/*
* Mesa 3-D graphics library
- * Version: 6.5
*
* Copyright (C) 2004-2006 Brian Paul All Rights Reserved.
+ * Copyright (C) 2008 VMware, Inc. All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* usage:
* syn2c slang_shader.syn > slang_shader_syn.h
*
- * when modifying or extending this file, several things must be taken into consideration:
- * - when adding new operators that were marked as reserved in the initial specification,
- * one must only uncomment particular lines of code that refer to operators being added;
- * - when adding new shader target, one must reserve new value for shader_type register and
- * use it in .if constructs for symbols that are exclusive for that shader;
- * - some symbols mimic output of other symbols - the best example is the "for" construct:
- * expression "for (foo(); ; bar())" is seen as "for (foo(); true; bar())" by the output
- * processor - hence, special care must be taken when rearranging output of essential symbols;
- * - order of single-quoted tokens does matter in alternatives - so do not parse "<" operator
- * before "<<" and "<<" before "<<=";
- * - all double-quoted tokens are internally preprocessed to eliminate problems with parsing
- * strings that are prefixes of other strings, like "sampler1D" and "sampler1DShadow";
+ * when modifying or extending this file, several things must be taken into
+ * consideration:
+ *
+ * - when adding new operators that were marked as reserved in the
+ * initial specification, one must only uncomment particular lines of
+ * code that refer to operators being added;
+ *
+ * - when adding new shader targets, one must reserve a new value for
+ * shader_type register and use it in .if constructs for symbols that
+ * are exclusive for that shader;
+ *
+ * - some symbols mimic output of other symbols - the best example is
+ * the "for" construct: expression "for (foo(); ; bar())" is seen as
+ * "for (foo(); true; bar())" by the output processor - hence, special
+ * care must be taken when rearranging output of essential symbols;
+ *
+ * - order of single-quoted tokens does matter in alternatives - so do not
+ * parse "<" operator before "<<" and "<<" before "<<=";
+ *
+ * - all double-quoted tokens are internally preprocessed to eliminate
+ * problems with parsing strings that are prefixes of other strings,
+ * like "sampler1D" and "sampler1DShadow";
*/
.syntax translation_unit;
/* revision number - increment after each change affecting emitted output */
-.emtcode REVISION 3
+.emtcode REVISION 5
/* external declaration (or precision or invariant stmt) */
.emtcode EXTERNAL_NULL 0
.emtcode INVARIANT_STMT 4
/* precision */
-.emtcode PRECISION_LOW 0
-.emtcode PRECISION_MEDIUM 1
-.emtcode PRECISION_HIGH 2
+.emtcode PRECISION_DEFAULT 0
+.emtcode PRECISION_LOW 1
+.emtcode PRECISION_MEDIUM 2
+.emtcode PRECISION_HIGH 3
/* declaration */
.emtcode DECLARATION_FUNCTION_PROTOTYPE 1
.emtcode FUNCTION_CONSTRUCTOR 1
.emtcode FUNCTION_OPERATOR 2
+/* function call type */
+.emtcode FUNCTION_CALL_NONARRAY 0
+.emtcode FUNCTION_CALL_ARRAY 1
+
/* operator type */
.emtcode OPERATOR_ADDASSIGN 1
.emtcode OPERATOR_SUBASSIGN 2
.emtcode TYPE_QUALIFIER_FIXEDOUTPUT 5
.emtcode TYPE_QUALIFIER_FIXEDINPUT 6
+/* invariant qualifier */
+.emtcode TYPE_VARIANT 90
+.emtcode TYPE_INVARIANT 91
+
+/* centroid qualifier */
+.emtcode TYPE_CENTER 95
+.emtcode TYPE_CENTROID 96
+
/* type specifier */
.emtcode TYPE_SPECIFIER_VOID 0
.emtcode TYPE_SPECIFIER_BOOL 1
.emtcode TYPE_SPECIFIER_MAT34 30
.emtcode TYPE_SPECIFIER_MAT43 31
+/* type specifier array */
+.emtcode TYPE_SPECIFIER_NONARRAY 0
+.emtcode TYPE_SPECIFIER_ARRAY 1
/* structure field */
.emtcode FIELD_NONE 0
.emtcode OP_FIELD 59
.emtcode OP_POSTINCREMENT 60
.emtcode OP_POSTDECREMENT 61
+.emtcode OP_PRECISION 62
+.emtcode OP_METHOD 63
/* parameter qualifier */
.emtcode PARAM_QUALIFIER_IN 0
.emtcode PARAMETER_ARRAY_NOT_PRESENT 0
.emtcode PARAMETER_ARRAY_PRESENT 1
-.errtext INVALID_EXTERNAL_DECLARATION "2001: Invalid external declaration."
+/* INVALID_EXTERNAL_DECLARATION seems to be reported when there's */
+/* any syntax errors... */
+.errtext INVALID_EXTERNAL_DECLARATION "2001: Syntax error."
.errtext INVALID_OPERATOR_OVERRIDE "2002: Invalid operator override."
.errtext LBRACE_EXPECTED "2003: '{' expected but '$err_token$' found."
.errtext LPAREN_EXPECTED "2004: '(' expected but '$err_token$' found."
.errtext INVALID_PRECISION_TYPE "2007: Invalid precision type '$err_token$'."
-/* tells whether the shader that is being parsed is a built-in shader or not */
-/* 0 - normal behaviour */
-/* 1 - accepts constructor and operator definitions and __asm statements */
-/* the implementation will set it to 1 when compiling internal built-in shaders */
+/*
+ * tells whether the shader that is being parsed is a built-in shader or not
+ * 0 - normal behaviour
+ * 1 - accepts constructor and operator definitions and __asm statements
+ * the implementation will set it to 1 when compiling internal built-in shaders
+ */
.regbyte parsing_builtin 0
-/* holds the type of the shader being parsed; possible values are listed below */
-/* FRAGMENT_SHADER 1 */
-/* VERTEX_SHADER 2 */
-/* shader type is set by the caller before parsing */
+/*
+ * holds the type of the shader being parsed; possible values are
+ * listed below.
