001    /*
002     * Sonar, open source software quality management tool.
003     * Copyright (C) 2009 SonarSource SA
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 java.io.File;
023    import java.util.ArrayList;
024    import java.util.Arrays;
025    import java.util.Collection;
026    import java.util.List;
027    
028    import org.sonar.java.bytecode.asm.AsmClass;
029    import org.sonar.java.bytecode.asm.AsmClassProvider;
030    import org.sonar.java.bytecode.asm.AsmClassProviderImpl;
031    import org.sonar.java.bytecode.asm.AsmClassProvider.DETAIL_LEVEL;
032    import org.sonar.java.bytecode.visitor.AccessorVisitor;
033    import org.sonar.java.bytecode.visitor.BytecodeVisitor;
034    import org.sonar.java.bytecode.visitor.DITVisitor;
035    import org.sonar.java.bytecode.visitor.DeadCodeDetectionVisitor;
036    import org.sonar.java.bytecode.visitor.DependenciesVisitor;
037    import org.sonar.java.bytecode.visitor.LCOM4Visitor;
038    import org.sonar.java.bytecode.visitor.NOCVisitor;
039    import org.sonar.java.bytecode.visitor.RFCVisitor;
040    import org.sonar.squid.api.CodeScanner;
041    import org.sonar.squid.api.SourceClass;
042    import org.sonar.squid.api.SourceCode;
043    import org.sonar.squid.indexer.QueryByType;
044    import org.sonar.squid.indexer.SquidIndex;
045    
046    public class BytecodeScanner extends CodeScanner<BytecodeVisitor> {
047    
048      private SquidIndex indexer;
049    
050      public BytecodeScanner(SquidIndex indexer) {
051        this.indexer = indexer;
052      }
053    
054      public BytecodeScanner scan(Collection<File> bytecodeFilesOrDirectories) {
055        Collection<SourceCode> classes = indexer.search(new QueryByType(SourceClass.class));
056        return scan(classes, new AsmClassProviderImpl(ClassworldsClassLoader.create(bytecodeFilesOrDirectories)));
057      }
058    
059      public BytecodeScanner scanDirectory(File bytecodeDirectory) {
060        return scan(Arrays.asList(bytecodeDirectory));
061      }
062    
063      protected BytecodeScanner scan(Collection<SourceCode> classes, AsmClassProvider classProvider) {
064        loadByteCodeInformation(classes, classProvider);
065        notifyBytecodeVisitors(classes, classProvider);
066        return this;
067      }
068    
069      private void notifyBytecodeVisitors(Collection<SourceCode> classes, AsmClassProvider classProvider) {
070        BytecodeVisitor[] visitorArray = getVisitors().toArray(new BytecodeVisitor[getVisitors().size()]);
071        for (SourceCode sourceCode : classes) {
072          AsmClass asmClass = classProvider.getClass(sourceCode.getKey(), DETAIL_LEVEL.STRUCTURE_AND_CALLS);
073          BytecodeVisitorNotifier visitorNotifier = new BytecodeVisitorNotifier(asmClass, visitorArray);
074          visitorNotifier.notifyVisitors();
075        }
076      }
077    
078      private void loadByteCodeInformation(Collection<SourceCode> classes, AsmClassProvider classProvider) {
079        for (SourceCode sourceCode : classes) {
080          classProvider.getClass(sourceCode.getKey(), DETAIL_LEVEL.STRUCTURE_AND_CALLS);
081        }
082      }
083    
084      @Override
085      public Collection<Class<? extends BytecodeVisitor>> getVisitorClasses() {
086        List<Class<? extends BytecodeVisitor>> visitorClasses = new ArrayList<Class<? extends BytecodeVisitor>>();
087        visitorClasses.add(AccessorVisitor.class);
088        visitorClasses.add(DITVisitor.class);
089        visitorClasses.add(RFCVisitor.class);
090        visitorClasses.add(NOCVisitor.class);
091        visitorClasses.add(LCOM4Visitor.class);
092        visitorClasses.add(DependenciesVisitor.class);
093        visitorClasses.add(DeadCodeDetectionVisitor.class);
094        return visitorClasses;
095      }
096    }