/
mojoshader_parser_hlsl.lemon
545 lines (448 loc) · 18.2 KB
/
mojoshader_parser_hlsl.lemon
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
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
/**
* MojoShader; generate shader programs from bytecode of compiled
* Direct3D shaders.
*
* Please see the file LICENSE.txt in the source's root directory.
*
* This file written by Ryan C. Gordon.
*/
// This is a Lemon Parser grammar for HLSL. It is based on an ANSI C YACC
// grammar by Jeff Lee: http://www.lysator.liu.se/c/ANSI-C-grammar-y.html
// Lemon is here: http://www.hwaci.com/sw/lemon/ ... the source is included
// with MojoShader, and built with the library, so you don't have to track
// down the dependency.
// HLSL syntax is described, informally, here:
// http://msdn.microsoft.com/en-us/library/bb509615(VS.85).aspx
%name ParseHLSL
%start_symbol shader
%token_prefix TOKEN_HLSL_
%token_type { IncludeState * }
%extra_argument { Context *ctx }
%include {
#ifndef __MOJOSHADER_HLSL_COMPILER__
#error Do not compile this file directly.
#endif
}
%parse_failure {
fprintf(stderr,"Giving up. Parser is hopelessly lost...\n");
}
%stack_overflow {
fprintf(stderr,"Giving up. Parser stack overflow\n");
}
// operator precedence (matches C spec)...
%left COMMA.
%right ASSIGN ADDASSIGN SUBASSIGN MULASSIGN DIVASSIGN MODASSIGN LSHIFTASSIGN
RSHIFTASSIGN ANDASSIGN ORASSIGN XORASSIGN.
%right QUESTION.
%left OROR.
%left ANDAND.
%left OR.
%left XOR.
%left AND.
%left EQL NEQ.
%left LT LEQ GT GEQ.
%left LSHIFT RSHIFT.
%left PLUS MINUS.
%left STAR SLASH PERCENT.
%right TYPECAST EXCLAMATION COMPLEMENT MINUSMINUS PLUSPLUS.
%left DOT LBRACKET RBRACKET LPAREN RPAREN.
// bump up the precedence of ELSE, to avoid shift/reduce conflict on the
// usual "dangling else ambiguity" ...
%right ELSE.
// The rules...
shader ::= compilation_units.
compilation_units ::= compilation_unit.
compilation_units ::= compilation_units compilation_unit.
compilation_unit ::= function_declaration.
compilation_unit ::= function_definition.
compilation_unit ::= global_variable.
compilation_unit ::= typedef_statement.
compilation_unit ::= struct_statement.
function_declaration ::= function_signature SEMICOLON.
function_definition ::= function_signature statement_block.
function_signature ::= function_storageclass function_details semantic.
function_signature ::= function_storageclass function_details.
function_signature ::= function_details semantic.
function_signature ::= function_details.
function_details ::= datatype identifier LPAREN function_arguments RPAREN.
// !!! FIXME: there is a "target" storage class that is the name of the
// !!! FIXME: platform that this function is meant for...but I don't know
// !!! FIXME: what tokens are valid here.
// !!! FIXME: Also, the docs say "one of" inline or target, but I bet you can
// !!! FIXME: specify both.
//function_storageclass ::= target.
function_storageclass ::= INLINE.
function_arguments ::= VOID.
function_arguments ::= function_argument_list.
function_arguments ::= .
function_argument_list ::= function_argument.
function_argument_list ::= function_argument_list COMMA function_argument.
function_argument ::= input_modifier datatype identifier semantic interpolation_mod initializer.
function_argument ::= input_modifier datatype identifier semantic interpolation_mod.
function_argument ::= input_modifier datatype identifier semantic initializer.
function_argument ::= input_modifier datatype identifier semantic.
function_argument ::= input_modifier datatype identifier interpolation_mod initializer.
function_argument ::= input_modifier datatype identifier interpolation_mod.
function_argument ::= input_modifier datatype identifier initializer.
function_argument ::= input_modifier datatype identifier.
function_argument ::= datatype identifier semantic interpolation_mod initializer.
function_argument ::= datatype identifier semantic interpolation_mod.
function_argument ::= datatype identifier semantic initializer.
function_argument ::= datatype identifier semantic.
function_argument ::= datatype identifier interpolation_mod initializer.
function_argument ::= datatype identifier interpolation_mod.
function_argument ::= datatype identifier initializer.
function_argument ::= datatype identifier.
input_modifier ::= IN.
input_modifier ::= INOUT.
input_modifier ::= OUT.
input_modifier ::= UNIFORM.
