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
017package org.jetbrains.jet.codegen.intrinsics;
018
019import com.intellij.psi.PsiElement;
020import org.jetbrains.annotations.NotNull;
021import org.jetbrains.asm4.Type;
022import org.jetbrains.asm4.commons.InstructionAdapter;
023import org.jetbrains.jet.lang.resolve.java.AsmTypeConstants;
024import org.jetbrains.jet.codegen.ExpressionCodegen;
025import org.jetbrains.jet.codegen.StackValue;
026import org.jetbrains.jet.codegen.state.GenerationState;
027import org.jetbrains.jet.lang.psi.JetExpression;
028
029import java.util.List;
030
031public class IteratorNext implements IntrinsicMethod {
032    @Override
033    public StackValue generate(
034            ExpressionCodegen codegen,
035            InstructionAdapter v,
036            @NotNull Type expectedType,
037            PsiElement element,
038            List<JetExpression> arguments,
039            StackValue receiver,
040            @NotNull GenerationState state
041    ) {
042        String name;
043        if (expectedType == Type.CHAR_TYPE) {
044            name = "Char";
045        }
046        else if (expectedType == Type.BOOLEAN_TYPE) {
047            name = "Boolean";
048        }
049        else if (expectedType == Type.BYTE_TYPE) {
050            name = "Byte";
051        }
052        else if (expectedType == Type.SHORT_TYPE) {
053            name = "Short";
054        }
055        else if (expectedType == Type.INT_TYPE) {
056            name = "Int";
057        }
058        else if (expectedType == Type.LONG_TYPE) {
059            name = "Long";
060        }
061        else if (expectedType == Type.FLOAT_TYPE) {
062            name = "Float";
063        }
064        else if (expectedType == Type.DOUBLE_TYPE) {
065            name = "Double";
066        }
067        else {
068            throw new UnsupportedOperationException();
069        }
070        receiver.put(AsmTypeConstants.OBJECT_TYPE, v);
071        v.invokevirtual("jet/" + name + "Iterator", "next" + name, "()" + expectedType.getDescriptor());
072        return StackValue.onStack(expectedType);
073    }
074}