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- /* GNU Objective C Runtime selector related functions
- Copyright (C) 1993 Free Software Foundation, Inc.
-
- Author: Kresten Krab Thorup
-
- This file is part of GNU CC.
-
- GNU CC 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 2, or (at your option) any later version.
-
- GNU CC 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
- GNU CC; see the file COPYING. If not, write to the Free Software
- Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
-
- /* As a special exception, if you link this library with files compiled with
- GCC to produce an executable, this does not cause the resulting executable
- to be covered by the GNU General Public License. This exception does not
- however invalidate any other reasons why the executable file might be
- covered by the GNU General Public License. */
-
- #include "runtime.h"
- #include "objc/sarray.h"
-
- /* Initial selector hash table size. Value doesnt matter much */
- #define SELECTOR_HASH_SIZE 128
-
- /* Tables mapping selector names to uid and opposite */
- static struct sarray* __objc_selector_array = 0; /* uid -> name */
- static cache_ptr __objc_selector_hash = 0; /* name -> uid */
-
- static void register_selectors_from_list(MethodList_t);
-
- /* Number of selectors stored in each of the above tables */
- int __objc_selector_max_index = 0;
-
- void __objc_init_selector_tables()
- {
- __objc_selector_array = sarray_new (SELECTOR_HASH_SIZE, 0);
- __objc_selector_hash
- = hash_new (SELECTOR_HASH_SIZE,
- (hash_func_type) hash_string,
- (compare_func_type) compare_strings);
- }
-
- /* This routine is given a class and records all of the methods in its class
- structure in the record table. */
- void
- __objc_register_selectors_from_class (Class* class)
- {
- MethodList_t method_list;
-
- method_list = class->methods;
- while (method_list)
- {
- register_selectors_from_list (method_list);
- method_list = method_list->method_next;
- }
- }
-
-
- /* This routine is given a list of methods and records each of the methods in
- the record table. This is the routine that does the actual recording
- work.
-
- This one is only called for Class objects. For categories,
- class_add_method_list is called.
- */
- static void
- register_selectors_from_list (MethodList_t method_list)
- {
- int i = 0;
- while (i < method_list->method_count)
- {
- Method_t method = &method_list->method_list[i];
- method->method_name = sel_register_name ((char*)method->method_name);
- i += 1;
- }
- }
-
- /* return selector representing name */
- SEL
- sel_get_uid (const char *name)
- {
- return (SEL) hash_value_for_key (__objc_selector_hash, name);
- }
-
- /* Get name of selector. If selector is unknown, the empty string ""
- is returned */
- const char*
- sel_get_name (SEL selector)
- {
- if ((soffset_decode((sidx)selector) > 0)
- && (soffset_decode((sidx)selector) <= __objc_selector_max_index))
- return sarray_get (__objc_selector_array, (sidx) selector);
- else
- return NULL;
- }
-
- BOOL
- sel_is_mapped (SEL selector)
- {
- unsigned int idx = soffset_decode ((sidx)selector);
- return ((idx > 0) && (idx <= __objc_selector_max_index));
- }
-
- /* The uninstalled dispatch table */
- extern struct sarray* __objc_uninstalled_dtable;
-
- /* Store the passed selector name in the selector record and return its
- selector value (value returned by sel_get_uid). */
- SEL
- sel_register_name (const char *sel)
- {
- SEL j;
- sidx i;
-
- if ((j = sel_get_uid ((const char *) sel)))
- return j;
-
- /* Save the selector name. */
- __objc_selector_max_index += 1;
- i = soffset_encode(__objc_selector_max_index);
-
- DEBUG_PRINTF ("Record selector %s as: %#x\n", sel, i);
-
- sarray_at_put_safe (__objc_selector_array, i, (void *) sel);
- hash_add (&__objc_selector_hash, (void *) sel, (void *) i);
-
- sarray_realloc(__objc_uninstalled_dtable, __objc_selector_max_index+1);
-
- return (SEL) i;
- }
-
-