%{ /* * Copyright © 2008, 2009 Intel Corporation * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice (including the next * paragraph) shall be included in all copies or substantial portions of the * Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER * DEALINGS IN THE SOFTWARE. */ #include #include #include #include #include "ast.h" #include "glsl_parser_extras.h" #include "glsl_types.h" #include "main/context.h" #define YYLEX_PARAM state->scanner #undef yyerror static void yyerror(YYLTYPE *loc, _mesa_glsl_parse_state *st, const char *msg) { _mesa_glsl_error(loc, st, "%s", msg); } %} %pure-parser %error-verbose %locations %initial-action { @$.first_line = 1; @$.first_column = 1; @$.last_line = 1; @$.last_column = 1; @$.source = 0; } %lex-param {void *scanner} %parse-param {struct _mesa_glsl_parse_state *state} %union { int n; float real; const char *identifier; struct ast_type_qualifier type_qualifier; ast_node *node; ast_type_specifier *type_specifier; ast_fully_specified_type *fully_specified_type; ast_function *function; ast_parameter_declarator *parameter_declarator; ast_function_definition *function_definition; ast_compound_statement *compound_statement; ast_expression *expression; ast_declarator_list *declarator_list; ast_struct_specifier *struct_specifier; ast_declaration *declaration; ast_switch_body *switch_body; ast_case_label *case_label; ast_case_label_list *case_label_list; ast_case_statement *case_statement; ast_case_statement_list *case_statement_list; struct { ast_node *cond; ast_expression *rest; } for_rest_statement; struct { ast_node *then_statement; ast_node *else_statement; } selection_rest_statement; } %token ATTRIBUTE CONST_TOK BOOL_TOK FLOAT_TOK INT_TOK UINT_TOK %token BREAK CONTINUE DO ELSE FOR IF DISCARD RETURN SWITCH CASE DEFAULT %token BVEC2 BVEC3 BVEC4 IVEC2 IVEC3 IVEC4 UVEC2 UVEC3 UVEC4 VEC2 VEC3 VEC4 %token CENTROID IN_TOK OUT_TOK INOUT_TOK UNIFORM VARYING %token NOPERSPECTIVE FLAT SMOOTH %token MAT2X2 MAT2X3 MAT2X4 %token MAT3X2 MAT3X3 MAT3X4 %token MAT4X2 MAT4X3 MAT4X4 %token SAMPLER1D SAMPLER2D SAMPLER3D SAMPLERCUBE SAMPLER1DSHADOW SAMPLER2DSHADOW %token SAMPLERCUBESHADOW SAMPLER1DARRAY SAMPLER2DARRAY SAMPLER1DARRAYSHADOW %token SAMPLER2DARRAYSHADOW ISAMPLER1D ISAMPLER2D ISAMPLER3D ISAMPLERCUBE %token ISAMPLER1DARRAY ISAMPLER2DARRAY USAMPLER1D USAMPLER2D USAMPLER3D %token USAMPLERCUBE USAMPLER1DARRAY USAMPLER2DARRAY %token SAMPLER2DRECT ISAMPLER2DRECT USAMPLER2DRECT SAMPLER2DRECTSHADOW %token SAMPLERBUFFER ISAMPLERBUFFER USAMPLERBUFFER %token SAMPLEREXTERNALOES %token STRUCT VOID_TOK WHILE %token IDENTIFIER TYPE_IDENTIFIER NEW_IDENTIFIER %type any_identifier %token FLOATCONSTANT %token INTCONSTANT UINTCONSTANT BOOLCONSTANT %token FIELD_SELECTION %token LEFT_OP RIGHT_OP %token INC_OP DEC_OP LE_OP GE_OP EQ_OP NE_OP %token AND_OP OR_OP XOR_OP MUL_ASSIGN DIV_ASSIGN ADD_ASSIGN %token MOD_ASSIGN LEFT_ASSIGN RIGHT_ASSIGN AND_ASSIGN XOR_ASSIGN OR_ASSIGN %token SUB_ASSIGN %token INVARIANT %token LOWP MEDIUMP HIGHP SUPERP PRECISION %token VERSION_TOK EXTENSION LINE COLON EOL INTERFACE OUTPUT %token PRAGMA_DEBUG_ON PRAGMA_DEBUG_OFF %token PRAGMA_OPTIMIZE_ON PRAGMA_OPTIMIZE_OFF %token PRAGMA_INVARIANT_ALL %token LAYOUT_TOK /* Reserved words that are not actually used in the grammar. */ %token ASM CLASS UNION ENUM TYPEDEF TEMPLATE THIS PACKED_TOK GOTO %token INLINE_TOK NOINLINE VOLATILE PUBLIC_TOK STATIC EXTERN EXTERNAL %token LONG_TOK SHORT_TOK DOUBLE_TOK HALF FIXED_TOK UNSIGNED INPUT_TOK OUPTUT %token HVEC2 HVEC3 HVEC4 DVEC2 DVEC3 DVEC4 FVEC2 FVEC3 FVEC4 %token SAMPLER3DRECT %token SIZEOF CAST NAMESPACE USING %token ERROR_TOK %token COMMON PARTITION ACTIVE FILTER %token IMAGE1D IMAGE2D IMAGE3D IMAGECUBE IMAGE1DARRAY IMAGE2DARRAY %token IIMAGE1D IIMAGE2D IIMAGE3D IIMAGECUBE IIMAGE1DARRAY IIMAGE2DARRAY %token UIMAGE1D UIMAGE2D UIMAGE3D UIMAGECUBE UIMAGE1DARRAY UIMAGE2DARRAY %token IMAGE1DSHADOW IMAGE2DSHADOW IMAGEBUFFER IIMAGEBUFFER UIMAGEBUFFER %token IMAGE1DARRAYSHADOW IMAGE2DARRAYSHADOW %token ROW_MAJOR %type variable_identifier %type statement %type statement_list %type simple_statement %type precision_qualifier %type type_qualifier %type storage_qualifier %type interpolation_qualifier %type layout_qualifier %type layout_qualifier_id_list layout_qualifier_id %type uniform_block_layout_qualifier %type type_specifier %type type_specifier_no_prec %type type_specifier_nonarray %type basic_type_specifier_nonarray %type fully_specified_type %type function_prototype %type function_header %type function_header_with_parameters %type function_declarator %type parameter_declarator %type parameter_declaration %type parameter_qualifier %type parameter_type_qualifier %type parameter_type_specifier %type function_definition %type compound_statement_no_new_scope %type compound_statement %type statement_no_new_scope %type expression_statement %type expression %type primary_expression %type assignment_expression %type conditional_expression %type logical_or_expression %type logical_xor_expression %type logical_and_expression %type inclusive_or_expression %type exclusive_or_expression %type and_expression %type equality_expression %type relational_expression %type shift_expression %type additive_expression %type multiplicative_expression %type unary_expression %type constant_expression %type integer_expression %type postfix_expression %type