Simplify codegen of annotations, get rid of use-site targets

compiler/backend/src/org/jetbrains/kotlin/codegen/AnnotationCodegen.java

@@ -99,28 +99,13 @@ public abstract class AnnotationCodegen {
      * @param returnType can be null if not applicable (e.g. {@code annotated} is a class)
      */
     public void genAnnotations(@Nullable Annotated annotated, @Nullable Type returnType) {
-        genAnnotations(annotated, returnType, null);
-    }
-
-    public void genAnnotations(@Nullable Annotated annotated, @Nullable Type returnType, @Nullable AnnotationUseSiteTarget allowedTarget) {
-        if (annotated == null) {
-            return;
-        }
+        if (annotated == null) return;
 
         Set<String> annotationDescriptorsAlreadyPresent = new HashSet<>();
 
         Annotations annotations = annotated.getAnnotations();
 
-        for (AnnotationWithTarget annotationWithTarget : annotations.getAllAnnotations()) {
-            AnnotationDescriptor annotation = annotationWithTarget.getAnnotation();
-            AnnotationUseSiteTarget annotationTarget = annotationWithTarget.getTarget();
-
-            // Skip targeted annotations by default
-            if (allowedTarget == null && annotationTarget != null) continue;
-
-            // Skip if the target is not the same
-            if (allowedTarget != null && annotationTarget != null && allowedTarget != annotationTarget) continue;
-
+        for (AnnotationDescriptor annotation : annotations) {
             Set<KotlinTarget> applicableTargets = AnnotationChecker.applicableTargetSet(annotation);
             if (annotated instanceof AnonymousFunctionDescriptor
                 && !applicableTargets.contains(KotlinTarget.FUNCTION)

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

@@ -28,7 +28,6 @@ import org.jetbrains.kotlin.config.LanguageFeature;
 import org.jetbrains.kotlin.descriptors.*;
 import org.jetbrains.kotlin.descriptors.annotations.Annotated;
 import org.jetbrains.kotlin.descriptors.annotations.AnnotationDescriptor;
-import org.jetbrains.kotlin.descriptors.annotations.AnnotationUseSiteTarget;
 import org.jetbrains.kotlin.descriptors.annotations.AnnotationUtilKt;
 import org.jetbrains.kotlin.descriptors.impl.AnonymousFunctionDescriptor;
 import org.jetbrains.kotlin.descriptors.impl.ValueParameterDescriptorImpl;
@@ -72,8 +71,6 @@ import static org.jetbrains.kotlin.codegen.AsmUtil.*;
 import static org.jetbrains.kotlin.codegen.serialization.JvmSerializationBindings.METHOD_FOR_FUNCTION;
 import static org.jetbrains.kotlin.descriptors.CallableMemberDescriptor.Kind.DECLARATION;
 import static org.jetbrains.kotlin.descriptors.ModalityKt.isOverridable;
-import static org.jetbrains.kotlin.descriptors.annotations.AnnotationUseSiteTarget.PROPERTY_GETTER;
-import static org.jetbrains.kotlin.descriptors.annotations.AnnotationUseSiteTarget.PROPERTY_SETTER;
 import static org.jetbrains.kotlin.descriptors.annotations.AnnotationUtilKt.isEffectivelyInlineOnly;
 import static org.jetbrains.kotlin.resolve.DescriptorToSourceUtils.getSourceFromDescriptor;
 import static org.jetbrains.kotlin.resolve.DescriptorUtils.*;
@@ -232,9 +229,9 @@ public class FunctionCodegen {
             v.getSerializationBindings().put(METHOD_FOR_FUNCTION, CodegenUtilKt.unwrapFrontendVersion(functionDescriptor), asmMethod);
         }
 
-        generateMethodAnnotations(functionDescriptor, asmMethod, mv, memberCodegen, typeMapper);
+        AnnotationCodegen.forMethod(mv, memberCodegen, typeMapper).genAnnotations(functionDescriptor, asmMethod.getReturnType());
 
