src/st-context.h

   1 /*
   2  * st-context.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_CONTEXT_H__
  26 #define __ST_CONTEXT_H__
  27
  28 #include <st-types.h>
  29 #include <st-object.h>
  30
  31 struct st_context_part
  32 {
  33     struct st_header __parent__;
  34
  35     st_oop sender;
  36     st_oop ip;
  37     st_oop sp;
  38
  39 };
  40
  41 struct st_method_context
  42 {
  43     struct st_context_part __parent__;
  44     st_oop method;
  45     st_oop receiver;
  46
  47     st_oop stack[];
  48 };
  49
  50 struct st_block_context
  51 {
  52     struct st_context_part __parent__;
  53     st_oop initial_ip;
  54     st_oop argcount;
  55     st_oop home;
  56
  57     st_oop stack[];
  58 };
  59
  60 #define ST_CONTEXT_PART(oop)       ((struct st_context_part *)   st_detag_pointer (oop))
  61 #define ST_METHOD_CONTEXT(oop)     ((struct st_method_context *) st_detag_pointer (oop))
  62 #define ST_BLOCK_CONTEXT(oop)      ((struct st_block_context *)  st_detag_pointer (oop))
  63
  64
  65 #define ST_CONTEXT_PART_SENDER(oop)  (ST_CONTEXT_PART (oop)->sender)
  66 #define ST_CONTEXT_PART_IP(oop)      (ST_CONTEXT_PART (oop)->ip)
  67 #define ST_CONTEXT_PART_SP(oop)      (ST_CONTEXT_PART (oop)->sp)
  68
  69 #define ST_METHOD_CONTEXT_METHOD(oop)   (ST_METHOD_CONTEXT (oop)->method)
  70 #define ST_METHOD_CONTEXT_RECEIVER(oop) (ST_METHOD_CONTEXT (oop)->receiver)
  71 #define ST_METHOD_CONTEXT_STACK(oop)    (ST_METHOD_CONTEXT (oop)->stack)
  72
  73 #define ST_BLOCK_CONTEXT_INITIALIP(oop) (ST_BLOCK_CONTEXT (oop)->initial_ip)
  74 #define ST_BLOCK_CONTEXT_ARGCOUNT(oop)  (ST_BLOCK_CONTEXT (oop)->argcount)
  75 #define ST_BLOCK_CONTEXT_HOME(oop)      (ST_BLOCK_CONTEXT (oop)->home)
  76 #define ST_BLOCK_CONTEXT_STACK(oop)     (ST_BLOCK_CONTEXT (oop)->stack)
  77
  78 #endif /* __ST_CONTEXT_H__ */