ExtensionList<String!, UnittestProto.TestAllExtensions>.plusAssign(value: String!): Unit defined in protobuf_unittest.TestAllExtensionsKt.Dsl
+[ERROR] -> [Help 1]
+[ERROR] 
+[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
+[ERROR] Re-run Maven using the -X switch to enable full debug logging.
+[ERROR] 
+[ERROR] For more information about the errors and possible solutions, please read the following articles:
+[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoFailureException

java/core/pom.xml

@@ -16,6 +16,10 @@
     efficient yet extensible format.
   </description>
 
+  <properties>
+    <kotlin.version>1.4.31</kotlin.version>
+  </properties>
+
   <dependencies>
     <dependency>
       <groupId>junit</groupId>
@@ -42,6 +46,16 @@
       <artifactId>truth</artifactId>
       <scope>test</scope>
     </dependency>
+    <dependency>
+        <groupId>org.jetbrains.kotlin</groupId>
+        <artifactId>kotlin-stdlib-jdk7</artifactId>
+        <version>${kotlin.version}</version>
+    </dependency>
+    <dependency>
+        <groupId>org.jetbrains.kotlin</groupId>
+        <artifactId>kotlin-reflect</artifactId>
+        <version>${kotlin.version}</version>
+    </dependency>
   </dependencies>
 
   <build>
@@ -141,7 +155,35 @@
           </execution>
         </executions>
       </plugin>
-
+      <plugin>
+        <groupId>org.jetbrains.kotlin</groupId>
+        <artifactId>kotlin-maven-plugin</artifactId>
+        <version>${kotlin.version}</version>
+        <extensions>true</extensions>
+        <executions>
+          <execution>
+            <id>compile</id>
+            <goals> <goal>compile</goal> </goals>
+            <configuration>
+              <sourceDirs>
+                <sourceDir>${project.basedir}/src/main/java</sourceDir>
+                <sourceDir>${project.basedir}/src/main/kotlin</sourceDir>
+              </sourceDirs>
+            </configuration>
+          </execution>
+          <execution>
+            <id>test-compile</id>
+            <goals> <goal>test-compile</goal> </goals>
+            <configuration>
+              <sourceDirs>
+                <sourceDir>${project.basedir}/src/test/java</sourceDir>
+                <sourceDir>${project.basedir}/src/test/kotlin</sourceDir>
+                <sourceDir>${generated.testsources.dir}</sourceDir>
+              </sourceDirs>
+            </configuration>
+          </execution>
+        </executions>
+      </plugin>
       <!-- OSGI bundle configuration -->
       <plugin>
         <groupId>org.apache.felix</groupId>

java/core/src/main/kotlin/com/google/protobuf/DslList.kt

@@ -0,0 +1,27 @@
+package com.google.protobuf.kotlin
+
+/**
+ * A simple wrapper around a [List] with an extra generic parameter that can be used to disambiguate
+ * extension methods.
+ *
+ * <p>This class is used by Kotlin protocol buffer extensions, and its constructor is public only
+ * because generated message code is in a different compilation unit.  Others should not use this
+ * class directly in any way.
+ */
+@Suppress("unused") // the unused type parameter
+class DslList<E, P : DslProxy> @OnlyForUseByGeneratedProtoCode constructor(
+  private val delegate: List<E>
+) : List<E> by delegate {
+  override fun iterator(): Iterator<E> = UnmodifiableIterator(delegate.iterator())
+
+  override fun listIterator(): ListIterator<E> = UnmodifiableListIterator(delegate.listIterator())
+
+  override fun listIterator(index: Int): ListIterator<E> =
+    UnmodifiableListIterator(delegate.listIterator(index))
+
+  override fun equals(other: Any?): Boolean = delegate == other
+
+  override fun hashCode(): Int = delegate.hashCode()
+
+  override fun toString(): String = delegate.toString()
+}

