001    /*
002     * Sonar, open source software quality management tool.
003     * Copyright (C) 2008-2012 SonarSource
004     * mailto:contact AT sonarsource DOT com
005     *
006     * Sonar is free software; you can redistribute it and/or
007     * modify it under the terms of the GNU Lesser General Public
008     * License as published by the Free Software Foundation; either
009     * version 3 of the License, or (at your option) any later version.
010     *
011     * Sonar is distributed in the hope that it will be useful,
012     * but WITHOUT ANY WARRANTY; without even the implied warranty of
013     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
014     * Lesser General Public License for more details.
015     *
016     * You should have received a copy of the GNU Lesser General Public
017     * License along with Sonar; if not, write to the Free Software
018     * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02
019     */
020    package org.sonar.java.bytecode.asm;
021    
022    import org.sonar.squid.api.SourceCodeEdgeUsage;
023    
024    public class AsmEdge {
025    
026      private final AsmResource from;
027      private final AsmResource to;
028      private final SourceCodeEdgeUsage usage;
029      private int sourceLineNumber = 0;
030    
031      AsmEdge(AsmResource from, AsmResource to, SourceCodeEdgeUsage usage) {
032        this.from = from;
033        this.to = to;
034        this.usage = usage;
035        to.setUsed(true);
036      }
037    
038      AsmEdge(AsmResource from, AsmResource to, SourceCodeEdgeUsage usage, int sourceLineNumber) {
039        this(from, to, usage);
040        this.sourceLineNumber = sourceLineNumber;
041      }
042    
043      public int getSourceLineNumber() {
044        return sourceLineNumber;
045      }
046    
047      public AsmClass getTargetAsmClass() {
048        if (getTo().getParent() != null) {
049          return getTo().getParent();
050        } else {
051          return (AsmClass) getTo();
052        }
053      }
054    
055      public AsmResource getFrom() {
056        return from;
057      }
058    
059      public AsmResource getTo() {
060        return to;
061      }
062    
063      public SourceCodeEdgeUsage getUsage() {
064        return usage;
065      }
066    
067      @Override
068      public boolean equals(Object obj) {
069        if ( !(obj instanceof AsmEdge)) {
070          return false;
071        }
072        AsmEdge edge = (AsmEdge) obj;
073        return from.equals(edge.from) && to.equals(edge.to);
074      }
075    
076      @Override
077      public int hashCode() {
078        return from.hashCode() + to.hashCode() + usage.hashCode();
079      }
080    }