2 * Mesa 3-D graphics library
5 * Copyright (C) 2004-2006 Brian Paul All Rights Reserved.
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the "Software"),
9 * to deal in the Software without restriction, including without limitation
10 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
11 * and/or sell copies of the Software, and to permit persons to whom the
12 * Software is furnished to do so, subject to the following conditions:
14 * The above copyright notice and this permission notice shall be included
15 * in all copies or substantial portions of the Software.
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
21 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
22 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 * \file slang_shader.syn
27 * slang vertex/fragment shader syntax
33 * syn2c slang_shader.syn > slang_shader_syn.h
35 * when modifying or extending this file, several things must be taken into consideration:
36 * - when adding new operators that were marked as reserved in the initial specification,
37 * one must only uncomment particular lines of code that refer to operators being added;
38 * - when adding new shader target, one must reserve new value for shader_type register and
39 * use it in .if constructs for symbols that are exclusive for that shader;
40 * - some symbols mimic output of other symbols - the best example is the "for" construct:
41 * expression "for (foo(); ; bar())" is seen as "for (foo(); true; bar())" by the output
42 * processor - hence, special care must be taken when rearranging output of essential symbols;
43 * - order of single-quoted tokens does matter in alternatives - so do not parse "<" operator
44 * before "<<" and "<<" before "<<=";
45 * - all double-quoted tokens are internally preprocessed to eliminate problems with parsing
46 * strings that are prefixes of other strings, like "sampler1D" and "sampler1DShadow";
49 .syntax translation_unit;
51 /* revision number - increment after each change affecting emitted output */
54 /* external declaration */
55 .emtcode EXTERNAL_NULL 0
56 .emtcode EXTERNAL_FUNCTION_DEFINITION 1
57 .emtcode EXTERNAL_DECLARATION 2
60 .emtcode DECLARATION_FUNCTION_PROTOTYPE 1
61 .emtcode DECLARATION_INIT_DECLARATOR_LIST 2
64 .emtcode FUNCTION_ORDINARY 0
65 .emtcode FUNCTION_CONSTRUCTOR 1
66 .emtcode FUNCTION_OPERATOR 2
69 .emtcode OPERATOR_ADDASSIGN 1
70 .emtcode OPERATOR_SUBASSIGN 2
71 .emtcode OPERATOR_MULASSIGN 3
72 .emtcode OPERATOR_DIVASSIGN 4
73 /*.emtcode OPERATOR_MODASSIGN 5*/
74 /*.emtcode OPERATOR_LSHASSIGN 6*/
75 /*.emtcode OPERATOR_RSHASSIGN 7*/
76 /*.emtcode OPERATOR_ORASSIGN 8*/
77 /*.emtcode OPERATOR_XORASSIGN 9*/
78 /*.emtcode OPERATOR_ANDASSIGN 10*/
79 .emtcode OPERATOR_LOGICALXOR 11
80 /*.emtcode OPERATOR_BITOR 12*/
81 /*.emtcode OPERATOR_BITXOR 13*/
82 /*.emtcode OPERATOR_BITAND 14*/
83 .emtcode OPERATOR_LESS 15
84 .emtcode OPERATOR_GREATER 16
85 .emtcode OPERATOR_LESSEQUAL 17
86 .emtcode OPERATOR_GREATEREQUAL 18
87 /*.emtcode OPERATOR_LSHIFT 19*/
88 /*.emtcode OPERATOR_RSHIFT 20*/
89 .emtcode OPERATOR_MULTIPLY 21
90 .emtcode OPERATOR_DIVIDE 22
91 /*.emtcode OPERATOR_MODULUS 23*/
92 .emtcode OPERATOR_INCREMENT 24
93 .emtcode OPERATOR_DECREMENT 25
94 .emtcode OPERATOR_PLUS 26
95 .emtcode OPERATOR_MINUS 27
96 /*.emtcode OPERATOR_COMPLEMENT 28*/
97 .emtcode OPERATOR_NOT 29
99 /* init declarator list */
100 .emtcode DECLARATOR_NONE 0
101 .emtcode DECLARATOR_NEXT 1
103 /* variable declaration */
104 .emtcode VARIABLE_NONE 0
105 .emtcode VARIABLE_IDENTIFIER 1
106 .emtcode VARIABLE_INITIALIZER 2
107 .emtcode VARIABLE_ARRAY_EXPLICIT 3
108 .emtcode VARIABLE_ARRAY_UNKNOWN 4
111 .emtcode TYPE_QUALIFIER_NONE 0
112 .emtcode TYPE_QUALIFIER_CONST 1
113 .emtcode TYPE_QUALIFIER_ATTRIBUTE 2
114 .emtcode TYPE_QUALIFIER_VARYING 3
115 .emtcode TYPE_QUALIFIER_UNIFORM 4
116 .emtcode TYPE_QUALIFIER_FIXEDOUTPUT 5
117 .emtcode TYPE_QUALIFIER_FIXEDINPUT 6
120 .emtcode TYPE_SPECIFIER_VOID 0
121 .emtcode TYPE_SPECIFIER_BOOL 1
122 .emtcode TYPE_SPECIFIER_BVEC2 2
123 .emtcode TYPE_SPECIFIER_BVEC3 3
124 .emtcode TYPE_SPECIFIER_BVEC4 4
125 .emtcode TYPE_SPECIFIER_INT 5
126 .emtcode TYPE_SPECIFIER_IVEC2 6
127 .emtcode TYPE_SPECIFIER_IVEC3 7
128 .emtcode TYPE_SPECIFIER_IVEC4 8
129 .emtcode TYPE_SPECIFIER_FLOAT 9
130 .emtcode TYPE_SPECIFIER_VEC2 10
131 .emtcode TYPE_SPECIFIER_VEC3 11
132 .emtcode TYPE_SPECIFIER_VEC4 12
133 .emtcode TYPE_SPECIFIER_MAT2 13
134 .emtcode TYPE_SPECIFIER_MAT3 14
135 .emtcode TYPE_SPECIFIER_MAT4 15
136 .emtcode TYPE_SPECIFIER_SAMPLER1D 16
137 .emtcode TYPE_SPECIFIER_SAMPLER2D 17
138 .emtcode TYPE_SPECIFIER_SAMPLER3D 18
139 .emtcode TYPE_SPECIFIER_SAMPLERCUBE 19
140 .emtcode TYPE_SPECIFIER_SAMPLER1DSHADOW 20
141 .emtcode TYPE_SPECIFIER_SAMPLER2DSHADOW 21
142 .emtcode TYPE_SPECIFIER_SAMPLER2DRECT 22
143 .emtcode TYPE_SPECIFIER_SAMPLER2DRECTSHADOW 23
144 .emtcode TYPE_SPECIFIER_STRUCT 24
145 .emtcode TYPE_SPECIFIER_TYPENAME 25
148 .emtcode TYPE_SPECIFIER_MAT23 26
149 .emtcode TYPE_SPECIFIER_MAT32 27
150 .emtcode TYPE_SPECIFIER_MAT24 28
151 .emtcode TYPE_SPECIFIER_MAT42 29
152 .emtcode TYPE_SPECIFIER_MAT34 30
153 .emtcode TYPE_SPECIFIER_MAT43 31
156 /* structure field */
157 .emtcode FIELD_NONE 0
158 .emtcode FIELD_NEXT 1
159 .emtcode FIELD_ARRAY 2
163 .emtcode OP_BLOCK_BEGIN_NO_NEW_SCOPE 1
164 .emtcode OP_BLOCK_BEGIN_NEW_SCOPE 2
165 .emtcode OP_DECLARE 3
