1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
|
%{
/*
* Copyright © 2008, 2009 Intel Corporation
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#include <ctype.h>
#include "ast.h"
#include "glsl_parser_extras.h"
#include "glsl_parser.h"
#define YY_USER_ACTION \
do { \
yylloc->source = 0; \
yylloc->first_column = yycolumn + 1; \
yylloc->first_line = yylineno + 1; \
yycolumn += yyleng; \
} while(0);
#define YY_USER_INIT yylineno = 0; yycolumn = 0;
#define TOKEN_OR_IDENTIFIER(version, token) \
do { \
if (yyextra->language_version >= version) { \
return token; \
} else { \
yylval->identifier = strdup(yytext); \
return IDENTIFIER; \
} \
} while (0)
/* Handle reserved words in GLSL ES (version 100) */
#define TOKEN_OR_IDENTIFIER_ES(version, token) \
do { \
if (yyextra->es_shader) { \
return token; \
} else { \
TOKEN_OR_IDENTIFIER(version, token); \
} \
} while (0)
#define RESERVED_WORD(version, token) \
do { \
if (yyextra->language_version >= version) { \
return token; \
} else { \
_mesa_glsl_error(yylloc, yyextra, \
"Illegal use of reserved word `%s'", yytext); \
return ERROR_TOK; \
} \
} while (0)
%}
%option bison-bridge bison-locations reentrant noyywrap
%option nounput noyy_top_state
%option never-interactive
%option prefix="_mesa_glsl_"
%option extra-type="struct _mesa_glsl_parse_state *"
%x PP PRAGMA
DEC_INT [1-9][0-9]*
HEX_INT 0[xX][0-9a-fA-F]+
OCT_INT 0[0-7]*
INT ({DEC_INT}|{HEX_INT}|{OCT_INT})
SPC [ \t]*
SPCP [ \t]+
HASH ^{SPC}#{SPC}
%%
[ \r\t]+ ;
/* Preprocessor tokens. */
^[ \t]*#[ \t]*$ ;
^[ \t]*#[ \t]*version { BEGIN PP; return VERSION; }
^[ \t]*#[ \t]*extension { BEGIN PP; return EXTENSION; }
{HASH}line{SPCP}{INT}{SPCP}{INT}{SPC}$ {
/* Eat characters until the first digit is
* encountered
*/
char *ptr = yytext;
while (!isdigit(*ptr))
ptr++;
/* Subtract one from the line number because
* yylineno is zero-based instead of
* one-based.
*/
yylineno = strtol(ptr, &ptr, 0) - 1;
yylloc->source = strtol(ptr, NULL, 0);
}
{HASH}line{SPCP}{INT}{SPC}$ {
/* Eat characters until the first digit is
* encountered
*/
char *ptr = yytext;
while (!isdigit(*ptr))
ptr++;
/* Subtract one from the line number because
* yylineno is zero-based instead of
* one-based.
