Load annotations on properties declared in traits

compiler/backend/src/org/jetbrains/jet/codegen/ClassBodyCodegen.java

@@ -35,6 +35,7 @@ import java.util.List;
 import static org.jetbrains.asm4.Opcodes.ACC_STATIC;
 import static org.jetbrains.asm4.Opcodes.RETURN;
 import static org.jetbrains.jet.codegen.binding.CodegenBinding.enumEntryNeedSubclass;
+import static org.jetbrains.jet.lang.resolve.DescriptorUtils.isTopLevelOrInnerClass;
 
 public abstract class ClassBodyCodegen extends MemberCodegen {
     protected final JetClassOrObject myClass;
@@ -71,13 +72,14 @@ public abstract class ClassBodyCodegen extends MemberCodegen {
 
         generateStaticInitializer();
 
-        generateKotlinAnnotation();
+        if (state.getClassBuilderMode() == ClassBuilderMode.FULL && isTopLevelOrInnerClass(descriptor)) {
+            generateKotlinAnnotation();
+        }
     }
 
     protected abstract void generateDeclaration();
 
-    protected void generateKotlinAnnotation() {
+    protected abstract void generateKotlinAnnotation();
-    }
 
     protected abstract void generateSyntheticParts();
 

compiler/backend/src/org/jetbrains/jet/codegen/FunctionCodegen.java

@@ -111,7 +111,7 @@ public class FunctionCodegen extends ParentCodegenAwareImpl {
 
         if (owner instanceof NamespaceFacadeContext) {
             Type ownerType = ((NamespaceFacadeContext) owner).getDelegateToClassType();
-            v.getMemberMap().recordSrcClassNameForCallable(functionDescriptor, shortNameByAsmType(ownerType));
+            v.getMemberMap().recordImplClassNameForCallable(functionDescriptor, shortNameByAsmType(ownerType));
         }
         else {
             v.getMemberMap().recordMethodOfDescriptor(functionDescriptor, asmMethod);

compiler/backend/src/org/jetbrains/jet/codegen/ImplementationBodyCodegen.java

@@ -213,12 +213,6 @@ public class ImplementationBodyCodegen extends ClassBodyCodegen {
 
     @Override
     protected void generateKotlinAnnotation() {
-        if (state.getClassBuilderMode() != ClassBuilderMode.FULL) {
-            return;
-        }
-
-        if (!isTopLevelOrInnerClass(descriptor)) return;
-
         DescriptorSerializer serializer = new DescriptorSerializer(new JavaSerializerExtension(v.getMemberMap()));
 
         ProtoBuf.Class classProto = serializer.classProto(descriptor).build();

compiler/backend/src/org/jetbrains/jet/codegen/JavaSerializerExtension.java

@@ -45,7 +45,7 @@ public class JavaSerializerExtension extends SerializerExtension {
             @NotNull NameTable nameTable
     ) {
         saveSignature(callable, proto, nameTable);
-        saveSrcClassName(callable, proto, nameTable);
+        saveImplClassName(callable, proto, nameTable);
     }
 
     private void saveSignature(
@@ -91,14 +91,14 @@ public class JavaSerializerExtension extends SerializerExtension {
         }
     }
 
-    private void saveSrcClassName(
+    private void saveImplClassName(
             @NotNull CallableMemberDescriptor callable,
             @NotNull ProtoBuf.Callable.Builder proto,
             @NotNull NameTable nameTable
     ) {
-        String name = memberMap.getSrcClassNameOfCallable(callable);
+        String name = memberMap.getImplClassNameOfCallable(callable);
         if (name != null) {
-            proto.setExtension(JavaProtoBuf.srcClassName, nameTable.getSimpleNameIndex(Name.identifier(name)));
+            proto.setExtension(JavaProtoBuf.implClassName, nameTable.getSimpleNameIndex(Name.identifier(name)));
         }
     }
 

