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org.jetbrains.kotlin.codegen.ImplementationBodyCodegen Maven / Gradle / Ivy
/*
* Copyright 2010-2016 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.kotlin.codegen;
import com.intellij.openapi.progress.ProcessCanceledException;
import com.intellij.psi.PsiElement;
import com.intellij.util.ArrayUtil;
import kotlin.Unit;
import kotlin.collections.CollectionsKt;
import kotlin.jvm.functions.Function2;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import org.jetbrains.kotlin.backend.common.CodegenUtil;
import org.jetbrains.kotlin.backend.common.DataClassMethodGenerator;
import org.jetbrains.kotlin.builtins.KotlinBuiltIns;
import org.jetbrains.kotlin.codegen.binding.CodegenBinding;
import org.jetbrains.kotlin.codegen.binding.MutableClosure;
import org.jetbrains.kotlin.codegen.context.*;
import org.jetbrains.kotlin.codegen.extensions.ExpressionCodegenExtension;
import org.jetbrains.kotlin.codegen.signature.BothSignatureWriter;
import org.jetbrains.kotlin.codegen.signature.JvmSignatureWriter;
import org.jetbrains.kotlin.codegen.state.GenerationState;
import org.jetbrains.kotlin.codegen.state.KotlinTypeMapper;
import org.jetbrains.kotlin.descriptors.*;
import org.jetbrains.kotlin.incremental.components.NoLookupLocation;
import org.jetbrains.kotlin.lexer.KtTokens;
import org.jetbrains.kotlin.load.java.JvmAbi;
import org.jetbrains.kotlin.load.java.descriptors.JavaClassDescriptor;
import org.jetbrains.kotlin.load.kotlin.TypeMappingMode;
import org.jetbrains.kotlin.name.ClassId;
import org.jetbrains.kotlin.name.FqName;
import org.jetbrains.kotlin.name.Name;
import org.jetbrains.kotlin.platform.JavaToKotlinClassMap;
import org.jetbrains.kotlin.platform.JavaToKotlinClassMap.PlatformMutabilityMapping;
import org.jetbrains.kotlin.psi.*;
import org.jetbrains.kotlin.resolve.BindingContext;
import org.jetbrains.kotlin.resolve.DelegationResolver;
import org.jetbrains.kotlin.resolve.DescriptorToSourceUtils;
import org.jetbrains.kotlin.resolve.DescriptorUtils;
import org.jetbrains.kotlin.resolve.calls.callUtil.CallUtilKt;
import org.jetbrains.kotlin.resolve.calls.model.*;
import org.jetbrains.kotlin.resolve.descriptorUtil.DescriptorUtilsKt;
import org.jetbrains.kotlin.resolve.jvm.diagnostics.JvmDeclarationOrigin;
import org.jetbrains.kotlin.resolve.jvm.diagnostics.JvmDeclarationOriginKt;
import org.jetbrains.kotlin.resolve.jvm.jvmSignature.JvmClassSignature;
import org.jetbrains.kotlin.resolve.jvm.jvmSignature.JvmMethodParameterKind;
import org.jetbrains.kotlin.resolve.jvm.jvmSignature.JvmMethodParameterSignature;
import org.jetbrains.kotlin.resolve.jvm.jvmSignature.JvmMethodSignature;
import org.jetbrains.kotlin.resolve.scopes.receivers.ExtensionReceiver;
import org.jetbrains.kotlin.resolve.scopes.receivers.ImplicitReceiver;
import org.jetbrains.kotlin.resolve.scopes.receivers.ReceiverValue;
import org.jetbrains.kotlin.types.KotlinType;
import org.jetbrains.org.objectweb.asm.FieldVisitor;
import org.jetbrains.org.objectweb.asm.Label;
import org.jetbrains.org.objectweb.asm.MethodVisitor;
import org.jetbrains.org.objectweb.asm.Type;
import org.jetbrains.org.objectweb.asm.commons.InstructionAdapter;
import org.jetbrains.org.objectweb.asm.commons.Method;
import java.util.*;
import static org.jetbrains.kotlin.codegen.AsmUtil.*;
import static org.jetbrains.kotlin.codegen.CodegenUtilKt.isGenericToArray;
import static org.jetbrains.kotlin.codegen.CodegenUtilKt.isNonGenericToArray;
import static org.jetbrains.kotlin.codegen.JvmCodegenUtil.*;
import static org.jetbrains.kotlin.codegen.binding.CodegenBinding.enumEntryNeedSubclass;
import static org.jetbrains.kotlin.codegen.inline.InlineCodegenUtils2Kt.initDefaultSourceMappingIfNeeded;
import static org.jetbrains.kotlin.resolve.BindingContextUtils.getDelegationConstructorCall;
import static org.jetbrains.kotlin.resolve.BindingContextUtils.getNotNull;
import static org.jetbrains.kotlin.resolve.DescriptorToSourceUtils.descriptorToDeclaration;
import static org.jetbrains.kotlin.resolve.DescriptorUtils.*;
import static org.jetbrains.kotlin.resolve.jvm.AsmTypes.JAVA_STRING_TYPE;
import static org.jetbrains.kotlin.resolve.jvm.AsmTypes.OBJECT_TYPE;
import static org.jetbrains.kotlin.resolve.jvm.diagnostics.JvmDeclarationOrigin.NO_ORIGIN;
import static org.jetbrains.kotlin.resolve.jvm.diagnostics.JvmDeclarationOriginKind.CLASS_MEMBER_DELEGATION_TO_DEFAULT_IMPL;
import static org.jetbrains.kotlin.types.Variance.INVARIANT;
import static org.jetbrains.kotlin.types.expressions.ExpressionTypingUtils.isLocalFunction;
import static org.jetbrains.org.objectweb.asm.Opcodes.*;
import static org.jetbrains.org.objectweb.asm.Type.getObjectType;
public class ImplementationBodyCodegen extends ClassBodyCodegen {
private static final String ENUM_VALUES_FIELD_NAME = "$VALUES";
private Type superClassAsmType;
@NotNull
private SuperClassInfo superClassInfo;
private final Type classAsmType;
private final boolean isLocal;
private List companionObjectPropertiesToCopy;
private final DelegationFieldsInfo delegationFieldsInfo;
private final List> additionalTasks = new ArrayList<>();
public ImplementationBodyCodegen(
@NotNull KtPureClassOrObject aClass,
@NotNull ClassContext context,
@NotNull ClassBuilder v,
@NotNull GenerationState state,
@Nullable MemberCodegen parentCodegen,
boolean isLocal
) {
super(aClass, context, v, state, parentCodegen);
this.classAsmType = getObjectType(typeMapper.classInternalName(descriptor));
this.isLocal = isLocal;
delegationFieldsInfo = getDelegationFieldsInfo(myClass.getSuperTypeListEntries());
}
@Override
protected void generateDeclaration() {
getSuperClass();
JvmClassSignature signature = signature();
boolean isAbstract = false;
boolean isInterface = false;
boolean isFinal = false;
boolean isAnnotation = false;
boolean isEnum = false;
ClassKind kind = descriptor.getKind();
Modality modality = descriptor.getModality();
if (modality == Modality.ABSTRACT || modality == Modality.SEALED) {
isAbstract = true;
}
if (kind == ClassKind.INTERFACE) {
isAbstract = true;
isInterface = true;
}
else if (kind == ClassKind.ANNOTATION_CLASS) {
isAbstract = true;
isInterface = true;
isAnnotation = true;
}
else if (kind == ClassKind.ENUM_CLASS) {
isAbstract = hasAbstractMembers(descriptor);
isEnum = true;
}
if (modality != Modality.OPEN && !isAbstract) {
isFinal = kind == ClassKind.OBJECT ||
// Light-class mode: Do not make enum classes final since PsiClass corresponding to enum is expected to be inheritable from
!(kind == ClassKind.ENUM_CLASS && !state.getClassBuilderMode().generateBodies);
}
int access = 0;
if (state.getClassBuilderMode() == ClassBuilderMode.LIGHT_CLASSES && !DescriptorUtils.isTopLevelDeclaration(descriptor)) {
// !ClassBuilderMode.generateBodies means we are generating light classes & looking at a nested or inner class
// Light class generation is implemented so that Cls-classes only read bare code of classes,
// without knowing whether these classes are inner or not (see ClassStubBuilder.EMPTY_STRATEGY)
// Thus we must write full accessibility flags on inner classes in this mode
access |= getVisibilityAccessFlag(descriptor);
// Same for STATIC
if (!descriptor.isInner()) {
access |= ACC_STATIC;
}
}
else {
access |= getVisibilityAccessFlagForClass(descriptor);
}
if (isAbstract) {
access |= ACC_ABSTRACT;
}
if (isInterface) {
access |= ACC_INTERFACE; // ACC_SUPER
}
else {
access |= ACC_SUPER;
}
if (isFinal) {
access |= ACC_FINAL;
}
if (isAnnotation) {
access |= ACC_ANNOTATION;
}
if (KotlinBuiltIns.isDeprecated(descriptor)) {
access |= ACC_DEPRECATED;
}
if (isEnum) {
for (KtDeclaration declaration : myClass.getDeclarations()) {
if (declaration instanceof KtEnumEntry) {
if (enumEntryNeedSubclass(bindingContext, (KtEnumEntry) declaration)) {
access &= ~ACC_FINAL;
}
}
}
access |= ACC_ENUM;
}
v.defineClass(
myClass.getPsiOrParent(),
state.getClassFileVersion(),
access,
signature.getName(),
signature.getJavaGenericSignature(),
signature.getSuperclassName(),
ArrayUtil.toStringArray(signature.getInterfaces())
);
v.visitSource(myClass.getContainingKtFile().getName(), null);
initDefaultSourceMappingIfNeeded(context, this, state);
writeEnclosingMethod();
AnnotationCodegen.forClass(v.getVisitor(), this, typeMapper).genAnnotations(descriptor, null);
generateEnumEntries();
}
@Override
protected void generateDefaultImplsIfNeeded() {
if (isInterface(descriptor) && !isLocal && (!JvmCodegenUtil.isJvm8InterfaceWithDefaults(descriptor, state) || state.getGenerateDefaultImplsForJvm8())) {
Type defaultImplsType = state.getTypeMapper().mapDefaultImpls(descriptor);
ClassBuilder defaultImplsBuilder =
state.getFactory().newVisitor(JvmDeclarationOriginKt.DefaultImpls(myClass.getPsiOrParent(), descriptor), defaultImplsType, myClass.getContainingKtFile());
CodegenContext parentContext = context.getParentContext();
assert parentContext != null : "Parent context of interface declaration should not be null";
ClassContext defaultImplsContext = parentContext.intoDefaultImplsClass(descriptor, (ClassContext) context, state);
new InterfaceImplBodyCodegen(myClass, defaultImplsContext, defaultImplsBuilder, state, this).generate();
}
}
@Override
protected void generateKotlinMetadataAnnotation() {
generateKotlinClassMetadataAnnotation(descriptor, false);
}
private void writeEnclosingMethod() {
// Do not emit enclosing method in "light-classes mode" since currently we generate local light classes as if they're top level
if (!state.getClassBuilderMode().generateBodies) {
return;
}
//JVMS7: A class must have an EnclosingMethod attribute if and only if it is a local class or an anonymous class.
