/*

  This file is part of solidity.

  solidity 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.

  solidity 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 solidity.  If not, see <http://www.gnu.org/licenses/>.

*/

// SPDX-License-Identifier: GPL-3.0

#include <libsolutil/Exceptions.h>

using namespace std;

using namespace solidity::util;

char const* Exception::what() const noexcept

{

  // Return the comment if available.

  if (string const* cmt = comment())

    return cmt->data();

  // Fallback to base what().

  // Boost accepts nullptr, but the C++ standard doesn't

  // and crashes on some platforms.

  return std::exception::what();

}

string Exception::lineInfo() const

{

  char const* const* file = boost::get_error_info<boost::throw_file>(*this);

  int const* line = boost::get_error_info<boost::throw_line>(*this);

  string ret;

  if (file)

    ret += *file;

  ret += ':';

  if (line)

    ret += to_string(*line);

  return ret;

}

string const* Exception::comment() const noexcept

{

  return boost::get_error_info<errinfo_comment>(*this);

}