function_call_header_with_parameters %type function_call_header_no_parameters %type function_call_header %type function_call_generic %type function_call_or_method %type function_call %type method_call_generic %type method_call_header_with_parameters %type method_call_header_no_parameters %type method_call_header %type assignment_operator %type unary_operator %type function_identifier %type external_declaration %type init_declarator_list %type single_declaration %type initializer %type declaration %type declaration_statement %type jump_statement %type uniform_block %type struct_specifier %type struct_declaration_list %type struct_declaration %type struct_declarator %type struct_declarator_list %type member_list %type member_declaration %type selection_statement %type selection_rest_statement %type switch_statement %type switch_body %type case_label_list %type case_label %type case_statement %type case_statement_list %type iteration_statement %type condition %type conditionopt %type for_init_statement %type for_rest_statement %% translation_unit: version_statement extension_statement_list { _mesa_glsl_initialize_types(state); } external_declaration_list { delete state->symbols; state->symbols = new(ralloc_parent(state)) glsl_symbol_table; _mesa_glsl_initialize_types(state); } ; version_statement: /* blank - no #version specified: defaults are already set */ | VERSION_TOK INTCONSTANT EOL { bool supported = false; switch ($2) { case 100: state->es_shader = true; supported = state->ctx->API == API_OPENGLES2 || state->ctx->Extensions.ARB_ES2_compatibility; break; case 110: case 120: /* FINISHME: Once the OpenGL 3.0 'forward compatible' context or * the OpenGL 3.2 Core context is supported, this logic will need * change. Older versions of GLSL are no longer supported * outside the compatibility contexts of 3.x. */ case 130: case 140: case 150: case 330: case 400: case 410: case 420: supported = _mesa_is_desktop_gl(state->ctx) && ((unsigned) $2) <= state->ctx->Const.GLSLVersion; break; default: supported = false; break; } state->language_version = $2; state->version_string = ralloc_asprintf(state, "GLSL%s %d.%02d", state->es_shader ? " ES" : "", state->language_version / 100, state->language_version % 100); if (!supported) { _mesa_glsl_error(& @2, state, "%s is not supported. " "Supported versions are: %s\n", state->version_string, state->supported_version_string); } if (state->language_version >= 140) { state->ARB_uniform_buffer_object_enable = true; } } ; pragma_statement: PRAGMA_DEBUG_ON EOL | PRAGMA_DEBUG_OFF EOL | PRAGMA_OPTIMIZE_ON EOL | PRAGMA_OPTIMIZE_OFF EOL | PRAGMA_INVARIANT_ALL EOL { if (state->language_version == 110) { _mesa_glsl_warning(& @1, state, "pragma `invariant(all)' not supported in %s", state->version_string); } else { state->all_invariant = true; } } ; extension_statement_list: | extension_statement_list extension_statement ; any_identifier: IDENTIFIER | TYPE_IDENTIFIER | NEW_IDENTIFIER ; extension_statement: EXTENSION any_identifier COLON any_identifier EOL { if (!_mesa_glsl_process_extension($2, & @2, $4, & @4, state)) { YYERROR; } } ; external_declaration_list: external_declaration { /* FINISHME: The NULL test is required because pragmas are set to * FINISHME: NULL. (See production rule for external_declaration.) */ if ($1 != NULL) state->translation_unit.push_tail(& $1->link); } | external_declaration_list external_declaration { /* FINISHME: The NULL test is required because pragmas are set to * FINISHME: NULL. (See production rule for external_declaration.) */ if ($2 != NULL) state->translation_unit.push_tail(& $2->link); } ; variable_identifier: IDENTIFIER | NEW_IDENTIFIER ; primary_expression: variable_identifier { void *ctx = state; $$ = new(ctx) ast_expression(ast_identifier, NULL, NULL, NULL); $$->set_location(yylloc); $$->primary_expression.identifier = $1; } | INTCONSTANT { void *ctx = state; $$ = new(ctx) ast_expression(ast_int_constant, NULL, NULL, NULL); $$->set_location(yylloc); $$->primary_expression.int_constant = $1; } | UINTCONSTANT { void *ctx = state; $$ = new(ctx) ast_expression(ast_uint_constant, NULL, NULL, NULL); $$->set_location(yylloc); $$->primary_expression.uint_constant = $1; } | FLOATCONSTANT { void *ctx = state; $$ = new(ctx) ast_expression(ast_float_constant, NULL, NULL, NULL); $$->set_location(yylloc); $$->primary_expression.float_constant = $1; } | BOOLCONSTANT { void *ctx = state; $$ = new(ctx) ast_expression(ast_bool_constant, NULL, NULL, NULL); $$->set_location(yylloc); $$->primary_expression.bool_constant = $1; } | '(' expression ')' { $$ = $2; } ; postfix_expression: primary_expression | postfix_expression '[' integer_expression ']' { void *ctx = state; $$ = new(ctx) ast_expression(ast_array_index, $1, $3, NULL); $$->set_location(yylloc); } | function_call { $$ = $1; } | postfix_expression '.' any_identifier { void *ctx = state; $$ = new(ctx) ast_expression(ast_field_selection, $1, NULL, NULL); $$->set_location(yylloc); $$->primary_expression.identifier = $3; } | postfix_expression INC_OP { void *ctx = state; $$ = new(ctx) ast_expression(ast_post_inc, $1, NULL, NULL); $$->set_location(yylloc); } | postfix_expression DEC_OP { void *ctx = state; $$ = new(ctx) ast_expression(ast_post_dec, $1, NULL, NULL); $$->set_location(yylloc); } ; integer_expression: expression ; function_call: function_call_or_method ; function_call_or_method: function_call_generic | postfix_expression '.' method_call_generic { void *ctx = state; $$ = new(ctx) ast_expression(ast_field_selection, $1, $3, NULL); $$->set_location(yylloc); } ; function_call_generic: function_call_header_with_parameters ')' | function_call_header_no_parameters ')' ; function_call_header_no_parameters: function_call_header VOID_TOK | function_call_header ; function_call_header_with_parameters: function_call_header assignment_expression { $$ = $1; $$->set_location(yylloc); $$->expressions.push_tail(& $2->link); } | function_call_header_with_parameters ',' assignment_expression { $$ = $1; $$->set_location(yylloc); $$->expressions.push_tail(& $3->link); } ; // Grammar Note: Constructors look like functions, but lexical // analysis recognized most of them as keywords. They are now // recognized through "type_specifier". function_call_header: function_identifier '(' ; function_identifier: type_specifier { void *ctx = state; $$ = new(ctx) ast_function_expression($1); $$->set_location(yylloc); } | variable_identifier { void *ctx = state; ast_expression *callee = new(ctx) ast_expression($1); $$ = new(ctx) ast_function_expression(callee); $$->set_location(yylloc); } | FIELD_SELECTION { void *ctx = state; ast_expression *callee = new(ctx) ast_expression($1); $$ = new(ctx) ast_function_expression(callee); $$->set_location(yylloc); } ; method_call_generic: method_call_header_with_parameters ')' | method_call_header_no_parameters ')' ; method_call_header_no_parameters: method_call_header VOID_TOK | method_call_header ; method_call_header_with_parameters: method_call_header assignment_expression { $$ = $1; $$->set_location(yylloc); $$->expressions.push_tail(& $2->link); } | method_call_header_with_parameters ',' assignment_expression { $$ = $1; $$->set_location(yylloc); $$->expressions.push_tail(& $3->link); } ; // Grammar Note: Constructors look like methods, but lexical // analysis recognized most of them as keywords. They are now // recognized through "type_specifier". method_call_header: variable_identifier '(' { void *ctx = state; ast_expression *callee = new(ctx) ast_expression($1); $$ = new(ctx) ast_function_expression(callee); $$->set_location(yylloc); } ; // Grammar Note: No traditional style type casts. unary_expression: postfix_expression | INC_OP unary_expression { void *ctx = state; $$ = new(ctx) ast_expression(ast_pre_inc, $2, NULL, NULL); $$->set_location(yylloc); } | DEC_OP unary_expression { void *ctx = state; $$ = new(ctx) ast_expression(ast_pre_dec, $2, NULL, NULL); $$->set_location(yylloc); } | unary_operator unary_expression { void *ctx = state; $$ = new(ctx) ast_expression($1, $2, NULL, NULL); $$->set_location(yylloc); } ; // Grammar Note: No '*' or '&' unary ops. Pointers are not supported. unary_operator: '+' { $$ = ast_plus; } | '-' { $$ = ast_neg; } | '!' { $$ = ast_logic_not; } | '~' { $$ = ast_bit_not; } ; multiplicative_expression: unary_expression | multiplicative_expression '*' unary_expression { void *ctx = state; $$ = new(ctx) ast_expression_bin(ast_mul, $1, $3); $$->set_location(yylloc); } | multiplicative_expression '/' unary_expression { void *ctx = state; $$ = new(ctx) ast_expression_bin(ast_div, $1, $3); $$->set_location(yylloc); } | multiplicative_expression '%' unary_expression { void *ctx = state; $$ = new(ctx) ast_expression_bin(ast_mod, $1, $3); $$->set_location(yylloc); } ; additive_expression: multiplicative_expression | additive_expression '+' multiplicative_expression { void *ctx = state; $$ = new(ctx) ast_expression_bin(ast_add, $1, $3); $$->set_location(yylloc); } | additive_expression '-' multiplicative_expression { void *ctx = state; $$ = new(ctx) ast_expression_bin(ast_sub, $1, $3); $$->set_location(yylloc); } ; shift_expression: additive_expression | shift_expression LEFT_OP additive_expression { void *ctx = state; $$ = new(ctx) ast_expression_bin(ast_lshift, $1, $3); $$->set_location(yylloc); } | shift_expression RIGHT_OP additive_expression { void *ctx = state; $$ = new(ctx) ast_expression_bin(ast_rshift, $1, $3); $$->set_location(yylloc); } ; relational_expression: shift_expression | relational_expression '<' shift_expression { void *ctx = state; $$ = new(ctx) ast_expression_bin(ast_less, $1, $3); $$->set_location(yylloc); } | relational_expression '>' shift_expression { void *ctx = state; $$ = new(ctx) ast_expression_bin(ast_greater, $1, $3); $$->set_location(yylloc); } | relational_expression LE_OP shift_expression { void *ctx = state; $$ = new(ctx) ast_expression_bin(ast_lequal, $1, $3); $$->set_location(yylloc); } | relational_expression GE_OP shift_expression { void *ctx = state; $$ = new(ctx) ast_expression_bin(ast_gequal, $1, $3); $$->set_location(yylloc); } ; equality_expression: relational_expression | equality_expression EQ_OP relational_expression { void *ctx = state; $$ = new(ctx) ast_expression_bin(ast_equal, $1, $3); $$->set_location(yylloc); } | equality_expression NE_OP relational_expression { void *ctx = state; $$ = new(ctx) ast_expression_bin(ast_nequal, $1, $3); $$->set_location(yylloc); } ; and_expression: equality_expression | and_expression '&' equality_expression { void *ctx = state; $$ = new(ctx) ast_expression_bin(ast_bit_and, $1, $3); $$->set_location(yylloc); } ; exclusive_or_expression: and_expression | exclusive_or_expression '^' and_expression { void *ctx = state; $$ = new(ctx) ast_expression_bin(ast_bit_xor, $1, $3); $$->set_location(yylloc); } ; inclusive_or_expression: exclusive_or_expression | inclusive_or_expression '|' exclusive_or_expression { void *ctx = state; $$ = new(ctx) ast_expression_bin(ast_bit_or, $1, $3); $$->set_location(yylloc); } ; logical_and_expression: inclusive_or_expression | logical_and_expression AND_OP inclusive_or_expression { void *ctx = state; $$ = new(ctx) ast_expression_bin(ast_logic_and, $1, $3); $$->set_location(yylloc); } ; logical_xor_expression: logical_and_expression | logical_xor_expression XOR_OP logical_and_expression { void *ctx = state; $$ = new(ctx) ast_expression_bin(ast_logic_xor, $1, $3); $$->set_location(yylloc); } ; logical_or_expression: logical_xor_expression | logical_or_expression OR_OP logical_xor_expression { void *ctx = state; $$ = new(ctx) ast_expression_bin(ast_logic_or, $1, $3); $$->set_location(yylloc); } ; conditional_expression: logical_or_expression | logical_or_expression '?' expression ':' assignment_expression { void *ctx = state; $$ = new(ctx) ast_expression(ast_conditional, $1, $3, $5); $$->set_location(yylloc); } ; assignment_expression: conditional_expression | unary_expression assignment_operator assignment_expression { void *ctx = state; $$ = new(ctx) ast_expression($2, $1, $3, NULL); $$->set_location(yylloc); } ; assignment_operator: '=' { $$ = ast_assign; } | MUL_ASSIGN { $$ = ast_mul_assign; } | DIV_ASSIGN { $$ = ast_div_assign; } | MOD_ASSIGN { $$ = ast_mod_assign; } | ADD_ASSIGN { $$ = ast_add_assign; } | SUB_ASSIGN { $$ = ast_sub_assign; } | LEFT_ASSIGN { $$ = ast_ls_assign; } | RIGHT_ASSIGN { $$ = ast_rs_assign; } | AND_ASSIGN { $$ = ast_and_assign; } | XOR_ASSIGN { $$ = ast_xor_assign; } | OR_ASSIGN { $$ = ast_or_assign; } ; expression: assignment_expression { $$ = $1; } | expression ',' assignment_expression { void *ctx = state; if ($1->oper != ast_sequence) { $$ = new(ctx) ast_expression(ast_sequence, NULL, NULL, NULL); $$->set_location(yylloc); $$->expressions.push_tail(& $1->link); } else { $$ = $1; } $$->expressions.push_tail(& $3->link); } ; constant_expression: conditional_expression ; declaration: function_prototype ';' { state->symbols->pop_scope(); $$ = $1; } | init_declarator_list ';' { $$ = $1; } | PRECISION precision_qualifier type_specifier_no_prec ';' { $3->precision = $2; $3->is_precision_statement = true; $$ = $3; } | uniform_block { $$ = $1; } ; function_prototype: function_declarator ')' ; function_declarator: function_header | function_header_with_parameters ; function_header_with_parameters: function_header parameter_declaration { $$ = $1; $$->parameters.push_tail(& $2->link); } | function_header_with_parameters ',' parameter_declaration { $$ = $1; $$->parameters.push_tail(& $3->link); } ; function_header: fully_specified_type variable_identifier '(' { void *ctx = state; $$ = new(ctx) ast_function(); $$->set_location(yylloc); $$->return_type = $1; $$->identifier = $2; state->symbols->add_function(new(state) ir_function($2)); state->symbols->push_scope(); } ; parameter_declarator: type_specifier any_identifier { void *ctx = state; $$ = new(ctx) ast_parameter_declarator(); $$->set_location(yylloc); $$->type = new(ctx) ast_fully_specified_type(); $$->type->set_location(yylloc); $$->type->specifier = $1; $$->identifier = $2; } | type_specifier any_identifier '[' constant_expression ']' { void *ctx = state; $$ = new(ctx) ast_parameter_declarator(); $$->set_location(yylloc); $$->type = new(ctx) ast_fully_specified_type(); $$->type->set_location(yylloc); $$->type->specifier = $1; $$->identifier = $2; $$->is_array = true; $$->array_size = $4; } ; parameter_declaration: parameter_type_qualifier parameter_qualifier parameter_declarator { $1.flags.i |= $2.flags.i; $$ = $3; $$->type->qualifier = $1; } | parameter_qualifier parameter_declarator { $$ = $2; $$->type->qualifier = $1; } | parameter_type_qualifier parameter_qualifier parameter_type_specifier { void *ctx = state; $1.flags.i |= $2.flags.i; $$ = new(ctx) ast_parameter_declarator(); $$->set_location(yylloc); $$->type = new(ctx) ast_fully_specified_type(); $$->type->qualifier = $1; $$->type->specifier = $3; } | parameter_qualifier parameter_type_specifier { void *ctx = state; $$ = new(ctx) ast_parameter_declarator(); $$->set_location(yylloc); $$->type = new(ctx) ast_fully_specified_type(); $$->type->qualifier = $1; $$->type->specifier = $2; } ; parameter_qualifier: /* empty */ { memset(& $$, 0, sizeof($$)); } | IN_TOK { memset(& $$, 0, sizeof($$)); $$.flags.q.in = 1; } | OUT_TOK { memset(& $$, 0, sizeof($$)); $$.flags.q.out = 1; } | INOUT_TOK { memset(& $$, 0, sizeof($$)); $$.flags.q.in = 1; $$.flags.q.out = 1; } ; parameter_type_specifier: type_specifier ; init_declarator_list: single_declaration | init_declarator_list ',' any_identifier { void *ctx = state; ast_declaration *decl = new(ctx) ast_declaration($3, false, NULL, NULL); decl->set_location(yylloc); $$ = $1; $$->declarations.push_tail(&decl->link); state->symbols->add_variable(new(state) ir_variable(NULL, $3, ir_var_auto)); } | init_declarator_list ',' any_identifier '[' ']' { void *ctx = state; ast_declaration *decl = new(ctx) ast_declaration($3, true, NULL, NULL); decl->set_location(yylloc); $$ = $1; $$->declarations.push_tail(&decl->link); state->symbols->add_variable(new(state) ir_variable(NULL, $3, ir_var_auto)); } | init_declarator_list ',' any_identifier '[' constant_expression ']' { void *ctx = state; ast_declaration *decl = new(ctx) ast_declaration($3, true, $5, NULL); decl->set_location(yylloc); $$ = $1; $$->declarations.push_tail(&decl->link); state->symbols->add_variable(new(state) ir_variable(NULL, $3, ir_var_auto)); } | init_declarator_list ',' any_identifier '[' ']' '=' initializer { void *ctx = state; ast_declaration *decl = new(ctx) ast_declaration($3, true, NULL, $7); decl->set_location(yylloc); $$ = $1; $$->declarations.push_tail(&decl->link); state->symbols->add_variable(new(state) ir_variable(NULL, $3, ir_var_auto)); } | init_declarator_list ',' any_identifier '[' constant_expression ']' '=' initializer { void *ctx = state; ast_declaration *decl = new(ctx) ast_declaration($3, true, $5, $8); decl->set_location(yylloc); $$ = $1; $$->declarations.push_tail(&decl->link); state->symbols->add_variable(new(state) ir_variable(NULL, $3, ir_var_auto)); } | init_declarator_list ',' any_identifier '=' initializer { void *ctx = state; ast_declaration *decl = new(ctx) ast_declaration($3, false, NULL, $5); decl->set_location(yylloc); $$ = $1; $$->declarations.push_tail(&decl->link); state->symbols->add_variable(new(state) ir_variable(NULL, $3, ir_var_auto)); } ; // Grammar Note: No 'enum', or 'typedef'. single_declaration: fully_specified_type { void *ctx = state; /* Empty declaration list is valid. */ $$ = new(ctx) ast_declarator_list($1); $$->set_location(yylloc); } | fully_specified_type any_identifier { void *ctx = state; ast_declaration *decl = new(ctx) ast_declaration($2, false, NULL, NULL); $$ = new(ctx) ast_declarator_list($1); $$->set_location(yylloc); $$->declarations.push_tail(&decl->link); } | fully_specified_type any_identifier '[' ']' { void *ctx = state; ast_declaration *decl = new(ctx) ast_declaration($2, true, NULL, NULL); $$ = new(ctx) ast_declarator_list($1); $$->set_location(yylloc); $$->declarations.push_tail(&decl->link); } | fully_specified_type any_identifier '[' constant_expression ']' { void *ctx = state; ast_declaration *decl = new(ctx) ast_declaration($2, true, $4, NULL); $$ = new(ctx) ast_declarator_list($1); $$->set_location(yylloc); $$->declarations.push_tail(&decl->link); } | fully_specified_type any_identifier '[' ']' '=' initializer { void *ctx = state; ast_declaration *decl = new(ctx) ast_declaration($2, true, NULL, $6); $$ = new(ctx) ast_declarator_list($1); $$->set_location(yylloc); $$->declarations.push_tail(&decl->link); } | fully_specified_type any_identifier '[' constant_expression ']' '=' initializer { void *ctx = state; ast_declaration *decl = new(ctx) ast_declaration($2, true, $4, $7); $$ = new(ctx) ast_declarator_list($1); $$->set_location(yylloc); $$->declarations.push_tail(&decl->link); } | fully_specified_type any_identifier '=' initializer { void *ctx = state; ast_declaration *decl = new(ctx) ast_declaration($2, false, NULL, $4); $$ = new(ctx) ast_declarator_list($1); $$->set_location(yylloc); $$->declarations.push_tail(&decl->link); } | INVARIANT variable_identifier // Vertex only. { void *ctx = state; ast_declaration *decl = new(ctx) ast_declaration($2, false, NULL, NULL); $$ = new(ctx) ast_declarator_list(NULL); $$->set_location(yylloc); $$->invariant = true; $$->declarations.push_tail(&decl->link); } ; fully_specified_type: type_specifier { void *ctx = state; $$ = new(ctx) ast_fully_specified_type(); $$->set_location(yylloc); $$->specifier = $1; } | type_qualifier type_specifier { void *ctx = state; $$ = new(ctx) ast_fully_specified_type(); $$->set_location(yylloc); $$->qualifier = $1; $$->specifier = $2; } ; layout_qualifier: LAYOUT_TOK '(' layout_qualifier_id_list ')' { $$ = $3; } ; layout_qualifier_id_list: layout_qualifier_id | layout_qualifier_id_list ',' layout_qualifier_id { if (($1.flags.i & $3.flags.i) != 0) { _mesa_glsl_error(& @3, state, "duplicate layout qualifiers used\n"); YYERROR; } $$ = $1; $$.flags.i |= $3.flags.i; if ($3.flags.q.explicit_location) $$.location = $3.location; if ($3.flags.q.explicit_index) $$.index = $3.index; } ; layout_qualifier_id: any_identifier { memset(& $$, 0, sizeof($$)); /* Layout qualifiers for ARB_fragment_coord_conventions. */ if (!$$.flags.i && state->ARB_fragment_coord_conventions_enable) { if (strcmp($1, "origin_upper_left") == 0) { $$.flags.q.origin_upper_left = 1; } else if (strcmp($1, "pixel_center_integer") == 0) { $$.flags.q.pixel_center_integer = 1; } if ($$.flags.i && state->ARB_fragment_coord_conventions_warn) { _mesa_glsl_warning(& @1, state, "GL_ARB_fragment_coord_conventions layout " "identifier `%s' used\n", $1); } } /* Layout qualifiers for AMD/ARB_conservative_depth. */ if (!$$.flags.i && (state->AMD_conservative_depth_enable || state->ARB_conservative_depth_enable)) { if (strcmp($1, "depth_any") == 0) { $$.flags.q.depth_any = 1; } else if (strcmp($1, "depth_greater") == 0) { $$.flags.q.depth_greater = 1; } else if (strcmp($1, "depth_less") == 0) { $$.flags.q.depth_less = 1; } else if (strcmp($1, "depth_unchanged") == 0) { $$.flags.q.depth_unchanged = 1; } if ($$.flags.i && state->AMD_conservative_depth_warn) { _mesa_glsl_warning(& @1, state, "GL_AMD_conservative_depth " "layout qualifier `%s' is used\n", $1); } if ($$.flags.i && state->ARB_conservative_depth_warn) { _mesa_glsl_warning(& @1, state, "GL_ARB_conservative_depth " "layout qualifier `%s' is used\n", $1); } } /* See also uniform_block_layout_qualifier. */ if (!