if (isAnonymousObject(descriptor) || !(descriptor.getContainingDeclaration() instanceof ClassOrPackageFragmentDescriptor)) {
writeOuterClassAndEnclosingMethod();
}
}
private static final Map KOTLIN_MARKER_INTERFACES = new HashMap<>();
static {
for (PlatformMutabilityMapping platformMutabilityMapping : JavaToKotlinClassMap.INSTANCE.getMutabilityMappings()) {
KOTLIN_MARKER_INTERFACES.put(
platformMutabilityMapping.getKotlinReadOnly().asSingleFqName(),
"kotlin/jvm/internal/markers/KMappedMarker");
ClassId mutableClassId = platformMutabilityMapping.getKotlinMutable();
KOTLIN_MARKER_INTERFACES.put(
mutableClassId.asSingleFqName(),
"kotlin/jvm/internal/markers/K" + mutableClassId.getRelativeClassName().asString()
.replace("MutableEntry", "Entry") // kotlin.jvm.internal.markers.KMutableMap.Entry for some reason
.replace(".", "$")
);
}
}
@NotNull
private JvmClassSignature signature() {
return signature(descriptor, classAsmType, superClassInfo, typeMapper);
}
@NotNull
public static JvmClassSignature signature(
@NotNull ClassDescriptor descriptor,
@NotNull Type classAsmType,
@NotNull SuperClassInfo superClassInfo,
@NotNull KotlinTypeMapper typeMapper
) {
JvmSignatureWriter sw = new BothSignatureWriter(BothSignatureWriter.Mode.CLASS);
typeMapper.writeFormalTypeParameters(descriptor.getDeclaredTypeParameters(), sw);
sw.writeSuperclass();
if (superClassInfo.getKotlinType() == null) {
sw.writeClassBegin(superClassInfo.getType());
sw.writeClassEnd();
}
else {
typeMapper.mapSupertype(superClassInfo.getKotlinType(), sw);
}
sw.writeSuperclassEnd();
LinkedHashSet superInterfaces = new LinkedHashSet<>();
Set kotlinMarkerInterfaces = new LinkedHashSet<>();
for (KotlinType supertype : descriptor.getTypeConstructor().getSupertypes()) {
if (isJvmInterface(supertype.getConstructor().getDeclarationDescriptor())) {
FqName kotlinInterfaceName = DescriptorUtils.getFqName(supertype.getConstructor().getDeclarationDescriptor()).toSafe();
sw.writeInterface();
Type jvmInterfaceType = typeMapper.mapSupertype(supertype, sw);
sw.writeInterfaceEnd();
String jvmInterfaceInternalName = jvmInterfaceType.getInternalName();
superInterfaces.add(jvmInterfaceInternalName);
String kotlinMarkerInterfaceInternalName = KOTLIN_MARKER_INTERFACES.get(kotlinInterfaceName);
if (kotlinMarkerInterfaceInternalName != null) {
if (typeMapper.getClassBuilderMode() == ClassBuilderMode.LIGHT_CLASSES) {
sw.writeInterface();
Type kotlinCollectionType = typeMapper.mapType(supertype, sw, TypeMappingMode.SUPER_TYPE_KOTLIN_COLLECTIONS_AS_IS);
sw.writeInterfaceEnd();
superInterfaces.add(kotlinCollectionType.getInternalName());
}
kotlinMarkerInterfaces.add(kotlinMarkerInterfaceInternalName);
}
}
}
for (String kotlinMarkerInterface : kotlinMarkerInterfaces) {
sw.writeInterface();
sw.writeAsmType(getObjectType(kotlinMarkerInterface));
sw.writeInterfaceEnd();
}
superInterfaces.addAll(kotlinMarkerInterfaces);
return new JvmClassSignature(classAsmType.getInternalName(), superClassInfo.getType().getInternalName(),
new ArrayList<>(superInterfaces), sw.makeJavaGenericSignature());
}
private void getSuperClass() {
superClassInfo = SuperClassInfo.getSuperClassInfo(descriptor, typeMapper);
superClassAsmType = superClassInfo.getType();
}
@Override
protected void generateSyntheticParts() {
generatePropertyMetadataArrayFieldIfNeeded(classAsmType);
generateFieldForSingleton();
generateCompanionObjectBackingFieldCopies();
generateTraitMethods();
generateDelegates(delegationFieldsInfo);
if (!isInterface(descriptor) || kind == OwnerKind.DEFAULT_IMPLS) {
generateSyntheticAccessors();
}
generateEnumMethods();
generateFunctionsForDataClasses();
if (state.getClassBuilderMode() != ClassBuilderMode.LIGHT_CLASSES) {
new CollectionStubMethodGenerator(typeMapper, descriptor).generate(functionCodegen, v);
generateToArray();
}
if (context.closure != null)
genClosureFields(context.closure, v, typeMapper);
if (state.getClassBuilderMode() == ClassBuilderMode.LIGHT_CLASSES) return;
for (ExpressionCodegenExtension extension : ExpressionCodegenExtension.Companion.getInstances(state.getProject())) {
extension.generateClassSyntheticParts(this);
}
}
@Override
protected void generateConstructors() {
try {
lookupConstructorExpressionsInClosureIfPresent();
generatePrimaryConstructor(delegationFieldsInfo);
for (ClassConstructorDescriptor secondaryConstructor : DescriptorUtilsKt.getSecondaryConstructors(descriptor)) {
generateSecondaryConstructor(secondaryConstructor);
}
}
catch (CompilationException | ProcessCanceledException e) {
throw e;
}
catch (RuntimeException e) {
throw new RuntimeException("Error generating constructors of class " + myClass.getName() + " with kind " + kind, e);
}
}
private void generateToArray() {
if (descriptor.getKind() == ClassKind.INTERFACE) return;
KotlinBuiltIns builtIns = DescriptorUtilsKt.getBuiltIns(descriptor);
if (!isSubclass(descriptor, builtIns.getCollection())) return;
if (CollectionsKt.any(DescriptorUtilsKt.getAllSuperclassesWithoutAny(descriptor),
classDescriptor -> !(classDescriptor instanceof JavaClassDescriptor) &&
isSubclass(classDescriptor, builtIns.getCollection()))) {
return;
}
Collection functions = descriptor.getDefaultType().getMemberScope().getContributedFunctions(
Name.identifier("toArray"), NoLookupLocation.FROM_BACKEND
);
boolean hasGenericToArray = false;
boolean hasNonGenericToArray = false;
for (FunctionDescriptor function : functions) {
hasGenericToArray |= isGenericToArray(function);
hasNonGenericToArray |= isNonGenericToArray(function);
}
if (!hasNonGenericToArray) {
MethodVisitor mv = v.newMethod(NO_ORIGIN, ACC_PUBLIC, "toArray", "()[Ljava/lang/Object;", null, null);
InstructionAdapter iv = new InstructionAdapter(mv);
mv.visitCode();
iv.load(0, classAsmType);
iv.invokestatic("kotlin/jvm/internal/CollectionToArray", "toArray", "(Ljava/util/Collection;)[Ljava/lang/Object;", false);
iv.areturn(Type.getType("[Ljava/lang/Object;"));
FunctionCodegen.endVisit(mv, "toArray", myClass);
}
if (!hasGenericToArray) {
MethodVisitor mv = v.newMethod(
NO_ORIGIN, ACC_PUBLIC, "toArray", "([Ljava/lang/Object;)[Ljava/lang/Object;", "([TT;)[TT;", null);
InstructionAdapter iv = new InstructionAdapter(mv);
mv.visitCode();
iv.load(0, classAsmType);
iv.load(1, Type.getType("[Ljava/lang/Object;"));
iv.invokestatic("kotlin/jvm/internal/CollectionToArray", "toArray",
"(Ljava/util/Collection;[Ljava/lang/Object;)[Ljava/lang/Object;", false);
iv.areturn(Type.getType("[Ljava/lang/Object;"));
FunctionCodegen.endVisit(mv, "toArray", myClass);
}
}
public Type genPropertyOnStack(
InstructionAdapter iv,
MethodContext context,
@NotNull PropertyDescriptor propertyDescriptor,
Type classAsmType,
int index
) {
iv.load(index, classAsmType);
if (couldUseDirectAccessToProperty(propertyDescriptor, /* forGetter = */ true,
/* isDelegated = */ false, context, state.getShouldInlineConstVals())) {
Type type = typeMapper.mapType(propertyDescriptor.getType());
String fieldName = ((FieldOwnerContext) context.getParentContext()).getFieldName(propertyDescriptor, false);
iv.getfield(classAsmType.getInternalName(), fieldName, type.getDescriptor());
return type;
}
else {
//noinspection ConstantConditions
Method method = typeMapper.mapAsmMethod(propertyDescriptor.getGetter());
iv.invokevirtual(classAsmType.getInternalName(), method.getName(), method.getDescriptor(), false);
return method.getReturnType();
}
}
private void generateFunctionsForDataClasses() {
if (!descriptor.isData()) return;
if (!(myClass instanceof KtClassOrObject)) return;