*/
yylineno = strtol(ptr, &ptr, 0) - 1;
}
^{SPC}#{SPC}pragma{SPCP}debug{SPC}\({SPC}on{SPC}\) {
BEGIN PP;
return PRAGMA_DEBUG_ON;
}
^{SPC}#{SPC}pragma{SPCP}debug{SPC}\({SPC}off{SPC}\) {
BEGIN PP;
return PRAGMA_DEBUG_OFF;
}
^{SPC}#{SPC}pragma{SPCP}optimize{SPC}\({SPC}on{SPC}\) {
BEGIN PP;
return PRAGMA_OPTIMIZE_ON;
}
^{SPC}#{SPC}pragma{SPCP}optimize{SPC}\({SPC}off{SPC}\) {
BEGIN PP;
return PRAGMA_OPTIMIZE_OFF;
}
^{SPC}#{SPC}pragma{SPCP} { BEGIN PRAGMA; }
<PRAGMA>\n { BEGIN 0; yylineno++; yycolumn = 0; }
<PRAGMA>. { }
<PP>\/\/[^\n]* { }
<PP>[ \t\r]* { }
<PP>: return COLON;
<PP>[_a-zA-Z][_a-zA-Z0-9]* {
yylval->identifier = strdup(yytext);
return IDENTIFIER;
}
<PP>[1-9][0-9]* {
yylval->n = strtol(yytext, NULL, 10);
return INTCONSTANT;
}
<PP>\n { BEGIN 0; yylineno++; yycolumn = 0; return EOL; }
\n { yylineno++; yycolumn = 0; }
attribute return ATTRIBUTE;
const return CONST_TOK;
bool return BOOL_TOK;
float return FLOAT_TOK;
int return INT_TOK;
uint TOKEN_OR_IDENTIFIER(130, UINT_TOK);
break return BREAK;
continue return CONTINUE;
do return DO;
while return WHILE;
else return ELSE;
for return FOR;
if return IF;
discard return DISCARD;
return return RETURN;
bvec2 return BVEC2;
bvec3 return BVEC3;
bvec4 return BVEC4;
ivec2 return IVEC2;
ivec3 return IVEC3;
ivec4 return IVEC4;
uvec2 TOKEN_OR_IDENTIFIER(130, UVEC2);
uvec3 TOKEN_OR_IDENTIFIER(130, UVEC3);
uvec4 TOKEN_OR_IDENTIFIER(130, UVEC4);
vec2 return VEC2;
vec3 return VEC3;
vec4 return VEC4;
mat2 return MAT2X2;
mat3 return MAT3X3;
mat4 return MAT4X4;
mat2x2 TOKEN_OR_IDENTIFIER(120, MAT2X2);
mat2x3 TOKEN_OR_IDENTIFIER(120, MAT2X3);
mat2x4 TOKEN_OR_IDENTIFIER(120, MAT2X4);
mat3x2 TOKEN_OR_IDENTIFIER(120, MAT3X2);
mat3x3 TOKEN_OR_IDENTIFIER(120, MAT3X3);
mat3x4 TOKEN_OR_IDENTIFIER(120, MAT3X4);
mat4x2 TOKEN_OR_IDENTIFIER(120, MAT4X2);
mat4x3 TOKEN_OR_IDENTIFIER(120, MAT4X3);
mat4x4 TOKEN_OR_IDENTIFIER(120, MAT4X4);
in return IN_TOK;
out return OUT_TOK;
inout return INOUT_TOK;
uniform return UNIFORM;
varying return VARYING;
centroid TOKEN_OR_IDENTIFIER(120, CENTROID);
invariant TOKEN_OR_IDENTIFIER_ES(120, INVARIANT);
flat TOKEN_OR_IDENTIFIER_ES(130, FLAT);
smooth TOKEN_OR_IDENTIFIER(130, SMOOTH);
noperspective TOKEN_OR_IDENTIFIER(130, NOPERSPECTIVE);
sampler1D return SAMPLER1D;
sampler2D return SAMPLER2D;
sampler3D return SAMPLER3D;
samplerCube return SAMPLERCUBE;
sampler1DShadow return SAMPLER1DSHADOW;
sampler2DShadow return SAMPLER2DSHADOW;
struct return STRUCT;
void return VOID_TOK;
layout {
if ((yyextra->language_version >= 140)
|| yyextra->ARB_explicit_attrib_location_enable