java/core/src/main/kotlin/com/google/protobuf/DslMap.kt

@@ -0,0 +1,30 @@
+package com.google.protobuf.kotlin
+
+/**
+ * A simple wrapper around a [Map] with an extra generic parameter that can be used to disambiguate
+ * extension methods.
+ *
+ * <p>This class is used by Kotlin protocol buffer extensions, and its constructor is public only
+ * because generated message code is in a different compilation unit.  Others should not use this
+ * class directly in any way.
+ */
+@Suppress("unused") // the unused type parameter
+class DslMap<K, V, P : DslProxy> @OnlyForUseByGeneratedProtoCode constructor(
+  private val delegate: Map<K, V>
+) : Map<K, V> by delegate {
+  // We allocate the wrappers on calls to get, not with lazy {...}, because lazy allocates
+  // a few objects up front, and any kind of query operation on this object should be rare.
+
+  override val entries: Set<Map.Entry<K, V>>
+    get() = UnmodifiableMapEntries(delegate.entries)
+  override val keys: Set<K>
+    get() = UnmodifiableSet(delegate.keys)
+  override val values: Collection<V>
+    get() = UnmodifiableCollection(delegate.values)
+
+  override fun equals(other: Any?): Boolean = delegate == other
+
+  override fun hashCode(): Int = delegate.hashCode()
+
+  override fun toString(): String = delegate.toString()
+}

java/core/src/main/kotlin/com/google/protobuf/DslProxy.kt

@@ -0,0 +1,12 @@
+package com.google.protobuf.kotlin
+
+/**
+ * A type meaningful only for its existence, never intended to be instantiated.  For example,
+ * a `DslList<Int, FooProxy>` can be given different extension methods than a
+ * `DslList<Int, BarProxy>`.
+ */
+abstract class DslProxy @OnlyForUseByGeneratedProtoCode protected constructor() {
+  init {
+    throw UnsupportedOperationException("A DslProxy should never be instantiated")
+  }
+}

java/core/src/main/kotlin/com/google/protobuf/ExtendableMessageExtensions.kt

@@ -0,0 +1,26 @@
+package com.google.protobuf.kotlin
+
+import com.google.protobuf.ExtensionLite
+import com.google.protobuf.GeneratedMessage
+
+/** Sets the current value of the proto extension in this builder.*/
+operator fun <
+  M : GeneratedMessage.ExtendableMessage<M>,
+  B : GeneratedMessage.ExtendableBuilder<M, B>,
+  T
+  > B.set(extension: ExtensionLite<M, T>, value: T) {
+  setExtension(extension, value)
+}
+
+/** Gets the current value of the proto extension. */
+operator fun <
+  M : GeneratedMessage.ExtendableMessage<M>,
+  MorBT : GeneratedMessage.ExtendableMessageOrBuilder<M>,
+  T
+  > MorBT.get(extension: ExtensionLite<M, T>): T = getExtension(extension)
+
+/** Returns true if the specified extension is set on this builder. */
+operator fun <
+  M : GeneratedMessage.ExtendableMessage<M>,
+  MorBT : GeneratedMessage.ExtendableMessageOrBuilder<M>
+  > MorBT.contains(extension: ExtensionLite<M, *>): Boolean = hasExtension(extension)

java/core/src/main/kotlin/com/google/protobuf/ExtensionList.kt

@@ -0,0 +1,27 @@
+package com.google.protobuf.kotlin
+
+import com.google.protobuf.ExtensionLite
+import com.google.protobuf.MessageLite
+
+/**
+ * Implementation for ExtensionList and ExtensionListLite.  Like [DslList], represents an
+ * unmodifiable view of a repeated proto field -- in this case, an extension field -- but
+ * supports querying the extension.
+ */
+class ExtensionList<E, M : MessageLite> @OnlyForUseByGeneratedProtoCode constructor(
+  val extension: ExtensionLite<M, List<E>>,
+  @JvmField private val delegate: List<E>
+) : List<E> by delegate {
+  override fun iterator(): Iterator<E> = UnmodifiableIterator(delegate.iterator())
+
+  override fun listIterator(): ListIterator<E> = UnmodifiableListIterator(delegate.listIterator())
+
+  override fun listIterator(index: Int): ListIterator<E> =
+    UnmodifiableListIterator(delegate.listIterator(index))
+
+  override fun equals(other: Any?): Boolean = delegate == other
+
+  override fun hashCode(): Int = delegate.hashCode()
+
+  override fun toString(): String = delegate.toString()
+}

