src/st-word-array.h

   1 /*
   2  * st-array.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_WORD_ARRAY_H__
  26 #define __ST_WORD_ARRAY_H__
  27
  28 #include <st-types.h>
  29 #include <st-object.h>
  30
  31 #define ST_WORD_ARRAY(oop) ((struct st_word_array *) ST_POINTER (oop))
  32
  33 struct st_word_array
  34 {
  35     struct st_arrayed_object header;
  36
  37     st_uint elements[];
  38 };
  39
  40 st_descriptor *st_word_array_descriptor (void);
  41
  42 static inline st_uint *
  43 st_word_array_elements (st_oop object)
  44 {
  45     return ST_WORD_ARRAY (object)->elements;
  46 }
  47
  48 static inline st_uint
  49 st_word_array_at (st_oop object, st_smi i)
  50 {
  51     st_assert (1 <= i && i <= st_arrayed_object_size (object));
  52
  53     return ST_WORD_ARRAY (object)->elements[i - 1];
  54 }
  55
  56 static inline void
  57 st_word_array_at_put (st_oop object, st_smi i, st_uint value)
  58 {
  59     st_assert (1 <= i && i <= st_arrayed_object_size (object));
  60
  61     ST_WORD_ARRAY (object)->elements[i - 1] = value;
  62 }
  63
  64 #endif /* __ST_WORD_ARRAY_H__ */