Re: [Boost-Users] Re: [Spirit-general] Problem with Parsing

From: Dave Gomboc (dave_at_[hidden])
Date: 2003-08-01 12:23:08

*(anychar_p) will grab characters until the cows comes home (e.g. you run
out of input).  You need to remove RIGHT_BRACE from the set of characters
that it will accept.  I don't recall the exact syntax but it will be in the
docs somewhere, basically it looks like a subtraction.

Dave

----- Original Message ----- 
From: "sps22" <sps22_at_[hidden]>
To: <Boost-Users_at_[hidden]>
Sent: Friday, August 01, 2003 11:03 AM
Subject: [Boost-Users] Re: [Spirit-general] Problem with Parsing

> Joel:
>
> On your suggestion, I used the debugging and found that if I replace
>
> FILE >> LEFT_BRACE >> *(anychar_p) >> RIGHT_BRACE
>
> by a real rule like
>
> FILE >> LEFT_BRACE >> A_REAL_RULE >> RIGHT_BRACE
>
> then it works OK. What was strange was that the debugger indicated
> that the entire input file was consumed by the first original code
> and all that was left was "" and it still said parser failed. Any
> insight into it?
>
> Thanks.
> -Surinder
> PS: Could not post the response to the Spirit mailing list.
>
>
> --- In Boost-Users_at_[hidden], "Joel de Guzman" <djowel_at_g...>
> wrote:
> > Hi,
> >
> > Have you tried using the Spirit debugger?
> >
> > Cheers,
> > -- 
> > Joel de Guzman
> > joel at boost-consulting.com
> > http://www.boost-consulting.com
> > http://spirit.sf.net
> >
> > Surinder Pal Singh <sps22_at_y...> wrote:
> > > Hi,
> > > I am trying to use Spirit (in the latest Boost 1_30_0)
> > > for a project. I want to parse a file whose structure
> > > is the following:
> > >
> > > section1 {
> > >   something;
> > > }
> > >
> > > I am using the file_iterator to iterate on the input
> > > file and then define comment as well as the grammar. I
> > > am at my wits end why my parser keeps failing. (When
> > > this simple grammar works, I want to make the parser
> > > more complex.) My code is attached below. (Note: I
> > > used the example in the distribution c_grammar.cpp as
> > > the starting point for it.)
> > >
> > > Thanks.
> > >
> > > -surinder
> > >  I have attempted to join the spirit mail list, but
> > > have not received the confirmation so far, but please
> > > feel free to respond to me at: sps22_at_yahoo_dot_com
> > >
> > >
> > > PS: This input file structure is going to be, of
> > > course, more complicated than the example shown above.
> > > Inside the setions, I would like to pass on flags and
> > > statements to the code. If it is better for me to use
> > > another approach to parse this file structure, please
> > > suggest me.
> > >
> > [snip]
>
>
>
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