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;
021    
022    import org.sonar.java.bytecode.asm.AsmClass;
023    import org.sonar.java.bytecode.asm.AsmMethod;
024    
025    public class VirtualMethodsLinker {
026    
027      public void process(AsmMethod method) {
028        if ( !method.isBodyLoaded() && method.isUsed()) {
029          AsmMethod implementation = findImplementation(method.getParent(), method.getKey());
030          if (implementation != null) {
031            implementation.setUsed(true);
032            method.linkTo(implementation);
033          }
034        }
035      }
036    
037      private AsmMethod findImplementation(AsmClass asmClass, String methodKey) {
038        AsmMethod method = asmClass.getMethod(methodKey);
039        if (method != null && method.isBodyLoaded()) {
040          return method;
041        }
042        if (asmClass.getSuperClass() != null) {
043          return findImplementation(asmClass.getSuperClass(), methodKey);
044        }
045        return null;
046      }
047    }