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26 #include "glsl_parser_extras.h"
27 #include "glsl_parser.h"
29 #define YY_USER_ACTION \
32 yylloc->first_column = yycolumn + 1; \
33 yylloc->first_line = yylineno + 1; \
37 #define YY_USER_INIT yylineno = 0; yycolumn = 0;
39 #define IS_UINT (yytext[yyleng - 1] == 'u' || yytext[yyleng - 1] == 'U')
41 /* A macro for handling reserved words and keywords across language versions.
43 * Certain words start out as identifiers, become reserved words in
44 * later language revisions, and finally become language keywords.
46 * For example, consider the following lexer rule:
47 * samplerBuffer KEYWORD(130, 140, SAMPLERBUFFER)
49 * This means that "samplerBuffer" will be treated as:
50 * - a keyword (SAMPLERBUFFER token) ...in GLSL >= 1.40
51 * - a reserved word - error ...in GLSL >= 1.30
52 * - an identifier ...in GLSL < 1.30
54 #define KEYWORD(reserved_version, allowed_version, token) \
56 if (yyextra->language_version >= allowed_version) { \
58 } else if (yyextra->language_version >= reserved_version) { \
59 _mesa_glsl_error(yylloc, yyextra, \
60 "Illegal use of reserved word `%s'", yytext); \
63 yylval->identifier = strdup(yytext); \
68 /* The ES macro can be used in KEYWORD checks:
70 * word KEYWORD(110 || ES, 400, TOKEN)
71 * ...means the word is reserved in GLSL ES 1.00, while
73 * word KEYWORD(110, 130 || ES, TOKEN)
74 * ...means the word is a legal keyword in GLSL ES 1.00.
76 #define ES yyextra->es_shader
79 %option bison-bridge bison-locations reentrant noyywrap
80 %option nounput noyy_top_state
81 %option never-interactive
82 %option prefix="_mesa_glsl_"
83 %option extra-type="struct _mesa_glsl_parse_state *"
88 HEX_INT 0[xX][0-9a-fA-F]+
90 INT ({DEC_INT}|{HEX_INT}|{OCT_INT})
98 /* Preprocessor tokens. */
100 ^[ \t]*#[ \t]*version { BEGIN PP; return VERSION; }
101 ^[ \t]*#[ \t]*extension { BEGIN PP; return EXTENSION; }
102 {HASH}line{SPCP}{INT}{SPCP}{INT}{SPC}$ {
103 /* Eat characters until the first digit is
107 while (!isdigit(*ptr))
110 /* Subtract one from the line number because
111 * yylineno is zero-based instead of
114 yylineno = strtol(ptr, &ptr, 0) - 1;
115 yylloc->source = strtol(ptr, NULL, 0);
117 {HASH}line{SPCP}{INT}{SPC}$ {
118 /* Eat characters until the first digit is
122 while (!isdigit(*ptr))
125 /* Subtract one from the line number because
126 * yylineno is zero-based instead of
129 yylineno = strtol(ptr, &ptr, 0) - 1;
131 ^{SPC}#{SPC}pragma{SPCP}debug{SPC}\({SPC}on{SPC}\) {
133 return PRAGMA_DEBUG_ON;
135 ^{SPC}#{SPC}pragma{SPCP}debug{SPC}\({SPC}off{SPC}\) {
137 return PRAGMA_DEBUG_OFF;
139 ^{SPC}#{SPC}pragma{SPCP}optimize{SPC}\({SPC}on{SPC}\) {
141 return PRAGMA_OPTIMIZE_ON;
