001/*
002 * Copyright 2010-2013 JetBrains s.r.o.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 * http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016
017package org.jetbrains.jet.codegen.intrinsics;
018
019import com.intellij.psi.PsiElement;
020import org.jetbrains.annotations.NotNull;
021import org.jetbrains.annotations.Nullable;
022import org.jetbrains.asm4.Type;
023import org.jetbrains.asm4.commons.InstructionAdapter;
024import org.jetbrains.jet.lang.resolve.java.AsmTypeConstants;
025import org.jetbrains.jet.codegen.ExpressionCodegen;
026import org.jetbrains.jet.codegen.StackValue;
027import org.jetbrains.jet.codegen.state.GenerationState;
028import org.jetbrains.jet.lang.descriptors.CallableDescriptor;
029import org.jetbrains.jet.lang.psi.JetCallExpression;
030import org.jetbrains.jet.lang.psi.JetExpression;
031import org.jetbrains.jet.lang.resolve.BindingContext;
032import org.jetbrains.jet.lang.resolve.calls.model.ResolvedCall;
033import org.jetbrains.jet.lang.resolve.java.JvmPrimitiveType;
034import org.jetbrains.jet.lang.types.JetType;
035
036import java.util.List;
037
038public class JavaClassFunction implements IntrinsicMethod {
039    @Override
040    public StackValue generate(
041            ExpressionCodegen codegen, InstructionAdapter v, @NotNull Type expectedType, @Nullable PsiElement element,
042            @Nullable List<JetExpression> arguments, StackValue receiver, @NotNull GenerationState state
043    ) {
044        JetCallExpression call = (JetCallExpression) element;
045        ResolvedCall<? extends CallableDescriptor> resolvedCall =
046                codegen.getBindingContext().get(BindingContext.RESOLVED_CALL, call.getCalleeExpression());
047        assert resolvedCall != null;
048        CallableDescriptor resultingDescriptor = resolvedCall.getResultingDescriptor();
049        JetType returnType = resultingDescriptor.getReturnType();
050        assert returnType != null;
051        Type type = state.getTypeMapper().mapType(returnType.getArguments().get(0).getType());
052        JvmPrimitiveType primitiveType = JvmPrimitiveType.getByAsmType(type);
053        if (primitiveType != null) {
054            v.getstatic(primitiveType.getWrapper().getAsmType().getInternalName(), "TYPE", "Ljava/lang/Class;");
055        }
056        else {
057            v.aconst(type);
058        }
059        return StackValue.onStack(AsmTypeConstants.getType(Class.class));
060    }
061}