src/st-behavior.h

   1 /*
   2  * st-behavior.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_BEHAVIOR_H__
  26 #define __ST_BEHAVIOR_H__
  27
  28 #include <st-types.h>
  29 #include <st-object.h>
  30 #include <st-memory.h>
  31 #include <st-small-integer.h>
  32
  33 #define ST_BEHAVIOR(oop)  ((struct st_behavior *)  ST_POINTER (oop))
  34 #define ST_CLASS(oop)     ((struct st_class *)     ST_POINTER (oop))
  35 #define ST_METACLASS(oop) ((struct st_metaclass *) ST_POINTER (oop))
  36
  37 struct st_behavior
  38 {
  39     struct st_header header;
  40
  41     st_oop format;
  42     st_oop superclass;
  43     st_oop instance_size;
  44     st_oop method_dictionary;
  45     st_oop instance_variables;
  46 };
  47
  48 struct st_class
  49 {
  50     struct st_behavior parent;
  51
  52     st_oop name;
  53 };
  54
  55 struct st_metaclass
  56 {
  57     struct st_behavior parent;
  58
  59     st_oop instance_class;
  60 };
  61
  62 #define ST_BEHAVIOR_FORMAT(oop)             (ST_BEHAVIOR (oop)->format)
  63 #define ST_BEHAVIOR_SUPERCLASS(oop)         (ST_BEHAVIOR (oop)->superclass)
  64 #define ST_BEHAVIOR_INSTANCE_SIZE(oop)      (ST_BEHAVIOR (oop)->instance_size)
  65 #define ST_BEHAVIOR_METHOD_DICTIONARY(oop)  (ST_BEHAVIOR (oop)->method_dictionary)
  66 #define ST_BEHAVIOR_INSTANCE_VARIABLES(oop) (ST_BEHAVIOR (oop)->instance_variables)
  67 #define ST_CLASS_NAME(oop)                  (ST_CLASS (oop)->name)
  68 #define ST_METACLASS_INSTANCE_CLASS(oop)    (ST_METACLASS (oop)->instance_class)
  69
  70
  71 static inline st_oop
  72 st_object_new (st_oop class)
  73 {
  74     return st_descriptors[st_smi_value (ST_BEHAVIOR (class)->format)]->allocate (class);
  75 }
  76
  77 static inline st_oop
  78 st_object_new_arrayed (st_oop class, st_smi size)
  79 {
  80     return st_descriptors[st_smi_value (ST_BEHAVIOR (class)->format)]->allocate_arrayed (class, size);
  81 }
  82
  83 st_list *st_behavior_all_instance_variables (st_oop class);
  84
  85
  86
  87 #endif /* __ST_BEHAVIOR_H__ */