glsl: Rename .lpp to .ll and .ypp to .yy.

SCons has built-in support for .ll and .yy, but not .lpp and .ypp. Since
there's no real benefit to using the old names, change them.

1 files changed, 1755 insertions, 0 deletions

diff --git a/src/glsl/glsl_parser.yy b/src/glsl/glsl_parser.yy
new file mode 100644
index 0000000000..2c0498ece7
--- /dev/null
+++ b/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();
+	}
+	;