edu.umd.cs.findbugs

Class FuzzyBugComparator

public class FuzzyBugComparator extends Object implements WarningComparator

A slightly more intellegent way of comparing BugInstances from two versions to see if they are the "same". Uses class and method hashes to try to handle renamings, at least for simple cases. (Hashes disabled for the time being.) Uses opcode context to try to identify code that is the same, even if it moves within the method. Also compares by bug abbreviation rather than bug type, since the "same" bug can change type if the context changes (e.g., "definitely null" to "null on simple path" for a null pointer dereference). Also, we often change bug types between different versions of FindBugs.

Author: David Hovemeyer

Constructor Summary
	FuzzyBugComparator() Map of class hashes to canonicate class names used for comparison purposes.

Method Summary
int	compare(BugInstance lhs, BugInstance rhs)
int	compareClasses(BugCollection lhsCollection, BugCollection rhsCollection, ClassAnnotation lhsClass, ClassAnnotation rhsClass)
int	compareClassesByName(BugCollection lhsCollection, BugCollection rhsCollection, String lhsClassName, String rhsClassName)
int	compareMethods(BugCollection lhsCollection, BugCollection rhsCollection, MethodAnnotation lhsMethod, MethodAnnotation rhsMethod)
int	compareSourceLines(BugCollection lhsCollection, BugCollection rhsCollection, SourceLineAnnotation lhs, SourceLineAnnotation rhs) Compare source line annotations.
static boolean	ignore(BugAnnotation annotation)
void	registerBugCollection(BugCollection bugCollection) Register a BugCollection.
void	setClassNameRewriter(ClassNameRewriter classNameRewriter)

Parameters: rhsCollection lhs BugCollection lhsCollection rhs BugCollection lhs a SourceLineAnnotation rhs another SourceLineAnnotation

Returns: comparison of lhs and rhs

Class FuzzyBugComparator

Constructor Detail

FuzzyBugComparator

Method Detail

compare

compareClasses

compareClassesByName

compareMethods

compareSourceLines

ignore

registerBugCollection

setClassNameRewriter