java/core/src/main/kotlin/com/google/protobuf/OnlyForUseByGeneratedProtoCode.kt

@@ -0,0 +1,18 @@
+package com.google.protobuf.kotlin
+
+/**
+ * Opt-in annotation to make it difficult to accidentally use APIs only intended for use by proto
+ * generated code.  See https://kotlinlang.org/docs/reference/opt-in-requirements.html for details
+ * on how this API works.
+ */
+@RequiresOptIn(
+  message =
+    """
+    This API is only intended for use by generated protobuf code, the code generator, and their own
+    tests.  If this does not describe your code, you should not be using this API.
+  """,
+  level = RequiresOptIn.Level.ERROR
+)
+@Retention(AnnotationRetention.BINARY)
+@Target(AnnotationTarget.CONSTRUCTOR, AnnotationTarget.ANNOTATION_CLASS)
+annotation class OnlyForUseByGeneratedProtoCode

java/core/src/main/kotlin/com/google/protobuf/ProtoDslMarker.kt

@@ -0,0 +1,10 @@
+package com.google.protobuf.kotlin
+
+/**
+ * Indicates an API that is part of a DSL to generate protocol buffer messages.
+ */
+@DslMarker
+@Target(AnnotationTarget.CLASS)
+@Retention(AnnotationRetention.BINARY)
+@OnlyForUseByGeneratedProtoCode
+annotation class ProtoDslMarker

java/core/src/main/kotlin/com/google/protobuf/UnmodifiableCollections.kt

@@ -0,0 +1,39 @@
+package com.google.protobuf.kotlin
+
+/** Wraps an [Iterator] and makes it unmodifiable even from Java. */
+internal class UnmodifiableIterator<E>(delegate: Iterator<E>) : Iterator<E> by delegate
+
+/** Wraps a [ListIterator] and makes it unmodifiable even from Java. */
+internal class UnmodifiableListIterator<E>(
+  delegate: ListIterator<E>
+) : ListIterator<E> by delegate
+
+/** Wraps a [Collection] and makes it unmodifiable even from Java. */
+internal open class UnmodifiableCollection<E>(
+  private val delegate: Collection<E>
+) : Collection<E> by delegate {
+  override fun iterator(): Iterator<E> = UnmodifiableIterator(delegate.iterator())
+}
+
+/** Wraps a [Set] and makes it unmodifiable even from Java. */
+internal class UnmodifiableSet<E>(
+  delegate: Collection<E>
+) : UnmodifiableCollection<E>(delegate), Set<E>
+
+/** Wraps a [Map.Entry] and makes it unmodifiable even from Java. */
+internal class UnmodifiableMapEntry<K, V>(delegate: Map.Entry<K, V>) : Map.Entry<K, V> by delegate
+
+/** Wraps a [Set] of map entries and makes it unmodifiable even from Java. */
+internal class UnmodifiableMapEntries<K, V>(
+  private val delegate: Set<Map.Entry<K, V>>
+) : UnmodifiableCollection<Map.Entry<K, V>>(delegate), Set<Map.Entry<K, V>> {
+
+  // Is this overkill? Probably.
+
+  override fun iterator(): Iterator<Map.Entry<K, V>> {
+    val itr = delegate.iterator()
+    return object : Iterator<Map.Entry<K, V>> by itr {
+      override fun next(): Map.Entry<K, V> = UnmodifiableMapEntry(itr.next())
+    }
+  }
+}

