dlls/d3dx9_36/asmshader.l

   1 /*
   2  * Direct3D shader assembler
   3  *
   4  * Copyright 2008 Stefan Dösinger
   5  * Copyright 2009 Matteo Bruni
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with this library; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  20  */
  21
  22 %{
  23 #include "config.h"
  24 #include "wine/port.h"
  25 #include "wine/debug.h"
  26
  27 #include "d3dx9_36_private.h"
  28 #include "asmshader.tab.h"
  29
  30 WINE_DEFAULT_DEBUG_CHANNEL(asmshader);
  31 %}
  32
  33 %option noyywrap
  34 %option prefix="asmshader_"
  35 %option noinput nounput
  36
  37 /* Registers */
  38 REG_TEMP                r[0-9]+
  39 /* for relative addressing in the form o[x], v[x] and c[x] */
  40 REG_CONSTFLOAT          c[0-9]*
  41
  42 PREPROCESSORDIRECTIVE   #[^\n]*\n
  43
  44 /* Comments */
  45 DOUBLESLASHCOMMENT      "//"[^\n]*
  46 SEMICOLONCOMMENT        ";"[^\n]*
  47
  48 /* Whitespaces are spaces, tabs and newlines */
  49 WHITESPACE              [ \t]+
  50 NEWLINE                 (\n)|(\r\n)
  51
  52 COMMA                   ","
  53
  54 IMMVAL                  \-?(([0-9]+)|([0-9]*\.[0-9]+))(f)?
  55
  56 ANY                     (.)
  57
  58 %%
  59
  60     /* Common instructions(vertex and pixel shaders) */
  61 mov                     {return INSTR_MOV;          }
  62
  63 {REG_TEMP}              {
  64                             asmshader_lval.regnum = atoi(yytext + 1);
  65                             return REG_TEMP;
  66                         }
  67 {REG_CONSTFLOAT}        {
  68                             asmshader_lval.regnum = atoi(yytext + 1);
  69                             return REG_CONSTFLOAT;
  70                         }
  71
  72     /* Shader versions. These are important to select the correct
  73      * parser profile.
  74      */
  75 vs\.1\.0|vs_1_0         {return VER_VS10;       }
  76 vs\.1\.1|vs_1_1         {return VER_VS11;       }
  77
  78 vs_2_0                  {return VER_VS20;       }
  79 vs_2_x                  {return VER_VS2X;       }
  80 vs_3_0                  {return VER_VS30;       }
  81
  82 ps\.1\.0|ps_1_0         {return VER_PS10;       }
  83 ps\.1\.1|ps_1_1         {return VER_PS11;       }
  84 ps\.1\.2|ps_1_2         {return VER_PS12;       }
  85 ps\.1\.3|ps_1_3         {return VER_PS13;       }
  86 ps\.1\.4|ps_1_4         {return VER_PS14;       }
  87
  88 ps_2_0                  {return VER_PS20;       }
  89 ps_2_x                  {return VER_PS2X;       }
  90 ps_3_0                  {return VER_PS30;       }
  91
  92 {COMMA}                 {return yytext[0];          }
  93 -                       {return yytext[0];          }
  94 \(                      {return yytext[0];          }
  95 \)                      {return yytext[0];          }
  96
  97 {PREPROCESSORDIRECTIVE} {
  98                             /* TODO: update current line information */
  99                             TRACE("line info update: %s", yytext);
 100                         }
 101
 102     /* Skip comments */
 103 {DOUBLESLASHCOMMENT}    {                           }
 104 {SEMICOLONCOMMENT}      {                           }
 105
 106 {WHITESPACE}            { /* Do nothing */          }
 107 {NEWLINE}               {
 108                             asm_ctx.line_no++;
 109                         }
 110
 111 {ANY}                   {
 112                             asmparser_message(&asm_ctx, "Line %u: Unexpected input %s\n", asm_ctx.line_no, yytext);
 113                             set_parse_status(&asm_ctx, PARSE_ERR);
 114                         }
 115
 116 %%
 117
 118 struct bwriter_shader *SlAssembleShader(const char *text, char **messages) {
 119     struct bwriter_shader *ret = NULL;
 120     YY_BUFFER_STATE buffer;
 121     TRACE("%p, %p\n", text, messages);
 122
 123     buffer = asmshader__scan_string(text);
 124     asmshader__switch_to_buffer(buffer);
 125
 126     ret = parse_asm_shader(messages);
 127
 128     asmshader__delete_buffer(buffer);
 129
 130     return ret;
 131 }