| %{ |
| /* |
| * 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 <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <assert.h> |
| |
| #include "ast.h" |
| #include "glsl_parser_extras.h" |
| #include "glsl_types.h" |
| |
| #define YYLEX_PARAM state->scanner |
| |
| %} |
| |
| %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; |
| 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; |
| |
| 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 STRUCT VOID_TOK WHILE |
| %token <identifier> IDENTIFIER |
| %token <real> FLOATCONSTANT |
| %token <n> INTCONSTANT UINTCONSTANT BOOLCONSTANT |
| %token <identifier> 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 EXTENSION LINE COLON EOL INTERFACE OUTPUT |
| %token PRAGMA_DEBUG_ON PRAGMA_DEBUG_OFF |
| %token PRAGMA_OPTIMIZE_ON PRAGMA_OPTIMIZE_OFF |
| %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 SAMPLER2DRECT SAMPLER3DRECT SAMPLER2DRECTSHADOW |
| %token SIZEOF CAST NAMESPACE USING |
| |
| %token ERROR_TOK |
| |
| %token COMMON PARTITION ACTIVE SAMPLERBUFFER 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 <identifier> variable_identifier |
| %type <node> statement |
| %type <node> statement_list |
| %type <node> simple_statement |
| %type <n> precision_qualifier |
| %type <type_qualifier> type_qualifier |
| %type <type_qualifier> storage_qualifier |
| %type <type_qualifier> interpolation_qualifier |
| %type <type_qualifier> layout_qualifier |
| %type <type_qualifier> layout_qualifier_id_list layout_qualifier_id |
| %type <type_specifier> type_specifier |
| %type <type_specifier> type_specifier_no_prec |
| %type <type_specifier> type_specifier_nonarray |
| %type <n> basic_type_specifier_nonarray |
| %type <fully_specified_type> fully_specified_type |
| %type <function> function_prototype |
| %type <function> function_header |
| %type <function> function_header_with_parameters |
| %type <function> function_declarator |
| %type <parameter_declarator> parameter_declarator |
| %type <parameter_declarator> parameter_declaration |
| %type <type_qualifier> parameter_qualifier |
| %type <type_qualifier> parameter_type_qualifier |
| %type <type_specifier> parameter_type_specifier |
| %type <function_definition> function_definition |
| %type <compound_statement> compound_statement_no_new_scope |
| %type <compound_statement> compound_statement |
| %type <node> statement_no_new_scope |
| %type <node> expression_statement |
| %type <expression> expression |
| %type <expression> primary_expression |
| %type <expression> assignment_expression |
| %type <expression> conditional_expression |
| %type <expression> logical_or_expression |
| %type <expression> logical_xor_expression |
| %type <expression> logical_and_expression |
| %type <expression> inclusive_or_expression |
| %type <expression> exclusive_or_expression |
| %type <expression> and_expression |
| %type <expression> equality_expression |
| %type <expression> relational_expression |
| %type <expression> shift_expression |
| %type <expression> additive_expression |
| %type <expression> multiplicative_expression |
| %type <expression> unary_expression |
| %type <expression> constant_expression |
| %type <expression> integer_expression |
| %type <expression> postfix_expression |
| %type <expression> function_call_header_with_parameters |
| %type <expression> function_call_header_no_parameters |
| %type <expression> function_call_header |
| %type <expression> function_call_generic |
| %type <expression> function_call_or_method |
| %type <expression> function_call |
| %type <n> assignment_operator |
