On Mon, Mar 15, 2010 at 9:41 PM, Kirby Bohling <[email protected]> wrote:
> You need to repeat some of that for the lexer. Using the
> @lexer::members syntax if you're going to do it as a combined
> lexer/parser grammar (I always separate mine to keep my mental working
> set smaller). If you don't do the lexer, you can have a lex error and
> recover from it, but this should catch all of the parse errors.
>
> Kirby
>
>
> On Mon, Mar 15, 2010 at 3:32 PM, Andrew Haritonkin <[email protected]> wrote:
>> For Java and C# target add this in the beginning of the grammar but
>> after grammar statement:
>>
>> grammar grammar1;
>>
>> @members {
>> protected override object RecoverFromMismatchedToken(IIntStream input,
>> int ttype, BitSet follow)
>> {
>> throw new MismatchedTokenException(ttype, input);
>> }
>> public override object RecoverFromMismatchedSet(IIntStream input,
>> RecognitionException e, BitSet follow)
>> {
>> throw e;
>> }
>> }
>>
>> @rulecatch {
>> catch (RecognitionException e)
>> {
>> throw e;
>> }
>> }
>>
>> Hope it helps,
>> Andrew
>>
Indeed, forgot about lexer... So, the full code which you need to add
to the grammar for C# target would be:
grammar grammar1;
@lexer::members {
public override void ReportError(RecognitionException e)
{
throw e;
}
}
@parser::members {
protected override object RecoverFromMismatchedToken(IIntStream input,
int ttype, BitSet follow)
{
throw new MismatchedTokenException(ttype, input);
}
public override object RecoverFromMismatchedSet(IIntStream input,
RecognitionException e, BitSet follow)
{
throw e;
}
}
@rulecatch {
catch (RecognitionException e)
{
throw e;
}
}
Similar should be for Java target, only naming convention is different.
Andrew
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