diff options
Diffstat (limited to 'third_party/template_util.h')
-rw-r--r-- | third_party/template_util.h | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/third_party/template_util.h b/third_party/template_util.h new file mode 100644 index 0000000000..d4508dd696 --- /dev/null +++ b/third_party/template_util.h @@ -0,0 +1,33 @@ +// Copyright (c) 2011 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#ifndef BASE_TEMPLATE_UTIL_H_ +#define BASE_TEMPLATE_UTIL_H_ + +#include <cstddef> // For size_t. + +namespace base { + +template<class T, T v> +struct integral_constant { + static const T value = v; + typedef T value_type; + typedef integral_constant<T, v> type; +}; + +typedef integral_constant<bool, true> true_type; +typedef integral_constant<bool, false> false_type; + +template <class T, class U> struct is_same : public false_type {}; +template <class T> struct is_same<T,T> : true_type {}; + +template<bool B, class T = void> +struct enable_if {}; + +template<class T> +struct enable_if<true, T> { typedef T type; }; + +} // namespace base + +#endif // BASE_TEMPLATE_UTIL_H_ |