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add initial regexp support based on the coptional rxspencer library. Active it using --with-rxspencer after installing the rxspencer library

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git-svn-id: https://swig.svn.sourceforge.net/svnroot/swig/trunk/SWIG@8470 626c5289-ae23-0410-ae9c-e8d60b6d4f22
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Marcelo Matus 2006-01-17 00:32:21 +00:00
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Version 1.3.28 (unreleased).
===========================
01/16/2006: mmatus
Add initial support for regexp via the external library
RxSpencer. SWIG doesn't require this library to compile
and/or run. But if you specify --with-rxspencer, and the
library is found during installation, then swig will use
it in three places:
- In %renames rules, via the new rxsmatch rules, for example:
%rename("%(lowercase)",rxsmatch$name="GSL_.*") "";
%rename("%(lowercase)",rxsmatch$nodeType="enum GSL_.*") "";
rxsmatch is similar to the match rule, it just uses
the RxSpencer regexp library to decide if there is a
match with the provided regexp. As with the match
rule, you can also use the negate rule notrxsmatch.
- In the %rename target name via the rxstarget option, for example:
%rename("%(lowercase)",rxstarget=1) "GSL_.*";
where the target name "GSL.*" is now understood as a
regexp to be matched.
- In the new encoder "rxspencer", which looks like:
%(rxspencer:[regexp][replace])s
where "regexp" is the regular expression and "replace"
is a string used as a replacement, where the @0,@1,...,@9
pseudo arguments are used to represent the
corresponding matching items in the reg expression.
For example:
%(rxspencer:[GSL.*][@0])s <- Hello ->
%(rxspencer:[GSL.*][@0])s <- GSLHello -> GSLHello
%(rxspencer:[GSL(.*)][@1])s <- GSLHello -> Hello
%(rxspencer:[GSL(.*)][gsl@1])s <- GSLHello -> gslHello
Another example could be:
%rename("%(lowercase)s",sourcefmt="%(rxspencer:[GSL_(.*)][@1])s",%$isfunction) "";
which take out the prefix "GSL_" and returns all the
function names in lower cases, as following:
void GSL_Hello(); -> hello();
void GSL_Hi(); -> hi();
const int GSL_MAX; -> GSL_MAX; // no change, is not a function
We use the RxSpencer as an initial test bed to
implemention while we decide which library will be
finally added to swig.
You can obtain the RxSpencer library from
http://arglist.com/regex (Unix)
or
http://gnuwin32.sourceforge.net/packages.html (Windows)
Once installed, use "man rxspencer" to get more info
about the regexp format, or just google rxspencer.
Since now you can enable the rxsmatch rules (see above),
the simple or '|' support for the match rules
(01/12/2006: mmatus) is disabled. Still, if you have
problems with the rxspencer library, you can re-enable
the simple 'match or' support using -DSWIG_USE_SIMPLE_MATCHOR.
01/16/2006: mmatus
Change the %rename predicates to use the prefix '%$', as in:
%rename("%(utitle)s",%$isfunction,%$ismember) "";
to avoid clashings with other swig macros/directives.
01/14/2006: cfisavage
Added support for Ruby bang! methods via a new %bang feature.
Bang methods end in exclamation points and indicate that the