-        generateParameterAnnotations(functionDescriptor, mv, jvmSignature);
+        generateParameterAnnotations(functionDescriptor, mv, jvmSignature, memberCodegen, state);
         GenerateJava8ParameterNamesKt.generateParameterNames(functionDescriptor, mv, jvmSignature, state, (flags & ACC_SYNTHETIC) != 0);
 
         if (contextKind != OwnerKind.ERASED_INLINE_CLASS) {
@@ -474,32 +471,6 @@ public class FunctionCodegen {
         );
     }
 
-    public static void generateMethodAnnotations(
-            @NotNull FunctionDescriptor functionDescriptor,
-            Method asmMethod,
-            MethodVisitor mv,
-            @NotNull InnerClassConsumer consumer,
-            @NotNull KotlinTypeMapper typeMapper
-    ) {
-        AnnotationCodegen annotationCodegen = AnnotationCodegen.forMethod(mv, consumer, typeMapper);
-
-        if (functionDescriptor instanceof PropertyAccessorDescriptor) {
-            AnnotationUseSiteTarget target = functionDescriptor instanceof PropertySetterDescriptor ? PROPERTY_SETTER : PROPERTY_GETTER;
-            annotationCodegen.genAnnotations(functionDescriptor, asmMethod.getReturnType(), target);
-        }
-        else {
-            annotationCodegen.genAnnotations(functionDescriptor, asmMethod.getReturnType());
-        }
-    }
-
-    private void generateParameterAnnotations(
-            @NotNull FunctionDescriptor functionDescriptor,
-            @NotNull MethodVisitor mv,
-            @NotNull JvmMethodSignature jvmSignature
-    ) {
-        generateParameterAnnotations(functionDescriptor, mv, jvmSignature, memberCodegen, state);
-    }
-
     public static void generateParameterAnnotations(
             @NotNull FunctionDescriptor functionDescriptor,
             @NotNull MethodVisitor mv,

compiler/backend/src/org/jetbrains/kotlin/codegen/MemberCodegen.java

@@ -21,7 +21,6 @@ import org.jetbrains.kotlin.codegen.state.GenerationState;
 import org.jetbrains.kotlin.codegen.state.KotlinTypeMapper;
 import org.jetbrains.kotlin.descriptors.*;
 import org.jetbrains.kotlin.descriptors.annotations.AnnotatedImpl;
-import org.jetbrains.kotlin.descriptors.annotations.AnnotationUseSiteTarget;
 import org.jetbrains.kotlin.descriptors.annotations.Annotations;
 import org.jetbrains.kotlin.descriptors.impl.SimpleFunctionDescriptorImpl;
 import org.jetbrains.kotlin.fileClasses.JvmFileClassUtil;
@@ -249,19 +248,18 @@ public abstract class MemberCodegen<T extends KtPureElement/* TODO: & KtDeclarat
         if (!isAnnotationsMethodOwner || annotations.getAllAnnotations().isEmpty()) return;
 
         String name = JvmAbi.getSyntheticMethodNameForAnnotatedTypeAlias(typeAliasDescriptor.getName());
-        generateSyntheticAnnotationsMethod(typeAliasDescriptor, new Method(name, "()V"), annotations, null);
+        generateSyntheticAnnotationsMethod(typeAliasDescriptor, new Method(name, "()V"), annotations);
     }
 
     protected void generateSyntheticAnnotationsMethod(
             @NotNull MemberDescriptor descriptor,
             @NotNull Method syntheticMethod,
-            @NotNull Annotations annotations,
-            @Nullable AnnotationUseSiteTarget allowedTarget
+            @NotNull Annotations annotations
     ) {
         int flags = ACC_DEPRECATED | ACC_STATIC | ACC_SYNTHETIC | AsmUtil.getVisibilityAccessFlag(descriptor);
         MethodVisitor mv = v.newMethod(JvmDeclarationOriginKt.OtherOrigin(descriptor), flags, syntheticMethod.getName(),
                                        syntheticMethod.getDescriptor(), null, null);
-        AnnotationCodegen.forMethod(mv, this, typeMapper).genAnnotations(new AnnotatedImpl(annotations), Type.VOID_TYPE, allowedTarget);
+        AnnotationCodegen.forMethod(mv, this, typeMapper).genAnnotations(new AnnotatedImpl(annotations), Type.VOID_TYPE);
         mv.visitCode();
         mv.visitInsn(Opcodes.RETURN);
         mv.visitEnd();

