src/mesa/shader/program_lexer.l

   1 %{
   2 /*
   3  * Copyright © 2009 Intel Corporation
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the "Software"),
   7  * to deal in the Software without restriction, including without limitation
   8  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   9  * and/or sell copies of the Software, and to permit persons to whom the
  10  * Software is furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice (including the next
  13  * paragraph) shall be included in all copies or substantial portions of the
  14  * Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  21  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  22  * DEALINGS IN THE SOFTWARE.
  23  */
  24 #include "main/glheader.h"
  25 #include "main/imports.h"
  26 #include "shader/prog_instruction.h"
  27 #include "shader/prog_statevars.h"
  28
  29 #include "shader/symbol_table.h"
  30 #include "shader/program_parser.h"
  31 #include "shader/program_parse.tab.h"
  32
  33 #define require_ARB_vp (yyextra->mode == ARB_vertex)
  34 #define require_ARB_fp (yyextra->mode == ARB_fragment)
  35 #define require_NV_fp  (yyextra->option.NV_fragment)
  36 #define require_shadow (yyextra->option.Shadow)
  37 #define require_rect   (yyextra->option.TexRect)
  38 #define require_texarray        (yyextra->option.TexArray)
  39
  40 #ifndef HAVE_UNISTD_H
  41 #define YY_NO_UNISTD_H
  42 #endif
  43
  44 #define return_token_or_IDENTIFIER(condition, token)    \
  45    do {                                                 \
  46       if (condition) {                                  \
  47          return token;                                  \
  48       } else {                                          \
  49          return handle_ident(yyextra, yytext, yylval);  \
  50       }                                                 \
  51    } while (0)
  52
  53 #define return_token_or_DOT(condition, token)           \
  54    do {                                                 \
  55       if (condition) {                                  \
  56          return token;                                  \
  57       } else {                                          \
  58          yyless(1);                                     \
  59          return DOT;                                    \
  60       }                                                 \
  61    } while (0)
  62
  63
  64 #define return_opcode(condition, token, opcode, len)    \
  65    do {                                                 \
  66       if (condition &&                                  \
  67           _mesa_parse_instruction_suffix(yyextra,       \
  68                                          yytext + len,  \
  69                                          & yylval->temp_inst)) {        \
  70          yylval->temp_inst.Opcode = OPCODE_ ## opcode;  \
  71          return token;                                  \
  72       } else {                                          \
  73          return handle_ident(yyextra, yytext, yylval);  \
  74       }                                                 \
  75    } while (0)
  76
  77 #define SWIZZLE_INVAL  MAKE_SWIZZLE4(SWIZZLE_NIL, SWIZZLE_NIL, \
  78                                      SWIZZLE_NIL, SWIZZLE_NIL)
  79
  80 static unsigned
  81 mask_from_char(char c)
  82 {
  83    switch (c) {
  84    case 'x':
  85    case 'r':
  86       return WRITEMASK_X;
  87    case 'y':
  88    case 'g':
  89       return WRITEMASK_Y;
  90    case 'z':
  91    case 'b':
  92       return WRITEMASK_Z;
  93    case 'w':
  94    case 'a':
  95       return WRITEMASK_W;
  96    }
  97
  98    return 0;
  99 }
 100
 101 static unsigned
 102 swiz_from_char(char c)
 103 {
 104    switch (c) {
 105    case 'x':
 106    case 'r':
 107       return SWIZZLE_X;
 108    case 'y':
 109    case 'g':
 110       return SWIZZLE_Y;
 111    case 'z':
 112    case 'b':
 113       return SWIZZLE_Z;
 114    case 'w':
 115    case 'a':
 116       return SWIZZLE_W;
 117    }
 118
 119    return 0;
 120 }
 121
 122 static int
 123 handle_ident(struct asm_parser_state *state, const char *text, YYSTYPE *lval)
 124 {
 125    lval->string = strdup(text);
 126
 127    return (_mesa_symbol_table_find_symbol(state->st, 0, text) == NULL)
 128       ? IDENTIFIER : USED_IDENTIFIER;
 129 }
 130
 131 #define YY_USER_ACTION                                                  \
 132    do {                                                                 \
 133       yylloc->first_column = yylloc->last_column;                       \
 134       yylloc->last_column += yyleng;                                    \
 135       if ((yylloc->first_line == 1)                                     \
 136           && (yylloc->first_column == 1)) {                             \
 137          yylloc->position = 1;                                          \
 138       } else {                                                          \
 139          yylloc->position += yylloc->last_column - yylloc->first_column; \
 140       }                                                                 \
 141    } while(0);
 142
 143 #define YY_EXTRA_TYPE struct asm_parser_state *
 144 %}
 145
 146 num    [0-9]+
 147 exp    [Ee][-+]?[0-9]+
 148 frac   "."[0-9]+
 149 dot    "."[ \t]*
 150
 151 sz     [HRX]?
