src/st-association.h

   1 /*
   2  * st-association.h
   3  *
   4  * Copyright (c) 2008 Vincent Geddes
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a copy
   7  * of this software and associated documentation files (the "Software"), to deal
   8  * in the Software without restriction, including without limitation the rights
   9  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  10  * copies of the Software, and to permit persons to whom the Software is
  11  * furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included in
  14  * all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  19  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  22  * THE SOFTWARE.
  23 */
  24
  25 #ifndef __ST_ASSOCIATION_H__
  26 #define __ST_ASSOCIATION_H__
  27
  28 #include <st-object.h>
  29 #include <st-types.h>
  30
  31 struct st_association
  32 {
  33     struct st_header header;
  34
  35     st_oop key;
  36     st_oop value;
  37 };
  38
  39 st_oop   st_association_new   (st_oop key, st_oop value);
  40 st_uint  st_association_hash  (st_oop object);
  41 bool     st_association_equal (st_oop object, st_oop other);
  42
  43 #define ST_ASSOCIATION(oop)         ((struct st_association *) st_detag_pointer (oop))
  44 #define ST_ASSOCIATION_KEY(oop)   (ST_ASSOCIATION(oop)->key)
  45 #define ST_ASSOCIATION_VALUE(oop) (ST_ASSOCIATION(oop)->value)
  46
  47 #endif /* __ST_ASSOCIATION_H__ */