org.antlr.v4.runtime

Class RecognitionException

java.lang.Object

java.lang.Throwable

java.lang.Exception

java.lang.RuntimeException

org.antlr.v4.runtime.RecognitionException

All Implemented Interfaces:

Serializable

Direct Known Subclasses:

FailedPredicateException, InputMismatchException, LexerNoViableAltException, NoViableAltException

public class RecognitionException
extends RuntimeException

The root of the ANTLR exception hierarchy. In general, ANTLR tracks just 3 kinds of errors: prediction errors, failed predicate errors, and mismatched input errors. In each case, the parser knows where it is in the input, where it is in the ATN, the rule invocation stack, and what kind of problem occurred.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
RecognitionException(Recognizer<?,?> recognizer, IntStream input, ParserRuleContext ctx)
RecognitionException(String message, Recognizer<?,?> recognizer, IntStream input, ParserRuleContext ctx)

Method Summary

Methods

Modifier and Type	Method and Description
RuleContext	getCtx()
IntervalSet	getExpectedTokens()
IntStream	getInputStream()
int	getOffendingState() Where was the parser in the ATN when the error occurred? For No viable alternative exceptions, this is the decision state number.
Token	getOffendingToken()
Recognizer<?,?>	getRecognizer()
protected void	setOffendingState(int offendingState)
protected void	setOffendingToken(Token offendingToken)

Methods inherited from class java.lang.Throwable

addSuppressed, fillInStackTrace, getCause, getLocalizedMessage, getMessage, getStackTrace, getSuppressed, initCause, printStackTrace, printStackTrace, printStackTrace, setStackTrace, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

RecognitionException

public RecognitionException(@Nullable
                    Recognizer<?,?> recognizer,
                    IntStream input,
                    @Nullable
                    ParserRuleContext ctx)

RecognitionException

public RecognitionException(String message,
                    @Nullable
                    Recognizer<?,?> recognizer,
                    IntStream input,
                    @Nullable
                    ParserRuleContext ctx)

Method Detail

getOffendingState

public int getOffendingState()

Where was the parser in the ATN when the error occurred? For No viable alternative exceptions, this is the decision state number. For others, it is the state whose emanating edge we couldn't match. This will help us tie into the grammar and syntax diagrams in ANTLRWorks v2.

setOffendingState

protected final void setOffendingState(int offendingState)

getExpectedTokens

public IntervalSet getExpectedTokens()

getCtx

public RuleContext getCtx()

getInputStream

public IntStream getInputStream()

getOffendingToken

public Token getOffendingToken()

setOffendingToken

protected final void setOffendingToken(Token offendingToken)

getRecognizer

public Recognizer<?,?> getRecognizer()