Package edu.umd.cs.findbugs.classfile.impl

Class AnalysisCache

java.lang.Object

edu.umd.cs.findbugs.classfile.impl.AnalysisCache

All Implemented Interfaces:

IAnalysisCache

public class AnalysisCache
extends java.lang.Object
implements IAnalysisCache

Implementation of IAnalysisCache. This object is responsible for registering class and method analysis engines and caching analysis results.

Author:

David Hovemeyer

Method Summary

Modifier and Type	Method	Description
void	dispose()	Cleans up all cached data
<E> void	eagerlyPutDatabase(java.lang.Class<E> databaseClass, E database)	Eagerly install a database.
<E> void	eagerlyPutMethodAnalysis(java.lang.Class<E> analysisClass, MethodDescriptor methodDescriptor, E analysisObject)	Eagerly put a method analysis object in the cache.
java.util.Map<?,?>	getAnalysisLocals()	Get map of analysis-local objects.
java.util.Map<ClassDescriptor,java.lang.Object>	getClassAnalysis(java.lang.Class<?> analysisClass)
<E> E	getClassAnalysis(java.lang.Class<E> analysisClass, ClassDescriptor classDescriptor)	Get an analysis of the given class.
IClassPath	getClassPath()	Get the classpath from which classes are loaded.
<E> E	getDatabase(java.lang.Class<E> databaseClass)	Get a database.
<E> E	getDatabase(java.lang.Class<E> databaseClass, boolean optional)
IErrorLogger	getErrorLogger()	Get the error logger.
<E> E	getMethodAnalysis(java.lang.Class<E> analysisClass, MethodDescriptor methodDescriptor)	Get an analysis of the given method.
<E> E	getOptionalDatabase(java.lang.Class<E> databaseClass)
Profiler	getProfiler()	Get the analysis profiler instance, never null
<E> E	probeClassAnalysis(java.lang.Class<E> analysisClass, ClassDescriptor classDescriptor)	See if the cache contains a cached class analysis result for given class descriptor.
void	purgeAllMethodAnalysis()	Purge all method analysis results for all methods.
void	purgeClassAnalysis(java.lang.Class<?> analysisClass)	Purge all class analysis results of a particular kind
void	purgeMethodAnalyses(MethodDescriptor methodDescriptor)	Purge all analysis results for given method.
<E> void	registerClassAnalysisEngine(java.lang.Class<E> analysisResultType, IClassAnalysisEngine<E> classAnalysisEngine)	Register the given class analysis engine as producing the analysis result type whose Class is given.
<E> void	registerDatabaseFactory(java.lang.Class<E> databaseClass, IDatabaseFactory<E> databaseFactory)	Register a database factory.
<E> void	registerMethodAnalysisEngine(java.lang.Class<E> analysisResultType, IMethodAnalysisEngine<E> methodAnalysisEngine)	Register the given method analysis engine as producing the analysis result type whose Class is given.
<E> void	reuseClassAnalysis(java.lang.Class<E> analysisClass, java.util.Map<ClassDescriptor,java.lang.Object> map)	Adds the data for given analysis type from given map to the cache

Methods inherited from class java.lang.Object

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

Method Detail

getAnalysisLocals

public final java.util.Map<?,?> getAnalysisLocals()

Description copied from interface: IAnalysisCache

Get map of analysis-local objects.

Specified by:

getAnalysisLocals in interface IAnalysisCache

getClassPath

public IClassPath getClassPath()

Description copied from interface: IAnalysisCache

Get the classpath from which classes are loaded.

Specified by:

getClassPath in interface IAnalysisCache

Returns:

the classpath

purgeAllMethodAnalysis

public void purgeAllMethodAnalysis()

Description copied from interface: IAnalysisCache

Purge all method analysis results for all methods.

Specified by:

purgeAllMethodAnalysis in interface IAnalysisCache

purgeClassAnalysis

public void purgeClassAnalysis(java.lang.Class<?> analysisClass)

Description copied from interface: IAnalysisCache

Purge all class analysis results of a particular kind

Specified by:

purgeClassAnalysis in interface IAnalysisCache

dispose

public void dispose()

Cleans up all cached data

getClassAnalysis

@CheckForNull
public java.util.Map<ClassDescriptor,java.lang.Object> getClassAnalysis(java.lang.Class<?> analysisClass)

Parameters:

analysisClass - non null analysis type

Returns:

map with analysis data for given type, can be null

reuseClassAnalysis

public <E> void reuseClassAnalysis(java.lang.Class<E> analysisClass,
                                   java.util.Map<ClassDescriptor,java.lang.Object> map)

Adds the data for given analysis type from given map to the cache

Parameters:

analysisClass - non null analysis type

map - non null, pre-filled map with analysis data for given type

getClassAnalysis

public <E> E getClassAnalysis(java.lang.Class<E> analysisClass,
                              @Nonnull
                              ClassDescriptor classDescriptor)
                       throws CheckedAnalysisException

Description copied from interface: IAnalysisCache

Get an analysis of the given class.

Specified by:

getClassAnalysis in interface IAnalysisCache

Type Parameters:

E - the type of the analysis (e.g., FoobarAnalysis)

Parameters:

analysisClass - the analysis class object (e.g., FoobarAnalysis.class)

classDescriptor - the descriptor of the class to analyze

Returns:

the analysis object (e.g., instance of FoobarAnalysis for the class)

Throws:

CheckedAnalysisException - if an error occurs performing the analysis

probeClassAnalysis

public <E> E probeClassAnalysis(java.lang.Class<E> analysisClass,
                                @Nonnull
                                ClassDescriptor classDescriptor)

Description copied from interface: IAnalysisCache

See if the cache contains a cached class analysis result for given class descriptor.