compiler/backend/src/org/jetbrains/jet/codegen/MemberMap.java

@@ -31,7 +31,7 @@ public final class MemberMap {
     private final Map<FunctionDescriptor, Method> methodForFunction = new HashMap<FunctionDescriptor, Method>();
     private final Map<PropertyDescriptor, Pair<Type, String>> fieldForProperty = new HashMap<PropertyDescriptor, Pair<Type, String>>();
     private final Map<PropertyDescriptor, Method> syntheticMethodForProperty = new HashMap<PropertyDescriptor, Method>();
-    private final Map<CallableMemberDescriptor, String> srcClassNameForCallable = new HashMap<CallableMemberDescriptor, String>();
+    private final Map<CallableMemberDescriptor, String> implClassNameForCallable = new HashMap<CallableMemberDescriptor, String>();
     private final Set<PropertyDescriptor> staticFieldInOuterClass = new HashSet<PropertyDescriptor>();
 
     @NotNull
@@ -50,8 +50,8 @@ public final class MemberMap {
                 result.recordSyntheticMethodOfProperty(entry.getKey(), entry.getValue());
             }
 
-            for (Map.Entry<CallableMemberDescriptor, String> entry : map.srcClassNameForCallable.entrySet()) {
+            for (Map.Entry<CallableMemberDescriptor, String> entry : map.implClassNameForCallable.entrySet()) {
-                result.recordSrcClassNameForCallable(entry.getKey(), entry.getValue());
+                result.recordImplClassNameForCallable(entry.getKey(), entry.getValue());
             }
 
             for (PropertyDescriptor property : map.staticFieldInOuterClass) {
@@ -77,8 +77,8 @@ public final class MemberMap {
         assert old == null : "Duplicate synthetic method for property: " + descriptor + "; " + old;
     }
 
-    public void recordSrcClassNameForCallable(@NotNull CallableMemberDescriptor descriptor, @NotNull String name) {
+    public void recordImplClassNameForCallable(@NotNull CallableMemberDescriptor descriptor, @NotNull String name) {
-        String old = srcClassNameForCallable.put(descriptor, name);
+        String old = implClassNameForCallable.put(descriptor, name);
         assert old == null : "Duplicate src class name for callable: " + descriptor + "; " + old;
     }
 
@@ -103,8 +103,8 @@ public final class MemberMap {
     }
 
     @Nullable
-    public String getSrcClassNameOfCallable(@NotNull CallableMemberDescriptor descriptor) {
+    public String getImplClassNameOfCallable(@NotNull CallableMemberDescriptor descriptor) {
-        return srcClassNameForCallable.get(descriptor);
+        return implClassNameForCallable.get(descriptor);
     }
 
     public boolean isStaticFieldInOuterClass(@NotNull PropertyDescriptor property) {
@@ -116,6 +116,6 @@ public final class MemberMap {
         return "Functions: " + methodForFunction.size() +
                ", fields: " + fieldForProperty.size() +
                ", synthetic methods: " + syntheticMethodForProperty.size() +
-               ", src class names: " + srcClassNameForCallable.size();
+               ", impl class names: " + implClassNameForCallable.size();
     }
 }