143 ^{SPC}#{SPC}pragma{SPCP}optimize{SPC}\({SPC}off{SPC}\) {
145 return PRAGMA_OPTIMIZE_OFF;
147 ^{SPC}#{SPC}pragma{SPCP} { BEGIN PRAGMA; }
149 <PRAGMA>\n { BEGIN 0; yylineno++; yycolumn = 0; }
155 <PP>[_a-zA-Z][_a-zA-Z0-9]* {
156 yylval->identifier = strdup(yytext);
160 yylval->n = strtol(yytext, NULL, 10);
163 <PP>\n { BEGIN 0; yylineno++; yycolumn = 0; return EOL; }
165 \n { yylineno++; yycolumn = 0; }
167 attribute return ATTRIBUTE;
168 const return CONST_TOK;
169 bool return BOOL_TOK;
170 float return FLOAT_TOK;
172 uint KEYWORD(130, 130, UINT_TOK);
175 continue return CONTINUE;
181 discard return DISCARD;
182 return return RETURN;
190 uvec2 KEYWORD(130, 130, UVEC2);
191 uvec3 KEYWORD(130, 130, UVEC3);
192 uvec4 KEYWORD(130, 130, UVEC4);
199 mat2x2 KEYWORD(120, 120, MAT2X2);
200 mat2x3 KEYWORD(120, 120, MAT2X3);
201 mat2x4 KEYWORD(120, 120, MAT2X4);
202 mat3x2 KEYWORD(120, 120, MAT3X2);
203 mat3x3 KEYWORD(120, 120, MAT3X3);
204 mat3x4 KEYWORD(120, 120, MAT3X4);
205 mat4x2 KEYWORD(120, 120, MAT4X2);
206 mat4x3 KEYWORD(120, 120, MAT4X3);
207 mat4x4 KEYWORD(120, 120, MAT4X4);
211 inout return INOUT_TOK;
212 uniform return UNIFORM;
213 varying return VARYING;
214 centroid KEYWORD(120, 120, CENTROID);
215 invariant KEYWORD(120 || ES, 120 || ES, INVARIANT);
216 flat KEYWORD(130 || ES, 130, FLAT);
217 smooth KEYWORD(130, 130, SMOOTH);
218 noperspective KEYWORD(130, 130, NOPERSPECTIVE);
220 sampler1D return SAMPLER1D;
221 sampler2D return SAMPLER2D;
222 sampler3D return SAMPLER3D;
223 samplerCube return SAMPLERCUBE;
224 sampler1DArray KEYWORD(130, 130, SAMPLER1DARRAY);
225 sampler2DArray KEYWORD(130, 130, SAMPLER2DARRAY);
226 sampler1DShadow return SAMPLER1DSHADOW;
227 sampler2DShadow return SAMPLER2DSHADOW;
228 samplerCubeShadow KEYWORD(130, 130, SAMPLERCUBESHADOW);
229 sampler1DArrayShadow KEYWORD(130, 130, SAMPLER1DARRAYSHADOW);
230 sampler2DArrayShadow KEYWORD(130, 130, SAMPLER2DARRAYSHADOW);
231 isampler1D KEYWORD(130, 130, ISAMPLER1D);
232 isampler2D KEYWORD(130, 130, ISAMPLER2D);
233 isampler3D KEYWORD(130, 130, ISAMPLER3D);
234 isamplerCube KEYWORD(130, 130, ISAMPLERCUBE);
235 isampler1DArray KEYWORD(130, 130, ISAMPLER1DARRAY);
236 isampler2DArray KEYWORD(130, 130, ISAMPLER2DARRAY);
237 usampler1D KEYWORD(130, 130, USAMPLER1D);
238 usampler2D KEYWORD(130, 130, USAMPLER2D);
239 usampler3D KEYWORD(130, 130, USAMPLER3D);
240 usamplerCube KEYWORD(130, 130, USAMPLERCUBE);
241 usampler1DArray KEYWORD(130, 130, USAMPLER1DARRAY);
242 usampler2DArray KEYWORD(130, 130, USAMPLER2DARRAY);
245 struct return STRUCT;
246 void return VOID_TOK;
249 if ((yyextra->language_version >= 140)
250 || yyextra->ARB_explicit_attrib_location_enable
