@SupportedOptions(value={"suppressWarnings","skipUses","onlyUses","skipDefs","onlyDefs","ignoreRawTypeArguments","assumeSideEffectFree","assumeAssertionsAreEnabled","assumeAssertionsAreDisabled","warns","checkPurityAnnotations","invariantArrays","checkCastElementType","useDefaultsForUncheckedCode","concurrentSemantics","conservativeUninferredTypeArguments","lint","suggestPureMethods","resolveReflection","infer","showSuppressWarningKeys","stubs","stubWarnIfNotFound","stubWarnIfOverwritesBytecode","printAllQualifiers","printVerboseGenerics","detailedmsgtext","printErrorStack","nomsgtext","ignorejdkastub","nocheckjdk","stubDebug","filenames","showchecks","showInferenceSteps","cfgviz","flowdotdir","verbosecfg","resourceStats","atfCacheSize","atfDoNotCache"}) public abstract class SourceChecker extends AbstractTypeProcessor implements ErrorHandler, CFContext, OptionConfiguration
javac's annotation processing
 API, routines for error reporting via the JSR 199 compiler API, and an implementation for using a
 SourceVisitor to perform the type-checking.
 Subclasses must implement the following methods: (TODO: update the list)
getMessages() (for type-qualifier specific error messages)
   createSourceVisitor() (for a custom SourceVisitor)
   getSuppressWarningsKeys() (for honoring @{link
       SuppressWarnings} annotations)
 BaseTypeChecker, instead of this class.
 Only checkers that require annotated types but not subtype checking (e.g. for testing purposes)
 should extend this. Non-type checkers (e.g. for enforcing coding styles) should extend AbstractProcessor (or even this class) as the Checker Framework is not designed for such
 checkers.| Modifier and Type | Class and Description | 
|---|---|
| static class  | SourceChecker.CheckerErrorException type used only internally to abort processing. | 
| Modifier and Type | Field and Description | 
|---|---|
| protected CompilationUnitTree | currentRootThe source tree that is being scanned. | 
| static String | DETAILS_SEPARATOR | 
| protected int | errsOnLastExitThe number of errors at the last exit of the type processor. | 
| protected Messager | messagerUsed to report error messages and warnings via the compiler. | 
| protected Properties | messagesMaps error keys to localized/custom error messages. | 
| protected static String | MSGS_FILEFile name of the localized messages. | 
| protected SourceChecker | parentCheckerThe checker that called this one, whether that be a BaseTypeChecker (used as a compound
 checker) or an AggregateChecker. | 
| protected static String | SUPPRESS_ALL_KEYThe @SuppressWarnings key that will suppress warnings for all checkers. | 
| protected Trees | treesUsed as a helper for the  SourceVisitor. | 
| protected List<String> | upstreamCheckerNamesList of upstream checker names. | 
| protected SourceVisitor<?,?> | visitorThe visitor to use. | 
processingEnv| Constructor and Description | 
|---|
| SourceChecker() | 
| Modifier and Type | Method and Description | 
|---|---|
| protected void | addOptions(Map<String,String> moreopts)Add additional active options. | 
| protected abstract SourceVisitor<?,?> | createSourceVisitor()Provides the  SourceVisitorthat the checker should use to scan input source trees. | 
| protected Set<String> | createSupportedLintOptions()Compute the set of supported lint options. | 
| void | errorAbort(String msg)Log an error message and abort processing. | 
| void | errorAbort(String msg,
          Throwable cause)Log an error message and abort processing. | 
| protected Collection<String> | expandCFOptions(List<? extends Class<?>> clazzPrefixes,
               String[] options)Generate the possible command-line option names by prefixing each class name from  classPrefixestooptions, separated byOPTION_SEPARATOR. | 
| protected String | formatStackTrace(StackTraceElement[] stackTrace)Format a list of  StackTraceElements to be printed out as an error message. | 
| protected String | fullMessageOf(String messageKey,
             String defValue)Returns the localized long message corresponding for this key, and returns the defValue if no
 localized message is found. | 
| AnnotationProvider | getAnnotationProvider() | 
| SourceChecker | getChecker() | 
| CFContext | getContext() | 
| Elements | getElementUtils() | 
| boolean | getLintOption(String name)Determines the value of the lint option with the given name. | 
| boolean | getLintOption(String name,
             boolean def)Determines the value of the lint option with the given name. | 
| Properties | getMessages()Provides a mapping of error keys to custom error messages. | 
| String | getOption(String name)Determines the value of the option with the given name. | 
| String | getOption(String name,
         String def)Determines the value of the lint option with the given name and returns the default value if
 nothing is specified. | 
| OptionConfiguration | getOptionConfiguration() | 