compiler/backend/src/org/jetbrains/jet/codegen/PropertyCodegen.java

@@ -92,7 +92,7 @@ public class PropertyCodegen extends GenerationStateAware {
 
         if (context instanceof NamespaceFacadeContext) {
             Type ownerType = ((NamespaceFacadeContext) context).getDelegateToClassType();
-            v.getMemberMap().recordSrcClassNameForCallable(propertyDescriptor, shortNameByAsmType(ownerType));
+            v.getMemberMap().recordImplClassNameForCallable(propertyDescriptor, shortNameByAsmType(ownerType));
         }
         else if (kind != OwnerKind.TRAIT_IMPL) {
             generateBackingField(p, propertyDescriptor);
@@ -142,11 +142,16 @@ public class PropertyCodegen extends GenerationStateAware {
             AnnotationCodegen.forField(fieldVisitor, typeMapper).genAnnotations(propertyDescriptor);
         }
         else if (!propertyDescriptor.getAnnotations().isEmpty()) {
-            if (!isTrait(context.getContextDescriptor())) {
+            Method method = getSyntheticMethodSignature(typeMapper, propertyDescriptor);
-                Method method = getSyntheticMethodSignature(typeMapper, propertyDescriptor);
+            DeclarationDescriptor descriptor = context.getContextDescriptor();
-                generateSyntheticMethodForAnnotatedProperty(v, typeMapper, propertyDescriptor, method);
+            if (isTrait(descriptor)) {
-                v.getMemberMap().recordSyntheticMethodOfProperty(propertyDescriptor, method);
+                Type tImplType = typeMapper.mapTraitImpl((ClassDescriptor) descriptor);
+                v.getMemberMap().recordImplClassNameForCallable(propertyDescriptor, shortNameByAsmType(tImplType));
             }
+            else {
+                generateSyntheticMethodForAnnotatedProperty(v, typeMapper, propertyDescriptor, method);
+            }
+            v.getMemberMap().recordSyntheticMethodOfProperty(propertyDescriptor, method);
         }
     }
 

compiler/backend/src/org/jetbrains/jet/codegen/TraitImplBodyCodegen.java

@@ -18,6 +18,7 @@ package org.jetbrains.jet.codegen;
 
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
+import org.jetbrains.asm4.AnnotationVisitor;
 import org.jetbrains.asm4.commons.Method;
 import org.jetbrains.jet.codegen.context.ClassContext;
 import org.jetbrains.jet.codegen.state.GenerationState;
@@ -27,8 +28,11 @@ import org.jetbrains.jet.lang.psi.JetClassOrObject;
 import org.jetbrains.jet.lang.psi.JetDeclaration;
 import org.jetbrains.jet.lang.psi.JetProperty;
 import org.jetbrains.jet.lang.resolve.BindingContext;
+import org.jetbrains.jet.lang.resolve.java.JvmAbi;
+import org.jetbrains.jet.lang.resolve.java.JvmAnnotationNames;
 
 import static org.jetbrains.asm4.Opcodes.*;
+import static org.jetbrains.jet.codegen.AsmUtil.asmDescByFqNameWithoutInnerClasses;
 
 public class TraitImplBodyCodegen extends ClassBodyCodegen {
 
@@ -54,6 +58,14 @@ public class TraitImplBodyCodegen extends ClassBodyCodegen {
         v.visitSource(myClass.getContainingFile().getName(), null);
     }
 
+    @Override
+    protected void generateKotlinAnnotation() {
+        AnnotationVisitor av =
+                v.getVisitor().visitAnnotation(asmDescByFqNameWithoutInnerClasses(JvmAnnotationNames.KOTLIN_TRAIT_IMPL), true);
+        av.visit(JvmAnnotationNames.ABI_VERSION_FIELD_NAME, JvmAbi.VERSION);
+        av.visitEnd();
+    }
+
     @Override
     protected void generateSyntheticParts() {
         generateSyntheticMethodsForAnnotatedProperties();

compiler/testData/loadKotlin/annotations/propertiesWithoutBackingFields/NestedTrait.kt

@@ -0,0 +1,9 @@
+package test
+
+annotation class Anno
+
+class Class {
+    trait Trait {
+        [Anno] val property: Int
+    }
+}

compiler/testData/loadKotlin/annotations/propertiesWithoutBackingFields/NestedTrait.txt

@@ -0,0 +1,14 @@
+package test
+
+internal final annotation class Anno : jet.Annotation {
+    /*primary*/ public constructor Anno()
+}
+
+internal final class Class {
+    /*primary*/ public constructor Class()
+    
+    internal trait Trait {
+        test.Anno() internal abstract val property: jet.Int
+            internal abstract fun <get-property>(): jet.Int
+    }
+}

compiler/testData/loadKotlin/annotations/propertiesWithoutBackingFields/Trait.kt

@@ -0,0 +1,7 @@
+package test
+
+annotation class Anno
+
+trait Trait {
+    [Anno] val property: Int
+}

compiler/testData/loadKotlin/annotations/propertiesWithoutBackingFields/Trait.txt

