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_GOTO,             /* jump to label */
  50    SLANG_OPER_LABEL,            /* a jump target */
  51    SLANG_OPER_EXPRESSION,       /* [expr] */
  52    SLANG_OPER_IF,               /* "if" [0] then [1] else [2] */
  53    SLANG_OPER_WHILE,            /* "while" [cond] [body] */
  54    SLANG_OPER_DO,               /* "do" [body] "while" [cond] */
  55    SLANG_OPER_FOR,              /* "for" [init] [while] [incr] [body] */
  56    SLANG_OPER_VOID,             /* nop */
  57    SLANG_OPER_LITERAL_BOOL,     /* "true" or "false" */
  58    SLANG_OPER_LITERAL_INT,      /* integer literal */
  59    SLANG_OPER_LITERAL_FLOAT,    /* float literal */
  60    SLANG_OPER_IDENTIFIER,       /* var name, func name, etc */
  61    SLANG_OPER_SEQUENCE,         /* [expr] "," [expr] "," etc */
  62    SLANG_OPER_ASSIGN,           /* [var] "=" [expr] */
  63    SLANG_OPER_ADDASSIGN,        /* [var] "+=" [expr] */
  64    SLANG_OPER_SUBASSIGN,        /* [var] "-=" [expr] */
  65    SLANG_OPER_MULASSIGN,        /* [var] "*=" [expr] */
  66    SLANG_OPER_DIVASSIGN,        /* [var] "/=" [expr] */
  67    /*SLANG_OPER_MODASSIGN, */
  68    /*SLANG_OPER_LSHASSIGN, */
  69    /*SLANG_OPER_RSHASSIGN, */
  70    /*SLANG_OPER_ORASSIGN, */
  71    /*SLANG_OPER_XORASSIGN, */
  72    /*SLANG_OPER_ANDASSIGN, */
  73    SLANG_OPER_SELECT,           /* [expr] "?" [expr] ":" [expr] */
  74    SLANG_OPER_LOGICALOR,        /* [expr] "||" [expr] */
  75    SLANG_OPER_LOGICALXOR,       /* [expr] "^^" [expr] */
  76    SLANG_OPER_LOGICALAND,       /* [expr] "&&" [expr] */
  77    /*SLANG_OPER_BITOR, */
  78    /*SLANG_OPER_BITXOR, */
  79    /*SLANG_OPER_BITAND, */
  80    SLANG_OPER_EQUAL,            /* [expr] "==" [expr] */
  81    SLANG_OPER_NOTEQUAL,         /* [expr] "!=" [expr] */
  82    SLANG_OPER_LESS,             /* [expr] "<" [expr] */
  83    SLANG_OPER_GREATER,          /* [expr] ">" [expr] */
  84    SLANG_OPER_LESSequal,        /* [expr] "<=" [expr] */
  85    SLANG_OPER_GREATERequal,     /* [expr] ">=" [expr] */
  86    /*SLANG_OPER_LSHIFT, */
  87    /*SLANG_OPER_RSHIFT, */
  88    SLANG_OPER_ADD,              /* [expr] "+" [expr] */
  89    SLANG_OPER_SUBTRACT,         /* [expr] "-" [expr] */
  90    SLANG_OPER_MULTIPLY,         /* [expr] "*" [expr] */
  91    SLANG_OPER_DIVIDE,           /* [expr] "/" [expr] */
  92    /*SLANG_OPER_MODULUS, */
  93    SLANG_OPER_PREINCREMENT,     /* "++" [var] */
  94    SLANG_OPER_PREDECREMENT,     /* "--" [var] */
  95    SLANG_OPER_PLUS,             /* "-" [expr] */
  96    SLANG_OPER_MINUS,            /* "+" [expr] */
  97    /*SLANG_OPER_COMPLEMENT, */
  98    SLANG_OPER_NOT,              /* "!" [expr] */
  99    SLANG_OPER_SUBSCRIPT,        /* [expr] "[" [expr] "]" */
 100    SLANG_OPER_CALL,             /* [func name] [param] [param] [...] */
 101    SLANG_OPER_FIELD,            /* i.e.: ".next" or ".xzy" or ".xxx" etc */
 102    SLANG_OPER_POSTINCREMENT,    /* [var] "++" */
 103    SLANG_OPER_POSTDECREMENT     /* [var] "--" */
 104 } slang_operation_type;
 105
 106
 107 /**
 108  * A slang_operation is basically a compiled instruction (such as assignment,
 109  * a while-loop, a conditional, a multiply, a function call, etc).
 110  * The AST (abstract syntax tree) is built from these nodes.
 111  * NOTE: This structure could have been implemented as a union of simpler
 112  * structs which would correspond to the operation types above.
 113  */
 114 typedef struct slang_operation_
 115 {
 116    slang_operation_type type;
 117    struct slang_operation_ *children;
 118    GLuint num_children;
 119    GLfloat literal[4];           /**< Used for float, int and bool values */
 120    GLuint literal_size;          /**< 1, 2, 3, or 4 */
 121    slang_atom a_id;              /**< type: asm, identifier, call, field */
 122    slang_variable_scope *locals; /**< local vars for scope */
 123    struct slang_function_ *fun;  /**< If type == SLANG_OPER_CALL */
 124    struct slang_variable_ *var;  /**< If type == slang_oper_identier */
 125 } slang_operation;
 126
 127
 128 extern GLboolean
 129 slang_operation_construct(slang_operation *);
 130
 131 extern void
 132 slang_operation_destruct(slang_operation *);
 133
 134 extern GLboolean
 135 slang_operation_copy(slang_operation *, const slang_operation *);
 136
 137 extern slang_operation *
 138 slang_operation_new(GLuint count);
 139
 140 extern void
 141 slang_operation_delete(slang_operation *oper);
 142
 143 extern slang_operation *
 144 slang_operation_grow(GLuint *numChildren, slang_operation **children);
 145
 146 extern slang_operation *
 147 slang_operation_insert(GLuint *numChildren, slang_operation **children,
 148                        GLuint pos);
 149
 150
 151 #ifdef __cplusplus
 152 }
 153 #endif
 154
 155 #endif /* SLANG_COMPILE_OPERATION_H */