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lug — DSL с расширенным PEG для C++17

Форум — Development

После 6.5 лет забвения автор выпустил версию 0.2.0 header-only библиотеки lug.

using namespace lug::language;
		rule JSON;
		rule ExponentPart   = lexeme[ "[Ee]"_rx > ~"[+-]"_rx > +"[0-9]"_rx ];
		rule FractionalPart = lexeme[ "."_sx > +"[0-9]"_rx ];
		rule IntegralPart   = lexeme[ "0"_sx | "[1-9]"_rx > *"[0-9]"_rx ];
		rule Number         = lexeme[ ~"-"_sx > IntegralPart > ~FractionalPart > ~ExponentPart ];
		rule Boolean        = lexeme[ "true"_sx | "false" ];
		rule Null           = lexeme[ "null" ];
		rule UnicodeEscape  = lexeme[ 'u' > "[0-9A-Fa-f][0-9A-Fa-f][0-9A-Fa-f][0-9A-Fa-f]"_rx ];
		rule Escape         = lexeme[ "\\" > ("[/\\bfnrt]"_rx | UnicodeEscape) ];
		rule String         = lexeme[ "\"" > *("[^\"\\\u0000-\u001F]"_rx | Escape) > "\"" ];
		rule Array          = "[" > JSON > *("," > JSON) > "]";
		rule Object         = "{" > String > ":" > JSON > *("," > String > ":" > JSON) > "}";
		JSON                = Object | Array | String | Number | Boolean | Null;
		grammar_ = start(JSON);

https://github.com/jwtowner/lug

 , , , peg,

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