new DataClassMethodGeneratorImpl((KtClassOrObject)myClass, bindingContext).generate();
}
private class DataClassMethodGeneratorImpl extends DataClassMethodGenerator {
DataClassMethodGeneratorImpl(
KtClassOrObject klass,
BindingContext bindingContext
) {
super(klass, bindingContext);
}
@Override
public void generateEqualsMethod(@NotNull FunctionDescriptor function, @NotNull List properties) {
MethodContext context = ImplementationBodyCodegen.this.context.intoFunction(function);
MethodVisitor mv = v.newMethod(JvmDeclarationOriginKt.OtherOrigin(function), ACC_PUBLIC, "equals", "(Ljava/lang/Object;)Z", null, null);
InstructionAdapter iv = new InstructionAdapter(mv);
mv.visitCode();
Label eq = new Label();
Label ne = new Label();
iv.load(0, OBJECT_TYPE);
iv.load(1, OBJECT_TYPE);
iv.ifacmpeq(eq);
iv.load(1, OBJECT_TYPE);
iv.instanceOf(classAsmType);
iv.ifeq(ne);
iv.load(1, OBJECT_TYPE);
iv.checkcast(classAsmType);
iv.store(2, OBJECT_TYPE);
for (PropertyDescriptor propertyDescriptor : properties) {
Type asmType = typeMapper.mapType(propertyDescriptor);
Type thisPropertyType = genPropertyOnStack(iv, context, propertyDescriptor, ImplementationBodyCodegen.this.classAsmType, 0);
StackValue.coerce(thisPropertyType, asmType, iv);
Type otherPropertyType = genPropertyOnStack(iv, context, propertyDescriptor, ImplementationBodyCodegen.this.classAsmType, 2);
StackValue.coerce(otherPropertyType, asmType, iv);
if (asmType.getSort() == Type.FLOAT) {
iv.invokestatic("java/lang/Float", "compare", "(FF)I", false);
iv.ifne(ne);
}
else if (asmType.getSort() == Type.DOUBLE) {
iv.invokestatic("java/lang/Double", "compare", "(DD)I", false);
iv.ifne(ne);
}
else {
StackValue value = genEqualsForExpressionsOnStack(KtTokens.EQEQ, StackValue.onStack(asmType), StackValue.onStack(asmType));
value.put(Type.BOOLEAN_TYPE, iv);
iv.ifeq(ne);
}
}
iv.mark(eq);
iv.iconst(1);
iv.areturn(Type.INT_TYPE);
iv.mark(ne);
iv.iconst(0);
iv.areturn(Type.INT_TYPE);
FunctionCodegen.endVisit(mv, "equals", myClass);
}
@Override
public void generateHashCodeMethod(@NotNull FunctionDescriptor function, @NotNull List properties) {
MethodContext context = ImplementationBodyCodegen.this.context.intoFunction(function);
MethodVisitor mv = v.newMethod(JvmDeclarationOriginKt.OtherOrigin(function), ACC_PUBLIC, "hashCode", "()I", null, null);
InstructionAdapter iv = new InstructionAdapter(mv);
mv.visitCode();
boolean first = true;
for (PropertyDescriptor propertyDescriptor : properties) {
if (!first) {
iv.iconst(31);
iv.mul(Type.INT_TYPE);
}
Type propertyType = genPropertyOnStack(iv, context, propertyDescriptor, ImplementationBodyCodegen.this.classAsmType, 0);
Type asmType = typeMapper.mapType(propertyDescriptor);
StackValue.coerce(propertyType, asmType, iv);
Label ifNull = null;
if (!isPrimitive(asmType)) {
ifNull = new Label();
iv.dup();
iv.ifnull(ifNull);
}
genHashCode(mv, iv, asmType, state.getTarget());
if (ifNull != null) {
Label end = new Label();
iv.goTo(end);
iv.mark(ifNull);
iv.pop();
iv.iconst(0);
iv.mark(end);
}
if (first) {
first = false;
}
else {
iv.add(Type.INT_TYPE);
}
}
mv.visitInsn(IRETURN);
FunctionCodegen.endVisit(mv, "hashCode", myClass);
}
@Override
public void generateToStringMethod(@NotNull FunctionDescriptor function, @NotNull List properties) {
MethodContext context = ImplementationBodyCodegen.this.context.intoFunction(function);
MethodVisitor mv = v.newMethod(JvmDeclarationOriginKt.OtherOrigin(function), ACC_PUBLIC, "toString", "()Ljava/lang/String;", null, null);
InstructionAdapter iv = new InstructionAdapter(mv);
mv.visitCode();
genStringBuilderConstructor(iv);
boolean first = true;
for (PropertyDescriptor propertyDescriptor : properties) {
if (first) {
iv.aconst(descriptor.getName() + "(" + propertyDescriptor.getName().asString()+"=");
first = false;
}
else {
iv.aconst(", " + propertyDescriptor.getName().asString() + "=");
}
genInvokeAppendMethod(iv, JAVA_STRING_TYPE);
Type type = genPropertyOnStack(iv, context, propertyDescriptor, ImplementationBodyCodegen.this.classAsmType, 0);
if (type.getSort() == Type.ARRAY) {
Type elementType = correctElementType(type);
if (elementType.getSort() == Type.OBJECT || elementType.getSort() == Type.ARRAY) {
iv.invokestatic("java/util/Arrays", "toString", "([Ljava/lang/Object;)Ljava/lang/String;", false);
type = JAVA_STRING_TYPE;
}
else {
if (elementType.getSort() != Type.CHAR) {
iv.invokestatic("java/util/Arrays", "toString", "(" + type.getDescriptor() + ")Ljava/lang/String;", false);
type = JAVA_STRING_TYPE;
}
}
}
genInvokeAppendMethod(iv, type);
}
iv.aconst(")");
genInvokeAppendMethod(iv, JAVA_STRING_TYPE);
iv.invokevirtual("java/lang/StringBuilder", "toString", "()Ljava/lang/String;", false);
iv.areturn(JAVA_STRING_TYPE);
FunctionCodegen.endVisit(mv, "toString", myClass);
}
@Override
public void generateComponentFunction(@NotNull FunctionDescriptor function, @NotNull ValueParameterDescriptor parameter) {
PsiElement originalElement = DescriptorToSourceUtils.descriptorToDeclaration(parameter);
functionCodegen.generateMethod(JvmDeclarationOriginKt.OtherOrigin(originalElement, function), function, new FunctionGenerationStrategy() {
@Override
public void generateBody(
@NotNull MethodVisitor mv,
@NotNull FrameMap frameMap,
@NotNull JvmMethodSignature signature,
@NotNull MethodContext context,
@NotNull MemberCodegen parentCodegen
) {
Type componentType = signature.getReturnType();
InstructionAdapter iv = new InstructionAdapter(mv);
if (!componentType.equals(Type.VOID_TYPE)) {
PropertyDescriptor property =
bindingContext.get(BindingContext.PRIMARY_CONSTRUCTOR_PARAMETER, descriptorToDeclaration(parameter));
assert property != null : "Property descriptor is not found for primary constructor parameter: " + parameter;
Type propertyType = genPropertyOnStack(iv, context, property, ImplementationBodyCodegen.this.classAsmType, 0);
StackValue.coerce(propertyType, componentType, iv);
}
iv.areturn(componentType);
}
});
}
@Override
public void generateCopyFunction(
@NotNull FunctionDescriptor function,
@NotNull List constructorParameters
) {
Type thisDescriptorType = typeMapper.mapType(descriptor);
functionCodegen.generateMethod(JvmDeclarationOriginKt.OtherOriginFromPure(myClass, function), function, new FunctionGenerationStrategy() {
@Override
public void generateBody(
@NotNull MethodVisitor mv,
@NotNull FrameMap frameMap,
@NotNull JvmMethodSignature signature,
@NotNull MethodContext context,
@NotNull MemberCodegen parentCodegen
) {
InstructionAdapter iv = new InstructionAdapter(mv);
iv.anew(thisDescriptorType);
iv.dup();
ConstructorDescriptor constructor = getPrimaryConstructorOfDataClass(descriptor);
assert function.getValueParameters().size() == constructor.getValueParameters().size() :
"Number of parameters of copy function and constructor are different. " +
"Copy: " + function.getValueParameters().size() + ", " +
"constructor: " + constructor.getValueParameters().size();
MutableClosure closure = ImplementationBodyCodegen.this.context.closure;
if (closure != null) {
pushCapturedFieldsOnStack(iv, closure);
}
int parameterIndex = 1; // localVariable 0 = this
for (ValueParameterDescriptor parameterDescriptor : function.getValueParameters()) {
Type type = typeMapper.mapType(parameterDescriptor.getType());
iv.load(parameterIndex, type);
parameterIndex += type.getSize();
}
Method constructorAsmMethod = typeMapper.mapAsmMethod(constructor);
iv.invokespecial(thisDescriptorType.getInternalName(), "", constructorAsmMethod.getDescriptor(), false);
iv.areturn(thisDescriptorType);
}