251 || (yyextra->ARB_fragment_coord_conventions_enable)){
254 yylval->identifier = strdup(yytext);
269 ">>" return RIGHT_OP;
271 \*= return MUL_ASSIGN;
272 \/= return DIV_ASSIGN;
273 \+= return ADD_ASSIGN;
274 \%= return MOD_ASSIGN;
275 \<\<= return LEFT_ASSIGN;
276 >>= return RIGHT_ASSIGN;
277 &= return AND_ASSIGN;
278 "^=" return XOR_ASSIGN;
279 \|= return OR_ASSIGN;
280 -= return SUB_ASSIGN;
283 yylval->n = strtol(yytext, NULL, 10);
284 return IS_UINT ? UINTCONSTANT : INTCONSTANT;
286 0[xX][0-9a-fA-F]+[uU]? {
287 yylval->n = strtol(yytext + 2, NULL, 16);
288 return IS_UINT ? UINTCONSTANT : INTCONSTANT;
291 yylval->n = strtol(yytext, NULL, 8);
292 return IS_UINT ? UINTCONSTANT : INTCONSTANT;
295 [0-9]+\.[0-9]+([eE][+-]?[0-9]+)?[fF]? {
296 yylval->real = strtod(yytext, NULL);
297 return FLOATCONSTANT;
299 \.[0-9]+([eE][+-]?[0-9]+)?[fF]? {
300 yylval->real = strtod(yytext, NULL);
301 return FLOATCONSTANT;
303 [0-9]+\.([eE][+-]?[0-9]+)?[fF]? {
304 yylval->real = strtod(yytext, NULL);
305 return FLOATCONSTANT;
307 [0-9]+[eE][+-]?[0-9]+[fF]? {
308 yylval->real = strtod(yytext, NULL);
309 return FLOATCONSTANT;
312 yylval->real = strtod(yytext, NULL);
313 return FLOATCONSTANT;
326 /* Reserved words in GLSL 1.10. */
327 asm KEYWORD(110 || ES, 999, ASM);
328 class KEYWORD(110 || ES, 999, CLASS);
329 union KEYWORD(110 || ES, 999, UNION);
330 enum KEYWORD(110 || ES, 999, ENUM);
331 typedef KEYWORD(110 || ES, 999, TYPEDEF);
332 template KEYWORD(110 || ES, 999, TEMPLATE);
333 this KEYWORD(110 || ES, 999, THIS);
334 packed KEYWORD(110 || ES, 999, PACKED_TOK);
335 goto KEYWORD(110 || ES, 999, GOTO);
336 switch KEYWORD(110 || ES, 130, SWITCH);
337 default KEYWORD(110 || ES, 130, DEFAULT);
338 inline KEYWORD(110 || ES, 999, INLINE_TOK);
339 noinline KEYWORD(110 || ES, 999, NOINLINE);
340 volatile KEYWORD(110 || ES, 999, VOLATILE);
341 public KEYWORD(110 || ES, 999, PUBLIC_TOK);
342 static KEYWORD(110 || ES, 999, STATIC);
343 extern KEYWORD(110 || ES, 999, EXTERN);
344 external KEYWORD(110 || ES, 999, EXTERNAL);
345 interface KEYWORD(110 || ES, 999, INTERFACE);
346 long KEYWORD(110 || ES, 999, LONG_TOK);
347 short KEYWORD(110 || ES, 999, SHORT_TOK);
348 double KEYWORD(110 || ES, 400, DOUBLE_TOK);
349 half KEYWORD(110 || ES, 999, HALF);
350 fixed KEYWORD(110 || ES, 999, FIXED_TOK);
351 unsigned KEYWORD(110 || ES, 999, UNSIGNED);
352 input KEYWORD(110 || ES, 999, INPUT_TOK);
353 output KEYWORD(110 || ES, 999, OUTPUT);
354 hvec2 KEYWORD(110 || ES, 999, HVEC2);
355 hvec3 KEYWORD(110 || ES, 999, HVEC3);
356 hvec4 KEYWORD(110 || ES, 999, HVEC4);
357 dvec2 KEYWORD(110 || ES, 400, DVEC2);
358 dvec3 KEYWORD(110 || ES, 400, DVEC3);
359 dvec4 KEYWORD(110 || ES, 400, DVEC4);
