diff options
author | Michal Krol <mjkrol@gmail.org> | 2006-04-18 10:47:19 +0000 |
---|---|---|
committer | Michal Krol <mjkrol@gmail.org> | 2006-04-18 10:47:19 +0000 |
commit | 2f8496b5655cbd66711745fcfd87e0e528c50229 (patch) | |
tree | 8f094bff1a3bd6070af345d090435f70ad0c9cdc /src/mesa/shader/slang/library/slang_shader.syn | |
parent | d55de658b559437272a88a5e8743304996044fff (diff) | |
download | external_mesa3d-2f8496b5655cbd66711745fcfd87e0e528c50229.zip external_mesa3d-2f8496b5655cbd66711745fcfd87e0e528c50229.tar.gz external_mesa3d-2f8496b5655cbd66711745fcfd87e0e528c50229.tar.bz2 |
Remove carriage-return chars *ONLY*.
Diffstat (limited to 'src/mesa/shader/slang/library/slang_shader.syn')
-rw-r--r-- | src/mesa/shader/slang/library/slang_shader.syn | 3034 |
1 files changed, 1517 insertions, 1517 deletions
diff --git a/src/mesa/shader/slang/library/slang_shader.syn b/src/mesa/shader/slang/library/slang_shader.syn index 0f15353..2f237ef 100644 --- a/src/mesa/shader/slang/library/slang_shader.syn +++ b/src/mesa/shader/slang/library/slang_shader.syn @@ -1,1517 +1,1517 @@ -/*
- * Mesa 3-D graphics library
- * Version: 6.5
- *
- * Copyright (C) 2004-2006 Brian Paul 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"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included
- * in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- */
-
-/*
- * \file slang_shader.syn
- * slang vertex/fragment shader syntax
- * \author Michal Krol
- */
-
-/*
- * 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";
- */
-
-.syntax translation_unit;
-
-/* revision number - increment after each change affecting emitted output */
-.emtcode REVISION 3
-
-/* external declaration */
-.emtcode EXTERNAL_NULL 0
-.emtcode EXTERNAL_FUNCTION_DEFINITION 1
-.emtcode EXTERNAL_DECLARATION 2
-
-/* declaration */
-.emtcode DECLARATION_FUNCTION_PROTOTYPE 1
-.emtcode DECLARATION_INIT_DECLARATOR_LIST 2
-
-/* function type */
-.emtcode FUNCTION_ORDINARY 0
-.emtcode FUNCTION_CONSTRUCTOR 1
-.emtcode FUNCTION_OPERATOR 2
-
-/* operator type */
-.emtcode OPERATOR_ADDASSIGN 1
-.emtcode OPERATOR_SUBASSIGN 2
-.emtcode OPERATOR_MULASSIGN 3
-.emtcode OPERATOR_DIVASSIGN 4
-/*.emtcode OPERATOR_MODASSIGN 5*/
-/*.emtcode OPERATOR_LSHASSIGN 6*/
-/*.emtcode OPERATOR_RSHASSIGN 7*/
-/*.emtcode OPERATOR_ORASSIGN 8*/
-/*.emtcode OPERATOR_XORASSIGN 9*/
-/*.emtcode OPERATOR_ANDASSIGN 10*/
-.emtcode OPERATOR_LOGICALXOR 11
-/*.emtcode OPERATOR_BITOR 12*/
-/*.emtcode OPERATOR_BITXOR 13*/
-/*.emtcode OPERATOR_BITAND 14*/
-.emtcode OPERATOR_LESS 15
-.emtcode OPERATOR_GREATER 16
-.emtcode OPERATOR_LESSEQUAL 17
-.emtcode OPERATOR_GREATEREQUAL 18
-/*.emtcode OPERATOR_LSHIFT 19*/
-/*.emtcode OPERATOR_RSHIFT 20*/
-.emtcode OPERATOR_MULTIPLY 21
-.emtcode OPERATOR_DIVIDE 22
-/*.emtcode OPERATOR_MODULUS 23*/
-.emtcode OPERATOR_INCREMENT 24
-.emtcode OPERATOR_DECREMENT 25
-.emtcode OPERATOR_PLUS 26
-.emtcode OPERATOR_MINUS 27
-/*.emtcode OPERATOR_COMPLEMENT 28*/
-.emtcode OPERATOR_NOT 29
-
-/* init declarator list */
-.emtcode DECLARATOR_NONE 0
-.emtcode DECLARATOR_NEXT 1
-
-/* variable declaration */
-.emtcode VARIABLE_NONE 0
-.emtcode VARIABLE_IDENTIFIER 1
-.emtcode VARIABLE_INITIALIZER 2
-.emtcode VARIABLE_ARRAY_EXPLICIT 3
-.emtcode VARIABLE_ARRAY_UNKNOWN 4
-
-/* type qualifier */
-.emtcode TYPE_QUALIFIER_NONE 0
-.emtcode TYPE_QUALIFIER_CONST 1
-.emtcode TYPE_QUALIFIER_ATTRIBUTE 2
-.emtcode TYPE_QUALIFIER_VARYING 3
-.emtcode TYPE_QUALIFIER_UNIFORM 4
-.emtcode TYPE_QUALIFIER_FIXEDOUTPUT 5
-.emtcode TYPE_QUALIFIER_FIXEDINPUT 6
-
-/* type specifier */
-.emtcode TYPE_SPECIFIER_VOID 0
-.emtcode TYPE_SPECIFIER_BOOL 1
-.emtcode TYPE_SPECIFIER_BVEC2 2
-.emtcode TYPE_SPECIFIER_BVEC3 3
-.emtcode TYPE_SPECIFIER_BVEC4 4
-.emtcode TYPE_SPECIFIER_INT 5
-.emtcode TYPE_SPECIFIER_IVEC2 6
-.emtcode TYPE_SPECIFIER_IVEC3 7
-.emtcode TYPE_SPECIFIER_IVEC4 8
-.emtcode TYPE_SPECIFIER_FLOAT 9
-.emtcode TYPE_SPECIFIER_VEC2 10
-.emtcode TYPE_SPECIFIER_VEC3 11
-.emtcode TYPE_SPECIFIER_VEC4 12
-.emtcode TYPE_SPECIFIER_MAT2 13
-.emtcode TYPE_SPECIFIER_MAT3 14
-.emtcode TYPE_SPECIFIER_MAT4 15
-.emtcode TYPE_SPECIFIER_SAMPLER1D 16
-.emtcode TYPE_SPECIFIER_SAMPLER2D 17
-.emtcode TYPE_SPECIFIER_SAMPLER3D 18
-.emtcode TYPE_SPECIFIER_SAMPLERCUBE 19
-.emtcode TYPE_SPECIFIER_SAMPLER1DSHADOW 20
-.emtcode TYPE_SPECIFIER_SAMPLER2DSHADOW 21
-.emtcode TYPE_SPECIFIER_STRUCT 22
-.emtcode TYPE_SPECIFIER_TYPENAME 23
-
-/* structure field */
-.emtcode FIELD_NONE 0
-.emtcode FIELD_NEXT 1
-.emtcode FIELD_ARRAY 2
-
-/* operation */
-.emtcode OP_END 0
-.emtcode OP_BLOCK_BEGIN_NO_NEW_SCOPE 1
-.emtcode OP_BLOCK_BEGIN_NEW_SCOPE 2
-.emtcode OP_DECLARE 3
-.emtcode OP_ASM 4
-.emtcode OP_BREAK 5
-.emtcode OP_CONTINUE 6
-.emtcode OP_DISCARD 7
-.emtcode OP_RETURN 8
-.emtcode OP_EXPRESSION 9
-.emtcode OP_IF 10
-.emtcode OP_WHILE 11
-.emtcode OP_DO 12
-.emtcode OP_FOR 13
-.emtcode OP_PUSH_VOID 14
-.emtcode OP_PUSH_BOOL 15
-.emtcode OP_PUSH_INT 16
-.emtcode OP_PUSH_FLOAT 17
-.emtcode OP_PUSH_IDENTIFIER 18
-.emtcode OP_SEQUENCE 19
-.emtcode OP_ASSIGN 20
-.emtcode OP_ADDASSIGN 21
-.emtcode OP_SUBASSIGN 22
-.emtcode OP_MULASSIGN 23
-.emtcode OP_DIVASSIGN 24
-/*.emtcode OP_MODASSIGN 25*/
-/*.emtcode OP_LSHASSIGN 26*/
-/*.emtcode OP_RSHASSIGN 27*/
-/*.emtcode OP_ORASSIGN 28*/
-/*.emtcode OP_XORASSIGN 29*/
-/*.emtcode OP_ANDASSIGN 30*/
-.emtcode OP_SELECT 31
-.emtcode OP_LOGICALOR 32
-.emtcode OP_LOGICALXOR 33
-.emtcode OP_LOGICALAND 34
-/*.emtcode OP_BITOR 35*/
-/*.emtcode OP_BITXOR 36*/
-/*.emtcode OP_BITAND 37*/
-.emtcode OP_EQUAL 38
-.emtcode OP_NOTEQUAL 39
-.emtcode OP_LESS 40
-.emtcode OP_GREATER 41
-.emtcode OP_LESSEQUAL 42
-.emtcode OP_GREATEREQUAL 43
-/*.emtcode OP_LSHIFT 44*/
-/*.emtcode OP_RSHIFT 45*/
-.emtcode OP_ADD 46
-.emtcode OP_SUBTRACT 47
-.emtcode OP_MULTIPLY 48
-.emtcode OP_DIVIDE 49
-/*.emtcode OP_MODULUS 50*/
-.emtcode OP_PREINCREMENT 51
-.emtcode OP_PREDECREMENT 52
-.emtcode OP_PLUS 53
-.emtcode OP_MINUS 54
-/*.emtcode OP_COMPLEMENT 55*/
-.emtcode OP_NOT 56
-.emtcode OP_SUBSCRIPT 57
-.emtcode OP_CALL 58
-.emtcode OP_FIELD 59
-.emtcode OP_POSTINCREMENT 60
-.emtcode OP_POSTDECREMENT 61
-
-/* parameter qualifier */
-.emtcode PARAM_QUALIFIER_IN 0
-.emtcode PARAM_QUALIFIER_OUT 1
-.emtcode PARAM_QUALIFIER_INOUT 2
-
-/* function parameter */
-.emtcode PARAMETER_NONE 0
-.emtcode PARAMETER_NEXT 1
-
-/* function parameter array presence */
-.emtcode PARAMETER_ARRAY_NOT_PRESENT 0
-.emtcode PARAMETER_ARRAY_PRESENT 1
-
-.errtext INVALID_EXTERNAL_DECLARATION "error 2001: invalid external declaration"
-.errtext INVALID_OPERATOR_OVERRIDE "error 2002: invalid operator override"
-.errtext LBRACE_EXPECTED "error 2003: '{' expected but '$err_token$' found"
-.errtext LPAREN_EXPECTED "error 2004: '(' expected but '$err_token$' found"
-.errtext RPAREN_EXPECTED "error 2005: ')' expected but '$err_token$' found"
-
-/* 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 */
-.regbyte shader_type 0
-
-/*
- <variable_identifier> ::= <identifier>
-*/
-variable_identifier
- identifier .emit OP_PUSH_IDENTIFIER;
-
-/*
- <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
- postfix_expression_1 .and .loop postfix_expression_2;
-postfix_expression_1
- function_call .or primary_expression;
-postfix_expression_2
- postfix_expression_3 .or postfix_expression_4 .or
- plusplus .emit OP_POSTINCREMENT .or
- minusminus .emit OP_POSTDECREMENT;
-postfix_expression_3
- lbracket .and integer_expression .and rbracket .emit OP_SUBSCRIPT;
-postfix_expression_4
- dot .and field_selection .emit OP_FIELD;
-
-/*
- <integer_expression> ::= <expression>
-*/
-integer_expression
- expression;
-
-/*
- <function_call> ::= <function_call_generic>
-*/
-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_generic_1 .or function_call_generic_2;
-function_call_generic_1
- function_call_header_with_parameters .and rparen .error RPAREN_EXPECTED;
-function_call_generic_2
