mirror of https://gitlab.freedesktop.org/mesa/mesa
1323 lines
32 KiB
Plaintext
1323 lines
32 KiB
Plaintext
%{
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/*
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* Copyright © 2008, 2009 Intel Corporation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <assert.h>
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#include "ast.h"
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#include "glsl_parser_extras.h"
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#include "glsl_types.h"
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#define YYLEX_PARAM state->scanner
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%}
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%pure-parser
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%locations
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%error-verbose
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%lex-param {void *scanner}
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%parse-param {struct _mesa_glsl_parse_state *state}
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%name-prefix "_mesa_glsl_"
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%union {
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int n;
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float real;
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char *identifier;
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union {
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struct ast_type_qualifier q;
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unsigned i;
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} type_qualifier;
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struct ast_node *node;
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struct ast_type_specifier *type_specifier;
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struct ast_fully_specified_type *fully_specified_type;
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struct ast_function *function;
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struct ast_parameter_declarator *parameter_declarator;
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struct ast_function_definition *function_definition;
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struct ast_compound_statement *compound_statement;
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struct ast_expression *expression;
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struct ast_declarator_list *declarator_list;
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struct ast_struct_specifier *struct_specifier;
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struct ast_declaration *declaration;
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struct {
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struct ast_node *cond;
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struct ast_expression *rest;
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} for_rest_statement;
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}
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%token ATTRIBUTE CONST BOOL FLOAT INT UINT
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%token BREAK CONTINUE DO ELSE FOR IF DISCARD RETURN SWITCH CASE DEFAULT
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%token BVEC2 BVEC3 BVEC4 IVEC2 IVEC3 IVEC4 UVEC2 UVEC3 UVEC4 VEC2 VEC3 VEC4
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%token MAT2 MAT3 MAT4 CENTROID IN OUT INOUT UNIFORM VARYING
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%token NOPERSPECTIVE FLAT SMOOTH
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%token MAT2X2 MAT2X3 MAT2X4
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%token MAT3X2 MAT3X3 MAT3X4
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%token MAT4X2 MAT4X3 MAT4X4
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%token SAMPLER1D SAMPLER2D SAMPLER3D SAMPLERCUBE SAMPLER1DSHADOW SAMPLER2DSHADOW
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%token SAMPLERCUBESHADOW SAMPLER1DARRAY SAMPLER2DARRAY SAMPLER1DARRAYSHADOW
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%token SAMPLER2DARRAYSHADOW ISAMPLER1D ISAMPLER2D ISAMPLER3D ISAMPLERCUBE
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%token ISAMPLER1DARRAY ISAMPLER2DARRAY USAMPLER1D USAMPLER2D USAMPLER3D
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%token USAMPLERCUBE USAMPLER1DARRAY USAMPLER2DARRAY
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%token STRUCT VOID WHILE
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%token <identifier> IDENTIFIER
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%token <real> FLOATCONSTANT
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%token <n> INTCONSTANT UINTCONSTANT BOOLCONSTANT
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%token <identifier> FIELD_SELECTION
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%token LEFT_OP RIGHT_OP
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%token INC_OP DEC_OP LE_OP GE_OP EQ_OP NE_OP
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%token AND_OP OR_OP XOR_OP MUL_ASSIGN DIV_ASSIGN ADD_ASSIGN
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%token MOD_ASSIGN LEFT_ASSIGN RIGHT_ASSIGN AND_ASSIGN XOR_ASSIGN OR_ASSIGN
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%token SUB_ASSIGN
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%token INVARIANT
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%token HIGH_PRECISION MEDIUM_PRECISION LOW_PRECISION PRECISION
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%token VERSION EXTENSION LINE PRAGMA COLON EOL INTERFACE OUTPUT
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/* Reserved words that are not actually used in the grammar.
