[Boost-build] v2 generator that inspects source files for antlr rule

From: John Reid (j.reid_at_[hidden])
Date: 2007-02-16 04:47:11

Hi,

I'd like to extend boost build to handle antlr grammars. Antlr converts 
.g files to CPP, HPP and TXT files. Unfortunately unlike most tools the 
filenames of these generated files don't depend on the filename of the 
<source>.g file but rather on the contents of the .g file. Setting up a 
regex that matches these is not too hard though.

I have 2 problems. The documentation on custom generators is pretty 
unforgiving. I'm finding it hard just to write one that tell boost build 
the names of the generated files (even if I set these up in free 
properties instead of regex-ing them).

Also I think I need something more sophisticated than a scanner to regex 
these files. If I have it right a scanner just executes INCLUDE rules on 
the matched patterns? I need to extract the matches in the generator I 
guess.

Any pointers to what I should be doing would be most appreciated.

John.