Package org.apache.groovy.parser.antlr4.internal

Class RecoveringDescriptiveErrorStrategy

java.lang.Object
org.antlr.v4.runtime.DefaultErrorStrategy
org.apache.groovy.parser.antlr4.internal.RecoveringDescriptiveErrorStrategy
All Implemented Interfaces:
org.antlr.v4.runtime.ANTLRErrorStrategy
public final class RecoveringDescriptiveErrorStrategy extends org.antlr.v4.runtime.DefaultErrorStrategy
Recovering parser error strategy with the same friendly diagnostics as DescriptiveErrorStrategy.

Uses ANTLR's default resync / single-token repair so multiple recognition errors can be reported in one pass (IDE editing). Prefer construction via DescriptiveErrorStrategy.create(CharStream, boolean).

Callers must parse with LL prediction and error listeners installed. Hosts should read diagnostics from ErrorCollector: a partial tree may still fail during AST building after recovery.

See Also:

  • Field Summary

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

    errorRecoveryMode, lastErrorIndex, lastErrorStates, nextTokensContext, nextTokensState

  • Constructor Summary

    Constructors
    Constructor
    Description
    RecoveringDescriptiveErrorStrategy(org.antlr.v4.runtime.CharStream charStream)
     

  • Method Summary

    Modifier and Type
    Method
    Description
    protected String
    createFailedPredicateErrorMessage(org.antlr.v4.runtime.Parser recognizer, org.antlr.v4.runtime.FailedPredicateException e)
    Format a failed-predicate diagnostic.
    protected String
    createInputMismatchErrorMessage(org.antlr.v4.runtime.Parser recognizer, org.antlr.v4.runtime.InputMismatchException e)
     
    protected String
    createNoViableAlternativeErrorMessage(org.antlr.v4.runtime.Parser recognizer, org.antlr.v4.runtime.NoViableAltException e)
     
    protected void
    reportFailedPredicate(org.antlr.v4.runtime.Parser recognizer, org.antlr.v4.runtime.FailedPredicateException e)
     
    protected void
    reportInputMismatch(org.antlr.v4.runtime.Parser recognizer, org.antlr.v4.runtime.InputMismatchException e)
     
    protected void
    reportNoViableAlternative(org.antlr.v4.runtime.Parser recognizer, org.antlr.v4.runtime.NoViableAltException e)
     

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

    beginErrorCondition, constructToken, consumeUntil, endErrorCondition, escapeWSAndQuote, getErrorRecoverySet, getExpectedTokens, getMissingSymbol, getSymbolText, getSymbolType, getTokenErrorDisplay, inErrorRecoveryMode, notifyErrorListeners, recover, recoverInline, reportError, reportMatch, reportMissingToken, reportUnwantedToken, reset, singleTokenDeletion, singleTokenInsertion, sync

    Methods inherited from class java.lang.Object

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

  • Constructor Details

    • RecoveringDescriptiveErrorStrategy

      public RecoveringDescriptiveErrorStrategy(org.antlr.v4.runtime.CharStream charStream)
      Parameters:
      charStream - source character stream used for snippet extraction

  • Method Details

    • createNoViableAlternativeErrorMessage

      protected String createNoViableAlternativeErrorMessage(org.antlr.v4.runtime.Parser recognizer, org.antlr.v4.runtime.NoViableAltException e)

    • reportNoViableAlternative

      protected void reportNoViableAlternative(org.antlr.v4.runtime.Parser recognizer, org.antlr.v4.runtime.NoViableAltException e)
      Overrides:
      reportNoViableAlternative in class org.antlr.v4.runtime.DefaultErrorStrategy

    • createInputMismatchErrorMessage

      protected String createInputMismatchErrorMessage(org.antlr.v4.runtime.Parser recognizer, org.antlr.v4.runtime.InputMismatchException e)

    • reportInputMismatch

      protected void reportInputMismatch(org.antlr.v4.runtime.Parser recognizer, org.antlr.v4.runtime.InputMismatchException e)
      Overrides:
      reportInputMismatch in class org.antlr.v4.runtime.DefaultErrorStrategy

    • createFailedPredicateErrorMessage

      protected String createFailedPredicateErrorMessage(org.antlr.v4.runtime.Parser recognizer, org.antlr.v4.runtime.FailedPredicateException e)
      Format a failed-predicate diagnostic.

      recognizer is part of the protected hook surface (parity with createNoViableAlternativeErrorMessage(org.antlr.v4.runtime.Parser, org.antlr.v4.runtime.NoViableAltException) / createInputMismatchErrorMessage(org.antlr.v4.runtime.Parser, org.antlr.v4.runtime.InputMismatchException)) so subclasses can include parser state when customising the message.

    • reportFailedPredicate

      protected void reportFailedPredicate(org.antlr.v4.runtime.Parser recognizer, org.antlr.v4.runtime.FailedPredicateException e)
      Overrides:
      reportFailedPredicate in class org.antlr.v4.runtime.DefaultErrorStrategy