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.lang.resolve.java.AsmTypeConstants;
025    import org.jetbrains.jet.codegen.ExpressionCodegen;
026    import org.jetbrains.jet.codegen.StackValue;
027    import org.jetbrains.jet.codegen.state.GenerationState;
028    import org.jetbrains.jet.lang.descriptors.CallableDescriptor;
029    import org.jetbrains.jet.lang.psi.JetCallExpression;
030    import org.jetbrains.jet.lang.psi.JetExpression;
031    import org.jetbrains.jet.lang.resolve.BindingContext;
032    import org.jetbrains.jet.lang.resolve.calls.model.ResolvedCall;
033    import org.jetbrains.jet.lang.types.JetType;
034    
035    import java.util.List;
036    
037    public class EnumValueOf implements IntrinsicMethod {
038        @Override
039        public StackValue generate(
040                ExpressionCodegen codegen, InstructionAdapter v, @NotNull Type expectedType, @Nullable PsiElement element,
041                @Nullable List<JetExpression> arguments, StackValue receiver, @NotNull GenerationState state
042        ) {
043            JetCallExpression call = (JetCallExpression) element;
044            ResolvedCall<? extends CallableDescriptor> resolvedCall =
045                    codegen.getBindingContext().get(BindingContext.RESOLVED_CALL, call.getCalleeExpression());
046            assert resolvedCall != null;
047            CallableDescriptor resultingDescriptor = resolvedCall.getResultingDescriptor();
048            JetType returnType = resultingDescriptor.getReturnType();
049            assert returnType != null;
050            Type type = state.getTypeMapper().mapType(returnType);
051            assert arguments != null;
052            codegen.gen(arguments.get(0), AsmTypeConstants.JAVA_STRING_TYPE);
053            v.invokestatic(type.getInternalName(), "valueOf", "(Ljava/lang/String;)" + type.getDescriptor());
054            StackValue.onStack(type).put(expectedType, v);
055            return StackValue.onStack(expectedType);
056        }
057    }