private void pushCapturedFieldsOnStack(InstructionAdapter iv, MutableClosure closure) {
ClassDescriptor captureThis = closure.getCaptureThis();
if (captureThis != null) {
iv.load(0, classAsmType);
Type type = typeMapper.mapType(captureThis);
iv.getfield(classAsmType.getInternalName(), CAPTURED_THIS_FIELD, type.getDescriptor());
}
KotlinType captureReceiver = closure.getCaptureReceiverType();
if (captureReceiver != null) {
iv.load(0, classAsmType);
Type type = typeMapper.mapType(captureReceiver);
iv.getfield(classAsmType.getInternalName(), CAPTURED_RECEIVER_FIELD, type.getDescriptor());
}
for (Map.Entry entry : closure.getCaptureVariables().entrySet()) {
DeclarationDescriptor declarationDescriptor = entry.getKey();
EnclosedValueDescriptor enclosedValueDescriptor = entry.getValue();
StackValue capturedValue = enclosedValueDescriptor.getInstanceValue();
Type sharedVarType = typeMapper.getSharedVarType(declarationDescriptor);
if (sharedVarType == null) {
sharedVarType = typeMapper.mapType((VariableDescriptor) declarationDescriptor);
}
capturedValue.put(sharedVarType, iv);
}
}
});
functionCodegen.generateDefaultIfNeeded(
context.intoFunction(function), function, OwnerKind.IMPLEMENTATION,
(valueParameter, codegen) -> {
assert ((ClassDescriptor) function.getContainingDeclaration()).isData()
: "Function container must have [data] modifier: " + function;
PropertyDescriptor property = bindingContext.get(BindingContext.VALUE_PARAMETER_AS_PROPERTY, valueParameter);
assert property != null : "Copy function doesn't correspond to any property: " + function;
return codegen.intermediateValueForProperty(property, false, null, StackValue.LOCAL_0);
},
null
);
}
}
@NotNull
private static ConstructorDescriptor getPrimaryConstructorOfDataClass(@NotNull ClassDescriptor classDescriptor) {
ConstructorDescriptor constructor = classDescriptor.getUnsubstitutedPrimaryConstructor();
assert constructor != null : "Data class must have primary constructor: " + classDescriptor;
return constructor;
}
private void generateEnumMethods() {
if (isEnumClass(descriptor)) {
generateEnumValuesMethod();
generateEnumValueOfMethod();
}
}
private void generateEnumValuesMethod() {
Type type = typeMapper.mapType(DescriptorUtilsKt.getBuiltIns(descriptor).getArrayType(INVARIANT, descriptor.getDefaultType()));
FunctionDescriptor valuesFunction =
CollectionsKt.single(descriptor.getStaticScope().getContributedFunctions(ENUM_VALUES, NoLookupLocation.FROM_BACKEND));
MethodVisitor mv = v.newMethod(
JvmDeclarationOriginKt.OtherOriginFromPure(myClass, valuesFunction), ACC_PUBLIC | ACC_STATIC, ENUM_VALUES.asString(),
"()" + type.getDescriptor(), null, null
);
if (!state.getClassBuilderMode().generateBodies) return;
mv.visitCode();
mv.visitFieldInsn(GETSTATIC, classAsmType.getInternalName(), ENUM_VALUES_FIELD_NAME, type.getDescriptor());
mv.visitMethodInsn(INVOKEVIRTUAL, type.getInternalName(), "clone", "()Ljava/lang/Object;", false);
mv.visitTypeInsn(CHECKCAST, type.getInternalName());
mv.visitInsn(ARETURN);
FunctionCodegen.endVisit(mv, "values()", myClass);
}
private void generateEnumValueOfMethod() {
FunctionDescriptor valueOfFunction =
CollectionsKt.single(descriptor.getStaticScope().getContributedFunctions(ENUM_VALUE_OF, NoLookupLocation.FROM_BACKEND),
DescriptorUtilsKt::isEnumValueOfMethod);
MethodVisitor mv =
v.newMethod(JvmDeclarationOriginKt.OtherOriginFromPure(myClass, valueOfFunction), ACC_PUBLIC | ACC_STATIC, ENUM_VALUE_OF.asString(),
"(Ljava/lang/String;)" + classAsmType.getDescriptor(), null, null);
if (!state.getClassBuilderMode().generateBodies) return;
mv.visitCode();
mv.visitLdcInsn(classAsmType);
mv.visitVarInsn(ALOAD, 0);
mv.visitMethodInsn(INVOKESTATIC, "java/lang/Enum", "valueOf", "(Ljava/lang/Class;Ljava/lang/String;)Ljava/lang/Enum;", false);
mv.visitTypeInsn(CHECKCAST, classAsmType.getInternalName());
mv.visitInsn(ARETURN);
FunctionCodegen.endVisit(mv, "valueOf()", myClass);
}
private void generateFieldForSingleton() {
if (isEnumEntry(descriptor) || isCompanionObject(descriptor)) return;
if (isNonCompanionObject(descriptor)) {
StackValue.Field field = StackValue.singletonViaInstance(descriptor, typeMapper);
v.newField(JvmDeclarationOriginKt.OtherOriginFromPure(myClass),
ACC_PUBLIC | ACC_STATIC | ACC_FINAL,
field.name, field.type.getDescriptor(), null, null);
if (!state.getClassBuilderMode().generateBodies) return;
// Invoke the object constructor but ignore the result because INSTANCE will be initialized in the first line of
InstructionAdapter v = createOrGetClInitCodegen().v;
markLineNumberForElement(element.getPsiOrParent(), v);
v.anew(classAsmType);
v.invokespecial(classAsmType.getInternalName(), "", "()V", false);
return;
}
ClassDescriptor companionObjectDescriptor = descriptor.getCompanionObjectDescriptor();
if (companionObjectDescriptor == null) {
return;
}
@Nullable KtObjectDeclaration companionObject = CollectionsKt.firstOrNull(myClass.getCompanionObjects());
StackValue.Field field = StackValue.singleton(companionObjectDescriptor, typeMapper);
v.newField(JvmDeclarationOriginKt.OtherOrigin(companionObject == null ? myClass.getPsiOrParent() : companionObject),
ACC_PUBLIC | ACC_STATIC | ACC_FINAL, field.name, field.type.getDescriptor(), null, null);
}
private void generateCompanionObjectBackingFieldCopies() {
if (companionObjectPropertiesToCopy == null) return;
for (PropertyAndDefaultValue info : companionObjectPropertiesToCopy) {
PropertyDescriptor property = info.descriptor;
Type type = typeMapper.mapType(property);
int modifiers = ACC_STATIC | ACC_FINAL | ACC_PUBLIC;
FieldVisitor fv = v.newField(JvmDeclarationOriginKt.Synthetic(DescriptorToSourceUtils.descriptorToDeclaration(property), property),
modifiers, context.getFieldName(property, false),
type.getDescriptor(), typeMapper.mapFieldSignature(property.getType(), property),
info.defaultValue);
AnnotationCodegen.forField(fv, this, typeMapper).genAnnotations(property, type);
//This field are always static and final so if it has constant initializer don't do anything in clinit,
//field would be initialized via default value in v.newField(...) - see JVM SPEC Ch.4
// TODO: test this code
if (state.getClassBuilderMode().generateBodies && info.defaultValue == null) {
ExpressionCodegen codegen = createOrGetClInitCodegen();
int companionObjectIndex = putCompanionObjectInLocalVar(codegen);
StackValue.local(companionObjectIndex, OBJECT_TYPE).put(OBJECT_TYPE, codegen.v);
copyFieldFromCompanionObject(property);
}
}
}
private int putCompanionObjectInLocalVar(ExpressionCodegen codegen) {
FrameMap frameMap = codegen.myFrameMap;
ClassDescriptor companionObjectDescriptor = descriptor.getCompanionObjectDescriptor();
int companionObjectIndex = frameMap.getIndex(companionObjectDescriptor);
if (companionObjectIndex == -1) {
companionObjectIndex = frameMap.enter(companionObjectDescriptor, OBJECT_TYPE);
StackValue companionObject = StackValue.singleton(companionObjectDescriptor, typeMapper);
StackValue.local(companionObjectIndex, companionObject.type).store(companionObject, codegen.v);
}
return companionObjectIndex;
}
private void copyFieldFromCompanionObject(PropertyDescriptor propertyDescriptor) {
ExpressionCodegen codegen = createOrGetClInitCodegen();
StackValue property = codegen.intermediateValueForProperty(propertyDescriptor, false, null, StackValue.none());
StackValue.Field field = StackValue
.field(property.type, classAsmType, propertyDescriptor.getName().asString(), true, StackValue.none(), propertyDescriptor);
field.store(property, codegen.v);
}