168 .emtcode OP_CONTINUE 6
169 .emtcode OP_DISCARD 7
171 .emtcode OP_EXPRESSION 9
176 .emtcode OP_PUSH_VOID 14
177 .emtcode OP_PUSH_BOOL 15
178 .emtcode OP_PUSH_INT 16
179 .emtcode OP_PUSH_FLOAT 17
180 .emtcode OP_PUSH_IDENTIFIER 18
181 .emtcode OP_SEQUENCE 19
182 .emtcode OP_ASSIGN 20
183 .emtcode OP_ADDASSIGN 21
184 .emtcode OP_SUBASSIGN 22
185 .emtcode OP_MULASSIGN 23
186 .emtcode OP_DIVASSIGN 24
187 /*.emtcode OP_MODASSIGN 25*/
188 /*.emtcode OP_LSHASSIGN 26*/
189 /*.emtcode OP_RSHASSIGN 27*/
190 /*.emtcode OP_ORASSIGN 28*/
191 /*.emtcode OP_XORASSIGN 29*/
192 /*.emtcode OP_ANDASSIGN 30*/
193 .emtcode OP_SELECT 31
194 .emtcode OP_LOGICALOR 32
195 .emtcode OP_LOGICALXOR 33
196 .emtcode OP_LOGICALAND 34
197 /*.emtcode OP_BITOR 35*/
198 /*.emtcode OP_BITXOR 36*/
199 /*.emtcode OP_BITAND 37*/
201 .emtcode OP_NOTEQUAL 39
203 .emtcode OP_GREATER 41
204 .emtcode OP_LESSEQUAL 42
205 .emtcode OP_GREATEREQUAL 43
206 /*.emtcode OP_LSHIFT 44*/
207 /*.emtcode OP_RSHIFT 45*/
209 .emtcode OP_SUBTRACT 47
210 .emtcode OP_MULTIPLY 48
211 .emtcode OP_DIVIDE 49
212 /*.emtcode OP_MODULUS 50*/
213 .emtcode OP_PREINCREMENT 51
214 .emtcode OP_PREDECREMENT 52
217 /*.emtcode OP_COMPLEMENT 55*/
219 .emtcode OP_SUBSCRIPT 57
222 .emtcode OP_POSTINCREMENT 60
223 .emtcode OP_POSTDECREMENT 61
225 /* parameter qualifier */
226 .emtcode PARAM_QUALIFIER_IN 0
227 .emtcode PARAM_QUALIFIER_OUT 1
228 .emtcode PARAM_QUALIFIER_INOUT 2
230 /* function parameter */
231 .emtcode PARAMETER_NONE 0
232 .emtcode PARAMETER_NEXT 1
234 /* function parameter array presence */
235 .emtcode PARAMETER_ARRAY_NOT_PRESENT 0
236 .emtcode PARAMETER_ARRAY_PRESENT 1
238 .errtext INVALID_EXTERNAL_DECLARATION "2001: Invalid external declaration."
239 .errtext INVALID_OPERATOR_OVERRIDE "2002: Invalid operator override."
240 .errtext LBRACE_EXPECTED "2003: '{' expected but '$err_token$' found."
241 .errtext LPAREN_EXPECTED "2004: '(' expected but '$err_token$' found."
242 .errtext RPAREN_EXPECTED "2005: ')' expected but '$err_token$' found."
244 /* tells whether the shader that is being parsed is a built-in shader or not */
245 /* 0 - normal behaviour */
246 /* 1 - accepts constructor and operator definitions and __asm statements */
247 /* the implementation will set it to 1 when compiling internal built-in shaders */
248 .regbyte parsing_builtin 0
250 /* holds the type of the shader being parsed; possible values are listed below */
251 /* FRAGMENT_SHADER 1 */
252 /* VERTEX_SHADER 2 */
253 /* shader type is set by the caller before parsing */
254 .regbyte shader_type 0
257 <variable_identifier> ::= <identifier>
260 identifier .emit OP_PUSH_IDENTIFIER;
263 <primary_expression> ::= <variable_identifier>
267 | "(" <expression> ")"
270 floatconstant .or boolconstant .or intconstant .or variable_identifier .or primary_expression_1;
272 lparen .and expression .and rparen;
275 <postfix_expression> ::= <primary_expression>
276 | <postfix_expression> "[" <integer_expression> "]"
278 | <postfix_expression> "." <field_selection>
279 | <postfix_expression> "++"
280 | <postfix_expression> "--"
283 postfix_expression_1 .and .loop postfix_expression_2;
285 function_call .or primary_expression;
287 postfix_expression_3 .or postfix_expression_4 .or
288 plusplus .emit OP_POSTINCREMENT .or
289 minusminus .emit OP_POSTDECREMENT;
291 lbracket .and integer_expression .and rbracket .emit OP_SUBSCRIPT;
293 dot .and field_selection .emit OP_FIELD;
296 <integer_expression> ::= <expression>
302 <function_call> ::= <function_call_generic>
305 function_call_generic .emit OP_CALL .and .true .emit OP_END;
308 <function_call_generic> ::= <function_call_header_with_parameters> ")"
309 | <function_call_header_no_parameters> ")"
311 function_call_generic
312 function_call_generic_1 .or function_call_generic_2;
313 function_call_generic_1
314 function_call_header_with_parameters .and rparen .error RPAREN_EXPECTED;
315 function_call_generic_2
316 function_call_header_no_parameters .and rparen .error RPAREN_EXPECTED;
319 <function_call_header_no_parameters>::= <function_call_header> "void"
320 | <function_call_header>
322 function_call_header_no_parameters
323 function_call_header .and function_call_header_no_parameters_1;
324 function_call_header_no_parameters_1
328 <function_call_header_with_parameters>::= <function_call_header> <assignment_expression>
329 | <function_call_header_with_parameters> ","
330 <assignment_expression>
332 function_call_header_with_parameters
333 function_call_header .and assignment_expression .and .true .emit OP_END .and
334 .loop function_call_header_with_parameters_1;
335 function_call_header_with_parameters_1
336 comma .and assignment_expression .and .true .emit OP_END;
339 <function_call_header> ::= <function_identifier> "("
342 function_identifier .and lparen;
345 <function_identifier> ::= <constructor_identifier>
348 note: <constructor_identifier> has been deleted
354 <unary_expression> ::= <postfix_expression>
355 | "++" <unary_expression>
356 | "--" <unary_expression>
357 | <unary_operator> <unary_expression>
359 <unary_operator> ::= "+"
365 postfix_expression .or unary_expression_1 .or unary_expression_2 .or unary_expression_3 .or
366 unary_expression_4 .or unary_expression_5/* .or unary_expression_6*/;
368 plusplus .and unary_expression .and .true .emit OP_PREINCREMENT;
370 minusminus .and unary_expression .and .true .emit OP_PREDECREMENT;
