RegExpFromStringLexer.h

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#pragma once
 
#include <ext/istream>
 
#include <alib/string>
 
#include <common/lexer.hpp>
 
namespace regexp {
 
class RegExpFromStringLexer : public ext::Lexer < RegExpFromStringLexer > {
public:
    enum class TokenType {
        LPAR,
        RPAR,
        PLUS,
        STAR,
        EPS,
        EMPTY,
        TEOF,
        ERROR
    };
 
    static Token next(ext::istream& input);
};
 
} /* namespace regexp */