|| (yyextra->ARB_fragment_coord_conventions_enable)){
return LAYOUT_TOK;
} else {
yylval->identifier = strdup(yytext);
return IDENTIFIER;
}
}
\+\+ return INC_OP;
-- return DEC_OP;
\<= return LE_OP;
>= return GE_OP;
== return EQ_OP;
!= return NE_OP;
&& return AND_OP;
\|\| return OR_OP;
"^^" return XOR_OP;
"<<" return LEFT_OP;
">>" return RIGHT_OP;
\*= return MUL_ASSIGN;
\/= return DIV_ASSIGN;
\+= return ADD_ASSIGN;
\%= return MOD_ASSIGN;
\<\<= return LEFT_ASSIGN;
>>= return RIGHT_ASSIGN;
&= return AND_ASSIGN;
^= return XOR_ASSIGN;
\|= return OR_ASSIGN;
-= return SUB_ASSIGN;
[1-9][0-9]* {
yylval->n = strtol(yytext, NULL, 10);
return INTCONSTANT;
}
0[xX][0-9a-fA-F]+ {
yylval->n = strtol(yytext + 2, NULL, 16);
return INTCONSTANT;
}
0[0-7]* {
yylval->n = strtol(yytext, NULL, 8);
return INTCONSTANT;
}
[0-9]+\.[0-9]+([eE][+-]?[0-9]+)?[fF]? {
yylval->real = strtod(yytext, NULL);
return FLOATCONSTANT;
}
\.[0-9]+([eE][+-]?[0-9]+)?[fF]? {
yylval->real = strtod(yytext, NULL);
return FLOATCONSTANT;
}
[0-9]+\.([eE][+-]?[0-9]+)?[fF]? {
yylval->real = strtod(yytext, NULL);
return FLOATCONSTANT;
}
[0-9]+[eE][+-]?[0-9]+[fF]? {
yylval->real = strtod(yytext, NULL);
return FLOATCONSTANT;
}
[0-9]+[fF] {
yylval->real = strtod(yytext, NULL);
return FLOATCONSTANT;
}
true {
yylval->n = 1;
return BOOLCONSTANT;
}
false {
yylval->n = 0;
return BOOLCONSTANT;
}
/* Reserved words in GLSL 1.10. */
asm RESERVED_WORD(999, ASM);
class RESERVED_WORD(999, CLASS);
union RESERVED_WORD(999, UNION);
enum RESERVED_WORD(999, ENUM);
typedef RESERVED_WORD(999, TYPEDEF);
template RESERVED_WORD(999, TEMPLATE);
this RESERVED_WORD(999, THIS);
packed RESERVED_WORD(999, PACKED_TOK);
goto RESERVED_WORD(999, GOTO);
switch RESERVED_WORD(130, SWITCH);
default RESERVED_WORD(130, DEFAULT);
inline RESERVED_WORD(999, INLINE_TOK);
noinline RESERVED_WORD(999, NOINLINE);
volatile RESERVED_WORD(999, VOLATILE);
public RESERVED_WORD(999, PUBLIC_TOK);
static RESERVED_WORD(999, STATIC);
extern RESERVED_WORD(999, EXTERN);
external RESERVED_WORD(999, EXTERNAL);
interface RESERVED_WORD(999, INTERFACE);
long RESERVED_WORD(999, LONG_TOK);
short RESERVED_WORD(999, SHORT_TOK);
double RESERVED_WORD(999, DOUBLE_TOK);
half RESERVED_WORD(999, HALF);
fixed RESERVED_WORD(999, FIXED_TOK);
unsigned RESERVED_WORD(999, UNSIGNED);
input RESERVED_WORD(999, INPUT_TOK);
output RESERVED_WORD(999, OUTPUT);
hvec2 RESERVED_WORD(999, HVEC2);
hvec3 RESERVED_WORD(999, HVEC3);
hvec4 RESERVED_WORD(999, HVEC4);
dvec2 RESERVED_WORD(999, DVEC2);
dvec3 RESERVED_WORD(999, DVEC3);
dvec4 RESERVED_WORD(999, DVEC4);
