1 //
2 // Copyright (C) 2002-2005  3Dlabs Inc. Ltd.
3 // Copyright (C) 2012-2013 LunarG, Inc.
4 // Copyright (C) 2017 ARM Limited.
5 // Copyright (C) 2015-2019 Google, Inc.
6 // Modifications Copyright (C) 2020 Advanced Micro Devices, Inc. All rights reserved.
7 //
8 // All rights reserved.
9 //
10 // Redistribution and use in source and binary forms, with or without
11 // modification, are permitted provided that the following conditions
12 // are met:
13 //
14 //    Redistributions of source code must retain the above copyright
15 //    notice, this list of conditions and the following disclaimer.
16 //
17 //    Redistributions in binary form must reproduce the above
18 //    copyright notice, this list of conditions and the following
19 //    disclaimer in the documentation and/or other materials provided
20 //    with the distribution.
21 //
22 //    Neither the name of 3Dlabs Inc. Ltd. nor the names of its
23 //    contributors may be used to endorse or promote products derived
24 //    from this software without specific prior written permission.
25 //
26 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
27 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
28 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
29 // FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
30 // COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
31 // INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
32 // BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
33 // LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
34 // CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
35 // LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
36 // ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
37 // POSSIBILITY OF SUCH DAMAGE.
38 //
39 
40 //
41 // Do not edit the .y file, only edit the .m4 file.
42 // The .y bison file is not a source file, it is a derivative of the .m4 file.
43 // The m4 file needs to be processed by m4 to generate the .y bison file.
44 //
45 // Code sandwiched between a pair:
46 //
47 //    GLSLANG_WEB_EXCLUDE_ON
48 //      ...
49 //      ...
50 //      ...
51 //    GLSLANG_WEB_EXCLUDE_OFF
52 //
53 // Will be excluded from the grammar when m4 is executed as:
54 //
55 //    m4 -P -DGLSLANG_WEB
56 //
57 // It will be included when m4 is executed as:
58 //
59 //    m4 -P
60 //
61 
62 
63 
64 
65 /**
66  * This is bison grammar and productions for parsing all versions of the
67  * GLSL shading languages.
68  */
69 %{
70 
71 /* Based on:
72 ANSI C Yacc grammar
73 
74 In 1985, Jeff Lee published his Yacc grammar (which is accompanied by a
75 matching Lex specification) for the April 30, 1985 draft version of the
76 ANSI C standard.  Tom Stockfisch reposted it to net.sources in 1987; that
77 original, as mentioned in the answer to question 17.25 of the comp.lang.c
78 FAQ, can be ftp'ed from ftp.uu.net, file usenet/net.sources/ansi.c.grammar.Z.
79 
80 I intend to keep this version as close to the current C Standard grammar as
81 possible; please let me know if you discover discrepancies.
82 
83 Jutta Degener, 1995
84 */
85 
86 #include "SymbolTable.h"
87 #include "ParseHelper.h"
88 #include "../Public/ShaderLang.h"
89 #include "attribute.h"
90 
91 using namespace glslang;
92 
93 %}
94 
95 %define parse.error verbose
96 
97 %union {
98     struct {
99         glslang::TSourceLoc loc;
100         union {
101             glslang::TString *string;
102             int i;
103             unsigned int u;
104             long long i64;
105             unsigned long long u64;
106             bool b;
107             double d;
108         };
109         glslang::TSymbol* symbol;
110     } lex;
111     struct {
112         glslang::TSourceLoc loc;
113         glslang::TOperator op;
114         union {
115             TIntermNode* intermNode;
116             glslang::TIntermNodePair nodePair;
117             glslang::TIntermTyped* intermTypedNode;
118             glslang::TAttributes* attributes;
119         };
120         union {
121             glslang::TPublicType type;
122             glslang::TFunction* function;
123             glslang::TParameter param;
124             glslang::TTypeLoc typeLine;
125             glslang::TTypeList* typeList;
126             glslang::TArraySizes* arraySizes;
127             glslang::TIdentifierList* identifierList;
128         };
129         glslang::TArraySizes* typeParameters;
130     } interm;
131 }
132 
133 %{
134 
135 /* windows only pragma */
136 #ifdef _MSC_VER
137     #pragma warning(disable : 4065)
138     #pragma warning(disable : 4127)
139     #pragma warning(disable : 4244)
140 #endif
141 
142 #define parseContext (*pParseContext)
143 #define yyerror(context, msg) context->parserError(msg)
144 
145 extern int yylex(YYSTYPE*, TParseContext&);
146 
147 %}
148 
149 %parse-param {glslang::TParseContext* pParseContext}
150 %lex-param {parseContext}
151 %pure-parser  // enable thread safety
152 %expect 1     // One shift reduce conflict because of if | else
153 
154 %token <lex> CONST BOOL INT UINT FLOAT
155 %token <lex> BVEC2 BVEC3 BVEC4
156 %token <lex> IVEC2 IVEC3 IVEC4
157 %token <lex> UVEC2 UVEC3 UVEC4
158 %token <lex> VEC2 VEC3 VEC4
159 %token <lex> MAT2 MAT3 MAT4
160 %token <lex> MAT2X2 MAT2X3 MAT2X4
161 %token <lex> MAT3X2 MAT3X3 MAT3X4
162 %token <lex> MAT4X2 MAT4X3 MAT4X4
163 
164 // combined image/sampler
165 %token <lex> SAMPLER2D SAMPLER3D SAMPLERCUBE SAMPLER2DSHADOW
166 %token <lex> SAMPLERCUBESHADOW SAMPLER2DARRAY
167 %token <lex> SAMPLER2DARRAYSHADOW ISAMPLER2D ISAMPLER3D ISAMPLERCUBE
168 %token <lex> ISAMPLER2DARRAY USAMPLER2D USAMPLER3D
169 %token <lex> USAMPLERCUBE USAMPLER2DARRAY
170 
171 // separate image/sampler
172 %token <lex> SAMPLER SAMPLERSHADOW
173 %token <lex>  TEXTURE2D  TEXTURE3D  TEXTURECUBE  TEXTURE2DARRAY
174 %token <lex> ITEXTURE2D ITEXTURE3D ITEXTURECUBE ITEXTURE2DARRAY
175 %token <lex> UTEXTURE2D UTEXTURE3D UTEXTURECUBE UTEXTURE2DARRAY
176 
177 
178 
179 %token <lex> ATTRIBUTE VARYING
180 %token <lex> FLOAT16_T FLOAT32_T DOUBLE FLOAT64_T
181 %token <lex> INT64_T UINT64_T INT32_T UINT32_T INT16_T UINT16_T INT8_T UINT8_T
182 %token <lex> I64VEC2 I64VEC3 I64VEC4
183 %token <lex> U64VEC2 U64VEC3 U64VEC4
184 %token <lex> I32VEC2 I32VEC3 I32VEC4
185 %token <lex> U32VEC2 U32VEC3 U32VEC4
186 %token <lex> I16VEC2 I16VEC3 I16VEC4
187 %token <lex> U16VEC2 U16VEC3 U16VEC4
188 %token <lex> I8VEC2  I8VEC3  I8VEC4
189 %token <lex> U8VEC2  U8VEC3  U8VEC4
190 %token <lex> DVEC2 DVEC3 DVEC4 DMAT2 DMAT3 DMAT4
191 %token <lex> F16VEC2 F16VEC3 F16VEC4 F16MAT2 F16MAT3 F16MAT4
192 %token <lex> F32VEC2 F32VEC3 F32VEC4 F32MAT2 F32MAT3 F32MAT4
193 %token <lex> F64VEC2 F64VEC3 F64VEC4 F64MAT2 F64MAT3 F64MAT4
194 %token <lex> DMAT2X2 DMAT2X3 DMAT2X4
195 %token <lex> DMAT3X2 DMAT3X3 DMAT3X4
196 %token <lex> DMAT4X2 DMAT4X3 DMAT4X4
197 %token <lex> F16MAT2X2 F16MAT2X3 F16MAT2X4
198 %token <lex> F16MAT3X2 F16MAT3X3 F16MAT3X4
199 %token <lex> F16MAT4X2 F16MAT4X3 F16MAT4X4
200 %token <lex> F32MAT2X2 F32MAT2X3 F32MAT2X4
201 %token <lex> F32MAT3X2 F32MAT3X3 F32MAT3X4
202 %token <lex> F32MAT4X2 F32MAT4X3 F32MAT4X4
203 %token <lex> F64MAT2X2 F64MAT2X3 F64MAT2X4
204 %token <lex> F64MAT3X2 F64MAT3X3 F64MAT3X4
205 %token <lex> F64MAT4X2 F64MAT4X3 F64MAT4X4
206 %token <lex> ATOMIC_UINT
207 %token <lex> ACCSTRUCTNV
208 %token <lex> ACCSTRUCTEXT
209 %token <lex> RAYQUERYEXT
210 %token <lex> FCOOPMATNV ICOOPMATNV UCOOPMATNV
211 
212 // combined image/sampler
213 %token <lex> SAMPLERCUBEARRAY SAMPLERCUBEARRAYSHADOW
214 %token <lex> ISAMPLERCUBEARRAY USAMPLERCUBEARRAY
215 %token <lex> SAMPLER1D SAMPLER1DARRAY SAMPLER1DARRAYSHADOW ISAMPLER1D SAMPLER1DSHADOW
216 %token <lex> SAMPLER2DRECT SAMPLER2DRECTSHADOW ISAMPLER2DRECT USAMPLER2DRECT
217 %token <lex> SAMPLERBUFFER ISAMPLERBUFFER USAMPLERBUFFER
218 %token <lex> SAMPLER2DMS ISAMPLER2DMS USAMPLER2DMS
219 %token <lex> SAMPLER2DMSARRAY ISAMPLER2DMSARRAY USAMPLER2DMSARRAY
220 %token <lex> SAMPLEREXTERNALOES
221 %token <lex> SAMPLEREXTERNAL2DY2YEXT
222 %token <lex> ISAMPLER1DARRAY USAMPLER1D USAMPLER1DARRAY
223 %token <lex> F16SAMPLER1D F16SAMPLER2D F16SAMPLER3D F16SAMPLER2DRECT F16SAMPLERCUBE
224 %token <lex> F16SAMPLER1DARRAY F16SAMPLER2DARRAY F16SAMPLERCUBEARRAY
225 %token <lex> F16SAMPLERBUFFER F16SAMPLER2DMS F16SAMPLER2DMSARRAY
226 %token <lex> F16SAMPLER1DSHADOW F16SAMPLER2DSHADOW F16SAMPLER1DARRAYSHADOW F16SAMPLER2DARRAYSHADOW
227 %token <lex> F16SAMPLER2DRECTSHADOW F16SAMPLERCUBESHADOW F16SAMPLERCUBEARRAYSHADOW
228 
229 // images
230 %token <lex> IMAGE1D IIMAGE1D UIMAGE1D IMAGE2D IIMAGE2D
231 %token <lex> UIMAGE2D IMAGE3D IIMAGE3D UIMAGE3D
232 %token <lex> IMAGE2DRECT IIMAGE2DRECT UIMAGE2DRECT
233 %token <lex> IMAGECUBE IIMAGECUBE UIMAGECUBE
234 %token <lex> IMAGEBUFFER IIMAGEBUFFER UIMAGEBUFFER
235 %token <lex> IMAGE1DARRAY IIMAGE1DARRAY UIMAGE1DARRAY
236 %token <lex> IMAGE2DARRAY IIMAGE2DARRAY UIMAGE2DARRAY
237 %token <lex> IMAGECUBEARRAY IIMAGECUBEARRAY UIMAGECUBEARRAY
238 %token <lex> IMAGE2DMS IIMAGE2DMS UIMAGE2DMS
239 %token <lex> IMAGE2DMSARRAY IIMAGE2DMSARRAY UIMAGE2DMSARRAY
240 
241 %token <lex> F16IMAGE1D F16IMAGE2D F16IMAGE3D F16IMAGE2DRECT
242 %token <lex> F16IMAGECUBE F16IMAGE1DARRAY F16IMAGE2DARRAY F16IMAGECUBEARRAY
243 %token <lex> F16IMAGEBUFFER F16IMAGE2DMS F16IMAGE2DMSARRAY
244 
245 %token <lex> I64IMAGE1D U64IMAGE1D
246 %token <lex> I64IMAGE2D U64IMAGE2D
247 %token <lex> I64IMAGE3D U64IMAGE3D
248 %token <lex> I64IMAGE2DRECT U64IMAGE2DRECT
249 %token <lex> I64IMAGECUBE U64IMAGECUBE
250 %token <lex> I64IMAGEBUFFER U64IMAGEBUFFER
251 %token <lex> I64IMAGE1DARRAY U64IMAGE1DARRAY
252 %token <lex> I64IMAGE2DARRAY U64IMAGE2DARRAY
253 %token <lex> I64IMAGECUBEARRAY U64IMAGECUBEARRAY
254 %token <lex> I64IMAGE2DMS U64IMAGE2DMS
255 %token <lex> I64IMAGE2DMSARRAY U64IMAGE2DMSARRAY
256 
257 // texture without sampler
258 %token <lex> TEXTURECUBEARRAY ITEXTURECUBEARRAY UTEXTURECUBEARRAY
259 %token <lex> TEXTURE1D ITEXTURE1D UTEXTURE1D
260 %token <lex> TEXTURE1DARRAY ITEXTURE1DARRAY UTEXTURE1DARRAY
261 %token <lex> TEXTURE2DRECT ITEXTURE2DRECT UTEXTURE2DRECT
262 %token <lex> TEXTUREBUFFER ITEXTUREBUFFER UTEXTUREBUFFER
263 %token <lex> TEXTURE2DMS ITEXTURE2DMS UTEXTURE2DMS
264 %token <lex> TEXTURE2DMSARRAY ITEXTURE2DMSARRAY UTEXTURE2DMSARRAY
265 
266 %token <lex> F16TEXTURE1D F16TEXTURE2D F16TEXTURE3D F16TEXTURE2DRECT F16TEXTURECUBE
267 %token <lex> F16TEXTURE1DARRAY F16TEXTURE2DARRAY F16TEXTURECUBEARRAY
268 %token <lex> F16TEXTUREBUFFER F16TEXTURE2DMS F16TEXTURE2DMSARRAY
269 
270 // input attachments
271 %token <lex> SUBPASSINPUT SUBPASSINPUTMS ISUBPASSINPUT ISUBPASSINPUTMS USUBPASSINPUT USUBPASSINPUTMS
272 %token <lex> F16SUBPASSINPUT F16SUBPASSINPUTMS
273 
274 
275 
276 %token <lex> LEFT_OP RIGHT_OP
277 %token <lex> INC_OP DEC_OP LE_OP GE_OP EQ_OP NE_OP
278 %token <lex> AND_OP OR_OP XOR_OP MUL_ASSIGN DIV_ASSIGN ADD_ASSIGN
279 %token <lex> MOD_ASSIGN LEFT_ASSIGN RIGHT_ASSIGN AND_ASSIGN XOR_ASSIGN OR_ASSIGN
280 %token <lex> SUB_ASSIGN
281 %token <lex> STRING_LITERAL
282 
283 %token <lex> LEFT_PAREN RIGHT_PAREN LEFT_BRACKET RIGHT_BRACKET LEFT_BRACE RIGHT_BRACE DOT
284 %token <lex> COMMA COLON EQUAL SEMICOLON BANG DASH TILDE PLUS STAR SLASH PERCENT
285 %token <lex> LEFT_ANGLE RIGHT_ANGLE VERTICAL_BAR CARET AMPERSAND QUESTION
286 
287 %token <lex> INVARIANT
288 %token <lex> HIGH_PRECISION MEDIUM_PRECISION LOW_PRECISION PRECISION
289 %token <lex> PACKED RESOURCE SUPERP
290 
291 %token <lex> FLOATCONSTANT INTCONSTANT UINTCONSTANT BOOLCONSTANT
292 %token <lex> IDENTIFIER TYPE_NAME
293 %token <lex> CENTROID IN OUT INOUT
294 %token <lex> STRUCT VOID WHILE
295 %token <lex> BREAK CONTINUE DO ELSE FOR IF DISCARD RETURN SWITCH CASE DEFAULT
296 %token <lex> TERMINATE_INVOCATION
297 %token <lex> TERMINATE_RAY IGNORE_INTERSECTION
298 %token <lex> UNIFORM SHARED BUFFER
299 %token <lex> FLAT SMOOTH LAYOUT
300 
301 
302 %token <lex> DOUBLECONSTANT INT16CONSTANT UINT16CONSTANT FLOAT16CONSTANT INT32CONSTANT UINT32CONSTANT
303 %token <lex> INT64CONSTANT UINT64CONSTANT
304 %token <lex> SUBROUTINE DEMOTE
305 %token <lex> PAYLOADNV PAYLOADINNV HITATTRNV CALLDATANV CALLDATAINNV
306 %token <lex> PAYLOADEXT PAYLOADINEXT HITATTREXT CALLDATAEXT CALLDATAINEXT
307 %token <lex> PATCH SAMPLE NONUNIFORM
308 %token <lex> COHERENT VOLATILE RESTRICT READONLY WRITEONLY DEVICECOHERENT QUEUEFAMILYCOHERENT WORKGROUPCOHERENT
309 %token <lex> SUBGROUPCOHERENT NONPRIVATE SHADERCALLCOHERENT
310 %token <lex> NOPERSPECTIVE EXPLICITINTERPAMD PERVERTEXNV PERPRIMITIVENV PERVIEWNV PERTASKNV
311 %token <lex> PRECISE
312 
313 
314 %type <interm> assignment_operator unary_operator
315 %type <interm.intermTypedNode> variable_identifier primary_expression postfix_expression
316 %type <interm.intermTypedNode> expression integer_expression assignment_expression
317 %type <interm.intermTypedNode> unary_expression multiplicative_expression additive_expression
318 %type <interm.intermTypedNode> relational_expression equality_expression
319 %type <interm.intermTypedNode> conditional_expression constant_expression
320 %type <interm.intermTypedNode> logical_or_expression logical_xor_expression logical_and_expression
321 %type <interm.intermTypedNode> shift_expression and_expression exclusive_or_expression inclusive_or_expression
322 %type <interm.intermTypedNode> function_call initializer condition conditionopt
323 
324 %type <interm.intermNode> translation_unit function_definition
325 %type <interm.intermNode> statement simple_statement
326 %type <interm.intermNode> statement_list switch_statement_list compound_statement
327 %type <interm.intermNode> declaration_statement selection_statement selection_statement_nonattributed expression_statement
328 %type <interm.intermNode> switch_statement switch_statement_nonattributed case_label
329 %type <interm.intermNode> declaration external_declaration
330 %type <interm.intermNode> for_init_statement compound_statement_no_new_scope
331 %type <interm.nodePair> selection_rest_statement for_rest_statement
332 %type <interm.intermNode> iteration_statement iteration_statement_nonattributed jump_statement statement_no_new_scope statement_scoped
333 %type <interm> single_declaration init_declarator_list
334 
335 %type <interm> parameter_declaration parameter_declarator parameter_type_specifier
336 
337 %type <interm> array_specifier
338 %type <interm.type> invariant_qualifier interpolation_qualifier storage_qualifier precision_qualifier
339 %type <interm.type> layout_qualifier layout_qualifier_id_list layout_qualifier_id
340 
341 %type <interm.typeParameters> type_parameter_specifier
342 %type <interm.typeParameters> type_parameter_specifier_opt
343 %type <interm.typeParameters> type_parameter_specifier_list
344 
345 %type <interm.type> type_qualifier fully_specified_type type_specifier
346 %type <interm.type> single_type_qualifier
347 %type <interm.type> type_specifier_nonarray
348 %type <interm.type> struct_specifier
349 %type <interm.typeLine> struct_declarator
350 %type <interm.typeList> struct_declarator_list struct_declaration struct_declaration_list
351 %type <interm> block_structure
352 %type <interm.function> function_header function_declarator
353 %type <interm.function> function_header_with_parameters
354 %type <interm> function_call_header_with_parameters function_call_header_no_parameters function_call_generic function_prototype
355 %type <interm> function_call_or_method function_identifier function_call_header
356 
357 %type <interm.identifierList> identifier_list
358 
359 
360 %type <interm.type> precise_qualifier non_uniform_qualifier
361 %type <interm.typeList> type_name_list
362 %type <interm.attributes> attribute attribute_list single_attribute
363 %type <interm.intermNode> demote_statement
364 %type <interm.intermTypedNode> initializer_list
365 
366 
367 %start translation_unit
368 %%
369 
370 variable_identifier
371     : IDENTIFIER {
372         $$ = parseContext.handleVariable($1.loc, $1.symbol, $1.string);
373     }
374     ;
375 
376 primary_expression
377     : variable_identifier {
378         $$ = $1;
379     }
380     | LEFT_PAREN expression RIGHT_PAREN {
381         $$ = $2;
382         if ($$->getAsConstantUnion())
383             $$->getAsConstantUnion()->setExpression();
384     }
385     | FLOATCONSTANT {
386         $$ = parseContext.intermediate.addConstantUnion($1.d, EbtFloat, $1.loc, true);
387     }
388     | INTCONSTANT {
389         $$ = parseContext.intermediate.addConstantUnion($1.i, $1.loc, true);
390     }
391     | UINTCONSTANT {
392         parseContext.fullIntegerCheck($1.loc, "unsigned literal");
393         $$ = parseContext.intermediate.addConstantUnion($1.u, $1.loc, true);
394     }
395     | BOOLCONSTANT {
396         $$ = parseContext.intermediate.addConstantUnion($1.b, $1.loc, true);
397     }
398 
399     | STRING_LITERAL {
400         $$ = parseContext.intermediate.addConstantUnion($1.string, $1.loc, true);
401     }
402     | INT32CONSTANT {
403         parseContext.explicitInt32Check($1.loc, "32-bit signed literal");
404         $$ = parseContext.intermediate.addConstantUnion($1.i, $1.loc, true);
405     }
406     | UINT32CONSTANT {
407         parseContext.explicitInt32Check($1.loc, "32-bit signed literal");
408         $$ = parseContext.intermediate.addConstantUnion($1.u, $1.loc, true);
409     }
410     | INT64CONSTANT {
411         parseContext.int64Check($1.loc, "64-bit integer literal");
412         $$ = parseContext.intermediate.addConstantUnion($1.i64, $1.loc, true);
413     }
414     | UINT64CONSTANT {
415         parseContext.int64Check($1.loc, "64-bit unsigned integer literal");
416         $$ = parseContext.intermediate.addConstantUnion($1.u64, $1.loc, true);
417     }
418     | INT16CONSTANT {
419         parseContext.explicitInt16Check($1.loc, "16-bit integer literal");
420         $$ = parseContext.intermediate.addConstantUnion((short)$1.i, $1.loc, true);
421     }
422     | UINT16CONSTANT {
423         parseContext.explicitInt16Check($1.loc, "16-bit unsigned integer literal");
424         $$ = parseContext.intermediate.addConstantUnion((unsigned short)$1.u, $1.loc, true);
425     }
426     | DOUBLECONSTANT {
427         parseContext.requireProfile($1.loc, ECoreProfile | ECompatibilityProfile, "double literal");
428         if (! parseContext.symbolTable.atBuiltInLevel())
429             parseContext.doubleCheck($1.loc, "double literal");
430         $$ = parseContext.intermediate.addConstantUnion($1.d, EbtDouble, $1.loc, true);
431     }
432     | FLOAT16CONSTANT {
433         parseContext.float16Check($1.loc, "half float literal");
434         $$ = parseContext.intermediate.addConstantUnion($1.d, EbtFloat16, $1.loc, true);
435     }
436 
437     ;
438 
439 postfix_expression
440     : primary_expression {
441         $$ = $1;
442     }
443     | postfix_expression LEFT_BRACKET integer_expression RIGHT_BRACKET {
444         $$ = parseContext.handleBracketDereference($2.loc, $1, $3);
445     }
446     | function_call {
447         $$ = $1;
448     }
449     | postfix_expression DOT IDENTIFIER {
450         $$ = parseContext.handleDotDereference($3.loc, $1, *$3.string);
451     }
452     | postfix_expression INC_OP {
453         parseContext.variableCheck($1);
454         parseContext.lValueErrorCheck($2.loc, "++", $1);
455         $$ = parseContext.handleUnaryMath($2.loc, "++", EOpPostIncrement, $1);
456     }
457     | postfix_expression DEC_OP {
458         parseContext.variableCheck($1);
459         parseContext.lValueErrorCheck($2.loc, "--", $1);
460         $$ = parseContext.handleUnaryMath($2.loc, "--", EOpPostDecrement, $1);
461     }
462     ;
463 
464 integer_expression
465     : expression {
466         parseContext.integerCheck($1, "[]");
467         $$ = $1;
468     }
469     ;
470 
471 function_call
472     : function_call_or_method {
473         $$ = parseContext.handleFunctionCall($1.loc, $1.function, $1.intermNode);
474         delete $1.function;
475     }
476     ;
477 
478 function_call_or_method
479     : function_call_generic {
480         $$ = $1;
481     }
482     ;
483 
484 function_call_generic
485     : function_call_header_with_parameters RIGHT_PAREN {
486         $$ = $1;
487         $$.loc = $2.loc;
488     }
489     | function_call_header_no_parameters RIGHT_PAREN {
490         $$ = $1;
491         $$.loc = $2.loc;
492     }
493     ;
494 
495 function_call_header_no_parameters
496     : function_call_header VOID {
497         $$ = $1;
498     }
499     | function_call_header {
500         $$ = $1;
501     }
502     ;
503 
504 function_call_header_with_parameters
505     : function_call_header assignment_expression {
506         TParameter param = { 0, new TType };
507         param.type->shallowCopy($2->getType());
508         $1.function->addParameter(param);
509         $$.function = $1.function;
510         $$.intermNode = $2;
511     }
512     | function_call_header_with_parameters COMMA assignment_expression {
513         TParameter param = { 0, new TType };
514         param.type->shallowCopy($3->getType());
515         $1.function->addParameter(param);
516         $$.function = $1.function;
517         $$.intermNode = parseContext.intermediate.growAggregate($1.intermNode, $3, $2.loc);
518     }
519     ;
520 
521 function_call_header
522     : function_identifier LEFT_PAREN {
523         $$ = $1;
524     }
525     ;
526 
527 // Grammar Note:  Constructors look like functions, but are recognized as types.