 152 szf    [HR]?
 153 cc     C?
 154 sat    (_SAT)?
 155
 156 %option bison-bridge bison-locations reentrant noyywrap
 157 %%
 158
 159 "!!ARBvp1.0"              { return ARBvp_10; }
 160 "!!ARBfp1.0"              { return ARBfp_10; }
 161 ADDRESS                   {
 162    yylval->integer = at_address;
 163    return_token_or_IDENTIFIER(require_ARB_vp, ADDRESS);
 164 }
 165 ALIAS                     { return ALIAS; }
 166 ATTRIB                    { return ATTRIB; }
 167 END                       { return END; }
 168 OPTION                    { return OPTION; }
 169 OUTPUT                    { return OUTPUT; }
 170 PARAM                     { return PARAM; }
 171 TEMP                      { yylval->integer = at_temp; return TEMP; }
 172
 173 ABS{sz}{cc}{sat}   { return_opcode(             1, VECTOR_OP, ABS, 3); }
 174 ADD{sz}{cc}{sat}   { return_opcode(             1, BIN_OP, ADD, 3); }
 175 ARL                { return_opcode(require_ARB_vp, ARL, ARL, 3); }
 176
 177 CMP{sat}           { return_opcode(require_ARB_fp, TRI_OP, CMP, 3); }
 178 COS{szf}{cc}{sat}  { return_opcode(require_ARB_fp, SCALAR_OP, COS, 3); }
 179
 180 DDX{szf}{cc}{sat}  { return_opcode(require_NV_fp,  VECTOR_OP, DDX, 3); }
 181 DDY{szf}{cc}{sat}  { return_opcode(require_NV_fp,  VECTOR_OP, DDY, 3); }
 182 DP3{sz}{cc}{sat}   { return_opcode(             1, BIN_OP, DP3, 3); }
 183 DP4{sz}{cc}{sat}   { return_opcode(             1, BIN_OP, DP4, 3); }
 184 DPH{sz}{cc}{sat}   { return_opcode(             1, BIN_OP, DPH, 3); }
 185 DST{szf}{cc}{sat}  { return_opcode(             1, BIN_OP, DST, 3); }
 186
 187 EX2{szf}{cc}{sat}  { return_opcode(             1, SCALAR_OP, EX2, 3); }
 188 EXP                { return_opcode(require_ARB_vp, SCALAR_OP, EXP, 3); }
 189
 190 FLR{sz}{cc}{sat}   { return_opcode(             1, VECTOR_OP, FLR, 3); }
 191 FRC{sz}{cc}{sat}   { return_opcode(             1, VECTOR_OP, FRC, 3); }
 192
 193 KIL                { return_opcode(require_ARB_fp, KIL, KIL, 3); }
 194
 195 LIT{szf}{cc}{sat}  { return_opcode(             1, VECTOR_OP, LIT, 3); }
 196 LG2{szf}{cc}{sat}  { return_opcode(             1, SCALAR_OP, LG2, 3); }
 197 LOG                { return_opcode(require_ARB_vp, SCALAR_OP, LOG, 3); }
 198 LRP{sz}{cc}{sat}   { return_opcode(require_ARB_fp, TRI_OP, LRP, 3); }
 199
 200 MAD{sz}{cc}{sat}   { return_opcode(             1, TRI_OP, MAD, 3); }
 201 MAX{sz}{cc}{sat}   { return_opcode(             1, BIN_OP, MAX, 3); }
 202 MIN{sz}{cc}{sat}   { return_opcode(             1, BIN_OP, MIN, 3); }
 203 MOV{sz}{cc}{sat}   { return_opcode(             1, VECTOR_OP, MOV, 3); }
 204 MUL{sz}{cc}{sat}   { return_opcode(             1, BIN_OP, MUL, 3); }
 205
 206 PK2H               { return_opcode(require_NV_fp,  VECTOR_OP, PK2H, 4); }
 207 PK2US              { return_opcode(require_NV_fp,  VECTOR_OP, PK2US, 5); }
 208 PK4B               { return_opcode(require_NV_fp,  VECTOR_OP, PK4B, 4); }
 209 PK4UB              { return_opcode(require_NV_fp,  VECTOR_OP, PK4UB, 5); }
 210 POW{szf}{cc}{sat}  { return_opcode(             1, BINSC_OP, POW, 3); }
 211
 212 RCP{szf}{cc}{sat}  { return_opcode(             1, SCALAR_OP, RCP, 3); }
