/**
 * @file llnametable.h
 * @brief LLNameTable class is a table to associate pointers with string names
 *
 * $LicenseInfo:firstyear=2000&license=viewerlgpl$
 * Second Life Viewer Source Code
 * Copyright (C) 2010, Linden Research, Inc.
 *
 * This library 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;
 * version 2.1 of the License only.
 *
 * This library 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
 * Lesser 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, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 *
 * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
 * $/LicenseInfo$
 */

#ifndef LL_LLNAMETABLE_H
#define LL_LLNAMETABLE_H

#include <map>

#include "string_table.h"

template <class DATA>
class LLNameTable
{
public:
    LLNameTable()
    :   mNameMap()
    {
    }

    ~LLNameTable()
    {
    }

    void addEntry(const std::string& name, DATA data)
    {
        addEntry(name.c_str(), data);
    }

    void addEntry(const char *name, DATA data)
    {
        char *tablename = gStringTable.addString(name);
        mNameMap[tablename] = data;
    }

    bool checkName(const std::string& name) const
    {
        return checkName(name.c_str());
    }

    // "logically const" even though it modifies the global nametable
    bool checkName(const char *name) const
    {
        char *tablename = gStringTable.addString(name);
        return mNameMap.find(tablename) != mNameMap.end();
    }

    DATA resolveName(const std::string& name) const
    {
        return resolveName(name.c_str());
    }

    // "logically const" even though it modifies the global nametable
    DATA resolveName(const char *name) const
    {
        char *tablename = gStringTable.addString(name);
        const_iter_t iter = mNameMap.find(tablename);
        if (iter != mNameMap.end())
            return iter->second;
        else
            return 0;
    }

    // O(N)! (currently only used in one place... (newsim/llstate.cpp))
    const char *resolveData(const DATA &data) const
    {
        for (const name_map_t::value_type& pair : mNameMap)
        {
            if (pair.second == data)
                return pair.first;
        }
        return NULL;
    }

    typedef std::map<const char *, DATA> name_map_t;
    typedef typename std::map<const char *,DATA>::iterator iter_t;
    typedef typename std::map<const char *,DATA>::const_iterator const_iter_t;
    name_map_t      mNameMap;
};

#endif