/* Driver for calc++.   -*- C++ -*-

   Copyright (C) 2005-2015, 2018-2021 Free Software Foundation, Inc.

   This file is part of Bison, the GNU Compiler Compiler.

   This program 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.

   This program 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 this program.  If not, see <https://www.gnu.org/licenses/>.  */

#ifndef DRIVER_HH
# define DRIVER_HH
# include <string>
# include <map>
# include "parser.hh"

// Give Flex the prototype of yylex we want ...
# define YY_DECL \
  yy::parser::symbol_type yylex (driver& drv)
// ... and declare it for the parser's sake.
YY_DECL;

// Conducting the whole scanning and parsing of Calc++.
class driver
{
public:
  driver ();

  std::map<std::string, int> variables;

  int result;

  // Run the parser on file F.  Return 0 on success.
  int parse (const std::string& f);
  // The name of the file being parsed.
  std::string file;
  // Whether to generate parser debug traces.
  bool trace_parsing;

  // Handling the scanner.
  void scan_begin ();
  void scan_end ();
  // Whether to generate scanner debug traces.
  bool trace_scanning;
  // The token's location used by the scanner.
  yy::location location;
};
#endif // ! DRIVER_HH