372 plus .and unary_expression .and .true .emit OP_PLUS;
374 minus .and unary_expression .and .true .emit OP_MINUS;
376 bang .and unary_expression .and .true .emit OP_NOT;
378 tilde .and unary_expression .and .true .emit OP_COMPLEMENT;*/
381 <multiplicative_expression> ::= <unary_expression>
382 | <multiplicative_expression> "*" <unary_expression>
383 | <multiplicative_expression> "/" <unary_expression>
384 | <multiplicative_expression> "%" <unary_expression> // reserved
386 multiplicative_expression
387 unary_expression .and .loop multiplicative_expression_1;
388 multiplicative_expression_1
389 multiplicative_expression_2 .or multiplicative_expression_3/* .or multiplicative_expression_4*/;
390 multiplicative_expression_2
391 star .and unary_expression .and .true .emit OP_MULTIPLY;
392 multiplicative_expression_3
393 slash .and unary_expression .and .true .emit OP_DIVIDE;
394 /*multiplicative_expression_4
395 percent .and unary_expression .and .true .emit OP_MODULUS;*/
398 <additive_expression> ::= <multiplicative_expression>
399 | <additive_expression> "+" <multiplicative_expression>
400 | <additive_expression> "-" <multiplicative_expression>
403 multiplicative_expression .and .loop additive_expression_1;
404 additive_expression_1
405 additive_expression_2 .or additive_expression_3;
406 additive_expression_2
407 plus .and multiplicative_expression .and .true .emit OP_ADD;
408 additive_expression_3
409 minus .and multiplicative_expression .and .true .emit OP_SUBTRACT;
412 <shift_expression> ::= <additive_expression>
413 | <shift_expression> "<<" <additive_expression> // reserved
414 | <shift_expression> ">>" <additive_expression> // reserved
417 additive_expression/* .and .loop shift_expression_1*/;
419 shift_expression_2 .or shift_expression_3;*/
421 lessless .and additive_expression .and .true .emit OP_LSHIFT;*/
423 greatergreater .and additive_expression .and .true .emit OP_RSHIFT;*/
426 <relational_expression> ::= <shift_expression>
427 | <relational_expression> "<" <shift_expression>
428 | <relational_expression> ">" <shift_expression>
429 | <relational_expression> "<=" <shift_expression>
430 | <relational_expression> ">=" <shift_expression>
432 relational_expression
433 shift_expression .and .loop relational_expression_1;
434 relational_expression_1
435 relational_expression_2 .or relational_expression_3 .or relational_expression_4 .or
436 relational_expression_5;
437 relational_expression_2
438 lessequals .and shift_expression .and .true .emit OP_LESSEQUAL;
439 relational_expression_3
440 greaterequals .and shift_expression .and .true .emit OP_GREATEREQUAL;
441 relational_expression_4
442 less .and shift_expression .and .true .emit OP_LESS;
443 relational_expression_5
444 greater .and shift_expression .and .true .emit OP_GREATER;
447 <equality_expression> ::= <relational_expression>
448 | <equality_expression> "==" <relational_expression>
449 | <equality_expression> "!=" <relational_expression>
452 relational_expression .and .loop equality_expression_1;
453 equality_expression_1
454 equality_expression_2 .or equality_expression_3;
455 equality_expression_2
456 equalsequals .and relational_expression .and .true .emit OP_EQUAL;
457 equality_expression_3
458 bangequals .and relational_expression .and .true .emit OP_NOTEQUAL;
461 <and_expression> ::= <equality_expression>
462 | <and_expression> "&" <equality_expression> // reserved
465 equality_expression/* .and .loop and_expression_1*/;
467 ampersand .and equality_expression .and .true .emit OP_BITAND;*/
470 <exclusive_or_expression> ::= <and_expression>
471 | <exclusive_or_expression> "^" <and_expression> // reserved
473 exclusive_or_expression
474 and_expression/* .and .loop exclusive_or_expression_1*/;
475 /*exclusive_or_expression_1
476 caret .and and_expression .and .true .emit OP_BITXOR;*/
479 <inclusive_or_expression> ::= <exclusive_or_expression>
480 | <inclusive_or_expression> "|" <exclusive_or_expression> // reserved
482 inclusive_or_expression
483 exclusive_or_expression/* .and .loop inclusive_or_expression_1*/;
484 /*inclusive_or_expression_1
485 bar .and exclusive_or_expression .and .true .emit OP_BITOR;*/
488 <logical_and_expression> ::= <inclusive_or_expression>
489 | <logical_and_expression> "&&" <inclusive_or_expression>
491 logical_and_expression
492 inclusive_or_expression .and .loop logical_and_expression_1;
493 logical_and_expression_1
494 ampersandampersand .and inclusive_or_expression .and .true .emit OP_LOGICALAND;
497 <logical_xor_expression> ::= <logical_and_expression>
498 | <logical_xor_expression> "^^" <logical_and_expression>
500 logical_xor_expression
501 logical_and_expression .and .loop logical_xor_expression_1;
502 logical_xor_expression_1
503 caretcaret .and logical_and_expression .and .true .emit OP_LOGICALXOR;
506 <logical_or_expression> ::= <logical_xor_expression>
507 | <logical_or_expression> "||" <logical_xor_expression>
509 logical_or_expression
510 logical_xor_expression .and .loop logical_or_expression_1;
511 logical_or_expression_1
512 barbar .and logical_xor_expression .and .true .emit OP_LOGICALOR;
515 <conditional_expression> ::= <logical_or_expression>
516 | <logical_or_expression> "?" <expression> ":"
517 <conditional_expression>
519 conditional_expression
520 logical_or_expression .and .loop conditional_expression_1;