semantic ::= COLON semantic_name.
semantic_name ::= identifier. // !!! FIXME: list these here
// DX10 only?
interpolation_mod ::= LINEAR.
interpolation_mod ::= CENTROID.
interpolation_mod ::= NOINTERPOLATION.
interpolation_mod ::= NOPERSPECTIVE.
interpolation_mod ::= SAMPLE.
global_variable ::= variable_declaration.
variable_declaration ::= variable_attribute_list datatype variable_declaration_details_list SEMICOLON.
variable_declaration ::= datatype variable_declaration_details_list SEMICOLON.
variable_declaration ::= struct_declaration scalar_or_array SEMICOLON.
variable_declaration_details_list ::= variable_declaration_details.
variable_declaration_details_list ::= variable_declaration_details_list COMMA variable_declaration_details.
variable_declaration_details ::= scalar_or_array semantic annotations initializer variable_lowlevel.
variable_declaration_details ::= scalar_or_array semantic annotations initializer.
variable_declaration_details ::= scalar_or_array semantic annotations variable_lowlevel.
variable_declaration_details ::= scalar_or_array semantic annotations.
variable_declaration_details ::= scalar_or_array semantic initializer variable_lowlevel.
variable_declaration_details ::= scalar_or_array semantic initializer.
variable_declaration_details ::= scalar_or_array semantic variable_lowlevel.
variable_declaration_details ::= scalar_or_array semantic.
variable_declaration_details ::= scalar_or_array annotations initializer variable_lowlevel.
variable_declaration_details ::= scalar_or_array annotations initializer.
variable_declaration_details ::= scalar_or_array annotations variable_lowlevel.
variable_declaration_details ::= scalar_or_array annotations.
variable_declaration_details ::= scalar_or_array initializer variable_lowlevel.
variable_declaration_details ::= scalar_or_array initializer.
variable_declaration_details ::= scalar_or_array variable_lowlevel.
variable_declaration_details ::= scalar_or_array.
// !!! FIXME: we don't handle full sampler declarations at the moment.
struct_declaration ::= STRUCT identifier LBRACE struct_member_list RBRACE.
struct_member_list ::= struct_member.
struct_member_list ::= struct_member_list struct_member.
struct_member ::= interpolation_mod struct_member_details.
struct_member ::= struct_member_details.
struct_member_details ::= scalar_or_array identifier SEMICOLON.
typedef_statement ::= TYPEDEF CONST datatype scalar_or_array.
typedef_statement ::= TYPEDEF datatype scalar_or_array.
variable_lowlevel ::= packoffset register.
variable_lowlevel ::= packoffset.
variable_lowlevel ::= register.
scalar_or_array ::= identifier LBRACKET INT_CONSTANT RBRACKET.
scalar_or_array ::= identifier.
packoffset ::= PACKOFFSET LPAREN identifier identifier RPAREN.
packoffset ::= PACKOFFSET LPAREN identifier RPAREN.
register ::= COLON REGISTER LPAREN identifier RPAREN.
annotations ::= LT annotation_list GT.
annotation_list ::= annotation.
annotation_list ::= annotation_list annotation.
annotation ::= datatype_scalar initializer SEMICOLON.
variable_attribute_list ::= variable_attribute.
variable_attribute_list ::= variable_attribute_list variable_attribute.
variable_attribute ::= EXTERN.
variable_attribute ::= NOINTERPOLATION.
variable_attribute ::= SHARED.
variable_attribute ::= STATIC.
variable_attribute ::= UNIFORM.
variable_attribute ::= VOLATILE.
variable_attribute ::= CONST.
variable_attribute ::= ROWMAJOR.
variable_attribute ::= COLUMNMAJOR.
initializer ::= ASSIGN expression.
intrinsic_datatype ::= datatype_vector.
intrinsic_datatype ::= datatype_matrix.
intrinsic_datatype ::= datatype_scalar.
intrinsic_datatype ::= datatype_sampler.
datatype ::= intrinsic_datatype.
datatype ::= USERTYPE.
datatype_sampler ::= SAMPLER.
datatype_sampler ::= SAMPLER1D.
datatype_sampler ::= SAMPLER2D.
datatype_sampler ::= SAMPLER3D.
datatype_sampler ::= SAMPLERCUBE.
datatype_sampler ::= SAMPLER_STATE.
datatype_sampler ::= SAMPLERSTATE.
datatype_sampler ::= SAMPLERCOMPARISONSTATE.
datatype_scalar ::= BOOL.
datatype_scalar ::= INT.
datatype_scalar ::= UINT.
datatype_scalar ::= HALF.
datatype_scalar ::= FLOAT.
datatype_scalar ::= DOUBLE.
datatype_scalar ::= STRING. // this is for the effects framework, not HLSL.
datatype_scalar ::= SNORM FLOAT.
datatype_scalar ::= UNORM FLOAT.
datatype_scalar ::= BUFFER LT datatype_scalar GT.
