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.asm4.Type;
023    import org.jetbrains.asm4.commons.InstructionAdapter;
024    import org.jetbrains.jet.codegen.ExpressionCodegen;
025    import org.jetbrains.jet.codegen.StackValue;
026    import org.jetbrains.jet.lang.psi.JetCallExpression;
027    import org.jetbrains.jet.lang.psi.JetExpression;
028    import org.jetbrains.jet.lang.resolve.BindingContext;
029    import org.jetbrains.jet.lang.resolve.calls.model.ResolvedCall;
030    import org.jetbrains.jet.lang.types.JetType;
031    
032    import java.util.List;
033    
034    import static org.jetbrains.jet.codegen.AsmUtil.boxType;
035    import static org.jetbrains.jet.codegen.AsmUtil.isPrimitive;
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                @Nullable List<JetExpression> arguments,
047                StackValue receiver
048        ) {
049            JetCallExpression call = (JetCallExpression) element;
050            ResolvedCall<?> resolvedCall = codegen.getBindingContext().get(BindingContext.RESOLVED_CALL, call.getCalleeExpression());
051            assert resolvedCall != null;
052            JetType returnType = resolvedCall.getResultingDescriptor().getReturnType();
053            assert returnType != null;
054            Type type = codegen.getState().getTypeMapper().mapType(returnType.getArguments().get(0).getType());
055            if (isPrimitive(type)) {
056                v.getstatic(boxType(type).getInternalName(), "TYPE", "Ljava/lang/Class;");
057            }
058            else {
059                v.aconst(type);
060            }
061    
062            return getType(Class.class);
063        }
064    }