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*/
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%token ASM CLASS UNION ENUM TYPEDEF TEMPLATE THIS PACKED GOTO
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%token INLINE NOINLINE VOLATILE PUBLIC STATIC EXTERN EXTERNAL
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%token LONG SHORT DOUBLE HALF FIXED UNSIGNED INPUT OUPTUT
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%token HVEC2 HVEC3 HVEC4 DVEC2 DVEC3 DVEC4 FVEC2 FVEC3 FVEC4
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%token SAMPLER2DRECT SAMPLER3DRECT SAMPLER2DRECTSHADOW
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%token SIZEOF CAST NAMESPACE USING LOWP MEDIUMP HIGHP
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%type <identifier> variable_identifier
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%type <node> statement
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%type <node> statement_list
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%type <node> simple_statement
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%type <node> statement_matched
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%type <node> statement_unmatched
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%type <n> precision_qualifier
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%type <type_qualifier> type_qualifier
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%type <type_qualifier> storage_qualifier
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%type <type_qualifier> interpolation_qualifier
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%type <type_specifier> type_specifier
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%type <type_specifier> type_specifier_no_prec
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%type <type_specifier> type_specifier_nonarray
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%type <n> basic_type_specifier_nonarray
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%type <fully_specified_type> fully_specified_type
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%type <function> function_prototype
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%type <function> function_header
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%type <function> function_header_with_parameters
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%type <function> function_declarator
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%type <parameter_declarator> parameter_declarator
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%type <parameter_declarator> parameter_declaration
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%type <type_qualifier> parameter_qualifier
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%type <type_qualifier> parameter_type_qualifier
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%type <type_specifier> parameter_type_specifier
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%type <function_definition> function_definition
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%type <compound_statement> compound_statement_no_new_scope
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%type <compound_statement> compound_statement
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%type <node> statement_no_new_scope
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%type <node> expression_statement
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%type <expression> expression
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%type <expression> primary_expression
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%type <expression> assignment_expression
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%type <expression> conditional_expression
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%type <expression> logical_or_expression
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%type <expression> logical_xor_expression
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%type <expression> logical_and_expression
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%type <expression> inclusive_or_expression
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%type <expression> exclusive_or_expression
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%type <expression> and_expression
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%type <expression> equality_expression
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%type <expression> relational_expression
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%type <expression> shift_expression
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%type <expression> additive_expression
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%type <expression> multiplicative_expression
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%type <expression> unary_expression
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%type <expression> constant_expression
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%type <expression> integer_expression
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%type <expression> postfix_expression
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%type <expression> function_call_header_with_parameters
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%type <expression> function_call_header_no_parameters
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%type <expression> function_call_header
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%type <expression> function_call_generic
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%type <expression> function_call_or_method
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%type <expression> function_call
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%type <n> assignment_operator
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%type <n> unary_operator
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%type <expression> function_identifier
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%type <node> external_declaration
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%type <declarator_list> init_declarator_list
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%type <declarator_list> single_declaration
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%type <expression> initializer
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%type <node> declaration
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%type <node> declaration_statement
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%type <node> jump_statement
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%type <struct_specifier> struct_specifier
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%type <node> struct_declaration_list
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%type <declarator_list> struct_declaration
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%type <declaration> struct_declarator
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%type <declaration> struct_declarator_list
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%type <node> selection_statement_matched
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%type <node> selection_statement_unmatched
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%type <node> iteration_statement
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%type <node> condition
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%type <node> conditionopt
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%type <node> for_init_statement
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%type <for_rest_statement> for_rest_statement
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%%
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translation_unit:
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version_statement
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{
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_mesa_glsl_initialize_types(state);
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}
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extension_statement_list external_declaration_list
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{
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state->language_version = 110;
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_mesa_glsl_initialize_types(state);
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}
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extension_statement_list external_declaration_list
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;
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version_statement:
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VERSION INTCONSTANT EOL
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{
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switch ($2) {
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case 110:
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case 120:
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case 130:
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/* FINISHME: Check against implementation support versions. */
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state->language_version = $2;
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break;
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default:
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_mesa_glsl_error(& @2, state, "Shading language version"
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"%u is not supported\n", $2);
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break;
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}
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}
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;
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extension_statement_list:
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| extension_statement_list extension_statement
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;
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extension_statement:
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EXTENSION IDENTIFIER COLON IDENTIFIER EOL
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{
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if (!_mesa_glsl_process_extension($2, & @2, $4, & @4, state)) {
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YYERROR;
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}
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}
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;
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external_declaration_list:
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external_declaration
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{
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insert_at_tail(& state->translation_unit,
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(struct simple_node *) $1);
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}
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| external_declaration_list external_declaration
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{
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insert_at_tail(& state->translation_unit,
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(struct simple_node *) $2);
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}
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;
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variable_identifier:
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IDENTIFIER
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;
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primary_expression:
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variable_identifier
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{
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$$ = new ast_expression(ast_identifier, NULL, NULL, NULL);
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$$->set_location(yylloc);
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$$->primary_expression.identifier = $1;
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}
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| INTCONSTANT
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{
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$$ = new ast_expression(ast_int_constant, NULL, NULL, NULL);
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$$->set_location(yylloc);
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$$->primary_expression.int_constant = $1;
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}
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| UINTCONSTANT
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{
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$$ = new ast_expression(ast_uint_constant, NULL, NULL, NULL);
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$$->set_location(yylloc);
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$$->primary_expression.uint_constant = $1;
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}
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| FLOATCONSTANT
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{
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$$ = new ast_expression(ast_float_constant, NULL, NULL, NULL);
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$$->set_location(yylloc);
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$$->primary_expression.float_constant = $1;
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}
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| BOOLCONSTANT
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{
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$$ = new ast_expression(ast_bool_constant, NULL, NULL, NULL);
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$$->set_location(yylloc);
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$$->primary_expression.bool_constant = $1;
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}
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| '(' expression ')'
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{
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$$ = $2;
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}
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;
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postfix_expression:
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primary_expression
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| postfix_expression '[' integer_expression ']'
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{
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$$ = new ast_expression(ast_array_index, $1, $3, NULL);
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$$->set_location(yylloc);
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}
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| function_call
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{
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$$ = $1;
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}
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| postfix_expression '.' IDENTIFIER
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{
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$$ = new ast_expression(ast_field_selection, $1, NULL, NULL);
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$$->set_location(yylloc);
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$$->primary_expression.identifier = $3;
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}
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| postfix_expression INC_OP
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{
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$$ = new ast_expression(ast_post_inc, $1, NULL, NULL);
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$$->set_location(yylloc);
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}
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| postfix_expression DEC_OP
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{
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$$ = new ast_expression(ast_post_dec, $1, NULL, NULL);
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$$->set_location(yylloc);
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}
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;
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integer_expression:
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expression
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;
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function_call:
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function_call_or_method
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;
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function_call_or_method:
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function_call_generic
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| postfix_expression '.' function_call_generic
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{
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$$ = new ast_expression(ast_field_selection, $1, $3, NULL);
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$$->set_location(yylloc);
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}
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;
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function_call_generic:
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function_call_header_with_parameters ')'
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| function_call_header_no_parameters ')'
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;
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function_call_header_no_parameters:
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function_call_header VOID
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| function_call_header
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;
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function_call_header_with_parameters:
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function_call_header assignment_expression
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{
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$$ = $1;
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$$->set_location(yylloc);
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$$->subexpressions[1] = $2;
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}
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| function_call_header_with_parameters ',' assignment_expression
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{
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$$ = $1;
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$$->set_location(yylloc);
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insert_at_tail((struct simple_node *) $$->subexpressions[1],
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(struct simple_node *) $3);
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}
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;
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// Grammar Note: Constructors look like functions, but lexical
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// analysis recognized most of them as keywords. They are now
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// recognized through "type_specifier".