528 
529 function_identifier
530     : type_specifier {
531         // Constructor
532         $$.intermNode = 0;
533         $$.function = parseContext.handleConstructorCall($1.loc, $1);
534     }
535     | postfix_expression {
536         //
537         // Should be a method or subroutine call, but we haven't recognized the arguments yet.
538         //
539         $$.function = 0;
540         $$.intermNode = 0;
541 
542         TIntermMethod* method = $1->getAsMethodNode();
543         if (method) {
544             $$.function = new TFunction(&method->getMethodName(), TType(EbtInt), EOpArrayLength);
545             $$.intermNode = method->getObject();
546         } else {
547             TIntermSymbol* symbol = $1->getAsSymbolNode();
548             if (symbol) {
549                 parseContext.reservedErrorCheck(symbol->getLoc(), symbol->getName());
550                 TFunction *function = new TFunction(&symbol->getName(), TType(EbtVoid));
551                 $$.function = function;
552             } else
553                 parseContext.error($1->getLoc(), "function call, method, or subroutine call expected", "", "");
554         }
555 
556         if ($$.function == 0) {
557             // error recover
558             TString* empty = NewPoolTString("");
559             $$.function = new TFunction(empty, TType(EbtVoid), EOpNull);
560         }
561     }
562 
563     | non_uniform_qualifier {
564         // Constructor
565         $$.intermNode = 0;
566         $$.function = parseContext.handleConstructorCall($1.loc, $1);
567     }
568 
569     ;
570 
571 unary_expression
572     : postfix_expression {
573         parseContext.variableCheck($1);
574         $$ = $1;
575         if (TIntermMethod* method = $1->getAsMethodNode())
576             parseContext.error($1->getLoc(), "incomplete method syntax", method->getMethodName().c_str(), "");
577     }
578     | INC_OP unary_expression {
579         parseContext.lValueErrorCheck($1.loc, "++", $2);
580         $$ = parseContext.handleUnaryMath($1.loc, "++", EOpPreIncrement, $2);
581     }
582     | DEC_OP unary_expression {
583         parseContext.lValueErrorCheck($1.loc, "--", $2);
584         $$ = parseContext.handleUnaryMath($1.loc, "--", EOpPreDecrement, $2);
585     }
586     | unary_operator unary_expression {
587         if ($1.op != EOpNull) {
588             char errorOp[2] = {0, 0};
589             switch($1.op) {
590             case EOpNegative:   errorOp[0] = '-'; break;
591             case EOpLogicalNot: errorOp[0] = '!'; break;
592             case EOpBitwiseNot: errorOp[0] = '~'; break;
593             default: break; // some compilers want this
594             }
595             $$ = parseContext.handleUnaryMath($1.loc, errorOp, $1.op, $2);
596         } else {
597             $$ = $2;
598             if ($$->getAsConstantUnion())
599                 $$->getAsConstantUnion()->setExpression();
600         }
601     }
602     ;
603 // Grammar Note:  No traditional style type casts.
604 
605 unary_operator
606     : PLUS  { $$.loc = $1.loc; $$.op = EOpNull; }
607     | DASH  { $$.loc = $1.loc; $$.op = EOpNegative; }
608     | BANG  { $$.loc = $1.loc; $$.op = EOpLogicalNot; }
609     | TILDE { $$.loc = $1.loc; $$.op = EOpBitwiseNot;
610               parseContext.fullIntegerCheck($1.loc, "bitwise not"); }
611     ;
612 // Grammar Note:  No '*' or '&' unary ops.  Pointers are not supported.
613 
614 multiplicative_expression
615     : unary_expression { $$ = $1; }
616     | multiplicative_expression STAR unary_expression {
617         $$ = parseContext.handleBinaryMath($2.loc, "*", EOpMul, $1, $3);
618         if ($$ == 0)
619             $$ = $1;
620     }
621     | multiplicative_expression SLASH unary_expression {
622         $$ = parseContext.handleBinaryMath($2.loc, "/", EOpDiv, $1, $3);
623         if ($$ == 0)
624             $$ = $1;
625     }
626     | multiplicative_expression PERCENT unary_expression {
627         parseContext.fullIntegerCheck($2.loc, "%");
628         $$ = parseContext.handleBinaryMath($2.loc, "%", EOpMod, $1, $3);
629         if ($$ == 0)
630             $$ = $1;
631     }
632     ;
633 
634 additive_expression
635     : multiplicative_expression { $$ = $1; }
636     | additive_expression PLUS multiplicative_expression {
637         $$ = parseContext.handleBinaryMath($2.loc, "+", EOpAdd, $1, $3);
638         if ($$ == 0)
639             $$ = $1;
640     }
641     | additive_expression DASH multiplicative_expression {
642         $$ = parseContext.handleBinaryMath($2.loc, "-", EOpSub, $1, $3);
643         if ($$ == 0)
644             $$ = $1;
645     }
646     ;
647 
648 shift_expression
649     : additive_expression { $$ = $1; }
650     | shift_expression LEFT_OP additive_expression {
651         parseContext.fullIntegerCheck($2.loc, "bit shift left");
652         $$ = parseContext.handleBinaryMath($2.loc, "<<", EOpLeftShift, $1, $3);
653         if ($$ == 0)
654             $$ = $1;
655     }
656     | shift_expression RIGHT_OP additive_expression {
657         parseContext.fullIntegerCheck($2.loc, "bit shift right");
658         $$ = parseContext.handleBinaryMath($2.loc, ">>", EOpRightShift, $1, $3);
659         if ($$ == 0)
660             $$ = $1;
661     }
662     ;
663 
664 relational_expression
665     : shift_expression { $$ = $1; }
666     | relational_expression LEFT_ANGLE shift_expression {
667         $$ = parseContext.handleBinaryMath($2.loc, "<", EOpLessThan, $1, $3);
668         if ($$ == 0)
669             $$ = parseContext.intermediate.addConstantUnion(false, $2.loc);
670     }
671     | relational_expression RIGHT_ANGLE shift_expression  {
672         $$ = parseContext.handleBinaryMath($2.loc, ">", EOpGreaterThan, $1, $3);
673         if ($$ == 0)
674             $$ = parseContext.intermediate.addConstantUnion(false, $2.loc);
675     }
676     | relational_expression LE_OP shift_expression  {
677         $$ = parseContext.handleBinaryMath($2.loc, "<=", EOpLessThanEqual, $1, $3);
678         if ($$ == 0)
679             $$ = parseContext.intermediate.addConstantUnion(false, $2.loc);
680     }
681     | relational_expression GE_OP shift_expression  {
682         $$ = parseContext.handleBinaryMath($2.loc, ">=", EOpGreaterThanEqual, $1, $3);
683         if ($$ == 0)
684             $$ = parseContext.intermediate.addConstantUnion(false, $2.loc);
685     }
686     ;
687 
688 equality_expression
689     : relational_expression { $$ = $1; }
690     | equality_expression EQ_OP relational_expression  {
691         parseContext.arrayObjectCheck($2.loc, $1->getType(), "array comparison");
692         parseContext.opaqueCheck($2.loc, $1->getType(), "==");
693         parseContext.specializationCheck($2.loc, $1->getType(), "==");
694         parseContext.referenceCheck($2.loc, $1->getType(), "==");
695         $$ = parseContext.handleBinaryMath($2.loc, "==", EOpEqual, $1, $3);
696         if ($$ == 0)
697             $$ = parseContext.intermediate.addConstantUnion(false, $2.loc);
698     }
699     | equality_expression NE_OP relational_expression {
700         parseContext.arrayObjectCheck($2.loc, $1->getType(), "array comparison");
701         parseContext.opaqueCheck($2.loc, $1->getType(), "!=");
702         parseContext.specializationCheck($2.loc, $1->getType(), "!=");
703         parseContext.referenceCheck($2.loc, $1->getType(), "!=");
704         $$ = parseContext.handleBinaryMath($2.loc, "!=", EOpNotEqual, $1, $3);
705         if ($$ == 0)
706             $$ = parseContext.intermediate.addConstantUnion(false, $2.loc);
707     }
708     ;
709 
710 and_expression
711     : equality_expression { $$ = $1; }
712     | and_expression AMPERSAND equality_expression {
713         parseContext.fullIntegerCheck($2.loc, "bitwise and");
714         $$ = parseContext.handleBinaryMath($2.loc, "&", EOpAnd, $1, $3);
715         if ($$ == 0)
716             $$ = $1;
717     }
718     ;
719 
720 exclusive_or_expression
721     : and_expression { $$ = $1; }
722     | exclusive_or_expression CARET and_expression {
723         parseContext.fullIntegerCheck($2.loc, "bitwise exclusive or");
724         $$ = parseContext.handleBinaryMath($2.loc, "^", EOpExclusiveOr, $1, $3);
725         if ($$ == 0)
726             $$ = $1;
727     }
728     ;
729 
730 inclusive_or_expression
731     : exclusive_or_expression { $$ = $1; }
732     | inclusive_or_expression VERTICAL_BAR exclusive_or_expression {
733         parseContext.fullIntegerCheck($2.loc, "bitwise inclusive or");
734         $$ = parseContext.handleBinaryMath($2.loc, "|", EOpInclusiveOr, $1, $3);
735         if ($$ == 0)
736             $$ = $1;
737     }
738     ;
739 
740 logical_and_expression
741     : inclusive_or_expression { $$ = $1; }
742     | logical_and_expression AND_OP inclusive_or_expression {
743         $$ = parseContext.handleBinaryMath($2.loc, "&&", EOpLogicalAnd, $1, $3);
744         if ($$ == 0)
745             $$ = parseContext.intermediate.addConstantUnion(false, $2.loc);
746     }
747     ;
748 
749 logical_xor_expression
750     : logical_and_expression { $$ = $1; }
751     | logical_xor_expression XOR_OP logical_and_expression  {
752         $$ = parseContext.handleBinaryMath($2.loc, "^^", EOpLogicalXor, $1, $3);
753         if ($$ == 0)
754             $$ = parseContext.intermediate.addConstantUnion(false, $2.loc);
755     }
756     ;
757 
758 logical_or_expression
759     : logical_xor_expression { $$ = $1; }
760     | logical_or_expression OR_OP logical_xor_expression  {
761         $$ = parseContext.handleBinaryMath($2.loc, "||", EOpLogicalOr, $1, $3);
762         if ($$ == 0)
763             $$ = parseContext.intermediate.addConstantUnion(false, $2.loc);
764     }
765     ;
766 
767 conditional_expression
768     : logical_or_expression { $$ = $1; }
769     | logical_or_expression QUESTION {
770         ++parseContext.controlFlowNestingLevel;
771     }
772       expression COLON assignment_expression {
773         --parseContext.controlFlowNestingLevel;
774         parseContext.boolCheck($2.loc, $1);
775         parseContext.rValueErrorCheck($2.loc, "?", $1);
776         parseContext.rValueErrorCheck($5.loc, ":", $4);
777         parseContext.rValueErrorCheck($5.loc, ":", $6);
778         $$ = parseContext.intermediate.addSelection($1, $4, $6, $2.loc);
779         if ($$ == 0) {
780             parseContext.binaryOpError($2.loc, ":", $4->getCompleteString(), $6->getCompleteString());
781             $$ = $6;
782         }
783     }
784     ;
785 
786 assignment_expression
787     : conditional_expression { $$ = $1; }
788     | unary_expression assignment_operator assignment_expression {
789         parseContext.arrayObjectCheck($2.loc, $1->getType(), "array assignment");
790         parseContext.opaqueCheck($2.loc, $1->getType(), "=");
791         parseContext.storage16BitAssignmentCheck($2.loc, $1->getType(), "=");
792         parseContext.specializationCheck($2.loc, $1->getType(), "=");
793         parseContext.lValueErrorCheck($2.loc, "assign", $1);
794         parseContext.rValueErrorCheck($2.loc, "assign", $3);
795         $$ = parseContext.addAssign($2.loc, $2.op, $1, $3);
796         if ($$ == 0) {
797             parseContext.assignError($2.loc, "assign", $1->getCompleteString(), $3->getCompleteString());
798             $$ = $1;
799         }
800     }
801     ;
802 
803 assignment_operator
804     : EQUAL {
805         $$.loc = $1.loc;
806         $$.op = EOpAssign;
807     }
808     | MUL_ASSIGN {
809         $$.loc = $1.loc;
810         $$.op = EOpMulAssign;
811     }
812     | DIV_ASSIGN {
813         $$.loc = $1.loc;
814         $$.op = EOpDivAssign;
815     }
816     | MOD_ASSIGN {
817         parseContext.fullIntegerCheck($1.loc, "%=");
818         $$.loc = $1.loc;
819         $$.op = EOpModAssign;
820     }
821     | ADD_ASSIGN {
822         $$.loc = $1.loc;
823         $$.op = EOpAddAssign;
824     }
825     | SUB_ASSIGN {
826         $$.loc = $1.loc;
827         $$.op = EOpSubAssign;
828     }
829     | LEFT_ASSIGN {
830         parseContext.fullIntegerCheck($1.loc, "bit-shift left assign");
831         $$.loc = $1.loc; $$.op = EOpLeftShiftAssign;
832     }
833     | RIGHT_ASSIGN {
834         parseContext.fullIntegerCheck($1.loc, "bit-shift right assign");
835         $$.loc = $1.loc; $$.op = EOpRightShiftAssign;
836     }
837     | AND_ASSIGN {
838         parseContext.fullIntegerCheck($1.loc, "bitwise-and assign");
839         $$.loc = $1.loc; $$.op = EOpAndAssign;
840     }
841     | XOR_ASSIGN {
842         parseContext.fullIntegerCheck($1.loc, "bitwise-xor assign");
843         $$.loc = $1.loc; $$.op = EOpExclusiveOrAssign;
844     }
845     | OR_ASSIGN {
846         parseContext.fullIntegerCheck($1.loc, "bitwise-or assign");
847         $$.loc = $1.loc; $$.op = EOpInclusiveOrAssign;
848     }
849     ;
850 
851 expression
852     : assignment_expression {
853         $$ = $1;
854     }
855     | expression COMMA assignment_expression {
856         parseContext.samplerConstructorLocationCheck($2.loc, ",", $3);
857         $$ = parseContext.intermediate.addComma($1, $3, $2.loc);
858         if ($$ == 0) {
859             parseContext.binaryOpError($2.loc, ",", $1->getCompleteString(), $3->getCompleteString());
860             $$ = $3;
861         }
862     }
863     ;
864 
865 constant_expression
866     : conditional_expression {
867         parseContext.constantValueCheck($1, "");
868         $$ = $1;
869     }
870     ;
871 
872 declaration
873     : function_prototype SEMICOLON {
874         parseContext.handleFunctionDeclarator($1.loc, *$1.function, true /* prototype */);
875         $$ = 0;
876         // TODO: 4.0 functionality: subroutines: make the identifier a user type for this signature
877     }
878     | init_declarator_list SEMICOLON {
879         if ($1.intermNode && $1.intermNode->getAsAggregate())
880             $1.intermNode->getAsAggregate()->setOperator(EOpSequence);
881         $$ = $1.intermNode;
882     }
883     | PRECISION precision_qualifier type_specifier SEMICOLON {
884         parseContext.profileRequires($1.loc, ENoProfile, 130, 0, "precision statement");
885         // lazy setting of the previous scope's defaults, has effect only the first time it is called in a particular scope
886         parseContext.symbolTable.setPreviousDefaultPrecisions(&parseContext.defaultPrecision[0]);
887         parseContext.setDefaultPrecision($1.loc, $3, $2.qualifier.precision);
888         $$ = 0;
889     }
890     | block_structure SEMICOLON {
891         parseContext.declareBlock($1.loc, *$1.typeList);
892         $$ = 0;
893     }
894     | block_structure IDENTIFIER SEMICOLON {
895         parseContext.declareBlock($1.loc, *$1.typeList, $2.string);
896         $$ = 0;
897     }
898     | block_structure IDENTIFIER array_specifier SEMICOLON {
899         parseContext.declareBlock($1.loc, *$1.typeList, $2.string, $3.arraySizes);
900         $$ = 0;
901     }
902     | type_qualifier SEMICOLON {
903         parseContext.globalQualifierFixCheck($1.loc, $1.qualifier);
904         parseContext.updateStandaloneQualifierDefaults($1.loc, $1);
905         $$ = 0;
906     }
907     | type_qualifier IDENTIFIER SEMICOLON {
908         parseContext.checkNoShaderLayouts($1.loc, $1.shaderQualifiers);
909         parseContext.addQualifierToExisting($1.loc, $1.qualifier, *$2.string);
910         $$ = 0;
911     }
912     | type_qualifier IDENTIFIER identifier_list SEMICOLON {
913         parseContext.checkNoShaderLayouts($1.loc, $1.shaderQualifiers);
914         $3->push_back($2.string);
915         parseContext.addQualifierToExisting($1.loc, $1.qualifier, *$3);
916         $$ = 0;
917     }
918     ;
919 
920 block_structure
921     : type_qualifier IDENTIFIER LEFT_BRACE { parseContext.nestedBlockCheck($1.loc); } struct_declaration_list RIGHT_BRACE {
922         --parseContext.blockNestingLevel;
923         parseContext.blockName = $2.string;
924         parseContext.globalQualifierFixCheck($1.loc, $1.qualifier);
925         parseContext.checkNoShaderLayouts($1.loc, $1.shaderQualifiers);
926         parseContext.currentBlockQualifier = $1.qualifier;
927         $$.loc = $1.loc;
928         $$.typeList = $5;
929     }
930 
931 identifier_list
932     : COMMA IDENTIFIER {
933         $$ = new TIdentifierList;
934         $$->push_back($2.string);
935     }
936     | identifier_list COMMA IDENTIFIER {
937         $$ = $1;
938         $$->push_back($3.string);
939     }
940     ;
941 
942 function_prototype
943     : function_declarator RIGHT_PAREN  {
944         $$.function = $1;
945         $$.loc = $2.loc;
946     }
947     ;
948 
949 function_declarator
950     : function_header {
951         $$ = $1;
952     }
953     | function_header_with_parameters {
954         $$ = $1;
955     }
956     ;
957 
958 
959 function_header_with_parameters
960     : function_header parameter_declaration {
961         // Add the parameter
962         $$ = $1;
963         if ($2.param.type->getBasicType() != EbtVoid)
964             $1->addParameter($2.param);
965         else
966             delete $2.param.type;
967     }
968     | function_header_with_parameters COMMA parameter_declaration {
969         //
970         // Only first parameter of one-parameter functions can be void
971         // The check for named parameters not being void is done in parameter_declarator
972         //
973         if ($3.param.type->getBasicType() == EbtVoid) {
974             //
975             // This parameter > first is void
976             //
977             parseContext.error($2.loc, "cannot be an argument type except for '(void)'", "void", "");
978             delete $3.param.type;
979         } else {
980             // Add the parameter
981             $$ = $1;
982             $1->addParameter($3.param);
983         }
984     }
985     ;
986 
987 function_header
988     : fully_specified_type IDENTIFIER LEFT_PAREN {
989         if ($1.qualifier.storage != EvqGlobal && $1.qualifier.storage != EvqTemporary) {
990             parseContext.error($2.loc, "no qualifiers allowed for function return",
991                                GetStorageQualifierString($1.qualifier.storage), "");
992         }
993         if ($1.arraySizes)
994             parseContext.arraySizeRequiredCheck($1.loc, *$1.arraySizes);
995 
996         // Add the function as a prototype after parsing it (we do not support recursion)
997         TFunction *function;
998         TType type($1);
999 
1000         // Potentially rename shader entry point function.  No-op most of the time.
