BISON: multiple parsers within a single program.

The Problem:
4 files.
File one is a list of objects and criteria.
File two is a list of file names which may match this criteria.


We read these two files to develop a master list of yet ANOTHER two
file types. We then read the new files from this list, which have the
following characteristics:


1. Contains a header and a body of data.
2. Data of different types -- some by keyword, some by position, some
by position relative to keyword. .
3. Some entries in type 1 may refer to multiple entries in type 2.


My solution:


Use Flex/Bison to generate four parsers, one for each file. I will
then build a driver which will direct the use of the parsers among the
files and store the collected data in central data structures.


=============


Does this sound like a feasible approach? Or is FLEX/BISON going to
do something strange? Are there some gotchas lurking in the weeds
that I'm not aware of? I've never tried multiple parsers within a
single program before, and although the documentation for Bison says
it's possible -- I wonder. I'd really like a second opinion before I
go off and spend a week trying to implement something before finding
out I've wasted my time.


Opinions?


Many thanks for any assistance you can offer.


Respectfully,


Brian P.

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