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.org.objectweb.asm.Type;
022    import org.jetbrains.jet.codegen.ExpressionCodegen;
023    import org.jetbrains.jet.codegen.StackValue;
024    import org.jetbrains.jet.lang.psi.JetExpression;
025    
026    import java.util.List;
027    
028    import static org.jetbrains.jet.codegen.AsmUtil.correctElementType;
029    
030    public class ArrayGet extends LazyIntrinsicMethod {
031        @NotNull
032        @Override
033        public StackValue generateImpl(
034                @NotNull ExpressionCodegen codegen,
035                @NotNull Type returnType,
036                PsiElement element,
037                @NotNull List<JetExpression> arguments,
038                @NotNull StackValue receiver
039        ) {
040            int argumentIndex;
041            if (receiver == StackValue.none()) {
042                receiver = codegen.gen(arguments.get(0));
043                argumentIndex = 1;
044            } else {
045                argumentIndex = 0;
046            }
047    
048            Type type = correctElementType(receiver.type);
049            return StackValue.arrayElement(type, receiver, StackValue.coercion(codegen.gen(arguments.get(argumentIndex)), Type.INT_TYPE));
050        }
051    }