+ * FRAGMENT_SHADER 1
+ * VERTEX_SHADER 2
+ * shader type is set by the caller before parsing
+ */
.regbyte shader_type 0
/*
- <variable_identifier> ::= <identifier>
-*/
+ * <variable_identifier> ::= <identifier>
+ */
variable_identifier
identifier .emit OP_PUSH_IDENTIFIER;
/*
- <primary_expression> ::= <variable_identifier>
- | <intconstant>
- | <floatconstant>
- | <boolconstant>
- | "(" <expression> ")"
-*/
+ * <primary_expression> ::= <variable_identifier>
+ * | <intconstant>
+ * | <floatconstant>
+ * | <boolconstant>
+ * | "(" <expression> ")"
+ */
primary_expression
floatconstant .or boolconstant .or intconstant .or variable_identifier .or primary_expression_1;
primary_expression_1
lparen .and expression .and rparen;
/*
-
<postfix_expression> ::= <primary_expression>
-
| <postfix_expression> "[" <integer_expression> "]"
- | <function_call>
-
| <postfix_expression> "." <field_selection>
-
| <postfix_expression> "++"
-
| <postfix_expression> "--"
-*/
+
* <postfix_expression> ::= <primary_expression>
+
* | <postfix_expression> "[" <integer_expression> "]"
+ * | <function_call>
+
* | <postfix_expression> "." <field_selection>
+
* | <postfix_expression> "++"
+
* | <postfix_expression> "--"
+ */
postfix_expression
postfix_expression_1 .and .loop postfix_expression_2;
postfix_expression_1
dot .and field_selection .emit OP_FIELD;
/*
- <integer_expression> ::= <expression>
-*/
+ * <integer_expression> ::= <expression>
+ */
integer_expression
expression;
/*
- <function_call> ::= <function_call_generic>
-*/
+ * <function_call> ::= <function_call_generic>
+ */
function_call
+ function_call_or_method;
+
+/*
+ * <function_call_or_method> ::= <regular_function_call>
+ * | <postfix_expression> "." <function_call_generic>
+ */
+function_call_or_method
+ regular_function_call .or method_call;
+
+/*
+ * <method_call> ::= <identifier> "." <function_call_generic>
+ */
+method_call
+ identifier .emit OP_METHOD .and dot .and function_call_generic .and .true .emit OP_END;
+
+/*
+ * <regular_function_call> ::= <function_call_generic>
+ */
+regular_function_call
function_call_generic .emit OP_CALL .and .true .emit OP_END;
/*
- <function_call_generic> ::= <function_call_header_with_parameters> ")"
- | <function_call_header_no_parameters> ")"
-*/
+ * <function_call_generic> ::= <function_call_header_with_parameters> ")"
+ * | <function_call_header_no_parameters> ")"
+ */
function_call_generic
function_call_generic_1 .or function_call_generic_2;
function_call_generic_1
function_call_header_no_parameters .and rparen .error RPAREN_EXPECTED;
/*
- <function_call_header_no_parameters>::= <function_call_header> "void"
- | <function_call_header>
-*/
+ * <function_call_header_no_parameters>::= <function_call_header> "void"
+ * | <function_call_header>
+ */
function_call_header_no_parameters
function_call_header .and function_call_header_no_parameters_1;
function_call_header_no_parameters_1
"void" .or .true;
/*
- <function_call_header_with_parameters>::= <function_call_header> <assignment_expression>
- | <function_call_header_with_parameters> ","
- <assignment_expression>
-*/
+ * <function_call_header_with_parameters> ::= <function_call_header> <assignment_expression>
+ * | <function_call_header_with_parameters> "," <assignment_expression>
+ */
function_call_header_with_parameters
function_call_header .and assignment_expression .and .true .emit OP_END .and
.loop function_call_header_with_parameters_1;
comma .and assignment_expression .and .true .emit OP_END;
/*
- <function_call_header> ::= <function_identifier> "("
-*/
+ * <function_call_header> ::= <function_identifier> "("
+ */
function_call_header
function_identifier .and lparen;
/*
- <function_identifier> ::= <constructor_identifier>
- | <identifier>
-
-note: <constructor_identifier> has been deleted
-*/
+ * <function_identifier> ::= <constructor_identifier>
+ * | <identifier>
+ * | <type_specifier>
+ *
+ * note: <constructor_identifier> and <type_specifier> have been deleted
+ */
function_identifier
- identifier;
+ identifier .and function_identifier_opt_array;
+function_identifier_opt_array
+ function_identifier_array .emit FUNCTION_CALL_ARRAY .or
+ .true .emit FUNCTION_CALL_NONARRAY;
+function_identifier_array
+ lbracket .and constant_expression .and rbracket;
/*
-
<unary_expression> ::= <postfix_expression>
- | "++" <unary_expression>
- | "--" <unary_expression>
- | <unary_operator> <unary_expression>
-
- <unary_operator> ::= "+"
- | "-"
- | "!"
- | "~" // reserved
-*/
+
* <unary_expression> ::= <postfix_expression>
+ * | "++" <unary_expression>
+ * | "--" <unary_expression>
+ * | <unary_operator> <unary_expression>
+ *
+ * <unary_operator> ::= "+"
+ * | "-"
+ * | "!"