java/core/src/test/kotlin/com/google/protobuf/Proto2Test.kt

@@ -3,39 +3,39 @@ package com.google.protobuf.kotlin
 import com.google.common.truth.Truth.assertThat
 import com.google.protobuf.TestUtil
 import com.google.protobuf.TestUtil.toBytes
-import com.google.protobuf.kotlin.generator.EvilNamesProto2OuterClass.EvilNamesProto2
-import com.google.protobuf.kotlin.generator.EvilNamesProto2OuterClass.HardKeywordsAllTypes
-import com.google.protobuf.kotlin.generator.EvilNamesProto2OuterClass.Interface
-import com.google.protobuf.kotlin.generator.HardKeywordsAllTypesKt
-import com.google.protobuf.kotlin.generator.evilNamesProto2
-import com.google.protobuf.kotlin.generator.hardKeywordsAllTypes
-import com.google.protobuf.kotlin.generator.interface_
+import evil_names_proto2.EvilNamesProto2OuterClass.EvilNamesProto2
+import evil_names_proto2.EvilNamesProto2OuterClass.HardKeywordsAllTypes
+import evil_names_proto2.EvilNamesProto2OuterClass.Interface
+import evil_names_proto2.HardKeywordsAllTypesKt
+import evil_names_proto2.evilNamesProto2
+import evil_names_proto2.hardKeywordsAllTypes
+import evil_names_proto2.interface_
 import com.google.protobuf.test.UnittestImport.ImportEnum
 import com.google.protobuf.test.UnittestImport.ImportMessage
 import com.google.protobuf.test.UnittestImportPublic.PublicImportMessage
-import com.google.protos.proto2_unittest.MapProto2Unittest.Proto2MapEnum
-import com.google.protos.proto2_unittest.MapProto2Unittest.TestEnumMap
-import com.google.protos.proto2_unittest.MapProto2Unittest.TestIntIntMap
-import com.google.protos.proto2_unittest.MapProto2Unittest.TestMaps
-import com.google.protos.proto2_unittest.TestAllTypesKt
-import com.google.protos.proto2_unittest.TestAllTypesKt.nestedMessage
-import com.google.protos.proto2_unittest.UnittestProto
-import com.google.protos.proto2_unittest.UnittestProto.ForeignEnum
-import com.google.protos.proto2_unittest.UnittestProto.TestAllTypes
-import com.google.protos.proto2_unittest.UnittestProto.TestAllTypes.NestedEnum
-import com.google.protos.proto2_unittest.UnittestProto.TestEmptyMessage
-import com.google.protos.proto2_unittest.UnittestProto.TestEmptyMessageWithExtensions
-import com.google.protos.proto2_unittest.copy
-import com.google.protos.proto2_unittest.foreignMessage
-import com.google.protos.proto2_unittest.optionalGroupExtension
-import com.google.protos.proto2_unittest.repeatedGroupExtension
-import com.google.protos.proto2_unittest.testAllExtensions
-import com.google.protos.proto2_unittest.testAllTypes
-import com.google.protos.proto2_unittest.testEmptyMessage
-import com.google.protos.proto2_unittest.testEmptyMessageWithExtensions
-import com.google.protos.proto2_unittest.testEnumMap
-import com.google.protos.proto2_unittest.testIntIntMap
-import com.google.protos.proto2_unittest.testMaps
+import protobuf_unittest.MapProto2Unittest.Proto2MapEnum
+import protobuf_unittest.MapProto2Unittest.TestEnumMap
+import protobuf_unittest.MapProto2Unittest.TestIntIntMap
+import protobuf_unittest.MapProto2Unittest.TestMaps
+import protobuf_unittest.TestAllTypesKt
+import protobuf_unittest.TestAllTypesKt.nestedMessage
+import protobuf_unittest.UnittestProto
+import protobuf_unittest.UnittestProto.ForeignEnum
+import protobuf_unittest.UnittestProto.TestAllTypes
+import protobuf_unittest.UnittestProto.TestAllTypes.NestedEnum
+import protobuf_unittest.UnittestProto.TestEmptyMessage
+import protobuf_unittest.UnittestProto.TestEmptyMessageWithExtensions
+import protobuf_unittest.copy
+import protobuf_unittest.foreignMessage
+import protobuf_unittest.optionalGroupExtension
+import protobuf_unittest.repeatedGroupExtension
+import protobuf_unittest.testAllExtensions
+import protobuf_unittest.testAllTypes
+import protobuf_unittest.testEmptyMessage
+import protobuf_unittest.testEmptyMessageWithExtensions
+import protobuf_unittest.testEnumMap
+import protobuf_unittest.testIntIntMap
+import protobuf_unittest.testMaps
 import org.junit.Test
 import org.junit.runner.RunWith
 import org.junit.runners.JUnit4
@@ -44,6 +44,7 @@ import org.junit.runners.JUnit4
 class Proto2Test {
   @Test
   fun testSetters() {
+    val myInt: Int = 301
     assertThat(
       testAllTypes {
         optionalInt32 = 101
@@ -102,7 +103,7 @@ class Proto2Test {
         repeatedImportEnum.add(ImportEnum.IMPORT_BAR)
         repeatedStringPiece.add("224")
         repeatedCord.add("225")
-        repeatedInt32 += 301
+        repeatedInt32 += myInt
         repeatedInt64 += 302
         repeatedUint32 += 303
         repeatedUint64 += 304
@@ -529,95 +530,6 @@ class Proto2Test {
     }
   }
 
