src/mesa/shader/slang/slang_compile_variable.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_VARIABLE_H
  26 #define SLANG_COMPILE_VARIABLE_H
  27
  28
  29 struct slang_ir_storage_;
  30
  31
  32 /**
  33  * A shading language program variable.
  34  */
  35 typedef struct slang_variable_
  36 {
  37    slang_fully_specified_type type; /**< Variable's data type */
  38    slang_atom a_name;               /**< The variable's name (char *) */
  39    GLuint array_len;                /**< only if type == SLANG_SPEC_ARRAy */
  40    struct slang_operation_ *initializer; /**< Optional initializer code */
  41    GLuint size;                     /**< Variable's size in bytes */
  42    GLboolean is_global;
  43    GLboolean isTemp;                /**< a named temporary (__resultTmp) */
  44    GLboolean declared;              /**< for debug */
  45    struct slang_ir_storage_ *store; /**< Storage for this var */
  46 } slang_variable;
  47
  48
  49 /**
  50  * Basically a list of variables, with a pointer to the parent scope.
  51  */
  52 typedef struct slang_variable_scope_
  53 {
  54    slang_variable **variables;  /**< Array [num_variables] of ptrs to vars */
  55    GLuint num_variables;
  56    struct slang_variable_scope_ *outer_scope;
  57 } slang_variable_scope;
  58
  59
  60 extern slang_variable_scope *
  61 _slang_variable_scope_new(slang_variable_scope *parent);
  62
  63 extern GLvoid
  64 _slang_variable_scope_ctr(slang_variable_scope *);
  65
  66 extern void
  67 slang_variable_scope_destruct(slang_variable_scope *);
  68
  69 extern int
  70 slang_variable_scope_copy(slang_variable_scope *,
  71                           const slang_variable_scope *);
  72
  73 extern slang_variable *
  74 slang_variable_scope_grow(slang_variable_scope *);
  75
  76 extern int
  77 slang_variable_construct(slang_variable *);
  78
  79 extern void
  80 slang_variable_destruct(slang_variable *);
  81
  82 extern int
  83 slang_variable_copy(slang_variable *, const slang_variable *);
  84
  85 extern slang_variable *
  86 _slang_variable_locate(const slang_variable_scope *, const slang_atom a_name,
  87                        GLboolean all);
  88
  89
  90 #endif /* SLANG_COMPILE_VARIABLE_H */