| Map<String,String> | getOptions()Return all active options for this checker. | 
| ProcessingEnvironment | getProcessingEnvironment() | 
| protected Properties | getProperties(Class<?> cls,
             String filePath)A helper function to parse a Properties file | 
| protected Collection<String> | getStandardSuppressWarningsKeys()Determine the standard set of suppress warning keys usable for any checker. | 
| Set<String> | getSupportedAnnotationTypes()Overrides the default implementation to always return a singleton set containing only "*". | 
| Set<String> | getSupportedLintOptions()Returns the lint options recognized by this checker. | 
| Set<String> | getSupportedOptions()Map the Checker Framework version of  SupportedOptionsto the standard annotation
 provided versionSupportedOptions. | 
| SourceVersion | getSupportedSourceVersion() | 
| Collection<String> | getSuppressWarningsKeys() | 
| Trees | getTreeUtils() | 
| Types | getTypeUtils() | 
| List<String> | getUpstreamCheckerNames()Return a list containing this checker name and all checkers it is a part of (that is,
 checkers that called it). | 
| SourceVisitor<?,?> | getVisitor() | 
| boolean | hasOption(String name)Check whether the given option is provided. | 
| void | init(ProcessingEnvironment env) | 
| void | initChecker()Initialize the checker. | 
| void | message(Diagnostic.Kind kind,
       String msg,
       Object... args)Print a non-localized message using the javac messager. | 
| protected void | printMessage(Diagnostic.Kind kind,
            String message,
            Tree source,
            CompilationUnitTree root)Do not call this method directly. | 
| protected void | printStats()Print resource usage statistics | 
| protected Object | processArg(Object arg)Process an argument to an error message before it is passed to String.format. | 
| void | report(Result r,
      Object src)Reports a result. | 
| protected void | setLintOption(String name,
             boolean val)Set the value of the lint option with the given name. | 
| protected void | setParentChecker(SourceChecker parentChecker) | 
| protected void | setProcessingEnvironment(ProcessingEnvironment env) | 
| protected void | setSupportedLintOptions(Set<String> newlints)Set the supported lint options. | 
| protected boolean | shouldAddShutdownHook()Return true to indicate that method  shutdownHook()should be added as a shutdownHook
 of the JVM. | 
| boolean | shouldSkipDefs(ClassTree node)Tests whether the class definition should not be checked because it matches the  checker.skipDefsproperty. | 
| boolean | shouldSkipDefs(ClassTree cls,
              MethodTree meth)Tests whether the method definition should not be checked because it matches the  checker.skipDefsproperty. | 
| boolean | shouldSkipUses(Element element)Tests whether the class owner of the passed element is an unannotated class and matches the
 pattern specified in the  checker.skipUsesproperty. | 
| boolean | shouldSkipUses(String typeName)Tests whether the class owner of the passed type matches the pattern specified in the  checker.skipUsesproperty. | 
| boolean | shouldSuppressWarnings(@Nullable Element elt,
                      String errKey)Determines whether all the warnings pertaining to a given tree should be suppressed. | 
| boolean | shouldSuppressWarnings(Tree tree,
                      String errKey)Determines whether all the warnings pertaining to a given tree should be suppressed. | 
| protected void | shutdownHook()Method that gets called exactly once at shutdown time of the JVM. | 
| String | treeToFilePositionString(Tree tree,
                        CompilationUnitTree currentRoot,
                        ProcessingEnvironment processingEnv)For the given tree, compute the source positions for that tree. | 
| void | typeProcess(TypeElement e,
           TreePath p)Type-check the code with Java specifications and then runs the Checker Rule Checking visitor
 on the processed source. | 
| void | typeProcessingStart()A method to be called once before the first call to typeProcess. | 
| void | userErrorAbort(String msg)Log a user error message and abort processing. | 
| boolean | useUncheckedCodeDefault(String kindOfCode)Should unchecked code defaults be used for the kind of code indicated by the parameter | 
process, typeProcessingOvergetCompletions, isInitializedprotected static final String SUPPRESS_ALL_KEY
protected static final String MSGS_FILE
protected Properties messages
protected Messager messager
protected Trees trees
SourceVisitor.protected CompilationUnitTree currentRoot
protected SourceVisitor<?,?> visitor
protected SourceChecker parentChecker
protected List<String> upstreamCheckerNames
protected int errsOnLastExit
public static final String DETAILS_SEPARATOR
public final void init(ProcessingEnvironment env)
AbstractTypeProcessorRegister a TaskListener that will get called after FLOW.