1001         parseContext.renameShaderFunction($2.string);
1002 
1003         // Make the function
1004         function = new TFunction($2.string, type);
1005         $$ = function;
1006     }
1007     ;
1008 
1009 parameter_declarator
1010     // Type + name
1011     : type_specifier IDENTIFIER {
1012         if ($1.arraySizes) {
1013             parseContext.profileRequires($1.loc, ENoProfile, 120, E_GL_3DL_array_objects, "arrayed type");
1014             parseContext.profileRequires($1.loc, EEsProfile, 300, 0, "arrayed type");
1015             parseContext.arraySizeRequiredCheck($1.loc, *$1.arraySizes);
1016         }
1017         if ($1.basicType == EbtVoid) {
1018             parseContext.error($2.loc, "illegal use of type 'void'", $2.string->c_str(), "");
1019         }
1020         parseContext.reservedErrorCheck($2.loc, *$2.string);
1021 
1022         TParameter param = {$2.string, new TType($1)};
1023         $$.loc = $2.loc;
1024         $$.param = param;
1025     }
1026     | type_specifier IDENTIFIER array_specifier {
1027         if ($1.arraySizes) {
1028             parseContext.profileRequires($1.loc, ENoProfile, 120, E_GL_3DL_array_objects, "arrayed type");
1029             parseContext.profileRequires($1.loc, EEsProfile, 300, 0, "arrayed type");
1030             parseContext.arraySizeRequiredCheck($1.loc, *$1.arraySizes);
1031         }
1032         TType* type = new TType($1);
1033         type->transferArraySizes($3.arraySizes);
1034         type->copyArrayInnerSizes($1.arraySizes);
1035 
1036         parseContext.arrayOfArrayVersionCheck($2.loc, type->getArraySizes());
1037         parseContext.arraySizeRequiredCheck($3.loc, *$3.arraySizes);
1038         parseContext.reservedErrorCheck($2.loc, *$2.string);
1039 
1040         TParameter param = { $2.string, type };
1041 
1042         $$.loc = $2.loc;
1043         $$.param = param;
1044     }
1045     ;
1046 
1047 parameter_declaration
1048     //
1049     // With name
1050     //
1051     : type_qualifier parameter_declarator {
1052         $$ = $2;
1053         if ($1.qualifier.precision != EpqNone)
1054             $$.param.type->getQualifier().precision = $1.qualifier.precision;
1055         parseContext.precisionQualifierCheck($$.loc, $$.param.type->getBasicType(), $$.param.type->getQualifier());
1056 
1057         parseContext.checkNoShaderLayouts($1.loc, $1.shaderQualifiers);
1058         parseContext.parameterTypeCheck($2.loc, $1.qualifier.storage, *$$.param.type);
1059         parseContext.paramCheckFix($1.loc, $1.qualifier, *$$.param.type);
1060 
1061     }
1062     | parameter_declarator {
1063         $$ = $1;
1064 
1065         parseContext.parameterTypeCheck($1.loc, EvqIn, *$1.param.type);
1066         parseContext.paramCheckFixStorage($1.loc, EvqTemporary, *$$.param.type);
1067         parseContext.precisionQualifierCheck($$.loc, $$.param.type->getBasicType(), $$.param.type->getQualifier());
1068     }
1069     //
1070     // Without name
1071     //
1072     | type_qualifier parameter_type_specifier {
1073         $$ = $2;
1074         if ($1.qualifier.precision != EpqNone)
1075             $$.param.type->getQualifier().precision = $1.qualifier.precision;
1076         parseContext.precisionQualifierCheck($1.loc, $$.param.type->getBasicType(), $$.param.type->getQualifier());
1077 
1078         parseContext.checkNoShaderLayouts($1.loc, $1.shaderQualifiers);
1079         parseContext.parameterTypeCheck($2.loc, $1.qualifier.storage, *$$.param.type);
1080         parseContext.paramCheckFix($1.loc, $1.qualifier, *$$.param.type);
1081     }
1082     | parameter_type_specifier {
1083         $$ = $1;
1084 
1085         parseContext.parameterTypeCheck($1.loc, EvqIn, *$1.param.type);
1086         parseContext.paramCheckFixStorage($1.loc, EvqTemporary, *$$.param.type);
1087         parseContext.precisionQualifierCheck($$.loc, $$.param.type->getBasicType(), $$.param.type->getQualifier());
1088     }
1089     ;
1090 
1091 parameter_type_specifier
1092     : type_specifier {
1093         TParameter param = { 0, new TType($1) };
1094         $$.param = param;
1095         if ($1.arraySizes)
1096             parseContext.arraySizeRequiredCheck($1.loc, *$1.arraySizes);
1097     }
1098     ;
1099 
1100 init_declarator_list
1101     : single_declaration {
1102         $$ = $1;
1103     }
1104     | init_declarator_list COMMA IDENTIFIER {
1105         $$ = $1;
1106         parseContext.declareVariable($3.loc, *$3.string, $1.type);
1107     }
1108     | init_declarator_list COMMA IDENTIFIER array_specifier {
1109         $$ = $1;
1110         parseContext.declareVariable($3.loc, *$3.string, $1.type, $4.arraySizes);
1111     }
1112     | init_declarator_list COMMA IDENTIFIER array_specifier EQUAL initializer {
1113         $$.type = $1.type;
1114         TIntermNode* initNode = parseContext.declareVariable($3.loc, *$3.string, $1.type, $4.arraySizes, $6);
1115         $$.intermNode = parseContext.intermediate.growAggregate($1.intermNode, initNode, $5.loc);
1116     }
1117     | init_declarator_list COMMA IDENTIFIER EQUAL initializer {
1118         $$.type = $1.type;
1119         TIntermNode* initNode = parseContext.declareVariable($3.loc, *$3.string, $1.type, 0, $5);
1120         $$.intermNode = parseContext.intermediate.growAggregate($1.intermNode, initNode, $4.loc);
1121     }
1122     ;
1123 
1124 single_declaration
1125     : fully_specified_type {
1126         $$.type = $1;
1127         $$.intermNode = 0;
1128 
1129         parseContext.declareTypeDefaults($$.loc, $$.type);
1130 
1131     }
1132     | fully_specified_type IDENTIFIER {
1133         $$.type = $1;
1134         $$.intermNode = 0;
1135         parseContext.declareVariable($2.loc, *$2.string, $1);
1136     }
1137     | fully_specified_type IDENTIFIER array_specifier {
1138         $$.type = $1;
1139         $$.intermNode = 0;
1140         parseContext.declareVariable($2.loc, *$2.string, $1, $3.arraySizes);
1141     }
1142     | fully_specified_type IDENTIFIER array_specifier EQUAL initializer {
1143         $$.type = $1;
1144         TIntermNode* initNode = parseContext.declareVariable($2.loc, *$2.string, $1, $3.arraySizes, $5);
1145         $$.intermNode = parseContext.intermediate.growAggregate(0, initNode, $4.loc);
1146     }
1147     | fully_specified_type IDENTIFIER EQUAL initializer {
1148         $$.type = $1;
1149         TIntermNode* initNode = parseContext.declareVariable($2.loc, *$2.string, $1, 0, $4);
1150         $$.intermNode = parseContext.intermediate.growAggregate(0, initNode, $3.loc);
1151     }
1152 
1153 // Grammar Note:  No 'enum', or 'typedef'.
1154 
1155 fully_specified_type
1156     : type_specifier {
1157         $$ = $1;
1158 
1159         parseContext.globalQualifierTypeCheck($1.loc, $1.qualifier, $$);
1160         if ($1.arraySizes) {
1161             parseContext.profileRequires($1.loc, ENoProfile, 120, E_GL_3DL_array_objects, "arrayed type");
1162             parseContext.profileRequires($1.loc, EEsProfile, 300, 0, "arrayed type");
1163         }
1164         parseContext.precisionQualifierCheck($$.loc, $$.basicType, $$.qualifier);
1165     }
1166     | type_qualifier type_specifier  {
1167         parseContext.globalQualifierFixCheck($1.loc, $1.qualifier);
1168         parseContext.globalQualifierTypeCheck($1.loc, $1.qualifier, $2);
1169 
1170         if ($2.arraySizes) {
1171             parseContext.profileRequires($2.loc, ENoProfile, 120, E_GL_3DL_array_objects, "arrayed type");
1172             parseContext.profileRequires($2.loc, EEsProfile, 300, 0, "arrayed type");
1173         }
1174 
1175         if ($2.arraySizes && parseContext.arrayQualifierError($2.loc, $1.qualifier))
1176             $2.arraySizes = nullptr;
1177 
1178         parseContext.checkNoShaderLayouts($2.loc, $1.shaderQualifiers);
1179         $2.shaderQualifiers.merge($1.shaderQualifiers);
1180         parseContext.mergeQualifiers($2.loc, $2.qualifier, $1.qualifier, true);
1181         parseContext.precisionQualifierCheck($2.loc, $2.basicType, $2.qualifier);
1182 
1183         $$ = $2;
1184 
1185         if (! $$.qualifier.isInterpolation() &&
1186             ((parseContext.language == EShLangVertex   && $$.qualifier.storage == EvqVaryingOut) ||
1187              (parseContext.language == EShLangFragment && $$.qualifier.storage == EvqVaryingIn)))
1188             $$.qualifier.smooth = true;
1189     }
1190     ;
1191 
1192 invariant_qualifier
1193     : INVARIANT {
1194         parseContext.globalCheck($1.loc, "invariant");
1195         parseContext.profileRequires($$.loc, ENoProfile, 120, 0, "invariant");
1196         $$.init($1.loc);
1197         $$.qualifier.invariant = true;
1198     }
1199     ;
1200 
1201 interpolation_qualifier
1202     : SMOOTH {
1203         parseContext.globalCheck($1.loc, "smooth");
1204         parseContext.profileRequires($1.loc, ENoProfile, 130, 0, "smooth");
1205         parseContext.profileRequires($1.loc, EEsProfile, 300, 0, "smooth");
1206         $$.init($1.loc);
1207         $$.qualifier.smooth = true;
1208     }
1209     | FLAT {
1210         parseContext.globalCheck($1.loc, "flat");
1211         parseContext.profileRequires($1.loc, ENoProfile, 130, 0, "flat");
1212         parseContext.profileRequires($1.loc, EEsProfile, 300, 0, "flat");
1213         $$.init($1.loc);
1214         $$.qualifier.flat = true;
1215     }
1216 
1217     | NOPERSPECTIVE {
1218         parseContext.globalCheck($1.loc, "noperspective");
1219         parseContext.profileRequires($1.loc, EEsProfile, 0, E_GL_NV_shader_noperspective_interpolation, "noperspective");
1220         parseContext.profileRequires($1.loc, ENoProfile, 130, 0, "noperspective");
1221         $$.init($1.loc);
1222         $$.qualifier.nopersp = true;
1223     }
1224     | EXPLICITINTERPAMD {
1225         parseContext.globalCheck($1.loc, "__explicitInterpAMD");
1226         parseContext.profileRequires($1.loc, ECoreProfile, 450, E_GL_AMD_shader_explicit_vertex_parameter, "explicit interpolation");
1227         parseContext.profileRequires($1.loc, ECompatibilityProfile, 450, E_GL_AMD_shader_explicit_vertex_parameter, "explicit interpolation");
1228         $$.init($1.loc);
1229         $$.qualifier.explicitInterp = true;
1230     }
1231     | PERVERTEXNV {
1232         parseContext.globalCheck($1.loc, "pervertexNV");
1233         parseContext.profileRequires($1.loc, ECoreProfile, 0, E_GL_NV_fragment_shader_barycentric, "fragment shader barycentric");
1234         parseContext.profileRequires($1.loc, ECompatibilityProfile, 0, E_GL_NV_fragment_shader_barycentric, "fragment shader barycentric");
1235         parseContext.profileRequires($1.loc, EEsProfile, 0, E_GL_NV_fragment_shader_barycentric, "fragment shader barycentric");
1236         $$.init($1.loc);
1237         $$.qualifier.pervertexNV = true;
1238     }
1239     | PERPRIMITIVENV {
1240         // No need for profile version or extension check. Shader stage already checks both.
1241         parseContext.globalCheck($1.loc, "perprimitiveNV");
1242         parseContext.requireStage($1.loc, (EShLanguageMask)(EShLangFragmentMask | EShLangMeshNVMask), "perprimitiveNV");
1243         // Fragment shader stage doesn't check for extension. So we explicitly add below extension check.
1244         if (parseContext.language == EShLangFragment)
1245             parseContext.requireExtensions($1.loc, 1, &E_GL_NV_mesh_shader, "perprimitiveNV");
1246         $$.init($1.loc);
1247         $$.qualifier.perPrimitiveNV = true;
1248     }
1249     | PERVIEWNV {
1250         // No need for profile version or extension check. Shader stage already checks both.
1251         parseContext.globalCheck($1.loc, "perviewNV");
1252         parseContext.requireStage($1.loc, EShLangMeshNV, "perviewNV");
1253         $$.init($1.loc);
1254         $$.qualifier.perViewNV = true;
1255     }
1256     | PERTASKNV {
1257         // No need for profile version or extension check. Shader stage already checks both.
1258         parseContext.globalCheck($1.loc, "taskNV");
1259         parseContext.requireStage($1.loc, (EShLanguageMask)(EShLangTaskNVMask | EShLangMeshNVMask), "taskNV");
1260         $$.init($1.loc);
1261         $$.qualifier.perTaskNV = true;
1262     }
1263 
1264     ;
1265 
1266 layout_qualifier
1267     : LAYOUT LEFT_PAREN layout_qualifier_id_list RIGHT_PAREN {
1268         $$ = $3;
1269     }
1270     ;
1271 
1272 layout_qualifier_id_list
1273     : layout_qualifier_id {
1274         $$ = $1;
1275     }
1276     | layout_qualifier_id_list COMMA layout_qualifier_id {
1277         $$ = $1;
1278         $$.shaderQualifiers.merge($3.shaderQualifiers);
1279         parseContext.mergeObjectLayoutQualifiers($$.qualifier, $3.qualifier, false);
1280     }
1281 
1282 layout_qualifier_id
1283     : IDENTIFIER {
1284         $$.init($1.loc);
1285         parseContext.setLayoutQualifier($1.loc, $$, *$1.string);
1286     }
1287     | IDENTIFIER EQUAL constant_expression {
1288         $$.init($1.loc);
1289         parseContext.setLayoutQualifier($1.loc, $$, *$1.string, $3);
1290     }
1291     | SHARED { // because "shared" is both an identifier and a keyword
1292         $$.init($1.loc);
1293         TString strShared("shared");
1294         parseContext.setLayoutQualifier($1.loc, $$, strShared);
1295     }
1296     ;
1297 
1298 
1299 precise_qualifier
1300     : PRECISE {
1301         parseContext.profileRequires($$.loc, ECoreProfile | ECompatibilityProfile, 400, E_GL_ARB_gpu_shader5, "precise");
1302         parseContext.profileRequires($1.loc, EEsProfile, 320, Num_AEP_gpu_shader5, AEP_gpu_shader5, "precise");
1303         $$.init($1.loc);
1304         $$.qualifier.noContraction = true;
1305     }
1306     ;
1307 
1308 
1309 type_qualifier
1310     : single_type_qualifier {
1311         $$ = $1;
1312     }
1313     | type_qualifier single_type_qualifier {
1314         $$ = $1;
1315         if ($$.basicType == EbtVoid)
1316             $$.basicType = $2.basicType;
1317 
1318         $$.shaderQualifiers.merge($2.shaderQualifiers);
1319         parseContext.mergeQualifiers($$.loc, $$.qualifier, $2.qualifier, false);
1320     }
1321     ;
1322 
1323 single_type_qualifier
1324     : storage_qualifier {
1325         $$ = $1;
1326     }
1327     | layout_qualifier {
1328         $$ = $1;
1329     }
1330     | precision_qualifier {
1331         parseContext.checkPrecisionQualifier($1.loc, $1.qualifier.precision);
1332         $$ = $1;
1333     }
1334     | interpolation_qualifier {
1335         // allow inheritance of storage qualifier from block declaration
1336         $$ = $1;
1337     }
1338     | invariant_qualifier {
1339         // allow inheritance of storage qualifier from block declaration
1340         $$ = $1;
1341     }
1342 
1343     | precise_qualifier {
1344         // allow inheritance of storage qualifier from block declaration
1345         $$ = $1;
1346     }
1347     | non_uniform_qualifier {
1348         $$ = $1;
1349     }
1350 
1351     ;
1352 
1353 storage_qualifier
1354     : CONST {
1355         $$.init($1.loc);
1356         $$.qualifier.storage = EvqConst;  // will later turn into EvqConstReadOnly, if the initializer is not constant
1357     }
1358     | INOUT {
1359         parseContext.globalCheck($1.loc, "inout");
1360         $$.init($1.loc);
1361         $$.qualifier.storage = EvqInOut;
1362     }
1363     | IN {
1364         parseContext.globalCheck($1.loc, "in");
1365         $$.init($1.loc);
1366         // whether this is a parameter "in" or a pipeline "in" will get sorted out a bit later
1367         $$.qualifier.storage = EvqIn;
1368     }
1369     | OUT {
1370         parseContext.globalCheck($1.loc, "out");
1371         $$.init($1.loc);
1372         // whether this is a parameter "out" or a pipeline "out" will get sorted out a bit later
1373         $$.qualifier.storage = EvqOut;
1374     }
1375     | CENTROID {
1376         parseContext.profileRequires($1.loc, ENoProfile, 120, 0, "centroid");
1377         parseContext.profileRequires($1.loc, EEsProfile, 300, 0, "centroid");
1378         parseContext.globalCheck($1.loc, "centroid");
1379         $$.init($1.loc);
1380         $$.qualifier.centroid = true;
1381     }
1382     | UNIFORM {
1383         parseContext.globalCheck($1.loc, "uniform");
1384         $$.init($1.loc);
1385         $$.qualifier.storage = EvqUniform;
1386     }
1387     | SHARED {
1388         parseContext.globalCheck($1.loc, "shared");
1389         parseContext.profileRequires($1.loc, ECoreProfile | ECompatibilityProfile, 430, E_GL_ARB_compute_shader, "shared");
1390         parseContext.profileRequires($1.loc, EEsProfile, 310, 0, "shared");
1391         parseContext.requireStage($1.loc, (EShLanguageMask)(EShLangComputeMask | EShLangMeshNVMask | EShLangTaskNVMask), "shared");
1392         $$.init($1.loc);
1393         $$.qualifier.storage = EvqShared;
1394     }
1395     | BUFFER {
1396         parseContext.globalCheck($1.loc, "buffer");
1397         $$.init($1.loc);
1398         $$.qualifier.storage = EvqBuffer;
1399     }
1400 
1401     | ATTRIBUTE {
1402         parseContext.requireStage($1.loc, EShLangVertex, "attribute");
1403         parseContext.checkDeprecated($1.loc, ECoreProfile, 130, "attribute");
1404         parseContext.checkDeprecated($1.loc, ENoProfile, 130, "attribute");
1405         parseContext.requireNotRemoved($1.loc, ECoreProfile, 420, "attribute");
1406         parseContext.requireNotRemoved($1.loc, EEsProfile, 300, "attribute");
1407 
1408         parseContext.globalCheck($1.loc, "attribute");
1409 
1410         $$.init($1.loc);
1411         $$.qualifier.storage = EvqVaryingIn;
1412     }
1413     | VARYING {
1414         parseContext.checkDeprecated($1.loc, ENoProfile, 130, "varying");
1415         parseContext.checkDeprecated($1.loc, ECoreProfile, 130, "varying");
1416         parseContext.requireNotRemoved($1.loc, ECoreProfile, 420, "varying");
1417         parseContext.requireNotRemoved($1.loc, EEsProfile, 300, "varying");
1418 
1419         parseContext.globalCheck($1.loc, "varying");
1420 
1421         $$.init($1.loc);
1422         if (parseContext.language == EShLangVertex)
1423             $$.qualifier.storage = EvqVaryingOut;
1424         else
1425             $$.qualifier.storage = EvqVaryingIn;
1426     }
1427     | PATCH {
1428         parseContext.globalCheck($1.loc, "patch");
1429         parseContext.requireStage($1.loc, (EShLanguageMask)(EShLangTessControlMask | EShLangTessEvaluationMask), "patch");
1430         $$.init($1.loc);
1431         $$.qualifier.patch = true;
1432     }
1433     | SAMPLE {
1434         parseContext.globalCheck($1.loc, "sample");
1435         $$.init($1.loc);
1436         $$.qualifier.sample = true;
1437     }
1438     | HITATTRNV {
1439         parseContext.globalCheck($1.loc, "hitAttributeNV");
1440         parseContext.requireStage($1.loc, (EShLanguageMask)(EShLangIntersectMask | EShLangClosestHitMask
1441             | EShLangAnyHitMask), "hitAttributeNV");
1442         parseContext.profileRequires($1.loc, ECoreProfile, 460, E_GL_NV_ray_tracing, "hitAttributeNV");
1443         $$.init($1.loc);
1444         $$.qualifier.storage = EvqHitAttr;
1445     }
1446     | HITATTREXT {
1447         parseContext.globalCheck($1.loc, "hitAttributeEXT");
1448         parseContext.requireStage($1.loc, (EShLanguageMask)(EShLangIntersectMask | EShLangClosestHitMask
1449             | EShLangAnyHitMask), "hitAttributeEXT");
1450         parseContext.profileRequires($1.loc, ECoreProfile, 460, E_GL_EXT_ray_tracing, "hitAttributeNV");
1451         $$.init($1.loc);
1452         $$.qualifier.storage = EvqHitAttr;
1453     }
1454     | PAYLOADNV {
1455         parseContext.globalCheck($1.loc, "rayPayloadNV");
1456         parseContext.requireStage($1.loc, (EShLanguageMask)(EShLangRayGenMask | EShLangClosestHitMask |
1457             EShLangAnyHitMask | EShLangMissMask), "rayPayloadNV");
1458         parseContext.profileRequires($1.loc, ECoreProfile, 460, E_GL_NV_ray_tracing, "rayPayloadNV");
1459         $$.init($1.loc);
1460         $$.qualifier.storage = EvqPayload;
1461     }
1462     | PAYLOADEXT {
1463         parseContext.globalCheck($1.loc, "rayPayloadEXT");
1464         parseContext.requireStage($1.loc, (EShLanguageMask)(EShLangRayGenMask | EShLangClosestHitMask |
1465             EShLangAnyHitMask | EShLangMissMask), "rayPayloadEXT");
1466         parseContext.profileRequires($1.loc, ECoreProfile, 460, E_GL_EXT_ray_tracing, "rayPayloadEXT");
1467         $$.init($1.loc);
1468         $$.qualifier.storage = EvqPayload;
1469     }
1470     | PAYLOADINNV {
1471         parseContext.globalCheck($1.loc, "rayPayloadInNV");
1472         parseContext.requireStage($1.loc, (EShLanguageMask)(EShLangClosestHitMask |
1473             EShLangAnyHitMask | EShLangMissMask), "rayPayloadInNV");
1474         parseContext.profileRequires($1.loc, ECoreProfile, 460, E_GL_NV_ray_tracing, "rayPayloadInNV");
1475         $$.init($1.loc);
1476         $$.qualifier.storage = EvqPayloadIn;
1477     }
1478     | PAYLOADINEXT {
1479         parseContext.globalCheck($1.loc, "rayPayloadInEXT");
1480         parseContext.requireStage($1.loc, (EShLanguageMask)(EShLangClosestHitMask |
1481             EShLangAnyHitMask | EShLangMissMask), "rayPayloadInEXT");
1482         parseContext.profileRequires($1.loc, ECoreProfile, 460, E_GL_EXT_ray_tracing, "rayPayloadInEXT");
1483         $$.init($1.loc);
1484         $$.qualifier.storage = EvqPayloadIn;
1485     }
1486     | CALLDATANV {
1487         parseContext.globalCheck($1.loc, "callableDataNV");
1488         parseContext.requireStage($1.loc, (EShLanguageMask)(EShLangRayGenMask |
1489             EShLangClosestHitMask | EShLangMissMask | EShLangCallableMask), "callableDataNV");
1490         parseContext.profileRequires($1.loc, ECoreProfile, 460, E_GL_NV_ray_tracing, "callableDataNV");
1491         $$.init($1.loc);
1492         $$.qualifier.storage = EvqCallableData;
1493     }
1494     | CALLDATAEXT {
1495         parseContext.globalCheck($1.loc, "callableDataEXT");
1496         parseContext.requireStage($1.loc, (EShLanguageMask)(EShLangRayGenMask |
1497             EShLangClosestHitMask | EShLangMissMask | EShLangCallableMask), "callableDataEXT");
1498         parseContext.profileRequires($1.loc, ECoreProfile, 460, E_GL_EXT_ray_tracing, "callableDataEXT");
1499         $$.init($1.loc);
1500         $$.qualifier.storage = EvqCallableData;
1501     }
1502     | CALLDATAINNV {
1503         parseContext.globalCheck($1.loc, "callableDataInNV");
1504         parseContext.requireStage($1.loc, (EShLanguageMask)(EShLangCallableMask), "callableDataInNV");
1505         parseContext.profileRequires($1.loc, ECoreProfile, 460, E_GL_NV_ray_tracing, "callableDataInNV");
1506         $$.init($1.loc);
1507         $$.qualifier.storage = EvqCallableDataIn;
1508     }
1509     | CALLDATAINEXT {
1510         parseContext.globalCheck($1.loc, "callableDataInEXT");