360 fvec2 KEYWORD(110 || ES, 999, FVEC2);
361 fvec3 KEYWORD(110 || ES, 999, FVEC3);
362 fvec4 KEYWORD(110 || ES, 999, FVEC4);
363 sampler2DRect return SAMPLER2DRECT;
364 sampler3DRect KEYWORD(110 || ES, 999, SAMPLER3DRECT);
365 sampler2DRectShadow return SAMPLER2DRECTSHADOW;
366 sizeof KEYWORD(110 || ES, 999, SIZEOF);
367 cast KEYWORD(110 || ES, 999, CAST);
368 namespace KEYWORD(110 || ES, 999, NAMESPACE);
369 using KEYWORD(110 || ES, 999, USING);
371 /* Additional reserved words in GLSL 1.20. */
372 lowp KEYWORD(120, 130 || ES, LOWP);
373 mediump KEYWORD(120, 130 || ES, MEDIUMP);
374 highp KEYWORD(120, 130 || ES, HIGHP);
375 precision KEYWORD(120, 130 || ES, PRECISION);
377 /* Additional reserved words in GLSL 1.30. */
378 case KEYWORD(130, 130, CASE);
379 common KEYWORD(130, 999, COMMON);
380 partition KEYWORD(130, 999, PARTITION);
381 active KEYWORD(130, 999, ACTIVE);
382 superp KEYWORD(130 || ES, 999, SUPERP);
383 samplerBuffer KEYWORD(130, 140, SAMPLERBUFFER);
384 filter KEYWORD(130, 999, FILTER);
385 image1D KEYWORD(130, 999, IMAGE1D);
386 image2D KEYWORD(130, 999, IMAGE2D);
387 image3D KEYWORD(130, 999, IMAGE3D);
388 imageCube KEYWORD(130, 999, IMAGECUBE);
389 iimage1D KEYWORD(130, 999, IIMAGE1D);
390 iimage2D KEYWORD(130, 999, IIMAGE2D);
391 iimage3D KEYWORD(130, 999, IIMAGE3D);
392 iimageCube KEYWORD(130, 999, IIMAGECUBE);
393 uimage1D KEYWORD(130, 999, UIMAGE1D);
394 uimage2D KEYWORD(130, 999, UIMAGE2D);
395 uimage3D KEYWORD(130, 999, UIMAGE3D);
396 uimageCube KEYWORD(130, 999, UIMAGECUBE);
397 image1DArray KEYWORD(130, 999, IMAGE1DARRAY);
398 image2DArray KEYWORD(130, 999, IMAGE2DARRAY);
399 iimage1DArray KEYWORD(130, 999, IIMAGE1DARRAY);
400 iimage2DArray KEYWORD(130, 999, IIMAGE2DARRAY);
401 uimage1DArray KEYWORD(130, 999, UIMAGE1DARRAY);
402 uimage2DArray KEYWORD(130, 999, UIMAGE2DARRAY);
403 image1DShadow KEYWORD(130, 999, IMAGE1DSHADOW);
404 image2DShadow KEYWORD(130, 999, IMAGE2DSHADOW);
405 image1DArrayShadow KEYWORD(130, 999, IMAGE1DARRAYSHADOW);
406 image2DArrayShadow KEYWORD(130, 999, IMAGE2DARRAYSHADOW);
407 imageBuffer KEYWORD(130, 999, IMAGEBUFFER);
408 iimageBuffer KEYWORD(130, 999, IIMAGEBUFFER);
409 uimageBuffer KEYWORD(130, 999, UIMAGEBUFFER);
410 row_major KEYWORD(130, 999, ROW_MAJOR);
412 [_a-zA-Z][_a-zA-Z0-9]* {
413 struct _mesa_glsl_parse_state *state = yyextra;
415 yylval->identifier = talloc_strdup(ctx, yytext);
419 . { return yytext[0]; }
424 _mesa_glsl_lexer_ctor(struct _mesa_glsl_parse_state *state, const char *string)
426 yylex_init_extra(state, & state->scanner);
427 yy_scan_string(string, state->scanner);
431 _mesa_glsl_lexer_dtor(struct _mesa_glsl_parse_state *state)
433 yylex_destroy(state->scanner);