 213 RFL{szf}{cc}{sat}  { return_opcode(require_NV_fp,  BIN_OP,    RFL, 3); }
 214 RSQ{szf}{cc}{sat}  { return_opcode(             1, SCALAR_OP, RSQ, 3); }
 215
 216 SCS{sat}           { return_opcode(require_ARB_fp, SCALAR_OP, SCS, 3); }
 217 SEQ{sz}{cc}{sat}   { return_opcode(require_NV_fp,  BIN_OP, SEQ, 3); }
 218 SFL{sz}{cc}{sat}   { return_opcode(require_NV_fp,  BIN_OP, SFL, 3); }
 219 SGE{sz}{cc}{sat}   { return_opcode(             1, BIN_OP, SGE, 3); }
 220 SGT{sz}{cc}{sat}   { return_opcode(require_NV_fp,  BIN_OP, SGT, 3); }
 221 SIN{szf}{cc}{sat}  { return_opcode(require_ARB_fp, SCALAR_OP, SIN, 3); }
 222 SLE{sz}{cc}{sat}   { return_opcode(require_NV_fp,  BIN_OP, SLE, 3); }
 223 SLT{sz}{cc}{sat}   { return_opcode(             1, BIN_OP, SLT, 3); }
 224 SNE{sz}{cc}{sat}   { return_opcode(require_NV_fp,  BIN_OP, SNE, 3); }
 225 STR{sz}{cc}{sat}   { return_opcode(require_NV_fp,  BIN_OP, STR, 3); }
 226 SUB{sz}{cc}{sat}   { return_opcode(             1, BIN_OP, SUB, 3); }
 227 SWZ{sat}           { return_opcode(             1, SWZ, SWZ, 3); }
 228
 229 TEX{cc}{sat}       { return_opcode(require_ARB_fp, SAMPLE_OP, TEX, 3); }
 230 TXB{cc}{sat}       { return_opcode(require_ARB_fp, SAMPLE_OP, TXB, 3); }
 231 TXD{cc}{sat}       { return_opcode(require_NV_fp,  TXD_OP, TXD, 3); }
 232 TXP{cc}{sat}       { return_opcode(require_ARB_fp, SAMPLE_OP, TXP, 3); }
 233
 234 UP2H{cc}{sat}      { return_opcode(require_NV_fp,  SCALAR_OP, UP2H, 4); }
 235 UP2US{cc}{sat}     { return_opcode(require_NV_fp,  SCALAR_OP, UP2US, 5); }
 236 UP4B{cc}{sat}      { return_opcode(require_NV_fp,  SCALAR_OP, UP4B, 4); }
 237 UP4UB{cc}{sat}     { return_opcode(require_NV_fp,  SCALAR_OP, UP4UB, 5); }
 238
 239 X2D{szf}{cc}{sat}  { return_opcode(require_NV_fp,  TRI_OP, X2D, 3); }
 240 XPD{sat}           { return_opcode(             1, BIN_OP, XPD, 3); }
 241
 242 vertex                    { return_token_or_IDENTIFIER(require_ARB_vp, VERTEX); }
 243 fragment                  { return_token_or_IDENTIFIER(require_ARB_fp, FRAGMENT); }
 244 program                   { return PROGRAM; }
 245 state                     { return STATE; }
 246 result                    { return RESULT; }
 247
 248 {dot}ambient              { return AMBIENT; }
 249 {dot}attenuation          { return ATTENUATION; }
 250 {dot}back                 { return BACK; }
 251 {dot}clip                 { return_token_or_DOT(require_ARB_vp, CLIP); }
 252 {dot}color                { return COLOR; }
 253 {dot}depth                { return_token_or_DOT(require_ARB_fp, DEPTH); }
 254 {dot}diffuse              { return DIFFUSE; }
 255 {dot}direction            { return DIRECTION; }
 256 {dot}emission             { return EMISSION; }
 257 {dot}env                  { return ENV; }
 258 {dot}eye                  { return EYE; }
 259 {dot}fogcoord             { return FOGCOORD; }
 260 {dot}fog                  { return FOG; }
 261 {dot}front                { return FRONT; }
 262 {dot}half                 { return HALF; }
 263 {dot}inverse              { return INVERSE; }
 264 {dot}invtrans             { return INVTRANS; }
 265 {dot}light                { return LIGHT; }
 266 {dot}lightmodel           { return LIGHTMODEL; }
