#NAME

B::Hooks::OP::Check - Wrap OP check callbacks

#VERSION

version 0.22

#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 user_data that the callback had.

#SUPPORT

Bugs may be submitted through the RT bug tracker (or bug-B-Hooks-OP-Check@rt.cpan.org).

#AUTHOR

Florian Ragwitz <rafl@debian.org>

#CONTRIBUTORS

Karen Etheridge <ether@cpan.org>
Zefram <zefram@fysh.org>
Alexandr Ciornii <alexchorny@gmail.com>

#COPYRIGHT AND LICENCE

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.

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