-  @Test
-  fun testRepeatedExtensionGettersAndSetters() {
-    testAllExtensions {
-      this[UnittestProto.repeatedInt32Extension].addAll(listOf(1, 2))
-      assertThat(this[UnittestProto.repeatedInt32Extension]).isEqualTo(listOf(1, 2))
-      this[UnittestProto.repeatedInt32Extension] += listOf(3, 4)
-      assertThat(this[UnittestProto.repeatedInt32Extension]).isEqualTo(listOf(1, 2, 3, 4))
-      this[UnittestProto.repeatedInt32Extension][0] = 5
-      assertThat(this[UnittestProto.repeatedInt32Extension]).isEqualTo(listOf(5, 2, 3, 4))
-
-      this[UnittestProto.repeatedStringExtension].addAll(listOf("1", "2"))
-      assertThat(this[UnittestProto.repeatedStringExtension]).isEqualTo(listOf("1", "2"))
-      this[UnittestProto.repeatedStringExtension] += listOf("3", "4")
-      assertThat(this[UnittestProto.repeatedStringExtension]).isEqualTo(listOf("1", "2", "3", "4"))
-      this[UnittestProto.repeatedStringExtension][0] = "5"
-      assertThat(this[UnittestProto.repeatedStringExtension]).isEqualTo(listOf("5", "2", "3", "4"))
-
-      this[UnittestProto.repeatedGroupExtension].addAll(
-        listOf(
-          repeatedGroupExtension { a = 1 },
-          repeatedGroupExtension { a = 2 }
-        )
-      )
-      assertThat(this[UnittestProto.repeatedGroupExtension]).isEqualTo(
-        listOf(
-          repeatedGroupExtension { a = 1 },
-          repeatedGroupExtension { a = 2 }
-        )
-      )
-      this[UnittestProto.repeatedGroupExtension] +=
-        listOf(
-          repeatedGroupExtension { a = 3 },
-          repeatedGroupExtension { a = 4 }
-        )
-      assertThat(this[UnittestProto.repeatedGroupExtension]).isEqualTo(
-        listOf(
-          repeatedGroupExtension { a = 1 },
-          repeatedGroupExtension { a = 2 },
-          repeatedGroupExtension { a = 3 },
-          repeatedGroupExtension { a = 4 }
-        )
-      )
-      this[UnittestProto.repeatedGroupExtension][0] = repeatedGroupExtension { a = 5 }
-      assertThat(this[UnittestProto.repeatedGroupExtension]).isEqualTo(
-        listOf(
-          repeatedGroupExtension { a = 5 },
-          repeatedGroupExtension { a = 2 },
-          repeatedGroupExtension { a = 3 },
-          repeatedGroupExtension { a = 4 }
-        )
-      )
-
-      this[UnittestProto.repeatedNestedMessageExtension].addAll(
-        listOf(nestedMessage { bb = 1 }, nestedMessage { bb = 2 })
-      )
-      assertThat(this[UnittestProto.repeatedNestedMessageExtension]).isEqualTo(
-        listOf(nestedMessage { bb = 1 }, nestedMessage { bb = 2 })
-      )
-      this[UnittestProto.repeatedNestedMessageExtension] +=
-        listOf(nestedMessage { bb = 3 }, nestedMessage { bb = 4 })
-      assertThat(this[UnittestProto.repeatedNestedMessageExtension]).isEqualTo(
-        listOf(
-          nestedMessage { bb = 1 },
-          nestedMessage { bb = 2 },
-          nestedMessage { bb = 3 },
-          nestedMessage { bb = 4 }
-        )
-      )
-      this[UnittestProto.repeatedNestedMessageExtension][0] = nestedMessage { bb = 5 }
-      assertThat(this[UnittestProto.repeatedNestedMessageExtension]).isEqualTo(
-        listOf(
-          nestedMessage { bb = 5 },
-          nestedMessage { bb = 2 },
-          nestedMessage { bb = 3 },
-          nestedMessage { bb = 4 }
-        )
-      )
-
-      this[UnittestProto.repeatedNestedEnumExtension]
-        .addAll(listOf(NestedEnum.FOO, NestedEnum.BAR))
-      assertThat(this[UnittestProto.repeatedNestedEnumExtension])
-        .isEqualTo(listOf(NestedEnum.FOO, NestedEnum.BAR))
-      this[UnittestProto.repeatedNestedEnumExtension] += listOf(NestedEnum.BAZ, NestedEnum.FOO)
-      assertThat(this[UnittestProto.repeatedNestedEnumExtension]).isEqualTo(
-        listOf(NestedEnum.FOO, NestedEnum.BAR, NestedEnum.BAZ, NestedEnum.FOO)
-      )
-    }
-  }
-
   @Test
   fun testExtensionContains() {
     testAllExtensions {

