NAME
ExtUtils::ParseXS - converts Perl XS code into C code
SYNOPSIS
use ExtUtils::ParseXS qw(process_file);
process_file( filename => 'foo.xs' );
process_file( filename => 'foo.xs',
output => 'bar.c',
'C++' => 1,
typemap => 'path/to/typemap',
hiertype => 1,
except => 1,
prototypes => 1,
versioncheck => 1,
linenumbers => 1,
optimize => 1,
prototypes => 1,
);
=head1 DESCRIPTION
"ExtUtils::ParseXS" will compile XS code into C code by embedding the
constructs necessary to let C functions manipulate Perl values and
creates the glue necessary to let Perl access those functions. The
compiler uses typemaps to determine how to map C function parameters and
variables to Perl values.
The compiler will search for typemap files called *typemap*. It will use
the following search path to find default typemaps, with the rightmost
typemap taking precedence.
../../../typemap:../../typemap:../typemap:typemap
EXPORT
None by default. "process_file()" may be exported upon request.
FUNCTIONS
process_xs()
This function processes an XS file and sends output to a C file.
Named parameters control how the processing is done. The following
parameters are accepted:
C++ Adds "extern "C"" to the C code. Default is false.
hiertype
Retains "::" in type names so that C++ hierachical types can be
mapped. Default is false.
except
Adds exception handling stubs to the C code. Default is false.
typemap
Indicates that a user-supplied typemap should take precedence
over the default typemaps. A single typemap may be specified as
a string, or multiple typemaps can be specified in an array
reference, with the last typemap having the highest precedence.
prototypes
Generates prototype code for all xsubs. Default is false.
versioncheck
Makes sure at run time that the object file (derived from the
".xs" file) and the ".pm" files have the same version number.
Default is true.
linenumbers
Adds "#line" directives to the C output so error messages will
look like they came from the original XS file. Default is true.
optimize
Enables certain optimizations. The only optimization that is
currently affected is the use of *target*s by the output C code
(see perlguts). Not optimizing may significantly slow down the
generated code, but this is the way xsubpp of 5.005 and earlier
operated. Default is to optimize.
inout
Enable recognition of "IN", "OUT_LIST" and "INOUT_LIST"
declarations. Default is true.
argtypes
Enable recognition of ANSI-like descriptions of function
signature. Default is true.
s I have no clue what this does. Strips function prefixes?
errors()
This function returns the number of [a certain kind of] errors
encountered during processing of the XS file.
AUTHOR
Based on xsubpp code, written by Larry Wall.
Maintained by:
* Ken Williams, <ken@mathforum.org>
* David Golden, <dagolden@cpan.org>
COPYRIGHT
Copyright 2002-2009 by Ken Williams, David Golden and other
contributors. All rights reserved.
This library is free software; you can redistribute it and/or modify it
under the same terms as Perl itself.
Based on the ExtUtils::xsubpp code by Larry Wall and the Perl 5 Porters,
which was released under the same license terms.
SEE ALSO
perl, ExtUtils::xsubpp, ExtUtils::MakeMaker, perlxs, perlxstut.