+ * | "~" // reserved
+ */
unary_expression
postfix_expression .or unary_expression_1 .or unary_expression_2 .or unary_expression_3 .or
unary_expression_4 .or unary_expression_5/* .or unary_expression_6*/;
tilde .and unary_expression .and .true .emit OP_COMPLEMENT;*/
/*
- <multiplicative_expression> ::= <unary_expression>
- | <multiplicative_expression> "*" <unary_expression>
- | <multiplicative_expression> "/" <unary_expression>
- | <multiplicative_expression> "%" <unary_expression> // reserved
-*/
+ * <multiplicative_expression> ::= <unary_expression>
+ * | <multiplicative_expression> "*" <unary_expression>
+ * | <multiplicative_expression> "/" <unary_expression>
+ * | <multiplicative_expression> "%" <unary_expression> // reserved
+ */
multiplicative_expression
unary_expression .and .loop multiplicative_expression_1;
multiplicative_expression_1
percent .and unary_expression .and .true .emit OP_MODULUS;*/
/*
- <additive_expression> ::= <multiplicative_expression>
-
| <additive_expression> "+" <multiplicative_expression>
-
| <additive_expression> "-" <multiplicative_expression>
-*/
+ * <additive_expression> ::= <multiplicative_expression>
+
* | <additive_expression> "+" <multiplicative_expression>
+
* | <additive_expression> "-" <multiplicative_expression>
+ */
additive_expression
multiplicative_expression .and .loop additive_expression_1;
additive_expression_1
minus .and multiplicative_expression .and .true .emit OP_SUBTRACT;
/*
-
<shift_expression> ::= <additive_expression>
-
| <shift_expression> "<<" <additive_expression> // reserved
-
| <shift_expression> ">>" <additive_expression> // reserved
-*/
+
* <shift_expression> ::= <additive_expression>
+
* | <shift_expression> "<<" <additive_expression> // reserved
+
* | <shift_expression> ">>" <additive_expression> // reserved
+ */
shift_expression
additive_expression/* .and .loop shift_expression_1*/;
/*shift_expression_1
greatergreater .and additive_expression .and .true .emit OP_RSHIFT;*/
/*
- <relational_expression> ::= <shift_expression>
- | <relational_expression> "<" <shift_expression>
- | <relational_expression> ">" <shift_expression>
- | <relational_expression> "<=" <shift_expression>
- | <relational_expression> ">=" <shift_expression>
-*/
+ * <relational_expression> ::= <shift_expression>
+ * | <relational_expression> "<" <shift_expression>
+ * | <relational_expression> ">" <shift_expression>
+ * | <relational_expression> "<=" <shift_expression>
+ * | <relational_expression> ">=" <shift_expression>
+ */
relational_expression
shift_expression .and .loop relational_expression_1;
relational_expression_1
greater .and shift_expression .and .true .emit OP_GREATER;
/*
- <equality_expression> ::= <relational_expression>
- | <equality_expression> "==" <relational_expression>
- | <equality_expression> "!=" <relational_expression>
-*/
+ * <equality_expression> ::= <relational_expression>
+ * | <equality_expression> "==" <relational_expression>
+ * | <equality_expression> "!=" <relational_expression>
+ */
equality_expression
relational_expression .and .loop equality_expression_1;
equality_expression_1
bangequals .and relational_expression .and .true .emit OP_NOTEQUAL;
/*
- <and_expression> ::= <equality_expression>
-
| <and_expression> "&" <equality_expression> // reserved
-*/
+ * <and_expression> ::= <equality_expression>
+
* | <and_expression> "&" <equality_expression> // reserved
+ */
and_expression
equality_expression/* .and .loop and_expression_1*/;
/*and_expression_1
ampersand .and equality_expression .and .true .emit OP_BITAND;*/
/*
-
<exclusive_or_expression> ::= <and_expression>
-
| <exclusive_or_expression> "^" <and_expression> // reserved
-*/
+
* <exclusive_or_expression> ::= <and_expression>
+
* | <exclusive_or_expression> "^" <and_expression> // reserved
+ */
exclusive_or_expression
and_expression/* .and .loop exclusive_or_expression_1*/;
/*exclusive_or_expression_1
caret .and and_expression .and .true .emit OP_BITXOR;*/
/*
- <inclusive_or_expression> ::= <exclusive_or_expression>
- | <inclusive_or_expression> "|" <exclusive_or_expression> // reserved
-*/
+ * <inclusive_or_expression> ::= <exclusive_or_expression>
+ * | <inclusive_or_expression> "|" <exclusive_or_expression> // reserved
+ */
inclusive_or_expression
exclusive_or_expression/* .and .loop inclusive_or_expression_1*/;
/*inclusive_or_expression_1
bar .and exclusive_or_expression .and .true .emit OP_BITOR;*/
/*
- <logical_and_expression> ::= <inclusive_or_expression>
- | <logical_and_expression> "&&" <inclusive_or_expression>
-*/
+ * <logical_and_expression> ::= <inclusive_or_expression>
+ * | <logical_and_expression> "&&" <inclusive_or_expression>
+ */
logical_and_expression
inclusive_or_expression .and .loop logical_and_expression_1;
logical_and_expression_1
ampersandampersand .and inclusive_or_expression .and .true .emit OP_LOGICALAND;
/*
- <logical_xor_expression> ::= <logical_and_expression>
- | <logical_xor_expression> "^^" <logical_and_expression>
-*/
+ * <logical_xor_expression> ::= <logical_and_expression>
+ * | <logical_xor_expression> "^^" <logical_and_expression>
+ */
logical_xor_expression
logical_and_expression .and .loop logical_xor_expression_1;
logical_xor_expression_1
caretcaret .and logical_and_expression .and .true .emit OP_LOGICALXOR;
/*
- <logical_or_expression> ::= <logical_xor_expression>
- | <logical_or_expression> "||" <logical_xor_expression>
-*/
+ * <logical_or_expression> ::= <logical_xor_expression>
+ * | <logical_or_expression> "||" <logical_xor_expression>
+ */
logical_or_expression
logical_xor_expression .and .loop logical_or_expression_1;
logical_or_expression_1
barbar .and logical_xor_expression .and .true .emit OP_LOGICALOR;
/*
- <conditional_expression> ::= <logical_or_expression>
- | <logical_or_expression> "?" <expression> ":"
- <conditional_expression>
-*/
