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LG.grm
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/*--- LRSTAR Lexical Grammar Syntax. ---*/
/*--- Terminal Symbols. ------*/
T_ERROR <error> => error (0);
T_ALPHA <alpha> => firstsym ({first_alpha});
T_LEXICAL <lexical> => firstsym ({first_lexical});
T_IGNORE <ignore> => firstsym ({first_ignore});
T_ESCAPE <escape> => firstsym ({first_escape});
T_LITERAL <literal> => firstsym ({first_literal});
T_STRING <string> => firstsym ({first_string});
T_INTEGER <integer> ;
T_EOF <eof> ;
T_ARROW '->' => arrow ();
T_RETURN '=>' ;
T_LEFTP '(' ;
T_RIGHTP ')' ;
T_PLUS '+' ;
T_STAR '*' ;
T_QUEST '?' ;
T_DOTS '..' ;
T_BAR '|' ;
T_DASH '-' ;
T_LCB '{' ;
T_RCB '}' ;
T_SEMI ';' ;
T_PERCENT '%%' ;
/*--- Nonterminal Symbols. ---*/
Goal -> Grammar <eof>
Grammar -> TokenProd...
-> TokenProd... PP
-> TokenProd... (NonterminalDef|SetDef|EscapeDef)...
-> TokenProd... PP (NonterminalDef|SetDef|EscapeDef)...
-> Options TokenProd...
-> Options TokenProd... PP
-> Options TokenProd... (NonterminalDef|SetDef|EscapeDef)...
-> Options TokenProd... PP (NonterminalDef|SetDef|EscapeDef)...
Options -> {first_string} => PRO_OPTNS(1)
/*--- Token Definitions ---*/
PP -> '%%' => EOGI(0)
TokenProd -> Token ReturnValue
-> Token ActionCode
Token -> {first_lexical} => ADD_TOKEN (1)
-> {first_literal} => ADD_TOKEN2 (1)
-> {first_string} => ADD_TOKEN2 (1)
ReturnValue -> <integer> => ADD_TERMNO (1)
-> <alpha> => ADD_DEFCON (1)
-> <string> => ADD_STRING (1)
ActionCode -> '{' => ADD_CODE (1)
/*--- Nonterminal Definitions ---*/
NonterminalDef -> AlphaSymbol ArrowProd... [';']
-> LexicalSymbol ArrowProd... [';']
-> IgnoreSymbol ArrowProd... [';']
-> AlphaSymbol ArrowProd BarProd... [';']
-> LexicalSymbol ArrowProd BarProd... [';']
-> IgnoreSymbol ArrowProd BarProd... [';']
AlphaSymbol -> {first_alpha} => ADD_HEAD(1)
LexicalSymbol -> {first_lexical} => ADD_HEADLEX(1)
IgnoreSymbol -> {first_ignore} => ADD_HEADIGNORE(1)
ArrowProd -> Arrow TailExprList
Arrow -> '->' => ADD_PROD()
BarProd -> Bar TailExprList
Bar -> '|' => ADD_PROD()
TailExprList -> TailExpr... => POP_ALL()
TailExpr -> TailSymbol
-> TailSymbol '+' => PUSH_PLUS()
-> TailSymbol '*' => PUSH_ASTER()
-> TailSymbol '?' => PUSH_QUEST()
-> GroupStart List GroupEnd
List -> TailExpr
-> List TailExpr
-> List Or TailExpr
Or -> '|' => PUSH_OR()
GroupStart -> '(' => PUSH_GBEG()
GroupEnd -> ')' => PUSH_GEND()
-> ')' '+' => PUSH_GPLUS()
-> ')' '*' => PUSH_GASTER()
-> ')' '?' => PUSH_GQUEST()
TailSymbol -> <alpha> => PUSH_TAIL (1)
-> <escape> => PUSH_TAIL (1)
-> <lexical> => PUSH_TAIL (1)
-> <literal> => PUSH_TAIL (1)
-> <string> => PUSH_TAIL (1)
-> <integer> => PUSH_TAIL (1)
/*--- Set Definitions ---*/
SetDef -> AlphaSymbol Arrow '{' SetExpr '}' => DEF_SET()
-> AlphaSymbol Arrow '{' SetExpr '}' ';' => DEF_SET()
SetExpr -> Range => FIRST_RANGE(1)
-> Character => FIRST_CHAR(1)
-> CharacterSetName => FIRST_SET(1)
-> SetExpr '|' Range => ADD_RANGE(3)
-> SetExpr '|' Character => ADD_CHAR(3)
-> SetExpr '|' CharacterSetName => ADD_SET(3)
-> SetExpr '-' Range => SUB_RANGE(3)
-> SetExpr '-' Character => SUB_CHAR(3)
-> SetExpr '-' CharacterSetName => SUB_SET(3)
Range -> RangeStart '..' RangeEnd
RangeEnd -> Character => RANGE_END(1)
RangeStart -> Character => RANGE_START(1)
Character -> <literal>
-> <string>
-> <integer>
CharacterSetName -> <alpha>
-> <escape>
/*--- Escape Definitions ---*/
EscapeDef -> EscapeSymbol Arrow Number
-> EscapeSymbol Arrow Number ';'
EscapeSymbol -> {first_escape} => ADD_HEADSET(1)
Number -> <integer> => FIRST_CHAR(1)
/*--- End of Grammar. ---*/