Location.h

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/*
* Nirvana IDL front-end library.
*
* This is a part of the Nirvana project.
*
* Author: Igor Popov
*
* Copyright (c) 2021 Igor Popov.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser 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 Lesser General Public
* License along with this library.  If not, see <http://www.gnu.org/licenses/>.
*
* Send comments and/or bug reports to:
*  popov.nirvana@gmail.com
*/
#ifndef IDLFE_AST_LOCATION_H_
#define IDLFE_AST_LOCATION_H_
#pragma once
 
#include <filesystem>
#include <assert.h>
 
// Support for the Bison location.
namespace yy {
class location;
}
 
namespace AST {
 
class Location
{
public:
    const std::filesystem::path& file () const noexcept
    {
        assert (file_);
        return *file_;
    }
 
    unsigned line () const noexcept
    {
        return line_;
    }
 
    Location () noexcept :
        file_ (nullptr),
        line_ (0)
    {}
 
    Location (const std::filesystem::path* file, unsigned line) noexcept :
        file_ (file),
        line_ (line)
    {}
 
    Location (const yy::location&) noexcept;
 
    operator bool () const noexcept
    {
        return file_ != nullptr;
    }
 
private:
    const std::filesystem::path* file_;
    unsigned line_;
};
 
}
 
#endif