+ * <conditional_expression> ::= <logical_or_expression>
+ * | <logical_or_expression> "?" <expression> ":" <conditional_expression>
+ */
conditional_expression
logical_or_expression .and .loop conditional_expression_1;
conditional_expression_1
question .and expression .and colon .and conditional_expression .and .true .emit OP_SELECT;
/*
- <assignment_expression> ::= <conditional_expression>
- | <unary_expression> <assignment_operator>
- <assignment_expression>
-
- <assignment_operator> ::= "="
- | "*="
- | "/="
- | "+="
- | "-="
- | "%=" // reserved
- | "<<=" // reserved
- | ">>=" // reserved
- | "&=" // reserved
- | "^=" // reserved
- | "|=" // reserved
-*/
+ * <assignment_expression> ::= <conditional_expression>
+ * | <unary_expression> <assignment_operator> <assignment_expression>
+ *
+ * <assignment_operator> ::= "="
+ * | "*="
+ * | "/="
+ * | "+="
+ * | "-="
+ * | "%=" // reserved
+ * | "<<=" // reserved
+ * | ">>=" // reserved
+ * | "&=" // reserved
+ * | "^=" // reserved
+ * | "|=" // reserved
+ */
assignment_expression
assignment_expression_1 .or assignment_expression_2 .or assignment_expression_3 .or
assignment_expression_4 .or assignment_expression_5/* .or assignment_expression_6 .or
unary_expression .and barequals .and assignment_expression .and .true .emit OP_ORASSIGN;*/
/*
-
<expression> ::= <assignment_expression>
-
| <expression> "," <assignment_expression>
-*/
+
* <expression> ::= <assignment_expression>
+
* | <expression> "," <assignment_expression>
+ */
expression
assignment_expression .and .loop expression_1;
expression_1
comma .and assignment_expression .and .true .emit OP_SEQUENCE;
/*
- <constant_expression> ::= <conditional_expression>
-*/
+ * <constant_expression> ::= <conditional_expression>
+ */
constant_expression
conditional_expression .and .true .emit OP_END;
/*
- <declaration> ::= <function_prototype> ";"
- | <init_declarator_list> ";"
-*/
+ * <declaration> ::= <function_prototype> ";"
+ * | <init_declarator_list> ";"
+ */
declaration
declaration_1 .or declaration_2;
declaration_1
init_declarator_list .emit DECLARATION_INIT_DECLARATOR_LIST .and semicolon;
/*
- <function_prototype> ::= <function_header> "void" ")"
- | <function_declarator> ")"
-*/
+ * <function_prototype> ::= <function_header> "void" ")"
+ * | <function_declarator> ")"
+ */
function_prototype
function_prototype_1 .or function_prototype_2;
function_prototype_1
function_declarator .and rparen .error RPAREN_EXPECTED .emit PARAMETER_NONE;
/*
- <function_declarator> ::= <function_header>
- | <function_header_with_parameters>
-*/
+ * <function_declarator> ::= <function_header>
+ * | <function_header_with_parameters>
+ */
function_declarator
function_header_with_parameters .or function_header;
/*
-
<function_header_with_parameters> ::= <function_header> <parameter_declaration>
- | <function_header_with_parameters> ","
-
<parameter_declaration>
-*/
+
* <function_header_with_parameters> ::= <function_header> <parameter_declaration>
+ * | <function_header_with_parameters> ","
+
* <parameter_declaration>
+ */
function_header_with_parameters
function_header .and parameter_declaration .and .loop function_header_with_parameters_1;
function_header_with_parameters_1
comma .and parameter_declaration;
/*
- <function_header> ::= <fully_specified_type> <identifier> "("
-*/
+ * <function_header> ::= <fully_specified_type> <identifier> "("
+ */
function_header
function_header_nospace .or function_header_space;
function_header_space
fully_specified_type_nospace .and function_decl_identifier .and lparen;
/*
- <function_decl_identifier> ::= "__constructor"
- | <__operator>
- | <identifier>
-
-note: this is an extension to the standard language specification - normally slang disallows
- operator and constructor prototypes and definitions
-*/
+ * <function_decl_identifier> ::= "__constructor"
+ * | <__operator>
+ * | <identifier>
+ *
+ * note: this is an extension to the standard language specification.
+ * normally slang disallows operator and constructor prototypes and definitions
+ */
function_decl_identifier
.if (parsing_builtin != 0) __operator .emit FUNCTION_OPERATOR .or
.if (parsing_builtin != 0) "__constructor" .emit FUNCTION_CONSTRUCTOR .or
identifier .emit FUNCTION_ORDINARY;
/*
- <__operator> ::= "__operator" <overriden_op>
-
-note: this is an extension to the standard language specification - normally slang disallows
- operator prototypes and definitions
-*/
+ * <__operator> ::= "__operator" <overriden_op>
+ *
+ * note: this is an extension to the standard language specification.
+ * normally slang disallows operator prototypes and definitions
+ */
__operator
"__operator" .and overriden_operator .error INVALID_OPERATOR_OVERRIDE;
/*
- <overriden_op> ::= "="
- | "+="
- | "-="
- | "*="
- | "/="
- | "%=" // reserved
- | "<<=" // reserved
- | ">>=" // reserved
- | "&=" // reserved
- | "^=" // reserved
- | "|=" // reserved
- | "^^"
- | "|" // reserved
- | "^" // reserved
- | "&" // reserved
- | "=="
- | "!="
- | "<"
- | ">"
- | "<="
- | ">="
- | "<<" // reserved
- | ">>" // reserved
- | "*"
- | "/"
- | "%" // reserved
- | "++"
- | "--"
- | "+"
- | "-"
- | "~" // reserved
- | "!"
-
-note: this is an extension to the standard language specification - normally slang disallows
- operator prototypes and definitions
-*/
+ * <overriden_op> ::= "="
+ * | "+="
+ * | "-="
+ * | "*="
+ * | "/="
+ * | "%=" // reserved
+ * | "<<=" // reserved
+ * | ">>=" // reserved
+ * | "&=" // reserved
+ * | "^=" // reserved
+ * | "|=" // reserved
+ * | "^^"
+ * | "|" // reserved
+ * | "^" // reserved
+ * | "&" // reserved
+ * | "=="
+ * | "!="
+ * | "<"
+ * | ">"
+ * | "<="
+ * | ">="
+ * | "<<" // reserved
+ * | ">>" // reserved
+ * | "*"
+ * | "/"
+ * | "%" // reserved
+ * | "++"
+ * | "--"
+ * | "+"
+ * | "-"
+ * | "~" // reserved
+ * | "!"
+ *
+ * note: this is an extension to the standard language specification.