// !!! FIXME: MSDN suggests that the matrix ones are just typedefs inserted
// !!! FIXME: before parsing begins, like:
// !!! FIXME: typedef matrix <bool,4,3> bool4x3;
// !!! FIXME: ...maybe we can rip these out of the grammar and just create
// !!! FIXME: them at startup?
datatype_vector ::= VECTOR LT datatype_scalar COMMA INT_CONSTANT GT.
datatype_vector ::= BOOL1.
datatype_vector ::= BOOL2.
datatype_vector ::= BOOL3.
datatype_vector ::= BOOL4.
datatype_vector ::= INT1.
datatype_vector ::= INT2.
datatype_vector ::= INT3.
datatype_vector ::= INT4.
datatype_vector ::= UINT1.
datatype_vector ::= UINT2.
datatype_vector ::= UINT3.
datatype_vector ::= UINT4.
datatype_vector ::= HALF1.
datatype_vector ::= HALF2.
datatype_vector ::= HALF3.
datatype_vector ::= HALF4.
datatype_vector ::= FLOAT1.
datatype_vector ::= FLOAT2.
datatype_vector ::= FLOAT3.
datatype_vector ::= FLOAT4.
datatype_vector ::= DOUBLE1.
datatype_vector ::= DOUBLE2.
datatype_vector ::= DOUBLE3.
datatype_vector ::= DOUBLE4.
datatype_matrix ::= MATRIX LT datatype_scalar COMMA INT_CONSTANT COMMA INT_CONSTANT GT.
datatype_matrix ::= BOOL1X1.
datatype_matrix ::= BOOL1X2.
datatype_matrix ::= BOOL1X3.
datatype_matrix ::= BOOL1X4.
datatype_matrix ::= BOOL2X1.
datatype_matrix ::= BOOL2X2.
datatype_matrix ::= BOOL2X3.
datatype_matrix ::= BOOL2X4.
datatype_matrix ::= BOOL3X1.
datatype_matrix ::= BOOL3X2.
datatype_matrix ::= BOOL3X3.
datatype_matrix ::= BOOL3X4.
datatype_matrix ::= BOOL4X1.
datatype_matrix ::= BOOL4X2.
datatype_matrix ::= BOOL4X3.
datatype_matrix ::= BOOL4X4.
datatype_matrix ::= INT1X1.
datatype_matrix ::= INT1X2.
datatype_matrix ::= INT1X3.
datatype_matrix ::= INT1X4.
datatype_matrix ::= INT2X1.
datatype_matrix ::= INT2X2.
datatype_matrix ::= INT2X3.
datatype_matrix ::= INT2X4.
datatype_matrix ::= INT3X1.
datatype_matrix ::= INT3X2.
datatype_matrix ::= INT3X3.
datatype_matrix ::= INT3X4.
datatype_matrix ::= INT4X1.
datatype_matrix ::= INT4X2.
datatype_matrix ::= INT4X3.
datatype_matrix ::= INT4X4.
datatype_matrix ::= UINT1X1.
datatype_matrix ::= UINT1X2.
datatype_matrix ::= UINT1X3.
datatype_matrix ::= UINT1X4.
datatype_matrix ::= UINT2X1.
datatype_matrix ::= UINT2X2.
datatype_matrix ::= UINT2X3.
datatype_matrix ::= UINT2X4.
datatype_matrix ::= UINT3X1.
datatype_matrix ::= UINT3X2.
datatype_matrix ::= UINT3X3.
datatype_matrix ::= UINT3X4.
datatype_matrix ::= UINT4X1.
datatype_matrix ::= UINT4X2.
datatype_matrix ::= UINT4X3.
datatype_matrix ::= UINT4X4.
datatype_matrix ::= HALF1X1.
datatype_matrix ::= HALF1X2.
datatype_matrix ::= HALF1X3.
datatype_matrix ::= HALF1X4.
datatype_matrix ::= HALF2X1.
datatype_matrix ::= HALF2X2.
datatype_matrix ::= HALF2X3.
datatype_matrix ::= HALF2X4.
datatype_matrix ::= HALF3X1.
datatype_matrix ::= HALF3X2.
datatype_matrix ::= HALF3X3.
datatype_matrix ::= HALF3X4.
datatype_matrix ::= HALF4X1.