@@ -0,0 +1,10 @@
+package test
+
+internal final annotation class Anno : jet.Annotation {
+    /*primary*/ public constructor Anno()
+}
+
+internal trait Trait {
+    test.Anno() internal abstract val property: jet.Int
+        internal abstract fun <get-property>(): jet.Int
+}

compiler/testData/loadKotlin/annotations/propertiesWithoutBackingFields/TraitClassObject.kt

@@ -0,0 +1,10 @@
+package test
+
+annotation class Anno
+
+trait Trait {
+    class object {
+        [Anno] val property: Int
+            get() = 42
+    }
+}

compiler/testData/loadKotlin/annotations/propertiesWithoutBackingFields/TraitClassObject.txt

@@ -0,0 +1,14 @@
+package test
+
+internal final annotation class Anno : jet.Annotation {
+    /*primary*/ public constructor Anno()
+}
+
+internal trait Trait {
+    
+    internal class object <class-object-for-Trait> {
+        /*primary*/ private constructor <class-object-for-Trait>()
+        test.Anno() internal final val property: jet.Int
+            internal final fun <get-property>(): jet.Int
+    }
+}

compiler/tests/org/jetbrains/jet/jvm/compiler/LoadCompiledKotlinTestGenerated.java

@@ -209,11 +209,26 @@ public class LoadCompiledKotlinTestGenerated extends AbstractLoadCompiledKotlinT
                 doTestWithAccessors("compiler/testData/loadKotlin/annotations/propertiesWithoutBackingFields/ExtensionsWithSameNamePackage.kt");
             }
             
+            @TestMetadata("NestedTrait.kt")
+            public void testNestedTrait() throws Exception {
+                doTestWithAccessors("compiler/testData/loadKotlin/annotations/propertiesWithoutBackingFields/NestedTrait.kt");
+            }
+            
             @TestMetadata("TopLevel.kt")
             public void testTopLevel() throws Exception {
                 doTestWithAccessors("compiler/testData/loadKotlin/annotations/propertiesWithoutBackingFields/TopLevel.kt");
             }
             
+            @TestMetadata("Trait.kt")
+            public void testTrait() throws Exception {
+                doTestWithAccessors("compiler/testData/loadKotlin/annotations/propertiesWithoutBackingFields/Trait.kt");
+            }
+            
+            @TestMetadata("TraitClassObject.kt")
+            public void testTraitClassObject() throws Exception {
+                doTestWithAccessors("compiler/testData/loadKotlin/annotations/propertiesWithoutBackingFields/TraitClassObject.kt");
+            }
+            
         }
         
         public static Test innerSuite() {

compiler/tests/org/jetbrains/jet/lang/resolve/lazy/LazyResolveNamespaceComparingTestGenerated.java

@@ -211,11 +211,26 @@ public class LazyResolveNamespaceComparingTestGenerated extends AbstractLazyReso
                     doTestCheckingPrimaryConstructorsAndAccessors("compiler/testData/loadKotlin/annotations/propertiesWithoutBackingFields/ExtensionsWithSameNamePackage.kt");
                 }
                 
+                @TestMetadata("NestedTrait.kt")
+                public void testNestedTrait() throws Exception {
+                    doTestCheckingPrimaryConstructorsAndAccessors("compiler/testData/loadKotlin/annotations/propertiesWithoutBackingFields/NestedTrait.kt");
+                }
+                
                 @TestMetadata("TopLevel.kt")
                 public void testTopLevel() throws Exception {
                     doTestCheckingPrimaryConstructorsAndAccessors("compiler/testData/loadKotlin/annotations/propertiesWithoutBackingFields/TopLevel.kt");
                 }
                 