1511         parseContext.requireStage($1.loc, (EShLanguageMask)(EShLangCallableMask), "callableDataInEXT");
1512         parseContext.profileRequires($1.loc, ECoreProfile, 460, E_GL_EXT_ray_tracing, "callableDataInEXT");
1513         $$.init($1.loc);
1514         $$.qualifier.storage = EvqCallableDataIn;
1515     }
1516     | COHERENT {
1517         $$.init($1.loc);
1518         $$.qualifier.coherent = true;
1519     }
1520     | DEVICECOHERENT {
1521         $$.init($1.loc);
1522         parseContext.requireExtensions($1.loc, 1, &E_GL_KHR_memory_scope_semantics, "devicecoherent");
1523         $$.qualifier.devicecoherent = true;
1524     }
1525     | QUEUEFAMILYCOHERENT {
1526         $$.init($1.loc);
1527         parseContext.requireExtensions($1.loc, 1, &E_GL_KHR_memory_scope_semantics, "queuefamilycoherent");
1528         $$.qualifier.queuefamilycoherent = true;
1529     }
1530     | WORKGROUPCOHERENT {
1531         $$.init($1.loc);
1532         parseContext.requireExtensions($1.loc, 1, &E_GL_KHR_memory_scope_semantics, "workgroupcoherent");
1533         $$.qualifier.workgroupcoherent = true;
1534     }
1535     | SUBGROUPCOHERENT {
1536         $$.init($1.loc);
1537         parseContext.requireExtensions($1.loc, 1, &E_GL_KHR_memory_scope_semantics, "subgroupcoherent");
1538         $$.qualifier.subgroupcoherent = true;
1539     }
1540     | NONPRIVATE {
1541         $$.init($1.loc);
1542         parseContext.requireExtensions($1.loc, 1, &E_GL_KHR_memory_scope_semantics, "nonprivate");
1543         $$.qualifier.nonprivate = true;
1544     }
1545     | SHADERCALLCOHERENT {
1546         $$.init($1.loc);
1547         parseContext.requireExtensions($1.loc, 1, &E_GL_EXT_ray_tracing, "shadercallcoherent");
1548         $$.qualifier.shadercallcoherent = true;
1549     }
1550     | VOLATILE {
1551         $$.init($1.loc);
1552         $$.qualifier.volatil = true;
1553     }
1554     | RESTRICT {
1555         $$.init($1.loc);
1556         $$.qualifier.restrict = true;
1557     }
1558     | READONLY {
1559         $$.init($1.loc);
1560         $$.qualifier.readonly = true;
1561     }
1562     | WRITEONLY {
1563         $$.init($1.loc);
1564         $$.qualifier.writeonly = true;
1565     }
1566     | SUBROUTINE {
1567         parseContext.spvRemoved($1.loc, "subroutine");
1568         parseContext.globalCheck($1.loc, "subroutine");
1569         parseContext.unimplemented($1.loc, "subroutine");
1570         $$.init($1.loc);
1571     }
1572     | SUBROUTINE LEFT_PAREN type_name_list RIGHT_PAREN {
1573         parseContext.spvRemoved($1.loc, "subroutine");
1574         parseContext.globalCheck($1.loc, "subroutine");
1575         parseContext.unimplemented($1.loc, "subroutine");
1576         $$.init($1.loc);
1577     }
1578 
1579     ;
1580 
1581 
1582 non_uniform_qualifier
1583     : NONUNIFORM {
1584         $$.init($1.loc);
1585         $$.qualifier.nonUniform = true;
1586     }
1587     ;
1588 
1589 type_name_list
1590     : IDENTIFIER {
1591         // TODO
1592     }
1593     | type_name_list COMMA IDENTIFIER {
1594         // TODO: 4.0 semantics: subroutines
1595         // 1) make sure each identifier is a type declared earlier with SUBROUTINE
1596         // 2) save all of the identifiers for future comparison with the declared function
1597     }
1598     ;
1599 
1600 
1601 type_specifier
1602     : type_specifier_nonarray type_parameter_specifier_opt {
1603         $$ = $1;
1604         $$.qualifier.precision = parseContext.getDefaultPrecision($$);
1605         $$.typeParameters = $2;
1606     }
1607     | type_specifier_nonarray type_parameter_specifier_opt array_specifier {
1608         parseContext.arrayOfArrayVersionCheck($3.loc, $3.arraySizes);
1609         $$ = $1;
1610         $$.qualifier.precision = parseContext.getDefaultPrecision($$);
1611         $$.typeParameters = $2;
1612         $$.arraySizes = $3.arraySizes;
1613     }
1614     ;
1615 
1616 array_specifier
1617     : LEFT_BRACKET RIGHT_BRACKET {
1618         $$.loc = $1.loc;
1619         $$.arraySizes = new TArraySizes;
1620         $$.arraySizes->addInnerSize();
1621     }
1622     | LEFT_BRACKET conditional_expression RIGHT_BRACKET {
1623         $$.loc = $1.loc;
1624         $$.arraySizes = new TArraySizes;
1625 
1626         TArraySize size;
1627         parseContext.arraySizeCheck($2->getLoc(), $2, size, "array size");
1628         $$.arraySizes->addInnerSize(size);
1629     }
1630     | array_specifier LEFT_BRACKET RIGHT_BRACKET {
1631         $$ = $1;
1632         $$.arraySizes->addInnerSize();
1633     }
1634     | array_specifier LEFT_BRACKET conditional_expression RIGHT_BRACKET {
1635         $$ = $1;
1636 
1637         TArraySize size;
1638         parseContext.arraySizeCheck($3->getLoc(), $3, size, "array size");
1639         $$.arraySizes->addInnerSize(size);
1640     }
1641     ;
1642 
1643 type_parameter_specifier_opt
1644     : type_parameter_specifier {
1645         $$ = $1;
1646     }
1647     | /* May be null */ {
1648         $$ = 0;
1649     }
1650     ;
1651 
1652 type_parameter_specifier
1653     : LEFT_ANGLE type_parameter_specifier_list RIGHT_ANGLE {
1654         $$ = $2;
1655     }
1656     ;
1657 
1658 type_parameter_specifier_list
1659     : unary_expression {
1660         $$ = new TArraySizes;
1661 
1662         TArraySize size;
1663         parseContext.arraySizeCheck($1->getLoc(), $1, size, "type parameter");
1664         $$->addInnerSize(size);
1665     }
1666     | type_parameter_specifier_list COMMA unary_expression {
1667         $$ = $1;
1668 
1669         TArraySize size;
1670         parseContext.arraySizeCheck($3->getLoc(), $3, size, "type parameter");
1671         $$->addInnerSize(size);
1672     }
1673     ;
1674 
1675 type_specifier_nonarray
1676     : VOID {
1677         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
1678         $$.basicType = EbtVoid;
1679     }
1680     | FLOAT {
1681         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
1682         $$.basicType = EbtFloat;
1683     }
1684     | INT {
1685         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
1686         $$.basicType = EbtInt;
1687     }
1688     | UINT {
1689         parseContext.fullIntegerCheck($1.loc, "unsigned integer");
1690         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
1691         $$.basicType = EbtUint;
1692     }
1693     | BOOL {
1694         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
1695         $$.basicType = EbtBool;
1696     }
1697     | VEC2 {
1698         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
1699         $$.basicType = EbtFloat;
1700         $$.setVector(2);
1701     }
1702     | VEC3 {
1703         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
1704         $$.basicType = EbtFloat;
1705         $$.setVector(3);
1706     }
1707     | VEC4 {
1708         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
1709         $$.basicType = EbtFloat;
1710         $$.setVector(4);
1711     }
1712     | BVEC2 {
1713         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
1714         $$.basicType = EbtBool;
1715         $$.setVector(2);
1716     }
1717     | BVEC3 {
1718         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
1719         $$.basicType = EbtBool;
1720         $$.setVector(3);
1721     }
1722     | BVEC4 {
1723         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
1724         $$.basicType = EbtBool;
1725         $$.setVector(4);
1726     }
1727     | IVEC2 {
1728         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
1729         $$.basicType = EbtInt;
1730         $$.setVector(2);
1731     }
1732     | IVEC3 {
1733         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
1734         $$.basicType = EbtInt;
1735         $$.setVector(3);
1736     }
1737     | IVEC4 {
1738         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
1739         $$.basicType = EbtInt;
1740         $$.setVector(4);
1741     }
1742     | UVEC2 {
1743         parseContext.fullIntegerCheck($1.loc, "unsigned integer vector");
1744         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
1745         $$.basicType = EbtUint;
1746         $$.setVector(2);
1747     }
1748     | UVEC3 {
1749         parseContext.fullIntegerCheck($1.loc, "unsigned integer vector");
1750         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
1751         $$.basicType = EbtUint;
1752         $$.setVector(3);
1753     }
1754     | UVEC4 {
1755         parseContext.fullIntegerCheck($1.loc, "unsigned integer vector");
1756         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
1757         $$.basicType = EbtUint;
1758         $$.setVector(4);
1759     }
1760     | MAT2 {
1761         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
1762         $$.basicType = EbtFloat;
1763         $$.setMatrix(2, 2);
1764     }
1765     | MAT3 {
1766         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
1767         $$.basicType = EbtFloat;
1768         $$.setMatrix(3, 3);
1769     }
1770     | MAT4 {
1771         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
1772         $$.basicType = EbtFloat;
1773         $$.setMatrix(4, 4);
1774     }
1775     | MAT2X2 {
1776         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
1777         $$.basicType = EbtFloat;
1778         $$.setMatrix(2, 2);
1779     }
1780     | MAT2X3 {
1781         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
1782         $$.basicType = EbtFloat;
1783         $$.setMatrix(2, 3);
1784     }
1785     | MAT2X4 {
1786         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
1787         $$.basicType = EbtFloat;
1788         $$.setMatrix(2, 4);
1789     }
1790     | MAT3X2 {
1791         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
1792         $$.basicType = EbtFloat;
1793         $$.setMatrix(3, 2);
1794     }
1795     | MAT3X3 {
1796         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
1797         $$.basicType = EbtFloat;
1798         $$.setMatrix(3, 3);
1799     }
1800     | MAT3X4 {
1801         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
1802         $$.basicType = EbtFloat;
1803         $$.setMatrix(3, 4);
1804     }
1805     | MAT4X2 {
1806         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
1807         $$.basicType = EbtFloat;
1808         $$.setMatrix(4, 2);
1809     }
1810     | MAT4X3 {
1811         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
1812         $$.basicType = EbtFloat;
1813         $$.setMatrix(4, 3);
1814     }
1815     | MAT4X4 {
1816         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
1817         $$.basicType = EbtFloat;
1818         $$.setMatrix(4, 4);
1819     }
1820 
1821     | DOUBLE {
1822         parseContext.requireProfile($1.loc, ECoreProfile | ECompatibilityProfile, "double");
1823         if (! parseContext.symbolTable.atBuiltInLevel())
1824             parseContext.doubleCheck($1.loc, "double");
1825         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
1826         $$.basicType = EbtDouble;
1827     }
1828     | FLOAT16_T {
1829         parseContext.float16ScalarVectorCheck($1.loc, "float16_t", parseContext.symbolTable.atBuiltInLevel());
1830         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
1831         $$.basicType = EbtFloat16;
1832     }
1833     | FLOAT32_T {
1834         parseContext.explicitFloat32Check($1.loc, "float32_t", parseContext.symbolTable.atBuiltInLevel());
1835         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
1836         $$.basicType = EbtFloat;
1837     }
1838     | FLOAT64_T {
1839         parseContext.explicitFloat64Check($1.loc, "float64_t", parseContext.symbolTable.atBuiltInLevel());
1840         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
1841         $$.basicType = EbtDouble;
1842     }
1843     | INT8_T {
1844         parseContext.int8ScalarVectorCheck($1.loc, "8-bit signed integer", parseContext.symbolTable.atBuiltInLevel());
1845         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
1846         $$.basicType = EbtInt8;
1847     }
1848     | UINT8_T {
1849         parseContext.int8ScalarVectorCheck($1.loc, "8-bit unsigned integer", parseContext.symbolTable.atBuiltInLevel());
1850         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
1851         $$.basicType = EbtUint8;
1852     }
1853     | INT16_T {
1854         parseContext.int16ScalarVectorCheck($1.loc, "16-bit signed integer", parseContext.symbolTable.atBuiltInLevel());
1855         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
1856         $$.basicType = EbtInt16;
1857     }
1858     | UINT16_T {
1859         parseContext.int16ScalarVectorCheck($1.loc, "16-bit unsigned integer", parseContext.symbolTable.atBuiltInLevel());
1860         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
1861         $$.basicType = EbtUint16;
1862     }
1863     | INT32_T {
1864         parseContext.explicitInt32Check($1.loc, "32-bit signed integer", parseContext.symbolTable.atBuiltInLevel());
1865         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
1866         $$.basicType = EbtInt;
1867     }
1868     | UINT32_T {
1869         parseContext.explicitInt32Check($1.loc, "32-bit unsigned integer", parseContext.symbolTable.atBuiltInLevel());
1870         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
1871         $$.basicType = EbtUint;
1872     }
1873     | INT64_T {
1874         parseContext.int64Check($1.loc, "64-bit integer", parseContext.symbolTable.atBuiltInLevel());
1875         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
1876         $$.basicType = EbtInt64;
1877     }
1878     | UINT64_T {
1879         parseContext.int64Check($1.loc, "64-bit unsigned integer", parseContext.symbolTable.atBuiltInLevel());
1880         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
1881         $$.basicType = EbtUint64;
1882     }
1883     | DVEC2 {
1884         parseContext.requireProfile($1.loc, ECoreProfile | ECompatibilityProfile, "double vector");
1885         if (! parseContext.symbolTable.atBuiltInLevel())
1886             parseContext.doubleCheck($1.loc, "double vector");
1887         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
1888         $$.basicType = EbtDouble;
1889         $$.setVector(2);
1890     }
1891     | DVEC3 {
1892         parseContext.requireProfile($1.loc, ECoreProfile | ECompatibilityProfile, "double vector");
1893         if (! parseContext.symbolTable.atBuiltInLevel())
1894             parseContext.doubleCheck($1.loc, "double vector");
1895         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
1896         $$.basicType = EbtDouble;
1897         $$.setVector(3);
1898     }
1899     | DVEC4 {
1900         parseContext.requireProfile($1.loc, ECoreProfile | ECompatibilityProfile, "double vector");
1901         if (! parseContext.symbolTable.atBuiltInLevel())
1902             parseContext.doubleCheck($1.loc, "double vector");
1903         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
1904         $$.basicType = EbtDouble;
1905         $$.setVector(4);
1906     }
1907     | F16VEC2 {
1908         parseContext.float16ScalarVectorCheck($1.loc, "half float vector", parseContext.symbolTable.atBuiltInLevel());
1909         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
1910         $$.basicType = EbtFloat16;
1911         $$.setVector(2);
1912     }
1913     | F16VEC3 {
1914         parseContext.float16ScalarVectorCheck($1.loc, "half float vector", parseContext.symbolTable.atBuiltInLevel());
1915         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
1916         $$.basicType = EbtFloat16;
1917         $$.setVector(3);
1918     }
1919     | F16VEC4 {
1920         parseContext.float16ScalarVectorCheck($1.loc, "half float vector", parseContext.symbolTable.atBuiltInLevel());
1921         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
1922         $$.basicType = EbtFloat16;
1923         $$.setVector(4);
1924     }
1925     | F32VEC2 {
1926         parseContext.explicitFloat32Check($1.loc, "float32_t vector", parseContext.symbolTable.atBuiltInLevel());
1927         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
1928         $$.basicType = EbtFloat;
1929         $$.setVector(2);
1930     }
1931     | F32VEC3 {
1932         parseContext.explicitFloat32Check($1.loc, "float32_t vector", parseContext.symbolTable.atBuiltInLevel());
1933         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
1934         $$.basicType = EbtFloat;
1935         $$.setVector(3);
1936     }
1937     | F32VEC4 {
1938         parseContext.explicitFloat32Check($1.loc, "float32_t vector", parseContext.symbolTable.atBuiltInLevel());
1939         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
1940         $$.basicType = EbtFloat;
1941         $$.setVector(4);
1942     }
1943     | F64VEC2 {
1944         parseContext.explicitFloat64Check($1.loc, "float64_t vector", parseContext.symbolTable.atBuiltInLevel());
1945         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
1946         $$.basicType = EbtDouble;
1947         $$.setVector(2);
1948     }
1949     | F64VEC3 {
1950         parseContext.explicitFloat64Check($1.loc, "float64_t vector", parseContext.symbolTable.atBuiltInLevel());
1951         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
1952         $$.basicType = EbtDouble;
1953         $$.setVector(3);
1954     }
1955     | F64VEC4 {
1956         parseContext.explicitFloat64Check($1.loc, "float64_t vector", parseContext.symbolTable.atBuiltInLevel());
1957         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
1958         $$.basicType = EbtDouble;
1959         $$.setVector(4);
1960     }
1961     | I8VEC2 {
1962         parseContext.int8ScalarVectorCheck($1.loc, "8-bit signed integer vector", parseContext.symbolTable.atBuiltInLevel());
1963         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
1964         $$.basicType = EbtInt8;
1965         $$.setVector(2);
1966     }
1967     | I8VEC3 {
1968         parseContext.int8ScalarVectorCheck($1.loc, "8-bit signed integer vector", parseContext.symbolTable.atBuiltInLevel());
1969         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
1970         $$.basicType = EbtInt8;
1971         $$.setVector(3);
1972     }
1973     | I8VEC4 {
1974         parseContext.int8ScalarVectorCheck($1.loc, "8-bit signed integer vector", parseContext.symbolTable.atBuiltInLevel());
1975         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
1976         $$.basicType = EbtInt8;
1977         $$.setVector(4);
1978     }
1979     | I16VEC2 {
1980         parseContext.int16ScalarVectorCheck($1.loc, "16-bit signed integer vector", parseContext.symbolTable.atBuiltInLevel());
1981         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
1982         $$.basicType = EbtInt16;
1983         $$.setVector(2);
1984     }
1985     | I16VEC3 {
1986         parseContext.int16ScalarVectorCheck($1.loc, "16-bit signed integer vector", parseContext.symbolTable.atBuiltInLevel());
1987         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
1988         $$.basicType = EbtInt16;
1989         $$.setVector(3);
1990     }
1991     | I16VEC4 {
1992         parseContext.int16ScalarVectorCheck($1.loc, "16-bit signed integer vector", parseContext.symbolTable.atBuiltInLevel());
1993         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
1994         $$.basicType = EbtInt16;
1995         $$.setVector(4);
1996     }
1997     | I32VEC2 {
1998         parseContext.explicitInt32Check($1.loc, "32-bit signed integer vector", parseContext.symbolTable.atBuiltInLevel());
1999         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2000         $$.basicType = EbtInt;
2001         $$.setVector(2);
2002     }
2003     | I32VEC3 {
2004         parseContext.explicitInt32Check($1.loc, "32-bit signed integer vector", parseContext.symbolTable.atBuiltInLevel());
2005         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2006         $$.basicType = EbtInt;
2007         $$.setVector(3);
2008     }
2009     | I32VEC4 {
2010         parseContext.explicitInt32Check($1.loc, "32-bit signed integer vector", parseContext.symbolTable.atBuiltInLevel());
2011         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2012         $$.basicType = EbtInt;
2013         $$.setVector(4);
2014     }
2015     | I64VEC2 {
2016         parseContext.int64Check($1.loc, "64-bit integer vector", parseContext.symbolTable.atBuiltInLevel());
2017         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2018         $$.basicType = EbtInt64;
2019         $$.setVector(2);
2020     }
2021     | I64VEC3 {
2022         parseContext.int64Check($1.loc, "64-bit integer vector", parseContext.symbolTable.atBuiltInLevel());
2023         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2024         $$.basicType = EbtInt64;
2025         $$.setVector(3);
2026     }
2027     | I64VEC4 {
2028         parseContext.int64Check($1.loc, "64-bit integer vector", parseContext.symbolTable.atBuiltInLevel());
2029         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2030         $$.basicType = EbtInt64;
2031         $$.setVector(4);
2032     }
2033     | U8VEC2 {
2034         parseContext.int8ScalarVectorCheck($1.loc, "8-bit unsigned integer vector", parseContext.symbolTable.atBuiltInLevel());
2035         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2036         $$.basicType = EbtUint8;
2037         $$.setVector(2);
2038     }
2039     | U8VEC3 {
2040         parseContext.int8ScalarVectorCheck($1.loc, "8-bit unsigned integer vector", parseContext.symbolTable.atBuiltInLevel());
2041         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2042         $$.basicType = EbtUint8;
2043         $$.setVector(3);
2044     }
2045     | U8VEC4 {
2046         parseContext.int8ScalarVectorCheck($1.loc, "8-bit unsigned integer vector", parseContext.symbolTable.atBuiltInLevel());
2047         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2048         $$.basicType = EbtUint8;
2049         $$.setVector(4);
2050     }
2051     | U16VEC2 {
2052         parseContext.int16ScalarVectorCheck($1.loc, "16-bit unsigned integer vector", parseContext.symbolTable.atBuiltInLevel());
2053         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2054         $$.basicType = EbtUint16;
2055         $$.setVector(2);
2056     }
2057     | U16VEC3 {
2058         parseContext.int16ScalarVectorCheck($1.loc, "16-bit unsigned integer vector", parseContext.symbolTable.atBuiltInLevel());
2059         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2060         $$.basicType = EbtUint16;
2061         $$.setVector(3);
2062     }
2063     | U16VEC4 {
2064         parseContext.int16ScalarVectorCheck($1.loc, "16-bit unsigned integer vector", parseContext.symbolTable.atBuiltInLevel());
2065         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2066         $$.basicType = EbtUint16;