| %type <n> unary_operator |
| %type <expression> function_identifier |
| %type <node> external_declaration |
| %type <declarator_list> init_declarator_list |
| %type <declarator_list> single_declaration |
| %type <expression> initializer |
| %type <node> declaration |
| %type <node> declaration_statement |
| %type <node> jump_statement |
| %type <struct_specifier> struct_specifier |
| %type <node> struct_declaration_list |
| %type <declarator_list> struct_declaration |
| %type <declaration> struct_declarator |
| %type <declaration> struct_declarator_list |
| %type <node> selection_statement |
| %type <selection_rest_statement> selection_rest_statement |
| %type <node> iteration_statement |
| %type <node> condition |
| %type <node> conditionopt |
| %type <node> for_init_statement |
| %type <for_rest_statement> for_rest_statement |
| %% |
| |
| translation_unit: |
| version_statement extension_statement_list |
| { |
| _mesa_glsl_initialize_types(state); |
| } |
| external_declaration_list |
| ; |
| |
| version_statement: |
| /* blank - no #version specified: defaults are already set */ |
| | VERSION INTCONSTANT EOL |
| { |
| switch ($2) { |
| case 100: |
| state->es_shader = true; |
| case 110: |
| case 120: |
| case 130: |
| /* FINISHME: Check against implementation support versions. */ |
| state->language_version = $2; |
| break; |
| default: |
| _mesa_glsl_error(& @2, state, "Shading language version" |
| "%u is not supported\n", $2); |
| break; |
| } |
| } |
| ; |
| |
| pragma_statement: |
| PRAGMA_DEBUG_ON EOL |
| | PRAGMA_DEBUG_OFF EOL |
| | PRAGMA_OPTIMIZE_ON EOL |
| | PRAGMA_OPTIMIZE_OFF EOL |
| ; |
| |
| extension_statement_list: |
| |
| | extension_statement_list extension_statement |
| ; |
| |
| extension_statement: |
| EXTENSION IDENTIFIER COLON IDENTIFIER EOL |
| { |
| if (!_mesa_glsl_process_extension($2, & @2, $4, & @4, state)) { |
| YYERROR; |
| } |
| } |
| ; |
| |
| external_declaration_list: |
| external_declaration |
| { |
| /* FINISHME: The NULL test is only required because 'precision' |
| * FINISHME: statements are not yet supported. |
| */ |
| if ($1 != NULL) |
| state->translation_unit.push_tail(& $1->link); |
| } |
| | external_declaration_list external_declaration |
| { |
| /* FINISHME: The NULL test is only required because 'precision' |
| * FINISHME: statements are not yet supported. |
| */ |
| if ($2 != NULL) |
| state->translation_unit.push_tail(& $2->link); |
| } |
| ; |
| |
| variable_identifier: |
| 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 |
| { |
| $$ = $1; |
| } |
| | postfix_expression '.' IDENTIFIER |
| { |
| void *ctx = state; |
| $$ = 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 '.' function_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); |
| } |
| | 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); |
| } |
| ; |
| |
| // 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; |
| } |
| |
| $$->expressions.push_tail(& $3->link); |
| } |
| ; |
| |
| constant_expression: |
| conditional_expression |
| ; |
| |
| declaration: |
| function_prototype ';' |
| { |
| $$ = $1; |
| } |
| | init_declarator_list ';' |
| { |
| $$ = $1; |
| } |
| | PRECISION precision_qualifier type_specifier_no_prec ';' |
| { |
| if (($3->type_specifier != ast_float) |
| && ($3->type_specifier != ast_int)) { |
| _mesa_glsl_error(& @3, state, "global precision qualifier can " |
| "only be applied to `int' or `float'\n"); |
| YYERROR; |
| } |
| |
| $$ = NULL; /* FINISHME */ |
| } |
| ; |
| |
| 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 IDENTIFIER '(' |
