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/*
* Copyright 2010-2015 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.inline;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.kotlin.codegen.AsmUtil;
import org.jetbrains.kotlin.codegen.StackValue;
import org.jetbrains.kotlin.codegen.binding.CalculatedClosure;
import org.jetbrains.kotlin.codegen.context.EnclosedValueDescriptor;
import org.jetbrains.kotlin.codegen.state.JetTypeMapper;
import org.jetbrains.kotlin.descriptors.ClassDescriptor;
import org.jetbrains.kotlin.descriptors.FunctionDescriptor;
import org.jetbrains.kotlin.descriptors.ReceiverParameterDescriptor;
import org.jetbrains.kotlin.descriptors.ValueParameterDescriptor;
import org.jetbrains.kotlin.psi.JetExpression;
import org.jetbrains.kotlin.psi.JetFunctionLiteralExpression;
import org.jetbrains.kotlin.resolve.BindingContext;
import org.jetbrains.kotlin.resolve.jvm.AsmTypes;
import org.jetbrains.org.objectweb.asm.Type;
import org.jetbrains.org.objectweb.asm.tree.FieldInsnNode;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.Set;
import static org.jetbrains.kotlin.codegen.binding.CodegenBinding.*;
public class LambdaInfo implements CapturedParamOwner, LabelOwner {
public final JetExpression expression;
private final JetTypeMapper typeMapper;
@NotNull
public final Set labels;
private final CalculatedClosure closure;
private SMAPAndMethodNode node;
private List capturedVars;
private final FunctionDescriptor functionDescriptor;
private final ClassDescriptor classDescriptor;
private final Type closureClassType;
LambdaInfo(@NotNull JetExpression expr, @NotNull JetTypeMapper typeMapper) {
this.expression = expr instanceof JetFunctionLiteralExpression ?
((JetFunctionLiteralExpression) expr).getFunctionLiteral() : expr;
this.typeMapper = typeMapper;
BindingContext bindingContext = typeMapper.getBindingContext();
functionDescriptor = bindingContext.get(BindingContext.FUNCTION, expression);
assert functionDescriptor != null : "Function is not resolved to descriptor: " + expression.getText();
classDescriptor = anonymousClassForCallable(bindingContext, functionDescriptor);
closureClassType = asmTypeForAnonymousClass(bindingContext, functionDescriptor);
closure = bindingContext.get(CLOSURE, classDescriptor);
assert closure != null : "Closure for lambda should be not null " + expression.getText();
labels = InlineCodegen.getDeclarationLabels(expr, functionDescriptor);
}
public SMAPAndMethodNode getNode() {
return node;
}
public void setNode(SMAPAndMethodNode node) {
this.node = node;
}
public FunctionDescriptor getFunctionDescriptor() {
return functionDescriptor;
}
public JetExpression getFunctionWithBodyOrCallableReference() {
return expression;
}
public ClassDescriptor getClassDescriptor() {
return classDescriptor;
}
public Type getLambdaClassType() {
return closureClassType;
}
public List getCapturedVars() {
//lazy initialization cause it would be calculated after object creation
if (capturedVars == null) {
capturedVars = new ArrayList();
if (closure.getCaptureThis() != null) {
Type type = typeMapper.mapType(closure.getCaptureThis());
EnclosedValueDescriptor descriptor =
new EnclosedValueDescriptor(AsmUtil.CAPTURED_THIS_FIELD,
null,
StackValue.field(type, closureClassType, AsmUtil.CAPTURED_THIS_FIELD, false,
StackValue.LOCAL_0),
type);
capturedVars.add(getCapturedParamInfo(descriptor));
}
if (closure.getCaptureReceiverType() != null) {
Type type = typeMapper.mapType(closure.getCaptureReceiverType());
EnclosedValueDescriptor descriptor =
new EnclosedValueDescriptor(
AsmUtil.CAPTURED_RECEIVER_FIELD,
null,
StackValue.field(type, closureClassType, AsmUtil.CAPTURED_RECEIVER_FIELD, false,
StackValue.LOCAL_0),
type);
capturedVars.add(getCapturedParamInfo(descriptor));
}
for (EnclosedValueDescriptor descriptor : closure.getCaptureVariables().values()) {
capturedVars.add(getCapturedParamInfo(descriptor));
}
}
return capturedVars;
}
@NotNull
private CapturedParamDesc getCapturedParamInfo(@NotNull EnclosedValueDescriptor descriptor) {
return CapturedParamDesc.createDesc(this, descriptor.getFieldName(), descriptor.getType());
}
@NotNull
public List getInvokeParamsWithoutCaptured() {
Type[] types = typeMapper.mapSignature(functionDescriptor).getAsmMethod().getArgumentTypes();
return Arrays.asList(types);
}
@NotNull
public Parameters addAllParameters(FieldRemapper remapper) {
ParametersBuilder builder = ParametersBuilder.newBuilder();
//add skipped this cause inlined lambda doesn't have it
builder.addThis(AsmTypes.OBJECT_TYPE, true).setLambda(this);
FunctionDescriptor lambdaDescriptor = getFunctionDescriptor();
ReceiverParameterDescriptor extensionParameter = lambdaDescriptor.getExtensionReceiverParameter();
if (extensionParameter != null) {
Type type = typeMapper.mapType(extensionParameter.getType());
builder.addNextParameter(type, false, null);
}
List valueParameters = lambdaDescriptor.getValueParameters();
for (ValueParameterDescriptor parameter : valueParameters) {
Type type = typeMapper.mapType(parameter.getType());
builder.addNextParameter(type, false, null);
}
for (CapturedParamDesc info : getCapturedVars()) {
CapturedParamInfo field = remapper.findField(new FieldInsnNode(0, info.getContainingLambdaName(), info.getFieldName(), ""));
builder.addCapturedParam(field, info.getFieldName());
}
return builder.buildParameters();
}
@Override
public Type getType() {
return closureClassType;
}
@Override
public boolean isMyLabel(@NotNull String name) {
return labels.contains(name);
}
}