 267 {dot}lightprod            { return LIGHTPROD; }
 268 {dot}local                { return LOCAL; }
 269 {dot}material             { return MATERIAL; }
 270 {dot}program              { return MAT_PROGRAM; }
 271 {dot}matrix               { return MATRIX; }
 272 {dot}matrixindex          { return_token_or_DOT(require_ARB_vp, MATRIXINDEX); }
 273 {dot}modelview            { return MODELVIEW; }
 274 {dot}mvp                  { return MVP; }
 275 {dot}normal               { return_token_or_DOT(require_ARB_vp, NORMAL); }
 276 {dot}object               { return OBJECT; }
 277 {dot}palette              { return PALETTE; }
 278 {dot}params               { return PARAMS; }
 279 {dot}plane                { return PLANE; }
 280 {dot}point                { return_token_or_DOT(require_ARB_vp, POINT_TOK); }
 281 {dot}pointsize            { return_token_or_DOT(require_ARB_vp, POINTSIZE); }
 282 {dot}position             { return POSITION; }
 283 {dot}primary              { return PRIMARY; }
 284 {dot}projection           { return PROJECTION; }
 285 {dot}range                { return_token_or_DOT(require_ARB_fp, RANGE); }
 286 {dot}row                  { return ROW; }
 287 {dot}scenecolor           { return SCENECOLOR; }
 288 {dot}secondary            { return SECONDARY; }
 289 {dot}shininess            { return SHININESS; }
 290 {dot}size                 { return_token_or_DOT(require_ARB_vp, SIZE_TOK); }
 291 {dot}specular             { return SPECULAR; }
 292 {dot}spot                 { return SPOT; }
 293 {dot}texcoord             { return TEXCOORD; }
 294 {dot}texenv               { return_token_or_DOT(require_ARB_fp, TEXENV); }
 295 {dot}texgen               { return_token_or_DOT(require_ARB_vp, TEXGEN); }
 296 {dot}q                    { return_token_or_DOT(require_ARB_vp, TEXGEN_Q); }
 297 {dot}s                    { return_token_or_DOT(require_ARB_vp, TEXGEN_S); }
 298 {dot}t                    { return_token_or_DOT(require_ARB_vp, TEXGEN_T); }
 299 {dot}texture              { return TEXTURE; }
 300 {dot}transpose            { return TRANSPOSE; }
 301 {dot}attrib               { return_token_or_DOT(require_ARB_vp, VTXATTRIB); }
 302 {dot}weight               { return_token_or_DOT(require_ARB_vp, WEIGHT); }
 303
 304 texture                   { return_token_or_IDENTIFIER(require_ARB_fp, TEXTURE_UNIT); }
 305 1D                        { return_token_or_IDENTIFIER(require_ARB_fp, TEX_1D); }
 306 2D                        { return_token_or_IDENTIFIER(require_ARB_fp, TEX_2D); }
 307 3D                        { return_token_or_IDENTIFIER(require_ARB_fp, TEX_3D); }
 308 CUBE                      { return_token_or_IDENTIFIER(require_ARB_fp, TEX_CUBE); }
 309 RECT                      { return_token_or_IDENTIFIER(require_ARB_fp && require_rect, TEX_RECT); }
 310 SHADOW1D                  { return_token_or_IDENTIFIER(require_ARB_fp && require_shadow, TEX_SHADOW1D); }
 311 SHADOW2D                  { return_token_or_IDENTIFIER(require_ARB_fp && require_shadow, TEX_SHADOW2D); }
 312 SHADOWRECT                { return_token_or_IDENTIFIER(require_ARB_fp && require_shadow && require_rect, TEX_SHADOWRECT); }
 313 ARRAY1D                   { return_token_or_IDENTIFIER(require_ARB_fp && require_texarray, TEX_ARRAY1D); }