java/core/src/test/proto/com/google/protobuf/evil_names_proto2.proto

@@ -1,9 +1,8 @@
-// LINT: LEGACY_NAMES
 syntax = "proto2";
 
-package protobuf.kotlin.generator;
+package evil_names_proto2;
 
-option java_package = "com.google.protobuf.kotlin.generator";
+option java_package = "evil_names_proto2";
 
 message EvilNamesProto2 {
   optional bool initialized = 1;

java/lite/generate-test-sources-build.xml

@@ -48,4 +48,11 @@
         <arg value="${protobuf.basedir}/java/core/${test.proto.dir}/com/google/protobuf/test_check_utf8_size.proto"/>
         <arg value="${protobuf.basedir}/java/core/${test.proto.dir}/com/google/protobuf/wrappers_test.proto"/>
     </exec>
+    <exec executable="${protoc}">
+      <arg value="--kotlin_out=lite:${generated.testsources.dir}"/>
+      <arg value="--proto_path=${protobuf.source.dir}"/>
+      <arg value="--proto_path=${protobuf.basedir}/java/core/${test.proto.dir}"/>
+      <arg value="${protobuf.source.dir}/google/protobuf/unittest.proto"/>
+      <arg value="${protobuf.source.dir}/google/protobuf/unittest_proto3.proto"/>
+    </exec>
 </project>

java/lite/pom.xml

@@ -323,6 +323,26 @@
         </executions>
       </plugin>
 
+      <plugin>
+        <groupId>org.jetbrains.kotlin</groupId>
+        <artifactId>kotlin-maven-plugin</artifactId>
+        <extensions>true</extensions>
+        <executions>
+          <execution>
+            <id>test-compile</id>
+            <goals> <goal>test-compile</goal> </goals>
+            <configuration>
+              <sourceDirs>
+                <sourceDir>${project.basedir}/src/test/java</sourceDir>
+                <sourceDir>${project.basedir}/src/test/kotlin</sourceDir>
+                <sourceDir>${generated.testsources.dir}</sourceDir>
+              </sourceDirs>
+            </configuration>
+          </execution>
+        </executions>
+      </plugin>
+
+
       <!-- OSGI bundle configuration -->
       <plugin>
         <groupId>org.apache.felix</groupId>

java/lite/target/antrun/build-main.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+<project name="maven-antrun-" default="main"  >
+<target name="main">
+  <ant antfile="process-lite-sources-build.xml"/>
+</target>
+</project>