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function_call_header:
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function_identifier '('
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;
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function_identifier:
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type_specifier
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{
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$$ = new ast_function_expression($1);
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$$->set_location(yylloc);
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}
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| IDENTIFIER
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{
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ast_expression *callee = new ast_expression($1);
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$$ = new ast_function_expression(callee);
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$$->set_location(yylloc);
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}
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| FIELD_SELECTION
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{
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ast_expression *callee = new ast_expression($1);
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$$ = new ast_function_expression(callee);
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$$->set_location(yylloc);
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}
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;
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// Grammar Note: No traditional style type casts.
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unary_expression:
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postfix_expression
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| INC_OP unary_expression
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{
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$$ = new ast_expression(ast_pre_inc, $2, NULL, NULL);
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$$->set_location(yylloc);
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}
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| DEC_OP unary_expression
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{
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$$ = new ast_expression(ast_pre_dec, $2, NULL, NULL);
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$$->set_location(yylloc);
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}
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| unary_operator unary_expression
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{
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$$ = new ast_expression($1, $2, NULL, NULL);
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$$->set_location(yylloc);
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}
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;
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// Grammar Note: No '*' or '&' unary ops. Pointers are not supported.
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unary_operator:
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'+' { $$ = ast_plus; }
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| '-' { $$ = ast_neg; }
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| '!' { $$ = ast_logic_not; }
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| '~' { $$ = ast_bit_not; }
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;
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multiplicative_expression:
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unary_expression
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| multiplicative_expression '*' unary_expression
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{
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$$ = new ast_expression_bin(ast_mul, $1, $3);
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$$->set_location(yylloc);
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}
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| multiplicative_expression '/' unary_expression
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{
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$$ = new ast_expression_bin(ast_div, $1, $3);
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$$->set_location(yylloc);
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}
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| multiplicative_expression '%' unary_expression
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{
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$$ = new ast_expression_bin(ast_mod, $1, $3);
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$$->set_location(yylloc);
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}
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;
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|
additive_expression:
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multiplicative_expression
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| additive_expression '+' multiplicative_expression
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{
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$$ = new ast_expression_bin(ast_add, $1, $3);
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$$->set_location(yylloc);
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}
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| additive_expression '-' multiplicative_expression
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{
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$$ = new ast_expression_bin(ast_sub, $1, $3);
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$$->set_location(yylloc);
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}
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;
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shift_expression:
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additive_expression
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| shift_expression LEFT_OP additive_expression
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{
