org.antlr.v4.tool

Class GrammarParserInterpreter.BailButConsumeErrorStrategy

java.lang.Object

org.antlr.v4.runtime.DefaultErrorStrategy

org.antlr.v4.tool.GrammarParserInterpreter.BailButConsumeErrorStrategy

All Implemented Interfaces:

org.antlr.v4.runtime.ANTLRErrorStrategy

Enclosing class:

GrammarParserInterpreter

public static class GrammarParserInterpreter.BailButConsumeErrorStrategy
extends org.antlr.v4.runtime.DefaultErrorStrategy

We want to stop and track the first error but we cannot bail out like BailErrorStrategy as consume() constructs trees. We make sure to create an error node during recovery with this strategy. We consume() 1 token during the "bail out of rule" mechanism in recover() and let it fall out of the rule to finish constructing trees. For recovery in line, we throw InputMismatchException to engage recover().

Field Summary

Fields

Modifier and Type	Field and Description
int	firstErrorTokenIndex

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

errorRecoveryMode, lastErrorIndex, lastErrorStates, nextTokensContext, nextTokensState

Constructor Summary

Constructors

Constructor and Description
BailButConsumeErrorStrategy()

Method Summary

Modifier and Type	Method and Description
void	recover(org.antlr.v4.runtime.Parser recognizer, org.antlr.v4.runtime.RecognitionException e)
org.antlr.v4.runtime.Token	recoverInline(org.antlr.v4.runtime.Parser recognizer)
void	sync(org.antlr.v4.runtime.Parser recognizer)

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

beginErrorCondition, constructToken, consumeUntil, endErrorCondition, escapeWSAndQuote, getErrorRecoverySet, getExpectedTokens, getMissingSymbol, getSymbolText, getSymbolType, getTokenErrorDisplay, inErrorRecoveryMode, notifyErrorListeners, 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

Field Detail

firstErrorTokenIndex

public int firstErrorTokenIndex

Constructor Detail

BailButConsumeErrorStrategy

public BailButConsumeErrorStrategy()

Method Detail

recover

public void recover(org.antlr.v4.runtime.Parser recognizer,
                    org.antlr.v4.runtime.RecognitionException e)

Specified by:

recover in interface org.antlr.v4.runtime.ANTLRErrorStrategy

Overrides:

recover in class org.antlr.v4.runtime.DefaultErrorStrategy

recoverInline

public org.antlr.v4.runtime.Token recoverInline(org.antlr.v4.runtime.Parser recognizer)
                                         throws org.antlr.v4.runtime.RecognitionException

Specified by:

recoverInline in interface org.antlr.v4.runtime.ANTLRErrorStrategy

Overrides:

recoverInline in class org.antlr.v4.runtime.DefaultErrorStrategy

Throws:

org.antlr.v4.runtime.RecognitionException

sync

public void sync(org.antlr.v4.runtime.Parser recognizer)

Specified by:

sync in interface org.antlr.v4.runtime.ANTLRErrorStrategy

Overrides:

sync in class org.antlr.v4.runtime.DefaultErrorStrategy