michael@0: /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0: /* vim: set ts=8 sts=2 et sw=2 tw=80: */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: /* Compatibility with std::numeric_limits<char16_t>. */
michael@0: 
michael@0: #ifndef mozilla_NumericLimits_h
michael@0: #define mozilla_NumericLimits_h
michael@0: 
michael@0: #include "mozilla/Char16.h"
michael@0: 
michael@0: #include <limits>
michael@0: #include <stdint.h>
michael@0: 
michael@0: namespace mozilla {
michael@0: 
michael@0: /**
michael@0:  * The NumericLimits class provides a compatibility layer with std::numeric_limits
michael@0:  * for char16_t, otherwise it is exactly the same as std::numeric_limits.
michael@0:  * Code which does not need std::numeric_limits<char16_t> should avoid using
michael@0:  * NumericLimits.
michael@0:  */
michael@0: template<typename T>
michael@0: class NumericLimits : public std::numeric_limits<T>
michael@0: {
michael@0: };
michael@0: 
michael@0: #ifdef MOZ_CHAR16_IS_NOT_WCHAR
michael@0: template<>
michael@0: class NumericLimits<char16_t> : public std::numeric_limits<uint16_t>
michael@0: {
michael@0:   // char16_t and uint16_t numeric limits should be exactly the same.
michael@0: };
michael@0: #endif
michael@0: 
michael@0: } // namespace mozilla
michael@0: 
michael@0: #endif /* mozilla_NumericLimits_h */