Re: [GD-General] Text file parsing

[Achim M. <amu...@is...>]

Didn't try it myself, but http://www.irule.be/bvh/c++/olex/ pretends to
be: "olex is an easy to use LL(1) parser generator in C++, generating
C++ code."

-achim

> Marc Fascia wrote:
> 
> Hello,
> 
> I'm currently writing a toolkit that will be used as a basis for my
> next game engine. It will feature one or several editing tools for
> content creation, as one of the objective is to be data-driven. In the
> process, I plan to use some intermediate text-based file formats, such
> as ASE for meshes (easy to export from any modelling packages), text
> shaders/material files and so on.
> 
> My question is about the best way of writing file-parsers for these
> files. I can see currently 2 options
> 
> 1) use some tools like Lex&Yacc
> - Pros : easy to use, fast development time, easy to make the grammar
> evolve
> - Cons : for now, I was unable to make Lex&Yacc create some nice C++
> parser class that can be embedded in my tools.
> 
> 2) write my own from scratch, maybe first writing a DumbParser class
> that just provides with a bunch of basic string function, acting like
> a Lexer and derive the different needed parsers from that, embedding
> the grammar inside
> 
> - Pros : full control on the design and the implementation, in
> comparison to the obfuscated code from Ley/Yacc
> - Cons : more development time, grammar kind of hardcoded so not
> easily maintainable, I'm not very experienced in writing text parsers
> :)
> 
> I wonder how people handle file parsing in their projects.
> Thanks for your help.
> 
> -Marc
>