fvec2 RESERVED_WORD(999, FVEC2);
fvec3 RESERVED_WORD(999, FVEC3);
fvec4 RESERVED_WORD(999, FVEC4);
sampler2DRect return SAMPLER2DRECT;
sampler3DRect RESERVED_WORD(999, SAMPLER3DRECT);
sampler2DRectShadow return SAMPLER2DRECTSHADOW;
sizeof RESERVED_WORD(999, SIZEOF);
cast RESERVED_WORD(999, CAST);
namespace RESERVED_WORD(999, NAMESPACE);
using RESERVED_WORD(999, USING);
/* Additional reserved words in GLSL 1.20. */
lowp TOKEN_OR_IDENTIFIER_ES(120, LOWP);
mediump TOKEN_OR_IDENTIFIER_ES(120, MEDIUMP);
highp TOKEN_OR_IDENTIFIER_ES(120, HIGHP);
precision TOKEN_OR_IDENTIFIER_ES(120, PRECISION);
/* Additional reserved words in GLSL 1.30. */
common TOKEN_OR_IDENTIFIER(130, COMMON);
partition TOKEN_OR_IDENTIFIER(130, PARTITION);
active TOKEN_OR_IDENTIFIER(130, ACTIVE);
superp TOKEN_OR_IDENTIFIER_ES(130, SUPERP);
samplerBuffer TOKEN_OR_IDENTIFIER(130, SAMPLERBUFFER);
filter TOKEN_OR_IDENTIFIER(130, FILTER);
image1D TOKEN_OR_IDENTIFIER(130, IMAGE1D);
image2D TOKEN_OR_IDENTIFIER(130, IMAGE2D);
image3D TOKEN_OR_IDENTIFIER(130, IMAGE3D);
imageCube TOKEN_OR_IDENTIFIER(130, IMAGECUBE);
iimage1D TOKEN_OR_IDENTIFIER(130, IIMAGE1D);
iimage2D TOKEN_OR_IDENTIFIER(130, IIMAGE2D);
iimage3D TOKEN_OR_IDENTIFIER(130, IIMAGE3D);
iimageCube TOKEN_OR_IDENTIFIER(130, IIMAGECUBE);
uimage1D TOKEN_OR_IDENTIFIER(130, UIMAGE1D);
uimage2D TOKEN_OR_IDENTIFIER(130, UIMAGE2D);
uimage3D TOKEN_OR_IDENTIFIER(130, UIMAGE3D);
uimageCube TOKEN_OR_IDENTIFIER(130, UIMAGECUBE);
image1DArray TOKEN_OR_IDENTIFIER(130, IMAGE1DARRAY);
image2DArray TOKEN_OR_IDENTIFIER(130, IMAGE2DARRAY);
iimage1DArray TOKEN_OR_IDENTIFIER(130, IIMAGE1DARRAY);
iimage2DArray TOKEN_OR_IDENTIFIER(130, IIMAGE2DARRAY);
uimage1DArray TOKEN_OR_IDENTIFIER(130, UIMAGE1DARRAY);
uimage2DArray TOKEN_OR_IDENTIFIER(130, UIMAGE2DARRAY);
image1DShadow TOKEN_OR_IDENTIFIER(130, IMAGE1DSHADOW);
image2DShadow TOKEN_OR_IDENTIFIER(130, IMAGE2DSHADOW);
imageBuffer TOKEN_OR_IDENTIFIER(130, IMAGEBUFFER);
iimageBuffer TOKEN_OR_IDENTIFIER(130, IIMAGEBUFFER);
uimageBuffer TOKEN_OR_IDENTIFIER(130, UIMAGEBUFFER);
row_major TOKEN_OR_IDENTIFIER(130, ROW_MAJOR);
[_a-zA-Z][_a-zA-Z0-9]* {
struct _mesa_glsl_parse_state *state = yyextra;
void *ctx = state;
yylval->identifier = talloc_strdup(ctx, yytext);
return IDENTIFIER;
}
. { return yytext[0]; }
%%
void
_mesa_glsl_lexer_ctor(struct _mesa_glsl_parse_state *state, const char *string)
{
yylex_init_extra(state, & state->scanner);
yy_scan_string(string, state->scanner);
}
void
_mesa_glsl_lexer_dtor(struct _mesa_glsl_parse_state *state)
{
yylex_destroy(state->scanner);
}
|