|Modifier and Type||Field and Description|
Provides a default instance of
|Constructor and Description|
|Modifier and Type||Method and Description|
Upon syntax error, notify any interested parties.
reportAmbiguity, reportAttemptingFullContext, reportContextSensitivity
public void syntaxError(Recognizer<?,?> recognizer, Object offendingSymbol, int line, int charPositionInLine, String msg, RecognitionException e)
ANTLRErrorStrategyspecifies how to recover from syntax errors and how to compute error messages. This listener's job is simply to emit a computed message, though it has enough information to create its own message in many cases.
RecognitionException is non-null for all syntax errors except
when we discover mismatched token errors that we can recover from
in-line, without returning from the surrounding rule (via the single
token insertion and deletion mechanism).
This implementation prints messages to
System.err containing the
the following format.
line line:charPositionInLine msg
recognizer- What parser got the error. From this object, you can access the context as well as the input stream.
offendingSymbol- The offending token in the input token stream, unless recognizer is a lexer (then it's null). If no viable alternative error,
ehas token at which we started production for the decision.
line- The line number in the input where the error occurred.
charPositionInLine- The character position within that line where the error occurred.
msg- The message to emit.
e- The exception generated by the parser that led to the reporting of an error. It is null in the case where the parser was able to recover in line without exiting the surrounding rule.
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