emacsbugreporter.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;

import java.io.IOException;
import java.util.*;

import edu.umd.cs.findbugs.ba.SourceFinder;
import org.apache.bcel.classfile.JavaClass;

/**
 * BugReporter to output warnings in Emacs format.
 *
 * @author David Li
 */
public class EmacsBugReporter extends TextUIBugReporter {

	private HashSet<BugInstance> seenAlready = new HashSet<BugInstance>();

	public void observeClass(JavaClass javaClass) {
		// Don't need to do anything special, since we won't be
		// reporting statistics.
	}

	protected void printBug(BugInstance bugInstance) {
		SourceLineAnnotation line =
		        bugInstance.getPrimarySourceLineAnnotation();
		if (line == null) {
			outputStream.print(bugInstance.getMessage());
		} else {
			SourceFinder sourceFinder = getEngine().getAnalysisContext().getSourceFinder();
			String fullPath;
			String pkgName = line.getPackageName();
			try {
				fullPath = sourceFinder.findSourceFile(pkgName, line.getSourceFile()).getFullFileName();
			} catch (IOException e) {
				if (pkgName.equals(""))
					fullPath = line.getSourceFile();
				else
					fullPath = pkgName.replace('.', '/') + "/" + line.getSourceFile();
			}

			outputStream.print(fullPath + ":"
			        + line.getStartLine() + ":"
			        + line.getEndLine() + " "
			        + bugInstance.getMessage());
		}

		switch (bugInstance.getPriority()) {
		case Detector.EXP_PRIORITY:
			outputStream.print(" (E) ");
			break;
		case Detector.LOW_PRIORITY:
			outputStream.print(" (L) ");
			break;
		case Detector.NORMAL_PRIORITY:
			outputStream.print(" (M) ");
			break;
		case Detector.HIGH_PRIORITY:
			outputStream.print(" (H) ");
			break;
		}

		outputStream.println();
	}

	protected void doReportBug(BugInstance bugInstance) {
		if (seenAlready.add(bugInstance)) {
			printBug(bugInstance);
			notifyObservers(bugInstance);
		}
	}

	public void finish() {
		outputStream.close();
	}
}

/*
 * Local Variables:
 * eval: (c-set-style "bsd")
 * End:
 */