File: getiface.cpp

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xplc 0.3.13-12.1
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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
 *
 * XPLC - Cross-Platform Lightweight Components
 * Copyright (C) 2002, Pierre Phaneuf
 *
 * 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; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307
 * USA
 *
 * As a special exception, you may use this file as part of a free
 * software library without restriction.  Specifically, if other files
 * instantiate templates or use macros or inline functions from this
 * file, or you compile this file and link it with other files to
 * produce an executable, this file does not by itself cause the
 * resulting executable to be covered by the GNU Lesser General Public
 * License.  This exception does not however invalidate any other
 * reasons why the executable file might be covered by the GNU Lesser
 * General Public License.
 */

#include <xplc/utils.h>
#include <xplc/uuidops.h>

UUID_MAP_BEGIN(WeakRef)
  UUID_MAP_ENTRY(IObject)
  UUID_MAP_ENTRY(IWeakRef)
  UUID_MAP_END

IObject* IObjectImplInternal::getInterface(void* self,
                                           const UUID& uuid,
                                           const UUID_Info* uuidlist) {
  IObject* rv;

  while(uuidlist->iid) {
    if(*(uuidlist->iid) == uuid) {
      rv = reinterpret_cast<IObject*>
        (reinterpret_cast<ptrdiff_t>(self) + uuidlist->delta);
      rv->addRef();
      return rv;
    }
    uuidlist++;
  }

  return 0;
}