aboutsummaryrefslogtreecommitdiff
path: root/mesalib/src/glsl
diff options
context:
space:
mode:
Diffstat (limited to 'mesalib/src/glsl')
-rw-r--r--mesalib/src/glsl/ast_to_hir.cpp10
-rw-r--r--mesalib/src/glsl/glsl_parser.yy3506
2 files changed, 1756 insertions, 1760 deletions
diff --git a/mesalib/src/glsl/ast_to_hir.cpp b/mesalib/src/glsl/ast_to_hir.cpp
index c0524bf0b..7da146119 100644
--- a/mesalib/src/glsl/ast_to_hir.cpp
+++ b/mesalib/src/glsl/ast_to_hir.cpp
@@ -2399,12 +2399,12 @@ ast_declarator_list::hir(exec_list *instructions,
decl_type = this->type->specifier->glsl_type(& type_name, state);
if (this->declarations.is_empty()) {
- /* The only valid case where the declaration list can be empty is when
- * the declaration is setting the default precision of a built-in type
- * (e.g., 'precision highp vec4;').
- */
-
if (decl_type != NULL) {
+ /* Warn if this empty declaration is not for declaring a structure.
+ */
+ if (this->type->specifier->structure == NULL) {
+ _mesa_glsl_warning(&loc, state, "empty declaration");
+ }
} else {
_mesa_glsl_error(& loc, state, "incomplete declaration");
}
diff --git a/mesalib/src/glsl/glsl_parser.yy b/mesalib/src/glsl/glsl_parser.yy
index 29849c1e9..1851f1e20 100644
--- a/mesalib/src/glsl/glsl_parser.yy
+++ b/mesalib/src/glsl/glsl_parser.yy
@@ -1,1755 +1,1751 @@
-%{
-/*
- * 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 TYPE_IDENTIFIER NEW_IDENTIFIER
-%type <identifier> any_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 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 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 <expression> method_call_generic
-%type <expression> method_call_header_with_parameters
-%type <expression> method_call_header_no_parameters
-%type <expression> method_call_header
-%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
- {
- 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 INTCONSTANT EOL
- {
- bool supported = false;
-
- switch ($2) {
- case 100:
- state->es_shader = true;
- supported = state->Const.GLSL_100ES;
- break;
- case 110:
- supported = state->Const.GLSL_110;
- break;
- case 120:
- supported = state->Const.GLSL_120;
- break;
- case 130:
- supported = state->Const.GLSL_130;
- 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);
- }
- }
- ;
-
-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 < 120) {
- _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;
- }
- ;
-
-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;
- 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 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;
- }
-
- $$.flags.i = $1.flags.i | $3.flags.i;
-
- if ($1.flags.q.explicit_location)
- $$.location = $1.location;
-
- if ($3.flags.q.explicit_location)
- $$.location = $3.location;
- }
- ;
-
-layout_qualifier_id:
- any_identifier
- {
- bool got_one = false;
-
- memset(& $$, 0, sizeof($$));
-
- /* Layout qualifiers for ARB_fragment_coord_conventions. */
- if (!got_one && state->ARB_fragment_coord_conventions_enable) {
- if (strcmp($1, "origin_upper_left") == 0) {
- got_one = true;
- $$.flags.q.origin_upper_left = 1;
- } else if (strcmp($1, "pixel_center_integer") == 0) {
- got_one = true;
- $$.flags.q.pixel_center_integer = 1;
- }
-
- if (got_one && state->ARB_fragment_coord_conventions_warn) {
- _mesa_glsl_warning(& @1, state,
- "GL_ARB_fragment_coord_conventions layout "
- "identifier `%s' used\n", $1);
- }
- }
-
- /* Layout qualifiers for AMD_conservative_depth. */
- if (!got_one && state->AMD_conservative_depth_enable) {
- if (strcmp($1, "depth_any") == 0) {
- got_one = true;
- $$.flags.q.depth_any = 1;
- } else if (strcmp($1, "depth_greater") == 0) {
- got_one = true;
- $$.flags.q.depth_greater = 1;
- } else if (strcmp($1, "depth_less") == 0) {
- got_one = true;
- $$.flags.q.depth_less = 1;
- } else if (strcmp($1, "depth_unchanged") == 0) {
- got_one = true;
- $$.flags.q.depth_unchanged = 1;
- }
-
- if (got_one && state->AMD_conservative_depth_warn) {
- _mesa_glsl_warning(& @1, state,
- "GL_AMD_conservative_depth "
- "layout qualifier `%s' is used\n", $1);
- }
- }
-
- if (!got_one) {
- _mesa_glsl_error(& @1, state, "unrecognized layout identifier "
- "`%s'\n", $1);
- YYERROR;
- }
- }
- | any_identifier '=' INTCONSTANT
- {
- bool got_one = false;
-
- memset(& $$, 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(& $$, 0, sizeof($$));
- $$.flags.q.uniform = 1;
- }
- ;
-
-type_specifier:
- type_specifier_no_prec
- {
- $$ = $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 { $$ = ast_void; }
- | FLOAT_TOK { $$ = 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 { $$ = ast_usampler2darray; }
- ;
-
-precision_qualifier:
- HIGHP {
- if (!state->es_shader && state->language_version < 130)
- _mesa_glsl_error(& @1, state,
- "precision qualifier forbidden "
- "in %s (1.30 or later "
- "required)\n",
- state->version_string);
-
- $$ = 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
- {
- $$ = (ast_node *) $1;
- $1->link.self_link();
- }
- | struct_declaration_list struct_declaration
- {
- $$ = (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;
- $$->link.insert_before(& $3->link);
- }
- ;
-
-struct_declarator:
- any_identifier
- {