init in interface Processorinit in class AbstractTypeProcessorpublic ProcessingEnvironment getProcessingEnvironment()
getProcessingEnvironment in interface BaseContextProcessingEnvironment that was supplied to this checkerprotected void setProcessingEnvironment(ProcessingEnvironment env)
protected void setParentChecker(SourceChecker parentChecker)
public List<String> getUpstreamCheckerNames()
public SourceChecker getChecker()
getChecker in interface CFContextpublic OptionConfiguration getOptionConfiguration()
getOptionConfiguration in interface BaseContextpublic Elements getElementUtils()
getElementUtils in interface BaseContextpublic Types getTypeUtils()
getTypeUtils in interface BaseContextpublic Trees getTreeUtils()
getTreeUtils in interface BaseContextpublic SourceVisitor<?,?> getVisitor()
getVisitor in interface CFContextprotected abstract SourceVisitor<?,?> createSourceVisitor()
SourceVisitor that the checker should use to scan input source trees.SourceVisitor to use to scan source treespublic AnnotationProvider getAnnotationProvider()
getAnnotationProvider in interface BaseContextpublic Properties getMessages()
As a default, this implementation builds a Properties out of file messages.properties. It accumulates all the properties files in the Java class hierarchy
 from the checker up to SourceChecker. This permits subclasses to inherit default
 messages while being able to override them.
Properties that maps error keys to error message textpublic void errorAbort(String msg)
errorAbort in interface ErrorHandlermsg - the error message to logpublic void errorAbort(String msg, Throwable cause)
errorAbort in interface ErrorHandlermsg - the error message to logcause - the original error causepublic void userErrorAbort(String msg)
errorAbort(String) this
 method presents a more user-friendly output.msg - the error message to logpublic void typeProcessingStart()
Subclasses may override this method to do any initialization work.
Type-checkers are not supposed to override this. Instead use initChecker. This allows us to handle CheckerError only here and doesn't require all overriding implementations to be aware of CheckerError.
typeProcessingStart in class AbstractTypeProcessorAbstractProcessor.init(ProcessingEnvironment), 
initChecker()public void initChecker()
protected boolean shouldAddShutdownHook()
shutdownHook() should be added as a shutdownHook
 of the JVM.protected void shutdownHook()
protected void printStats()
public void typeProcess(TypeElement e, TreePath p)
typeProcess in class AbstractTypeProcessore - element of the analyzed classp - the tree path to the element, with the leaf being a ClassTreeProcessor.process(Set, RoundEnvironment)protected String formatStackTrace(StackTraceElement[] stackTrace)
StackTraceElements to be printed out as an error message.protected String fullMessageOf(String messageKey, String defValue)
protected void printMessage(Diagnostic.Kind kind, String message, Tree source, CompilationUnitTree root)
report(Result, Object) instead. (This method
 exists so that the BaseTypeChecker can override it and treat messages from compound checkers
 differently.)protected Object processArg(Object arg)
arg - the argumentpublic void message(Diagnostic.Kind kind, String msg, Object... args)
report(Result,
 Object).kind - the kind of message to printmsg - the message textargs - optional arguments to substitute in the messagereport(Result, Object)public String treeToFilePositionString(Tree tree, CompilationUnitTree currentRoot, ProcessingEnvironment processingEnv)
tree - tree to locate within the current compilation unitcurrentRoot - the current compilation unitprocessingEnv - the current processing environmentpublic boolean shouldSuppressWarnings(Tree tree, String errKey)
getSuppressWarningsKeys() method.tree - the tree that might be a source of a warningerrKey - the error key the checker is emittingpublic boolean useUncheckedCodeDefault(String kindOfCode)
kindOfCode - source or bytecodepublic boolean shouldSuppressWarnings(@Nullable Element elt, String errKey)
getSuppressWarningsKeys() method.elt - the Element that might be a source of, or related to, a warningerrKey - the error key the checker is emitting@SuppressWarnings annotation; false
     otherwisepublic void report(Result r, Object src)
