/* Prototype Lexis for Nutmeg - developed with the help of https://bottlecaps.de/rr/ui */

Identifier ::= [_a-zA-Z] [_a-zA-Z0-9]*

DecimalNumber ::=
    [-+]? '_'* DecimalDigit DecimalDigitPlus* ( '.' DecimalDigitPlus* )? ( e [-+]? '_'* DecimalDigit DecimalDigitPlus* )?

HexNumber ::=
    [-+]? '0x' '_'* HexDigit HexDigitPlus* ( '.' HexDigitPlus* )? 
    
BinaryNumber ::=
    [-+]? '0b' '_'* BinaryDigit BinaryDigitPlus* ( '.' BinaryDigitplus* )? 
    
RadixNumber ::=
    [-+]? ([2-9]|[12][0-9]|[3][0-6]) 'r' '_'* RadixDigit RadixDigitPlus* ( '.' RadixDigitPlus* )? 

Character ::=
    '`' BackQuotedCharacter '`'

BackQuotedCharacter ::= QuotedCharacter - '`'

String ::=
    '"' DoubleQuotedCharacter* '"' |
    "'" SingleQuotedCharacter* "'"

DoubleQuotedCharacter ::= QuotedCharacter - '"'

SingleQuotedCharacter ::= QuotedCharacter - "'"

QuotedCharacter ::=
    PrintableCharacter |
    '\' ( '"' | "'" | 'n' | 'r' | 's' | 't' | 'v' | 'u' [0-9A-F][0-9A-F][0-9A-F][0-9A-F] ) |
    '\&' HTMLEntity ';'

PrintableCharacter ::= 

HTMLEntity ::= [A-Za-z]+

DecimalDigit ::= [0-9]
DecimalDigitPlus ::= [_] | DecimalDigit

HexDigit ::= [0-9A-F]
HexDigitPlus ::= [_] | HexDigit

BinaryDigit ::= [01]
BinaryDigitPlus ::= [_] | BinaryDigit

RadixDigit ::= [0-9A-Z]
RadixDigitPlus ::= [_] | RadixDigit

LowerCase ::= [https://www.compart.com/en/unicode/category/Ll] 

UpperCase ::= [https://www.compart.com/en/unicode/category/Lu]