| { |
| void *ctx = state; |
| $$ = new(ctx) ast_function(); |
| $$->set_location(yylloc); |
| $$->return_type = $1; |
| $$->identifier = $2; |
| } |
| ; |
| |
| parameter_declarator: |
| type_specifier 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 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 ',' 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); |
| } |
| | init_declarator_list ',' 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); |
| } |
| | init_declarator_list ',' 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); |
| } |
| | init_declarator_list ',' 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); |
| } |
| | init_declarator_list ',' 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); |
| } |
| | init_declarator_list ',' 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); |
| } |
| ; |
| |
| // Grammar Note: No 'enum', or 'typedef'. |
| single_declaration: |
| fully_specified_type |
| { |
| void *ctx = state; |
| if ($1->specifier->type_specifier != ast_struct) { |
| _mesa_glsl_error(& @1, state, "empty declaration list\n"); |
| YYERROR; |
| } else { |
| $$ = new(ctx) ast_declarator_list($1); |
| $$->set_location(yylloc); |
| } |
| } |
| | fully_specified_type IDENTIFIER |
| { |
| void *ctx = state; |
| ast_declaration *decl = new(ctx) ast_declaration($2, false, NULL, NULL); |
| |
| $$ = new(ctx) ast_declarator_list($1); |
| $$->set_location(yylloc); |
| $$->declarations.push_tail(&decl->link); |
| } |
| | fully_specified_type IDENTIFIER '[' ']' |
| { |
| void *ctx = state; |
| ast_declaration *decl = new(ctx) ast_declaration($2, true, NULL, NULL); |
| |
| $$ = new(ctx) ast_declarator_list($1); |
| $$->set_location(yylloc); |
| $$->declarations.push_tail(&decl->link); |
| } |
| | fully_specified_type 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); |
| $$->declarations.push_tail(&decl->link); |
| } |
| | fully_specified_type IDENTIFIER '[' ']' '=' initializer |
| { |
| void *ctx = state; |
| ast_declaration *decl = new(ctx) ast_declaration($2, true, NULL, $6); |
| |
| $$ = new(ctx) ast_declarator_list($1); |
| $$->set_location(yylloc); |
| $$->declarations.push_tail(&decl->link); |
| } |
| | fully_specified_type 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); |
| $$->declarations.push_tail(&decl->link); |
| } |
| | fully_specified_type IDENTIFIER '=' initializer |
| { |
| void *ctx = state; |
| ast_declaration *decl = new(ctx) ast_declaration($2, false, NULL, $4); |
| |
| $$ = new(ctx) ast_declarator_list($1); |
| $$->set_location(yylloc); |
| $$->declarations.push_tail(&decl->link); |
| } |
| | INVARIANT 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; |
| } |
| |
| $$.flags.i = $1.flags.i | $3.flags.i; |
| |
| if ($1.flags.q.explicit_location) |
| $$.location = $1.location; |
| |
| if ($3.flags.q.explicit_location) |
| $$.location = $3.location; |
| } |
| ; |
| |
| layout_qualifier_id: |
| IDENTIFIER |
| { |
| bool got_one = false; |
| |
| memset(& $$, 0, sizeof($$)); |
| |
| if (state->ARB_fragment_coord_conventions_enable) { |
| if (strcmp($1, "origin_upper_left") == 0) { |
| got_one = true; |
| $$.flags.q.origin_upper_left = 1; |
| } else if (strcmp($1, "pixel_center_integer") == 0) { |
| got_one = true; |
| $$.flags.q.pixel_center_integer = 1; |
| } |
| } |
| |
| /* If the identifier didn't match any known layout identifiers, |
| * emit an error. |
| */ |
| if (!got_one) { |
| _mesa_glsl_error(& @1, state, "unrecognized layout identifier " |
| "`%s'\n", $1); |
| YYERROR; |
| } else if (state->ARB_fragment_coord_conventions_warn) { |
