text: //
  // Copyright (c) 2008-2014 the Urho3D project.
  //
  // Permission is hereby granted, free of charge, to any person obtaining a copy
  // of this software and associated documentation files (the "Software"), to deal
  // in the Software without restriction, including without limitation the rights
  // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  // copies of the Software, and to permit persons to whom the Software is
  // furnished to do so, subject to the following conditions:
  //
  // The above copyright notice and this permission notice shall be included in
  // all copies or substantial portions of the Software.
  //
  // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  // THE SOFTWARE.
  //
  
  #pragma once
  
  #include <cstddef>
  
  namespace Urho3D
  {
  
  /// Pointer hash function.
  template <class T> unsigned MakeHash(T* value)
  {
      return ((unsigned)(size_t)value) / sizeof(T);
  }
  
  /// Const pointer hash function.
  template <class T> unsigned MakeHash(const T* value)
  {
      return ((unsigned)(size_t)value) / sizeof(T);
  }
  
  /// Generic hash function.
  template <class T> unsigned MakeHash(const T& value)
  {
      return value.ToHash();
  }
  
  /// Void pointer hash function.
  template<> inline unsigned MakeHash(void* value)
  {
      return (unsigned)(size_t)value;
  }
  
  /// Const void pointer hash function.
  template<> inline unsigned MakeHash(const void* value)
  {
      return (unsigned)(size_t)value;
  }
  
  /// Long long hash function.
  template<> inline unsigned MakeHash(const long long& value)
  {
      return (value >> 32) | (value & 0xffffffff);
  }
  
  /// Unsigned long long hash function.
  template<> inline unsigned MakeHash(const unsigned long long& value)
  {
      return (value >> 32) | (value & 0xffffffff);
  }
  
  /// Int hash function.
  template<> inline unsigned MakeHash(const int& value)
  {
      return value;
  }
  
  /// Unsigned hash function.
  template<> inline unsigned MakeHash(const unsigned& value)
  {
      return value;
  }
  
  /// Short hash function.
  template<> inline unsigned MakeHash(const short& value)
  {
      return value;
  }
  
  /// Unsigned short hash function.
  template<> inline unsigned MakeHash(const unsigned short& value)
  {
      return value;
  }
  
  /// Char hash function.
  template<> inline unsigned MakeHash(const char& value)
  {
      return value;
  }
  
  /// Unsigned char hash function.
  template<> inline unsigned MakeHash(const unsigned char& value)
  {
      return value;
  }
  
  }
  