GrammarFromStringLexer.h

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#pragma once
 
#include <ext/istream>
 
#include <alib/string>
 
#include <common/lexer.hpp>
 
namespace grammar {
 
class GrammarFromStringLexer : public ext::Lexer < GrammarFromStringLexer > {
public:
    enum class TokenType {
        SET_BEGIN,
        SET_END,
        COMMA,
        TUPLE_BEGIN,
        TUPLE_END,
        SEPARATOR,
        EPSILON,
        MAPS_TO,
        RIGHT_RG,
        LEFT_RG,
        RIGHT_LG,
        LEFT_LG,
        LG,
        CFG,
        EPSILON_FREE_CFG,
        GNF,
        CNF,
        CSG,
        NON_CONTRACTING_GRAMMAR,
        CONTEXT_PRESERVING_UNRESTRICTED_GRAMMAR,
        UNRESTRICTED_GRAMMAR,
        TEOF,
        ERROR,
    };
 
    static Token next(ext::istream& input);
};
 
} /* namepsace grammar */