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.lang.cfg.pseudocode;
018
019import org.jetbrains.annotations.NotNull;
020import org.jetbrains.jet.lang.psi.JetElement;
021
022import java.util.Collection;
023import java.util.Collections;
024
025public class SubroutineExitInstruction extends InstructionImpl {
026    private final JetElement subroutine;
027    private final String debugLabel;
028    private SubroutineSinkInstruction sinkInstruction;
029
030    public SubroutineExitInstruction(@NotNull JetElement subroutine, @NotNull String debugLabel) {
031        this.subroutine = subroutine;
032        this.debugLabel = debugLabel;
033    }
034
035    public JetElement getSubroutine() {
036        return subroutine;
037    }
038
039    public void setSink(SubroutineSinkInstruction instruction) {
040        sinkInstruction = (SubroutineSinkInstruction) outgoingEdgeTo(instruction);
041    }
042
043    @NotNull
044    @Override
045    public Collection<Instruction> getNextInstructions() {
046        assert sinkInstruction != null;
047        return Collections.<Instruction>singleton(sinkInstruction);
048    }
049
050    @Override
051    public void accept(InstructionVisitor visitor) {
052        visitor.visitSubroutineExit(this);
053    }
054
055    @Override
056    public String toString() {
057        return debugLabel;
058    }
059
060    @Override
061    protected Instruction createCopy() {
062        return new SubroutineExitInstruction(subroutine, debugLabel);
063    }
064}