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NAME
B::Hooks::OP::Check - Wrap OP check callbacks
SYNOPSIS
# include "hook_op_check.h"
STATIC OP *my_const_check_op (pTHX_ OP *op, void *user_data) {
/* ... */
return op;
}
STATIC hook_op_check_id my_hook_id = 0;
void
setup ()
CODE:
my_hook_id = hook_op_check (OP_CONST, my_const_check_op, NULL);
void
teardown ()
CODE:
hook_op_check_remove (OP_CONST, my_hook_id);
DESCRIPTION
This module provides a c api for XS modules to hook into the callbacks
of "PL_check".
ExtUtils::Depends is used to export all functions for other XS modules
to use. Include the following in your Makefile.PL:
my $pkg = ExtUtils::Depends->new('Your::XSModule', 'B::Hooks::OP::Check');
WriteMakefile(
... # your normal makefile flags
$pkg->get_makefile_vars,
);
Your XS module can now include "hook_op_check.h".
TYPES
typedef OP *(*hook_op_check_cb) (pTHX_ OP *, void *);
Type that callbacks need to implement.
typedef UV hook_op_check_id
Type to identify a callback.
FUNCTIONS
hook_op_check_id hook_op_check (opcode type, hook_op_check_cb cb, void *user_data)
Register the callback "cb" to be called after the "PL_check" function
for opcodes of the given "type". "user_data" will be passed to the
callback as the last argument. Returns an id that can be used to remove
the callback later on.
void *hook_op_check_remove (opcode type, hook_op_check_id id)
Remove the callback identified by "id". Returns the userdata the
callback had.
AUTHOR
Florian Ragwitz <rafl@debian.org>
COPYRIGHT AND LICENSE
Copyright (c) 2008 Florian Ragwitz
This module is free software.
You may distribute this code under the same terms as Perl itself.
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