+ * normally slang disallows operator prototypes and definitions
+ */
overriden_operator
plusplus .emit OPERATOR_INCREMENT .or
plusequals .emit OPERATOR_ADDASSIGN .or
caret .emit OPERATOR_BITXOR*/;
/*
- <parameter_declarator> ::= <type_specifier> <identifier>
- | <type_specifier> <identifier> "[" <constant_expression>
- "]"
-*/
+ * <parameter_declarator> ::= <type_specifier> <identifier>
+ * | <type_specifier> <identifier> "[" <constant_expression> "]"
+ */
parameter_declarator
parameter_declarator_nospace .or parameter_declarator_space;
parameter_declarator_nospace
lbracket .and constant_expression .and rbracket;
/*
- <parameter_declaration> ::= <type_qualifier> <parameter_qualifier>
- <parameter_declarator>
- | <type_qualifier> <parameter_qualifier>
- <parameter_type_specifier>
- | <parameter_qualifier> <parameter_declarator>
- | <parameter_qualifier> <parameter_type_specifier>
-*/
+ * <parameter_declaration> ::= <type_qualifier> <parameter_qualifier>
+ * <precision> <parameter_declarator>
+ * | <type_qualifier> <parameter_qualifier>
+ * <precision> <parameter_type_specifier>
+ * | <type_qualifier> <parameter_qualifier>
+ * <parameter_declarator>
+ * | <type_qualifier> <parameter_qualifier>
+ * <parameter_type_specifier>
+ * | <parameter_qualifier> <precision>
+ * <parameter_declarator>
+ * | <parameter_qualifier> <precision>
+ * <parameter_type_specifier>
+ * | <parameter_qualifier> <parameter_declarator>
+ * | <parameter_qualifier> <parameter_type_specifier>
+ */
parameter_declaration
parameter_declaration_1 .emit PARAMETER_NEXT;
parameter_declaration_1
parameter_declaration_3
parameter_qualifier .emit TYPE_QUALIFIER_NONE .and parameter_declaration_4;
parameter_declaration_4
+ parameter_declaration_optprec .and parameter_declaration_rest;
+parameter_declaration_optprec
+ parameter_declaration_prec .or .true .emit PRECISION_DEFAULT;
+parameter_declaration_prec
+ precision .and space;
+parameter_declaration_rest
parameter_declarator .or parameter_type_specifier;
/*
- <parameter_qualifier> ::= "in"
- | "out"
- | "inout"
- | ""
-*/
+ * <parameter_qualifier> ::= "in"
+ * | "out"
+ * | "inout"
+ * | ""
+ */
parameter_qualifier
parameter_qualifier_1 .or .true .emit PARAM_QUALIFIER_IN;
parameter_qualifier_1
"inout" .emit PARAM_QUALIFIER_INOUT;
/*
- <parameter_type_specifier> ::= <type_specifier>
- | <type_specifier> "[" <constant_expression> "]"
-*/
+ * <parameter_type_specifier> ::= <type_specifier>
+ * | <type_specifier> "[" <constant_expression> "]"
+ */
parameter_type_specifier
parameter_type_specifier_1 .and .true .emit '\0' .and parameter_type_specifier_2;
parameter_type_specifier_1
lbracket .and constant_expression .and rbracket;
/*
- <init_declarator_list> ::= <single_declaration>
- | <init_declarator_list> "," <identifier>
- | <init_declarator_list> "," <identifier> "[" "]"
- | <init_declarator_list> "," <identifier> "["
- <constant_expression> "]"
- | <init_declarator_list> "," <identifier> "="
- <initializer>
-*/
+ * <init_declarator_list> ::= <single_declaration>
+ * | <init_declarator_list> "," <identifier>
+ * | <init_declarator_list> "," <identifier> "[" "]"
+ * | <init_declarator_list> "," <identifier> "[" <constant_expression> "]"
+ * | <init_declarator_list> "," <identifier> "=" <initializer>
+ */
init_declarator_list
single_declaration .and .loop init_declarator_list_1 .emit DECLARATOR_NEXT .and
.true .emit DECLARATOR_NONE;
constant_expression .emit VARIABLE_ARRAY_EXPLICIT .or .true .emit VARIABLE_ARRAY_UNKNOWN;
/*
- <single_declaration> ::= <fully_specified_type>
- | <fully_specified_type> <identifier>
- | <fully_specified_type> <identifier> "[" "]"
- | <fully_specified_type> <identifier> "["
- <constant_expression> "]"
- | <fully_specified_type> <identifier> "=" <initializer>
-*/
+ * <single_declaration> ::= <fully_specified_type>
+ * | <fully_specified_type> <identifier>
+ * | <fully_specified_type> <identifier> "[" "]"
+ * | <fully_specified_type> <identifier> "[" <constant_expression> "]"
+ * | <fully_specified_type> <identifier> "=" <initializer>
+ */
single_declaration
single_declaration_nospace .or single_declaration_space;
single_declaration_space
constant_expression .emit VARIABLE_ARRAY_EXPLICIT .or .true .emit VARIABLE_ARRAY_UNKNOWN;
/*
- <fully_specified_type> ::= <type_specifier>
- | <type_qualifier> <type_specifier>
-*/
+ * <fully_specified_type> ::= <opt_invariant> <opt_centroid> <opt_qualifer> <opt_precision> <type_specifier>
+ *
+ * Example: "invariant varying highp vec3"
+ */
fully_specified_type_space
- fully_specified_type_1 .and type_specifier_space;
+ fully_specified_type_optinvariant .and fully_specified_type_optcentroid .and fully_specified_type_optqual .and fully_specified_type_optprec .and type_specifier_space;
fully_specified_type_nospace
- fully_specified_type_1 .and type_specifier_nospace;
-fully_specified_type_1
- fully_specified_type_2 .or .true .emit TYPE_QUALIFIER_NONE;
-fully_specified_type_2
+ fully_specified_type_optinvariant .and fully_specified_type_optcentroid .and fully_specified_type_optqual .and fully_specified_type_optprec .and type_specifier_nospace;
+fully_specified_type_optinvariant
+ fully_specified_type_invariant .or .true .emit TYPE_VARIANT;
+fully_specified_type_invariant
+ invariant_qualifier .and space;
+fully_specified_type_optcentroid
+ fully_specified_type_centroid .or .true .emit TYPE_CENTER;
+fully_specified_type_centroid
+ centroid_qualifier .and space;
+fully_specified_type_optqual
+ fully_specified_type_qual .or .true .emit TYPE_QUALIFIER_NONE;
+fully_specified_type_qual
type_qualifier .and space;
+fully_specified_type_optprec
+ fully_specified_type_prec .or .true .emit PRECISION_DEFAULT;
+fully_specified_type_prec
+ precision .and space;
/*
- <type_qualifier> ::= "const"
- | "attribute" // Vertex only.
- | "varying"
- | "uniform"
- | "__fixed_output"
- | "__fixed_input"
+ * <invariant_qualifier> ::= "invariant"
+ */
+invariant_qualifier
+ "invariant" .emit TYPE_INVARIANT;
+
+centroid_qualifier
+ "centroid" .emit TYPE_CENTROID;
-note: this is an extension to the standard language specification - normally slang disallows
- __fixed_output and __fixed_input type qualifiers
-*/
+
+/*
+ * <type_qualifier> ::= "const"
+ * | "attribute" // Vertex only.