- 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 .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 .and assignment_expression .and .true .emit OP_END .and
- .loop function_call_header_with_parameters_1;
-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 .and lparen;
-
-/*
- <function_identifier> ::= <constructor_identifier>
- | <identifier>
-
-note: <constructor_identifier> has been deleted
-*/
-function_identifier
- identifier;
-
-/*
- <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*/;
-unary_expression_1
- plusplus .and unary_expression .and .true .emit OP_PREINCREMENT;
-unary_expression_2
- minusminus .and unary_expression .and .true .emit OP_PREDECREMENT;
-unary_expression_3
- plus .and unary_expression .and .true .emit OP_PLUS;
-unary_expression_4
- minus .and unary_expression .and .true .emit OP_MINUS;
-unary_expression_5
- bang .and unary_expression .and .true .emit OP_NOT;
-/*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 .and .loop multiplicative_expression_1;
-multiplicative_expression_1
- multiplicative_expression_2 .or multiplicative_expression_3/* .or multiplicative_expression_4*/;
-multiplicative_expression_2
- star .and unary_expression .and .true .emit OP_MULTIPLY;
-multiplicative_expression_3
- slash .and unary_expression .and .true .emit OP_DIVIDE;
-/*multiplicative_expression_4
- 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 .and .loop additive_expression_1;
-additive_expression_1
- additive_expression_2 .or additive_expression_3;
-additive_expression_2
- plus .and multiplicative_expression .and .true .emit OP_ADD;
-additive_expression_3
- 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/* .and .loop shift_expression_1*/;
-/*shift_expression_1
- shift_expression_2 .or shift_expression_3;*/
-/*shift_expression_2
- lessless .and additive_expression .and .true .emit OP_LSHIFT;*/
-/*shift_expression_3
- 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 .and .loop relational_expression_1;
-relational_expression_1
- relational_expression_2 .or relational_expression_3 .or relational_expression_4 .or
- relational_expression_5;
-relational_expression_2
- lessequals .and shift_expression .and .true .emit OP_LESSEQUAL;
-relational_expression_3
- greaterequals .and shift_expression .and .true .emit OP_GREATEREQUAL;
-relational_expression_4
- less .and shift_expression .and .true .emit OP_LESS;
-relational_expression_5
- 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 .and .loop equality_expression_1;
-equality_expression_1
- equality_expression_2 .or equality_expression_3;
-equality_expression_2
- equalsequals .and relational_expression .and .true .emit OP_EQUAL;
-equality_expression_3
- bangequals .and relational_expression .and .true .emit OP_NOTEQUAL;
-
-/*
- <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/* .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/* .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 .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 .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 .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 .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
- assignment_expression_1 .or assignment_expression_2 .or assignment_expression_3 .or
- assignment_expression_4 .or assignment_expression_5/* .or assignment_expression_6 .or
- assignment_expression_7 .or assignment_expression_8 .or assignment_expression_9 .or
- assignment_expression_10 .or assignment_expression_11*/ .or conditional_expression;
-assignment_expression_1
- unary_expression .and equals .and assignment_expression .and .true .emit OP_ASSIGN;
-assignment_expression_2
- unary_expression .and starequals .and assignment_expression .and .true .emit OP_MULASSIGN;
-assignment_expression_3
- unary_expression .and slashequals .and assignment_expression .and .true .emit OP_DIVASSIGN;
-assignment_expression_4
- unary_expression .and plusequals .and assignment_expression .and .true .emit OP_ADDASSIGN;
-assignment_expression_5
- unary_expression .and minusequals .and assignment_expression .and .true .emit OP_SUBASSIGN;
-/*assignment_expression_6
- unary_expression .and percentequals .and assignment_expression .and .true .emit OP_MODASSIGN;*/
-/*assignment_expression_7
- unary_expression .and lesslessequals .and assignment_expression .and .true .emit OP_LSHASSIGN;*/
-/*assignment_expression_8
- unary_expression .and greatergreaterequals .and assignment_expression .and
- .true .emit OP_RSHASSIGN;*/
-/*assignment_expression_9
- unary_expression .and ampersandequals .and assignment_expression .and .true .emit OP_ANDASSIGN;*/
-/*assignment_expression_10
- unary_expression .and caretequals .and assignment_expression .and .true .emit OP_XORASSIGN;*/
-/*assignment_expression_11
- unary_expression .and barequals .and assignment_expression .and .true .emit OP_ORASSIGN;*/
-
-/*
- <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 .and .true .emit OP_END;
-
-/*
- <declaration> ::= <function_prototype> ";"
- | <init_declarator_list> ";"
-*/
-declaration
- declaration_1 .or declaration_2;
-declaration_1
- function_prototype .emit DECLARATION_FUNCTION_PROTOTYPE .and semicolon;
-declaration_2
- init_declarator_list .emit DECLARATION_INIT_DECLARATOR_LIST .and semicolon;
-
-/*
- <function_prototype> ::= <function_header> "void" ")"
- | <function_declarator> ")"
-*/
-function_prototype
- function_prototype_1 .or function_prototype_2;
-function_prototype_1
- function_header .and "void" .and rparen .error RPAREN_EXPECTED .emit PARAMETER_NONE;
-function_prototype_2
- function_declarator .and rparen .error RPAREN_EXPECTED .emit PARAMETER_NONE;
-
-/*
- <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 .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
- function_header_nospace .or function_header_space;
-function_header_space
- fully_specified_type_space .and space .and function_decl_identifier .and lparen;
-function_header_nospace
- 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
- .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" .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_operator
- plusplus .emit OPERATOR_INCREMENT .or
- plusequals .emit OPERATOR_ADDASSIGN .or
- plus .emit OPERATOR_PLUS .or
- minusminus .emit OPERATOR_DECREMENT .or
- minusequals .emit OPERATOR_SUBASSIGN .or
- minus .emit OPERATOR_MINUS .or
- bang .emit OPERATOR_NOT .or
- starequals .emit OPERATOR_MULASSIGN .or
- star .emit OPERATOR_MULTIPLY .or
- slashequals .emit OPERATOR_DIVASSIGN .or
- slash .emit OPERATOR_DIVIDE .or
- lessequals .emit OPERATOR_LESSEQUAL .or
- /*lesslessequals .emit OPERATOR_LSHASSIGN .or*/
- /*lessless .emit OPERATOR_LSHIFT .or*/
- less .emit OPERATOR_LESS .or
- greaterequals .emit OPERATOR_GREATEREQUAL .or
- /*greatergreaterequals .emit OPERATOR_RSHASSIGN .or*/
- /*greatergreater .emit OPERATOR_RSHIFT .or*/
- greater .emit OPERATOR_GREATER .or
- /*percentequals .emit OPERATOR_MODASSIGN .or*/
- /*percent .emit OPERATOR_MODULUS .or*/
- /*ampersandequals .emit OPERATOR_ANDASSIGN */
- /*ampersand .emit OPERATOR_BITAND .or*/
- /*barequals .emit OPERATOR_ORASSIGN .or*/
- /*bar .emit OPERATOR_BITOR .or*/
- /*tilde .emit OPERATOR_COMPLEMENT .or*/
- /*caretequals .emit OPERATOR_XORASSIGN .or*/
- caretcaret .emit OPERATOR_LOGICALXOR /*.or
- caret .emit OPERATOR_BITXOR*/;
-
-/*
- <parameter_declarator> ::= <type_specifier> <identifier>
- | <type_specifier> <identifier> "[" <constant_expression>
- "]"
-*/
-parameter_declarator
- parameter_declarator_nospace .or parameter_declarator_space;
-parameter_declarator_nospace
- type_specifier_nospace .and identifier .and parameter_declarator_1;
-parameter_declarator_space
- type_specifier_space .and space .and identifier .and parameter_declarator_1;
-parameter_declarator_1
- parameter_declarator_2 .emit PARAMETER_ARRAY_PRESENT .or
- .true .emit PARAMETER_ARRAY_NOT_PRESENT;
-parameter_declarator_2
- 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