521 conditional_expression_1
522 question .and expression .and colon .and conditional_expression .and .true .emit OP_SELECT;
525 <assignment_expression> ::= <conditional_expression>
526 | <unary_expression> <assignment_operator>
527 <assignment_expression>
529 <assignment_operator> ::= "="
541 assignment_expression
542 assignment_expression_1 .or assignment_expression_2 .or assignment_expression_3 .or
543 assignment_expression_4 .or assignment_expression_5/* .or assignment_expression_6 .or
544 assignment_expression_7 .or assignment_expression_8 .or assignment_expression_9 .or
545 assignment_expression_10 .or assignment_expression_11*/ .or conditional_expression;
546 assignment_expression_1
547 unary_expression .and equals .and assignment_expression .and .true .emit OP_ASSIGN;
548 assignment_expression_2
549 unary_expression .and starequals .and assignment_expression .and .true .emit OP_MULASSIGN;
550 assignment_expression_3
551 unary_expression .and slashequals .and assignment_expression .and .true .emit OP_DIVASSIGN;
552 assignment_expression_4
553 unary_expression .and plusequals .and assignment_expression .and .true .emit OP_ADDASSIGN;
554 assignment_expression_5
555 unary_expression .and minusequals .and assignment_expression .and .true .emit OP_SUBASSIGN;
556 /*assignment_expression_6
557 unary_expression .and percentequals .and assignment_expression .and .true .emit OP_MODASSIGN;*/
558 /*assignment_expression_7
559 unary_expression .and lesslessequals .and assignment_expression .and .true .emit OP_LSHASSIGN;*/
560 /*assignment_expression_8
561 unary_expression .and greatergreaterequals .and assignment_expression .and
562 .true .emit OP_RSHASSIGN;*/
563 /*assignment_expression_9
564 unary_expression .and ampersandequals .and assignment_expression .and .true .emit OP_ANDASSIGN;*/
565 /*assignment_expression_10
566 unary_expression .and caretequals .and assignment_expression .and .true .emit OP_XORASSIGN;*/
567 /*assignment_expression_11
568 unary_expression .and barequals .and assignment_expression .and .true .emit OP_ORASSIGN;*/
571 <expression> ::= <assignment_expression>
572 | <expression> "," <assignment_expression>
575 assignment_expression .and .loop expression_1;
577 comma .and assignment_expression .and .true .emit OP_SEQUENCE;
580 <constant_expression> ::= <conditional_expression>
583 conditional_expression .and .true .emit OP_END;
586 <declaration> ::= <function_prototype> ";"
587 | <init_declarator_list> ";"
590 declaration_1 .or declaration_2;
592 function_prototype .emit DECLARATION_FUNCTION_PROTOTYPE .and semicolon;
594 init_declarator_list .emit DECLARATION_INIT_DECLARATOR_LIST .and semicolon;
597 <function_prototype> ::= <function_header> "void" ")"
598 | <function_declarator> ")"
601 function_prototype_1 .or function_prototype_2;
603 function_header .and "void" .and rparen .error RPAREN_EXPECTED .emit PARAMETER_NONE;
605 function_declarator .and rparen .error RPAREN_EXPECTED .emit PARAMETER_NONE;
608 <function_declarator> ::= <function_header>
609 | <function_header_with_parameters>
612 function_header_with_parameters .or function_header;
615 <function_header_with_parameters> ::= <function_header> <parameter_declaration>
616 | <function_header_with_parameters> ","
617 <parameter_declaration>
619 function_header_with_parameters
620 function_header .and parameter_declaration .and .loop function_header_with_parameters_1;
621 function_header_with_parameters_1
622 comma .and parameter_declaration;
625 <function_header> ::= <fully_specified_type> <identifier> "("
628 function_header_nospace .or function_header_space;
629 function_header_space
630 fully_specified_type_space .and space .and function_decl_identifier .and lparen;
631 function_header_nospace
632 fully_specified_type_nospace .and function_decl_identifier .and lparen;
635 <function_decl_identifier> ::= "__constructor"
639 note: this is an extension to the standard language specification - normally slang disallows
640 operator and constructor prototypes and definitions
642 function_decl_identifier
643 .if (parsing_builtin != 0) __operator .emit FUNCTION_OPERATOR .or
644 .if (parsing_builtin != 0) "__constructor" .emit FUNCTION_CONSTRUCTOR .or
645 identifier .emit FUNCTION_ORDINARY;
648 <__operator> ::= "__operator" <overriden_op>
650 note: this is an extension to the standard language specification - normally slang disallows
651 operator prototypes and definitions
654 "__operator" .and overriden_operator .error INVALID_OPERATOR_OVERRIDE;
657 <overriden_op> ::= "="
690 note: this is an extension to the standard language specification - normally slang disallows
691 operator prototypes and definitions
694 plusplus .emit OPERATOR_INCREMENT .or
695 plusequals .emit OPERATOR_ADDASSIGN .or
696 plus .emit OPERATOR_PLUS .or
697 minusminus .emit OPERATOR_DECREMENT .or
698 minusequals .emit OPERATOR_SUBASSIGN .or
699 minus .emit OPERATOR_MINUS .or
700 bang .emit OPERATOR_NOT .or
701 starequals .emit OPERATOR_MULASSIGN .or
702 star .emit OPERATOR_MULTIPLY .or
703 slashequals .emit OPERATOR_DIVASSIGN .or
704 slash .emit OPERATOR_DIVIDE .or
705 lessequals .emit OPERATOR_LESSEQUAL .or
706 /*lesslessequals .emit OPERATOR_LSHASSIGN .or*/
707 /*lessless .emit OPERATOR_LSHIFT .or*/
708 less .emit OPERATOR_LESS .or
709 greaterequals .emit OPERATOR_GREATEREQUAL .or
710 /*greatergreaterequals .emit OPERATOR_RSHASSIGN .or*/
