LeechCraft  0.6.70-13729-g7046a9d2a7
Modular cross-platform feature rich live environment.
newtype.h
Go to the documentation of this file.
1 /**********************************************************************
2  * LeechCraft - modular cross-platform feature rich internet client.
3  * Copyright (C) 2006-2014 Georg Rudoy
4  *
5  * Boost Software License - Version 1.0 - August 17th, 2003
6  *
7  * Permission is hereby granted, free of charge, to any person or organization
8  * obtaining a copy of the software and accompanying documentation covered by
9  * this license (the "Software") to use, reproduce, display, distribute,
10  * execute, and transmit the Software, and to prepare derivative works of the
11  * Software, and to permit third-parties to whom the Software is furnished to
12  * do so, all subject to the following:
13  *
14  * The copyright notices in the Software and this entire statement, including
15  * the above license grant, this restriction and the following disclaimer,
16  * must be included in all copies of the Software, in whole or in part, and
17  * all derivative works of the Software, unless such copies or derivative
18  * works are solely in the form of machine-executable object code generated by
19  * a source language processor.
20  *
21  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
22  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
23  * FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
24  * SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
25  * FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
26  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
27  * DEALINGS IN THE SOFTWARE.
28  **********************************************************************/
29 
30 #pragma once
31 
32 namespace LC
33 {
34 namespace Util
35 {
52  template<typename T, size_t, size_t>
53  class NewType : public T
54  {
55  public:
56  using T::T;
57 
58  NewType () = default;
59 
60  NewType (const T& t)
61  : T { t }
62  {
63  }
64  };
65 
66  namespace detail
67  {
68  constexpr size_t NewTypeHash (const char *str)
69  {
70  const auto basis = 14695981039346656037ULL;
71  const auto prime = 1099511628211ULL;
72  size_t hash = 0;
73  auto value = basis;
74  for (size_t i = 0; str [i]; ++i)
75  {
76  hash += value;
77  value = (value ^ str [i]) * prime;
78  }
79  return hash;
80  }
81  }
82 }
83 }
84 
85 #define NewTypeTag LC::Util::detail::NewTypeHash(__FILE__), __LINE__
constexpr size_t NewTypeHash(const char *str)
Definition: newtype.h:68
A somewhat "strong" typedef.
Definition: newtype.h:53
NewType(const T &t)
Definition: newtype.h:60
Definition: constants.h:35