Package edu.umd.cs.findbugs.detect

Class FindRefComparison

java.lang.Object

edu.umd.cs.findbugs.detect.FindRefComparison

All Implemented Interfaces:

ExtendedTypes, Detector, Priorities

public class FindRefComparison
extends Object
implements Detector, ExtendedTypes

Find suspicious reference comparisons. This includes:

• Strings and other java.lang objects compared by reference equality
• Calls to equals(Object) where the argument is a different type than the receiver object

Author:

David Hovemeyer, Bill Pugh

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	FindRefComparison.DynamicStringType	Type representing a dynamically created String.
static class	FindRefComparison.EmptyStringType
static class	FindRefComparison.FinalConstant
static class	FindRefComparison.ParameterStringType	Type representing a String passed as a parameter.
static class	FindRefComparison.StaticStringType	Type representing a static String.

Field Summary

Fields inherited from interface edu.umd.cs.findbugs.ba.type.ExtendedTypes

T_AVAIL_TYPE, T_BOTTOM, T_DOUBLE_EXTRA, T_EXCEPTION, T_LONG_EXTRA, T_NULL, T_TOP

Fields inherited from interface edu.umd.cs.findbugs.Priorities

EXP_PRIORITY, HIGH_PRIORITY, IGNORE_PRIORITY, LOW_PRIORITY, NORMAL_PRIORITY

Constructor Summary

Constructors

Constructor	Description
FindRefComparison(BugReporter bugReporter)

Method Summary

Modifier and Type	Method	Description
MethodDescriptor	getInvokedMethod(org.apache.bcel.generic.ConstantPoolGen cpg, org.apache.bcel.generic.InvokeInstruction inv)
MethodAnnotation	getMethodCalledAnnotation(org.apache.bcel.generic.ConstantPoolGen cpg, org.apache.bcel.generic.InvokeInstruction inv)
void	report()	This method is called after all classes to be visited.
void	visitClassContext(ClassContext classContext)	Visit the ClassContext for a class which should be analyzed for instances of bug patterns.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

FindRefComparison

public FindRefComparison(BugReporter bugReporter)

Method Details

visitClassContext

public void visitClassContext(ClassContext classContext)

Description copied from interface: Detector

Visit the ClassContext for a class which should be analyzed for instances of bug patterns.

Specified by:

visitClassContext in interface Detector

Parameters:

classContext - the ClassContext

getMethodCalledAnnotation

@CheckForNull
public MethodAnnotation getMethodCalledAnnotation(org.apache.bcel.generic.ConstantPoolGen cpg,
 org.apache.bcel.generic.InvokeInstruction inv)

getInvokedMethod

public MethodDescriptor getInvokedMethod(org.apache.bcel.generic.ConstantPoolGen cpg,
 org.apache.bcel.generic.InvokeInstruction inv)

report

public void report()

Description copied from interface: Detector

This method is called after all classes to be visited. It should be used by any detectors which accumulate information over all visited classes to generate results.

Specified by:

report in interface Detector