- parameter_declaration_1 .emit PARAMETER_NEXT;
-parameter_declaration_1
- parameter_declaration_2 .or parameter_declaration_3;
-parameter_declaration_2
- type_qualifier .and space .and parameter_qualifier .and parameter_declaration_4;
-parameter_declaration_3
- parameter_qualifier .emit TYPE_QUALIFIER_NONE .and parameter_declaration_4;
-parameter_declaration_4
- parameter_declarator .or parameter_type_specifier;
-
-/*
- <parameter_qualifier> ::= "in"
- | "out"
- | "inout"
- | ""
-*/
-parameter_qualifier
- parameter_qualifier_1 .or .true .emit PARAM_QUALIFIER_IN;
-parameter_qualifier_1
- parameter_qualifier_2 .and space;
-parameter_qualifier_2
- "in" .emit PARAM_QUALIFIER_IN .or
- "out" .emit PARAM_QUALIFIER_OUT .or
- "inout" .emit PARAM_QUALIFIER_INOUT;
-
-/*
- <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
- type_specifier_nospace .or type_specifier_space;
-parameter_type_specifier_2
- parameter_type_specifier_3 .emit PARAMETER_ARRAY_PRESENT .or
- .true .emit PARAMETER_ARRAY_NOT_PRESENT;
-parameter_type_specifier_3
- 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 .and .loop init_declarator_list_1 .emit DECLARATOR_NEXT .and
- .true .emit DECLARATOR_NONE;
-init_declarator_list_1
- comma .and identifier .emit VARIABLE_IDENTIFIER .and init_declarator_list_2;
-init_declarator_list_2
- init_declarator_list_3 .or init_declarator_list_4 .or .true .emit VARIABLE_NONE;
-init_declarator_list_3
- equals .and initializer .emit VARIABLE_INITIALIZER;
-init_declarator_list_4
- lbracket .and init_declarator_list_5 .and rbracket;
-init_declarator_list_5
- 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
- single_declaration_nospace .or single_declaration_space;
-single_declaration_space
- fully_specified_type_space .and single_declaration_space_1;
-single_declaration_nospace
- fully_specified_type_nospace .and single_declaration_nospace_1;
-single_declaration_space_1
- single_declaration_space_2 .emit VARIABLE_IDENTIFIER .or .true .emit VARIABLE_NONE;
-single_declaration_nospace_1
- single_declaration_nospace_2 .emit VARIABLE_IDENTIFIER .or .true .emit VARIABLE_NONE;
-single_declaration_space_2
- space .and identifier .and single_declaration_3;
-single_declaration_nospace_2
- identifier .and single_declaration_3;
-single_declaration_3
- single_declaration_4 .or single_declaration_5 .or .true .emit VARIABLE_NONE;
-single_declaration_4
- equals .and initializer .emit VARIABLE_INITIALIZER;
-single_declaration_5
- lbracket .and single_declaration_6 .and rbracket;
-single_declaration_6
- constant_expression .emit VARIABLE_ARRAY_EXPLICIT .or .true .emit VARIABLE_ARRAY_UNKNOWN;
-
-/*
- <fully_specified_type> ::= <type_specifier>
- | <type_qualifier> <type_specifier>
-*/
-fully_specified_type_space
- fully_specified_type_1 .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
- type_qualifier .and space;
-
-/*
- <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"
- | "sampler1D"
- | "sampler2D"
- | "sampler3D"
- | "samplerCube"
- | "sampler1DShadow"
- | "sampler2DShadow"
- | <struct_specifier>
- | <type_name>
-*/
-type_specifier_space
- "void" .emit TYPE_SPECIFIER_VOID .or
- "float" .emit TYPE_SPECIFIER_FLOAT .or
- "int" .emit TYPE_SPECIFIER_INT .or
- "bool" .emit TYPE_SPECIFIER_BOOL .or
- "vec2" .emit TYPE_SPECIFIER_VEC2 .or
- "vec3" .emit TYPE_SPECIFIER_VEC3 .or
- "vec4" .emit TYPE_SPECIFIER_VEC4 .or
- "bvec2" .emit TYPE_SPECIFIER_BVEC2 .or
- "bvec3" .emit TYPE_SPECIFIER_BVEC3 .or
- "bvec4" .emit TYPE_SPECIFIER_BVEC4 .or
- "ivec2" .emit TYPE_SPECIFIER_IVEC2 .or
- "ivec3" .emit TYPE_SPECIFIER_IVEC3 .or
- "ivec4" .emit TYPE_SPECIFIER_IVEC4 .or
- "mat2" .emit TYPE_SPECIFIER_MAT2 .or
- "mat3" .emit TYPE_SPECIFIER_MAT3 .or
- "mat4" .emit TYPE_SPECIFIER_MAT4 .or
- "sampler1D" .emit TYPE_SPECIFIER_SAMPLER1D .or
- "sampler2D" .emit TYPE_SPECIFIER_SAMPLER2D .or
- "sampler3D" .emit TYPE_SPECIFIER_SAMPLER3D .or
- "samplerCube" .emit TYPE_SPECIFIER_SAMPLERCUBE .or
- "sampler1DShadow" .emit TYPE_SPECIFIER_SAMPLER1DSHADOW .or
- "sampler2DShadow" .emit TYPE_SPECIFIER_SAMPLER2DSHADOW .or
- type_name .emit TYPE_SPECIFIER_TYPENAME;
-type_specifier_nospace
- struct_specifier .emit TYPE_SPECIFIER_STRUCT;
-
-/*
- <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;
-struct_specifier_1
- struct_specifier_2 .or .true .emit '\0';
-struct_specifier_2
- space .and identifier;
-
-/*
- <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
- struct_declaration_nospace .or struct_declaration_space;
-struct_declaration_space
- type_specifier_space .and space .and struct_declarator_list .and semicolon .emit FIELD_NONE;
-struct_declaration_nospace
- 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 .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 .and struct_declarator_1;
-struct_declarator_1
- struct_declarator_2 .emit FIELD_ARRAY .or .true .emit FIELD_NONE;
-struct_declarator_2
- lbracket .and constant_expression .and rbracket;
-
-/*
- <initializer> ::= <assignment_expression>
-*/
-initializer
- assignment_expression .and .true .emit OP_END;
-
-/*
- <declaration_statement> ::= <declaration>
-*/
-declaration_statement
- declaration;
-
-/*
- <statement> ::= <compound_statement>
- | <simple_statement>
-*/
-statement
- compound_statement .or simple_statement;
-statement_space
- compound_statement .or statement_space_1;
-statement_space_1
- 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
- .if (parsing_builtin != 0) __asm_statement .emit OP_ASM .or
- selection_statement .or
- iteration_statement .or
- jump_statement .or
- expression_statement .emit OP_EXPRESSION .or
- declaration_statement .emit OP_DECLARE;
-
-/*
- <compound_statement> ::= "{" "}"
- | "{" <statement_list> "}"
-*/
-compound_statement
- compound_statement_1 .emit OP_BLOCK_BEGIN_NEW_SCOPE .and .true .emit OP_END;
-compound_statement_1
- compound_statement_2 .or compound_statement_3;
-compound_statement_2
- lbrace .and rbrace;
-compound_statement_3
- 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 .or simple_statement;
-
-/*
- <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
- compound_statement_no_new_scope_2 .or compound_statement_no_new_scope_3;
-compound_statement_no_new_scope_2
- lbrace .and rbrace;
-compound_statement_no_new_scope_3
- lbrace .and statement_list .and rbrace;
-
-/*
- <statement_list> ::= <statement>
- | <statement_list> <statement>
-*/
-statement_list
- statement .and .loop statement;
-
-/*
- <expression_statement> ::= ";"
- | <expression> ";"
-*/
-expression_statement
- expression_statement_1 .or expression_statement_2;
-expression_statement_1
- semicolon .emit OP_PUSH_VOID .emit OP_END;
-expression_statement_2
- expression .and semicolon .emit OP_END;
-
-/*
- <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 .and selection_rest_statement_1;
-selection_rest_statement_1
- selection_rest_statement_2 .or .true .emit OP_EXPRESSION .emit OP_PUSH_VOID .emit OP_END;
-selection_rest_statement_2
- "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
- condition_1 .emit OP_DECLARE .emit DECLARATION_INIT_DECLARATOR_LIST .or
- condition_3 .emit OP_EXPRESSION;
-condition_1
- condition_1_nospace .or condition_1_space;
-condition_1_nospace
- fully_specified_type_nospace .and condition_2;
-condition_1_space
- fully_specified_type_space .and space .and condition_2;
-condition_2
- identifier .emit VARIABLE_IDENTIFIER .and equals .emit VARIABLE_INITIALIZER .and
- initializer .and .true .emit DECLARATOR_NONE;
-condition_3
- expression .and .true .emit OP_END;
-
-/*
- <iteration_statement> ::= "while" "(" <condition> ")" <statement_no_new_scope>
- | "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
- "while" .emit OP_WHILE .and lparen .error LPAREN_EXPECTED .and condition .and
- rparen .error RPAREN_EXPECTED .and statement_no_new_scope;
-iteration_statement_2
- "do" .emit OP_DO .and statement_space .and "while" .and lparen .error LPAREN_EXPECTED .and
- expression .and rparen .error RPAREN_EXPECTED .emit OP_END .and semicolon;