private void generateCompanionObjectInitializer(@NotNull ClassDescriptor companionObject) {
ExpressionCodegen codegen = createOrGetClInitCodegen();
FunctionDescriptor constructor = (FunctionDescriptor) context.accessibleDescriptor(
CollectionsKt.single(companionObject.getConstructors()), /* superCallExpression = */ null
);
generateMethodCallTo(constructor, null, codegen.v);
StackValue instance = StackValue.onStack(typeMapper.mapClass(companionObject));
StackValue.singleton(companionObject, typeMapper).store(instance, codegen.v, true);
}
private void generatePrimaryConstructor(DelegationFieldsInfo delegationFieldsInfo) {
if (isInterface(descriptor) || isAnnotationClass(descriptor)) return;
ClassConstructorDescriptor constructorDescriptor = descriptor.getUnsubstitutedPrimaryConstructor();
if (constructorDescriptor == null) return;
ConstructorContext constructorContext = context.intoConstructor(constructorDescriptor);
KtPrimaryConstructor primaryConstructor = myClass.getPrimaryConstructor();
JvmDeclarationOrigin origin = JvmDeclarationOriginKt
.OtherOrigin(primaryConstructor != null ? primaryConstructor : myClass.getPsiOrParent(), constructorDescriptor);
functionCodegen.generateMethod(origin, constructorDescriptor, constructorContext,
new FunctionGenerationStrategy.CodegenBased(state) {
@Override
public void doGenerateBody(@NotNull ExpressionCodegen codegen, @NotNull JvmMethodSignature signature) {
generatePrimaryConstructorImpl(constructorDescriptor, codegen, delegationFieldsInfo, primaryConstructor);
}
}
);
functionCodegen.generateDefaultIfNeeded(constructorContext, constructorDescriptor, OwnerKind.IMPLEMENTATION,
DefaultParameterValueLoader.DEFAULT, null);
new DefaultParameterValueSubstitutor(state).generatePrimaryConstructorOverloadsIfNeeded(constructorDescriptor, v, this, kind, myClass);
}
private void generateSecondaryConstructor(@NotNull ClassConstructorDescriptor constructorDescriptor) {
if (!canHaveDeclaredConstructors(descriptor)) return;
ConstructorContext constructorContext = context.intoConstructor(constructorDescriptor);
KtSecondaryConstructor constructor = (KtSecondaryConstructor) descriptorToDeclaration(constructorDescriptor);
functionCodegen.generateMethod(
JvmDeclarationOriginKt.OtherOrigin(constructor, constructorDescriptor),
constructorDescriptor, constructorContext,
new FunctionGenerationStrategy.CodegenBased(state) {
@Override
public void doGenerateBody(@NotNull ExpressionCodegen codegen, @NotNull JvmMethodSignature signature) {
generateSecondaryConstructorImpl(constructorDescriptor, codegen);
}
}
);
functionCodegen.generateDefaultIfNeeded(constructorContext, constructorDescriptor, OwnerKind.IMPLEMENTATION,
DefaultParameterValueLoader.DEFAULT, null);
new DefaultParameterValueSubstitutor(state).generateOverloadsIfNeeded(
constructor, constructorDescriptor, constructorDescriptor, kind, v, this
);
}
private void generatePrimaryConstructorImpl(
@NotNull ClassConstructorDescriptor constructorDescriptor,
@NotNull ExpressionCodegen codegen,
@NotNull DelegationFieldsInfo fieldsInfo,
@Nullable KtPrimaryConstructor primaryConstructor
) {
InstructionAdapter iv = codegen.v;
markLineNumberForConstructor(constructorDescriptor, primaryConstructor, codegen);
generateClosureInitialization(iv);
generateDelegatorToConstructorCall(iv, codegen, constructorDescriptor,
getDelegationConstructorCall(bindingContext, constructorDescriptor));
if (isNonCompanionObject(descriptor)) {
StackValue.singletonViaInstance(descriptor, typeMapper).store(StackValue.LOCAL_0, iv);
}
for (KtSuperTypeListEntry specifier : myClass.getSuperTypeListEntries()) {
if (specifier instanceof KtDelegatedSuperTypeEntry) {
genCallToDelegatorByExpressionSpecifier(iv, codegen, (KtDelegatedSuperTypeEntry) specifier, fieldsInfo);
}
}
int curParam = 0;
List parameters = constructorDescriptor.getValueParameters();
for (KtParameter parameter : getPrimaryConstructorParameters()) {
if (parameter.hasValOrVar()) {
VariableDescriptor descriptor = parameters.get(curParam);
Type type = typeMapper.mapType(descriptor);
iv.load(0, classAsmType);
iv.load(codegen.myFrameMap.getIndex(descriptor), type);
PropertyDescriptor propertyDescriptor = bindingContext.get(BindingContext.PRIMARY_CONSTRUCTOR_PARAMETER, parameter);
assert propertyDescriptor != null : "Property descriptor is not found for primary constructor parameter: " + parameter;
iv.putfield(classAsmType.getInternalName(), context.getFieldName(propertyDescriptor, false), type.getDescriptor());
}
curParam++;
}
if (isCompanionObject(descriptor)) {
ImplementationBodyCodegen parentCodegen = (ImplementationBodyCodegen) getParentCodegen();
parentCodegen.generateCompanionObjectInitializer(descriptor);
}
if (JvmAbi.isCompanionObjectWithBackingFieldsInOuter(descriptor)) {
generateInitializers(((ImplementationBodyCodegen) getParentCodegen())::createOrGetClInitCodegen);
}
else {
generateInitializers(codegen);
}
iv.visitInsn(RETURN);
}
private void generateSecondaryConstructorImpl(
@NotNull ClassConstructorDescriptor constructorDescriptor,
@NotNull ExpressionCodegen codegen
) {
InstructionAdapter iv = codegen.v;
KtSecondaryConstructor constructor =
(KtSecondaryConstructor) DescriptorToSourceUtils.descriptorToDeclaration(constructorDescriptor);
markLineNumberForConstructor(constructorDescriptor, constructor, codegen);
ResolvedCall constructorDelegationCall =
getDelegationConstructorCall(bindingContext, constructorDescriptor);
ConstructorDescriptor delegateConstructor = constructorDelegationCall == null ? null :
constructorDelegationCall.getResultingDescriptor();
generateDelegatorToConstructorCall(iv, codegen, constructorDescriptor, constructorDelegationCall);
if (!isSameClassConstructor(delegateConstructor)) {
// Initialization happens only for constructors delegating to super
generateClosureInitialization(iv);
generateInitializers(codegen);
}
assert constructor != null;
if (constructor.hasBody()) {
codegen.gen(constructor.getBodyExpression(), Type.VOID_TYPE);
}
iv.visitInsn(RETURN);
}
private static void markLineNumberForConstructor(
@NotNull ClassConstructorDescriptor descriptor,
@Nullable KtConstructor constructor,
@NotNull ExpressionCodegen codegen
) {
if (constructor == null) {
markLineNumberForDescriptor(descriptor.getContainingDeclaration(), codegen.v);
}
else if (constructor.hasBody() && !(constructor instanceof KtSecondaryConstructor && !((KtSecondaryConstructor) constructor).hasImplicitDelegationCall())) {
KtBlockExpression bodyExpression = constructor.getBodyExpression();
List statements = bodyExpression != null ? bodyExpression.getStatements() : Collections.emptyList();
if (!statements.isEmpty()) {
codegen.markStartLineNumber(statements.iterator().next());
}
else {
codegen.markStartLineNumber(bodyExpression != null ? bodyExpression : constructor);
}
}
else {
codegen.markStartLineNumber(constructor);
}
}
public void generateInitializers(@NotNull ExpressionCodegen codegen) {
generateInitializers(() -> codegen);
}
private void generateClosureInitialization(@NotNull InstructionAdapter iv) {
MutableClosure closure = context.closure;
if (closure != null) {
List argsFromClosure = ClosureCodegen.calculateConstructorParameters(typeMapper, closure, classAsmType);
int k = 1;
for (FieldInfo info : argsFromClosure) {
k = AsmUtil.genAssignInstanceFieldFromParam(info, k, iv);
}
}
}
private void genSimpleSuperCall(InstructionAdapter iv) {
iv.load(0, superClassAsmType);
if (descriptor.getKind() == ClassKind.ENUM_CLASS || descriptor.getKind() == ClassKind.ENUM_ENTRY) {
