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    
017    package org.jetbrains.jet.codegen.intrinsics;
018    
019    import com.intellij.psi.PsiElement;
020    import org.jetbrains.annotations.NotNull;
021    import org.jetbrains.annotations.Nullable;
022    import org.jetbrains.jet.codegen.ExpressionCodegen;
023    import org.jetbrains.jet.codegen.StackValue;
024    import org.jetbrains.jet.codegen.inline.ReifiedTypeInliner;
025    import org.jetbrains.jet.lang.psi.JetElement;
026    import org.jetbrains.jet.lang.psi.JetExpression;
027    import org.jetbrains.jet.lang.resolve.calls.callUtil.CallUtilPackage;
028    import org.jetbrains.jet.lang.resolve.calls.model.ResolvedCall;
029    import org.jetbrains.jet.lang.types.JetType;
030    import org.jetbrains.org.objectweb.asm.Type;
031    import org.jetbrains.org.objectweb.asm.commons.InstructionAdapter;
032    
033    import java.util.List;
034    
035    import static org.jetbrains.jet.codegen.AsmUtil.putJavaLangClassInstance;
036    import static org.jetbrains.jet.lang.resolve.java.AsmTypeConstants.getType;
037    
038    public class JavaClassFunction extends IntrinsicMethod {
039        @NotNull
040        @Override
041        public Type generateImpl(
042                @NotNull ExpressionCodegen codegen,
043                @NotNull InstructionAdapter v,
044                @NotNull Type expectedType,
045                @Nullable PsiElement element,
046                @NotNull List<JetExpression> arguments,
047                @NotNull StackValue receiver
048        ) {
049            ResolvedCall<?> resolvedCall = CallUtilPackage.getResolvedCallWithAssert(
050                    (JetElement) element, codegen.getBindingContext());
051            JetType returnType = resolvedCall.getResultingDescriptor().getReturnType();
052            assert returnType != null;
053    
054            JetType type = returnType.getArguments().get(0).getType();
055    
056            codegen.putReifierMarkerIfTypeIsReifiedParameter(type, ReifiedTypeInliner.JAVA_CLASS_MARKER_METHOD_NAME);
057    
058            putJavaLangClassInstance(v, codegen.getState().getTypeMapper().mapType(type));
059    
060            return getType(Class.class);
061        }
062    }