Version 1.1 is out

[Yves Berquin]

The project status has been upgraded to beta, as we have now a usable engine.

Try it, and get back to us if you encounter any problem with it.

[Simon Harrison]

This is pretty fiendish stuff!
An early observation:

if (! ltp_get (0) || ltp_get (0) -> lex_get_value () != lex_ncname)
               throw syntax_error ("[XML 6/1]");

in xpath_syntax.cpp throws all the way through the test set, caught at the bottom of the function:

   catch (syntax_error s2)
   {
      if (! o_final)
         throw syntax_backtrack (s2);
      throw;
   }

.. which usually throws syntax_backtrace since o_final is null.

On first site it looks like a parser error is being hidden.

Otherwise it seems to work for me.

hope this helps,

-Simon.

[Yves Berquin]

Thanks for the observation.
Actually, that's the way it works.
All over the place in the syntax decoder, you need to try one possible branch or another.
The syntax_backtrack exception gives the way out of a branch. o_final is false when we do this. When we know exactly what we will have, we put o_final to true and go further.
Take care
Yves

[Yves Berquin]

I have changed the logic in 1.2.1 to avoid throwing exceptions in the regular case.
There's only exceptions in case of syntax error or malfunction now.

Yves