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$$ = new ast_expression_bin(ast_lshift, $1, $3);
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$$->set_location(yylloc);
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}
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| shift_expression RIGHT_OP additive_expression
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{
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$$ = new ast_expression_bin(ast_rshift, $1, $3);
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$$->set_location(yylloc);
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}
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;
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|
relational_expression:
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shift_expression
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| relational_expression '<' shift_expression
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{
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$$ = new ast_expression_bin(ast_less, $1, $3);
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$$->set_location(yylloc);
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}
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| relational_expression '>' shift_expression
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{
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$$ = new ast_expression_bin(ast_greater, $1, $3);
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$$->set_location(yylloc);
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}
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| relational_expression LE_OP shift_expression
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{
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$$ = new ast_expression_bin(ast_lequal, $1, $3);
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$$->set_location(yylloc);
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}
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| relational_expression GE_OP shift_expression
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{
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$$ = new ast_expression_bin(ast_gequal, $1, $3);
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$$->set_location(yylloc);
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}
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;
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|
equality_expression:
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relational_expression
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| equality_expression EQ_OP relational_expression
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{
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$$ = new ast_expression_bin(ast_equal, $1, $3);
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$$->set_location(yylloc);
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}
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| equality_expression NE_OP relational_expression
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{
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$$ = new ast_expression_bin(ast_nequal, $1, $3);
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$$->set_location(yylloc);
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}
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;
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|
and_expression:
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equality_expression
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| and_expression '&' equality_expression
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{
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$$ = new ast_expression_bin(ast_bit_or, $1, $3);
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$$->set_location(yylloc);
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}
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;
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exclusive_or_expression:
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and_expression
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| exclusive_or_expression '^' and_expression
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{
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$$ = new ast_expression_bin(ast_bit_xor, $1, $3);
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$$->set_location(yylloc);
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}
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;
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inclusive_or_expression:
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exclusive_or_expression
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| inclusive_or_expression '|' exclusive_or_expression
|
|
{
|
|
$$ = new ast_expression_bin(ast_bit_or, $1, $3);
|
|
$$->set_location(yylloc);
|
|
}
|
|
;
|
|
|
|
logical_and_expression:
|
|
inclusive_or_expression
|
|
| logical_and_expression AND_OP inclusive_or_expression
|
|
{
|
|
$$ = new ast_expression_bin(ast_logic_and, $1, $3);
|
|
$$->set_location(yylloc);
|
|
}
|
|
;
|
|
|
|
logical_xor_expression:
|
|
logical_and_expression
|
|
| logical_xor_expression XOR_OP logical_and_expression
|
|
{
|
|
$$ = new ast_expression_bin(ast_logic_xor, $1, $3);
|
|
$$->set_location(yylloc);
|
|
}
|
|
;
|
|
|
|
logical_or_expression:
|
|
logical_xor_expression
|
|
| logical_or_expression OR_OP logical_xor_expression
|
|
{
|
|
$$ = new ast_expression_bin(ast_logic_or, $1, $3);
|
|
$$->set_location(yylloc);
|
|
}
|
|
;
|
|
|
|
conditional_expression:
|
|
logical_or_expression
|
|
| logical_or_expression '?' expression ':' assignment_expression
|
|
{
|
|
$$ = new ast_expression(ast_conditional, $1, $3, $5);
|
|
$$->set_location(yylloc);
|
|
}
|
|
;
|
|
|
|
assignment_expression:
|
|
conditional_expression
|
|
| unary_expression assignment_operator assignment_expression
|
|
{
|
|
$$ = new ast_expression($2, $1, $3, NULL);
|
|
$$->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
|
|
{
|
|
if ($1->oper != ast_sequence) {
|
|
$$ = new ast_expression(ast_sequence, NULL, NULL, NULL);
