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.squid.ast.visitor;
021    
022    import java.util.Arrays;
023    import java.util.List;
024    
025    import org.sonar.squid.api.SourceClass;
026    import org.sonar.squid.measures.Metric;
027    
028    import com.puppycrawl.tools.checkstyle.api.DetailAST;
029    import com.puppycrawl.tools.checkstyle.api.TokenTypes;
030    
031    public class ClassVisitor extends AstVisitor {
032    
033      private static final List<Integer> wantedTokens = Arrays.asList(TokenTypes.CLASS_DEF, TokenTypes.INTERFACE_DEF, TokenTypes.ENUM_DEF,
034                                                          TokenTypes.ANNOTATION_DEF);
035    
036      @Override
037      public List<Integer> getWantedTokens() {
038        return wantedTokens;
039      }
040    
041      @Override
042      public void visitToken(DetailAST ast) {
043        String className = ast.findFirstToken(TokenTypes.IDENT).getText();
044        SourceClass unit = createClassResource(className);
045        unit.setStartAtLine(ast.getLineNo());
046        if (isInterface(ast.getType())) {
047          unit.setMeasure(Metric.INTERFACES, 1);
048        }
049        if (isAbstract(ast)) {
050          unit.setMeasure(Metric.ABSTRACT_CLASSES, 1);
051        }
052      }
053    
054      private boolean isAbstract(DetailAST ast) {
055        final DetailAST abstractAST = ast.findFirstToken(TokenTypes.MODIFIERS).findFirstToken(TokenTypes.ABSTRACT);
056        return abstractAST != null;
057      }
058    
059      private boolean isInterface(int type) {
060        if (type == TokenTypes.INTERFACE_DEF) {
061          return true;
062        }
063        return false;
064      }
065    
066      private SourceClass createClassResource(String className) {
067        if (peekResource().isType(SourceClass.class)) {
068          addResource(SourceClass.create((SourceClass) peekResource(), className));
069        } else {
070          addResource(SourceClass.create(peekParentPackage(), className));
071        }
072        return (SourceClass) peekResource();
073      }
074    
075      @Override
076      public void leaveToken(DetailAST ast) {
077        popResource();
078      }
079    }