$$.flags.i && state->ARB_uniform_buffer_object_enable) { if (strcmp($1, "std140") == 0) { $$.flags.q.std140 = 1; } else if (strcmp($1, "shared") == 0) { $$.flags.q.shared = 1; } else if (strcmp($1, "column_major") == 0) { $$.flags.q.column_major = 1; } if ($$.flags.i && state->ARB_uniform_buffer_object_warn) { _mesa_glsl_warning(& @1, state, "#version 140 / GL_ARB_uniform_buffer_object " "layout qualifier `%s' is used\n", $1); } } if (!$$.flags.i) { _mesa_glsl_error(& @1, state, "unrecognized layout identifier " "`%s'\n", $1); YYERROR; } } | any_identifier '=' INTCONSTANT { memset(& $$, 0, sizeof($$)); if (state->ARB_explicit_attrib_location_enable) { /* FINISHME: Handle 'index' once GL_ARB_blend_func_exteneded and * FINISHME: GLSL 1.30 (or later) are supported. */ if (strcmp("location", $1) == 0) { $$.flags.q.explicit_location = 1; if ($3 >= 0) { $$.location = $3; } else { _mesa_glsl_error(& @3, state, "invalid location %d specified\n", $3); YYERROR; } } if (strcmp("index", $1) == 0) { $$.flags.q.explicit_index = 1; if ($3 >= 0) { $$.index = $3; } else { _mesa_glsl_error(& @3, state, "invalid index %d specified\n", $3); YYERROR; } } } /* If the identifier didn't match any known layout identifiers, * emit an error. */ if (!$$.flags.i) { _mesa_glsl_error(& @1, state, "unrecognized layout identifier " "`%s'\n", $1); YYERROR; } else if (state->ARB_explicit_attrib_location_warn) { _mesa_glsl_warning(& @1, state, "GL_ARB_explicit_attrib_location layout " "identifier `%s' used\n", $1); } } | uniform_block_layout_qualifier { $$ = $1; /* Layout qualifiers for ARB_uniform_buffer_object. */ if (!state->ARB_uniform_buffer_object_enable) { _mesa_glsl_error(& @1, state, "#version 140 / GL_ARB_uniform_buffer_object " "layout qualifier `%s' is used\n", $1); } else if (state->ARB_uniform_buffer_object_warn) { _mesa_glsl_warning(& @1, state, "#version 140 / GL_ARB_uniform_buffer_object " "layout qualifier `%s' is used\n", $1); } } ; /* This is a separate language rule because we parse these as tokens * (due to them being reserved keywords) instead of identifiers like * most qualifiers. See the any_identifier path of * layout_qualifier_id for the others. */ uniform_block_layout_qualifier: ROW_MAJOR { memset(& $$, 0, sizeof($$)); $$.flags.q.row_major = 1; } | PACKED_TOK { memset(& $$, 0, sizeof($$)); $$.flags.q.packed = 1; } ; interpolation_qualifier: SMOOTH { memset(& $$, 0, sizeof($$)); $$.flags.q.smooth = 1; } | FLAT { memset(& $$, 0, sizeof($$)); $$.flags.q.flat = 1; } | NOPERSPECTIVE { memset(& $$, 0, sizeof($$)); $$.flags.q.noperspective = 1; } ; parameter_type_qualifier: CONST_TOK { memset(& $$, 0, sizeof($$)); $$.flags.q.constant = 1; } ; type_qualifier: storage_qualifier | layout_qualifier | layout_qualifier storage_qualifier { $$ = $1; $$.flags.i |= $2.flags.i; } | interpolation_qualifier | interpolation_qualifier storage_qualifier { $$ = $1; $$.flags.i |= $2.flags.i; } | INVARIANT storage_qualifier { $$ = $2; $$.flags.q.invariant = 1; } | INVARIANT interpolation_qualifier storage_qualifier { $$ = $2; $$.flags.i |= $3.flags.i; $$.flags.q.invariant = 1; } | INVARIANT { memset(& $$, 0, sizeof($$)); $$.flags.q.invariant = 1; } ; storage_qualifier: CONST_TOK { memset(& $$, 0, sizeof($$)); $$.flags.q.constant = 1; } | ATTRIBUTE { memset(& $$, 0, sizeof($$)); $$.flags.q.attribute = 1; } | VARYING { memset(& $$, 0, sizeof($$)); $$.flags.q.varying = 1; } | CENTROID VARYING { memset(& $$, 0, sizeof($$)); $$.flags.q.centroid = 1; $$.flags.q.varying = 1; } | IN_TOK { memset(& $$, 0, sizeof($$)); $$.flags.q.in = 1; } | OUT_TOK { memset(& $$, 0, sizeof($$)); $$.flags.q.out = 1; } | CENTROID IN_TOK { memset(& $$, 0, sizeof($$)); $$.flags.q.centroid = 1; $$.flags.q.in = 1; } | CENTROID OUT_TOK { memset(& $$, 0, sizeof($$)); $$.flags.q.centroid = 1; $$.flags.q.out = 1; } | UNIFORM { memset(& $$, 0, sizeof($$)); $$.flags.q.uniform = 1; } ; type_specifier: type_specifier_no_prec { $$ = $1; } | precision_qualifier type_specifier_no_prec { $$ = $2; $$->precision = $1; } ; type_specifier_no_prec: type_specifier_nonarray | type_specifier_nonarray '[' ']' { $$ = $1; $$->is_array = true; $$->array_size = NULL; } | type_specifier_nonarray '[' constant_expression ']' { $$ = $1; $$->is_array = true; $$->array_size = $3; } ; type_specifier_nonarray: basic_type_specifier_nonarray { void *ctx = state; $$ = new(ctx) ast_type_specifier($1); $$->set_location(yylloc); } | struct_specifier { void *ctx = state; $$ = new(ctx) ast_type_specifier($1); $$->set_location(yylloc); } | TYPE_IDENTIFIER { void *ctx = state; $$ = new(ctx) ast_type_specifier($1); $$->set_location(yylloc); } ; basic_type_specifier_nonarray: VOID_TOK { $$ = "void"; } | FLOAT_TOK { $$ = "float"; } | INT_TOK { $$ = "int"; } | UINT_TOK { $$ = "uint"; } | BOOL_TOK { $$ = "bool"; } | VEC2 { $$ = "vec2"; } | VEC3 { $$ = "vec3"; } | VEC4 { $$ = "vec4"; } | BVEC2 { $$ = "bvec2"; } | BVEC3 { $$ = "bvec3"; } | BVEC4 { $$ = "bvec4"; } | IVEC2 { $$ = "ivec2"; } | IVEC3 { $$ = "ivec3"; } | IVEC4 { $$ = "ivec4"; } | UVEC2 { $$ = "uvec2"; } | UVEC3 { $$ = "uvec3"; } | UVEC4 { $$ = "uvec4"; } | MAT2X2 { $$ = "mat2"; } | MAT2X3 { $$ = "mat2x3"; } | MAT2X4 { $$ = "mat2x4"; } | MAT3X2 { $$ = "mat3x2"; } | MAT3X3 { $$ = "mat3"; } | MAT3X4 { $$ = "mat3x4"; } | MAT4X2 { $$ = "mat4x2"; } | MAT4X3 { $$ = "mat4x3"; } | MAT4X4 { $$ = "mat4"; } | SAMPLER1D { $$ = "sampler1D"; } | SAMPLER2D { $$ = "sampler2D"; } | SAMPLER2DRECT { $$ = "sampler2DRect"; } | SAMPLER3D { $$ = "sampler3D"; } | SAMPLERCUBE { $$ = "samplerCube"; } | SAMPLEREXTERNALOES { $$ = "samplerExternalOES"; } | SAMPLER1DSHADOW { $$ = "sampler1DShadow"; } | SAMPLER2DSHADOW { $$ = "sampler2DShadow"; } | SAMPLER2DRECTSHADOW { $$ = "sampler2DRectShadow"; } | SAMPLERCUBESHADOW { $$ = "samplerCubeShadow"; } | SAMPLER1DARRAY { $$ = "sampler1DArray"; } | SAMPLER2DARRAY { $$ = "sampler2DArray"; } | SAMPLER1DARRAYSHADOW { $$ = "sampler1DArrayShadow"; } | SAMPLER2DARRAYSHADOW { $$ = "sampler2DArrayShadow"; } | SAMPLERBUFFER { $$ = "samplerBuffer"; } | ISAMPLER1D { $$ = "isampler1D"; } | ISAMPLER2D { $$ = "isampler2D"; } | ISAMPLER2DRECT { $$ = "isampler2DRect"; } | ISAMPLER3D { $$ = "isampler3D"; } | ISAMPLERCUBE { $$ = "isamplerCube"; } | ISAMPLER1DARRAY { $$ = "isampler1DArray"; } | ISAMPLER2DARRAY { $$ = "isampler2DArray"; } | ISAMPLERBUFFER { $$ = "isamplerBuffer"; } | USAMPLER1D { $$ = "usampler1D"; } | USAMPLER2D { $$ = "usampler2D"; } | USAMPLER2DRECT { $$ = "usampler2DRect"; } | USAMPLER3D { $$ = "usampler3D"; } | USAMPLERCUBE { $$ = "usamplerCube"; } | USAMPLER1DARRAY { $$ = "usampler1DArray"; } | USAMPLER2DARRAY { $$ = "usampler2DArray"; } | USAMPLERBUFFER { $$ = "usamplerBuffer"; } ; precision_qualifier: HIGHP { if (!state->es_shader && state->language_version < 130) _mesa_glsl_error(& @1, state, "precision qualifier forbidden " "in %s (1.30 or later " "required)\n", state->version_string); $$ = ast_precision_high; } | MEDIUMP { if (!state->es_shader && state->language_version < 130) _mesa_glsl_error(& @1, state, "precision qualifier forbidden " "in %s (1.30 or later " "required)\n", state->version_string); $$ = ast_precision_medium; } | LOWP { if (!state->es_shader && state->language_version < 130) _mesa_glsl_error(& @1, state, "precision qualifier forbidden " "in %s (1.30 or later " "required)\n", state->version_string); $$ = ast_precision_low; } ; struct_specifier: STRUCT any_identifier '{' struct_declaration_list '}' { void *ctx = state; $$ = new(ctx) ast_struct_specifier($2, $4); $$->set_location(yylloc); state->symbols->add_type($2, glsl_type::void_type); } | STRUCT '{' struct_declaration_list '}' { void *ctx = state; $$ = new(ctx) ast_struct_specifier(NULL, $3); $$->set_location(yylloc); } ; struct_declaration_list: struct_declaration { $$ = $1; $1->link.self_link(); } | struct_declaration_list struct_declaration { $$ = $1; $$->link.insert_before(& $2->link); } ; struct_declaration: type_specifier struct_declarator_list ';' { void *ctx = state; ast_fully_specified_type *type = new(ctx) ast_fully_specified_type(); type->set_location(yylloc); type->specifier = $1; $$ = new(ctx) ast_declarator_list(type); $$->set_location(yylloc); $$->declarations.push_degenerate_list_at_head(& $2->link); } ; struct_declarator_list: struct_declarator { $$ = $1; $1->link.self_link(); } | struct_declarator_list ',' struct_declarator { $$ = $1; $$->link.insert_before(& $3->link); } ; struct_declarator: any_identifier { void *ctx = state; $$ = new(ctx) ast_declaration($1, false, NULL, NULL); $$->set_location(yylloc); state->symbols->add_variable(new(state) ir_variable(NULL, $1, ir_var_auto)); } | any_identifier '[' constant_expression ']' { void *ctx = state; $$ = new(ctx) ast_declaration($1, true, $3, NULL); $$->set_location(yylloc); } ; initializer: assignment_expression ; declaration_statement: declaration ; // Grammar Note: labeled statements for SWITCH only; 'goto' is not // supported. statement: compound_statement { $$ = (ast_node *) $1; } | simple_statement ; simple_statement: declaration_statement | expression_statement | selection_statement | switch_statement | iteration_statement | jump_statement ; compound_statement: '{' '}' { void *ctx = state; $$ = new(ctx) ast_compound_statement(true, NULL); $$->set_location(yylloc); } | '{' { state->symbols->push_scope(); } statement_list '}' { void *ctx = state; $$ = new(ctx) ast_compound_statement(true, $3); $$->set_location(yylloc); state->symbols->pop_scope(); } ; statement_no_new_scope: compound_statement_no_new_scope { $$ = (ast_node *) $1; } | simple_statement ; compound_statement_no_new_scope: '{' '}' { void *ctx = state; $$ = new(ctx) ast_compound_statement(false, NULL); $$->set_location(yylloc); } | '{' statement_list '}' { void *ctx = state; $$ = new(ctx) ast_compound_statement(false, $2); $$->set_location(yylloc); } ; statement_list: statement { if ($1 == NULL) { _mesa_glsl_error(& @1, state, " statement\n"); assert($1 != NULL); } $$ = $1; $$->link.self_link(); } | statement_list statement { if ($2 == NULL) { _mesa_glsl_error(& @2, state, " statement\n"); assert($2 != NULL); } $$ = $1; $$->link.insert_before(& $2->link); } ; expression_statement: ';' { void *ctx = state; $$ = new(ctx) ast_expression_statement(NULL); $$->set_location(yylloc); } | expression ';' { void *ctx = state; $$ = new(ctx) ast_expression_statement($1); $$->set_location(yylloc); } ; selection_statement: IF '(' expression ')' selection_rest_statement { $$ = new(state) ast_selection_statement($3, $5.then_statement, $5.else_statement); $$->set_location(yylloc); } ; selection_rest_statement: statement ELSE statement { $$.then_statement = $1; $$.else_statement = $3; } | statement { $$.then_statement = $1; $$.else_statement = NULL; } ; condition: expression { $$ = (ast_node *) $1; } | fully_specified_type any_identifier '=' initializer { void *ctx = state; ast_declaration *decl = new(ctx) ast_declaration($2, false, NULL, $4); ast_declarator_list *declarator = new(ctx) ast_declarator_list($1); decl->set_location(yylloc); declarator->set_location(yylloc); declarator->declarations.push_tail(&decl->link); $$ = declarator; } ; /* * siwtch_statement grammar is based on the syntax described in the body * of the GLSL spec, not in it's appendix!!! */ switch_statement: SWITCH '(' expression ')' switch_body { $$ = new(state) ast_switch_statement($3, $5); $$->set_location(yylloc); } ; switch_body: '{' '}' { $$ = new(state) ast_switch_body(NULL); $$->set_location(yylloc); } | '{' case_statement_list '}' { $$ = new(state) ast_switch_body($2); $$->set_location(yylloc); } ; case_label: CASE expression ':' { $$ = new(state) ast_case_label($2); $$->set_location(yylloc); } | DEFAULT ':' { $$ = new(state) ast_case_label(NULL); $$->set_location(yylloc); } ; case_label_list: case_label { ast_case_label_list *labels = new(state) ast_case_label_list(); labels->labels.push_tail(& $1->link); $$ = labels; $$->set_location(yylloc); } | case_label_list case_label { $$ = $1; $$->labels.push_tail(& $2->link); } ; case_statement: case_label_list statement { ast_case_statement *stmts = new(state) ast_case_statement($1); stmts->set_location(yylloc); stmts->stmts.push_tail(& $2->link); $$ = stmts; } | case_statement statement { $$ = $1; $$->stmts.push_tail(& $2->link); } ; case_statement_list: case_statement { ast_case_statement_list *cases= new(state) ast_case_statement_list(); cases->set_location(yylloc); cases->cases.push_tail(& $1->link); $$ = cases; } | case_statement_list case_statement { $$ = $1; $$->cases.push_tail(& $2->link); } ; iteration_statement: WHILE '(' condition ')' statement_no_new_scope { void *ctx = state; $$ = new(ctx) ast_iteration_statement(ast_iteration_statement::ast_while, NULL, $3, NULL, $5); $$->set_location(yylloc); } | DO statement WHILE '(' expression ')' ';' { void *ctx = state; $$ = new(ctx) ast_iteration_statement(ast_iteration_statement::ast_do_while, NULL, $5, NULL, $2); $$->set_location(yylloc); } | FOR '(' for_init_statement for_rest_statement ')' statement_no_new_scope { void *ctx = state; $$ = new(ctx) ast_iteration_statement(ast_iteration_statement::ast_for, $3, $4.cond, $4.rest, $6); $$->set_location(yylloc); } ; for_init_statement: expression_statement | declaration_statement ; conditionopt: condition | /* empty */ { $$ = NULL; } ; for_rest_statement: conditionopt ';' { $$.cond = $1; $$.rest = NULL; } | conditionopt ';' expression { $$.cond = $1; $$.rest = $3; } ; // Grammar Note: No 'goto'. Gotos are not supported. jump_statement: CONTINUE ';' { void *ctx = state; $$ = new(ctx) ast_jump_statement(ast_jump_statement::ast_continue, NULL); $$->set_location(yylloc); } | BREAK ';' { void *ctx = state; $$ = new(ctx) ast_jump_statement(ast_jump_statement::ast_break, NULL); $$->set_location(yylloc); } | RETURN ';' { void *ctx = state; $$ = new(ctx) ast_jump_statement(ast_jump_statement::ast_return, NULL); $$->set_location(yylloc); } | RETURN expression ';' { void *ctx = state; $$ = new(ctx) ast_jump_statement(ast_jump_statement::ast_return, $2); $$->set_location(yylloc); } | DISCARD ';' // Fragment shader only. { void *ctx = state; $$ = new(ctx) ast_jump_statement(ast_jump_statement::ast_discard, NULL); $$->set_location(yylloc); } ; external_declaration: function_definition { $$ = $1; } | declaration { $$ = $1; } | pragma_statement { $$ = NULL; } ; function_definition: function_prototype compound_statement_no_new_scope { void *ctx = state; $$ = new(ctx) ast_function_definition(); $$->set_location(yylloc); $$->prototype = $1; $$->body = $2; state->symbols->pop_scope(); } ; /* layout_qualifieropt is packed into this rule */ uniform_block: UNIFORM NEW_IDENTIFIER '{' member_list '}' ';' { void *ctx = state; ast_type_qualifier no_qual; memset(&no_qual, 0, sizeof(no_qual)); $$ = new(ctx) ast_uniform_block(no_qual, $2, $4); } | layout_qualifier UNIFORM NEW_IDENTIFIER '{' member_list '}' ';' { void *ctx = state; $$ = new(ctx) ast_uniform_block($1, $3, $5); } ; member_list: member_declaration { $$ = $1; $1->link.self_link(); } | member_declaration member_list { $$ = $1; $2->link.insert_before(& $$->link); } ; /* Specifying "uniform" inside of a uniform block is redundant. */ uniformopt: /* nothing */ | UNIFORM ; member_declaration: layout_qualifier uniformopt type_specifier struct_declarator_list ';' { void *ctx = state; ast_fully_specified_type *type = new(ctx) ast_fully_specified_type(); type->set_location(yylloc); type->qualifier = $1; type->qualifier.flags.q.uniform = true; type->specifier = $3; $$ = new(ctx) ast_declarator_list(type); $$->set_location(yylloc); $$->ubo_qualifiers_valid = true; $$->declarations.push_degenerate_list_at_head(& $4->link); } | uniformopt type_specifier struct_declarator_list ';' { void *ctx = state; ast_fully_specified_type *type = new(ctx) ast_fully_specified_type(); type->set_location(yylloc); type->qualifier.flags.q.uniform = true; type->specifier = $2; $$ = new(ctx) ast_declarator_list(type); $$->set_location(yylloc); $$->ubo_qualifiers_valid = true; $$->declarations.push_degenerate_list_at_head(& $3->link); } ;