711 /*greatergreater .emit OPERATOR_RSHIFT .or*/
712 greater .emit OPERATOR_GREATER .or
713 /*percentequals .emit OPERATOR_MODASSIGN .or*/
714 /*percent .emit OPERATOR_MODULUS .or*/
715 /*ampersandequals .emit OPERATOR_ANDASSIGN */
716 /*ampersand .emit OPERATOR_BITAND .or*/
717 /*barequals .emit OPERATOR_ORASSIGN .or*/
718 /*bar .emit OPERATOR_BITOR .or*/
719 /*tilde .emit OPERATOR_COMPLEMENT .or*/
720 /*caretequals .emit OPERATOR_XORASSIGN .or*/
721 caretcaret .emit OPERATOR_LOGICALXOR /*.or
722 caret .emit OPERATOR_BITXOR*/;
725 <parameter_declarator> ::= <type_specifier> <identifier>
726 | <type_specifier> <identifier> "[" <constant_expression>
730 parameter_declarator_nospace .or parameter_declarator_space;
731 parameter_declarator_nospace
732 type_specifier_nospace .and identifier .and parameter_declarator_1;
733 parameter_declarator_space
734 type_specifier_space .and space .and identifier .and parameter_declarator_1;
735 parameter_declarator_1
736 parameter_declarator_2 .emit PARAMETER_ARRAY_PRESENT .or
737 .true .emit PARAMETER_ARRAY_NOT_PRESENT;
738 parameter_declarator_2
739 lbracket .and constant_expression .and rbracket;
742 <parameter_declaration> ::= <type_qualifier> <parameter_qualifier>
743 <parameter_declarator>
744 | <type_qualifier> <parameter_qualifier>
745 <parameter_type_specifier>
746 | <parameter_qualifier> <parameter_declarator>
747 | <parameter_qualifier> <parameter_type_specifier>
749 parameter_declaration
750 parameter_declaration_1 .emit PARAMETER_NEXT;
751 parameter_declaration_1
752 parameter_declaration_2 .or parameter_declaration_3;
753 parameter_declaration_2
754 type_qualifier .and space .and parameter_qualifier .and parameter_declaration_4;
755 parameter_declaration_3
756 parameter_qualifier .emit TYPE_QUALIFIER_NONE .and parameter_declaration_4;
757 parameter_declaration_4
758 parameter_declarator .or parameter_type_specifier;
761 <parameter_qualifier> ::= "in"
767 parameter_qualifier_1 .or .true .emit PARAM_QUALIFIER_IN;
768 parameter_qualifier_1
769 parameter_qualifier_2 .and space;
770 parameter_qualifier_2
771 "in" .emit PARAM_QUALIFIER_IN .or
772 "out" .emit PARAM_QUALIFIER_OUT .or
773 "inout" .emit PARAM_QUALIFIER_INOUT;
776 <parameter_type_specifier> ::= <type_specifier>
777 | <type_specifier> "[" <constant_expression> "]"
779 parameter_type_specifier
780 parameter_type_specifier_1 .and .true .emit '\0' .and parameter_type_specifier_2;
781 parameter_type_specifier_1
782 type_specifier_nospace .or type_specifier_space;
783 parameter_type_specifier_2
784 parameter_type_specifier_3 .emit PARAMETER_ARRAY_PRESENT .or
785 .true .emit PARAMETER_ARRAY_NOT_PRESENT;
786 parameter_type_specifier_3
787 lbracket .and constant_expression .and rbracket;
790 <init_declarator_list> ::= <single_declaration>
791 | <init_declarator_list> "," <identifier>
792 | <init_declarator_list> "," <identifier> "[" "]"
793 | <init_declarator_list> "," <identifier> "["
794 <constant_expression> "]"
795 | <init_declarator_list> "," <identifier> "="
799 single_declaration .and .loop init_declarator_list_1 .emit DECLARATOR_NEXT .and
800 .true .emit DECLARATOR_NONE;
801 init_declarator_list_1
802 comma .and identifier .emit VARIABLE_IDENTIFIER .and init_declarator_list_2;
803 init_declarator_list_2
804 init_declarator_list_3 .or init_declarator_list_4 .or .true .emit VARIABLE_NONE;
805 init_declarator_list_3
806 equals .and initializer .emit VARIABLE_INITIALIZER;
807 init_declarator_list_4
808 lbracket .and init_declarator_list_5 .and rbracket;
809 init_declarator_list_5
810 constant_expression .emit VARIABLE_ARRAY_EXPLICIT .or .true .emit VARIABLE_ARRAY_UNKNOWN;
813 <single_declaration> ::= <fully_specified_type>
814 | <fully_specified_type> <identifier>
815 | <fully_specified_type> <identifier> "[" "]"
816 | <fully_specified_type> <identifier> "["
817 <constant_expression> "]"
818 | <fully_specified_type> <identifier> "=" <initializer>
821 single_declaration_nospace .or single_declaration_space;
822 single_declaration_space
823 fully_specified_type_space .and single_declaration_space_1;
824 single_declaration_nospace
825 fully_specified_type_nospace .and single_declaration_nospace_1;
826 single_declaration_space_1
827 single_declaration_space_2 .emit VARIABLE_IDENTIFIER .or .true .emit VARIABLE_NONE;
828 single_declaration_nospace_1
829 single_declaration_nospace_2 .emit VARIABLE_IDENTIFIER .or .true .emit VARIABLE_NONE;
830 single_declaration_space_2
831 space .and identifier .and single_declaration_3;
832 single_declaration_nospace_2
833 identifier .and single_declaration_3;
835 single_declaration_4 .or single_declaration_5 .or .true .emit VARIABLE_NONE;
837 equals .and initializer .emit VARIABLE_INITIALIZER;
839 lbracket .and single_declaration_6 .and rbracket;
841 constant_expression .emit VARIABLE_ARRAY_EXPLICIT .or .true .emit VARIABLE_ARRAY_UNKNOWN;
844 <fully_specified_type> ::= <type_specifier>
845 | <type_qualifier> <type_specifier>
847 fully_specified_type_space
848 fully_specified_type_1 .and type_specifier_space;
849 fully_specified_type_nospace
850 fully_specified_type_1 .and type_specifier_nospace;
851 fully_specified_type_1
852 fully_specified_type_2 .or .true .emit TYPE_QUALIFIER_NONE;
853 fully_specified_type_2
854 type_qualifier .and space;
857 <type_qualifier> ::= "const"
858 | "attribute" // Vertex only.
