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B::Hooks::OP::Check

Wrap OP check callbacks

    # 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);

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".

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.

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.

Remove the callback identified by "id". Returns the userdata the callback had.

Florian Ragwitz <rafl@debian.org>

Copyright (c) 2008 Florian Ragwitz

This module is free software.

You may distribute this code under the same terms as Perl itself.