+                @TestMetadata("Trait.kt")
+                public void testTrait() throws Exception {
+                    doTestCheckingPrimaryConstructorsAndAccessors("compiler/testData/loadKotlin/annotations/propertiesWithoutBackingFields/Trait.kt");
+                }
+                
+                @TestMetadata("TraitClassObject.kt")
+                public void testTraitClassObject() throws Exception {
+                    doTestCheckingPrimaryConstructorsAndAccessors("compiler/testData/loadKotlin/annotations/propertiesWithoutBackingFields/TraitClassObject.kt");
+                }
+                
             }
             
             public static Test innerSuite() {

core/descriptor.loader.java/src/org/jetbrains/jet/lang/resolve/java/JvmAnnotationNames.java

@@ -19,6 +19,7 @@ package org.jetbrains.jet.lang.resolve.java;
 import jet.KotlinClass;
 import jet.KotlinPackage;
 import jet.KotlinPackageFragment;
+import jet.KotlinTraitImpl;
 import org.jetbrains.jet.lang.resolve.name.FqName;
 
 import static org.jetbrains.jet.lang.resolve.java.resolver.DescriptorResolverUtils.fqNameByClass;
@@ -30,6 +31,8 @@ public final class JvmAnnotationNames {
 
     public static final FqName KOTLIN_PACKAGE_FRAGMENT = fqNameByClass(KotlinPackageFragment.class);
 
+    public static final FqName KOTLIN_TRAIT_IMPL = fqNameByClass(KotlinTraitImpl.class);
+
     public static final String ABI_VERSION_FIELD_NAME = "abiVersion";
 
     public static final String DATA_FIELD_NAME = "data";

core/descriptor.loader.java/src/org/jetbrains/jet/lang/resolve/kotlin/AnnotationDescriptorDeserializer.java

@@ -47,6 +47,8 @@ import javax.inject.Inject;
 import java.io.IOException;
 import java.util.*;
 
+import static org.jetbrains.jet.lang.resolve.DescriptorUtils.isClassObject;
+import static org.jetbrains.jet.lang.resolve.DescriptorUtils.isTrait;
 import static org.jetbrains.jet.lang.resolve.java.DescriptorSearchRule.IGNORE_KOTLIN_SOURCES;
 import static org.jetbrains.jet.lang.resolve.kotlin.DeserializedResolverUtils.kotlinFqNameToJavaFqName;
 import static org.jetbrains.jet.lang.resolve.kotlin.DeserializedResolverUtils.naiveKotlinFqName;
@@ -231,7 +233,7 @@ public class AnnotationDescriptorDeserializer implements AnnotationDeserializer
         MemberSignature signature = getCallableSignature(proto, nameResolver, kind);
         if (signature == null) return Collections.emptyList();
 
-        KotlinJvmBinaryClass kotlinClass = findClassWithMemberAnnotations(container, proto, nameResolver);
+        KotlinJvmBinaryClass kotlinClass = findClassWithMemberAnnotations(container, proto, nameResolver, kind);
         if (kotlinClass == null) {
             errorReporter.reportAnnotationLoadingError("Kotlin class for loading member annotations is not found: " + container, null);
             return Collections.emptyList();
@@ -245,33 +247,42 @@ public class AnnotationDescriptorDeserializer implements AnnotationDeserializer
     private KotlinJvmBinaryClass findClassWithMemberAnnotations(
             @NotNull ClassOrNamespaceDescriptor container,
             @NotNull ProtoBuf.Callable proto,
-            @NotNull NameResolver nameResolver
+            @NotNull NameResolver nameResolver,
+            @NotNull AnnotatedCallableKind kind
     ) {
         if (container instanceof NamespaceDescriptor) {
-            Name name = loadSrcClassName(proto, nameResolver);
+            return loadPackageFragmentClassFqName((NamespaceDescriptor) container, proto, nameResolver);
-            if (name != null) {
+        }
-                return kotlinClassFinder.find(getSrcClassFqName((NamespaceDescriptor) container, name));
+        else if (isClassObject(container) && isStaticFieldInOuter(proto)) {
+            // Backing fields of properties of a class object are generated in the outer class
+            return findKotlinClassByDescriptor((ClassOrNamespaceDescriptor) container.getContainingDeclaration());
+        }
+        else if (isTrait(container) && kind == AnnotatedCallableKind.PROPERTY) {
+            NamespaceDescriptor containingPackage = DescriptorUtils.getParentOfType(container, NamespaceDescriptor.class);
+            assert containingPackage != null : "Trait must have a namespace among his parents: " + container;
+
+            if (proto.hasExtension(JavaProtoBuf.implClassName)) {
+                Name tImplName = nameResolver.getName(proto.getExtension(JavaProtoBuf.implClassName));
+                return kotlinClassFinder.find(containingPackage.getFqName().child(tImplName));
             }
             return null;
         }
-        else if (container instanceof ClassDescriptor && ((ClassDescriptor) container).getKind() == ClassKind.CLASS_OBJECT) {
-            // Backing fields of properties of a class object are generated in the outer class
-            if (isStaticFieldInOuter(proto)) {
-                return findKotlinClassByDescriptor((ClassOrNamespaceDescriptor) container.getContainingDeclaration());
-            }
-        }
 