+ * | "varying"
+ * | "uniform"
+ * | "__fixed_output"
+ * | "__fixed_input"
+ *
+ * note: this is an extension to the standard language specification,
+ * normally slang disallows __fixed_output and __fixed_input type qualifiers
+ */
type_qualifier
"const" .emit TYPE_QUALIFIER_CONST .or
.if (shader_type == 2) "attribute" .emit TYPE_QUALIFIER_ATTRIBUTE .or
"varying" .emit TYPE_QUALIFIER_VARYING .or
"uniform" .emit TYPE_QUALIFIER_UNIFORM .or
- .if (parsing_builtin != 0) "__fixed_output" .emit TYPE_QUALIFIER_FIXEDOUTPUT .or
- .if (parsing_builtin != 0) "__fixed_input" .emit TYPE_QUALIFIER_FIXEDINPUT;
-
-/*
- <type_specifier> ::= "void"
- | "float"
- | "int"
- | "bool"
- | "vec2"
- | "vec3"
- | "vec4"
- | "bvec2"
- | "bvec3"
- | "bvec4"
- | "ivec2"
- | "ivec3"
- | "ivec4"
- | "mat2"
- | "mat3"
- | "mat4"
- | "mat2x3"
- | "mat3x2"
- | "mat2x4"
- | "mat4x2"
- | "mat3x4"
- | "mat4x3"
- | "sampler1D"
- | "sampler2D"
- | "sampler3D"
- | "samplerCube"
- | "sampler1DShadow"
- | "sampler2DShadow"
- | "sampler2DRect"
- | "sampler2DRectShadow"
- | <struct_specifier>
- | <type_name>
-*/
-type_specifier_space
+ .if (parsing_builtin != 0) "__fixed_output" .emit TYPE_QUALIFIER_FIXEDOUTPUT .or
+ .if (parsing_builtin != 0) "__fixed_input" .emit TYPE_QUALIFIER_FIXEDINPUT;
+
+/*
+ * <type_specifier_nonarray> ::= "void"
+ * | "float"
+ * | "int"
+ * | "bool"
+ * | "vec2"
+ * | "vec3"
+ * | "vec4"
+ * | "bvec2"
+ * | "bvec3"
+ * | "bvec4"
+ * | "ivec2"
+ * | "ivec3"
+ * | "ivec4"
+ * | "mat2"
+ * | "mat3"
+ * | "mat4"
+ * | "mat2x3"
+ * | "mat3x2"
+ * | "mat2x4"
+ * | "mat4x2"
+ * | "mat3x4"
+ * | "mat4x3"
+ * | "sampler1D"
+ * | "sampler2D"
+ * | "sampler3D"
+ * | "samplerCube"
+ * | "sampler1DShadow"
+ * | "sampler2DShadow"
+ * | "sampler2DRect"
+ * | "sampler2DRectShadow"
+ * | <struct_specifier>
+ * | <type_name>
+ */
+type_specifier_nonarray_space
"void" .emit TYPE_SPECIFIER_VOID .or
"float" .emit TYPE_SPECIFIER_FLOAT .or
"int" .emit TYPE_SPECIFIER_INT .or
"sampler2DRect" .emit TYPE_SPECIFIER_SAMPLER2DRECT .or
"sampler2DRectShadow" .emit TYPE_SPECIFIER_SAMPLER2DRECTSHADOW .or
type_name .emit TYPE_SPECIFIER_TYPENAME;
-type_specifier_nospace
+type_specifier_nonarray_nospace
struct_specifier .emit TYPE_SPECIFIER_STRUCT;
+type_specifier_nonarray
+ type_specifier_nonarray_nospace .or type_specifier_nonarray_space;
+
+/*
+ * <type_specifier> ::= <type_specifier_nonarray>
+ * | <type_specifier_nonarray> "[" <constant_expression> "]"
+ */
+type_specifier_space
+ type_specifier_nonarray_space .and .true .emit TYPE_SPECIFIER_NONARRAY;
+type_specifier_nospace
+ type_specifier_nospace_array .or type_specifier_nospace_1;
+type_specifier_nospace_1
+ type_specifier_nonarray_nospace .and .true .emit TYPE_SPECIFIER_NONARRAY;
+type_specifier_nospace_array
+ type_specifier_nonarray .and lbracket .emit TYPE_SPECIFIER_ARRAY .and constant_expression .and rbracket;
/*
- <struct_specifier> ::= "struct" <identifier> "{" <struct_declaration_list> "}"
- | "struct" "{" <struct_declaration_list> "}"
-*/
+ * <struct_specifier> ::= "struct" <identifier> "{" <struct_declaration_list> "}"
+ * | "struct" "{" <struct_declaration_list> "}"
+ */
struct_specifier
"struct" .and struct_specifier_1 .and optional_space .and lbrace .error LBRACE_EXPECTED .and
struct_declaration_list .and rbrace .emit FIELD_NONE;
space .and identifier;
/*
- <struct_declaration_list> ::= <struct_declaration>
- | <struct_declaration_list> <struct_declaration>
-*/
+ * <struct_declaration_list> ::= <struct_declaration>
+ * | <struct_declaration_list> <struct_declaration>
+ */
struct_declaration_list
struct_declaration .and .loop struct_declaration .emit FIELD_NEXT;
/*
- <struct_declaration> ::= <type_specifier> <struct_declarator_list> ";"
-*/
+ * <struct_declaration> ::= <type_specifier> <struct_declarator_list> ";"
+ */
struct_declaration
struct_declaration_nospace .or struct_declaration_space;
struct_declaration_space
type_specifier_nospace .and struct_declarator_list .and semicolon .emit FIELD_NONE;
/*
- <struct_declarator_list> ::= <struct_declarator>
- | <struct_declarator_list> "," <struct_declarator>
-*/
+ * <struct_declarator_list> ::= <struct_declarator>
+ * | <struct_declarator_list> "," <struct_declarator>
+ */
struct_declarator_list
struct_declarator .and .loop struct_declarator_list_1 .emit FIELD_NEXT;
struct_declarator_list_1
comma .and struct_declarator;
/*
- <struct_declarator> ::= <identifier>
- | <identifier> "[" <constant_expression> "]"
-*/
+ * <struct_declarator> ::= <identifier>
+ * | <identifier> "[" <constant_expression> "]"
+ */
struct_declarator
identifier .and struct_declarator_1;
struct_declarator_1
lbracket .and constant_expression .and rbracket;
/*
-
<initializer> ::= <assignment_expression>
-*/
+
* <initializer> ::= <assignment_expression>
+ */
initializer
assignment_expression .and .true .emit OP_END;
/*
- <declaration_statement> ::= <declaration>
-*/
+ * <declaration_statement> ::= <declaration>
+ */
declaration_statement
declaration;
/*
- <statement> ::= <compound_statement>
- | <simple_statement>
-*/
+ * <statement> ::= <compound_statement>
+ * | <simple_statement>
+ */
statement
compound_statement .or simple_statement;
statement_space
space .and simple_statement;
/*
- <simple_statement> ::= <__asm_statement>
- | <selection_statement>
- | <iteration_statement>
- | <jump_statement>
- | <expression_statement>
- | <declaration_statement>
-
-note: this is an extension to the standard language specification - normally slang disallows
- use of __asm statements
-*/
+ * <simple_statement> ::= <__asm_statement>
+ * | <selection_statement>
+ * | <iteration_statement>
+ * | <jump_statement>
+ * | <expression_statement>
+ * | <declaration_statement>
+ *
+ * note: this is an extension to the standard language specification.
