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B::Hooks::OP::Check(3pm) | User Contributed Perl Documentation | B::Hooks::OP::Check(3pm) |
NAME¶
B::Hooks::OP::Check - Wrap OP check callbacksSYNOPSIS¶
# 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 RagwitzThis module is free software.
You may distribute this code under the same terms as Perl itself.
2016-07-05 | perl v5.24.1 |