 314 ARRAY2D                   { return_token_or_IDENTIFIER(require_ARB_fp && require_texarray, TEX_ARRAY2D); }
 315 ARRAYSHADOW1D             { return_token_or_IDENTIFIER(require_ARB_fp && require_shadow && require_texarray, TEX_ARRAYSHADOW1D); }
 316 ARRAYSHADOW2D             { return_token_or_IDENTIFIER(require_ARB_fp && require_shadow && require_texarray, TEX_ARRAYSHADOW2D); }
 317
 318 [_a-zA-Z$][_a-zA-Z0-9$]*  { return handle_ident(yyextra, yytext, yylval); }
 319
 320 ".."                      { return DOT_DOT; }
 321
 322 {num}                     {
 323    yylval->integer = strtol(yytext, NULL, 10);
 324    return INTEGER;
 325 }
 326 {num}?{frac}{exp}?        {
 327    yylval->real = (float) _mesa_strtod(yytext, NULL);
 328    return REAL;
 329 }
 330 {num}"."/[^.]             {
 331    yylval->real = (float) _mesa_strtod(yytext, NULL);
 332    return REAL;
 333 }
 334 {num}{exp}                {
 335    yylval->real = (float) _mesa_strtod(yytext, NULL);
 336    return REAL;
 337 }
 338 {num}"."{exp}             {
 339    yylval->real = (float) _mesa_strtod(yytext, NULL);
 340    return REAL;
 341 }
 342
 343 ".xyzw"                   {
 344    yylval->swiz_mask.swizzle = SWIZZLE_NOOP;
 345    yylval->swiz_mask.mask = WRITEMASK_XYZW;
 346    return MASK4;
 347 }
 348
 349 ".xy"[zw]                 {
 350    yylval->swiz_mask.swizzle = SWIZZLE_INVAL;
 351    yylval->swiz_mask.mask = WRITEMASK_XY
 352       | mask_from_char(yytext[3]);
 353    return MASK3;
 354 }
 355 ".xzw"                    {
 356    yylval->swiz_mask.swizzle = SWIZZLE_INVAL;
 357    yylval->swiz_mask.mask = WRITEMASK_XZW;
 358    return MASK3;
 359 }
 360 ".yzw"                    {
 361    yylval->swiz_mask.swizzle = SWIZZLE_INVAL;
 362    yylval->swiz_mask.mask = WRITEMASK_YZW;
 363    return MASK3;
 364 }
 365
 366 ".x"[yzw]                 {
 367    yylval->swiz_mask.swizzle = SWIZZLE_INVAL;
 368    yylval->swiz_mask.mask = WRITEMASK_X
 369       | mask_from_char(yytext[2]);
 370    return MASK2;
 371 }
 372 ".y"[zw]                  {
 373    yylval->swiz_mask.swizzle = SWIZZLE_INVAL;
 374    yylval->swiz_mask.mask = WRITEMASK_Y
 375       | mask_from_char(yytext[2]);
 376    return MASK2;
 377 }
 378 ".zw"                     {
 379    yylval->swiz_mask.swizzle = SWIZZLE_INVAL;
 380    yylval->swiz_mask.mask = WRITEMASK_ZW;
 381    return MASK2;
 382 }
 383
 384 "."[xyzw]                 {
 385    const unsigned s = swiz_from_char(yytext[1]);
 386    yylval->swiz_mask.swizzle = MAKE_SWIZZLE4(s, s, s, s);
 387    yylval->swiz_mask.mask = mask_from_char(yytext[1]);
 388    return MASK1;
 389 }
 390
 391 "."[xyzw]{4}              {
 392    yylval->swiz_mask.swizzle = MAKE_SWIZZLE4(swiz_from_char(yytext[1]),
 393                                             swiz_from_char(yytext[2]),
 394                                             swiz_from_char(yytext[3]),
 395                                             swiz_from_char(yytext[4]));
 396    yylval->swiz_mask.mask = 0;
 397    return SWIZZLE;
 398 }
 399
 400 ".rgba"                   {
 401    yylval->swiz_mask.swizzle = SWIZZLE_NOOP;
 402    yylval->swiz_mask.mask = WRITEMASK_XYZW;
