/* Software License Agreement
 * 
 *     Copyright(C) 1994-2021 David Lindauer, (LADSoft)
 * 
 *     This file is part of the Orange C Compiler package.
 * 
 *     The Orange C Compiler package is free software: you can redistribute it and/or modify
 *     it under the terms of the GNU General Public License as published by
 *     the Free Software Foundation, either version 3 of the License, or
 *     (at your option) any later version.
 * 
 *     The Orange C Compiler package is distributed in the hope that it will be useful,
 *     but WITHOUT ANY WARRANTY; without even the implied warranty of
 *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *     GNU General Public License for more details.
 * 
 *     You should have received a copy of the GNU General Public License
 *     along with Orange C.  If not, see <http://www.gnu.org/licenses/>.
 * 
 *     contact information:
 *         email: TouchStone222@runbox.com <David Lindauer>
 * 
 */

#ifndef Lexer_h
#define Lexer_h

#include "Token.h"
#include "rckw.h"

class PreProcessor;

class Lexer
{
  public:
    Lexer(PreProcessor& PP) : pp(PP), atEol(false), atEof(false), tokenizer(nullptr), token(nullptr)
    {
        InitTokenizer();
        NextToken();
    }
    ~Lexer() {}

    std::string GetRestOfLine();
    const Token* GetToken() { return token; }
    void NextToken();
    void Reset(const std::string& line)
    {
        tokenizer->Reset(line);
        NextToken();
    }
    bool AtEol() { return atEol; }
    bool AtEof() { return atEof; }

  protected:
    void InitTokenizer();

  private:
    PreProcessor& pp;
    bool atEol;
    bool atEof;
    Tokenizer* tokenizer;
    const Token* token;
    static KeywordHash hash;
};
#endif  // Lexer_h