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.lang.cfg.pseudocode;
018    
019    import org.jetbrains.annotations.NotNull;
020    import org.jetbrains.jet.lang.cfg.Label;
021    
022    import java.util.Collection;
023    import java.util.Collections;
024    
025    public abstract class AbstractJumpInstruction extends InstructionImpl {
026        private final Label targetLabel;
027        private Instruction resolvedTarget;
028    
029        public AbstractJumpInstruction(Label targetLabel) {
030            this.targetLabel = targetLabel;
031        }
032    
033        public Label getTargetLabel() {
034            return targetLabel;
035        }
036    
037        public Instruction getResolvedTarget() {
038            return resolvedTarget;
039        }
040    
041        @NotNull
042        @Override
043        public Collection<Instruction> getNextInstructions() {
044            return Collections.singleton(getResolvedTarget());
045        }
046    
047        public void setResolvedTarget(Instruction resolvedTarget) {
048            this.resolvedTarget = outgoingEdgeTo(resolvedTarget);
049        }
050    
051        protected abstract AbstractJumpInstruction createCopy(@NotNull Label newLabel);
052    
053        final public Instruction copy(@NotNull Label newLabel) {
054            return updateCopyInfo(createCopy(newLabel));
055        }
056    
057        @Override
058        protected Instruction createCopy() {
059            return createCopy(targetLabel);
060        }
061    }