datatype_matrix ::= HALF4X2.
datatype_matrix ::= HALF4X3.
datatype_matrix ::= HALF4X4.
datatype_matrix ::= FLOAT1X1.
datatype_matrix ::= FLOAT1X2.
datatype_matrix ::= FLOAT1X3.
datatype_matrix ::= FLOAT1X4.
datatype_matrix ::= FLOAT2X1.
datatype_matrix ::= FLOAT2X2.
datatype_matrix ::= FLOAT2X3.
datatype_matrix ::= FLOAT2X4.
datatype_matrix ::= FLOAT3X1.
datatype_matrix ::= FLOAT3X2.
datatype_matrix ::= FLOAT3X3.
datatype_matrix ::= FLOAT3X4.
datatype_matrix ::= FLOAT4X1.
datatype_matrix ::= FLOAT4X2.
datatype_matrix ::= FLOAT4X3.
datatype_matrix ::= FLOAT4X4.
datatype_matrix ::= DOUBLE1X1.
datatype_matrix ::= DOUBLE1X2.
datatype_matrix ::= DOUBLE1X3.
datatype_matrix ::= DOUBLE1X4.
datatype_matrix ::= DOUBLE2X1.
datatype_matrix ::= DOUBLE2X2.
datatype_matrix ::= DOUBLE2X3.
datatype_matrix ::= DOUBLE2X4.
datatype_matrix ::= DOUBLE3X1.
datatype_matrix ::= DOUBLE3X2.
datatype_matrix ::= DOUBLE3X3.
datatype_matrix ::= DOUBLE3X4.
datatype_matrix ::= DOUBLE4X1.
datatype_matrix ::= DOUBLE4X2.
datatype_matrix ::= DOUBLE4X3.
datatype_matrix ::= DOUBLE4X4.
statement_block ::= LBRACE RBRACE.
statement_block ::= LBRACE statement_list RBRACE.
statement_list ::= statement.
statement_list ::= statement_list statement.
statement ::= return_statement.
statement ::= BREAK SEMICOLON.
statement ::= CONTINUE SEMICOLON.
statement ::= DISCARD SEMICOLON.
statement ::= statement_block.
statement ::= for_statement.
statement ::= do_statement.
statement ::= while_statement.
statement ::= if_statement.
statement ::= switch_statement.
statement ::= variable_declaration.
statement ::= typedef_statement.
statement ::= expression_statement.
statement ::= struct_statement.
struct_statement ::= struct_declaration SEMICOLON.
expression_statement ::= SEMICOLON.
expression_statement ::= expression SEMICOLON.
return_statement ::= RETURN SEMICOLON.
return_statement ::= RETURN expression SEMICOLON.
while_statement ::= loop_attribute while_details.
while_statement ::= while_details.
while_details ::= WHILE LPAREN expression RPAREN statement.
for_statement ::= loop_attribute for_details.
for_statement ::= for_details.
for_details ::= FOR LPAREN expression SEMICOLON expression SEMICOLON expression RPAREN statement.
for_details ::= FOR LPAREN SEMICOLON SEMICOLON RPAREN statement.
for_details ::= FOR LPAREN SEMICOLON SEMICOLON expression RPAREN statement.
for_details ::= FOR LPAREN SEMICOLON expression SEMICOLON RPAREN statement.
for_details ::= FOR LPAREN SEMICOLON expression SEMICOLON expression RPAREN statement.
for_details ::= FOR LPAREN expression SEMICOLON SEMICOLON RPAREN statement.
for_details ::= FOR LPAREN expression SEMICOLON SEMICOLON expression RPAREN statement.
for_details ::= FOR LPAREN expression SEMICOLON expression SEMICOLON RPAREN statement.
loop_attribute ::= UNROLL LPAREN INT_CONSTANT RPAREN.
loop_attribute ::= UNROLL.
loop_attribute ::= LOOP.
do_statement ::= DO statement WHILE LPAREN expression RPAREN SEMICOLON.
if_statement ::= if_attribute IF LPAREN expression RPAREN statement.
if_statement ::= IF LPAREN expression RPAREN statement.
if_statement ::= if_attribute IF LPAREN expression RPAREN statement ELSE statement.
if_statement ::= IF LPAREN expression RPAREN statement ELSE statement.
if_attribute ::= BRANCH.
if_attribute ::= FLATTEN.
switch_statement ::= switch_attribute switch_details.
switch_statement ::= switch_details.
switch_details ::= SWITCH LPAREN expression RPAREN LBRACE switch_case_list RBRACE.
switch_attribute ::= FLATTEN.
switch_attribute ::= BRANCH.
switch_attribute ::= FORCECASE.
switch_attribute ::= CALL.
switch_case_list ::= switch_case.
switch_case_list ::= switch_case_list switch_case.