-iteration_statement_3
- "for" .emit OP_FOR .and lparen .error LPAREN_EXPECTED .and for_init_statement .and
- 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 .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 .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 .and semicolon .and for_rest_statement_1;
-for_rest_statement_1
- for_rest_statement_2 .or .true .emit OP_PUSH_VOID .emit OP_END;
-for_rest_statement_2
- expression .and .true .emit OP_END;
-
-/*
- <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;
-jump_statement_1
- "continue" .and semicolon .emit OP_CONTINUE;
-jump_statement_2
- "break" .and semicolon .emit OP_BREAK;
-jump_statement_3
- "return" .emit OP_RETURN .and optional_space .and expression .and semicolon .emit OP_END;
-jump_statement_4
- "return" .emit OP_RETURN .and semicolon .emit OP_PUSH_VOID .emit OP_END;
-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" .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 .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 .or floatconstant;
-
-/*
- <translation_unit> ::= <external_declaration>
- | <translation_unit> <external_declaration>
-*/
-translation_unit
- optional_space .emit REVISION .and external_declaration .error INVALID_EXTERNAL_DECLARATION .and
- .loop external_declaration .and optional_space .and
- '\0' .error INVALID_EXTERNAL_DECLARATION .emit EXTERNAL_NULL;
-
-/*
- <external_declaration> ::= <function_definition>
- | <declaration>
-*/
-external_declaration
- function_definition .emit EXTERNAL_FUNCTION_DEFINITION .or
- declaration .emit EXTERNAL_DECLARATION;
-
-/*
- <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 */
-
-digit_oct
- '0'-'7';
-
-digit_dec
- '0'-'9';
-
-digit_hex
- '0'-'9' .or 'A'-'F' .or 'a'-'f';
-
-id_character_first
- 'a'-'z' .or 'A'-'Z' .or '_';
-
-id_character_next
- id_character_first .or digit_dec;
-
-identifier
- id_character_first .emit * .and .loop id_character_next .emit * .and .true .emit '\0';
-
-float
- float_1 .or float_2;
-float_1
- float_fractional_constant .and float_optional_exponent_part;
-float_2
- float_digit_sequence .and .true .emit '\0' .and float_exponent_part;
-
-float_fractional_constant
- float_fractional_constant_1 .or float_fractional_constant_2 .or float_fractional_constant_3;
-float_fractional_constant_1
- float_digit_sequence .and '.' .and float_digit_sequence;
-float_fractional_constant_2
- float_digit_sequence .and '.' .and .true .emit '\0';
-float_fractional_constant_3
- '.' .emit '\0' .and float_digit_sequence;
-
-float_optional_exponent_part
- float_exponent_part .or .true .emit '\0';
-
-float_digit_sequence
- digit_dec .emit * .and .loop digit_dec .emit * .and .true .emit '\0';
-
-float_exponent_part
- float_exponent_part_1 .or float_exponent_part_2;
-float_exponent_part_1
- 'e' .and float_optional_sign .and float_digit_sequence;
-float_exponent_part_2
- 'E' .and float_optional_sign .and float_digit_sequence;
-
-float_optional_sign
- float_sign .or .true;
-
-float_sign
- '+' .or '-' .emit '-';
-
-integer
- integer_hex .or integer_oct .or integer_dec;
-
-integer_hex
- '0' .and integer_hex_1 .emit 0x10 .and digit_hex .emit * .and .loop digit_hex .emit * .and
- .true .emit '\0';
-integer_hex_1
- 'x' .or 'X';
-
-integer_oct
- '0' .emit 8 .emit * .and .loop digit_oct .emit * .and .true .emit '\0';
-
-integer_dec
- digit_dec .emit 10 .emit * .and .loop digit_dec .emit * .and .true .emit '\0';
-
-boolean
- "true" .emit 2 .emit '1' .emit '\0' .or
- "false" .emit 2 .emit '0' .emit '\0';
-
-type_name
- identifier;
-
-field_selection
- identifier;
-
-floatconstant
- float .emit OP_PUSH_FLOAT;
-
-intconstant
- integer .emit OP_PUSH_INT;
-
-boolconstant
- boolean .emit OP_PUSH_BOOL;
-
-optional_space
- .loop single_space;
-
-space
- single_space .and .loop single_space;
-
-single_space
- white_char .or c_style_comment_block .or cpp_style_comment_block;
-
-white_char
- ' ' .or '\t' .or new_line .or '\v' .or '\f';
-
-new_line
- cr_lf .or lf_cr .or '\n' .or '\r';
-
-cr_lf
- '\r' .and '\n';
-
-lf_cr
- '\n' .and '\r';
-
-c_style_comment_block
- '/' .and '*' .and c_style_comment_rest;
-
-c_style_comment_rest
- .loop c_style_comment_char_no_star .and c_style_comment_rest_1;
-c_style_comment_rest_1
- c_style_comment_end .or c_style_comment_rest_2;
-c_style_comment_rest_2
- '*' .and c_style_comment_rest;
-
-c_style_comment_char_no_star
- '\x2B'-'\xFF' .or '\x01'-'\x29';
-
-c_style_comment_end
- '*' .and '/';
-
-cpp_style_comment_block
- '/' .and '/' .and cpp_style_comment_block_1;
-cpp_style_comment_block_1
- cpp_style_comment_block_2 .or cpp_style_comment_block_3;
-cpp_style_comment_block_2
- .loop cpp_style_comment_char .and new_line;
-cpp_style_comment_block_3
- .loop cpp_style_comment_char;
-
-cpp_style_comment_char
- '\x0E'-'\xFF' .or '\x01'-'\x09' .or '\x0B'-'\x0C';
-
-/* lexical rulez */
-
-/*ampersand
- optional_space .and '&' .and optional_space;*/
-
-ampersandampersand
- optional_space .and '&' .and '&' .and optional_space;
-
-/*ampersandequals
- optional_space .and '&' .and '=' .and optional_space;*/
-
-/*bar
- optional_space .and '|' .and optional_space;*/
-
-barbar
- optional_space .and '|' .and '|' .and optional_space;
-
-/*barequals
- optional_space .and '|' .and '=' .and optional_space;*/
-
-bang
- optional_space .and '!' .and optional_space;
-
-bangequals
- optional_space .and '!' .and '=' .and optional_space;
-
-/*caret
- optional_space .and '^' .and optional_space;*/
-
-caretcaret
- optional_space .and '^' .and '^' .and optional_space;
-
-/*caretequals
- optional_space .and '^' .and '=' .and optional_space;*/
-
-colon
- optional_space .and ':' .and optional_space;
-
-comma
- optional_space .and ',' .and optional_space;
-
-dot
- optional_space .and '.' .and optional_space;
-
-equals
- optional_space .and '=' .and optional_space;
-
-equalsequals
- optional_space .and '=' .and '=' .and optional_space;
-
-greater
- optional_space .and '>' .and optional_space;
-
-greaterequals
- optional_space .and '>' .and '=' .and optional_space;
-
-/*greatergreater
- optional_space .and '>' .and '>' .and optional_space;*/
-
-/*greatergreaterequals
- optional_space .and '>' .and '>' .and '=' .and optional_space;*/
-
-lbrace
- optional_space .and '{' .and optional_space;
-
-lbracket
- optional_space .and '[' .and optional_space;
-
-less
- optional_space .and '<' .and optional_space;
-
-lessequals
- optional_space .and '<' .and '=' .and optional_space;
-
-/*lessless
- optional_space .and '<' .and '<' .and optional_space;*/
-
-/*lesslessequals
- optional_space .and '<' .and '<' .and '=' .and optional_space;*/
-
-lparen
- optional_space .and '(' .and optional_space;
-
-minus
- optional_space .and '-' .and optional_space;
-
-minusequals
- optional_space .and '-' .and '=' .and optional_space;
-
-minusminus
- optional_space .and '-' .and '-' .and optional_space;
-
-/*percent
- optional_space .and '%' .and optional_space;*/
-
-/*percentequals
- optional_space .and '%' .and '=' .and optional_space;*/
-
-plus
- optional_space .and '+' .and optional_space;
-
-plusequals
- optional_space .and '+' .and '=' .and optional_space;
-
-plusplus
- optional_space .and '+' .and '+' .and optional_space;
-
-question
- optional_space .and '?' .and optional_space;
-
-rbrace
- optional_space .and '}' .and optional_space;
-
-rbracket
- optional_space .and ']' .and optional_space;
-
-rparen
- optional_space .and ')' .and optional_space;
-
-semicolon
- optional_space .and ';' .and optional_space;
-
-slash
- optional_space .and '/' .and optional_space;
-
-slashequals
- optional_space .and '/' .and '=' .and optional_space;
-
-star
- optional_space .and '*' .and optional_space;
-
-starequals
- optional_space .and '*' .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 string_lexer;
-
-string_lexer
- lex_first_identifier_character .and .loop lex_next_identifier_character;
-
-lex_first_identifier_character