|
|
$$->set_location(yylloc);
|
|
insert_at_tail(& $$->expressions, $1);
|
|
} else {
|
|
$$ = $1;
|
|
}
|
|
|
|
insert_at_tail(& $$->expressions, $3);
|
|
}
|
|
;
|
|
|
|
constant_expression:
|
|
conditional_expression
|
|
;
|
|
|
|
declaration:
|
|
function_prototype ';'
|
|
{
|
|
$$ = $1;
|
|
}
|
|
| init_declarator_list ';'
|
|
{
|
|
$$ = $1;
|
|
}
|
|
| PRECISION precision_qualifier type_specifier_no_prec ';'
|
|
{
|
|
$$ = NULL; /* FINISHME */
|
|
}
|
|
;
|
|
|
|
function_prototype:
|
|
function_declarator ')'
|
|
;
|
|
|
|
function_declarator:
|
|
function_header
|
|
| function_header_with_parameters
|
|
;
|
|
|
|
function_header_with_parameters:
|
|
function_header parameter_declaration
|
|
{
|
|
$$ = $1;
|
|
insert_at_tail(& $$->parameters,
|
|
(struct simple_node *) $2);
|
|
}
|
|
| function_header_with_parameters ',' parameter_declaration
|
|
{
|
|
$$ = $1;
|
|
insert_at_tail(& $$->parameters,
|
|
(struct simple_node *) $3);
|
|
}
|
|
;
|
|
|
|
function_header:
|
|
fully_specified_type IDENTIFIER '('
|
|
{
|
|
$$ = new ast_function();
|
|
$$->set_location(yylloc);
|
|
$$->return_type = $1;
|
|
$$->identifier = $2;
|
|
}
|
|
;
|
|
|
|
parameter_declarator:
|
|
type_specifier IDENTIFIER
|
|
{
|
|
$$ = new ast_parameter_declarator();
|
|
$$->set_location(yylloc);
|
|
$$->type = new ast_fully_specified_type();
|
|
$$->type->set_location(yylloc);
|
|
$$->type->specifier = $1;
|
|
$$->identifier = $2;
|
|
}
|
|
| type_specifier IDENTIFIER '[' constant_expression ']'
|
|
{
|
|
$$ = new ast_parameter_declarator();
|
|
$$->set_location(yylloc);
|
|
$$->type = new ast_fully_specified_type();
|
|
$$->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.i |= $2.i;
|
|
|
|
$$ = $3;
|
|
$$->type->qualifier = $1.q;
|
|
}
|
|
| parameter_qualifier parameter_declarator
|
|
{
|
|
$$ = $2;
|
|
$$->type->qualifier = $1.q;
|
|
}
|
|
| parameter_type_qualifier parameter_qualifier parameter_type_specifier
|
|
{
|
|
$1.i |= $2.i;
|
|
|
|
$$ = new ast_parameter_declarator();
|
|
$$->set_location(yylloc);
|
|
$$->type = new ast_fully_specified_type();
|
|
$$->type->qualifier = $1.q;
|
|
$$->type->specifier = $3;
|
|
}
|
|
| parameter_qualifier parameter_type_specifier
|
|
{
|
|
$$ = new ast_parameter_declarator();
|
|
$$->set_location(yylloc);
|
|
$$->type = new ast_fully_specified_type();
|
|
$$->type->qualifier = $1.q;
|
|
$$->type->specifier = $2;
|
|
}
|
|
;
|
|
|
|
parameter_qualifier:
|
|
/* empty */ { $$.i = 0; }
|
|
| IN { $$.i = 0; $$.q.in = 1; }
|
|
| OUT { $$.i = 0; $$.q.out = 1; }
|
|
| INOUT { $$.i = 0; $$.q.in = 1; $$.q.out = 1; }
|
|
;
|
|
|
|
parameter_type_specifier:
|
|
type_specifier
|
|
;
|
|
|
|
init_declarator_list:
|
|
single_declaration
|
|
| init_declarator_list ',' IDENTIFIER
|
|
{
|
|
ast_declaration *decl = new ast_declaration($3, false, NULL, NULL);
|
|
decl->set_location(yylloc);
|
|
|
|
$$ = $1;
|
|
insert_at_tail(& $$->declarations,
|
|
(struct simple_node *) decl);
|
|
}
|
|
| init_declarator_list ',' IDENTIFIER '[' ']'
|
|
{
|
|
ast_declaration *decl = new ast_declaration($3, true, NULL, NULL);
|
|
decl->set_location(yylloc);
|
|
|
|
$$ = $1;
|
|
insert_at_tail(& $$->declarations,
|
|
(struct simple_node *) decl);
|
|
}
|
|
| init_declarator_list ',' IDENTIFIER '[' constant_expression ']'
|
|
{
|
|
ast_declaration *decl = new ast_declaration($3, true, $5, NULL);
|
|
decl->set_location(yylloc);
|
|
|
|
$$ = $1;
|
|
insert_at_tail(& $$->declarations,
|
|
(struct simple_node *) decl);
|
|
}
|
|
| init_declarator_list ',' IDENTIFIER '[' ']' '=' initializer
|
|
{
|
|
ast_declaration *decl = new ast_declaration($3, true, NULL, $7);
|
|
decl->set_location(yylloc);
|
|
|
|
$$ = $1;
|
|
insert_at_tail(& $$->declarations,
|
|
(struct simple_node *) decl);
|
|
}
|
|
| init_declarator_list ',' IDENTIFIER '[' constant_expression ']' '=' initializer
|
|
{
|
|
ast_declaration *decl = new ast_declaration($3, true, $5, $8);
|
|
decl->set_location(yylloc);
|
|
|
|
$$ = $1;
|
|
insert_at_tail(& $$->declarations,
|
|
(struct simple_node *) decl);
|
|
}
|
|
| init_declarator_list ',' IDENTIFIER '=' initializer
|
|
{
|
|
ast_declaration *decl = new ast_declaration($3, false, NULL, $5);
|
|
decl->set_location(yylloc);
|
|
|
|
$$ = $1;
|
|
insert_at_tail(& $$->declarations,
|
|
(struct simple_node *) decl);
|
|
}
|
|
;
|
|
|
|
// Grammar Note: No 'enum', or 'typedef'.
|
|
single_declaration:
|
|
fully_specified_type
|
|
{
|
|
$$ = new ast_declarator_list($1);
|
|
$$->set_location(yylloc);
|
|
}
|
|
| fully_specified_type IDENTIFIER
|
|
{
|
|
ast_declaration *decl = new ast_declaration($2, false, NULL, NULL);
|
|
|
|
$$ = new ast_declarator_list($1);
|
|
$$->set_location(yylloc);
|
|
insert_at_tail(& $$->declarations,
|
|
(struct simple_node *) decl);
|
|
}
|
|
| fully_specified_type IDENTIFIER '[' ']'
|
|
{
|
|
ast_declaration *decl = new ast_declaration($2, true, NULL, NULL);
|
|
|
|
$$ = new ast_declarator_list($1);
|
|
$$->set_location(yylloc);
|
|
insert_at_tail(& $$->declarations,
|
|
(struct simple_node *) decl);
|
|
}
|
|
| fully_specified_type IDENTIFIER '[' constant_expression ']'
|
|
{
|
|
ast_declaration *decl = new ast_declaration($2, true, $4, NULL);
|
|
|
|
$$ = new ast_declarator_list($1);
|
|
$$->set_location(yylloc);
|
|
insert_at_tail(& $$->declarations,
|
|
(struct simple_node *) decl);
|
|
}
|
|
| fully_specified_type IDENTIFIER '[' ']' '=' initializer
|
|
{
|
|
ast_declaration *decl = new ast_declaration($2, true, NULL, $6);
|
|
|
|
$$ = new ast_declarator_list($1);
|
|
$$->set_location(yylloc);
|
|
insert_at_tail(& $$->declarations,
|
|
(struct simple_node *) decl);
|
|
}
|
|
| fully_specified_type IDENTIFIER '[' constant_expression ']' '=' initializer
|
|
{
|
|
ast_declaration *decl = new ast_declaration($2, true, $4, $7);
|
|
|
|
$$ = new ast_declarator_list($1);
|
|
$$->set_location(yylloc);
|
|
insert_at_tail(& $$->declarations,
|
|
(struct simple_node *) decl);
|
|
}
|
|
| fully_specified_type IDENTIFIER '=' initializer
|
|
{
|
|
ast_declaration *decl = new ast_declaration($2, false, NULL, $4);
|
|
|
|
$$ = new ast_declarator_list($1);
|
|
$$->set_location(yylloc);
|
|
insert_at_tail(& $$->declarations,
|
|
(struct simple_node *) decl);
|
|
}
|
|
| INVARIANT IDENTIFIER // Vertex only.
