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.org.objectweb.asm.Type;
023    import org.jetbrains.org.objectweb.asm.commons.InstructionAdapter;
024    import org.jetbrains.jet.codegen.ExpressionCodegen;
025    import org.jetbrains.jet.codegen.StackValue;
026    import org.jetbrains.jet.lang.psi.JetExpression;
027    
028    import java.util.List;
029    
030    import static org.jetbrains.jet.codegen.AsmUtil.isPrimitive;
031    
032    public class UnaryPlus extends IntrinsicMethod {
033        @NotNull
034        @Override
035        public Type generateImpl(
036                @NotNull ExpressionCodegen codegen,
037                @NotNull InstructionAdapter v,
038                @NotNull Type returnType,
039                @Nullable PsiElement element,
040                @Nullable List<JetExpression> arguments,
041                StackValue receiver
042        ) {
043            assert isPrimitive(returnType) : "Return type of UnaryPlus intrinsic should be of primitive type : " + returnType;
044    
045            if (receiver != null && receiver != StackValue.none()) {
046                receiver.put(returnType, v);
047            }
048            else {
049                assert arguments != null;
050                codegen.gen(arguments.get(0), returnType);
051            }
052            return returnType;
053        }
054    }