         return findKotlinClassByDescriptor(container);
     }
 
-    @NotNull
-    private static FqName getSrcClassFqName(@NotNull NamespaceDescriptor container, @NotNull Name name) {
-        return PackageClassUtils.getPackageClassFqName(DescriptorUtils.getFQName(container).toSafe()).parent().child(name);
-    }
-
     @Nullable
-    private static Name loadSrcClassName(@NotNull ProtoBuf.Callable proto, @NotNull NameResolver nameResolver) {
+    private KotlinJvmBinaryClass loadPackageFragmentClassFqName(
-        return proto.hasExtension(JavaProtoBuf.srcClassName) ? nameResolver.getName(proto.getExtension(JavaProtoBuf.srcClassName)) : null;
+            @NotNull NamespaceDescriptor container,
+            @NotNull ProtoBuf.Callable proto,
+            @NotNull NameResolver nameResolver
+    ) {
+        if (proto.hasExtension(JavaProtoBuf.implClassName)) {
+            Name name = nameResolver.getName(proto.getExtension(JavaProtoBuf.implClassName));
+            FqName fqName = PackageClassUtils.getPackageClassFqName(container.getFqName()).parent().child(name);
+            return kotlinClassFinder.find(fqName);
+        }
+        return null;
     }
 
     private static boolean isStaticFieldInOuter(@NotNull ProtoBuf.Callable proto) {

core/descriptor.loader.java/src/org/jetbrains/jet/lang/resolve/kotlin/header/ReadKotlinClassHeaderAnnotationVisitor.java

@@ -38,6 +38,7 @@ import static org.jetbrains.jet.lang.resolve.kotlin.KotlinJvmBinaryClass.Annotat
         CLASS(JvmAnnotationNames.KOTLIN_CLASS),
         PACKAGE(JvmAnnotationNames.KOTLIN_PACKAGE),
         PACKAGE_FRAGMENT(JvmAnnotationNames.KOTLIN_PACKAGE_FRAGMENT),
+        TRAIT_IMPL(JvmAnnotationNames.KOTLIN_TRAIT_IMPL),
         OLD_CLASS(JvmAnnotationNames.OLD_JET_CLASS_ANNOTATION),
         OLD_PACKAGE(JvmAnnotationNames.OLD_JET_PACKAGE_CLASS_ANNOTATION);
 
@@ -92,6 +93,8 @@ import static org.jetbrains.jet.lang.resolve.kotlin.KotlinJvmBinaryClass.Annotat
                 return serializedDataHeader(SerializedDataHeader.Kind.PACKAGE);
             case PACKAGE_FRAGMENT:
                 return new PackageFragmentClassHeader(version);
+            case TRAIT_IMPL:
+                return new TraitImplClassHeader(version);
             default:
                 throw new UnsupportedOperationException("Unknown compatible HeaderType: " + foundType);
         }
@@ -123,8 +126,8 @@ import static org.jetbrains.jet.lang.resolve.kotlin.KotlinJvmBinaryClass.Annotat
         if (newType == HeaderType.CLASS || newType == HeaderType.PACKAGE) {
             return kotlinClassOrPackageVisitor(annotationClassName);
         }
-        else if (newType == HeaderType.PACKAGE_FRAGMENT) {
+        else if (newType == HeaderType.PACKAGE_FRAGMENT || newType == HeaderType.TRAIT_IMPL) {
-            return kotlinPackageFragmentVisitor(annotationClassName);
+            return annotationWithAbiVersionVisitor(annotationClassName);
         }
 
