Package edu.umd.cs.findbugs.classfile.engine.bcel

Class LoadedFieldSetFactory

java.lang.Object

edu.umd.cs.findbugs.classfile.engine.bcel.AnalysisFactory<LoadedFieldSet>

edu.umd.cs.findbugs.classfile.engine.bcel.LoadedFieldSetFactory

All Implemented Interfaces:

IAnalysisEngine<MethodDescriptor,ResultType>, IMethodAnalysisEngine<LoadedFieldSet>

public class LoadedFieldSetFactory
extends AnalysisFactory<LoadedFieldSet>

Factory to determine which fields are loaded and stored by the instructions in a method, and the overall method. The main purpose is to support efficient redundant load elimination and forward substitution in ValueNumberAnalysis (there is no need to remember stores of fields that are never read, or loads of fields that are only loaded in one location). However, it might be useful for other kinds of analysis.

The tricky part is that in addition to fields loaded and stored with get/putfield and get/putstatic, we also try to figure out field accessed through calls to inner-class access methods.

Constructor Summary

Constructors

Constructor	Description
LoadedFieldSetFactory()	Constructor.

Method Summary

Modifier and Type	Method	Description
LoadedFieldSet	analyze(IAnalysisCache analysisCache, MethodDescriptor descriptor)	Perform an analysis on class or method named by given descriptor.

Methods inherited from class edu.umd.cs.findbugs.classfile.engine.bcel.AnalysisFactory

getAssertionMethods, getCFG, getCompactLocationNumbering, getConstantPoolGen, getDepthFirstSearch, getExceptionSetFactory, getIsNullValueDataflow, getJavaClass, getLoadedFieldSet, getMethod, getMethodGen, getReverseDepthFirstSearch, getTypeDataflow, getValueNumberDataflow, registerWith, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

LoadedFieldSetFactory

public LoadedFieldSetFactory()

Constructor.

Method Detail

analyze

public LoadedFieldSet analyze(IAnalysisCache analysisCache,
                              MethodDescriptor descriptor)
                       throws CheckedAnalysisException

Description copied from interface: IAnalysisEngine

Perform an analysis on class or method named by given descriptor.

Parameters:

analysisCache - the analysis cache

descriptor - the descriptor of the class or method to be analyzed

Returns:

the result of the analysis of the class or method

Throws:

CheckedAnalysisException