notecheckreturnvalue.java

一个查找java程序里bug的程序的源代码,该程序本身也是java写的,对提高java编程水平很有用

/*
 * FindBugs - Find bugs in Java programs
 * Copyright (C) 2003,2004 University of Maryland
 * 
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 * 
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

package edu.umd.cs.findbugs.detect;

import java.util.*;

import edu.umd.cs.findbugs.*;
import edu.umd.cs.findbugs.ba.bcp.Invoke;
import edu.umd.cs.findbugs.ba.AnalysisContext;
import edu.umd.cs.findbugs.ba.ClassContext;
import edu.umd.cs.findbugs.visitclass.AnnotationVisitor;
import org.apache.bcel.Repository;
import org.apache.bcel.classfile.*;
import edu.umd.cs.findbugs.visitclass.Constants2;
import static edu.umd.cs.findbugs.visitclass.Constants2.*;

public class NoteCheckReturnValue extends AnnotationVisitor 
  implements Detector, Constants2 {

	private BugReporter bugReporter;
        private AnalysisContext analysisContext;


	public NoteCheckReturnValue(BugReporter bugReporter) {

		this.bugReporter = bugReporter;
	}

	public void setAnalysisContext(AnalysisContext analysisContext) {
		this.analysisContext = analysisContext;
	}

	public void visitClassContext(ClassContext classContext) {
		classContext.getJavaClass().accept(this);
	}

        public void visitAnnotation(String annotationClass, Map<String, Object> map,
 boolean runtimeVisible)  {
		if (!annotationClass.endsWith("CheckReturnValue")) return;
		if (!visitingMethod()) return;
		BCPMethodReturnCheck.addMethodWhoseReturnMustBeChecked(
			"+" + getDottedClassName(),
			getMethodName(),
			getMethodSig(),
			getThisClass().isStatic() ? Invoke.STATIC : Invoke.ANY);
		}

	public void report() {
		}

}