Package org.checkerframework.checker.interning

Class InterningChecker

java.lang.Object

javax.annotation.processing.AbstractProcessor

org.checkerframework.javacutil.AbstractTypeProcessor

org.checkerframework.framework.source.SourceChecker

org.checkerframework.common.basetype.BaseTypeChecker

org.checkerframework.checker.interning.InterningChecker

All Implemented Interfaces:

Processor, OptionConfiguration

@StubFiles({"com-sun.astub","org-jcp.astub","org-xml.astub","sun.astub"})
@SupportedLintOptions("dotequals")
@SupportedOptions("checkclass")
public final class InterningChecker
extends BaseTypeChecker

A type-checker plug-in for the Interned qualifier that finds (and verifies the absence of) equality-testing and interning errors.

The Interned annotation indicates that a variable refers to the canonical instance of an object, meaning that it is safe to compare that object using the "==" operator. This plugin warns whenever "==" is used in cases where one or both operands are not Interned. Optionally, it suggests using "==" instead of ".equals" where possible.

See the Checker Framework Manual:

Interning Checker

Field Summary

Fields inherited from class org.checkerframework.framework.source.SourceChecker

currentRoot, DETAILS_SEPARATOR, elements, elementsWithSuppressedWarnings, errsOnLastExit, javacErrored, messager, messagesProperties, MSGS_FILE, OPTION_SEPARATOR, parentChecker, SUPPRESS_ALL_MESSAGE_KEY, SUPPRESS_ALL_PREFIX, trees, types, UNNEEDED_SUPPRESSION_KEY, upstreamCheckerNames, useAllcheckersPrefix, visitor

Fields inherited from class javax.annotation.processing.AbstractProcessor

processingEnv

Constructor Summary

Constructors

Constructor	Description
InterningChecker()

Method Summary

Methods inherited from class org.checkerframework.common.basetype.BaseTypeChecker

createSourceVisitor, createSourceVisitorPublic, getAnnotationProvider, getExtraStubFiles, getImmediateSubcheckerClasses, getOptions, getOptionsNoSubcheckers, getRelatedClassName, getSubchecker, getSubcheckers, getSupportedLintOptions, getSupportedOptions, getSuppressWarningsPrefixesOfSubcheckers, getTreePathCacher, getTypeFactory, getTypeFactoryOfSubchecker, getUltimateParentChecker, getVisitor, hasOptionNoSubcheckers, initChecker, invokeConstructorFor, printOrStoreMessage, processArg, reportJavacError, setRoot, shouldAddShutdownHook, shouldResolveReflection, shutdownHook, typeProcess, typeProcessingOver, warnUnneededSuppressions

Methods inherited from class org.checkerframework.framework.source.SourceChecker

addOptions, createSupportedLintOptions, expandCFOptions, fullMessageOf, getBooleanOption, getBooleanOption, getElementUtils, getLintOption, getLintOption, getMessagesProperties, getOption, getOption, getOptionConfiguration, getParentChecker, getPathToCompilationUnit, getProcessingEnvironment, getProperties, getStandardSuppressWarningsPrefixes, getSupportedAnnotationTypes, getSupportedSourceVersion, getSuppressWarningsPrefixes, getTreeUtils, getTypeUtils, getUpstreamCheckerNames, hasOption, init, message, message, printOrStoreMessage, printStats, report, reportError, reportWarning, setLintOption, setParentChecker, setProcessingEnvironment, setSupportedLintOptions, shouldSkipDefs, shouldSkipDefs, shouldSkipUses, shouldSkipUses, shouldSuppressWarnings, shouldSuppressWarnings, shouldSuppressWarnings, typeProcessingStart, useConservativeDefault, warnUnneededSuppressions

Methods inherited from class org.checkerframework.javacutil.AbstractTypeProcessor

getCompilerLog, process

Methods inherited from class javax.annotation.processing.AbstractProcessor

getCompletions, isInitialized

Methods inherited from class java.lang.Object

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

Constructor Details

InterningChecker

public InterningChecker()