- void *ctx = state;
- $$ = 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 { $$ = NULL; }
- | case_label { $$ = NULL; }
- | 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);
- $$->set_location(yylloc);
- }
- ;
-
-statement_list:
- statement
- {
- if ($1 == NULL) {
- _mesa_glsl_error(& @1, state, "<nil> statement\n");
- assert($1 != NULL);
- }
-
- $$ = $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 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);
- $$ = declarator;
- }
- ;
-
-switch_statement:
- SWITCH '(' expression ')' compound_statement
- ;
-
-case_label:
- CASE expression ':'
- | DEFAULT ':'
- ;
-
-iteration_statement:
- WHILE '(' condition ')' statement_no_new_scope
- {
- void *ctx = state;
- $$ = 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;
-
- state->symbols->pop_scope();
- }
- ;
+%{
+/*
+ * 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 TYPE_IDENTIFIER NEW_IDENTIFIER
+%type <identifier> any_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 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 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 <expression> method_call_generic
+%type <expression> method_call_header_with_parameters
+%type <expression> method_call_header_no_parameters
+%type <expression> method_call_header
+%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
+ {
+ 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 INTCONSTANT EOL
+ {
+ bool supported = false;
+
+ switch ($2) {
+ case 100:
+ state->es_shader = true;
+ supported = state->Const.GLSL_100ES;
+ break;
+ case 110:
+ supported = state->Const.GLSL_110;
+ break;
+ case 120:
+ supported = state->Const.GLSL_120;
+ break;
+ case 130:
+ supported = state->Const.GLSL_130;
+ 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);
+ }
+ }
+ ;
+
+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 < 120) {
+ _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;
+ $$ = $3;
+ }
+ ;
+
+function_prototype:
+ function_declarator ')'
+ ;
+
+function_declarator:
+ function_header
+ | function_header_with_parameters
+ ;
+
+function_header_with_parameters:
+ function_header parameter_declaration
+ {
+ $$ = $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 ')'
+ {
+ $$ = $3;
+ }
+ ;
+
+layout_qualifier_id_list:
+ layout_qualifier_id
+ | layout_qualifier_id_list ',' layout_qualifier_id
+ {
+ if (($1.flags.i & $3.flags.i) != 0) {
+ _mesa_glsl_error(& @3, state,
+ "duplicate layout qualifiers used\n");
+ YYERROR;
+ }
+
+ $$.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:
+ any_identifier
+ {
+ bool got_one = false;
+
+ memset(& $$, 0, sizeof($$));
+
+ /* Layout qualifiers for ARB_fragment_coord_conventions. */
+ if (!got_one && 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 (got_one && 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_conservative_depth. */
+ if (!got_one && state->AMD_conservative_depth_enable) {
+ if (strcmp($1, "depth_any") == 0) {
+ got_one = true;
+ $$.flags.q.depth_any = 1;
+ } else if (strcmp($1, "depth_greater") == 0) {
+ got_one = true;
+ $$.flags.q.depth_greater = 1;
+ } else if (strcmp($1, "depth_less") == 0) {
+ got_one = true;
+ $$.flags.q.depth_less = 1;
+ } else if (strcmp($1, "depth_unchanged") == 0) {
+ got_one = true;
+ $$.flags.q.depth_unchanged = 1;
+ }
+
+ if (got_one && state->AMD_conservative_depth_warn) {
+ _mesa_glsl_warning(& @1, state,
+ "GL_AMD_conservative_depth "
+ "layout qualifier `%s' is used\n", $1);
+ }
+ }
+
+ if (!got_one) {
+ _mesa_glsl_error(& @1, state, "unrecognized layout identifier "
+ "`%s'\n", $1);
+ YYERROR;
+ }
+ }
+ | any_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
+ {
+ $$ = $1;
+ }
+ | precision_qualifier type_specifier_no_prec
+ {
+ $$ = $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);
+ $$->set_location(yylloc);
+ }
+ ;
+
+basic_type_specifier_nonarray:
+ VOID_TOK { $$ = 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 %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);
+ $$->set_location(yylloc);
+ }
+ ;
+
+struct_declaration_list:
+ struct_declaration
+ {
+ $$ = (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:
+ 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 { $$ = (ast_node *) $1; }
+ | simple_statement
+ ;
+
+simple_statement:
+ declaration_statement
+ | expression_statement
+ | selection_statement
+ | switch_statement { $$ = NULL; }
+ | case_label { $$ = NULL; }
+ | iteration_statement
+ | jump_statement
+ ;
+
+compound_statement:
+ '{' '}'
+ {
+ void *ctx = state;
+ $$ = 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, "<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
+ {
+ $$ = (ast_node *) $1;
+ }
+ | fully_specified_type any_identifier '=' initializer
+ {
+ void *ctx = state;
+ ast_declaration *decl = new(ctx) ast_declaration($2, false, NULL, $4);
+ ast_declarator_list *declarator = new(ctx) ast_declarator_list($1);
+ decl->set_location(yylloc);
+ declarator->set_location(yylloc);
+
+ declarator->declarations.push_tail(&decl->link);
+ $$ = declarator;
+ }
+ ;
+
+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;
+
+ state->symbols->pop_scope();
+ }
+ ;
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-03 06:49:17 +0000