2067         $$.setVector(4);
2068     }
2069     | U32VEC2 {
2070         parseContext.explicitInt32Check($1.loc, "32-bit unsigned integer vector", parseContext.symbolTable.atBuiltInLevel());
2071         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2072         $$.basicType = EbtUint;
2073         $$.setVector(2);
2074     }
2075     | U32VEC3 {
2076         parseContext.explicitInt32Check($1.loc, "32-bit unsigned integer vector", parseContext.symbolTable.atBuiltInLevel());
2077         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2078         $$.basicType = EbtUint;
2079         $$.setVector(3);
2080     }
2081     | U32VEC4 {
2082         parseContext.explicitInt32Check($1.loc, "32-bit unsigned integer vector", parseContext.symbolTable.atBuiltInLevel());
2083         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2084         $$.basicType = EbtUint;
2085         $$.setVector(4);
2086     }
2087     | U64VEC2 {
2088         parseContext.int64Check($1.loc, "64-bit unsigned integer vector", parseContext.symbolTable.atBuiltInLevel());
2089         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2090         $$.basicType = EbtUint64;
2091         $$.setVector(2);
2092     }
2093     | U64VEC3 {
2094         parseContext.int64Check($1.loc, "64-bit unsigned integer vector", parseContext.symbolTable.atBuiltInLevel());
2095         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2096         $$.basicType = EbtUint64;
2097         $$.setVector(3);
2098     }
2099     | U64VEC4 {
2100         parseContext.int64Check($1.loc, "64-bit unsigned integer vector", parseContext.symbolTable.atBuiltInLevel());
2101         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2102         $$.basicType = EbtUint64;
2103         $$.setVector(4);
2104     }
2105     | DMAT2 {
2106         parseContext.requireProfile($1.loc, ECoreProfile | ECompatibilityProfile, "double matrix");
2107         if (! parseContext.symbolTable.atBuiltInLevel())
2108             parseContext.doubleCheck($1.loc, "double matrix");
2109         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2110         $$.basicType = EbtDouble;
2111         $$.setMatrix(2, 2);
2112     }
2113     | DMAT3 {
2114         parseContext.requireProfile($1.loc, ECoreProfile | ECompatibilityProfile, "double matrix");
2115         if (! parseContext.symbolTable.atBuiltInLevel())
2116             parseContext.doubleCheck($1.loc, "double matrix");
2117         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2118         $$.basicType = EbtDouble;
2119         $$.setMatrix(3, 3);
2120     }
2121     | DMAT4 {
2122         parseContext.requireProfile($1.loc, ECoreProfile | ECompatibilityProfile, "double matrix");
2123         if (! parseContext.symbolTable.atBuiltInLevel())
2124             parseContext.doubleCheck($1.loc, "double matrix");
2125         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2126         $$.basicType = EbtDouble;
2127         $$.setMatrix(4, 4);
2128     }
2129     | DMAT2X2 {
2130         parseContext.requireProfile($1.loc, ECoreProfile | ECompatibilityProfile, "double matrix");
2131         if (! parseContext.symbolTable.atBuiltInLevel())
2132             parseContext.doubleCheck($1.loc, "double matrix");
2133         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2134         $$.basicType = EbtDouble;
2135         $$.setMatrix(2, 2);
2136     }
2137     | DMAT2X3 {
2138         parseContext.requireProfile($1.loc, ECoreProfile | ECompatibilityProfile, "double matrix");
2139         if (! parseContext.symbolTable.atBuiltInLevel())
2140             parseContext.doubleCheck($1.loc, "double matrix");
2141         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2142         $$.basicType = EbtDouble;
2143         $$.setMatrix(2, 3);
2144     }
2145     | DMAT2X4 {
2146         parseContext.requireProfile($1.loc, ECoreProfile | ECompatibilityProfile, "double matrix");
2147         if (! parseContext.symbolTable.atBuiltInLevel())
2148             parseContext.doubleCheck($1.loc, "double matrix");
2149         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2150         $$.basicType = EbtDouble;
2151         $$.setMatrix(2, 4);
2152     }
2153     | DMAT3X2 {
2154         parseContext.requireProfile($1.loc, ECoreProfile | ECompatibilityProfile, "double matrix");
2155         if (! parseContext.symbolTable.atBuiltInLevel())
2156             parseContext.doubleCheck($1.loc, "double matrix");
2157         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2158         $$.basicType = EbtDouble;
2159         $$.setMatrix(3, 2);
2160     }
2161     | DMAT3X3 {
2162         parseContext.requireProfile($1.loc, ECoreProfile | ECompatibilityProfile, "double matrix");
2163         if (! parseContext.symbolTable.atBuiltInLevel())
2164             parseContext.doubleCheck($1.loc, "double matrix");
2165         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2166         $$.basicType = EbtDouble;
2167         $$.setMatrix(3, 3);
2168     }
2169     | DMAT3X4 {
2170         parseContext.requireProfile($1.loc, ECoreProfile | ECompatibilityProfile, "double matrix");
2171         if (! parseContext.symbolTable.atBuiltInLevel())
2172             parseContext.doubleCheck($1.loc, "double matrix");
2173         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2174         $$.basicType = EbtDouble;
2175         $$.setMatrix(3, 4);
2176     }
2177     | DMAT4X2 {
2178         parseContext.requireProfile($1.loc, ECoreProfile | ECompatibilityProfile, "double matrix");
2179         if (! parseContext.symbolTable.atBuiltInLevel())
2180             parseContext.doubleCheck($1.loc, "double matrix");
2181         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2182         $$.basicType = EbtDouble;
2183         $$.setMatrix(4, 2);
2184     }
2185     | DMAT4X3 {
2186         parseContext.requireProfile($1.loc, ECoreProfile | ECompatibilityProfile, "double matrix");
2187         if (! parseContext.symbolTable.atBuiltInLevel())
2188             parseContext.doubleCheck($1.loc, "double matrix");
2189         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2190         $$.basicType = EbtDouble;
2191         $$.setMatrix(4, 3);
2192     }
2193     | DMAT4X4 {
2194         parseContext.requireProfile($1.loc, ECoreProfile | ECompatibilityProfile, "double matrix");
2195         if (! parseContext.symbolTable.atBuiltInLevel())
2196             parseContext.doubleCheck($1.loc, "double matrix");
2197         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2198         $$.basicType = EbtDouble;
2199         $$.setMatrix(4, 4);
2200     }
2201     | F16MAT2 {
2202         parseContext.float16Check($1.loc, "half float matrix", parseContext.symbolTable.atBuiltInLevel());
2203         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2204         $$.basicType = EbtFloat16;
2205         $$.setMatrix(2, 2);
2206     }
2207     | F16MAT3 {
2208         parseContext.float16Check($1.loc, "half float matrix", parseContext.symbolTable.atBuiltInLevel());
2209         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2210         $$.basicType = EbtFloat16;
2211         $$.setMatrix(3, 3);
2212     }
2213     | F16MAT4 {
2214         parseContext.float16Check($1.loc, "half float matrix", parseContext.symbolTable.atBuiltInLevel());
2215         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2216         $$.basicType = EbtFloat16;
2217         $$.setMatrix(4, 4);
2218     }
2219     | F16MAT2X2 {
2220         parseContext.float16Check($1.loc, "half float matrix", parseContext.symbolTable.atBuiltInLevel());
2221         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2222         $$.basicType = EbtFloat16;
2223         $$.setMatrix(2, 2);
2224     }
2225     | F16MAT2X3 {
2226         parseContext.float16Check($1.loc, "half float matrix", parseContext.symbolTable.atBuiltInLevel());
2227         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2228         $$.basicType = EbtFloat16;
2229         $$.setMatrix(2, 3);
2230     }
2231     | F16MAT2X4 {
2232         parseContext.float16Check($1.loc, "half float matrix", parseContext.symbolTable.atBuiltInLevel());
2233         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2234         $$.basicType = EbtFloat16;
2235         $$.setMatrix(2, 4);
2236     }
2237     | F16MAT3X2 {
2238         parseContext.float16Check($1.loc, "half float matrix", parseContext.symbolTable.atBuiltInLevel());
2239         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2240         $$.basicType = EbtFloat16;
2241         $$.setMatrix(3, 2);
2242     }
2243     | F16MAT3X3 {
2244         parseContext.float16Check($1.loc, "half float matrix", parseContext.symbolTable.atBuiltInLevel());
2245         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2246         $$.basicType = EbtFloat16;
2247         $$.setMatrix(3, 3);
2248     }
2249     | F16MAT3X4 {
2250         parseContext.float16Check($1.loc, "half float matrix", parseContext.symbolTable.atBuiltInLevel());
2251         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2252         $$.basicType = EbtFloat16;
2253         $$.setMatrix(3, 4);
2254     }
2255     | F16MAT4X2 {
2256         parseContext.float16Check($1.loc, "half float matrix", parseContext.symbolTable.atBuiltInLevel());
2257         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2258         $$.basicType = EbtFloat16;
2259         $$.setMatrix(4, 2);
2260     }
2261     | F16MAT4X3 {
2262         parseContext.float16Check($1.loc, "half float matrix", parseContext.symbolTable.atBuiltInLevel());
2263         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2264         $$.basicType = EbtFloat16;
2265         $$.setMatrix(4, 3);
2266     }
2267     | F16MAT4X4 {
2268         parseContext.float16Check($1.loc, "half float matrix", parseContext.symbolTable.atBuiltInLevel());
2269         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2270         $$.basicType = EbtFloat16;
2271         $$.setMatrix(4, 4);
2272     }
2273     | F32MAT2 {
2274         parseContext.explicitFloat32Check($1.loc, "float32_t matrix", parseContext.symbolTable.atBuiltInLevel());
2275         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2276         $$.basicType = EbtFloat;
2277         $$.setMatrix(2, 2);
2278     }
2279     | F32MAT3 {
2280         parseContext.explicitFloat32Check($1.loc, "float32_t matrix", parseContext.symbolTable.atBuiltInLevel());
2281         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2282         $$.basicType = EbtFloat;
2283         $$.setMatrix(3, 3);
2284     }
2285     | F32MAT4 {
2286         parseContext.explicitFloat32Check($1.loc, "float32_t matrix", parseContext.symbolTable.atBuiltInLevel());
2287         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2288         $$.basicType = EbtFloat;
2289         $$.setMatrix(4, 4);
2290     }
2291     | F32MAT2X2 {
2292         parseContext.explicitFloat32Check($1.loc, "float32_t matrix", parseContext.symbolTable.atBuiltInLevel());
2293         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2294         $$.basicType = EbtFloat;
2295         $$.setMatrix(2, 2);
2296     }
2297     | F32MAT2X3 {
2298         parseContext.explicitFloat32Check($1.loc, "float32_t matrix", parseContext.symbolTable.atBuiltInLevel());
2299         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2300         $$.basicType = EbtFloat;
2301         $$.setMatrix(2, 3);
2302     }
2303     | F32MAT2X4 {
2304         parseContext.explicitFloat32Check($1.loc, "float32_t matrix", parseContext.symbolTable.atBuiltInLevel());
2305         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2306         $$.basicType = EbtFloat;
2307         $$.setMatrix(2, 4);
2308     }
2309     | F32MAT3X2 {
2310         parseContext.explicitFloat32Check($1.loc, "float32_t matrix", parseContext.symbolTable.atBuiltInLevel());
2311         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2312         $$.basicType = EbtFloat;
2313         $$.setMatrix(3, 2);
2314     }
2315     | F32MAT3X3 {
2316         parseContext.explicitFloat32Check($1.loc, "float32_t matrix", parseContext.symbolTable.atBuiltInLevel());
2317         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2318         $$.basicType = EbtFloat;
2319         $$.setMatrix(3, 3);
2320     }
2321     | F32MAT3X4 {
2322         parseContext.explicitFloat32Check($1.loc, "float32_t matrix", parseContext.symbolTable.atBuiltInLevel());
2323         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2324         $$.basicType = EbtFloat;
2325         $$.setMatrix(3, 4);
2326     }
2327     | F32MAT4X2 {
2328         parseContext.explicitFloat32Check($1.loc, "float32_t matrix", parseContext.symbolTable.atBuiltInLevel());
2329         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2330         $$.basicType = EbtFloat;
2331         $$.setMatrix(4, 2);
2332     }
2333     | F32MAT4X3 {
2334         parseContext.explicitFloat32Check($1.loc, "float32_t matrix", parseContext.symbolTable.atBuiltInLevel());
2335         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2336         $$.basicType = EbtFloat;
2337         $$.setMatrix(4, 3);
2338     }
2339     | F32MAT4X4 {
2340         parseContext.explicitFloat32Check($1.loc, "float32_t matrix", parseContext.symbolTable.atBuiltInLevel());
2341         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2342         $$.basicType = EbtFloat;
2343         $$.setMatrix(4, 4);
2344     }
2345     | F64MAT2 {
2346         parseContext.explicitFloat64Check($1.loc, "float64_t matrix", parseContext.symbolTable.atBuiltInLevel());
2347         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2348         $$.basicType = EbtDouble;
2349         $$.setMatrix(2, 2);
2350     }
2351     | F64MAT3 {
2352         parseContext.explicitFloat64Check($1.loc, "float64_t matrix", parseContext.symbolTable.atBuiltInLevel());
2353         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2354         $$.basicType = EbtDouble;
2355         $$.setMatrix(3, 3);
2356     }
2357     | F64MAT4 {
2358         parseContext.explicitFloat64Check($1.loc, "float64_t matrix", parseContext.symbolTable.atBuiltInLevel());
2359         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2360         $$.basicType = EbtDouble;
2361         $$.setMatrix(4, 4);
2362     }
2363     | F64MAT2X2 {
2364         parseContext.explicitFloat64Check($1.loc, "float64_t matrix", parseContext.symbolTable.atBuiltInLevel());
2365         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2366         $$.basicType = EbtDouble;
2367         $$.setMatrix(2, 2);
2368     }
2369     | F64MAT2X3 {
2370         parseContext.explicitFloat64Check($1.loc, "float64_t matrix", parseContext.symbolTable.atBuiltInLevel());
2371         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2372         $$.basicType = EbtDouble;
2373         $$.setMatrix(2, 3);
2374     }
2375     | F64MAT2X4 {
2376         parseContext.explicitFloat64Check($1.loc, "float64_t matrix", parseContext.symbolTable.atBuiltInLevel());
2377         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2378         $$.basicType = EbtDouble;
2379         $$.setMatrix(2, 4);
2380     }
2381     | F64MAT3X2 {
2382         parseContext.explicitFloat64Check($1.loc, "float64_t matrix", parseContext.symbolTable.atBuiltInLevel());
2383         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2384         $$.basicType = EbtDouble;
2385         $$.setMatrix(3, 2);
2386     }
2387     | F64MAT3X3 {
2388         parseContext.explicitFloat64Check($1.loc, "float64_t matrix", parseContext.symbolTable.atBuiltInLevel());
2389         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2390         $$.basicType = EbtDouble;
2391         $$.setMatrix(3, 3);
2392     }
2393     | F64MAT3X4 {
2394         parseContext.explicitFloat64Check($1.loc, "float64_t matrix", parseContext.symbolTable.atBuiltInLevel());
2395         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2396         $$.basicType = EbtDouble;
2397         $$.setMatrix(3, 4);
2398     }
2399     | F64MAT4X2 {
2400         parseContext.explicitFloat64Check($1.loc, "float64_t matrix", parseContext.symbolTable.atBuiltInLevel());
2401         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2402         $$.basicType = EbtDouble;
2403         $$.setMatrix(4, 2);
2404     }
2405     | F64MAT4X3 {
2406         parseContext.explicitFloat64Check($1.loc, "float64_t matrix", parseContext.symbolTable.atBuiltInLevel());
2407         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2408         $$.basicType = EbtDouble;
2409         $$.setMatrix(4, 3);
2410     }
2411     | F64MAT4X4 {
2412         parseContext.explicitFloat64Check($1.loc, "float64_t matrix", parseContext.symbolTable.atBuiltInLevel());
2413         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2414         $$.basicType = EbtDouble;
2415         $$.setMatrix(4, 4);
2416     }
2417     | ACCSTRUCTNV {
2418        $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2419        $$.basicType = EbtAccStruct;
2420     }
2421     | ACCSTRUCTEXT {
2422        $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2423        $$.basicType = EbtAccStruct;
2424     }
2425     | RAYQUERYEXT {
2426        $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2427        $$.basicType = EbtRayQuery;
2428     }
2429     | ATOMIC_UINT {
2430         parseContext.vulkanRemoved($1.loc, "atomic counter types");
2431         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2432         $$.basicType = EbtAtomicUint;
2433     }
2434     | SAMPLER1D {
2435         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2436         $$.basicType = EbtSampler;
2437         $$.sampler.set(EbtFloat, Esd1D);
2438     }
2439 
2440     | SAMPLER2D {
2441         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2442         $$.basicType = EbtSampler;
2443         $$.sampler.set(EbtFloat, Esd2D);
2444     }
2445     | SAMPLER3D {
2446         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2447         $$.basicType = EbtSampler;
2448         $$.sampler.set(EbtFloat, Esd3D);
2449     }
2450     | SAMPLERCUBE {
2451         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2452         $$.basicType = EbtSampler;
2453         $$.sampler.set(EbtFloat, EsdCube);
2454     }
2455     | SAMPLER2DSHADOW {
2456         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2457         $$.basicType = EbtSampler;
2458         $$.sampler.set(EbtFloat, Esd2D, false, true);
2459     }
2460     | SAMPLERCUBESHADOW {
2461         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2462         $$.basicType = EbtSampler;
2463         $$.sampler.set(EbtFloat, EsdCube, false, true);
2464     }
2465     | SAMPLER2DARRAY {
2466         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2467         $$.basicType = EbtSampler;
2468         $$.sampler.set(EbtFloat, Esd2D, true);
2469     }
2470     | SAMPLER2DARRAYSHADOW {
2471         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2472         $$.basicType = EbtSampler;
2473         $$.sampler.set(EbtFloat, Esd2D, true, true);
2474     }
2475 
2476     | SAMPLER1DSHADOW {
2477         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2478         $$.basicType = EbtSampler;
2479         $$.sampler.set(EbtFloat, Esd1D, false, true);
2480     }
2481     | SAMPLER1DARRAY {
2482         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2483         $$.basicType = EbtSampler;
2484         $$.sampler.set(EbtFloat, Esd1D, true);
2485     }
2486     | SAMPLER1DARRAYSHADOW {
2487         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2488         $$.basicType = EbtSampler;
2489         $$.sampler.set(EbtFloat, Esd1D, true, true);
2490     }
2491     | SAMPLERCUBEARRAY {
2492         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2493         $$.basicType = EbtSampler;
2494         $$.sampler.set(EbtFloat, EsdCube, true);
2495     }
2496     | SAMPLERCUBEARRAYSHADOW {
2497         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2498         $$.basicType = EbtSampler;
2499         $$.sampler.set(EbtFloat, EsdCube, true, true);
2500     }
2501     | F16SAMPLER1D {
2502         parseContext.float16OpaqueCheck($1.loc, "half float sampler", parseContext.symbolTable.atBuiltInLevel());
2503         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2504         $$.basicType = EbtSampler;
2505         $$.sampler.set(EbtFloat16, Esd1D);
2506     }
2507     | F16SAMPLER2D {
2508         parseContext.float16OpaqueCheck($1.loc, "half float sampler", parseContext.symbolTable.atBuiltInLevel());
2509         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2510         $$.basicType = EbtSampler;
2511         $$.sampler.set(EbtFloat16, Esd2D);
2512     }
2513     | F16SAMPLER3D {
2514         parseContext.float16OpaqueCheck($1.loc, "half float sampler", parseContext.symbolTable.atBuiltInLevel());
2515         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2516         $$.basicType = EbtSampler;
2517         $$.sampler.set(EbtFloat16, Esd3D);
2518     }
2519     | F16SAMPLERCUBE {
2520         parseContext.float16OpaqueCheck($1.loc, "half float sampler", parseContext.symbolTable.atBuiltInLevel());
2521         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2522         $$.basicType = EbtSampler;
2523         $$.sampler.set(EbtFloat16, EsdCube);
2524     }
2525     | F16SAMPLER1DSHADOW {
2526         parseContext.float16OpaqueCheck($1.loc, "half float sampler", parseContext.symbolTable.atBuiltInLevel());
2527         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2528         $$.basicType = EbtSampler;
2529         $$.sampler.set(EbtFloat16, Esd1D, false, true);
2530     }
2531     | F16SAMPLER2DSHADOW {
2532         parseContext.float16OpaqueCheck($1.loc, "half float sampler", parseContext.symbolTable.atBuiltInLevel());
2533         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2534         $$.basicType = EbtSampler;
2535         $$.sampler.set(EbtFloat16, Esd2D, false, true);
2536     }
2537     | F16SAMPLERCUBESHADOW {
2538         parseContext.float16OpaqueCheck($1.loc, "half float sampler", parseContext.symbolTable.atBuiltInLevel());
2539         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2540         $$.basicType = EbtSampler;
2541         $$.sampler.set(EbtFloat16, EsdCube, false, true);
2542     }
2543     | F16SAMPLER1DARRAY {
2544         parseContext.float16OpaqueCheck($1.loc, "half float sampler", parseContext.symbolTable.atBuiltInLevel());
2545         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2546         $$.basicType = EbtSampler;
2547         $$.sampler.set(EbtFloat16, Esd1D, true);
2548     }
2549     | F16SAMPLER2DARRAY {
2550         parseContext.float16OpaqueCheck($1.loc, "half float sampler", parseContext.symbolTable.atBuiltInLevel());