         return null;
@@ -198,7 +201,7 @@ import static org.jetbrains.jet.lang.resolve.kotlin.KotlinJvmBinaryClass.Annotat
     }
 
     @NotNull
-    private AnnotationArgumentVisitor kotlinPackageFragmentVisitor(@NotNull final JvmClassName annotationClassName) {
+    private AnnotationArgumentVisitor annotationWithAbiVersionVisitor(@NotNull final JvmClassName annotationClassName) {
         return new AnnotationArgumentVisitor() {
             @Override
             public void visit(@Nullable Name name, @Nullable Object value) {

core/descriptor.loader.java/src/org/jetbrains/jet/lang/resolve/kotlin/header/TraitImplClassHeader.java

@@ -0,0 +1,23 @@
+/*
+ * Copyright 2010-2013 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * 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.
+ */
+
+package org.jetbrains.jet.lang.resolve.kotlin.header;
+
+/* package */ class TraitImplClassHeader extends KotlinClassHeader {
+    protected TraitImplClassHeader(int version) {
+        super(version);
+    }
+}

core/serialization.java/src/java_descriptors.proto

@@ -74,6 +74,10 @@ extend Callable {
 
   optional JavaPropertySignature property_signature = 101;
 
-  // For top-level callables, short name of "...Package$src$..." class with the callable's body and annotations
+  // Package-less name of the class with the callable's body and annotations, if it differs from the class it's serialized into.
-  optional int32 src_class_name = 102;
+  // E.g. for a class "A/B/C$D" this would be "C$D".
+  // This is needed to find the class to load annotations from in the following cases:
+  // 1) annotations on top-level members are written to compiled package fragment classes
+  // 2) annotations on properties in traits are written to TImpl classes
+  optional int32 impl_class_name = 102;
 }

core/serialization.java/src/org/jetbrains/jet/descriptors/serialization/JavaProtoBuf.java

@@ -9,7 +9,7 @@ public final class JavaProtoBuf {
       com.google.protobuf.ExtensionRegistryLite registry) {
     registry.add(org.jetbrains.jet.descriptors.serialization.JavaProtoBuf.methodSignature);
     registry.add(org.jetbrains.jet.descriptors.serialization.JavaProtoBuf.propertySignature);
-    registry.add(org.jetbrains.jet.descriptors.serialization.JavaProtoBuf.srcClassName);
+    registry.add(org.jetbrains.jet.descriptors.serialization.JavaProtoBuf.implClassName);
   }
   public interface JavaTypeOrBuilder
       extends com.google.protobuf.MessageLiteOrBuilder {
@@ -2825,14 +2825,14 @@ public final class JavaProtoBuf {
         null,
         101,
         com.google.protobuf.WireFormat.FieldType.MESSAGE);
-  public static final int SRC_CLASS_NAME_FIELD_NUMBER = 102;
+  public static final int IMPL_CLASS_NAME_FIELD_NUMBER = 102;
   /**
    * <code>extend .org.jetbrains.jet.descriptors.serialization.Callable { ... }</code>
    */
   public static final
     com.google.protobuf.GeneratedMessageLite.GeneratedExtension<
       org.jetbrains.jet.descriptors.serialization.ProtoBuf.Callable,
-      java.lang.Integer> srcClassName = com.google.protobuf.GeneratedMessageLite
+      java.lang.Integer> implClassName = com.google.protobuf.GeneratedMessageLite
           .newSingularGeneratedExtension(
         org.jetbrains.jet.descriptors.serialization.ProtoBuf.Callable.getDefaultInstance(),
         0,