| /* Callback management. |
| Copyright (C) 2014-2019 Free Software Foundation, Inc. |
| |
| This file is part of GCC. |
| |
| GCC is free software; you can redistribute it and/or modify it under |
| the terms of the GNU General Public License as published by the Free |
| Software Foundation; either version 3, or (at your option) any later |
| version. |
| |
| GCC is distributed in the hope that it will be useful, but WITHOUT ANY |
| WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GCC; see the file COPYING3. If not see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #include <cc1plugin-config.h> |
| #include <string.h> |
| #include <stdlib.h> |
| #include "callbacks.hh" |
| #include "libiberty.h" |
| |
| // An entry in the hash table. |
| struct method |
| { |
| const char *name; |
| cc1_plugin::callback_ftype *func; |
| }; |
| |
| // Hash function for struct method. |
| static hashval_t |
| hash_method (const void *a) |
| { |
| const struct method *m = (const struct method *) a; |
| |
| return htab_hash_string (m->name); |
| } |
| |
| // Equality function for struct method. |
| static int |
| eq_method (const void *a, const void *b) |
| { |
| const struct method *ma = (const struct method *) a; |
| const struct method *mb = (const struct method *) b; |
| |
| return strcmp (ma->name, mb->name) == 0; |
| } |
| |
| cc1_plugin::callbacks::callbacks () |
| : m_registry (htab_create_alloc (10, hash_method, eq_method, |
| free, xcalloc, free)) |
| { |
| } |
| |
| cc1_plugin::callbacks::~callbacks () |
| { |
| htab_delete (m_registry); |
| } |
| |
| void |
| cc1_plugin::callbacks::add_callback (const char *name, |
| cc1_plugin::callback_ftype *func) |
| { |
| method m; |
| method **slot; |
| |
| m.name = name; |
| m.func = func; |
| |
| slot = (method **) htab_find_slot (m_registry, &m, INSERT); |
| *slot = XNEW (method); |
| **slot = m; |
| } |
| |
| cc1_plugin::callback_ftype * |
| cc1_plugin::callbacks::find_callback (const char *name) |
| { |
| method m, *found; |
| |
| m.name = name; |
| |
| found = (method *) htab_find (m_registry, &m); |
| if (found == NULL) |
| return NULL; |
| |
| return found->func; |
| } |