864 note: this is an extension to the standard language specification - normally slang disallows
865 __fixed_output and __fixed_input type qualifiers
868 "const" .emit TYPE_QUALIFIER_CONST .or
869 .if (shader_type == 2) "attribute" .emit TYPE_QUALIFIER_ATTRIBUTE .or
870 "varying" .emit TYPE_QUALIFIER_VARYING .or
871 "uniform" .emit TYPE_QUALIFIER_UNIFORM .or
872 .if (parsing_builtin != 0) "__fixed_output" .emit TYPE_QUALIFIER_FIXEDOUTPUT .or
873 .if (parsing_builtin != 0) "__fixed_input" .emit TYPE_QUALIFIER_FIXEDINPUT;
876 <type_specifier> ::= "void"
905 | "sampler2DRectShadow"
910 "void" .emit TYPE_SPECIFIER_VOID .or
911 "float" .emit TYPE_SPECIFIER_FLOAT .or
912 "int" .emit TYPE_SPECIFIER_INT .or
913 "bool" .emit TYPE_SPECIFIER_BOOL .or
914 "vec2" .emit TYPE_SPECIFIER_VEC2 .or
915 "vec3" .emit TYPE_SPECIFIER_VEC3 .or
916 "vec4" .emit TYPE_SPECIFIER_VEC4 .or
917 "bvec2" .emit TYPE_SPECIFIER_BVEC2 .or
918 "bvec3" .emit TYPE_SPECIFIER_BVEC3 .or
919 "bvec4" .emit TYPE_SPECIFIER_BVEC4 .or
920 "ivec2" .emit TYPE_SPECIFIER_IVEC2 .or
921 "ivec3" .emit TYPE_SPECIFIER_IVEC3 .or
922 "ivec4" .emit TYPE_SPECIFIER_IVEC4 .or
923 "mat2" .emit TYPE_SPECIFIER_MAT2 .or
924 "mat3" .emit TYPE_SPECIFIER_MAT3 .or
925 "mat4" .emit TYPE_SPECIFIER_MAT4 .or
926 "mat2x3" .emit TYPE_SPECIFIER_MAT23 .or
927 "mat3x2" .emit TYPE_SPECIFIER_MAT32 .or
928 "mat2x4" .emit TYPE_SPECIFIER_MAT24 .or
929 "mat4x2" .emit TYPE_SPECIFIER_MAT42 .or
930 "mat3x4" .emit TYPE_SPECIFIER_MAT34 .or
931 "mat4x3" .emit TYPE_SPECIFIER_MAT43 .or
932 "sampler1D" .emit TYPE_SPECIFIER_SAMPLER1D .or
933 "sampler2D" .emit TYPE_SPECIFIER_SAMPLER2D .or
934 "sampler3D" .emit TYPE_SPECIFIER_SAMPLER3D .or
935 "samplerCube" .emit TYPE_SPECIFIER_SAMPLERCUBE .or
936 "sampler1DShadow" .emit TYPE_SPECIFIER_SAMPLER1DSHADOW .or
937 "sampler2DShadow" .emit TYPE_SPECIFIER_SAMPLER2DSHADOW .or
938 "sampler2DRect" .emit TYPE_SPECIFIER_SAMPLER2DRECT .or
939 "sampler2DRectShadow" .emit TYPE_SPECIFIER_SAMPLER2DRECTSHADOW .or
940 type_name .emit TYPE_SPECIFIER_TYPENAME;
941 type_specifier_nospace
942 struct_specifier .emit TYPE_SPECIFIER_STRUCT;
945 <struct_specifier> ::= "struct" <identifier> "{" <struct_declaration_list> "}"
946 | "struct" "{" <struct_declaration_list> "}"
949 "struct" .and struct_specifier_1 .and optional_space .and lbrace .error LBRACE_EXPECTED .and
950 struct_declaration_list .and rbrace .emit FIELD_NONE;
952 struct_specifier_2 .or .true .emit '\0';
954 space .and identifier;
957 <struct_declaration_list> ::= <struct_declaration>
958 | <struct_declaration_list> <struct_declaration>
960 struct_declaration_list
961 struct_declaration .and .loop struct_declaration .emit FIELD_NEXT;
964 <struct_declaration> ::= <type_specifier> <struct_declarator_list> ";"
967 struct_declaration_nospace .or struct_declaration_space;
968 struct_declaration_space
969 type_specifier_space .and space .and struct_declarator_list .and semicolon .emit FIELD_NONE;
970 struct_declaration_nospace
971 type_specifier_nospace .and struct_declarator_list .and semicolon .emit FIELD_NONE;
974 <struct_declarator_list> ::= <struct_declarator>
975 | <struct_declarator_list> "," <struct_declarator>
977 struct_declarator_list
978 struct_declarator .and .loop struct_declarator_list_1 .emit FIELD_NEXT;
979 struct_declarator_list_1
980 comma .and struct_declarator;
983 <struct_declarator> ::= <identifier>
984 | <identifier> "[" <constant_expression> "]"
987 identifier .and struct_declarator_1;
989 struct_declarator_2 .emit FIELD_ARRAY .or .true .emit FIELD_NONE;
991 lbracket .and constant_expression .and rbracket;
994 <initializer> ::= <assignment_expression>
997 assignment_expression .and .true .emit OP_END;
1000 <declaration_statement> ::= <declaration>
1002 declaration_statement
1006 <statement> ::= <compound_statement>
1007 | <simple_statement>
1010 compound_statement .or simple_statement;
1012 compound_statement .or statement_space_1;
1014 space .and simple_statement;
1017 <simple_statement> ::= <__asm_statement>
1018 | <selection_statement>
1019 | <iteration_statement>
1021 | <expression_statement>
1022 | <declaration_statement>
1024 note: this is an extension to the standard language specification - normally slang disallows
1025 use of __asm statements
1028 .if (parsing_builtin != 0) __asm_statement .emit OP_ASM .or
1029 selection_statement .or
1030 iteration_statement .or
1032 expression_statement .emit OP_EXPRESSION .or
1033 declaration_statement .emit OP_DECLARE;
1036 <compound_statement> ::= "{" "}"
1037 | "{" <statement_list> "}"
1040 compound_statement_1 .emit OP_BLOCK_BEGIN_NEW_SCOPE .and .true .emit OP_END;
1041 compound_statement_1
1042 compound_statement_2 .or compound_statement_3;
1043 compound_statement_2
1045 compound_statement_3
1046 lbrace .and statement_list .and rbrace;
1049 <statement_no_new_scope> ::= <compound_statement_no_new_scope>
1050 | <simple_statement>
1052 statement_no_new_scope
1053 compound_statement_no_new_scope .or simple_statement;
1056 <compound_statement_no_new_scope> ::= "{" "}"
1057 | "{" <statement_list> "}"
1059 compound_statement_no_new_scope
1060 compound_statement_no_new_scope_1 .emit OP_BLOCK_BEGIN_NO_NEW_SCOPE .and .true .emit OP_END;
1061 compound_statement_no_new_scope_1
1062 compound_statement_no_new_scope_2 .or compound_statement_no_new_scope_3;
1063 compound_statement_no_new_scope_2
1065 compound_statement_no_new_scope_3
1066 lbrace .and statement_list .and rbrace;
1069 <statement_list> ::= <statement>
1070 | <statement_list> <statement>
1073 statement .and .loop statement;
1076 <expression_statement> ::= ";"
1079 expression_statement