| _mesa_glsl_warning(& @1, state, |
| "GL_ARB_fragment_coord_conventions layout " |
| "identifier `%s' used\n", $1); |
| } |
| } |
| | IDENTIFIER '=' INTCONSTANT |
| { |
| bool got_one = false; |
| |
| memset(& $$, 0, sizeof($$)); |
| |
| if (state->ARB_explicit_attrib_location_enable) { |
| /* FINISHME: Handle 'index' once GL_ARB_blend_func_exteneded and |
| * FINISHME: GLSL 1.30 (or later) are supported. |
| */ |
| if (strcmp("location", $1) == 0) { |
| got_one = true; |
| |
| $$.flags.q.explicit_location = 1; |
| |
| if ($3 >= 0) { |
| $$.location = $3; |
| } else { |
| _mesa_glsl_error(& @3, state, |
| "invalid location %d specified\n", $3); |
| YYERROR; |
| } |
| } |
| } |
| |
| /* If the identifier didn't match any known layout identifiers, |
| * emit an error. |
| */ |
| if (!got_one) { |
| _mesa_glsl_error(& @1, state, "unrecognized layout identifier " |
| "`%s'\n", $1); |
| YYERROR; |
| } else if (state->ARB_explicit_attrib_location_warn) { |
| _mesa_glsl_warning(& @1, state, |
| "GL_ARB_explicit_attrib_location layout " |
| "identifier `%s' used\n", $1); |
| } |
| } |
| ; |
| |
| interpolation_qualifier: |
| SMOOTH |
| { |
| memset(& $$, 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(& $$, 0, sizeof($$)); |
| $$.flags.q.uniform = 1; |
| } |
| ; |
| |
| type_specifier: |
| type_specifier_no_prec |
| | precision_qualifier type_specifier_no_prec |
| { |
| $$ = $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); |
| $$->set_location(yylloc); |
| } |
| | IDENTIFIER |
| { |
| void *ctx = state; |
| $$ = new(ctx) ast_type_specifier($1); |
| $$->set_location(yylloc); |
| } |
| ; |
| |
| basic_type_specifier_nonarray: |
| VOID_TOK { $$ = ast_void; } |
| | FLOAT_TOK { $$ = ast_float; } |
| | INT_TOK { $$ = ast_int; } |
| | UINT_TOK { $$ = ast_uint; } |
| | BOOL_TOK { $$ = ast_bool; } |
| | VEC2 { $$ = ast_vec2; } |
| | VEC3 { $$ = ast_vec3; } |
| | VEC4 { $$ = ast_vec4; } |
| | BVEC2 { $$ = ast_bvec2; } |
| | BVEC3 { $$ = ast_bvec3; } |
| | BVEC4 { $$ = ast_bvec4; } |
| | IVEC2 { $$ = ast_ivec2; } |
| | IVEC3 { $$ = ast_ivec3; } |
| | IVEC4 { $$ = ast_ivec4; } |
| | UVEC2 { $$ = ast_uvec2; } |
| | UVEC3 { $$ = ast_uvec3; } |
| | UVEC4 { $$ = ast_uvec4; } |
| | MAT2X2 { $$ = ast_mat2; } |
| | MAT2X3 { $$ = ast_mat2x3; } |
| | MAT2X4 { $$ = ast_mat2x4; } |
| | MAT3X2 { $$ = ast_mat3x2; } |
| | MAT3X3 { $$ = ast_mat3; } |
| | MAT3X4 { $$ = ast_mat3x4; } |
| | MAT4X2 { $$ = ast_mat4x2; } |
| | MAT4X3 { $$ = ast_mat4x3; } |
| | MAT4X4 { $$ = ast_mat4; } |
| | SAMPLER1D { $$ = ast_sampler1d; } |
| | SAMPLER2D { $$ = ast_sampler2d; } |
| | SAMPLER2DRECT { $$ = ast_sampler2drect; } |
| | SAMPLER3D { $$ = ast_sampler3d; } |
| | SAMPLERCUBE { $$ = ast_samplercube; } |
| | SAMPLER1DSHADOW { $$ = ast_sampler1dshadow; } |
| | SAMPLER2DSHADOW { $$ = ast_sampler2dshadow; } |
| | SAMPLER2DRECTSHADOW { $$ = ast_sampler2drectshadow; } |
| | SAMPLERCUBESHADOW { $$ = ast_samplercubeshadow; } |
| | SAMPLER1DARRAY { $$ = ast_sampler1darray; } |
| | SAMPLER2DARRAY { $$ = ast_sampler2darray; } |
| | SAMPLER1DARRAYSHADOW { $$ = ast_sampler1darrayshadow; } |
| | SAMPLER2DARRAYSHADOW { $$ = ast_sampler2darrayshadow; } |
| | ISAMPLER1D { $$ = ast_isampler1d; } |
| | ISAMPLER2D { $$ = ast_isampler2d; } |
| | ISAMPLER3D { $$ = ast_isampler3d; } |
| | ISAMPLERCUBE { $$ = ast_isamplercube; } |
| | ISAMPLER1DARRAY { $$ = ast_isampler1darray; } |
| | ISAMPLER2DARRAY { $$ = ast_isampler2darray; } |
| | USAMPLER1D { $$ = ast_usampler1d; } |
| | USAMPLER2D { $$ = ast_usampler2d; } |
| | USAMPLER3D { $$ = ast_usampler3d; } |
