xkeyboard-config mesa git update 2 Mar 2011

1 files changed, 1755 insertions, 0 deletions

diff --git a/mesalib/src/glsl/glsl_parser.yy b/mesalib/src/glsl/glsl_parser.yy
new file mode 100644
index 000000000..29849c1e9
--- /dev/null
+++ b/mesalib/src/glsl/glsl_parser.yy
@@ -0,0 +1,1755 @@
+%{

+/*

+ * 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();

+	}

+	;