src/mesa/shader/slang/slang_compile_operation.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_OPERATION_H
  26 #define SLANG_COMPILE_OPERATION_H
  27
  28 #if defined __cplusplus
  29 extern "C" {
  30 #endif
  31
  32
  33 /**
  34  * Types of slang operations.
  35  * These are the types of the AST (abstract syntax tree) nodes.
  36  * [foo] indicates a sub-tree or reference to another type of node
  37  */
  38 typedef enum slang_operation_type_
  39 {
  40    slang_oper_none,
  41    slang_oper_block_no_new_scope,       /* "{" sequence "}" */
  42    slang_oper_block_new_scope,  /* "{" sequence "}" */
  43    slang_oper_variable_decl,    /* [type] [var] or [var] = [expr] */
  44    slang_oper_asm,
  45    slang_oper_break,            /* "break" statement */
  46    slang_oper_continue,         /* "continue" statement */
  47    slang_oper_discard,          /* "discard" (kill fragment) statement */
  48    slang_oper_return,           /* "return" [expr]  */
  49    slang_oper_expression,       /* [expr] */
  50    slang_oper_if,               /* "if" [0] then [1] else [2] */
  51    slang_oper_while,            /* "while" [cond] [body] */
  52    slang_oper_do,               /* "do" [body] "while" [cond] */
  53    slang_oper_for,              /* "for" [init] [while] [incr] [body] */
  54    slang_oper_void,             /* nop */
  55    slang_oper_literal_bool,     /* "true" or "false" */
  56    slang_oper_literal_int,      /* integer literal */
  57    slang_oper_literal_float,    /* float literal */
  58    slang_oper_identifier,       /* var name, func name, etc */
  59    slang_oper_sequence,         /* [expr] "," [expr] "," etc */
  60    slang_oper_assign,           /* [var] "=" [expr] */
  61    slang_oper_addassign,        /* [var] "+=" [expr] */
  62    slang_oper_subassign,        /* [var] "-=" [expr] */
  63    slang_oper_mulassign,        /* [var] "*=" [expr] */
  64    slang_oper_divassign,        /* [var] "/=" [expr] */
  65    /*slang_oper_modassign, */
  66    /*slang_oper_lshassign, */
  67    /*slang_oper_rshassign, */
  68    /*slang_oper_orassign, */
  69    /*slang_oper_xorassign, */
  70    /*slang_oper_andassign, */
  71    slang_oper_select,           /* [expr] "?" [expr] ":" [expr] */
  72    slang_oper_logicalor,        /* [expr] "||" [expr] */
  73    slang_oper_logicalxor,       /* [expr] "^^" [expr] */
  74    slang_oper_logicaland,       /* [expr] "&&" [expr] */
  75    /*slang_oper_bitor, */
  76    /*slang_oper_bitxor, */
  77    /*slang_oper_bitand, */
  78    slang_oper_equal,            /* [expr] "==" [expr] */
  79    slang_oper_notequal,         /* [expr] "!=" [expr] */
  80    slang_oper_less,             /* [expr] "<" [expr] */
  81    slang_oper_greater,          /* [expr] ">" [expr] */
  82    slang_oper_lessequal,        /* [expr] "<=" [expr] */
  83    slang_oper_greaterequal,     /* [expr] ">=" [expr] */
  84    /*slang_oper_lshift, */
  85    /*slang_oper_rshift, */
  86    slang_oper_add,              /* [expr] "+" [expr] */
  87    slang_oper_subtract,         /* [expr] "-" [expr] */
  88    slang_oper_multiply,         /* [expr] "*" [expr] */
  89    slang_oper_divide,           /* [expr] "/" [expr] */
  90    /*slang_oper_modulus, */
  91    slang_oper_preincrement,     /* "++" [var] */
  92    slang_oper_predecrement,     /* "--" [var] */
  93    slang_oper_plus,             /* "-" [expr] */
  94    slang_oper_minus,            /* "+" [expr] */
  95    /*slang_oper_complement, */
  96    slang_oper_not,              /* "!" [expr] */
  97    slang_oper_subscript,        /* [expr] "[" [expr] "]" */
  98    slang_oper_call,             /* [func name] [param] [param] [...] */
  99    slang_oper_field,            /* i.e.: ".next" or ".xzy" or ".xxx" etc */
 100    slang_oper_postincrement,    /* [var] "++" */
 101    slang_oper_postdecrement     /* [var] "--" */
 102 } slang_operation_type;
 103
 104
 105 /**
 106  * A slang_operation is basically a compiled instruction (such as assignment,
 107  * a while-loop, a conditional, a multiply, a function call, etc).
 108  * The AST (abstract syntax tree) is built from these nodes.
 109  * NOTE: This structure could have been implemented as a union of simpler
 110  * structs which would correspond to the operation types above.
 111  */
 112 typedef struct slang_operation_
 113 {
 114    slang_operation_type type;
 115    struct slang_operation_ *children;
 116    GLuint num_children;
 117    GLfloat literal;            /**< Used for float, int and bool values */
 118    slang_atom a_id;            /**< type: asm, identifier, call, field */
 119    slang_variable_scope *locals;       /**< local vars for scope */
 120 } slang_operation;
 121
 122
 123 extern GLboolean
 124 slang_operation_construct(slang_operation *);
 125
 126 extern void
 127 slang_operation_destruct(slang_operation *);
 128
 129 extern GLboolean
 130 slang_operation_copy(slang_operation *, const slang_operation *);
 131
 132 extern slang_operation *
 133 slang_operation_new(GLuint count);
 134
 135
 136 #ifdef __cplusplus
 137 }
 138 #endif
 139
 140 #endif /* SLANG_COMPILE_OPERATION_H */