libcruft-util/stringid.cpp

63 lines
1.7 KiB
C++

/*
* This file is part of libgim.
*
* libgim 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.
*
* libgim 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 libgim. If not, see <http://www.gnu.org/licenses/>.
*
* Copyright 2014 Danny Robson <danny@nerdcruft.net>
*/
#include "stringid.hpp"
#include "raii.hpp"
#include <stdexcept>
#include <boost/thread/mutex.hpp>
#include <boost/thread/lock_guard.hpp>
using util::stringid;
//-----------------------------------------------------------------------------
stringid::id_t
stringid::add (const std::string key) {
auto pos = m_map.find (key);
if (pos != m_map.end ())
throw std::invalid_argument ("duplicate stringid key");
static boost::mutex s_lock;
boost::lock_guard<boost::mutex> raii (s_lock);
id_t id = m_map.size ();
m_map[key] = id;
return id;
}
//-----------------------------------------------------------------------------
stringid::id_t
stringid::find (const std::string &key) const {
auto pos = m_map.find (key);
if (pos == m_map.end ())
throw std::out_of_range ("invalid stringid key");
return pos->second;
}
//-----------------------------------------------------------------------------
void
stringid::clear (void) {
m_map.clear ();
}