org.jetbrains.jet.codegen.intrinsics.Clone Maven / Gradle / Ivy
/*
* Copyright 2010-2014 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.codegen.intrinsics;
import com.intellij.psi.PsiElement;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import org.jetbrains.jet.codegen.ExpressionCodegen;
import org.jetbrains.jet.codegen.StackValue;
import org.jetbrains.jet.lang.psi.JetElement;
import org.jetbrains.jet.lang.psi.JetExpression;
import org.jetbrains.jet.lang.psi.JetSuperExpression;
import org.jetbrains.jet.lang.resolve.calls.model.ResolvedCall;
import org.jetbrains.jet.lang.resolve.scopes.receivers.ExpressionReceiver;
import org.jetbrains.jet.lang.resolve.scopes.receivers.ReceiverValue;
import org.jetbrains.org.objectweb.asm.Type;
import org.jetbrains.org.objectweb.asm.commons.InstructionAdapter;
import java.util.List;
import static org.jetbrains.jet.lang.resolve.calls.callUtil.CallUtilPackage.getResolvedCallWithAssert;
import static org.jetbrains.jet.lang.resolve.java.AsmTypeConstants.OBJECT_TYPE;
public class Clone extends IntrinsicMethod {
@NotNull
@Override
protected Type generateImpl(
@NotNull ExpressionCodegen codegen,
@NotNull InstructionAdapter v,
@NotNull Type returnType,
@Nullable PsiElement element,
@NotNull List arguments,
@NotNull StackValue receiver
) {
ResolvedCall resolvedCall = getResolvedCallWithAssert(((JetElement) element), codegen.getBindingContext());
StackValue.receiver(resolvedCall, receiver, codegen, null).put(OBJECT_TYPE, v);
if (isSuperCall(resolvedCall)) {
v.invokespecial("java/lang/Object", "clone", "()Ljava/lang/Object;", false);
}
else {
v.invokevirtual("java/lang/Object", "clone", "()Ljava/lang/Object;", false);
}
return OBJECT_TYPE;
}
private static boolean isSuperCall(@NotNull ResolvedCall resolvedCall) {
ReceiverValue dispatchReceiver = resolvedCall.getDispatchReceiver();
return dispatchReceiver instanceof ExpressionReceiver &&
((ExpressionReceiver) dispatchReceiver).getExpression() instanceof JetSuperExpression;
}
}