[antlr-interest] Errors that ANTRL shouldn't issue

[Thiago F.G. Albuquerque]

Errors that ANTRL shouldn't issue:

1)

tokens
{
//    "true";
//    "false";
}

grammar.g:18:1: rule classDef trapped:
grammar.g:18:1: unexpected token: }
error: aborting grammar 'MyLexer' due to errors
Exiting due to errors.

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2)

INT : DIGIT+ ;

ANTLR Parser Generator   Version 2.7.2   1989-2003 jGuru.com
grammar.g:28:7: rule classDef trapped:
grammar.g:28:7: unexpected token: DIGIT
error: aborting grammar 'MyLexer' due to errors
Exiting due to errors.

Why isn't this legal? Why do I have to enclose DIGIT in parentheses?

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Thiago


 

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