r - the result to reportsrc - the position object associated with the resultpublic final boolean getLintOption(String name)
name - the name of the lint option to check forIllegalArgumentException - if the option name is not recognized via the SupportedLintOptions annotation or the getSupportedLintOptions()
     methodgetLintOption(String, boolean)public final boolean getLintOption(String name, boolean def)
name - the name of the lint option to check fordef - the default option value, returned if the option was not givendef if it was not given at allIllegalArgumentException - if the option name is not recognized via the SupportedLintOptions annotation or the getSupportedLintOptions()
     methodgetLintOption(String), 
getOption(String)protected final void setLintOption(String name, boolean val)
name - the name of the lint option to setval - the option valueIllegalArgumentException - if the option name is not recognized via the SupportedLintOptions annotation or the getSupportedLintOptions()
     methodgetLintOption(String), 
getLintOption(String,boolean)public Set<String> getSupportedLintOptions()
getLintOption(java.lang.String).Set of the lint options recognized by this checkerprotected Set<String> createSupportedLintOptions()
protected void setSupportedLintOptions(Set<String> newlints)
protected void addOptions(Map<String,String> moreopts)
public final String getOption(String name)
getOption in interface OptionConfigurationgetLintOption(String,boolean)public Map<String,String> getOptions()
getOptions in interface OptionConfigurationpublic final boolean hasOption(String name)
Note that getOption(String) can still return null even if hasOption
 returns true: this happens e.g. for -Amyopt
hasOption in interface OptionConfigurationname - the option name to checkpublic final String getOption(String name, String def)
getOption in interface OptionConfigurationgetOption(String), 
getLintOption(String)public Set<String> getSupportedOptions()
SupportedOptions to the standard annotation
 provided version SupportedOptions.getSupportedOptions in interface ProcessorgetSupportedOptions in interface OptionConfigurationgetSupportedOptions in class AbstractProcessorprotected Collection<String> expandCFOptions(List<? extends Class<?>> clazzPrefixes, String[] options)
classPrefixes to options, separated by OPTION_SEPARATOR.clazzPrefixes - the classes to prefixoptions - the option namespublic final Set<String> getSupportedAnnotationTypes()
javac uses this list to determine which classes process; javac only runs an annotation
 processor on classes that contain at least one of the mentioned annotations. Thus, the effect
 of returning "*" is as if the checker were annotated by
 @SupportedAnnotationTypes("*"): javac runs the checker on every class mentioned on
 the javac command line. This method also checks that subclasses do not contain a SupportedAnnotationTypes annotation.
 
To specify the annotations that a checker recognizes as type qualifiers, see AnnotatedTypeFactory.createSupportedTypeQualifiers().
getSupportedAnnotationTypes in interface ProcessorgetSupportedAnnotationTypes in class AbstractProcessorError - if a subclass is annotated with SupportedAnnotationTypespublic Collection<String> getSuppressWarningsKeys()
SuppressWarningsKeysprotected final Collection<String> getStandardSuppressWarningsKeys()
getSuppressWarningsKeys()public final boolean shouldSkipUses(Element element)
checker.skipUses property.element - an elementpublic final boolean shouldSkipUses(String typeName)
checker.skipUses property. In contrast to shouldSkipUses(Element) this version can
 also be used from primitive types, which don't have an element.typeName - the fully-qualified name of a typepublic final boolean shouldSkipDefs(ClassTree node)
checker.skipDefs property.node - class to potentially skippublic final boolean shouldSkipDefs(ClassTree cls, MethodTree meth)
checker.skipDefs property.
 TODO: currently only uses the class definition. Refine pattern. Same for skipUses.
cls - class to potentially skipmeth - method to potentially skipprotected Properties getProperties(Class<?> cls, String filePath)
cls - the class whose location is the base of the file pathfilePath - the name/path of the file to be readpublic final SourceVersion getSupportedSourceVersion()
getSupportedSourceVersion in interface ProcessorgetSupportedSourceVersion in class AbstractProcessor