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

@@ -18,7 +18,6 @@ import org.jetbrains.kotlin.codegen.state.GenerationState;
 import org.jetbrains.kotlin.codegen.state.KotlinTypeMapper;
 import org.jetbrains.kotlin.config.LanguageFeature;
 import org.jetbrains.kotlin.descriptors.*;
-import org.jetbrains.kotlin.descriptors.annotations.AnnotationUseSiteTarget;
 import org.jetbrains.kotlin.descriptors.annotations.Annotations;
 import org.jetbrains.kotlin.fileClasses.JvmFileClassUtilKt;
 import org.jetbrains.kotlin.load.java.JvmAbi;
@@ -261,7 +260,7 @@ public class PropertyCodegen {
         PropertyGetterDescriptor getter = descriptor.getGetter();
         assert getter != null : "Annotation property should have a getter: " + descriptor;
         v.getSerializationBindings().put(METHOD_FOR_FUNCTION, getter, asmMethod);
-        FunctionCodegen.generateMethodAnnotations(getter, asmMethod, mv, memberCodegen, typeMapper);
+        AnnotationCodegen.forMethod(mv, memberCodegen, typeMapper).genAnnotations(getter, asmMethod.getReturnType());
 
         KtExpression defaultValue = loadAnnotationArgumentDefaultValue(parameter, descriptor, expectedAnnotationConstructor);
         if (defaultValue != null) {
@@ -338,7 +337,7 @@ public class PropertyCodegen {
         if (isBackingFieldOwner) {
             if (!isInterface(context.getContextDescriptor()) ||
                 processInterfaceMethod(descriptor, kind, false, true, state.getJvmDefaultMode())) {
-                memberCodegen.generateSyntheticAnnotationsMethod(descriptor, signature, annotations, AnnotationUseSiteTarget.PROPERTY);
+                memberCodegen.generateSyntheticAnnotationsMethod(descriptor, signature, annotations);
             }
         }
     }

compiler/backend/src/org/jetbrains/kotlin/codegen/ScriptCodegen.kt

@@ -99,7 +99,9 @@ class ScriptCodegen private constructor(
                 OtherOrigin(scriptDeclaration, scriptDescriptor.unsubstitutedPrimaryConstructor),
                 ACC_PUBLIC, jvmSignature.asmMethod.name, jvmSignature.asmMethod.descriptor, null, null)
 
-        FunctionCodegen.generateMethodAnnotations(scriptDescriptor.unsubstitutedPrimaryConstructor, asmMethod, mv, this, typeMapper)
+        AnnotationCodegen.forMethod(mv, this, typeMapper).genAnnotations(
+            scriptDescriptor.unsubstitutedPrimaryConstructor, asmMethod.returnType
+        )
 
         if (state.classBuilderMode.generateBodies) {
             mv.visitCode()

compiler/ir/backend.jvm/src/org/jetbrains/kotlin/backend/jvm/codegen/FunctionCodegen.kt

@@ -48,7 +48,9 @@ open class FunctionCodegen(private val irFunction: IrFunction, private val class
         val flags = calculateMethodFlags(irFunction.isStatic)
         val methodVisitor = createMethod(flags, signature)
 
-        FunctionCodegen.generateMethodAnnotations(descriptor, signature.asmMethod, methodVisitor, classCodegen, state.typeMapper)
+        AnnotationCodegen.forMethod(methodVisitor, classCodegen, state.typeMapper).genAnnotations(
+            descriptor, signature.asmMethod.returnType
+        )
         FunctionCodegen.generateParameterAnnotations(descriptor, methodVisitor, signature, classCodegen, state)
 
         if (!state.classBuilderMode.generateBodies || flags.and(Opcodes.ACC_ABSTRACT) != 0 || irFunction.isExternal) {