examples/c++/calc++/driver.cc

/* 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/>.  */

#include "driver.hh"
#include "parser.hh"

driver::driver ()
  : trace_parsing (false), trace_scanning (false)
{
  variables["one"] = 1;
  variables["two"] = 2;
}

int
driver::parse (const std::string &f)
{
  file = f;
  location.initialize (&file);
  scan_begin ();
  yy::parser parse (*this);
  parse.set_debug_level (trace_parsing);
  int res = parse ();
  scan_end ();
  return res;
}