- 'a'-'z' .or 'A'-'Z' .or '_';
-
-lex_next_identifier_character
- 'a'-'z' .or 'A'-'Z' .or '0'-'9' .or '_';
-
-/* error rulez - these are used by error messages */
-
-err_token
- '~' .or '`' .or '!' .or '@' .or '#' .or '$' .or '%' .or '^' .or '&' .or '*' .or '(' .or ')' .or
- '-' .or '+' .or '=' .or '|' .or '\\' .or '[' .or ']' .or '{' .or '}' .or ':' .or ';' .or '"' .or
- '\'' .or '<' .or ',' .or '>' .or '.' .or '/' .or '?' .or err_identifier;
-
-err_identifier
- id_character_first .and .loop id_character_next;
-
+/* + * Mesa 3-D graphics library + * Version: 6.5 + * + * Copyright (C) 2004-2006 Brian Paul 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"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included + * in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN + * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ + +/* + * \file slang_shader.syn + * slang vertex/fragment shader syntax + * \author Michal Krol + */ + +/* + * 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"; + */ + +.syntax translation_unit; + +/* revision number - increment after each change affecting emitted output */ +.emtcode REVISION 3 + +/* external declaration */ +.emtcode EXTERNAL_NULL 0 +.emtcode EXTERNAL_FUNCTION_DEFINITION 1 +.emtcode EXTERNAL_DECLARATION 2 + +/* declaration */ +.emtcode DECLARATION_FUNCTION_PROTOTYPE 1 +.emtcode DECLARATION_INIT_DECLARATOR_LIST 2 + +/* function type */ +.emtcode FUNCTION_ORDINARY 0 +.emtcode FUNCTION_CONSTRUCTOR 1 +.emtcode FUNCTION_OPERATOR 2 + +/* operator type */ +.emtcode OPERATOR_ADDASSIGN 1 +.emtcode OPERATOR_SUBASSIGN 2 +.emtcode OPERATOR_MULASSIGN 3 +.emtcode OPERATOR_DIVASSIGN 4 +/*.emtcode OPERATOR_MODASSIGN 5*/ +/*.emtcode OPERATOR_LSHASSIGN 6*/ +/*.emtcode OPERATOR_RSHASSIGN 7*/ +/*.emtcode OPERATOR_ORASSIGN 8*/ +/*.emtcode OPERATOR_XORASSIGN 9*/ +/*.emtcode OPERATOR_ANDASSIGN 10*/ +.emtcode OPERATOR_LOGICALXOR 11 +/*.emtcode OPERATOR_BITOR 12*/ +/*.emtcode OPERATOR_BITXOR 13*/ +/*.emtcode OPERATOR_BITAND 14*/ +.emtcode OPERATOR_LESS 15 +.emtcode OPERATOR_GREATER 16 +.emtcode OPERATOR_LESSEQUAL 17 +.emtcode OPERATOR_GREATEREQUAL 18 +/*.emtcode OPERATOR_LSHIFT 19*/ +/*.emtcode OPERATOR_RSHIFT 20*/ +.emtcode OPERATOR_MULTIPLY 21 +.emtcode OPERATOR_DIVIDE 22 +/*.emtcode OPERATOR_MODULUS 23*/ +.emtcode OPERATOR_INCREMENT 24 +.emtcode OPERATOR_DECREMENT 25 +.emtcode OPERATOR_PLUS 26 +.emtcode OPERATOR_MINUS 27 +/*.emtcode OPERATOR_COMPLEMENT 28*/ +.emtcode OPERATOR_NOT 29 + +/* init declarator list */ +.emtcode DECLARATOR_NONE 0 +.emtcode DECLARATOR_NEXT 1 + +/* variable declaration */ +.emtcode VARIABLE_NONE 0 +.emtcode VARIABLE_IDENTIFIER 1 +.emtcode VARIABLE_INITIALIZER 2 +.emtcode VARIABLE_ARRAY_EXPLICIT 3 +.emtcode VARIABLE_ARRAY_UNKNOWN 4 + +/* type qualifier */ +.emtcode TYPE_QUALIFIER_NONE 0 +.emtcode TYPE_QUALIFIER_CONST 1 +.emtcode TYPE_QUALIFIER_ATTRIBUTE 2 +.emtcode TYPE_QUALIFIER_VARYING 3 +.emtcode TYPE_QUALIFIER_UNIFORM 4 +.emtcode TYPE_QUALIFIER_FIXEDOUTPUT 5 +.emtcode TYPE_QUALIFIER_FIXEDINPUT 6 + +/* type specifier */ +.emtcode TYPE_SPECIFIER_VOID 0 +.emtcode TYPE_SPECIFIER_BOOL 1 +.emtcode TYPE_SPECIFIER_BVEC2 2 +.emtcode TYPE_SPECIFIER_BVEC3 3 +.emtcode TYPE_SPECIFIER_BVEC4 4 +.emtcode TYPE_SPECIFIER_INT 5 +.emtcode TYPE_SPECIFIER_IVEC2 6 +.emtcode TYPE_SPECIFIER_IVEC3 7 +.emtcode TYPE_SPECIFIER_IVEC4 8 +.emtcode TYPE_SPECIFIER_FLOAT 9 +.emtcode TYPE_SPECIFIER_VEC2 10 +.emtcode TYPE_SPECIFIER_VEC3 11 +.emtcode TYPE_SPECIFIER_VEC4 12 +.emtcode TYPE_SPECIFIER_MAT2 13 +.emtcode TYPE_SPECIFIER_MAT3 14 +.emtcode TYPE_SPECIFIER_MAT4 15 +.emtcode TYPE_SPECIFIER_SAMPLER1D 16 +.emtcode TYPE_SPECIFIER_SAMPLER2D 17 +.emtcode TYPE_SPECIFIER_SAMPLER3D 18 +.emtcode TYPE_SPECIFIER_SAMPLERCUBE 19 +.emtcode TYPE_SPECIFIER_SAMPLER1DSHADOW 20 +.emtcode TYPE_SPECIFIER_SAMPLER2DSHADOW 21 +.emtcode TYPE_SPECIFIER_STRUCT 22 +.emtcode TYPE_SPECIFIER_TYPENAME 23 + +/* structure field */ +.emtcode FIELD_NONE 0 +.emtcode FIELD_NEXT 1 +.emtcode FIELD_ARRAY 2 + +/* operation */ +.emtcode OP_END 0 +.emtcode OP_BLOCK_BEGIN_NO_NEW_SCOPE 1 +.emtcode OP_BLOCK_BEGIN_NEW_SCOPE 2 +.emtcode OP_DECLARE 3 +.emtcode OP_ASM 4 +.emtcode OP_BREAK 5 +.emtcode OP_CONTINUE 6 +.emtcode OP_DISCARD 7 +.emtcode OP_RETURN 8 +.emtcode OP_EXPRESSION 9 +.emtcode OP_IF 10 +.emtcode OP_WHILE 11 +.emtcode OP_DO 12 +.emtcode OP_FOR 13 +.emtcode OP_PUSH_VOID 14 +.emtcode OP_PUSH_BOOL 15 +.emtcode OP_PUSH_INT 16 +.emtcode OP_PUSH_FLOAT 17 +.emtcode OP_PUSH_IDENTIFIER 18 +.emtcode OP_SEQUENCE 19 +.emtcode OP_ASSIGN 20 +.emtcode OP_ADDASSIGN 21 +.emtcode OP_SUBASSIGN 22 +.emtcode OP_MULASSIGN 23 +.emtcode OP_DIVASSIGN 24 +/*.emtcode OP_MODASSIGN 25*/ +/*.emtcode OP_LSHASSIGN 26*/ +/*.emtcode OP_RSHASSIGN 27*/ +/*.emtcode OP_ORASSIGN 28*/ +/*.emtcode OP_XORASSIGN 29*/ +/*.emtcode OP_ANDASSIGN 30*/ +.emtcode OP_SELECT 31 +.emtcode OP_LOGICALOR 32 +.emtcode OP_LOGICALXOR 33 +.emtcode OP_LOGICALAND 34 +/*.emtcode OP_BITOR 35*/ +/*.emtcode OP_BITXOR 36*/ +/*.emtcode OP_BITAND 37*/ +.emtcode OP_EQUAL 38 +.emtcode OP_NOTEQUAL 39 +.emtcode OP_LESS 40 +.emtcode OP_GREATER 41 +.emtcode OP_LESSEQUAL 42 +.emtcode OP_GREATEREQUAL 43 +/*.emtcode OP_LSHIFT 44*/ +/*.emtcode OP_RSHIFT 45*/ +.emtcode OP_ADD 46 +.emtcode OP_SUBTRACT 47 +.emtcode OP_MULTIPLY 48 +.emtcode OP_DIVIDE 49 +/*.emtcode OP_MODULUS 50*/ +.emtcode OP_PREINCREMENT 51 +.emtcode OP_PREDECREMENT 52 +.emtcode OP_PLUS 53 +.emtcode OP_MINUS 54 +/*.emtcode OP_COMPLEMENT 55*/ +.emtcode OP_NOT 56 +.emtcode OP_SUBSCRIPT 57 +.emtcode OP_CALL 58 +.emtcode OP_FIELD 59 +.emtcode OP_POSTINCREMENT 60 +.emtcode OP_POSTDECREMENT 61 + +/* parameter qualifier */ +.emtcode PARAM_QUALIFIER_IN 0 +.emtcode PARAM_QUALIFIER_OUT 1 +.emtcode PARAM_QUALIFIER_INOUT 2 + +/* function parameter */ +.emtcode PARAMETER_NONE 0 +.emtcode PARAMETER_NEXT 1 + +/* function parameter array presence */ +.emtcode PARAMETER_ARRAY_NOT_PRESENT 0 +.emtcode PARAMETER_ARRAY_PRESENT 1 + +.errtext INVALID_EXTERNAL_DECLARATION "error 2001: invalid external declaration" +.errtext INVALID_OPERATOR_OVERRIDE "error 2002: invalid operator override" +.errtext LBRACE_EXPECTED "error 2003: '{' expected but '$err_token$' found" +.errtext LPAREN_EXPECTED "error 2004: '(' expected but '$err_token$' found" +.errtext RPAREN_EXPECTED "error 2005: ')' expected but '$err_token$' found" + +/* 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 */ +.regbyte shader_type 0 + +/* + <variable_identifier> ::= <identifier> +*/ +variable_identifier + identifier .emit OP_PUSH_IDENTIFIER; + +/* + <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 + postfix_expression_1 .and .loop postfix_expression_2; +postfix_expression_1 + function_call .or primary_expression; +postfix_expression_2 + postfix_expression_3 .or postfix_expression_4 .or + plusplus .emit OP_POSTINCREMENT .or + minusminus .emit OP_POSTDECREMENT; +postfix_expression_3 + lbracket .and integer_expression .and rbracket .emit OP_SUBSCRIPT; +postfix_expression_4 + dot .and field_selection .emit OP_FIELD; + +/* + <integer_expression> ::= <expression> +*/ +integer_expression + expression; + +/* + <function_call> ::= <function_call_generic> +*/ +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_generic_1 .or function_call_generic_2; +function_call_generic_1 + function_call_header_with_parameters .and rparen .error RPAREN_EXPECTED; +function_call_generic_2 + 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 .