[antlr-interest] Invalid parser generation

[Stefan Mätje]

Am 04.09.2012 13:20, schrieb mark4 at voila.fr:
> Hi everyone,
>
> I've built a grammar file, checked it with AntlrWorks, and ran the code generation for the C# language. Though, some invalid code has been generated.
>
> This rule:
> compte : ('0'..'9')+
> ;

This is a parser rule (lower case rule name) but you're using lexer 
syntax on the right side of the ":". This won't work.

I think that is the origin of your problems.

Use

COMPTE: ('0'..'9)+

making a lexer rule of it.


> translates to:
>
> [GrammarRule("compte")]
> private void compte()
> ...
> try { DebugEnterSubRule(5);
> while (true)
> {
> int alt5=2;
> try { DebugEnterDecision(5, decisionCanBacktrack[5]);
> int LA5_0 = input.LA(1);
>
> if (()) <= This triggers an error!!!
> {
> alt5 = 1;
> }
> ...
>
> I have a similar void if, a bit farther in the compte() method. What's wrong with this simple rule?
>
> Thanks in advance,
> Mark
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I hope that helps and is what you really want to do.

Best regards,
	Stefan Mätje