1080 expression_statement_1 .or expression_statement_2;
1081 expression_statement_1
1082 semicolon .emit OP_PUSH_VOID .emit OP_END;
1083 expression_statement_2
1084 expression .and semicolon .emit OP_END;
1087 <selection_statement> ::= "if" "(" <expression> ")" <selection_rest_statement>
1090 "if" .emit OP_IF .and lparen .error LPAREN_EXPECTED .and expression .and
1091 rparen .error RPAREN_EXPECTED .emit OP_END .and selection_rest_statement;
1094 <selection_rest_statement> ::= <statement> "else" <statement>
1097 selection_rest_statement
1098 statement .and selection_rest_statement_1;
1099 selection_rest_statement_1
1100 selection_rest_statement_2 .or .true .emit OP_EXPRESSION .emit OP_PUSH_VOID .emit OP_END;
1101 selection_rest_statement_2
1102 "else" .and optional_space .and statement;
1105 <condition> ::= <expression>
1106 | <fully_specified_type> <identifier> "=" <initializer>
1108 note: if <condition_1> is executed, the emit format must match <declaration> emit format
1111 condition_1 .emit OP_DECLARE .emit DECLARATION_INIT_DECLARATOR_LIST .or
1112 condition_3 .emit OP_EXPRESSION;
1114 condition_1_nospace .or condition_1_space;
1116 fully_specified_type_nospace .and condition_2;
1118 fully_specified_type_space .and space .and condition_2;
1120 identifier .emit VARIABLE_IDENTIFIER .and equals .emit VARIABLE_INITIALIZER .and
1121 initializer .and .true .emit DECLARATOR_NONE;
1123 expression .and .true .emit OP_END;
1126 <iteration_statement> ::= "while" "(" <condition> ")" <statement>
1127 | "do" <statement> "while" "(" <expression> ")" ";"
1128 | "for" "(" <for_init_statement> <for_rest_statement> ")"
1129 <statement_no_new_scope>
1132 iteration_statement_1 .or iteration_statement_2 .or iteration_statement_3;
1133 iteration_statement_1
1134 "while" .emit OP_WHILE .and lparen .error LPAREN_EXPECTED .and condition .and
1135 rparen .error RPAREN_EXPECTED .and statement;
1136 iteration_statement_2
1137 "do" .emit OP_DO .and statement_space .and "while" .and lparen .error LPAREN_EXPECTED .and
1138 expression .and rparen .error RPAREN_EXPECTED .emit OP_END .and semicolon;
1139 iteration_statement_3
1140 "for" .emit OP_FOR .and lparen .error LPAREN_EXPECTED .and for_init_statement .and
1141 for_rest_statement .and rparen .error RPAREN_EXPECTED .and statement_no_new_scope;
1144 <for_init_statement> ::= <expression_statement>
1145 | <declaration_statement>
1148 expression_statement .emit OP_EXPRESSION .or declaration_statement .emit OP_DECLARE;
1151 <conditionopt> ::= <condition>
1154 note: <conditionopt> is used only by "for" statement - if <condition> is ommitted, parser
1155 simulates default behaviour, that is simulates "true" expression
1159 .true .emit OP_EXPRESSION .emit OP_PUSH_BOOL .emit 2 .emit '1' .emit '\0' .emit OP_END;
1162 <for_rest_statement> ::= <conditionopt> ";"
1163 | <conditionopt> ";" <expression>
1166 conditionopt .and semicolon .and for_rest_statement_1;
1167 for_rest_statement_1
1168 for_rest_statement_2 .or .true .emit OP_PUSH_VOID .emit OP_END;
1169 for_rest_statement_2
1170 expression .and .true .emit OP_END;
1173 <jump_statement> ::= "continue" ";"
1176 | "return" <expression> ";"
1177 | "discard" ";" // Fragment shader only.
1180 jump_statement_1 .or jump_statement_2 .or jump_statement_3 .or jump_statement_4 .or
1181 .if (shader_type == 1) jump_statement_5;
1183 "continue" .and semicolon .emit OP_CONTINUE;
1185 "break" .and semicolon .emit OP_BREAK;
1187 "return" .emit OP_RETURN .and optional_space .and expression .and semicolon .emit OP_END;
1189 "return" .emit OP_RETURN .and semicolon .emit OP_PUSH_VOID .emit OP_END;
1191 "discard" .and semicolon .emit OP_DISCARD;
1194 <__asm_statement> ::= "__asm" <identifier> <asm_arguments> ";"
1196 note: this is an extension to the standard language specification - normally slang disallows
1200 "__asm" .and space .and identifier .and space .and asm_arguments .and semicolon .emit OP_END;
1203 <asm_arguments> ::= <asm_argument>
1204 | <asm_arguments> "," <asm_argument>
1206 note: this is an extension to the standard language specification - normally slang disallows
1210 asm_argument .and .true .emit OP_END .and .loop asm_arguments_1;
1212 comma .and asm_argument .and .true .emit OP_END;
1215 <asm_argument> ::= <variable_identifier>
1218 note: this is an extension to the standard language specification - normally slang disallows
1223 variable_identifier .or
1227 variable_identifier .and dot .and field_selection .emit OP_FIELD;
1230 <translation_unit> ::= <external_declaration>
1231 | <translation_unit> <external_declaration>
1234 optional_space .emit REVISION .and external_declaration .error INVALID_EXTERNAL_DECLARATION .and
1235 .loop external_declaration .and optional_space .and
1236 '\0' .error INVALID_EXTERNAL_DECLARATION .emit EXTERNAL_NULL;
1239 <external_declaration> ::= <function_definition>
1242 external_declaration
1243 function_definition .emit EXTERNAL_FUNCTION_DEFINITION .or
1244 declaration .emit EXTERNAL_DECLARATION;
1247 <function_definition> :: <function_prototype> <compound_statement_no_new_scope>
1250 function_prototype .and compound_statement_no_new_scope;
1252 /* helper rulez, not part of the official language syntax */
1261 '0'-'9' .or 'A'-'F' .or 'a'-'f';
1264 'a'-'z' .or 'A'-'Z' .or '_';
1267 id_character_first .or digit_dec;
1270 id_character_first .emit * .and .loop id_character_next .emit * .and .true .emit '\0';
1273 float_1 .or float_2;
1275 float_fractional_constant .and float_optional_exponent_part;
1277 float_digit_sequence .and .true .emit '\0' .and float_exponent_part;
