B::Hooks::OP::Check

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.

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.