|
|
{
|
|
ast_declaration *decl = new ast_declaration($2, false, NULL, NULL);
|
|
|
|
$$ = new ast_declarator_list(NULL);
|
|
$$->set_location(yylloc);
|
|
$$->invariant = true;
|
|
|
|
insert_at_tail(& $$->declarations,
|
|
(struct simple_node *) decl);
|
|
}
|
|
;
|
|
|
|
fully_specified_type:
|
|
type_specifier
|
|
{
|
|
$$ = new ast_fully_specified_type();
|
|
$$->set_location(yylloc);
|
|
$$->specifier = $1;
|
|
}
|
|
| type_qualifier type_specifier
|
|
{
|
|
$$ = new ast_fully_specified_type();
|
|
$$->set_location(yylloc);
|
|
$$->qualifier = $1.q;
|
|
$$->specifier = $2;
|
|
}
|
|
;
|
|
|
|
interpolation_qualifier:
|
|
SMOOTH { $$.i = 0; $$.q.smooth = 1; }
|
|
| FLAT { $$.i = 0; $$.q.flat = 1; }
|
|
| NOPERSPECTIVE { $$.i = 0; $$.q.noperspective = 1; }
|
|
;
|
|
|
|
parameter_type_qualifier:
|
|
CONST { $$.i = 0; $$.q.constant = 1; }
|
|
;
|
|
|
|
type_qualifier:
|
|
storage_qualifier
|
|
| interpolation_qualifier type_qualifier
|
|
{
|
|
$$.i = $1.i | $2.i;
|
|
}
|
|
| INVARIANT type_qualifier
|
|
{
|
|
$$ = $2;
|
|
$$.q.invariant = 1;
|
|
}
|
|
;
|
|
|
|
storage_qualifier:
|
|
CONST { $$.i = 0; $$.q.constant = 1; }
|
|
| ATTRIBUTE { $$.i = 0; $$.q.attribute = 1; }
|
|
| VARYING { $$.i = 0; $$.q.varying = 1; }
|
|
| CENTROID VARYING { $$.i = 0; $$.q.centroid = 1; $$.q.varying = 1; }
|
|
| IN { $$.i = 0; $$.q.in = 1; }
|
|
| OUT { $$.i = 0; $$.q.out = 1; }
|
|
| CENTROID IN { $$.i = 0; $$.q.centroid = 1; $$.q.in = 1; }
|
|
| CENTROID OUT { $$.i = 0; $$.q.centroid = 1; $$.q.out = 1; }
|
|
| UNIFORM { $$.i = 0; $$.q.uniform = 1; }
|
|
;
|
|
|
|
type_specifier:
|
|
type_specifier_no_prec
|
|
| precision_qualifier type_specifier_no_prec
|
|
{
|
|
$$ = $2;
|
|
$$->precision = $1;
|
|
}
|
|
;
|
|
|
|
type_specifier_no_prec:
|
|
type_specifier_nonarray
|
|
| type_specifier_nonarray '[' ']'
|
|
{
|
|
$$ = $1;
|
|
$$->is_array = true;
|
|
$$->array_size = NULL;
|
|
}
|
|
| type_specifier_nonarray '[' constant_expression ']'
|
|
{
|
|
$$ = $1;
|
|
$$->is_array = true;
|
|
$$->array_size = $3;
|
|
}
|
|
;
|
|
|
|
type_specifier_nonarray:
|
|
basic_type_specifier_nonarray
|
|
{
|
|
$$ = new ast_type_specifier($1);
|
|
$$->set_location(yylloc);
|
|
}
|
|
| struct_specifier
|
|
{
|
|
$$ = new ast_type_specifier($1);
|
|
$$->set_location(yylloc);
|
|
}
|
|
| IDENTIFIER
|
|
{
|
|
$$ = new ast_type_specifier($1);
|
|
$$->set_location(yylloc);
|
|
}
|
|
;
|
|
|
|
basic_type_specifier_nonarray:
|
|
VOID { $$ = ast_void; }
|
|
| FLOAT { $$ = ast_float; }
|
|
| INT { $$ = ast_int; }
|
|
| UINT { $$ = ast_uint; }
|
|
| BOOL { $$ = 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; }
|
|
| MAT2 { $$ = ast_mat2; }
|
|
| MAT3 { $$ = ast_mat3; }
|
|
| MAT4 { $$ = ast_mat4; }
|
|
| MAT2X2 { $$ = 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 { $$ = ast_usampler2darray; }
|
|
;
|
|
|
|
precision_qualifier:
|
|
HIGH_PRECISION { $$ = ast_precision_high; }
|
|
| MEDIUM_PRECISION { $$ = ast_precision_medium; }
|
|
| LOW_PRECISION { $$ = ast_precision_low; }
|
|
;
|
|
|
|
struct_specifier:
|
|
STRUCT IDENTIFIER '{' struct_declaration_list '}'
|
|
{
|
|
$$ = new ast_struct_specifier($2, $4);
|
|
$$->set_location(yylloc);
|
|
}
|
|
| STRUCT '{' struct_declaration_list '}'