 403    return_token_or_DOT(require_ARB_fp, MASK4);
 404 }
 405
 406 ".rg"[ba]                 {
 407    yylval->swiz_mask.swizzle = SWIZZLE_INVAL;
 408    yylval->swiz_mask.mask = WRITEMASK_XY
 409       | mask_from_char(yytext[3]);
 410    return_token_or_DOT(require_ARB_fp, MASK3);
 411 }
 412 ".rba"                    {
 413    yylval->swiz_mask.swizzle = SWIZZLE_INVAL;
 414    yylval->swiz_mask.mask = WRITEMASK_XZW;
 415    return_token_or_DOT(require_ARB_fp, MASK3);
 416 }
 417 ".gba"                    {
 418    yylval->swiz_mask.swizzle = SWIZZLE_INVAL;
 419    yylval->swiz_mask.mask = WRITEMASK_YZW;
 420    return_token_or_DOT(require_ARB_fp, MASK3);
 421 }
 422
 423 ".r"[gba]                 {
 424    yylval->swiz_mask.swizzle = SWIZZLE_INVAL;
 425    yylval->swiz_mask.mask = WRITEMASK_X
 426       | mask_from_char(yytext[2]);
 427    return_token_or_DOT(require_ARB_fp, MASK2);
 428 }
 429 ".g"[ba]                  {
 430    yylval->swiz_mask.swizzle = SWIZZLE_INVAL;
 431    yylval->swiz_mask.mask = WRITEMASK_Y
 432       | mask_from_char(yytext[2]);
 433    return_token_or_DOT(require_ARB_fp, MASK2);
 434 }
 435 ".ba"                     {
 436    yylval->swiz_mask.swizzle = SWIZZLE_INVAL;
 437    yylval->swiz_mask.mask = WRITEMASK_ZW;
 438    return_token_or_DOT(require_ARB_fp, MASK2);
 439 }
 440
 441 "."[gba]                  {
 442    const unsigned s = swiz_from_char(yytext[1]);
 443    yylval->swiz_mask.swizzle = MAKE_SWIZZLE4(s, s, s, s);
 444    yylval->swiz_mask.mask = mask_from_char(yytext[1]);
 445    return_token_or_DOT(require_ARB_fp, MASK1);
 446 }
 447
 448
 449 ".r"                      {
 450    if (require_ARB_vp) {
 451       return TEXGEN_R;
 452    } else {
 453       yylval->swiz_mask.swizzle = MAKE_SWIZZLE4(SWIZZLE_X, SWIZZLE_X,
 454                                                 SWIZZLE_X, SWIZZLE_X);
 455       yylval->swiz_mask.mask = WRITEMASK_X;
 456       return MASK1;
 457    }
 458 }
 459
 460 "."[rgba]{4}              {
 461    yylval->swiz_mask.swizzle = MAKE_SWIZZLE4(swiz_from_char(yytext[1]),
 462                                             swiz_from_char(yytext[2]),
 463                                             swiz_from_char(yytext[3]),
 464                                             swiz_from_char(yytext[4]));
 465    yylval->swiz_mask.mask = 0;
 466    return_token_or_DOT(require_ARB_fp, SWIZZLE);
 467 }
 468
 469 "."                       { return DOT; }
 470
 471 \n                        {
 472    yylloc->first_line++;
 473    yylloc->first_column = 1;
 474    yylloc->last_line++;
 475    yylloc->last_column = 1;
 476    yylloc->position++;
 477 }
 478 [ \t\r]+                  /* eat whitespace */ ;
 479 #.*$                      /* eat comments */ ;
 480 .                         { return yytext[0]; }
 481 %%
 482
 483 void
 484 _mesa_program_lexer_ctor(void **scanner, struct asm_parser_state *state,
 485                          const char *string, size_t len)
 486 {
 487    yylex_init_extra(state, scanner);
 488    yy_scan_bytes(string, len, *scanner);
 489 }
 490
 491 void
 492 _mesa_program_lexer_dtor(void *scanner)
 493 {
 494    yylex_destroy(scanner);
 495 }