Re: [Grammatica-users] Parser bug ?

[Leszek Doniec]

Hi,

Productions NumberList and WordList have the same begining. In the version of grammatica I use it was a problem, I don't know if it is already solved. Try to add one common production for those two, something like this:

 

Result = List;

 

List = "{" [IDENT ":"] ( WordList | NumberList); // Or just Result = ...

 

NumberList = NUMBER ("," NUMBER)+ "}";

WordList = Sentence "}";

I can't check it right now, but I hope it works
Regards,

Leszek Doniec

 

 

2006/9/5, Vilmundur Palmason <address@hidden>:

I have been using the development version  of grammatica (1.5 alpha 2) and it looks to me like there is a bug in the parser generation.

The attached grammar should do as a test case,  by passing to it :

{start a b c}

i get:

net.percederberg.grammatica.parser.ParserLogException: unexpected token "b" <IDENT>, expected "}", on line 1 column: 10
    at net.percederberg.grammatica.parser.Parser.reset (Parser.java:271)
    at net.percederberg.grammatica.parser.Parser.parse(Parser.java:303)
     ...
A workaround for this simple case is to eliminate the Sentence production by inlining it.

Unfortunately I have a grammar file that is much bigger where it is difficult to use such a workaround
without increasing the complexity.

Regards,
 

Vilmundur Palmason

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