iv.load(1, JAVA_STRING_TYPE);
iv.load(2, Type.INT_TYPE);
iv.invokespecial(superClassAsmType.getInternalName(), "", "(Ljava/lang/String;I)V", false);
}
else {
iv.invokespecial(superClassAsmType.getInternalName(), "", "()V", false);
}
}
private class DelegationFieldsInfo {
private class Field {
public final Type type;
public final String name;
public final boolean generateField;
private Field(Type type, String name, boolean generateField) {
this.type = type;
this.name = name;
this.generateField = generateField;
}
@NotNull
public StackValue getStackValue() {
return StackValue.field(type, classAsmType, name, false, StackValue.none());
}
}
private final Map fields = new HashMap<>();
@Nullable
public Field getInfo(KtDelegatedSuperTypeEntry specifier) {
Field field = fields.get(specifier);
assert field != null || state.getClassBuilderMode() == ClassBuilderMode.LIGHT_CLASSES : "No field for " + specifier.getText();
return field;
}
private void addField(KtDelegatedSuperTypeEntry specifier, PropertyDescriptor propertyDescriptor) {
fields.put(specifier,
new Field(typeMapper.mapType(propertyDescriptor), propertyDescriptor.getName().asString(), false));
}
private void addField(KtDelegatedSuperTypeEntry specifier, Type type, String name) {
fields.put(specifier, new Field(type, name, true));
}
}
@NotNull
private DelegationFieldsInfo getDelegationFieldsInfo(@NotNull List delegationSpecifiers) {
DelegationFieldsInfo result = new DelegationFieldsInfo();
int n = 0;
for (KtSuperTypeListEntry specifier : delegationSpecifiers) {
if (specifier instanceof KtDelegatedSuperTypeEntry) {
KtExpression expression = ((KtDelegatedSuperTypeEntry) specifier).getDelegateExpression();
if (expression == null) continue;
PropertyDescriptor propertyDescriptor = CodegenUtil.getDelegatePropertyIfAny(expression, descriptor, bindingContext);
if (CodegenUtil.isFinalPropertyWithBackingField(propertyDescriptor, bindingContext)) {
result.addField((KtDelegatedSuperTypeEntry) specifier, propertyDescriptor);
}
else {
KotlinType expressionType = bindingContext.getType(expression);
ClassDescriptor superClass = getSuperClass(specifier);
Type asmType =
expressionType != null ? typeMapper.mapType(expressionType) :
superClass != null ? typeMapper.mapType(superClass) : null;
if (asmType == null) continue;
result.addField((KtDelegatedSuperTypeEntry) specifier, asmType, JvmAbi.DELEGATE_SUPER_FIELD_PREFIX + n);
}
n++;
}
}
return result;
}
@Nullable
private ClassDescriptor getSuperClass(@NotNull KtSuperTypeListEntry specifier) {
ClassDescriptor superClass = CodegenUtil.getSuperClassBySuperTypeListEntry(specifier, bindingContext);
assert superClass != null || state.getClassBuilderMode() == ClassBuilderMode.LIGHT_CLASSES
: "ClassDescriptor should not be null:" + specifier.getText();
return superClass;
}
private void genCallToDelegatorByExpressionSpecifier(
InstructionAdapter iv,
ExpressionCodegen codegen,
KtDelegatedSuperTypeEntry specifier,
DelegationFieldsInfo fieldsInfo
) {
KtExpression expression = specifier.getDelegateExpression();
DelegationFieldsInfo.Field fieldInfo = fieldsInfo.getInfo(specifier);
if (fieldInfo == null) return;
if (fieldInfo.generateField) {
iv.load(0, classAsmType);
fieldInfo.getStackValue().store(codegen.gen(expression), iv);
}
}
private void lookupConstructorExpressionsInClosureIfPresent() {
if (!state.getClassBuilderMode().generateBodies || descriptor.getConstructors().isEmpty()) return;
KtVisitorVoid visitor = new KtVisitorVoid() {
@Override
public void visitKtElement(@NotNull KtElement e) {
e.acceptChildren(this);
}
@Override
public void visitSimpleNameExpression(@NotNull KtSimpleNameExpression expr) {
DeclarationDescriptor descriptor = bindingContext.get(BindingContext.REFERENCE_TARGET, expr);
if (isLocalFunction(descriptor)) {
lookupInContext(descriptor);
}
else if (descriptor instanceof CallableMemberDescriptor) {
ResolvedCall call = CallUtilKt.getResolvedCall(expr, bindingContext);
if (call != null) {
lookupReceivers(call);
}
if (call instanceof VariableAsFunctionResolvedCall) {
lookupReceivers(((VariableAsFunctionResolvedCall) call).getVariableCall());
}
}
else if (descriptor instanceof VariableDescriptor) {
DeclarationDescriptor containingDeclaration = descriptor.getContainingDeclaration();
if (containingDeclaration instanceof ConstructorDescriptor) {
ClassDescriptor classDescriptor = ((ConstructorDescriptor) containingDeclaration).getConstructedClass();
if (classDescriptor == ImplementationBodyCodegen.this.descriptor) return;
}
lookupInContext(descriptor);
}
}
private void lookupReceivers(@NotNull ResolvedCall call) {
lookupReceiver(call.getDispatchReceiver());
lookupReceiver(call.getExtensionReceiver());
}
private void lookupReceiver(@Nullable ReceiverValue value) {
if (value instanceof ImplicitReceiver) {
if (value instanceof ExtensionReceiver) {
ReceiverParameterDescriptor parameter =
((ExtensionReceiver) value).getDeclarationDescriptor().getExtensionReceiverParameter();
assert parameter != null : "Extension receiver should exist: " + ((ExtensionReceiver) value).getDeclarationDescriptor();
lookupInContext(parameter);
}
else {
lookupInContext(((ImplicitReceiver) value).getDeclarationDescriptor());
}
}
}
private void lookupInContext(@NotNull DeclarationDescriptor toLookup) {
context.lookupInContext(toLookup, StackValue.LOCAL_0, state, true);
}
@Override
public void visitThisExpression(@NotNull KtThisExpression expression) {
DeclarationDescriptor descriptor = bindingContext.get(BindingContext.REFERENCE_TARGET, expression.getInstanceReference());
assert descriptor instanceof CallableDescriptor ||
descriptor instanceof ClassDescriptor : "'This' reference target should be class or callable descriptor but was " + descriptor;
if (descriptor instanceof ClassDescriptor) {
lookupInContext(descriptor);
}
if (descriptor instanceof CallableDescriptor) {
ReceiverParameterDescriptor parameter = ((CallableDescriptor) descriptor).getExtensionReceiverParameter();
if (parameter != null) {
lookupInContext(parameter);
}
}
}
@Override
public void visitSuperExpression(@NotNull KtSuperExpression expression) {
lookupInContext(ExpressionCodegen.getSuperCallLabelTarget(context, expression));
}
};
for (KtDeclaration declaration : myClass.getDeclarations()) {
if (declaration instanceof KtProperty) {
KtProperty property = (KtProperty) declaration;
KtExpression initializer = property.getDelegateExpressionOrInitializer();
if (initializer != null) {
initializer.accept(visitor);
}
}
else if (declaration instanceof KtAnonymousInitializer) {
KtAnonymousInitializer initializer = (KtAnonymousInitializer) declaration;
initializer.accept(visitor);
}
else if (declaration instanceof KtSecondaryConstructor) {
KtSecondaryConstructor constructor = (KtSecondaryConstructor) declaration;
constructor.accept(visitor);
}
}
for (KtSuperTypeListEntry specifier : myClass.getSuperTypeListEntries()) {
if (specifier instanceof KtDelegatedSuperTypeEntry) {
KtExpression delegateExpression = ((KtDelegatedSuperTypeEntry) specifier).getDelegateExpression();
assert delegateExpression != null;
delegateExpression.accept(visitor);
}
else if (specifier instanceof KtSuperTypeCallEntry) {
specifier.accept(visitor);
}
}
}
private void generateTraitMethods() {
if (isAnnotationOrJvmInterfaceWithoutDefaults(descriptor, state)) return;
List restrictedInheritance = new ArrayList<>();
for (Map.Entry entry : CodegenUtil.getNonPrivateTraitMethods(descriptor).entrySet()) {
FunctionDescriptor interfaceFun = entry.getKey();
//skip java 8 default methods