2551         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2552         $$.basicType = EbtSampler;
2553         $$.sampler.set(EbtFloat16, Esd2D, true);
2554     }
2555     | F16SAMPLER1DARRAYSHADOW {
2556         parseContext.float16OpaqueCheck($1.loc, "half float sampler", parseContext.symbolTable.atBuiltInLevel());
2557         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2558         $$.basicType = EbtSampler;
2559         $$.sampler.set(EbtFloat16, Esd1D, true, true);
2560     }
2561     | F16SAMPLER2DARRAYSHADOW {
2562         parseContext.float16OpaqueCheck($1.loc, "half float sampler", parseContext.symbolTable.atBuiltInLevel());
2563         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2564         $$.basicType = EbtSampler;
2565         $$.sampler.set(EbtFloat16, Esd2D, true, true);
2566     }
2567     | F16SAMPLERCUBEARRAY {
2568         parseContext.float16OpaqueCheck($1.loc, "half float sampler", parseContext.symbolTable.atBuiltInLevel());
2569         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2570         $$.basicType = EbtSampler;
2571         $$.sampler.set(EbtFloat16, EsdCube, true);
2572     }
2573     | F16SAMPLERCUBEARRAYSHADOW {
2574         parseContext.float16OpaqueCheck($1.loc, "half float sampler", parseContext.symbolTable.atBuiltInLevel());
2575         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2576         $$.basicType = EbtSampler;
2577         $$.sampler.set(EbtFloat16, EsdCube, true, true);
2578     }
2579     | ISAMPLER1D {
2580         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2581         $$.basicType = EbtSampler;
2582         $$.sampler.set(EbtInt, Esd1D);
2583     }
2584 
2585     | ISAMPLER2D {
2586         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2587         $$.basicType = EbtSampler;
2588         $$.sampler.set(EbtInt, Esd2D);
2589     }
2590     | ISAMPLER3D {
2591         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2592         $$.basicType = EbtSampler;
2593         $$.sampler.set(EbtInt, Esd3D);
2594     }
2595     | ISAMPLERCUBE {
2596         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2597         $$.basicType = EbtSampler;
2598         $$.sampler.set(EbtInt, EsdCube);
2599     }
2600     | ISAMPLER2DARRAY {
2601         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2602         $$.basicType = EbtSampler;
2603         $$.sampler.set(EbtInt, Esd2D, true);
2604     }
2605     | USAMPLER2D {
2606         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2607         $$.basicType = EbtSampler;
2608         $$.sampler.set(EbtUint, Esd2D);
2609     }
2610     | USAMPLER3D {
2611         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2612         $$.basicType = EbtSampler;
2613         $$.sampler.set(EbtUint, Esd3D);
2614     }
2615     | USAMPLERCUBE {
2616         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2617         $$.basicType = EbtSampler;
2618         $$.sampler.set(EbtUint, EsdCube);
2619     }
2620 
2621     | ISAMPLER1DARRAY {
2622         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2623         $$.basicType = EbtSampler;
2624         $$.sampler.set(EbtInt, Esd1D, true);
2625     }
2626     | ISAMPLERCUBEARRAY {
2627         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2628         $$.basicType = EbtSampler;
2629         $$.sampler.set(EbtInt, EsdCube, true);
2630     }
2631     | USAMPLER1D {
2632         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2633         $$.basicType = EbtSampler;
2634         $$.sampler.set(EbtUint, Esd1D);
2635     }
2636     | USAMPLER1DARRAY {
2637         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2638         $$.basicType = EbtSampler;
2639         $$.sampler.set(EbtUint, Esd1D, true);
2640     }
2641     | USAMPLERCUBEARRAY {
2642         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2643         $$.basicType = EbtSampler;
2644         $$.sampler.set(EbtUint, EsdCube, true);
2645     }
2646     | TEXTURECUBEARRAY {
2647         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2648         $$.basicType = EbtSampler;
2649         $$.sampler.setTexture(EbtFloat, EsdCube, true);
2650     }
2651     | ITEXTURECUBEARRAY {
2652         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2653         $$.basicType = EbtSampler;
2654         $$.sampler.setTexture(EbtInt, EsdCube, true);
2655     }
2656     | UTEXTURECUBEARRAY {
2657         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2658         $$.basicType = EbtSampler;
2659         $$.sampler.setTexture(EbtUint, EsdCube, true);
2660     }
2661 
2662     | USAMPLER2DARRAY {
2663         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2664         $$.basicType = EbtSampler;
2665         $$.sampler.set(EbtUint, Esd2D, true);
2666     }
2667     | TEXTURE2D {
2668         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2669         $$.basicType = EbtSampler;
2670         $$.sampler.setTexture(EbtFloat, Esd2D);
2671     }
2672     | TEXTURE3D {
2673         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2674         $$.basicType = EbtSampler;
2675         $$.sampler.setTexture(EbtFloat, Esd3D);
2676     }
2677     | TEXTURE2DARRAY {
2678         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2679         $$.basicType = EbtSampler;
2680         $$.sampler.setTexture(EbtFloat, Esd2D, true);
2681     }
2682     | TEXTURECUBE {
2683         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2684         $$.basicType = EbtSampler;
2685         $$.sampler.setTexture(EbtFloat, EsdCube);
2686     }
2687     | ITEXTURE2D {
2688         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2689         $$.basicType = EbtSampler;
2690         $$.sampler.setTexture(EbtInt, Esd2D);
2691     }
2692     | ITEXTURE3D {
2693         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2694         $$.basicType = EbtSampler;
2695         $$.sampler.setTexture(EbtInt, Esd3D);
2696     }
2697     | ITEXTURECUBE {
2698         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2699         $$.basicType = EbtSampler;
2700         $$.sampler.setTexture(EbtInt, EsdCube);
2701     }
2702     | ITEXTURE2DARRAY {
2703         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2704         $$.basicType = EbtSampler;
2705         $$.sampler.setTexture(EbtInt, Esd2D, true);
2706     }
2707     | UTEXTURE2D {
2708         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2709         $$.basicType = EbtSampler;
2710         $$.sampler.setTexture(EbtUint, Esd2D);
2711     }
2712     | UTEXTURE3D {
2713         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2714         $$.basicType = EbtSampler;
2715         $$.sampler.setTexture(EbtUint, Esd3D);
2716     }
2717     | UTEXTURECUBE {
2718         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2719         $$.basicType = EbtSampler;
2720         $$.sampler.setTexture(EbtUint, EsdCube);
2721     }
2722     | UTEXTURE2DARRAY {
2723         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2724         $$.basicType = EbtSampler;
2725         $$.sampler.setTexture(EbtUint, Esd2D, true);
2726     }
2727     | SAMPLER {
2728         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2729         $$.basicType = EbtSampler;
2730         $$.sampler.setPureSampler(false);
2731     }
2732     | SAMPLERSHADOW {
2733         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2734         $$.basicType = EbtSampler;
2735         $$.sampler.setPureSampler(true);
2736     }
2737 
2738     | SAMPLER2DRECT {
2739         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2740         $$.basicType = EbtSampler;
2741         $$.sampler.set(EbtFloat, EsdRect);
2742     }
2743     | SAMPLER2DRECTSHADOW {
2744         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2745         $$.basicType = EbtSampler;
2746         $$.sampler.set(EbtFloat, EsdRect, false, true);
2747     }
2748     | F16SAMPLER2DRECT {
2749         parseContext.float16OpaqueCheck($1.loc, "half float sampler", parseContext.symbolTable.atBuiltInLevel());
2750         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2751         $$.basicType = EbtSampler;
2752         $$.sampler.set(EbtFloat16, EsdRect);
2753     }
2754     | F16SAMPLER2DRECTSHADOW {
2755         parseContext.float16OpaqueCheck($1.loc, "half float sampler", parseContext.symbolTable.atBuiltInLevel());
2756         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2757         $$.basicType = EbtSampler;
2758         $$.sampler.set(EbtFloat16, EsdRect, false, true);
2759     }
2760     | ISAMPLER2DRECT {
2761         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2762         $$.basicType = EbtSampler;
2763         $$.sampler.set(EbtInt, EsdRect);
2764     }
2765     | USAMPLER2DRECT {
2766         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2767         $$.basicType = EbtSampler;
2768         $$.sampler.set(EbtUint, EsdRect);
2769     }
2770     | SAMPLERBUFFER {
2771         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2772         $$.basicType = EbtSampler;
2773         $$.sampler.set(EbtFloat, EsdBuffer);
2774     }
2775     | F16SAMPLERBUFFER {
2776         parseContext.float16OpaqueCheck($1.loc, "half float sampler", parseContext.symbolTable.atBuiltInLevel());
2777         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2778         $$.basicType = EbtSampler;
2779         $$.sampler.set(EbtFloat16, EsdBuffer);
2780     }
2781     | ISAMPLERBUFFER {
2782         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2783         $$.basicType = EbtSampler;
2784         $$.sampler.set(EbtInt, EsdBuffer);
2785     }
2786     | USAMPLERBUFFER {
2787         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2788         $$.basicType = EbtSampler;
2789         $$.sampler.set(EbtUint, EsdBuffer);
2790     }
2791     | SAMPLER2DMS {
2792         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2793         $$.basicType = EbtSampler;
2794         $$.sampler.set(EbtFloat, Esd2D, false, false, true);
2795     }
2796     | F16SAMPLER2DMS {
2797         parseContext.float16OpaqueCheck($1.loc, "half float sampler", parseContext.symbolTable.atBuiltInLevel());
2798         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2799         $$.basicType = EbtSampler;
2800         $$.sampler.set(EbtFloat16, Esd2D, false, false, true);
2801     }
2802     | ISAMPLER2DMS {
2803         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2804         $$.basicType = EbtSampler;
2805         $$.sampler.set(EbtInt, Esd2D, false, false, true);
2806     }
2807     | USAMPLER2DMS {
2808         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2809         $$.basicType = EbtSampler;
2810         $$.sampler.set(EbtUint, Esd2D, false, false, true);
2811     }
2812     | SAMPLER2DMSARRAY {
2813         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2814         $$.basicType = EbtSampler;
2815         $$.sampler.set(EbtFloat, Esd2D, true, false, true);
2816     }
2817     | F16SAMPLER2DMSARRAY {
2818         parseContext.float16OpaqueCheck($1.loc, "half float sampler", parseContext.symbolTable.atBuiltInLevel());
2819         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2820         $$.basicType = EbtSampler;
2821         $$.sampler.set(EbtFloat16, Esd2D, true, false, true);
2822     }
2823     | ISAMPLER2DMSARRAY {
2824         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2825         $$.basicType = EbtSampler;
2826         $$.sampler.set(EbtInt, Esd2D, true, false, true);
2827     }
2828     | USAMPLER2DMSARRAY {
2829         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2830         $$.basicType = EbtSampler;
2831         $$.sampler.set(EbtUint, Esd2D, true, false, true);
2832     }
2833     | TEXTURE1D {
2834         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2835         $$.basicType = EbtSampler;
2836         $$.sampler.setTexture(EbtFloat, Esd1D);
2837     }
2838     | F16TEXTURE1D {
2839         parseContext.float16OpaqueCheck($1.loc, "half float texture", parseContext.symbolTable.atBuiltInLevel());
2840         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2841         $$.basicType = EbtSampler;
2842         $$.sampler.setTexture(EbtFloat16, Esd1D);
2843     }
2844     | F16TEXTURE2D {
2845         parseContext.float16OpaqueCheck($1.loc, "half float texture", parseContext.symbolTable.atBuiltInLevel());
2846         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2847         $$.basicType = EbtSampler;
2848         $$.sampler.setTexture(EbtFloat16, Esd2D);
2849     }
2850     | F16TEXTURE3D {
2851         parseContext.float16OpaqueCheck($1.loc, "half float texture", parseContext.symbolTable.atBuiltInLevel());
2852         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2853         $$.basicType = EbtSampler;
2854         $$.sampler.setTexture(EbtFloat16, Esd3D);
2855     }
2856     | F16TEXTURECUBE {
2857         parseContext.float16OpaqueCheck($1.loc, "half float texture", parseContext.symbolTable.atBuiltInLevel());
2858         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2859         $$.basicType = EbtSampler;
2860         $$.sampler.setTexture(EbtFloat16, EsdCube);
2861     }
2862     | TEXTURE1DARRAY {
2863         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2864         $$.basicType = EbtSampler;
2865         $$.sampler.setTexture(EbtFloat, Esd1D, true);
2866     }
2867     | F16TEXTURE1DARRAY {
2868         parseContext.float16OpaqueCheck($1.loc, "half float texture", parseContext.symbolTable.atBuiltInLevel());
2869         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2870         $$.basicType = EbtSampler;
2871         $$.sampler.setTexture(EbtFloat16, Esd1D, true);
2872     }
2873     | F16TEXTURE2DARRAY {
2874         parseContext.float16OpaqueCheck($1.loc, "half float texture", parseContext.symbolTable.atBuiltInLevel());
2875         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2876         $$.basicType = EbtSampler;
2877         $$.sampler.setTexture(EbtFloat16, Esd2D, true);
2878     }
2879     | F16TEXTURECUBEARRAY {
2880         parseContext.float16OpaqueCheck($1.loc, "half float texture", parseContext.symbolTable.atBuiltInLevel());
2881         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2882         $$.basicType = EbtSampler;
2883         $$.sampler.setTexture(EbtFloat16, EsdCube, true);
2884     }
2885     | ITEXTURE1D {
2886         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2887         $$.basicType = EbtSampler;
2888         $$.sampler.setTexture(EbtInt, Esd1D);
2889     }
2890     | ITEXTURE1DARRAY {
2891         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2892         $$.basicType = EbtSampler;
2893         $$.sampler.setTexture(EbtInt, Esd1D, true);
2894     }
2895     | UTEXTURE1D {
2896         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2897         $$.basicType = EbtSampler;
2898         $$.sampler.setTexture(EbtUint, Esd1D);
2899     }
2900     | UTEXTURE1DARRAY {
2901         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2902         $$.basicType = EbtSampler;
2903         $$.sampler.setTexture(EbtUint, Esd1D, true);
2904     }
2905     | TEXTURE2DRECT {
2906         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2907         $$.basicType = EbtSampler;
2908         $$.sampler.setTexture(EbtFloat, EsdRect);
2909     }
2910     | F16TEXTURE2DRECT {
2911         parseContext.float16OpaqueCheck($1.loc, "half float texture", parseContext.symbolTable.atBuiltInLevel());
2912         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2913         $$.basicType = EbtSampler;
2914         $$.sampler.setTexture(EbtFloat16, EsdRect);
2915     }
2916     | ITEXTURE2DRECT {
2917         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2918         $$.basicType = EbtSampler;
2919         $$.sampler.setTexture(EbtInt, EsdRect);
2920     }
2921     | UTEXTURE2DRECT {
2922         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2923         $$.basicType = EbtSampler;
2924         $$.sampler.setTexture(EbtUint, EsdRect);
2925     }
2926     | TEXTUREBUFFER {
2927         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2928         $$.basicType = EbtSampler;
2929         $$.sampler.setTexture(EbtFloat, EsdBuffer);
2930     }
2931     | F16TEXTUREBUFFER {
2932         parseContext.float16OpaqueCheck($1.loc, "half float texture", parseContext.symbolTable.atBuiltInLevel());
2933         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2934         $$.basicType = EbtSampler;
2935         $$.sampler.setTexture(EbtFloat16, EsdBuffer);
2936     }
2937     | ITEXTUREBUFFER {
2938         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2939         $$.basicType = EbtSampler;
2940         $$.sampler.setTexture(EbtInt, EsdBuffer);
2941     }
2942     | UTEXTUREBUFFER {
2943         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2944         $$.basicType = EbtSampler;
2945         $$.sampler.setTexture(EbtUint, EsdBuffer);
2946     }
2947     | TEXTURE2DMS {
2948         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2949         $$.basicType = EbtSampler;
2950         $$.sampler.setTexture(EbtFloat, Esd2D, false, false, true);
2951     }
2952     | F16TEXTURE2DMS {
2953         parseContext.float16OpaqueCheck($1.loc, "half float texture", parseContext.symbolTable.atBuiltInLevel());
2954         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2955         $$.basicType = EbtSampler;
2956         $$.sampler.setTexture(EbtFloat16, Esd2D, false, false, true);
2957     }
2958     | ITEXTURE2DMS {
2959         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2960         $$.basicType = EbtSampler;
2961         $$.sampler.setTexture(EbtInt, Esd2D, false, false, true);
2962     }
2963     | UTEXTURE2DMS {
2964         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2965         $$.basicType = EbtSampler;
2966         $$.sampler.setTexture(EbtUint, Esd2D, false, false, true);
2967     }
2968     | TEXTURE2DMSARRAY {
2969         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2970         $$.basicType = EbtSampler;
2971         $$.sampler.setTexture(EbtFloat, Esd2D, true, false, true);
2972     }
2973     | F16TEXTURE2DMSARRAY {
2974         parseContext.float16OpaqueCheck($1.loc, "half float texture", parseContext.symbolTable.atBuiltInLevel());
2975         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2976         $$.basicType = EbtSampler;
2977         $$.sampler.setTexture(EbtFloat16, Esd2D, true, false, true);
2978     }
2979     | ITEXTURE2DMSARRAY {
2980         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2981         $$.basicType = EbtSampler;
2982         $$.sampler.setTexture(EbtInt, Esd2D, true, false, true);
2983     }
2984     | UTEXTURE2DMSARRAY {
2985         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2986         $$.basicType = EbtSampler;
2987         $$.sampler.setTexture(EbtUint, Esd2D, true, false, true);
2988     }
2989     | IMAGE1D {
2990         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2991         $$.basicType = EbtSampler;
2992         $$.sampler.setImage(EbtFloat, Esd1D);
2993     }
2994     | F16IMAGE1D {
2995         parseContext.float16OpaqueCheck($1.loc, "half float image", parseContext.symbolTable.atBuiltInLevel());
2996         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
2997         $$.basicType = EbtSampler;
2998         $$.sampler.setImage(EbtFloat16, Esd1D);
2999     }
3000     | IIMAGE1D {
3001         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
3002         $$.basicType = EbtSampler;
3003         $$.sampler.setImage(EbtInt, Esd1D);
3004     }
3005     | UIMAGE1D {
3006         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
3007         $$.basicType = EbtSampler;
3008         $$.sampler.setImage(EbtUint, Esd1D);
3009     }
3010     | IMAGE2D {
3011         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
3012         $$.basicType = EbtSampler;
3013         $$.sampler.setImage(EbtFloat, Esd2D);
3014     }
3015     | F16IMAGE2D {
3016         parseContext.float16OpaqueCheck($1.loc, "half float image", parseContext.symbolTable.atBuiltInLevel());
3017         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
3018         $$.basicType = EbtSampler;
3019         $$.sampler.setImage(EbtFloat16, Esd2D);
3020     }
3021     | IIMAGE2D {
3022         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
3023         $$.basicType = EbtSampler;
3024         $$.sampler.setImage(EbtInt, Esd2D);
3025     }
3026     | UIMAGE2D {
3027         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
3028         $$.basicType = EbtSampler;
3029         $$.sampler.setImage(EbtUint, Esd2D);
3030     }
3031     | IMAGE3D {
3032         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
3033         $$.basicType = EbtSampler;
3034         $$.sampler.setImage(EbtFloat, Esd3D);
3035     }
3036     | F16IMAGE3D {
3037         parseContext.float16OpaqueCheck($1.loc, "half float image", parseContext.symbolTable.atBuiltInLevel());
3038         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
3039         $$.basicType = EbtSampler;
3040         $$.sampler.setImage(EbtFloat16, Esd3D);
3041     }
3042     | IIMAGE3D {
3043         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
3044         $$.basicType = EbtSampler;
3045         $$.sampler.setImage(EbtInt, Esd3D);
3046     }
3047     | UIMAGE3D {
3048         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
3049         $$.basicType = EbtSampler;
3050         $$.sampler.setImage(EbtUint, Esd3D);
3051     }
3052     | IMAGE2DRECT {
3053         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
3054         $$.basicType = EbtSampler;
3055         $$.sampler.setImage(EbtFloat, EsdRect);
3056     }
3057     | F16IMAGE2DRECT {
3058         parseContext.float16OpaqueCheck($1.loc, "half float image", parseContext.symbolTable.atBuiltInLevel());
3059         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
3060         $$.basicType = EbtSampler;
3061         $$.sampler.setImage(EbtFloat16, EsdRect);
3062     }
3063     | IIMAGE2DRECT {
3064         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
3065         $$.basicType = EbtSampler;
3066         $$.sampler.setImage(EbtInt, EsdRect);
3067     }
3068     | UIMAGE2DRECT {
3069         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
3070         $$.basicType = EbtSampler;
3071         $$.sampler.setImage(EbtUint, EsdRect);
3072     }
3073     | IMAGECUBE {
3074         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
3075         $$.basicType = EbtSampler;
3076         $$.sampler.setImage(EbtFloat, EsdCube);
3077     }
3078     | F16IMAGECUBE {