| | USAMPLERCUBE { $$ = ast_usamplercube; } |
| | USAMPLER1DARRAY { $$ = ast_usampler1darray; } |
| | USAMPLER2DARRAY { $$ = ast_usampler2darray; } |
| ; |
| |
| precision_qualifier: |
| HIGHP { |
| if (!state->es_shader && state->language_version < 130) |
| _mesa_glsl_error(& @1, state, |
| "precision qualifier forbidden " |
| "in GLSL %d.%d (1.30 or later " |
| "required)\n", |
| state->language_version / 100, |
| state->language_version % 100); |
| |
| $$ = ast_precision_high; |
| } |
| | MEDIUMP { |
| if (!state->es_shader && state->language_version < 130) |
| _mesa_glsl_error(& @1, state, |
| "precision qualifier forbidden " |
| "in GLSL %d.%d (1.30 or later " |
| "required)\n", |
| state->language_version / 100, |
| state->language_version % 100); |
| |
| $$ = ast_precision_medium; |
| } |
| | LOWP { |
| if (!state->es_shader && state->language_version < 130) |
| _mesa_glsl_error(& @1, state, |
| "precision qualifier forbidden " |
| "in GLSL %d.%d (1.30 or later " |
| "required)\n", |
| state->language_version / 100, |
| state->language_version % 100); |
| |
| $$ = ast_precision_low; |
| } |
| ; |
| |
| struct_specifier: |
| STRUCT IDENTIFIER '{' struct_declaration_list '}' |
| { |
| void *ctx = state; |
| $$ = new(ctx) ast_struct_specifier($2, $4); |
| $$->set_location(yylloc); |
| } |
| | STRUCT '{' struct_declaration_list '}' |
| { |
| void *ctx = state; |
| $$ = new(ctx) ast_struct_specifier(NULL, $3); |
| $$->set_location(yylloc); |
| } |
| ; |
| |
| struct_declaration_list: |
| struct_declaration |
| { |
| $$ = (ast_node *) $1; |
| $1->link.self_link(); |
| } |
| | struct_declaration_list struct_declaration |
| { |
| $$ = (ast_node *) $1; |
| $$->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: |
| IDENTIFIER |
| { |
| void *ctx = state; |
| $$ = new(ctx) ast_declaration($1, false, NULL, NULL); |
| $$->set_location(yylloc); |
| } |
| | 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 { $$ = (ast_node *) $1; } |
| | simple_statement |
| ; |
| |
| simple_statement: |
| declaration_statement |
| | expression_statement |
| | selection_statement |
| | switch_statement { $$ = NULL; } |
| | case_label { $$ = NULL; } |
| | iteration_statement |
| | jump_statement |
| ; |
| |
| compound_statement: |
| '{' '}' |
| { |
| void *ctx = state; |
| $$ = new(ctx) ast_compound_statement(true, NULL); |
| $$->set_location(yylloc); |
| } |
| | '{' statement_list '}' |
| { |
| void *ctx = state; |
| $$ = new(ctx) ast_compound_statement(true, $2); |
| $$->set_location(yylloc); |
| } |
| ; |
| |
| statement_no_new_scope: |
| compound_statement_no_new_scope { $$ = (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, "<nil> statement\n"); |
| assert($1 != NULL); |
| } |
| |
| $$ = $1; |
| $$->link.self_link(); |
| } |
| | statement_list statement |
| { |
| if ($2 == NULL) { |
| _mesa_glsl_error(& @2, state, "<nil> 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 |
| { |
| $$ = (ast_node *) $1; |
| } |
| | fully_specified_type IDENTIFIER '=' initializer |
| { |
| void *ctx = state; |
| ast_declaration *decl = new(ctx) ast_declaration($2, false, NULL, $4); |
| ast_declarator_list *declarator = new(ctx) ast_declarator_list($1); |
| decl->set_location(yylloc); |
| declarator->set_location(yylloc); |
| |
| declarator->declarations.push_tail(&decl->link); |
| $$ = declarator; |
| } |
| ; |
| |
| switch_statement: |
| SWITCH '(' expression ')' compound_statement |
| ; |
| |
| case_label: |
| CASE expression ':' |
| | DEFAULT ':' |
| ; |
| |
| 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; |
| } |
| ; |
