[antlr-interest] End of file
jg z
zjg1964 at yahoo.com
Tue Apr 23 05:59:28 PDT 2002
Thank you, Ric,
According to your comment, we got our problem
solved. We did forget to add something at that point
during the conversion.
Zuo & David
>
> I had a short look at the files David sent me
> earlier the problem is most
> probable in the external_declaration rule where
> there's an alternative:
>
> {K_and_R = TRUE;}
> {printf("CPP_parser.g Ln490\n");}
> function_definition
> |
> // templated forward class decl, init/decl of
> static member in template
> {beginTemplateDefinition();}
> (template_head declaration_specifiers
> ( init_declarator_list ) ? SEMICOLON {
> end_of_stmt();}
> ) => {endTemplateDefinition();}
>
> /*** what is missing here???? ***/
>
> |
> // Templated FUNCTIONS and CONSTRUCTORS
> matched here.
> {beginTemplateDefinition();}
> template_head
> (
>
> Note the predicate pointing to nothing. Removing
> that eliminates the EOF
> from the lookahead set of external_declaration.
>
> Advice: antlr -diagnostic <yourinputfile> is your
> friend. (The textfile it
> generates lists all lookahead sets in readable
> format, that way you can
> track down which alternative is the culprit if
> something gets a wrong piece
> of lookahead)
>
> Advice2: I'm getting the impression that you are
> trying to convert the old
> PCCTS grammar as a whole? If so then it's probably
> not the most practical
> approach. Try to convert it piece by piece (or
> better said alternative by
> alternative). That way it's easier to pinpoint rules
> that give trouble.
>
> Good luck,
>
> Ric
> --
>
-----+++++*****************************************************+++++++++-------
> ---- Ric Klaren ----- klaren at cs.utwente.nl -----
> +31 53 4893722 ----
>
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>
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>
>
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