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 .and assignment_expression .and .true .emit OP_END .and + .loop function_call_header_with_parameters_1; +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 .and lparen; + +/* + <function_identifier> ::= <constructor_identifier> + | <identifier> + +note: <constructor_identifier> has been deleted +*/ +function_identifier + identifier; + +/* + <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*/; +unary_expression_1 + plusplus .and unary_expression .and .true .emit OP_PREINCREMENT; +unary_expression_2 + minusminus .and unary_expression .and .true .emit OP_PREDECREMENT; +unary_expression_3 + plus .and unary_expression .and .true .emit OP_PLUS; +unary_expression_4 + minus .and unary_expression .and .true .emit OP_MINUS; +unary_expression_5 + bang .and unary_expression .and .true .emit OP_NOT; +/*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 .and .loop multiplicative_expression_1; +multiplicative_expression_1 + multiplicative_expression_2 .or multiplicative_expression_3/* .or multiplicative_expression_4*/; +multiplicative_expression_2 + star .and unary_expression .and .true .emit OP_MULTIPLY; +multiplicative_expression_3 + slash .and unary_expression .and .true .emit OP_DIVIDE; +/*multiplicative_expression_4 + 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 .and .loop additive_expression_1; +additive_expression_1 + additive_expression_2 .or additive_expression_3; +additive_expression_2 + plus .and multiplicative_expression .and .true .emit OP_ADD; +additive_expression_3 + 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/* .and .loop shift_expression_1*/; +/*shift_expression_1 + shift_expression_2 .or shift_expression_3;*/ +/*shift_expression_2 + lessless .and additive_expression .and .true .emit OP_LSHIFT;*/ +/*shift_expression_3 + 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 .and .loop relational_expression_1; +relational_expression_1 + relational_expression_2 .or relational_expression_3 .or relational_expression_4 .or + relational_expression_5; +relational_expression_2 + lessequals .and shift_expression .and .true .emit OP_LESSEQUAL; +relational_expression_3 + greaterequals .and shift_expression .and .true .emit OP_GREATEREQUAL; +relational_expression_4 + less .and shift_expression .and .true .emit OP_LESS; +relational_expression_5 + 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 .and .loop equality_expression_1; +equality_expression_1 + equality_expression_2 .or equality_expression_3; +equality_expression_2 + equalsequals .and relational_expression .and .true .emit OP_EQUAL; +equality_expression_3 + bangequals .and relational_expression .and .true .emit OP_NOTEQUAL; + +/* + <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/* .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/* .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 .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 .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 .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 .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 + assignment_expression_1 .or assignment_expression_2 .or assignment_expression_3 .or + assignment_expression_4 .or assignment_expression_5/* .or assignment_expression_6 .or + assignment_expression_7 .or assignment_expression_8 .or assignment_expression_9 .or + assignment_expression_10 .or assignment_expression_11*/ .or conditional_expression; +assignment_expression_1 + unary_expression .and equals .and assignment_expression .and .true .emit OP_ASSIGN; +assignment_expression_2 + unary_expression .and starequals .and assignment_expression .and .true .emit OP_MULASSIGN; +assignment_expression_3 + unary_expression .and slashequals .and assignment_expression .and .true .emit OP_DIVASSIGN; +assignment_expression_4 + unary_expression .and plusequals .and assignment_expression .and .true .emit OP_ADDASSIGN; +assignment_expression_5 + unary_expression .and minusequals .and assignment_expression .and .true .emit OP_SUBASSIGN; +/*assignment_expression_6 + unary_expression .and percentequals .and assignment_expression .and .true .emit OP_MODASSIGN;*/ +/*assignment_expression_7 + unary_expression .and lesslessequals .and assignment_expression .and .true .emit OP_LSHASSIGN;*/ +/*assignment_expression_8 + unary_expression .and greatergreaterequals .and assignment_expression .and + .true .emit OP_RSHASSIGN;*/ +/*assignment_expression_9 + unary_expression .and ampersandequals .and assignment_expression .and .true .emit OP_ANDASSIGN;*/ +/*assignment_expression_10 + unary_expression .and caretequals .and assignment_expression .and .true .emit OP_XORASSIGN;*/ +/*assignment_expression_11 + unary_expression .and barequals .and assignment_expression .and .true .emit OP_ORASSIGN;*/ + +/* + <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 .and .true .emit OP_END; + +/* + <declaration> ::= <function_prototype> ";" + | <init_declarator_list> ";" +*/ +declaration + declaration_1 .or declaration_2; +declaration_1 + function_prototype .emit DECLARATION_FUNCTION_PROTOTYPE .and semicolon; +declaration_2 + init_declarator_list .emit DECLARATION_INIT_DECLARATOR_LIST .and semicolon; + +/* + <function_prototype> ::= <function_header> "void" ")" + | <function_declarator> ")" +*/ +function_prototype + function_prototype_1 .or function_prototype_2; +function_prototype_1 + function_header .and "void" .and rparen .error RPAREN_EXPECTED .emit PARAMETER_NONE; +function_prototype_2 + function_declarator .and rparen .error RPAREN_EXPECTED .emit PARAMETER_NONE; + +/* + <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 .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 + function_header_nospace .or function_header_space; +function_header_space + fully_specified_type_space .and space .and function_decl_identifier .and lparen; +function_header_nospace + 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 + .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" .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_operator + plusplus .emit OPERATOR_INCREMENT .or + plusequals .emit OPERATOR_ADDASSIGN .or + plus .emit OPERATOR_PLUS .or + minusminus .emit OPERATOR_DECREMENT .or + minusequals .emit OPERATOR_SUBASSIGN .or + minus .emit OPERATOR_MINUS .or + bang .emit OPERATOR_NOT .or + starequals .emit OPERATOR_MULASSIGN .or + star .emit OPERATOR_MULTIPLY .or + slashequals .emit OPERATOR_DIVASSIGN .or + slash .emit OPERATOR_DIVIDE .or + lessequals .emit OPERATOR_LESSEQUAL .or + /*lesslessequals .emit OPERATOR_LSHASSIGN .or*/ + /*lessless .emit OPERATOR_LSHIFT .or*/ + less .emit OPERATOR_LESS .or + greaterequals .emit OPERATOR_GREATEREQUAL .or + /*greatergreaterequals .emit OPERATOR_RSHASSIGN .or*/ + /*greatergreater .emit OPERATOR_RSHIFT .or*/ + greater .emit OPERATOR_GREATER .or + /*percentequals .emit OPERATOR_MODASSIGN .or*/ + /*percent .emit OPERATOR_MODULUS .or*/ + /*ampersandequals .emit OPERATOR_ANDASSIGN */ + /*ampersand .emit OPERATOR_BITAND .or*/ + /*barequals .emit OPERATOR_ORASSIGN .or*/ + /*bar .emit OPERATOR_BITOR .or*/ + /*tilde .emit OPERATOR_COMPLEMENT .or*/ + /*caretequals .emit OPERATOR_XORASSIGN .or*/ + caretcaret .emit OPERATOR_LOGICALXOR /*.or + caret .emit OPERATOR_BITXOR*/; + +/* + <parameter_declarator> ::= <type_specifier> <identifier> + | <type_specifier> <identifier> "[" <constant_expression> + "]" +*/ +parameter_declarator + parameter_declarator_nospace .or parameter_declarator_space; +parameter_declarator_nospace + type_specifier_nospace .and identifier .and parameter_declarator_1; +parameter_declarator_space + type_specifier_space .and space .and identifier .and parameter_declarator_1; +parameter_declarator_1 + parameter_declarator_2 .emit PARAMETER_ARRAY_PRESENT .or + .true .emit PARAMETER_ARRAY_NOT_PRESENT; +parameter_declarator_2 + 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 + parameter_declaration_1 .emit PARAMETER_NEXT; +parameter_declaration_1 + parameter_declaration_2 .or parameter_declaration_3; +parameter_declaration_2 + type_qualifier .and space .and parameter_qualifier .and parameter_declaration_4; +parameter_declaration_3 + parameter_qualifier .emit TYPE_QUALIFIER_NONE .and parameter_declaration_4; +parameter_declaration_4 + parameter_declarator .or parameter_type_specifier; + +/* + <parameter_qualifier> ::= "in" + | "out" + | "inout" + | "" +*/ +parameter_qualifier + parameter_qualifier_1 .or .true .emit PARAM_QUALIFIER_IN; +parameter_qualifier_1 + parameter_qualifier_2 .and space; +parameter_qualifier_2 + "in" .emit PARAM_QUALIFIER_IN .or + "out" .emit PARAM_QUALIFIER_OUT .or + "inout" .emit PARAM_QUALIFIER_INOUT; + +/* + <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 + type_specifier_nospace .or type_specifier_space; +parameter_type_specifier_2 + parameter_type_specifier_3 .emit PARAMETER_ARRAY_PRESENT .or + .true .emit PARAMETER_ARRAY_NOT_PRESENT; +parameter_type_specifier_3 + 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 .and .loop init_declarator_list_1 .emit DECLARATOR_NEXT .and + .true .emit DECLARATOR_NONE; +init_declarator_list_1 + comma .and identifier .emit VARIABLE_IDENTIFIER .and init_declarator_list_2; +init_declarator_list_2 + init_declarator_list_3 .or init_declarator_list_4 .or .true .emit VARIABLE_NONE; +init_declarator_list_3 + equals .and initializer .emit VARIABLE_INITIALIZER; +init_declarator_list_4 + lbracket .and init_declarator_list_5 .and rbracket; +init_declarator_list_5 + 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 + single_declaration_nospace .or single_declaration_space; +single_declaration_space + fully_specified_type_space .and single_declaration_space_1; +single_declaration_nospace + fully_specified_type_nospace .and single_declaration_nospace_1; +single_declaration_space_1 + single_declaration_space_2 .emit VARIABLE_IDENTIFIER .or .true .emit VARIABLE_NONE; +single_declaration_nospace_1 + single_declaration_nospace_2 .emit VARIABLE_IDENTIFIER .or .true .emit VARIABLE_NONE; +single_declaration_space_2 + space .and identifier .and single_declaration_3; +single_declaration_nospace_2 + identifier .and single_declaration_3; +single_declaration_3 + single_declaration_4 .or single_declaration_5 .or .true .emit VARIABLE_NONE; +single_declaration_4 + equals .and initializer .emit VARIABLE_INITIALIZER; +single_declaration_5 + lbracket .and single_declaration_6 .and rbracket; +single_declaration_6 + constant_expression .emit VARIABLE_ARRAY_EXPLICIT .or .true .emit VARIABLE_ARRAY_UNKNOWN; + +/* + <fully_specified_type> ::= <type_specifier> + | <type_qualifier> <type_specifier> +*/ +fully_specified_type_space + fully_specified_type_1 .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 + type_qualifier .and space; + +/* + <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" + | "sampler1D" + | "sampler2D" + | "sampler3D" + | "samplerCube" + | "sampler1DShadow" + | "sampler2DShadow" + | <struct_specifier> + | <type_name> +*/ +type_specifier_space + "void" .emit TYPE_SPECIFIER_VOID .or + "float" .emit TYPE_SPECIFIER_FLOAT .or + "int" .emit TYPE_SPECIFIER_INT .or + "bool" .emit TYPE_SPECIFIER_BOOL .or + "vec2" .emit TYPE_SPECIFIER_VEC2 .or + "vec3" .emit TYPE_SPECIFIER_VEC3 .or + "vec4" .emit TYPE_SPECIFIER_VEC4 .or + "bvec2" .emit TYPE_SPECIFIER_BVEC2 .or + "bvec3" .emit TYPE_SPECIFIER_BVEC3 .or + "bvec4" .emit TYPE_SPECIFIER_BVEC4 .or + "ivec2" .emit TYPE_SPECIFIER_IVEC2 .or + "ivec3" .emit TYPE_SPECIFIER_IVEC3 .or + "ivec4" .emit TYPE_SPECIFIER_IVEC4 .or + "mat2" .emit TYPE_SPECIFIER_MAT2 .or + "mat3" .emit TYPE_SPECIFIER_MAT3 .or + "mat4" .emit TYPE_SPECIFIER_MAT4 .or + "sampler1D" .emit TYPE_SPECIFIER_SAMPLER1D .or + "sampler2D" .emit TYPE_SPECIFIER_SAMPLER2D .or + "sampler3D" .emit TYPE_SPECIFIER_SAMPLER3D .or + "samplerCube" .emit TYPE_SPECIFIER_SAMPLERCUBE .or + "sampler1DShadow" .emit TYPE_SPECIFIER_SAMPLER1DSHADOW .or + "sampler2DShadow" .emit TYPE_SPECIFIER_SAMPLER2DSHADOW .or + type_name .emit TYPE_SPECIFIER_TYPENAME; +type_specifier_nospace + struct_specifier .emit TYPE_SPECIFIER_STRUCT; + +/* + <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; +struct_specifier_1 + struct_specifier_2 .or .true .emit '\0'; +struct_specifier_2 + space .and identifier; + +/* + <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 + struct_declaration_nospace .or struct_declaration_space; +struct_declaration_space + type_specifier_space .and space .and struct_declarator_list .and semicolon .emit FIELD_NONE; +struct_declaration_nospace + 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 .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 .and struct_declarator_1; +struct_declarator_1 + struct_declarator_2 .emit FIELD_ARRAY .or .true .emit FIELD_NONE; +struct_declarator_2 + lbracket .and constant_expression .and rbracket; + +/* + <initializer> ::= <assignment_expression> +*/ +initializer + assignment_expression .and .true .emit OP_END; + +/* + <declaration_statement> ::= <declaration> +*/ +declaration_statement + declaration; + +/* + <statement> ::= <compound_statement> + | <simple_statement> +*/ +statement + compound_statement .or simple_statement; +statement_space + compound_statement .or statement_space_1; +statement_space_1 + 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 + .if (parsing_builtin != 0) __asm_statement .emit OP_ASM .or + selection_statement .or + iteration_statement .or + jump_statement .or + expression_statement .emit OP_EXPRESSION .or + declaration_statement .emit OP_DECLARE; + +/* + <compound_statement> ::= "{" "}" + | "{" <statement_list> "}" +*/ +compound_statement + compound_statement_1 .emit OP_BLOCK_BEGIN_NEW_SCOPE .and .true .emit OP_END; +compound_statement_1 + compound_statement_2 .or compound_statement_3; +compound_statement_2 + lbrace .and rbrace; +compound_statement_3 + 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 .or simple_statement; + +/* + <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 + compound_statement_no_new_scope_2 .or compound_statement_no_new_scope_3; +compound_statement_no_new_scope_2 + lbrace .and rbrace; +compound_statement_no_new_scope_3 + lbrace .and statement_list .and rbrace; + +/* + <statement_list> ::= <statement> + | <statement_list> <statement> +*/ +statement_list + statement .and .loop statement; + +/* + <expression_statement> ::= ";" + | <expression> ";" +*/ +expression_statement + expression_statement_1 .or expression_statement_2; +expression_statement_1 + semicolon .emit OP_PUSH_VOID .emit OP_END; +expression_statement_2 + expression .and semicolon .emit OP_END; + +/* + <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 .and selection_rest_statement_1; +selection_rest_statement_1 + selection_rest_statement_2 .or .true .emit OP_EXPRESSION .emit OP_PUSH_VOID .emit OP_END; +selection_rest_statement_2 + "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 + condition_1 .emit OP_DECLARE .emit DECLARATION_INIT_DECLARATOR_LIST .or + condition_3 .emit OP_EXPRESSION; +condition_1 + condition_1_nospace .or condition_1_space; +condition_1_nospace + fully_specified_type_nospace .and condition_2; +condition_1_space + fully_specified_type_space .and space .and condition_2; +condition_2 + identifier .emit VARIABLE_IDENTIFIER .and equals .emit VARIABLE_INITIALIZER .and + initializer .and .true .emit DECLARATOR_NONE; +condition_3 + expression .and .true .emit OP_END; + +/* + <iteration_statement> ::= "while" "(" <condition> ")" <statement_no_new_scope> + | "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 + "while" .emit OP_WHILE .and lparen .error LPAREN_EXPECTED .and condition .and + rparen .error RPAREN_EXPECTED .and statement_no_new_scope; +iteration_statement_2 + "do" .emit OP_DO .and statement_space .and "while" .and lparen .error LPAREN_EXPECTED .and + expression .and rparen .error RPAREN_EXPECTED .emit OP_END .and semicolon; +iteration_statement_3 + "for" .emit OP_FOR .and lparen .error LPAREN_EXPECTED .and for_init_statement .and + 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 .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 .