1279 float_fractional_constant
1280 float_fractional_constant_1 .or float_fractional_constant_2 .or float_fractional_constant_3;
1281 float_fractional_constant_1
1282 float_digit_sequence .and '.' .and float_digit_sequence;
1283 float_fractional_constant_2
1284 float_digit_sequence .and '.' .and .true .emit '\0';
1285 float_fractional_constant_3
1286 '.' .emit '\0' .and float_digit_sequence;
1288 float_optional_exponent_part
1289 float_exponent_part .or .true .emit '\0';
1291 float_digit_sequence
1292 digit_dec .emit * .and .loop digit_dec .emit * .and .true .emit '\0';
1295 float_exponent_part_1 .or float_exponent_part_2;
1296 float_exponent_part_1
1297 'e' .and float_optional_sign .and float_digit_sequence;
1298 float_exponent_part_2
1299 'E' .and float_optional_sign .and float_digit_sequence;
1302 float_sign .or .true;
1305 '+' .or '-' .emit '-';
1308 integer_hex .or integer_oct .or integer_dec;
1311 '0' .and integer_hex_1 .emit 0x10 .and digit_hex .emit * .and .loop digit_hex .emit * .and
1317 '0' .emit 8 .emit * .and .loop digit_oct .emit * .and .true .emit '\0';
1320 digit_dec .emit 10 .emit * .and .loop digit_dec .emit * .and .true .emit '\0';
1323 "true" .emit 2 .emit '1' .emit '\0' .or
1324 "false" .emit 2 .emit '0' .emit '\0';
1333 float .emit OP_PUSH_FLOAT;
1336 integer .emit OP_PUSH_INT;
1339 boolean .emit OP_PUSH_BOOL;
1345 single_space .and .loop single_space;
1348 white_char .or c_style_comment_block .or cpp_style_comment_block;
1351 ' ' .or '\t' .or new_line .or '\v' .or '\f';
1354 cr_lf .or lf_cr .or '\n' .or '\r';
1362 c_style_comment_block
1363 '/' .and '*' .and c_style_comment_rest;
1365 c_style_comment_rest
1366 .loop c_style_comment_char_no_star .and c_style_comment_rest_1;
1367 c_style_comment_rest_1
1368 c_style_comment_end .or c_style_comment_rest_2;
1369 c_style_comment_rest_2
1370 '*' .and c_style_comment_rest;
1372 c_style_comment_char_no_star
1373 '\x2B'-'\xFF' .or '\x01'-'\x29';
1378 cpp_style_comment_block
1379 '/' .and '/' .and cpp_style_comment_block_1;
1380 cpp_style_comment_block_1
1381 cpp_style_comment_block_2 .or cpp_style_comment_block_3;
1382 cpp_style_comment_block_2
1383 .loop cpp_style_comment_char .and new_line;
1384 cpp_style_comment_block_3
1385 .loop cpp_style_comment_char;
1387 cpp_style_comment_char
1388 '\x0E'-'\xFF' .or '\x01'-'\x09' .or '\x0B'-'\x0C';
1393 optional_space .and '&' .and optional_space;*/
1396 optional_space .and '&' .and '&' .and optional_space;
1399 optional_space .and '&' .and '=' .and optional_space;*/
1402 optional_space .and '|' .and optional_space;*/
1405 optional_space .and '|' .and '|' .and optional_space;
1408 optional_space .and '|' .and '=' .and optional_space;*/
1411 optional_space .and '!' .and optional_space;
1414 optional_space .and '!' .and '=' .and optional_space;
1417 optional_space .and '^' .and optional_space;*/
1420 optional_space .and '^' .and '^' .and optional_space;
1423 optional_space .and '^' .and '=' .and optional_space;*/
1426 optional_space .and ':' .and optional_space;
1429 optional_space .and ',' .and optional_space;
1432 optional_space .and '.' .and optional_space;
1435 optional_space .and '=' .and optional_space;
1438 optional_space .and '=' .and '=' .and optional_space;
1441 optional_space .and '>' .and optional_space;
1444 optional_space .and '>' .and '=' .and optional_space;
1447 optional_space .and '>' .and '>' .and optional_space;*/
1449 /*greatergreaterequals
1450 optional_space .and '>' .and '>' .and '=' .and optional_space;*/
1453 optional_space .and '{' .and optional_space;
1456 optional_space .and '[' .and optional_space;
1459 optional_space .and '<' .and optional_space;
1462 optional_space .and '<' .and '=' .and optional_space;
1465 optional_space .and '<' .and '<' .and optional_space;*/
1468 optional_space .and '<' .and '<' .and '=' .and optional_space;*/
1471 optional_space .and '(' .and optional_space;
1474 optional_space .and '-' .and optional_space;
1477 optional_space .and '-' .and '=' .and optional_space;
1480 optional_space .and '-' .and '-' .and optional_space;
1483 optional_space .and '%' .and optional_space;*/
1486 optional_space .and '%' .and '=' .and optional_space;*/
1489 optional_space .and '+' .and optional_space;
1492 optional_space .and '+' .and '=' .and optional_space;
1495 optional_space .and '+' .and '+' .and optional_space;
1498 optional_space .and '?' .and optional_space;
1501 optional_space .and '}' .and optional_space;
1504 optional_space .and ']' .and optional_space;
1507 optional_space .and ')' .and optional_space;
1510 optional_space .and ';' .and optional_space;
1513 optional_space .and '/' .and optional_space;
1516 optional_space .and '/' .and '=' .and optional_space;
1519 optional_space .and '*' .and optional_space;
1522 optional_space .and '*' .and '=' .and optional_space;
1525 optional_space .and '~' .and optional_space;*/
1527 /* string rulez - these are used internally by the parser when parsing quoted strings */
1529 .string string_lexer;
1532 lex_first_identifier_character .and .loop lex_next_identifier_character;
1534 lex_first_identifier_character
1535 'a'-'z' .or 'A'-'Z' .or '_';
1537 lex_next_identifier_character
1538 'a'-'z' .or 'A'-'Z' .or '0'-'9' .or '_';
1540 /* error rulez - these are used by error messages */
1543 '~' .or '`' .or '!' .or '@' .or '#' .or '$' .or '%' .or '^' .or '&' .or '*' .or '(' .or ')' .or
1544 '-' .or '+' .or '=' .or '|' .or '\\' .or '[' .or ']' .or '{' .or '}' .or ':' .or ';' .or '"' .or
1545 '\'' .or '<' .or ',' .or '>' .or '.' .or '/' .or '?' .or err_identifier;
1548 id_character_first .and .loop id_character_next;