+ * normally slang disallows use of __asm statements
+ */
simple_statement
.if (parsing_builtin != 0) __asm_statement .emit OP_ASM .or
selection_statement .or
iteration_statement .or
+ precision_stmt .emit OP_PRECISION .or
jump_statement .or
expression_statement .emit OP_EXPRESSION .or
declaration_statement .emit OP_DECLARE;
/*
- <compound_statement> ::= "{" "}"
- | "{" <statement_list> "}"
-*/
+ * <compound_statement> ::= "{" "}"
+ * | "{" <statement_list> "}"
+ */
compound_statement
compound_statement_1 .emit OP_BLOCK_BEGIN_NEW_SCOPE .and .true .emit OP_END;
compound_statement_1
lbrace .and statement_list .and rbrace;
/*
- <statement_no_new_scope> ::= <compound_statement_no_new_scope>
- | <simple_statement>
-*/
+ * <statement_no_new_scope> ::= <compound_statement_no_new_scope>
+ * | <simple_statement>
+ */
statement_no_new_scope
compound_statement_no_new_scope .or simple_statement;
/*
- <compound_statement_no_new_scope> ::= "{" "}"
- | "{" <statement_list> "}"
-*/
+ * <compound_statement_no_new_scope> ::= "{" "}"
+ * | "{" <statement_list> "}"
+ */
compound_statement_no_new_scope
compound_statement_no_new_scope_1 .emit OP_BLOCK_BEGIN_NO_NEW_SCOPE .and .true .emit OP_END;
compound_statement_no_new_scope_1
lbrace .and statement_list .and rbrace;
/*
- <statement_list> ::= <statement>
- | <statement_list> <statement>
-*/
+ * <statement_list> ::= <statement>
+ * | <statement_list> <statement>
+ */
statement_list
statement .and .loop statement;
/*
- <expression_statement> ::= ";"
- | <expression> ";"
-*/
+ * <expression_statement> ::= ";"
+ * | <expression> ";"
+ */
expression_statement
expression_statement_1 .or expression_statement_2;
expression_statement_1
expression .and semicolon .emit OP_END;
/*
- <selection_statement> ::= "if" "(" <expression> ")" <selection_rest_statement>
-*/
+ * <selection_statement> ::= "if" "(" <expression> ")" <selection_rest_statement>
+ */
selection_statement
"if" .emit OP_IF .and lparen .error LPAREN_EXPECTED .and expression .and
rparen .error RPAREN_EXPECTED .emit OP_END .and selection_rest_statement;
/*
- <selection_rest_statement> ::= <statement> "else" <statement>
- | <statement>
-*/
+ * <selection_rest_statement> ::= <statement> "else" <statement>
+ * | <statement>
+ */
selection_rest_statement
statement .and selection_rest_statement_1;
selection_rest_statement_1
"else" .and optional_space .and statement;
/*
- <condition> ::= <expression>
- | <fully_specified_type> <identifier> "=" <initializer>
-
-note: if <condition_1> is executed, the emit format must match <declaration> emit format
-*/
+ * <condition> ::= <expression>
+ * | <fully_specified_type> <identifier> "=" <initializer>
+ *
+ * note: if <condition_1> is executed, the emit format must
+ * match <declaration> emit format
+ */
condition
condition_1 .emit OP_DECLARE .emit DECLARATION_INIT_DECLARATOR_LIST .or
condition_3 .emit OP_EXPRESSION;
expression .and .true .emit OP_END;
/*
- <iteration_statement> ::= "while" "(" <condition> ")" <statement>
- | "do" <statement> "while" "(" <expression> ")" ";"
- | "for" "(" <for_init_statement> <for_rest_statement> ")"
- <statement_no_new_scope>
-*/
+ * <iteration_statement> ::= "while" "(" <condition> ")" <statement>
+ * | "do" <statement> "while" "(" <expression> ")" ";"
+ * | "for" "(" <for_init_statement> <for_rest_statement> ")"
+ * <statement_no_new_scope>
+ */
iteration_statement
iteration_statement_1 .or iteration_statement_2 .or iteration_statement_3;
iteration_statement_1
for_rest_statement .and rparen .error RPAREN_EXPECTED .and statement_no_new_scope;
/*
- <for_init_statement> ::= <expression_statement>
- | <declaration_statement>
-*/
+ * <for_init_statement> ::= <expression_statement>
+ * | <declaration_statement>
+ */
for_init_statement
expression_statement .emit OP_EXPRESSION .or declaration_statement .emit OP_DECLARE;
/*
- <conditionopt> ::= <condition>
- | ""
-
-note: <conditionopt> is used only by "for" statement - if <condition> is ommitted, parser
- simulates default behaviour, that is simulates "true" expression
-*/
+ * <conditionopt> ::= <condition>
+ * | ""
+ *
+ * note: <conditionopt> is used only by "for" statement.