|
|
{
|
|
$$ = new ast_struct_specifier(NULL, $3);
|
|
$$->set_location(yylloc);
|
|
}
|
|
;
|
|
|
|
struct_declaration_list:
|
|
struct_declaration
|
|
{
|
|
$$ = (struct ast_node *) $1;
|
|
}
|
|
| struct_declaration_list struct_declaration
|
|
{
|
|
$$ = (struct ast_node *) $1;
|
|
insert_at_tail((struct simple_node *) $$,
|
|
(struct simple_node *) $2);
|
|
}
|
|
;
|
|
|
|
struct_declaration:
|
|
type_specifier struct_declarator_list ';'
|
|
{
|
|
ast_fully_specified_type *type = new ast_fully_specified_type();
|
|
type->set_location(yylloc);
|
|
|
|
type->specifier = $1;
|
|
$$ = new ast_declarator_list(type);
|
|
$$->set_location(yylloc);
|
|
|
|
insert_at_tail((struct simple_node *) $2,
|
|
& $$->declarations);
|
|
}
|
|
;
|
|
|
|
struct_declarator_list:
|
|
struct_declarator
|
|
| struct_declarator_list ',' struct_declarator
|
|
{
|
|
$$ = $1;
|
|
insert_at_tail((struct simple_node *) $$,
|
|
(struct simple_node *) $3);
|
|
}
|
|
;
|
|
|
|
struct_declarator:
|
|
IDENTIFIER
|
|
{
|
|
$$ = new ast_declaration($1, false, NULL, NULL);
|
|
$$->set_location(yylloc);
|
|
}
|
|
| IDENTIFIER '[' constant_expression ']'
|
|
{
|
|
$$ = new ast_declaration($1, true, $3, NULL);
|
|
$$->set_location(yylloc);
|
|
}
|
|
;
|
|
|
|
initializer:
|
|
assignment_expression
|
|
;
|
|
|
|
declaration_statement:
|
|
declaration
|
|
;
|
|
|
|
// Grammar Note: labeled statements for SWITCH only; 'goto' is not
|
|
// supported.
|
|
statement:
|
|
statement_matched
|
|
| statement_unmatched
|
|
;
|
|
|
|
statement_matched:
|
|
compound_statement { $$ = (struct ast_node *) $1; }
|
|
| simple_statement
|
|
;
|
|
|
|
statement_unmatched:
|
|
selection_statement_unmatched
|
|
;
|
|
|
|
simple_statement:
|
|
declaration_statement
|
|
| expression_statement
|
|
| selection_statement_matched
|
|
| switch_statement { $$ = NULL; }
|
|
| case_label { $$ = NULL; }
|
|
| iteration_statement
|
|
| jump_statement
|
|
;
|
|
|
|
compound_statement:
|
|
'{' '}'
|
|
{
|
|
$$ = new ast_compound_statement(true, NULL);
|
|
$$->set_location(yylloc);
|
|
}
|
|
| '{' statement_list '}'
|
|
{
|
|
$$ = new ast_compound_statement(true, $2);
|
|
$$->set_location(yylloc);
|
|
}
|
|
;
|
|
|
|
statement_no_new_scope:
|
|
compound_statement_no_new_scope { $$ = (struct ast_node *) $1; }
|
|
| simple_statement
|
|
;
|
|
|
|
compound_statement_no_new_scope:
|
|
'{' '}'
|
|
{
|
|
$$ = new ast_compound_statement(false, NULL);
|
|
$$->set_location(yylloc);
|
|
}
|
|
| '{' statement_list '}'
|
|
{
|
|
$$ = new ast_compound_statement(false, $2);
|
|
$$->set_location(yylloc);
|
|
}
|
|
;
|
|
|
|
statement_list:
|
|
statement
|
|
{
|
|
if ($1 == NULL) {
|
|
_mesa_glsl_error(& @1, state, "<nil> statement\n");
|
|
assert($1 != NULL);
|
|
}
|
|
|
|
$$ = $1;
|
|
make_empty_list((struct simple_node *) $$);
|
|
}
|
|
| statement_list statement
|
|
{
|
|
if ($2 == NULL) {
|
|
_mesa_glsl_error(& @2, state, "<nil> statement\n");
|
|
assert($2 != NULL);
|
|
}
|
|
$$ = $1;
|
|
insert_at_tail((struct simple_node *) $$,
|
|
(struct simple_node *) $2);
|
|
}
|
|
;
|
|
|
|
expression_statement:
|
|
';'
|
|
{
|
|
$$ = new ast_expression_statement(NULL);
|
|
$$->set_location(yylloc);
|
|
}
|
|