3079         parseContext.float16OpaqueCheck($1.loc, "half float image", parseContext.symbolTable.atBuiltInLevel());
3080         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
3081         $$.basicType = EbtSampler;
3082         $$.sampler.setImage(EbtFloat16, EsdCube);
3083     }
3084     | IIMAGECUBE {
3085         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
3086         $$.basicType = EbtSampler;
3087         $$.sampler.setImage(EbtInt, EsdCube);
3088     }
3089     | UIMAGECUBE {
3090         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
3091         $$.basicType = EbtSampler;
3092         $$.sampler.setImage(EbtUint, EsdCube);
3093     }
3094     | IMAGEBUFFER {
3095         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
3096         $$.basicType = EbtSampler;
3097         $$.sampler.setImage(EbtFloat, EsdBuffer);
3098     }
3099     | F16IMAGEBUFFER {
3100         parseContext.float16OpaqueCheck($1.loc, "half float image", parseContext.symbolTable.atBuiltInLevel());
3101         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
3102         $$.basicType = EbtSampler;
3103         $$.sampler.setImage(EbtFloat16, EsdBuffer);
3104     }
3105     | IIMAGEBUFFER {
3106         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
3107         $$.basicType = EbtSampler;
3108         $$.sampler.setImage(EbtInt, EsdBuffer);
3109     }
3110     | UIMAGEBUFFER {
3111         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
3112         $$.basicType = EbtSampler;
3113         $$.sampler.setImage(EbtUint, EsdBuffer);
3114     }
3115     | IMAGE1DARRAY {
3116         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
3117         $$.basicType = EbtSampler;
3118         $$.sampler.setImage(EbtFloat, Esd1D, true);
3119     }
3120     | F16IMAGE1DARRAY {
3121         parseContext.float16OpaqueCheck($1.loc, "half float image", parseContext.symbolTable.atBuiltInLevel());
3122         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
3123         $$.basicType = EbtSampler;
3124         $$.sampler.setImage(EbtFloat16, Esd1D, true);
3125     }
3126     | IIMAGE1DARRAY {
3127         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
3128         $$.basicType = EbtSampler;
3129         $$.sampler.setImage(EbtInt, Esd1D, true);
3130     }
3131     | UIMAGE1DARRAY {
3132         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
3133         $$.basicType = EbtSampler;
3134         $$.sampler.setImage(EbtUint, Esd1D, true);
3135     }
3136     | IMAGE2DARRAY {
3137         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
3138         $$.basicType = EbtSampler;
3139         $$.sampler.setImage(EbtFloat, Esd2D, true);
3140     }
3141     | F16IMAGE2DARRAY {
3142         parseContext.float16OpaqueCheck($1.loc, "half float image", parseContext.symbolTable.atBuiltInLevel());
3143         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
3144         $$.basicType = EbtSampler;
3145         $$.sampler.setImage(EbtFloat16, Esd2D, true);
3146     }
3147     | IIMAGE2DARRAY {
3148         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
3149         $$.basicType = EbtSampler;
3150         $$.sampler.setImage(EbtInt, Esd2D, true);
3151     }
3152     | UIMAGE2DARRAY {
3153         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
3154         $$.basicType = EbtSampler;
3155         $$.sampler.setImage(EbtUint, Esd2D, true);
3156     }
3157     | IMAGECUBEARRAY {
3158         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
3159         $$.basicType = EbtSampler;
3160         $$.sampler.setImage(EbtFloat, EsdCube, true);
3161     }
3162     | F16IMAGECUBEARRAY {
3163         parseContext.float16OpaqueCheck($1.loc, "half float image", parseContext.symbolTable.atBuiltInLevel());
3164         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
3165         $$.basicType = EbtSampler;
3166         $$.sampler.setImage(EbtFloat16, EsdCube, true);
3167     }
3168     | IIMAGECUBEARRAY {
3169         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
3170         $$.basicType = EbtSampler;
3171         $$.sampler.setImage(EbtInt, EsdCube, true);
3172     }
3173     | UIMAGECUBEARRAY {
3174         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
3175         $$.basicType = EbtSampler;
3176         $$.sampler.setImage(EbtUint, EsdCube, true);
3177     }
3178     | IMAGE2DMS {
3179         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
3180         $$.basicType = EbtSampler;
3181         $$.sampler.setImage(EbtFloat, Esd2D, false, false, true);
3182     }
3183     | F16IMAGE2DMS {
3184         parseContext.float16OpaqueCheck($1.loc, "half float image", parseContext.symbolTable.atBuiltInLevel());
3185         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
3186         $$.basicType = EbtSampler;
3187         $$.sampler.setImage(EbtFloat16, Esd2D, false, false, true);
3188     }
3189     | IIMAGE2DMS {
3190         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
3191         $$.basicType = EbtSampler;
3192         $$.sampler.setImage(EbtInt, Esd2D, false, false, true);
3193     }
3194     | UIMAGE2DMS {
3195         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
3196         $$.basicType = EbtSampler;
3197         $$.sampler.setImage(EbtUint, Esd2D, false, false, true);
3198     }
3199     | IMAGE2DMSARRAY {
3200         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
3201         $$.basicType = EbtSampler;
3202         $$.sampler.setImage(EbtFloat, Esd2D, true, false, true);
3203     }
3204     | F16IMAGE2DMSARRAY {
3205         parseContext.float16OpaqueCheck($1.loc, "half float image", parseContext.symbolTable.atBuiltInLevel());
3206         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
3207         $$.basicType = EbtSampler;
3208         $$.sampler.setImage(EbtFloat16, Esd2D, true, false, true);
3209     }
3210     | IIMAGE2DMSARRAY {
3211         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
3212         $$.basicType = EbtSampler;
3213         $$.sampler.setImage(EbtInt, Esd2D, true, false, true);
3214     }
3215     | UIMAGE2DMSARRAY {
3216         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
3217         $$.basicType = EbtSampler;
3218         $$.sampler.setImage(EbtUint, Esd2D, true, false, true);
3219     }
3220     | I64IMAGE1D {
3221         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
3222         $$.basicType = EbtSampler;
3223         $$.sampler.setImage(EbtInt64, Esd1D);
3224     }
3225     | U64IMAGE1D {
3226         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
3227         $$.basicType = EbtSampler;
3228         $$.sampler.setImage(EbtUint64, Esd1D);
3229     }
3230     | I64IMAGE2D {
3231         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
3232         $$.basicType = EbtSampler;
3233         $$.sampler.setImage(EbtInt64, Esd2D);
3234     }
3235     | U64IMAGE2D {
3236         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
3237         $$.basicType = EbtSampler;
3238         $$.sampler.setImage(EbtUint64, Esd2D);
3239     }
3240     | I64IMAGE3D {
3241         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
3242         $$.basicType = EbtSampler;
3243         $$.sampler.setImage(EbtInt64, Esd3D);
3244     }
3245     | U64IMAGE3D {
3246         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
3247         $$.basicType = EbtSampler;
3248         $$.sampler.setImage(EbtUint64, Esd3D);
3249     }
3250     | I64IMAGE2DRECT {
3251         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
3252         $$.basicType = EbtSampler;
3253         $$.sampler.setImage(EbtInt64, EsdRect);
3254     }
3255     | U64IMAGE2DRECT {
3256         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
3257         $$.basicType = EbtSampler;
3258         $$.sampler.setImage(EbtUint64, EsdRect);
3259     }
3260     | I64IMAGECUBE {
3261         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
3262         $$.basicType = EbtSampler;
3263         $$.sampler.setImage(EbtInt64, EsdCube);
3264     }
3265     | U64IMAGECUBE {
3266         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
3267         $$.basicType = EbtSampler;
3268         $$.sampler.setImage(EbtUint64, EsdCube);
3269     }
3270     | I64IMAGEBUFFER {
3271         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
3272         $$.basicType = EbtSampler;
3273         $$.sampler.setImage(EbtInt64, EsdBuffer);
3274     }
3275     | U64IMAGEBUFFER {
3276         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
3277         $$.basicType = EbtSampler;
3278         $$.sampler.setImage(EbtUint64, EsdBuffer);
3279     }
3280     | I64IMAGE1DARRAY {
3281         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
3282         $$.basicType = EbtSampler;
3283         $$.sampler.setImage(EbtInt64, Esd1D, true);
3284     }
3285     | U64IMAGE1DARRAY {
3286         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
3287         $$.basicType = EbtSampler;
3288         $$.sampler.setImage(EbtUint64, Esd1D, true);
3289     }
3290     | I64IMAGE2DARRAY {
3291         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
3292         $$.basicType = EbtSampler;
3293         $$.sampler.setImage(EbtInt64, Esd2D, true);
3294     }
3295     | U64IMAGE2DARRAY {
3296         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
3297         $$.basicType = EbtSampler;
3298         $$.sampler.setImage(EbtUint64, Esd2D, true);
3299     }
3300     | I64IMAGECUBEARRAY {
3301         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
3302         $$.basicType = EbtSampler;
3303         $$.sampler.setImage(EbtInt64, EsdCube, true);
3304     }
3305     | U64IMAGECUBEARRAY {
3306         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
3307         $$.basicType = EbtSampler;
3308         $$.sampler.setImage(EbtUint64, EsdCube, true);
3309     }
3310     | I64IMAGE2DMS {
3311         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
3312         $$.basicType = EbtSampler;
3313         $$.sampler.setImage(EbtInt64, Esd2D, false, false, true);
3314     }
3315     | U64IMAGE2DMS {
3316         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
3317         $$.basicType = EbtSampler;
3318         $$.sampler.setImage(EbtUint64, Esd2D, false, false, true);
3319     }
3320     | I64IMAGE2DMSARRAY {
3321         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
3322         $$.basicType = EbtSampler;
3323         $$.sampler.setImage(EbtInt64, Esd2D, true, false, true);
3324     }
3325     | U64IMAGE2DMSARRAY {
3326         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
3327         $$.basicType = EbtSampler;
3328         $$.sampler.setImage(EbtUint64, Esd2D, true, false, true);
3329     }
3330     | SAMPLEREXTERNALOES {  // GL_OES_EGL_image_external
3331         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
3332         $$.basicType = EbtSampler;
3333         $$.sampler.set(EbtFloat, Esd2D);
3334         $$.sampler.external = true;
3335     }
3336     | SAMPLEREXTERNAL2DY2YEXT { // GL_EXT_YUV_target
3337         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
3338         $$.basicType = EbtSampler;
3339         $$.sampler.set(EbtFloat, Esd2D);
3340         $$.sampler.yuv = true;
3341     }
3342     | SUBPASSINPUT {
3343         parseContext.requireStage($1.loc, EShLangFragment, "subpass input");
3344         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
3345         $$.basicType = EbtSampler;
3346         $$.sampler.setSubpass(EbtFloat);
3347     }
3348     | SUBPASSINPUTMS {
3349         parseContext.requireStage($1.loc, EShLangFragment, "subpass input");
3350         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
3351         $$.basicType = EbtSampler;
3352         $$.sampler.setSubpass(EbtFloat, true);
3353     }
3354     | F16SUBPASSINPUT {
3355         parseContext.float16OpaqueCheck($1.loc, "half float subpass input", parseContext.symbolTable.atBuiltInLevel());
3356         parseContext.requireStage($1.loc, EShLangFragment, "subpass input");
3357         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
3358         $$.basicType = EbtSampler;
3359         $$.sampler.setSubpass(EbtFloat16);
3360     }
3361     | F16SUBPASSINPUTMS {
3362         parseContext.float16OpaqueCheck($1.loc, "half float subpass input", parseContext.symbolTable.atBuiltInLevel());
3363         parseContext.requireStage($1.loc, EShLangFragment, "subpass input");
3364         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
3365         $$.basicType = EbtSampler;
3366         $$.sampler.setSubpass(EbtFloat16, true);
3367     }
3368     | ISUBPASSINPUT {
3369         parseContext.requireStage($1.loc, EShLangFragment, "subpass input");
3370         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
3371         $$.basicType = EbtSampler;
3372         $$.sampler.setSubpass(EbtInt);
3373     }
3374     | ISUBPASSINPUTMS {
3375         parseContext.requireStage($1.loc, EShLangFragment, "subpass input");
3376         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
3377         $$.basicType = EbtSampler;
3378         $$.sampler.setSubpass(EbtInt, true);
3379     }
3380     | USUBPASSINPUT {
3381         parseContext.requireStage($1.loc, EShLangFragment, "subpass input");
3382         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
3383         $$.basicType = EbtSampler;
3384         $$.sampler.setSubpass(EbtUint);
3385     }
3386     | USUBPASSINPUTMS {
3387         parseContext.requireStage($1.loc, EShLangFragment, "subpass input");
3388         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
3389         $$.basicType = EbtSampler;
3390         $$.sampler.setSubpass(EbtUint, true);
3391     }
3392     | FCOOPMATNV {
3393         parseContext.fcoopmatCheck($1.loc, "fcoopmatNV", parseContext.symbolTable.atBuiltInLevel());
3394         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
3395         $$.basicType = EbtFloat;
3396         $$.coopmat = true;
3397     }
3398     | ICOOPMATNV {
3399         parseContext.intcoopmatCheck($1.loc, "icoopmatNV", parseContext.symbolTable.atBuiltInLevel());
3400         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
3401         $$.basicType = EbtInt;
3402         $$.coopmat = true;
3403     }
3404     | UCOOPMATNV {
3405         parseContext.intcoopmatCheck($1.loc, "ucoopmatNV", parseContext.symbolTable.atBuiltInLevel());
3406         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
3407         $$.basicType = EbtUint;
3408         $$.coopmat = true;
3409     }
3410 
3411     | struct_specifier {
3412         $$ = $1;
3413         $$.qualifier.storage = parseContext.symbolTable.atGlobalLevel() ? EvqGlobal : EvqTemporary;
3414         parseContext.structTypeCheck($$.loc, $$);
3415     }
3416     | TYPE_NAME {
3417         //
3418         // This is for user defined type names.  The lexical phase looked up the
3419         // type.
3420         //
3421         if (const TVariable* variable = ($1.symbol)->getAsVariable()) {
3422             const TType& structure = variable->getType();
3423             $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
3424             $$.basicType = EbtStruct;
3425             $$.userDef = &structure;
3426         } else
3427             parseContext.error($1.loc, "expected type name", $1.string->c_str(), "");
3428     }
3429     ;
3430 
3431 precision_qualifier
3432     : HIGH_PRECISION {
3433         parseContext.profileRequires($1.loc, ENoProfile, 130, 0, "highp precision qualifier");
3434         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
3435         parseContext.handlePrecisionQualifier($1.loc, $$.qualifier, EpqHigh);
3436     }
3437     | MEDIUM_PRECISION {
3438         parseContext.profileRequires($1.loc, ENoProfile, 130, 0, "mediump precision qualifier");
3439         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
3440         parseContext.handlePrecisionQualifier($1.loc, $$.qualifier, EpqMedium);
3441     }
3442     | LOW_PRECISION {
3443         parseContext.profileRequires($1.loc, ENoProfile, 130, 0, "lowp precision qualifier");
3444         $$.init($1.loc, parseContext.symbolTable.atGlobalLevel());
3445         parseContext.handlePrecisionQualifier($1.loc, $$.qualifier, EpqLow);
3446     }
3447     ;
3448 
3449 struct_specifier
3450     : STRUCT IDENTIFIER LEFT_BRACE { parseContext.nestedStructCheck($1.loc); } struct_declaration_list RIGHT_BRACE {
3451         TType* structure = new TType($5, *$2.string);
3452         parseContext.structArrayCheck($2.loc, *structure);
3453         TVariable* userTypeDef = new TVariable($2.string, *structure, true);
3454         if (! parseContext.symbolTable.insert(*userTypeDef))
3455             parseContext.error($2.loc, "redefinition", $2.string->c_str(), "struct");
3456         $$.init($1.loc);
3457         $$.basicType = EbtStruct;
3458         $$.userDef = structure;
3459         --parseContext.structNestingLevel;
3460     }
3461     | STRUCT LEFT_BRACE { parseContext.nestedStructCheck($1.loc); } struct_declaration_list RIGHT_BRACE {
3462         TType* structure = new TType($4, TString(""));
3463         $$.init($1.loc);
3464         $$.basicType = EbtStruct;
3465         $$.userDef = structure;
3466         --parseContext.structNestingLevel;
3467     }
3468     ;
3469 
3470 struct_declaration_list
3471     : struct_declaration {
3472         $$ = $1;
3473     }
3474     | struct_declaration_list struct_declaration {
3475         $$ = $1;
3476         for (unsigned int i = 0; i < $2->size(); ++i) {
3477             for (unsigned int j = 0; j < $$->size(); ++j) {
3478                 if ((*$$)[j].type->getFieldName() == (*$2)[i].type->getFieldName())
3479                     parseContext.error((*$2)[i].loc, "duplicate member name:", "", (*$2)[i].type->getFieldName().c_str());
3480             }
3481             $$->push_back((*$2)[i]);
3482         }
3483     }
3484     ;
3485 
3486 struct_declaration
3487     : type_specifier struct_declarator_list SEMICOLON {
3488         if ($1.arraySizes) {
3489             parseContext.profileRequires($1.loc, ENoProfile, 120, E_GL_3DL_array_objects, "arrayed type");
3490             parseContext.profileRequires($1.loc, EEsProfile, 300, 0, "arrayed type");
3491             if (parseContext.isEsProfile())
3492                 parseContext.arraySizeRequiredCheck($1.loc, *$1.arraySizes);
3493         }
3494 
3495         $$ = $2;
3496 
3497         parseContext.voidErrorCheck($1.loc, (*$2)[0].type->getFieldName(), $1.basicType);
3498         parseContext.precisionQualifierCheck($1.loc, $1.basicType, $1.qualifier);
3499 
3500         for (unsigned int i = 0; i < $$->size(); ++i) {
3501             TType type($1);
3502             type.setFieldName((*$$)[i].type->getFieldName());
3503             type.transferArraySizes((*$$)[i].type->getArraySizes());
3504             type.copyArrayInnerSizes($1.arraySizes);
3505             parseContext.arrayOfArrayVersionCheck((*$$)[i].loc, type.getArraySizes());
3506             (*$$)[i].type->shallowCopy(type);
3507         }
3508     }
3509     | type_qualifier type_specifier struct_declarator_list SEMICOLON {
3510         if ($2.arraySizes) {
3511             parseContext.profileRequires($2.loc, ENoProfile, 120, E_GL_3DL_array_objects, "arrayed type");
3512             parseContext.profileRequires($2.loc, EEsProfile, 300, 0, "arrayed type");
3513             if (parseContext.isEsProfile())
3514                 parseContext.arraySizeRequiredCheck($2.loc, *$2.arraySizes);
3515         }
3516 
3517         $$ = $3;
3518 
3519         parseContext.memberQualifierCheck($1);
3520         parseContext.voidErrorCheck($2.loc, (*$3)[0].type->getFieldName(), $2.basicType);
3521         parseContext.mergeQualifiers($2.loc, $2.qualifier, $1.qualifier, true);
3522         parseContext.precisionQualifierCheck($2.loc, $2.basicType, $2.qualifier);
3523 
3524         for (unsigned int i = 0; i < $$->size(); ++i) {
3525             TType type($2);
3526             type.setFieldName((*$$)[i].type->getFieldName());
3527             type.transferArraySizes((*$$)[i].type->getArraySizes());
3528             type.copyArrayInnerSizes($2.arraySizes);
3529             parseContext.arrayOfArrayVersionCheck((*$$)[i].loc, type.getArraySizes());
3530             (*$$)[i].type->shallowCopy(type);
3531         }
3532     }
3533     ;
3534 
3535 struct_declarator_list
3536     : struct_declarator {
3537         $$ = new TTypeList;
3538         $$->push_back($1);
3539     }
3540     | struct_declarator_list COMMA struct_declarator {
3541         $$->push_back($3);
3542     }
3543     ;
3544 
3545 struct_declarator
3546     : IDENTIFIER {
3547         $$.type = new TType(EbtVoid);
3548         $$.loc = $1.loc;
3549         $$.type->setFieldName(*$1.string);
3550     }
3551     | IDENTIFIER array_specifier {
3552         parseContext.arrayOfArrayVersionCheck($1.loc, $2.arraySizes);
3553 
3554         $$.type = new TType(EbtVoid);
3555         $$.loc = $1.loc;
3556         $$.type->setFieldName(*$1.string);
3557         $$.type->transferArraySizes($2.arraySizes);
3558     }
3559     ;
3560 
3561 initializer
3562     : assignment_expression {
3563         $$ = $1;
3564     }
3565 
3566     | LEFT_BRACE initializer_list RIGHT_BRACE {
3567         const char* initFeature = "{ } style initializers";
3568         parseContext.requireProfile($1.loc, ~EEsProfile, initFeature);
3569         parseContext.profileRequires($1.loc, ~EEsProfile, 420, E_GL_ARB_shading_language_420pack, initFeature);
3570         $$ = $2;
3571     }
3572     | LEFT_BRACE initializer_list COMMA RIGHT_BRACE {
3573         const char* initFeature = "{ } style initializers";
3574         parseContext.requireProfile($1.loc, ~EEsProfile, initFeature);
3575         parseContext.profileRequires($1.loc, ~EEsProfile, 420, E_GL_ARB_shading_language_420pack, initFeature);
3576         $$ = $2;
3577     }
3578     | LEFT_BRACE RIGHT_BRACE {
3579         const char* initFeature = "empty { } initializer";
3580         parseContext.profileRequires($1.loc, EEsProfile, 0, E_GL_EXT_null_initializer, initFeature);
3581         parseContext.profileRequires($1.loc, ~EEsProfile, 0, E_GL_EXT_null_initializer, initFeature);
3582         $$ = parseContext.intermediate.makeAggregate($1.loc);
3583     }
3584 
3585     ;
3586 
3587 
3588 initializer_list
3589     : initializer {
3590         $$ = parseContext.intermediate.growAggregate(0, $1, $1->getLoc());
3591     }
3592     | initializer_list COMMA initializer {
3593         $$ = parseContext.intermediate.growAggregate($1, $3);
3594     }
3595     ;
3596 
3597 
3598 declaration_statement
3599     : declaration { $$ = $1; }
3600     ;
3601 
3602 statement
3603     : compound_statement  { $$ = $1; }
3604     | simple_statement    { $$ = $1; }
3605     ;
3606 
3607 // Grammar Note:  labeled statements for switch statements only; 'goto' is not supported.