+ * if <condition> is ommitted, parser simulates default behaviour,
+ * that is simulates "true" expression
+ */
conditionopt
condition .or
.true .emit OP_EXPRESSION .emit OP_PUSH_BOOL .emit 2 .emit '1' .emit '\0' .emit OP_END;
/*
- <for_rest_statement> ::= <conditionopt> ";"
- | <conditionopt> ";" <expression>
-*/
+ * <for_rest_statement> ::= <conditionopt> ";"
+ * | <conditionopt> ";" <expression>
+ */
for_rest_statement
conditionopt .and semicolon .and for_rest_statement_1;
for_rest_statement_1
expression .and .true .emit OP_END;
/*
- <jump_statement> ::= "continue" ";"
- | "break" ";"
- | "return" ";"
- | "return" <expression> ";"
- | "discard" ";" // Fragment shader only.
-*/
+ * <jump_statement> ::= "continue" ";"
+ * | "break" ";"
+ * | "return" ";"
+ * | "return" <expression> ";"
+ * | "discard" ";" // Fragment shader only.
+ */
jump_statement
jump_statement_1 .or jump_statement_2 .or jump_statement_3 .or jump_statement_4 .or
.if (shader_type == 1) jump_statement_5;
"discard" .and semicolon .emit OP_DISCARD;
/*
-
<__asm_statement> ::= "__asm" <identifier> <asm_arguments> ";"
-
-note: this is an extension to the standard language specification - normally slang disallows
- __asm statements
-*/
+
* <__asm_statement> ::= "__asm" <identifier> <asm_arguments> ";"
+ *
+ * note: this is an extension to the standard language specification.
+ * normally slang disallows __asm statements
+ */
__asm_statement
"__asm" .and space .and identifier .and space .and asm_arguments .and semicolon .emit OP_END;
/*
-
<asm_arguments> ::= <asm_argument>
-
| <asm_arguments> "," <asm_argument>
-
-note: this is an extension to the standard language specification - normally slang disallows
- __asm statements
-*/
+
* <asm_arguments> ::= <asm_argument>
+
* | <asm_arguments> "," <asm_argument>
+ *
+ * note: this is an extension to the standard language specification.
+ * normally slang disallows __asm statements
+ */
asm_arguments
asm_argument .and .true .emit OP_END .and .loop asm_arguments_1;
asm_arguments_1
comma .and asm_argument .and .true .emit OP_END;
/*
- <asm_argument> ::= <variable_identifier>
- | <floatconstant>
-
-note: this is an extension to the standard language specification - normally slang disallows
- __asm statements
-*/
+ * <asm_argument> ::= <variable_identifier>
+ * | <floatconstant>
+ *
+ * note: this is an extension to the standard language specification.
+ * normally slang disallows __asm statements
+ */
asm_argument
var_with_field .or
variable_identifier .or
/*
- * <translation_unit> ::= <external_declaration>
- * | <translation_unit> <external_declaration>
+ * <translation_unit> ::= <external_declaration>
+ * | <translation_unit> <external_declaration>
*/
translation_unit
optional_space .emit REVISION .and external_declaration .error INVALID_EXTERNAL_DECLARATION .and
/*
- * <external_declaration> ::= <function_definition>
- * | <declaration>
+ * <external_declaration> ::= <function_definition>
+ * | <declaration>
*/
external_declaration
precision_stmt .emit DEFAULT_PRECISION .or
- invariant_stmt .emit INVARIANT_STMT .or
function_definition .emit EXTERNAL_FUNCTION_DEFINITION .or
+ invariant_stmt .emit INVARIANT_STMT .or
declaration .emit EXTERNAL_DECLARATION;
/*
- * <precision_stmt>
::= "precision" <precision> <prectype>
+ * <precision_stmt> ::= "precision" <precision> <prectype>
*/
precision_stmt
"precision" .and space .and precision .error INVALID_PRECISION .and space .and prectype .error INVALID_PRECISION_TYPE .and semicolon;
/*
- * <precision> ::= "lowp"
- * | "mediump"
- * | "highp"
+ * <precision> ::= "lowp"
+ * | "mediump"
+ * | "highp"
*/
precision
"lowp" .emit PRECISION_LOW .or
/*
- * <invariant_stmt> ::= "invariant" identifier;
+ * <invariant_stmt> ::= "invariant" identifier;
*/
invariant_stmt
"invariant" .and space .and identifier .and semicolon;
-
/*
- <function_definition> :: <function_prototype> <compound_statement_no_new_scope>
-*/
+ * <function_definition> :: <function_prototype> <compound_statement_no_new_scope>
+ */
function_definition
function_prototype .and compound_statement_no_new_scope;
-/* helper rulez, not part of the official language syntax */
+
+
+/*
+ * helper rules, not part of the official language syntax
+ */
digit_oct
'0'-'7';
id_character_first .emit * .and .loop id_character_next .emit * .and .true .emit '\0';
float
- float_1 .or float_2;
+ float_1 .or float_2 .or float_3;
float_1
- float_fractional_constant .and float_optional_exponent_part;
+ float_fractional_constant .and float_optional_exponent_part .and optional_f_suffix;
float_2
- float_digit_sequence .and .true .emit '\0' .and float_exponent_part;
+ float_digit_sequence .and .true .emit '\0' .and float_exponent_part .and optional_f_suffix;
+float_3
+ float_digit_sequence .and .true .emit '\0' .and 'f' .emit '\0';
float_fractional_constant
float_fractional_constant_1 .or float_fractional_constant_2 .or float_fractional_constant_3;
float_sign
'+' .or '-' .emit '-';
+optional_f_suffix
+ 'f' .or .true;
+
+
integer
integer_hex .or integer_oct .or integer_dec;
cpp_style_comment_char
'\x0E'-'\xFF' .or '\x01'-'\x09' .or '\x0B'-'\x0C';
-/* lexical rulez */
+/* lexical rules */
/*ampersand
optional_space .and '&' .and optional_space;*/
/*tilde
optional_space .and '~' .and optional_space;*/
-/* string rulez - these are used internally by the parser when parsing quoted strings */
+/* string rules - these are used internally by the parser when parsing quoted strings */
.string string_lexer;
lex_next_identifier_character
'a'-'z' .or 'A'-'Z' .or '0'-'9' .or '_';
-/* error rulez - these are used by error messages */
+/* error rules - these are used by error messages */
err_token
'~' .or '`' .or '!' .or '@' .or '#' .or '$' .or '%' .or '^' .or '&' .or '*' .or '(' .or ')' .or
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