// You can do math here, apparently, as long as it produces an int constant.
// ...so "case 3+2:" works.
switch_case ::= CASE expression COLON statement_list.
switch_case ::= CASE expression COLON.
switch_case ::= DEFAULT COLON statement_list.
switch_case ::= DEFAULT COLON.
// I may want to do more with this at some point.
identifier ::= IDENTIFIER.
// the expression stuff is based on Jeff Lee's ANSI C grammar.
primary_expr ::= identifier.
primary_expr ::= INT_CONSTANT.
primary_expr ::= FLOAT_CONSTANT.
primary_expr ::= STRING_LITERAL.
primary_expr ::= LPAREN expression RPAREN.
postfix_expr ::= primary_expr.
postfix_expr ::= postfix_expr LBRACKET expression RBRACKET.
postfix_expr ::= postfix_expr LPAREN RPAREN.
postfix_expr ::= postfix_expr LPAREN argument_expr_list RPAREN.
postfix_expr ::= datatype LPAREN argument_expr_list RPAREN. // HLSL constructor
postfix_expr ::= postfix_expr DOT identifier.
postfix_expr ::= postfix_expr PLUSPLUS.
postfix_expr ::= postfix_expr MINUSMINUS.
argument_expr_list ::= assignment_expr.
argument_expr_list ::= argument_expr_list COMMA assignment_expr.
unary_expr ::= postfix_expr.
unary_expr ::= PLUSPLUS unary_expr.
unary_expr ::= MINUSMINUS unary_expr.
unary_expr ::= unary_operator cast_expr.
unary_operator ::= PLUS.
unary_operator ::= MINUS.
unary_operator ::= COMPLEMENT.
unary_operator ::= EXCLAMATION.
cast_expr ::= unary_expr.
cast_expr ::= LPAREN datatype RPAREN cast_expr.
multiplicative_expr ::= cast_expr.
multiplicative_expr ::= multiplicative_expr STAR cast_expr.
multiplicative_expr ::= multiplicative_expr SLASH cast_expr.
multiplicative_expr ::= multiplicative_expr PERCENT cast_expr.
additive_expr ::= multiplicative_expr.
additive_expr ::= additive_expr PLUS multiplicative_expr.
additive_expr ::= additive_expr MINUS multiplicative_expr.
shift_expr ::= additive_expr.
shift_expr ::= shift_expr LSHIFT additive_expr.
shift_expr ::= shift_expr RSHIFT additive_expr.
relational_expr ::= shift_expr.
relational_expr ::= relational_expr LT shift_expr.
relational_expr ::= relational_expr GT shift_expr.
relational_expr ::= relational_expr LEQ shift_expr.
relational_expr ::= relational_expr GEQ shift_expr.
equality_expr ::= relational_expr.
equality_expr ::= equality_expr EQL relational_expr.
equality_expr ::= equality_expr NEQ relational_expr.
and_expr ::= equality_expr.
and_expr ::= and_expr AND equality_expr.
exclusive_or_expr ::= and_expr.
exclusive_or_expr ::= exclusive_or_expr XOR and_expr.
inclusive_or_expr ::= exclusive_or_expr.
inclusive_or_expr ::= inclusive_or_expr OR exclusive_or_expr.
logical_and_expr ::= inclusive_or_expr.
logical_and_expr ::= logical_and_expr ANDAND inclusive_or_expr.
logical_or_expr ::= logical_and_expr.
logical_or_expr ::= logical_or_expr OROR logical_and_expr.
conditional_expr ::= logical_or_expr.
conditional_expr ::= logical_or_expr QUESTION logical_or_expr COLON conditional_expr.
assignment_expr ::= conditional_expr.
assignment_expr ::= unary_expr assignment_operator assignment_expr.
assignment_operator ::= ASSIGN.
assignment_operator ::= MULASSIGN.
assignment_operator ::= DIVASSIGN.
assignment_operator ::= MODASSIGN.
assignment_operator ::= ADDASSIGN.
assignment_operator ::= SUBASSIGN.
assignment_operator ::= LSHIFTASSIGN.
assignment_operator ::= RSHIFTASSIGN.
assignment_operator ::= ANDASSIGN.
assignment_operator ::= XORASSIGN.
assignment_operator ::= ORASSIGN.
expression ::= assignment_expr.
expression ::= expression COMMA assignment_expr.
// end of mojoshader_parser_hlsl.lemon ...