Teuchos_Language.hpp

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// @HEADER
// *****************************************************************************
//                    Teuchos: Common Tools Package
//
// Copyright 2004 NTESS and the Teuchos contributors.
// SPDX-License-Identifier: BSD-3-Clause
// *****************************************************************************
// @HEADER

#ifndef TEUCHOS_LANGUAGE_HPP
#define TEUCHOS_LANGUAGE_HPP

#include <string>
#include <vector>
#include <iosfwd>

#include <Teuchos_Grammar.hpp>
#include <Teuchos_FiniteAutomaton.hpp>
#include <Teuchos_ReaderTables.hpp>
#include <Teuchos_RCP.hpp>

namespace Teuchos {


struct Language {
  struct Token {
    std::string name;
    std::string regex;
    void operator()(std::string const& name_in, std::string const& regex_in);
  };
  typedef std::vector<Token> Tokens;
  Tokens tokens;
  typedef std::vector<std::string> RHS;
  struct Production;
  struct RHSBuilder {
    Production& prod;
    RHSBuilder(Production& prod_in);
    RHSBuilder& operator,(std::string const& rhs_item);
    RHSBuilder& operator>>(std::string const& rhs_item);
  };
  struct Production {
    std::string lhs;
    RHS rhs;
    RHSBuilder operator()(std::string const& lhs_in);
  };
  typedef std::vector<Production> Productions;
  Productions productions;
};

typedef RCP<const Language> LanguagePtr;

GrammarPtr make_grammar(Language const& language);

void make_lexer(FiniteAutomaton& result, Language const& language);


ReaderTablesPtr make_reader_tables(Language const& language);

std::ostream& operator<<(std::ostream& os, Language const& lang);

}

#endif