if (!CodegenUtilKt.isDefinitelyNotDefaultImplsMethod(interfaceFun) && !isJvm8InterfaceWithDefaultsMember(interfaceFun, state)) {
if (state.isJvm8TargetWithDefaults() && !JvmCodegenUtil.isJvm8InterfaceWithDefaults(interfaceFun.getContainingDeclaration(), state)) {
restrictedInheritance.add(interfaceFun);
}
else {
generateDelegationToDefaultImpl(interfaceFun, entry.getValue());
}
}
}
CodegenUtilKt.reportTarget6InheritanceErrorIfNeeded(descriptor, myClass.getPsiOrParent(), restrictedInheritance, state);
}
private void generateDelegationToDefaultImpl(@NotNull FunctionDescriptor interfaceFun, @NotNull FunctionDescriptor inheritedFun) {
functionCodegen.generateMethod(
new JvmDeclarationOrigin(CLASS_MEMBER_DELEGATION_TO_DEFAULT_IMPL, descriptorToDeclaration(interfaceFun), interfaceFun),
inheritedFun,
new FunctionGenerationStrategy.CodegenBased(state) {
@Override
public void doGenerateBody(@NotNull ExpressionCodegen codegen, @NotNull JvmMethodSignature signature) {
DeclarationDescriptor containingDeclaration = interfaceFun.getContainingDeclaration();
if (!DescriptorUtils.isInterface(containingDeclaration)) return;
DeclarationDescriptor declarationInheritedFun = inheritedFun.getContainingDeclaration();
PsiElement classForInheritedFun = descriptorToDeclaration(declarationInheritedFun);
if (classForInheritedFun instanceof KtDeclaration) {
codegen.markLineNumber((KtElement) classForInheritedFun, false);
}
ClassDescriptor containingTrait = (ClassDescriptor) containingDeclaration;
Type traitImplType = typeMapper.mapDefaultImpls(containingTrait);
Method traitMethod = typeMapper.mapAsmMethod(interfaceFun.getOriginal(), OwnerKind.DEFAULT_IMPLS);
Type[] argTypes = signature.getAsmMethod().getArgumentTypes();
Type[] originalArgTypes = traitMethod.getArgumentTypes();
assert originalArgTypes.length == argTypes.length + 1 :
"Invalid trait implementation signature: " + signature + " vs " + traitMethod + " for " + interfaceFun;
InstructionAdapter iv = codegen.v;
iv.load(0, OBJECT_TYPE);
for (int i = 0, reg = 1; i < argTypes.length; i++) {
StackValue.local(reg, argTypes[i]).put(originalArgTypes[i + 1], iv);
//noinspection AssignmentToForLoopParameter
reg += argTypes[i].getSize();
}
if (KotlinBuiltIns.isCloneable(containingTrait) && traitMethod.getName().equals("clone")) {
// A special hack for Cloneable: there's no kotlin/Cloneable$DefaultImpls class at runtime,
// and its 'clone' method is actually located in java/lang/Object
iv.invokespecial("java/lang/Object", "clone", "()Ljava/lang/Object;", false);
}
else {
iv.invokestatic(traitImplType.getInternalName(), traitMethod.getName(), traitMethod.getDescriptor(), false);
}
Type returnType = signature.getReturnType();
StackValue.onStack(traitMethod.getReturnType()).put(returnType, iv);
iv.areturn(returnType);
}
}
);
}
private void generateDelegatorToConstructorCall(
@NotNull InstructionAdapter iv,
@NotNull ExpressionCodegen codegen,
@NotNull ClassConstructorDescriptor constructorDescriptor,
@Nullable ResolvedCall delegationConstructorCall
) {
if (delegationConstructorCall == null) {
genSimpleSuperCall(iv);
return;
}
iv.load(0, OBJECT_TYPE);
ConstructorDescriptor delegateConstructor = SamCodegenUtil.resolveSamAdapter(codegen.getConstructorDescriptor(delegationConstructorCall));
CallableMethod delegateConstructorCallable = typeMapper.mapToCallableMethod(delegateConstructor, false);
CallableMethod callable = typeMapper.mapToCallableMethod(constructorDescriptor, false);
List delegatingParameters = delegateConstructorCallable.getValueParameters();
List parameters = callable.getValueParameters();
ArgumentGenerator argumentGenerator;
if (isSameClassConstructor(delegateConstructor)) {
// if it's the same class constructor we should just pass all synthetic parameters
argumentGenerator =
generateThisCallImplicitArguments(iv, codegen, delegateConstructor, delegateConstructorCallable, delegatingParameters,
parameters);
}
else {
argumentGenerator =
generateSuperCallImplicitArguments(iv, codegen, constructorDescriptor, delegateConstructor, delegateConstructorCallable,
delegatingParameters,
parameters);
}
codegen.invokeMethodWithArguments(
delegateConstructorCallable, delegationConstructorCall, StackValue.none(), codegen.defaultCallGenerator, argumentGenerator);
}
private boolean isSameClassConstructor(@Nullable ConstructorDescriptor delegatingConstructor) {
return delegatingConstructor != null && delegatingConstructor.getContainingDeclaration() == descriptor;
}
@NotNull
private ArgumentGenerator generateSuperCallImplicitArguments(
@NotNull InstructionAdapter iv,
@NotNull ExpressionCodegen codegen,
@NotNull ConstructorDescriptor constructorDescriptor,
@NotNull ConstructorDescriptor superConstructor,
@NotNull CallableMethod superCallable,
@NotNull List superParameters,
@NotNull List parameters
) {
int offset = 1;
int superIndex = 0;
// Here we match all the super constructor parameters except those with kind VALUE to the derived constructor parameters, push
// them all onto the stack and update "offset" variable so that in the end it points to the slot of the first VALUE argument
for (JvmMethodParameterSignature parameter : parameters) {
if (superIndex >= superParameters.size()) break;
JvmMethodParameterKind superKind = superParameters.get(superIndex).getKind();
JvmMethodParameterKind kind = parameter.getKind();
Type type = parameter.getAsmType();
if (superKind == JvmMethodParameterKind.VALUE && kind == JvmMethodParameterKind.SUPER_CALL_PARAM) {
// Stop when we reach the actual value parameters present in the code; they will be generated via ResolvedCall below
break;
}
if (superKind == JvmMethodParameterKind.OUTER) {
assert kind == JvmMethodParameterKind.OUTER || kind == JvmMethodParameterKind.SUPER_CALL_PARAM :
String.format("Non-outer parameter incorrectly mapped to outer for %s: %s vs %s",
constructorDescriptor, parameters, superParameters);
// Super constructor requires OUTER parameter, but our OUTER instance may be different from what is expected by the super
// constructor. We need to traverse our outer classes from the bottom up, to find the needed class. See innerExtendsOuter.kt
ClassDescriptor outerForSuper = (ClassDescriptor) superConstructor.getContainingDeclaration().getContainingDeclaration();
StackValue outer = codegen.generateThisOrOuter(outerForSuper, true, true);
outer.put(outer.type, codegen.v);
superIndex++;
}
else if (kind == JvmMethodParameterKind.SUPER_CALL_PARAM || kind == JvmMethodParameterKind.ENUM_NAME_OR_ORDINAL) {
iv.load(offset, type);
superIndex++;
}
offset += type.getSize();
}
if (isAnonymousObject(descriptor)) {
List superValues = superParameters.subList(superIndex, superParameters.size());
return new ObjectSuperCallArgumentGenerator(superValues, iv, offset);
}
else {
return new CallBasedArgumentGenerator(codegen, codegen.defaultCallGenerator, superConstructor.getValueParameters(),
superCallable.getValueParameterTypes());
}
}
@NotNull
private static ArgumentGenerator generateThisCallImplicitArguments(
@NotNull InstructionAdapter iv,
@NotNull ExpressionCodegen codegen,
@NotNull ConstructorDescriptor delegatingConstructor,
@NotNull CallableMethod delegatingCallable,
@NotNull List delegatingParameters,
@NotNull List parameters
) {
int offset = 1;
int index = 0;
for (; index < delegatingParameters.size(); index++) {
JvmMethodParameterKind delegatingKind = delegatingParameters.get(index).getKind();
if (delegatingKind == JvmMethodParameterKind.VALUE) {
assert index == parameters.size() || parameters.get(index).getKind() == JvmMethodParameterKind.VALUE:
"Delegating constructor has not enough implicit parameters";
break;
}
assert index < parameters.size() && parameters.get(index).getKind() == delegatingKind :
"Constructors of the same class should have the same set of implicit arguments";
JvmMethodParameterSignature parameter = parameters.get(index);
iv.load(offset, parameter.getAsmType());
offset += parameter.getAsmType().getSize();
}
assert index == parameters.size() || parameters.get(index).getKind() == JvmMethodParameterKind.VALUE :
"Delegating constructor has not enough parameters";
return new CallBasedArgumentGenerator(codegen, codegen.defaultCallGenerator, delegatingConstructor.getValueParameters(),
delegatingCallable.getValueParameterTypes());
}
private static class ObjectSuperCallArgumentGenerator extends ArgumentGenerator {
private final List parameters;
private final InstructionAdapter iv;
private int offset;
public ObjectSuperCallArgumentGenerator(
@NotNull List superParameters,
@NotNull InstructionAdapter iv,
int firstValueParamOffset
) {
this.parameters = superParameters;
this.iv = iv;
this.offset = firstValueParamOffset;
}
@Override
public void generateExpression(int i, @NotNull ExpressionValueArgument argument) {
generateSuperCallArgument(i);
}
@Override
public void generateDefault(int i, @NotNull DefaultValueArgument argument) {
Type type = parameters.get(i).getAsmType();
pushDefaultValueOnStack(type, iv);
}
@Override
public void generateVararg(int i, @NotNull VarargValueArgument argument) {
generateSuperCallArgument(i);
}
private void generateSuperCallArgument(int i) {
Type type = parameters.get(i).getAsmType();
iv.load(offset, type);
offset += type.getSize();
}
@Override
protected void reorderArgumentsIfNeeded(@NotNull List args) {
}
}
private void generateEnumEntries() {
if (descriptor.getKind() != ClassKind.ENUM_CLASS) return;
List enumEntries = CollectionsKt.filterIsInstance(element.getDeclarations(), KtEnumEntry.class);
for (KtEnumEntry enumEntry : enumEntries) {
ClassDescriptor descriptor = getNotNull(bindingContext, BindingContext.CLASS, enumEntry);
int isDeprecated = KotlinBuiltIns.isDeprecated(descriptor) ? ACC_DEPRECATED : 0;
FieldVisitor fv = v.newField(JvmDeclarationOriginKt.OtherOrigin(enumEntry, descriptor), ACC_PUBLIC | ACC_ENUM | ACC_STATIC | ACC_FINAL | isDeprecated,
descriptor.getName().asString(), classAsmType.getDescriptor(), null, null);
AnnotationCodegen.forField(fv, this, typeMapper).genAnnotations(descriptor, null);
}
initializeEnumConstants(enumEntries);
}
private void initializeEnumConstants(@NotNull List enumEntries) {
if (!state.getClassBuilderMode().generateBodies) return;
ExpressionCodegen codegen = createOrGetClInitCodegen();
InstructionAdapter iv = codegen.v;
Type arrayAsmType = typeMapper.mapType(DescriptorUtilsKt.getBuiltIns(descriptor).getArrayType(INVARIANT, descriptor.getDefaultType()));
v.newField(JvmDeclarationOriginKt.OtherOriginFromPure(myClass), ACC_PRIVATE | ACC_STATIC | ACC_FINAL | ACC_SYNTHETIC, ENUM_VALUES_FIELD_NAME,
arrayAsmType.getDescriptor(), null, null);
iv.iconst(enumEntries.size());
iv.newarray(classAsmType);
if (!enumEntries.isEmpty()) {
iv.dup();
for (int ordinal = 0, size = enumEntries.size(); ordinal < size; ordinal++) {
initializeEnumConstant(enumEntries, ordinal);
}
}
iv.putstatic(classAsmType.getInternalName(), ENUM_VALUES_FIELD_NAME, arrayAsmType.getDescriptor());
}
private void initializeEnumConstant(@NotNull List enumEntries, int ordinal) {
ExpressionCodegen codegen = createOrGetClInitCodegen();
InstructionAdapter iv = codegen.v;
KtEnumEntry enumEntry = enumEntries.get(ordinal);
iv.dup();
iv.iconst(ordinal);
ClassDescriptor classDescriptor = getNotNull(bindingContext, BindingContext.CLASS, enumEntry);
Type implClass = typeMapper.mapClass(classDescriptor);
iv.anew(implClass);
iv.dup();
iv.aconst(enumEntry.getName());
iv.iconst(ordinal);
List delegationSpecifiers = enumEntry.getSuperTypeListEntries();
ResolvedCall defaultArgumentsConstructorCall = CallUtilKt.getResolvedCall(enumEntry, bindingContext);
boolean enumEntryHasSubclass = CodegenBinding.enumEntryNeedSubclass(bindingContext, classDescriptor);
if (delegationSpecifiers.size() == 1 && !enumEntryNeedSubclass(bindingContext, enumEntry)) {
ResolvedCall resolvedCall = CallUtilKt.getResolvedCallWithAssert(delegationSpecifiers.get(0), bindingContext);
CallableMethod method = typeMapper.mapToCallableMethod((ConstructorDescriptor) resolvedCall.getResultingDescriptor(), false);
codegen.invokeMethodWithArguments(method, resolvedCall, StackValue.none());
}
else if (defaultArgumentsConstructorCall != null && !enumEntryHasSubclass) {
codegen.invokeFunction(defaultArgumentsConstructorCall, StackValue.none()).put(Type.VOID_TYPE, iv);
}
else {
iv.invokespecial(implClass.getInternalName(), "", "(Ljava/lang/String;I)V", false);
}
iv.dup();
iv.putstatic(classAsmType.getInternalName(), enumEntry.getName(), classAsmType.getDescriptor());
iv.astore(OBJECT_TYPE);
}
private void generateDelegates(DelegationFieldsInfo delegationFieldsInfo) {
for (KtSuperTypeListEntry specifier : myClass.getSuperTypeListEntries()) {
if (specifier instanceof KtDelegatedSuperTypeEntry) {
DelegationFieldsInfo.Field field = delegationFieldsInfo.getInfo((KtDelegatedSuperTypeEntry) specifier);
if (field == null) continue;
generateDelegateField(field);
KtExpression delegateExpression = ((KtDelegatedSuperTypeEntry) specifier).getDelegateExpression();
KotlinType delegateExpressionType = delegateExpression != null ? bindingContext.getType(delegateExpression) : null;
ClassDescriptor superClass = getSuperClass(specifier);
if (superClass == null) continue;
generateDelegates(superClass, delegateExpressionType, field);
}
}
}
private void generateDelegateField(DelegationFieldsInfo.Field fieldInfo) {
if (!fieldInfo.generateField) return;
v.newField(JvmDeclarationOrigin.NO_ORIGIN, ACC_PRIVATE | ACC_FINAL | ACC_SYNTHETIC,
fieldInfo.name, fieldInfo.type.getDescriptor(), /*TODO*/null, null);
}
private void generateDelegates(
@NotNull ClassDescriptor toInterface,
@Nullable KotlinType delegateExpressionType,
@NotNull DelegationFieldsInfo.Field field
) {
for (Map.Entry entry : DelegationResolver.Companion.getDelegates(
descriptor, toInterface, delegateExpressionType).entrySet()
) {
CallableMemberDescriptor member = entry.getKey();
CallableMemberDescriptor delegateTo = entry.getValue();
if (member instanceof PropertyDescriptor) {
propertyCodegen.genDelegate((PropertyDescriptor) member, (PropertyDescriptor) delegateTo, field.getStackValue());
}
else if (member instanceof FunctionDescriptor) {
functionCodegen.genDelegate((FunctionDescriptor) member, (FunctionDescriptor) delegateTo, field.getStackValue());
}
}
}
public void addCompanionObjectPropertyToCopy(@NotNull PropertyDescriptor descriptor, Object defaultValue) {
if (companionObjectPropertiesToCopy == null) {
companionObjectPropertiesToCopy = new ArrayList<>();
}
companionObjectPropertiesToCopy.add(new PropertyAndDefaultValue(descriptor, defaultValue));
}
@Override
protected void done() {
for (Function2 task : additionalTasks) {
task.invoke(this, v);
}
super.done();
}
private static class PropertyAndDefaultValue {
public final PropertyDescriptor descriptor;
public final Object defaultValue;
public PropertyAndDefaultValue(@NotNull PropertyDescriptor descriptor, Object defaultValue) {
this.descriptor = descriptor;
this.defaultValue = defaultValue;
}
}
public void addAdditionalTask(Function2 additionalTask) {
additionalTasks.add(additionalTask);
}
}
