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Hints
#####
Some additional hints for your edification.
Author: Matthias Urlichs <smurf@debian.org>
How to process C preprocessor codes:
====================================
Rudimentary include handling has been added to the parser by me.
However, if you want to do anything fancy, like for instance whatever
the C preprocessor does, things get more complicated. Fortunately,
there's already a nice tool to handle C preprocessing -- CPP itself.
If you want to report errors correctly in that situation, do this:
def set_line(s,m):
"""Fixup the scanner's idea of the current line"""
s.filename = m.group(2)
line = int(m.group(1))
s.del_line = line - s.line
%%
parser whatever:
ignore: '^#\s*(\d+)\s*"([^"\n]+)"\s*\n' {{ set_line }}
ignore: '^#.*\n'
[...]
%%
if __name__=='__main__':
import sys,os
for a in sys.argv[1:]:
f=os.popen("cpp "+repr(a),"r")
P = whatever(whateverScanner("", filename=a, file=f))
try: P.goal()
except runtime.SyntaxError, e:
runtime.print_error(e, P._scanner)
sys.exit(1)
f.close()
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