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 .and semicolon .and for_rest_statement_1; +for_rest_statement_1 + for_rest_statement_2 .or .true .emit OP_PUSH_VOID .emit OP_END; +for_rest_statement_2 + expression .and .true .emit OP_END; + +/* + <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; +jump_statement_1 + "continue" .and semicolon .emit OP_CONTINUE; +jump_statement_2 + "break" .and semicolon .emit OP_BREAK; +jump_statement_3 + "return" .emit OP_RETURN .and optional_space .and expression .and semicolon .emit OP_END; +jump_statement_4 + "return" .emit OP_RETURN .and semicolon .emit OP_PUSH_VOID .emit OP_END; +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" .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 .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 .or floatconstant; + +/* + <translation_unit> ::= <external_declaration> + | <translation_unit> <external_declaration> +*/ +translation_unit + optional_space .emit REVISION .and external_declaration .error INVALID_EXTERNAL_DECLARATION .and + .loop external_declaration .and optional_space .and + '\0' .error INVALID_EXTERNAL_DECLARATION .emit EXTERNAL_NULL; + +/* + <external_declaration> ::= <function_definition> + | <declaration> +*/ +external_declaration + function_definition .emit EXTERNAL_FUNCTION_DEFINITION .or + declaration .emit EXTERNAL_DECLARATION; + +/* + <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 */ + +digit_oct + '0'-'7'; + +digit_dec + '0'-'9'; + +digit_hex + '0'-'9' .or 'A'-'F' .or 'a'-'f'; + +id_character_first + 'a'-'z' .or 'A'-'Z' .or '_'; + +id_character_next + id_character_first .or digit_dec; + +identifier + id_character_first .emit * .and .loop id_character_next .emit * .and .true .emit '\0'; + +float + float_1 .or float_2; +float_1 + float_fractional_constant .and float_optional_exponent_part; +float_2 + float_digit_sequence .and .true .emit '\0' .and float_exponent_part; + +float_fractional_constant + float_fractional_constant_1 .or float_fractional_constant_2 .or float_fractional_constant_3; +float_fractional_constant_1 + float_digit_sequence .and '.' .and float_digit_sequence; +float_fractional_constant_2 + float_digit_sequence .and '.' .and .true .emit '\0'; +float_fractional_constant_3 + '.' .emit '\0' .and float_digit_sequence; + +float_optional_exponent_part + float_exponent_part .or .true .emit '\0'; + +float_digit_sequence + digit_dec .emit * .and .loop digit_dec .emit * .and .true .emit '\0'; + +float_exponent_part + float_exponent_part_1 .or float_exponent_part_2; +float_exponent_part_1 + 'e' .and float_optional_sign .and float_digit_sequence; +float_exponent_part_2 + 'E' .and float_optional_sign .and float_digit_sequence; + +float_optional_sign + float_sign .or .true; + +float_sign + '+' .or '-' .emit '-'; + +integer + integer_hex .or integer_oct .or integer_dec; + +integer_hex + '0' .and integer_hex_1 .emit 0x10 .and digit_hex .emit * .and .loop digit_hex .emit * .and + .true .emit '\0'; +integer_hex_1 + 'x' .or 'X'; + +integer_oct + '0' .emit 8 .emit * .and .loop digit_oct .emit * .and .true .emit '\0'; + +integer_dec + digit_dec .emit 10 .emit * .and .loop digit_dec .emit * .and .true .emit '\0'; + +boolean + "true" .emit 2 .emit '1' .emit '\0' .or + "false" .emit 2 .emit '0' .emit '\0'; + +type_name + identifier; + +field_selection + identifier; + +floatconstant + float .emit OP_PUSH_FLOAT; + +intconstant + integer .emit OP_PUSH_INT; + +boolconstant + boolean .emit OP_PUSH_BOOL; + +optional_space + .loop single_space; + +space + single_space .and .loop single_space; + +single_space + white_char .or c_style_comment_block .or cpp_style_comment_block; + +white_char + ' ' .or '\t' .or new_line .or '\v' .or '\f'; + +new_line + cr_lf .or lf_cr .or '\n' .or '\r'; + +cr_lf + '\r' .and '\n'; + +lf_cr + '\n' .and '\r'; + +c_style_comment_block + '/' .and '*' .and c_style_comment_rest; + +c_style_comment_rest + .loop c_style_comment_char_no_star .and c_style_comment_rest_1; +c_style_comment_rest_1 + c_style_comment_end .or c_style_comment_rest_2; +c_style_comment_rest_2 + '*' .and c_style_comment_rest; + +c_style_comment_char_no_star + '\x2B'-'\xFF' .or '\x01'-'\x29'; + +c_style_comment_end + '*' .and '/'; + +cpp_style_comment_block + '/' .and '/' .and cpp_style_comment_block_1; +cpp_style_comment_block_1 + cpp_style_comment_block_2 .or cpp_style_comment_block_3; +cpp_style_comment_block_2 + .loop cpp_style_comment_char .and new_line; +cpp_style_comment_block_3 + .loop cpp_style_comment_char; + +cpp_style_comment_char + '\x0E'-'\xFF' .or '\x01'-'\x09' .or '\x0B'-'\x0C'; + +/* lexical rulez */ + +/*ampersand + optional_space .and '&' .and optional_space;*/ + +ampersandampersand + optional_space .and '&' .and '&' .and optional_space; + +/*ampersandequals + optional_space .and '&' .and '=' .and optional_space;*/ + +/*bar + optional_space .and '|' .and optional_space;*/ + +barbar + optional_space .and '|' .and '|' .and optional_space; + +/*barequals + optional_space .and '|' .and '=' .and optional_space;*/ + +bang + optional_space .and '!' .and optional_space; + +bangequals + optional_space .and '!' .and '=' .and optional_space; + +/*caret + optional_space .and '^' .and optional_space;*/ + +caretcaret + optional_space .and '^' .and '^' .and optional_space; + +/*caretequals + optional_space .and '^' .and '=' .and optional_space;*/ + +colon + optional_space .and ':' .and optional_space; + +comma + optional_space .and ',' .and optional_space; + +dot + optional_space .and '.' .and optional_space; + +equals + optional_space .and '=' .and optional_space; + +equalsequals + optional_space .and '=' .and '=' .and optional_space; + +greater + optional_space .and '>' .and optional_space; + +greaterequals + optional_space .and '>' .and '=' .and optional_space; + +/*greatergreater + optional_space .and '>' .and '>' .and optional_space;*/ + +/*greatergreaterequals + optional_space .and '>' .and '>' .and '=' .and optional_space;*/ + +lbrace + optional_space .and '{' .and optional_space; + +lbracket + optional_space .and '[' .and optional_space; + +less + optional_space .and '<' .and optional_space; + +lessequals + optional_space .and '<' .and '=' .and optional_space; + +/*lessless + optional_space .and '<' .and '<' .and optional_space;*/ + +/*lesslessequals + optional_space .and '<' .and '<' .and '=' .and optional_space;*/ + +lparen + optional_space .and '(' .and optional_space; + +minus + optional_space .and '-' .and optional_space; + +minusequals + optional_space .and '-' .and '=' .and optional_space; + +minusminus + optional_space .and '-' .and '-' .and optional_space; + +/*percent + optional_space .and '%' .and optional_space;*/ + +/*percentequals + optional_space .and '%' .and '=' .and optional_space;*/ + +plus + optional_space .and '+' .and optional_space; + +plusequals + optional_space .and '+' .and '=' .and optional_space; + +plusplus + optional_space .and '+' .and '+' .and optional_space; + +question + optional_space .and '?' .and optional_space; + +rbrace + optional_space .and '}' .and optional_space; + +rbracket + optional_space .and ']' .and optional_space; + +rparen + optional_space .and ')' .and optional_space; + +semicolon + optional_space .and ';' .and optional_space; + +slash + optional_space .and '/' .and optional_space; + +slashequals + optional_space .and '/' .and '=' .and optional_space; + +star + optional_space .and '*' .and optional_space; + +starequals + optional_space .and '*' .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 string_lexer; + +string_lexer + lex_first_identifier_character .and .loop lex_next_identifier_character; + +lex_first_identifier_character + 'a'-'z' .or 'A'-'Z' .or '_'; + +lex_next_identifier_character + 'a'-'z' .or 'A'-'Z' .or '0'-'9' .or '_'; + +/* error rulez - these are used by error messages */ + +err_token + '~' .or '`' .or '!' .or '@' .or '#' .or '$' .or '%' .or '^' .or '&' .or '*' .or '(' .or ')' .or + '-' .or '+' .or '=' .or '|' .or '\\' .or '[' .or ']' .or '{' .or '}' .or ':' .or ';' .or '"' .or + '\'' .or '<' .or ',' .or '>' .or '.' .or '/' .or '?' .or err_identifier; + +err_identifier + id_character_first .and .loop id_character_next; + |