| expression ';'
|
|
{
|
|
$$ = new ast_expression_statement($1);
|
|
$$->set_location(yylloc);
|
|
}
|
|
;
|
|
|
|
selection_statement_matched:
|
|
IF '(' expression ')' statement_matched ELSE statement_matched
|
|
{
|
|
$$ = new ast_selection_statement($3, $5, $7);
|
|
$$->set_location(yylloc);
|
|
}
|
|
;
|
|
|
|
selection_statement_unmatched:
|
|
IF '(' expression ')' statement_matched
|
|
{
|
|
$$ = new ast_selection_statement($3, $5, NULL);
|
|
$$->set_location(yylloc);
|
|
}
|
|
| IF '(' expression ')' statement_unmatched
|
|
{
|
|
$$ = new ast_selection_statement($3, $5, NULL);
|
|
$$->set_location(yylloc);
|
|
}
|
|
| IF '(' expression ')' statement_matched ELSE statement_unmatched
|
|
{
|
|
$$ = new ast_selection_statement($3, $5, $7);
|
|
$$->set_location(yylloc);
|
|
}
|
|
;
|
|
|
|
condition:
|
|
expression
|
|
{
|
|
$$ = (struct ast_node *) $1;
|
|
}
|
|
| fully_specified_type IDENTIFIER '=' initializer
|
|
{
|
|
ast_declaration *decl = new ast_declaration($2, false, NULL, $4);
|
|
ast_declarator_list *declarator = new ast_declarator_list($1);
|
|
decl->set_location(yylloc);
|
|
declarator->set_location(yylloc);
|
|
|
|
insert_at_tail(& declarator->declarations,
|
|
(struct simple_node *) decl);
|
|
|
|
$$ = declarator;
|
|
}
|
|
;
|
|
|
|
switch_statement:
|
|
SWITCH '(' expression ')' compound_statement
|
|
;
|
|
|
|
case_label:
|
|
CASE expression ':'
|
|
| DEFAULT ':'
|
|
;
|
|
|
|
iteration_statement:
|
|
WHILE '(' condition ')' statement_no_new_scope
|
|
{
|
|
$$ = new ast_iteration_statement(ast_iteration_statement::ast_while,
|
|
NULL, $3, NULL, $5);
|
|
$$->set_location(yylloc);
|
|
}
|
|
| DO statement WHILE '(' expression ')' ';'
|
|
{
|
|
$$ = new ast_iteration_statement(ast_iteration_statement::ast_do_while,
|
|
NULL, $5, NULL, $2);
|
|
$$->set_location(yylloc);
|
|
}
|
|
| FOR '(' for_init_statement for_rest_statement ')' statement_no_new_scope
|
|
{
|
|
$$ = new ast_iteration_statement(ast_iteration_statement::ast_for,
|
|
$3, $4.cond, $4.rest, $6);
|
|
$$->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;
|
|
$$.rest = $3;
|
|
}
|
|
;
|
|
|
|
// Grammar Note: No 'goto'. Gotos are not supported.
|
|
jump_statement:
|
|
CONTINUE ';'
|
|
{
|
|
$$ = new ast_jump_statement(ast_jump_statement::ast_continue, NULL);
|
|
$$->set_location(yylloc);
|
|
}
|
|
| BREAK ';'
|
|
{
|
|
$$ = new ast_jump_statement(ast_jump_statement::ast_break, NULL);
|
|
$$->set_location(yylloc);
|
|
}
|
|
| RETURN ';'
|
|
{
|
|
$$ = new ast_jump_statement(ast_jump_statement::ast_return, NULL);
|
|
$$->set_location(yylloc);
|
|
}
|
|
| RETURN expression ';'
|
|
{
|
|
$$ = new ast_jump_statement(ast_jump_statement::ast_return, $2);
|
|
$$->set_location(yylloc);
|
|
}
|
|
| DISCARD ';' // Fragment shader only.
|
|
{
|
|
$$ = new ast_jump_statement(ast_jump_statement::ast_discard, NULL);
|
|
$$->set_location(yylloc);
|
|
}
|
|
;
|
|
|
|
external_declaration:
|
|
function_definition { $$ = $1; }
|
|
| declaration { $$ = $1; }
|
|
;
|
|
|
|
function_definition:
|
|
function_prototype compound_statement_no_new_scope
|
|
{
|
|
$$ = new ast_function_definition();
|
|
$$->set_location(yylloc);
|
|
$$->prototype = $1;
|
|
$$->body = $2;
|
|
}
|
|
;
|