src/mesa/shader/slang/slang_compile_function.h

   1 /*
   2  * Mesa 3-D graphics library
   3  * Version:  6.5.2
   4  *
   5  * Copyright (C) 2005-2006  Brian Paul   All Rights Reserved.
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a
   8  * copy of this software and associated documentation files (the "Software"),
   9  * to deal in the Software without restriction, including without limitation
  10  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  11  * and/or sell copies of the Software, and to permit persons to whom the
  12  * Software is furnished to do so, subject to the following conditions:
  13  *
  14  * The above copyright notice and this permission notice shall be included
  15  * in all copies or substantial portions of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  18  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  20  * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
  21  * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  22  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  23  */
  24
  25 #ifndef SLANG_COMPILE_FUNCTION_H
  26 #define SLANG_COMPILE_FUNCTION_H
  27
  28
  29 struct slang_code_unit_;
  30
  31 /**
  32  * Types of functions.
  33  */
  34 typedef enum slang_function_kind_
  35 {
  36    SLANG_FUNC_ORDINARY,
  37    SLANG_FUNC_CONSTRUCTOR,
  38    SLANG_FUNC_OPERATOR
  39 } slang_function_kind;
  40
  41
  42 /**
  43  * When we need to fill in addresses which we won't know until the future,
  44  * we keep track of them with a fix-up table.
  45  */
  46 typedef struct slang_fixup_table_
  47 {
  48    GLuint *table;     /**< array[count] of addresses */
  49    GLuint count;
  50 } slang_fixup_table;
  51
  52 extern void slang_fixup_table_init(slang_fixup_table *);
  53 extern void slang_fixup_table_free(slang_fixup_table *);
  54 extern GLboolean slang_fixup_save(slang_fixup_table *fixups, GLuint address);
  55
  56
  57 /**
  58  * Description of a compiled shader function.
  59  */
  60 typedef struct slang_function_
  61 {
  62    slang_function_kind kind;
  63    slang_variable header;      /**< The function's name and return type */
  64    slang_variable_scope *parameters; /**< formal parameters AND local vars */
  65    unsigned int param_count;   /**< number of formal params (no locals) */
  66    slang_operation *body;      /**< The instruction tree */
  67    unsigned int address;       /**< Address of this func in memory */
  68    slang_fixup_table fixups;   /**< Mem locations which need func's address */
  69 } slang_function;
  70
  71 extern int slang_function_construct(slang_function *);
  72 extern void slang_function_destruct(slang_function *);
  73
  74
  75 /**
  76  * Basically, a list of compiled functions.
  77  */
  78 typedef struct slang_function_scope_
  79 {
  80    slang_function *functions;
  81    GLuint num_functions;
  82    struct slang_function_scope_ *outer_scope;
  83 } slang_function_scope;
  84
  85
  86 extern GLvoid
  87 _slang_function_scope_ctr(slang_function_scope *);
  88
  89 extern void
  90 slang_function_scope_destruct(slang_function_scope *);
  91
  92 extern GLboolean
  93 _slang_function_has_return_value(const slang_function *fun);
  94
  95 extern int
  96 slang_function_scope_find_by_name(slang_function_scope *, slang_atom, int);
  97
  98 extern slang_function *
  99 slang_function_scope_find(slang_function_scope *, slang_function *, int);
 100
 101 #endif /* SLANG_COMPILE_FUNCTION_H */