org.antlr.v4.runtime

Class BailErrorStrategy

java.lang.Object

org.antlr.v4.runtime.DefaultErrorStrategy

org.antlr.v4.runtime.BailErrorStrategy

All Implemented Interfaces:

ANTLRErrorStrategy

public class BailErrorStrategy
extends DefaultErrorStrategy

Bail out of parser at first syntax error. Do this to use it:

myparser.setErrorHandler(new BailErrorStrategy());

Field Summary

Fields inherited from class org.antlr.v4.runtime.DefaultErrorStrategy

errorRecoveryMode, lastErrorIndex, lastErrorStates

Constructor Summary

Constructors

Constructor and Description
BailErrorStrategy()

Method Summary

Methods

Modifier and Type	Method and Description
void	recover(Parser recognizer, RecognitionException e) Instead of recovering from exception e, re-throw it wrapped in a ParseCancellationException so it is not caught by the rule function catches.
Token	recoverInline(Parser recognizer) Make sure we don't attempt to recover inline; if the parser successfully recovers, it won't throw an exception.
void	sync(Parser recognizer) Make sure we don't attempt to recover from problems in subrules.

Methods inherited from class org.antlr.v4.runtime.DefaultErrorStrategy

beginErrorCondition, consumeUntil, endErrorCondition, escapeWSAndQuote, getErrorRecoverySet, getExpectedTokens, getMissingSymbol, getSymbolText, getSymbolType, getTokenErrorDisplay, inErrorRecoveryMode, reportError, reportFailedPredicate, reportInputMismatch, reportMatch, reportMissingToken, reportNoViableAlternative, reportUnwantedToken, reset, singleTokenDeletion, singleTokenInsertion

Methods inherited from class java.lang.Object

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

Constructor Detail

BailErrorStrategy

public BailErrorStrategy()

Method Detail

recover

public void recover(Parser recognizer,
           RecognitionException e)

Instead of recovering from exception e, re-throw it wrapped in a ParseCancellationException so it is not caught by the rule function catches. Use Throwable.getCause() to get the original RecognitionException.

Specified by:

recover in interface ANTLRErrorStrategy

Overrides:

recover in class DefaultErrorStrategy

Parameters:

recognizer - the parser instance

e - the recognition exception to recover from

See Also:

ANTLRErrorStrategy.reportError(org.antlr.v4.runtime.Parser, org.antlr.v4.runtime.RecognitionException)

recoverInline

public Token recoverInline(Parser recognizer)
                    throws RecognitionException

Make sure we don't attempt to recover inline; if the parser successfully recovers, it won't throw an exception.

Specified by:

recoverInline in interface ANTLRErrorStrategy

Overrides:

recoverInline in class DefaultErrorStrategy

Parameters:

recognizer - the parser instance

Throws:

RecognitionException - if the error strategy was not able to recover from the unexpected input symbol

sync

public void sync(Parser recognizer)

Make sure we don't attempt to recover from problems in subrules.

Specified by:

sync in interface ANTLRErrorStrategy

Overrides:

sync in class DefaultErrorStrategy

Parameters:

recognizer - the parser instance

See Also:

DefaultErrorStrategy.sync(org.antlr.v4.runtime.Parser)