Specified by:

probeClassAnalysis in interface IAnalysisCache

Parameters:

analysisClass - analysis result class

classDescriptor - the class descriptor

Returns:

a cached analysis result, or null if there is no cached analysis result

getMethodAnalysis

public <E> E getMethodAnalysis(java.lang.Class<E> analysisClass,
                               @Nonnull
                               MethodDescriptor methodDescriptor)
                        throws CheckedAnalysisException

Description copied from interface: IAnalysisCache

Get an analysis of the given method.

Specified by:

getMethodAnalysis in interface IAnalysisCache

Type Parameters:

E - the type of the analysis (e.g., FoobarAnalysis)

Parameters:

analysisClass - the analysis class object (e.g., FoobarAnalysis.class)

methodDescriptor - the descriptor of the method to analyze

Returns:

the analysis object (e.g., instance of FoobarAnalysis for the method)

Throws:

CheckedAnalysisException - if an error occurs performing the analysis

eagerlyPutMethodAnalysis

public <E> void eagerlyPutMethodAnalysis(java.lang.Class<E> analysisClass,
                                         @Nonnull
                                         MethodDescriptor methodDescriptor,
                                         E analysisObject)

Description copied from interface: IAnalysisCache

Eagerly put a method analysis object in the cache. This can be necessary if an method analysis engine invokes other analysis engines that might recursively require the analysis being produced.

Specified by:

eagerlyPutMethodAnalysis in interface IAnalysisCache

Type Parameters:

E - the type of the analysis (e.g., FoobarAnalysis)

Parameters:

analysisClass - the analysis class object (e.g., FoobarAnalysis.class)

methodDescriptor - the descriptor of the method to analyze

purgeMethodAnalyses

public void purgeMethodAnalyses(@Nonnull
                                MethodDescriptor methodDescriptor)

Description copied from interface: IAnalysisCache

Purge all analysis results for given method. This can be called when a CFG is pruned and we want to compute more accurate analysis results on the new CFG.

Specified by:

purgeMethodAnalyses in interface IAnalysisCache

Parameters:

methodDescriptor - method whose analysis results should be purged

registerClassAnalysisEngine

public <E> void registerClassAnalysisEngine(java.lang.Class<E> analysisResultType,
                                            IClassAnalysisEngine<E> classAnalysisEngine)

Description copied from interface: IAnalysisCache

Register the given class analysis engine as producing the analysis result type whose Class is given.

Specified by:

registerClassAnalysisEngine in interface IAnalysisCache

Type Parameters:

E - analysis result type

Parameters:

analysisResultType - analysis result type Class object

classAnalysisEngine - the class analysis engine to register

registerMethodAnalysisEngine

public <E> void registerMethodAnalysisEngine(java.lang.Class<E> analysisResultType,
                                             IMethodAnalysisEngine<E> methodAnalysisEngine)

Description copied from interface: IAnalysisCache

Register the given method analysis engine as producing the analysis result type whose Class is given.

Specified by:

registerMethodAnalysisEngine in interface IAnalysisCache

Type Parameters:

E - analysis result type

Parameters:

analysisResultType - analysis result type Class object

methodAnalysisEngine - the method analysis engine to register

registerDatabaseFactory

public <E> void registerDatabaseFactory(java.lang.Class<E> databaseClass,
                                        IDatabaseFactory<E> databaseFactory)

Description copied from interface: IAnalysisCache

Register a database factory.

Specified by:

registerDatabaseFactory in interface IAnalysisCache

Type Parameters:

E - type of database

Parameters:

databaseClass - Class of database

databaseFactory - the database factory

getDatabase

public <E> E getDatabase(java.lang.Class<E> databaseClass)

Description copied from interface: IAnalysisCache

Get a database. Note: an unchecked analysis exception will be thrown if the database cannot be instantiated. Since instantiation of most kinds of databases simply involves creating an object (and not opening a file or other failure-prone operation), throwing a CheckedAnalysisException creates too great of an exception-handling burden on analyses and detectors which use databases.

Specified by:

getDatabase in interface IAnalysisCache

Type Parameters:

E - type of database

Parameters:

databaseClass - Class of database

Returns:

the database (which is created by a database factory if required)

getOptionalDatabase

@CheckForNull
public <E> E getOptionalDatabase(java.lang.Class<E> databaseClass)

Specified by:

getOptionalDatabase in interface IAnalysisCache

getDatabase

public <E> E getDatabase(java.lang.Class<E> databaseClass,
                         boolean optional)

eagerlyPutDatabase

public <E> void eagerlyPutDatabase(java.lang.Class<E> databaseClass,
                                   E database)

Description copied from interface: IAnalysisCache

Eagerly install a database. This avoids the need to register a database factory.

Specified by:

eagerlyPutDatabase in interface IAnalysisCache

Type Parameters:

E - type of database

Parameters:

databaseClass - Class of database

database - database object

getErrorLogger

public IErrorLogger getErrorLogger()

Description copied from interface: IAnalysisCache

Get the error logger.

Specified by:

getErrorLogger in interface IAnalysisCache

Returns:

the error logger

getProfiler

public Profiler getProfiler()

Description copied from interface: IAnalysisCache

Get the analysis profiler instance, never null

Specified by:

getProfiler in interface IAnalysisCache