3608 
3609 simple_statement
3610     : declaration_statement { $$ = $1; }
3611     | expression_statement  { $$ = $1; }
3612     | selection_statement   { $$ = $1; }
3613     | switch_statement      { $$ = $1; }
3614     | case_label            { $$ = $1; }
3615     | iteration_statement   { $$ = $1; }
3616     | jump_statement        { $$ = $1; }
3617 
3618     | demote_statement      { $$ = $1; }
3619 
3620     ;
3621 
3622 
3623 demote_statement
3624     : DEMOTE SEMICOLON {
3625         parseContext.requireStage($1.loc, EShLangFragment, "demote");
3626         parseContext.requireExtensions($1.loc, 1, &E_GL_EXT_demote_to_helper_invocation, "demote");
3627         $$ = parseContext.intermediate.addBranch(EOpDemote, $1.loc);
3628     }
3629     ;
3630 
3631 
3632 compound_statement
3633     : LEFT_BRACE RIGHT_BRACE { $$ = 0; }
3634     | LEFT_BRACE {
3635         parseContext.symbolTable.push();
3636         ++parseContext.statementNestingLevel;
3637     }
3638       statement_list {
3639         parseContext.symbolTable.pop(&parseContext.defaultPrecision[0]);
3640         --parseContext.statementNestingLevel;
3641     }
3642       RIGHT_BRACE {
3643         if ($3 && $3->getAsAggregate())
3644             $3->getAsAggregate()->setOperator(EOpSequence);
3645         $$ = $3;
3646     }
3647     ;
3648 
3649 statement_no_new_scope
3650     : compound_statement_no_new_scope { $$ = $1; }
3651     | simple_statement                { $$ = $1; }
3652     ;
3653 
3654 statement_scoped
3655     : {
3656         ++parseContext.controlFlowNestingLevel;
3657     }
3658       compound_statement  {
3659         --parseContext.controlFlowNestingLevel;
3660         $$ = $2;
3661     }
3662     | {
3663         parseContext.symbolTable.push();
3664         ++parseContext.statementNestingLevel;
3665         ++parseContext.controlFlowNestingLevel;
3666     }
3667       simple_statement {
3668         parseContext.symbolTable.pop(&parseContext.defaultPrecision[0]);
3669         --parseContext.statementNestingLevel;
3670         --parseContext.controlFlowNestingLevel;
3671         $$ = $2;
3672     }
3673 
3674 compound_statement_no_new_scope
3675     // Statement that doesn't create a new scope, for selection_statement, iteration_statement
3676     : LEFT_BRACE RIGHT_BRACE {
3677         $$ = 0;
3678     }
3679     | LEFT_BRACE statement_list RIGHT_BRACE {
3680         if ($2 && $2->getAsAggregate())
3681             $2->getAsAggregate()->setOperator(EOpSequence);
3682         $$ = $2;
3683     }
3684     ;
3685 
3686 statement_list
3687     : statement {
3688         $$ = parseContext.intermediate.makeAggregate($1);
3689         if ($1 && $1->getAsBranchNode() && ($1->getAsBranchNode()->getFlowOp() == EOpCase ||
3690                                             $1->getAsBranchNode()->getFlowOp() == EOpDefault)) {
3691             parseContext.wrapupSwitchSubsequence(0, $1);
3692             $$ = 0;  // start a fresh subsequence for what's after this case
3693         }
3694     }
3695     | statement_list statement {
3696         if ($2 && $2->getAsBranchNode() && ($2->getAsBranchNode()->getFlowOp() == EOpCase ||
3697                                             $2->getAsBranchNode()->getFlowOp() == EOpDefault)) {
3698             parseContext.wrapupSwitchSubsequence($1 ? $1->getAsAggregate() : 0, $2);
3699             $$ = 0;  // start a fresh subsequence for what's after this case
3700         } else
3701             $$ = parseContext.intermediate.growAggregate($1, $2);
3702     }
3703     ;
3704 
3705 expression_statement
3706     : SEMICOLON  { $$ = 0; }
3707     | expression SEMICOLON  { $$ = static_cast<TIntermNode*>($1); }
3708     ;
3709 
3710 selection_statement
3711     : selection_statement_nonattributed {
3712         $$ = $1;
3713     }
3714 
3715     | attribute selection_statement_nonattributed {
3716         parseContext.handleSelectionAttributes(*$1, $2);
3717         $$ = $2;
3718     }
3719 
3720 
3721 selection_statement_nonattributed
3722     : IF LEFT_PAREN expression RIGHT_PAREN selection_rest_statement {
3723         parseContext.boolCheck($1.loc, $3);
3724         $$ = parseContext.intermediate.addSelection($3, $5, $1.loc);
3725     }
3726     ;
3727 
3728 selection_rest_statement
3729     : statement_scoped ELSE statement_scoped {
3730         $$.node1 = $1;
3731         $$.node2 = $3;
3732     }
3733     | statement_scoped {
3734         $$.node1 = $1;
3735         $$.node2 = 0;
3736     }
3737     ;
3738 
3739 condition
3740     // In 1996 c++ draft, conditions can include single declarations
3741     : expression {
3742         $$ = $1;
3743         parseContext.boolCheck($1->getLoc(), $1);
3744     }
3745     | fully_specified_type IDENTIFIER EQUAL initializer {
3746         parseContext.boolCheck($2.loc, $1);
3747 
3748         TType type($1);
3749         TIntermNode* initNode = parseContext.declareVariable($2.loc, *$2.string, $1, 0, $4);
3750         if (initNode)
3751             $$ = initNode->getAsTyped();
3752         else
3753             $$ = 0;
3754     }
3755     ;
3756 
3757 switch_statement
3758     : switch_statement_nonattributed {
3759         $$ = $1;
3760     }
3761 
3762     | attribute switch_statement_nonattributed {
3763         parseContext.handleSwitchAttributes(*$1, $2);
3764         $$ = $2;
3765     }
3766 
3767 
3768 switch_statement_nonattributed
3769     : SWITCH LEFT_PAREN expression RIGHT_PAREN {
3770         // start new switch sequence on the switch stack
3771         ++parseContext.controlFlowNestingLevel;
3772         ++parseContext.statementNestingLevel;
3773         parseContext.switchSequenceStack.push_back(new TIntermSequence);
3774         parseContext.switchLevel.push_back(parseContext.statementNestingLevel);
3775         parseContext.symbolTable.push();
3776     }
3777     LEFT_BRACE switch_statement_list RIGHT_BRACE {
3778         $$ = parseContext.addSwitch($1.loc, $3, $7 ? $7->getAsAggregate() : 0);
3779         delete parseContext.switchSequenceStack.back();
3780         parseContext.switchSequenceStack.pop_back();
3781         parseContext.switchLevel.pop_back();
3782         parseContext.symbolTable.pop(&parseContext.defaultPrecision[0]);
3783         --parseContext.statementNestingLevel;
3784         --parseContext.controlFlowNestingLevel;
3785     }
3786     ;
3787 
3788 switch_statement_list
3789     : /* nothing */ {
3790         $$ = 0;
3791     }
3792     | statement_list {
3793         $$ = $1;
3794     }
3795     ;
3796 
3797 case_label
3798     : CASE expression COLON {
3799         $$ = 0;
3800         if (parseContext.switchLevel.size() == 0)
3801             parseContext.error($1.loc, "cannot appear outside switch statement", "case", "");
3802         else if (parseContext.switchLevel.back() != parseContext.statementNestingLevel)
3803             parseContext.error($1.loc, "cannot be nested inside control flow", "case", "");
3804         else {
3805             parseContext.constantValueCheck($2, "case");
3806             parseContext.integerCheck($2, "case");
3807             $$ = parseContext.intermediate.addBranch(EOpCase, $2, $1.loc);
3808         }
3809     }
3810     | DEFAULT COLON {
3811         $$ = 0;
3812         if (parseContext.switchLevel.size() == 0)
3813             parseContext.error($1.loc, "cannot appear outside switch statement", "default", "");
3814         else if (parseContext.switchLevel.back() != parseContext.statementNestingLevel)
3815             parseContext.error($1.loc, "cannot be nested inside control flow", "default", "");
3816         else
3817             $$ = parseContext.intermediate.addBranch(EOpDefault, $1.loc);
3818     }
3819     ;
3820 
3821 iteration_statement
3822     : iteration_statement_nonattributed {
3823         $$ = $1;
3824     }
3825 
3826     | attribute iteration_statement_nonattributed {
3827         parseContext.handleLoopAttributes(*$1, $2);
3828         $$ = $2;
3829     }
3830 
3831 
3832 iteration_statement_nonattributed
3833     : WHILE LEFT_PAREN {
3834         if (! parseContext.limits.whileLoops)
3835             parseContext.error($1.loc, "while loops not available", "limitation", "");
3836         parseContext.symbolTable.push();
3837         ++parseContext.loopNestingLevel;
3838         ++parseContext.statementNestingLevel;
3839         ++parseContext.controlFlowNestingLevel;
3840     }
3841       condition RIGHT_PAREN statement_no_new_scope {
3842         parseContext.symbolTable.pop(&parseContext.defaultPrecision[0]);
3843         $$ = parseContext.intermediate.addLoop($6, $4, 0, true, $1.loc);
3844         --parseContext.loopNestingLevel;
3845         --parseContext.statementNestingLevel;
3846         --parseContext.controlFlowNestingLevel;
3847     }
3848     | DO {
3849         ++parseContext.loopNestingLevel;
3850         ++parseContext.statementNestingLevel;
3851         ++parseContext.controlFlowNestingLevel;
3852     }
3853       statement WHILE LEFT_PAREN expression RIGHT_PAREN SEMICOLON {
3854         if (! parseContext.limits.whileLoops)
3855             parseContext.error($1.loc, "do-while loops not available", "limitation", "");
3856 
3857         parseContext.boolCheck($8.loc, $6);
3858 
3859         $$ = parseContext.intermediate.addLoop($3, $6, 0, false, $4.loc);
3860         --parseContext.loopNestingLevel;
3861         --parseContext.statementNestingLevel;
3862         --parseContext.controlFlowNestingLevel;
3863     }
3864     | FOR LEFT_PAREN {
3865         parseContext.symbolTable.push();
3866         ++parseContext.loopNestingLevel;
3867         ++parseContext.statementNestingLevel;
3868         ++parseContext.controlFlowNestingLevel;
3869     }
3870       for_init_statement for_rest_statement RIGHT_PAREN statement_no_new_scope {
3871         parseContext.symbolTable.pop(&parseContext.defaultPrecision[0]);
3872         $$ = parseContext.intermediate.makeAggregate($4, $2.loc);
3873         TIntermLoop* forLoop = parseContext.intermediate.addLoop($7, reinterpret_cast<TIntermTyped*>($5.node1), reinterpret_cast<TIntermTyped*>($5.node2), true, $1.loc);
3874         if (! parseContext.limits.nonInductiveForLoops)
3875             parseContext.inductiveLoopCheck($1.loc, $4, forLoop);
3876         $$ = parseContext.intermediate.growAggregate($$, forLoop, $1.loc);
3877         $$->getAsAggregate()->setOperator(EOpSequence);
3878         --parseContext.loopNestingLevel;
3879         --parseContext.statementNestingLevel;
3880         --parseContext.controlFlowNestingLevel;
3881     }
3882     ;
3883 
3884 for_init_statement
3885     : expression_statement {
3886         $$ = $1;
3887     }
3888     | declaration_statement {
3889         $$ = $1;
3890     }
3891     ;
3892 
3893 conditionopt
3894     : condition {
3895         $$ = $1;
3896     }
3897     | /* May be null */ {
3898         $$ = 0;
3899     }
3900     ;
3901 
3902 for_rest_statement
3903     : conditionopt SEMICOLON {
3904         $$.node1 = $1;
3905         $$.node2 = 0;
3906     }
3907     | conditionopt SEMICOLON expression  {
3908         $$.node1 = $1;
3909         $$.node2 = $3;
3910     }
3911     ;
3912 
3913 jump_statement
3914     : CONTINUE SEMICOLON {
3915         if (parseContext.loopNestingLevel <= 0)
3916             parseContext.error($1.loc, "continue statement only allowed in loops", "", "");
3917         $$ = parseContext.intermediate.addBranch(EOpContinue, $1.loc);
3918     }
3919     | BREAK SEMICOLON {
3920         if (parseContext.loopNestingLevel + parseContext.switchSequenceStack.size() <= 0)
3921             parseContext.error($1.loc, "break statement only allowed in switch and loops", "", "");
3922         $$ = parseContext.intermediate.addBranch(EOpBreak, $1.loc);
3923     }
3924     | RETURN SEMICOLON {
3925         $$ = parseContext.intermediate.addBranch(EOpReturn, $1.loc);
3926         if (parseContext.currentFunctionType->getBasicType() != EbtVoid)
3927             parseContext.error($1.loc, "non-void function must return a value", "return", "");
3928         if (parseContext.inMain)
3929             parseContext.postEntryPointReturn = true;
3930     }
3931     | RETURN expression SEMICOLON {
3932         $$ = parseContext.handleReturnValue($1.loc, $2);
3933     }
3934     | DISCARD SEMICOLON {
3935         parseContext.requireStage($1.loc, EShLangFragment, "discard");
3936         $$ = parseContext.intermediate.addBranch(EOpKill, $1.loc);
3937     }
3938     | TERMINATE_INVOCATION SEMICOLON {
3939         parseContext.requireStage($1.loc, EShLangFragment, "terminateInvocation");
3940         $$ = parseContext.intermediate.addBranch(EOpTerminateInvocation, $1.loc);
3941     }
3942 
3943     | TERMINATE_RAY SEMICOLON {
3944         parseContext.requireStage($1.loc, EShLangAnyHit, "terminateRayEXT");
3945         $$ = parseContext.intermediate.addBranch(EOpTerminateRayKHR, $1.loc);
3946     }
3947     | IGNORE_INTERSECTION SEMICOLON {
3948         parseContext.requireStage($1.loc, EShLangAnyHit, "ignoreIntersectionEXT");
3949         $$ = parseContext.intermediate.addBranch(EOpIgnoreIntersectionKHR, $1.loc);
3950     }
3951 
3952     ;
3953 
3954 // Grammar Note:  No 'goto'.  Gotos are not supported.
3955 
3956 translation_unit
3957     : external_declaration {
3958         $$ = $1;
3959         parseContext.intermediate.setTreeRoot($$);
3960     }
3961     | translation_unit external_declaration {
3962         if ($2 != nullptr) {
3963             $$ = parseContext.intermediate.growAggregate($1, $2);
3964             parseContext.intermediate.setTreeRoot($$);
3965         }
3966     }
3967     ;
3968 
3969 external_declaration
3970     : function_definition {
3971         $$ = $1;
3972     }
3973     | declaration {
3974         $$ = $1;
3975     }
3976 
3977     | SEMICOLON {
3978         parseContext.requireProfile($1.loc, ~EEsProfile, "extraneous semicolon");
3979         parseContext.profileRequires($1.loc, ~EEsProfile, 460, nullptr, "extraneous semicolon");
3980         $$ = nullptr;
3981     }
3982 
3983     ;
3984 
3985 function_definition
3986     : function_prototype {
3987         $1.function = parseContext.handleFunctionDeclarator($1.loc, *$1.function, false /* not prototype */);
3988         $1.intermNode = parseContext.handleFunctionDefinition($1.loc, *$1.function);
3989 
3990         // For ES 100 only, according to ES shading language 100 spec: A function
3991         // body has a scope nested inside the function's definition.
3992         if (parseContext.profile == EEsProfile && parseContext.version == 100)
3993         {
3994             parseContext.symbolTable.push();
3995             ++parseContext.statementNestingLevel;
3996         }
3997     }
3998     compound_statement_no_new_scope {
3999         //   May be best done as post process phase on intermediate code
4000         if (parseContext.currentFunctionType->getBasicType() != EbtVoid && ! parseContext.functionReturnsValue)
4001             parseContext.error($1.loc, "function does not return a value:", "", $1.function->getName().c_str());
4002         parseContext.symbolTable.pop(&parseContext.defaultPrecision[0]);
4003         $$ = parseContext.intermediate.growAggregate($1.intermNode, $3);
4004         parseContext.intermediate.setAggregateOperator($$, EOpFunction, $1.function->getType(), $1.loc);
4005         $$->getAsAggregate()->setName($1.function->getMangledName().c_str());
4006 
4007         // store the pragma information for debug and optimize and other vendor specific
4008         // information. This information can be queried from the parse tree
4009         $$->getAsAggregate()->setOptimize(parseContext.contextPragma.optimize);
4010         $$->getAsAggregate()->setDebug(parseContext.contextPragma.debug);
4011         $$->getAsAggregate()->setPragmaTable(parseContext.contextPragma.pragmaTable);
4012 
4013         // Set currentFunctionType to empty pointer when goes outside of the function
4014         parseContext.currentFunctionType = nullptr;
4015 
4016         // For ES 100 only, according to ES shading language 100 spec: A function
4017         // body has a scope nested inside the function's definition.
4018         if (parseContext.profile == EEsProfile && parseContext.version == 100)
4019         {
4020             parseContext.symbolTable.pop(&parseContext.defaultPrecision[0]);
4021             --parseContext.statementNestingLevel;
4022         }
4023     }
4024     ;
4025 
4026 
4027 attribute
4028     : LEFT_BRACKET LEFT_BRACKET attribute_list RIGHT_BRACKET RIGHT_BRACKET {
4029         $$ = $3;
4030         parseContext.requireExtensions($1.loc, 1, &E_GL_EXT_control_flow_attributes, "attribute");
4031     }
4032 
4033 attribute_list
4034     : single_attribute {
4035         $$ = $1;
4036     }
4037     | attribute_list COMMA single_attribute {
4038         $$ = parseContext.mergeAttributes($1, $3);
4039     }
4040 
4041 single_attribute
4042     : IDENTIFIER {
4043         $$ = parseContext.makeAttributes(*$1.string);
4044     }
4045     | IDENTIFIER LEFT_PAREN constant_expression RIGHT_PAREN {
4046         $$ = parseContext.makeAttributes(*$1.string, $3);
4047     }
4048 
4049 
4050 %%
4051