001 /* 002 * Sonar, open source software quality management tool. 003 * Copyright (C) 2008-2011 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.visitor; 021 022 import java.util.HashSet; 023 import java.util.Set; 024 025 import org.sonar.java.bytecode.asm.AsmClass; 026 import org.sonar.java.bytecode.asm.AsmEdge; 027 import org.sonar.java.bytecode.asm.AsmMethod; 028 import org.sonar.squid.api.SourceCodeEdgeUsage; 029 import org.sonar.squid.measures.Metric; 030 031 public class RFCVisitor extends BytecodeVisitor { 032 033 private AsmClass asmClass; 034 private Set<AsmMethod> distinctCallToExternalMethods; 035 private int rfc = 0; 036 037 public void visitClass(AsmClass asmClass) { 038 rfc = 0; 039 this.asmClass = asmClass; 040 distinctCallToExternalMethods = new HashSet<AsmMethod>(); 041 } 042 043 public void visitMethod(AsmMethod asmMethod) { 044 if (asmMethod.isBodyLoaded() && !asmMethod.isAccessor()) { 045 rfc++; 046 } 047 } 048 049 public void visitEdge(AsmEdge edge) { 050 if (edge.getTargetAsmClass() != asmClass && edge.getUsage() == SourceCodeEdgeUsage.CALLS_METHOD 051 && !((AsmMethod) edge.getTo()).isAccessor()) { 052 distinctCallToExternalMethods.add((AsmMethod) edge.getTo()); 053 } 054 } 055 056 public void leaveClass(AsmClass asmClass) { 057 rfc += distinctCallToExternalMethods.size(); 058 getSourceClass(asmClass).add(Metric.RFC, rfc); 059 060 if (isMainPublicClassInFile(asmClass)) { 061 getSourceFile(asmClass).add(Metric.RFC, rfc); 062 } 063 } 064 }