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<div class="title">type_utils.hpp</div> </div>
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<a href="a01092.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">// -*- C++ -*-</span>
<a name="l00002"></a>00002
<a name="l00003"></a>00003 <span class="comment">// Copyright (C) 2005, 2006, 2007, 2009, 2010 Free Software Foundation, Inc.</span>
<a name="l00004"></a>00004 <span class="comment">//</span>
<a name="l00005"></a>00005 <span class="comment">// This file is part of the GNU ISO C++ Library. This library is free</span>
<a name="l00006"></a>00006 <span class="comment">// software; you can redistribute it and/or modify it under the terms</span>
<a name="l00007"></a>00007 <span class="comment">// of the GNU General Public License as published by the Free Software</span>
<a name="l00008"></a>00008 <span class="comment">// Foundation; either version 3, or (at your option) any later</span>
<a name="l00009"></a>00009 <span class="comment">// version.</span>
<a name="l00010"></a>00010
<a name="l00011"></a>00011 <span class="comment">// This library is distributed in the hope that it will be useful, but</span>
<a name="l00012"></a>00012 <span class="comment">// WITHOUT ANY WARRANTY; without even the implied warranty of</span>
<a name="l00013"></a>00013 <span class="comment">// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU</span>
<a name="l00014"></a>00014 <span class="comment">// General Public License for more details.</span>
<a name="l00015"></a>00015
<a name="l00016"></a>00016 <span class="comment">// Under Section 7 of GPL version 3, you are granted additional</span>
<a name="l00017"></a>00017 <span class="comment">// permissions described in the GCC Runtime Library Exception, version</span>
<a name="l00018"></a>00018 <span class="comment">// 3.1, as published by the Free Software Foundation.</span>
<a name="l00019"></a>00019
<a name="l00020"></a>00020 <span class="comment">// You should have received a copy of the GNU General Public License and</span>
<a name="l00021"></a>00021 <span class="comment">// a copy of the GCC Runtime Library Exception along with this program;</span>
<a name="l00022"></a>00022 <span class="comment">// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see</span>
<a name="l00023"></a>00023 <span class="comment">// <http://www.gnu.org/licenses/>.</span>
<a name="l00024"></a>00024
<a name="l00025"></a>00025 <span class="comment">// Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.</span>
<a name="l00026"></a>00026
<a name="l00027"></a>00027 <span class="comment">// Permission to use, copy, modify, sell, and distribute this software</span>
<a name="l00028"></a>00028 <span class="comment">// is hereby granted without fee, provided that the above copyright</span>
<a name="l00029"></a>00029 <span class="comment">// notice appears in all copies, and that both that copyright notice</span>
<a name="l00030"></a>00030 <span class="comment">// and this permission notice appear in supporting documentation. None</span>
<a name="l00031"></a>00031 <span class="comment">// of the above authors, nor IBM Haifa Research Laboratories, make any</span>
<a name="l00032"></a>00032 <span class="comment">// representation about the suitability of this software for any</span>
<a name="l00033"></a>00033 <span class="comment">// purpose. It is provided "as is" without express or implied</span>
<a name="l00034"></a>00034 <span class="comment">// warranty.</span>
<a name="l00035"></a>00035 <span class="comment"></span>
<a name="l00036"></a>00036 <span class="comment">/**</span>
<a name="l00037"></a>00037 <span class="comment"> * @file type_utils.hpp</span>
<a name="l00038"></a>00038 <span class="comment"> * Contains utilities for handnling types. All of these classes are based on</span>
<a name="l00039"></a>00039 <span class="comment"> * Modern C++ by Andrei Alxandrescu.</span>
<a name="l00040"></a>00040 <span class="comment"> */</span>
<a name="l00041"></a>00041
<a name="l00042"></a>00042 <span class="preprocessor">#ifndef PB_DS_TYPE_UTILS_HPP</span>
<a name="l00043"></a>00043 <span class="preprocessor"></span><span class="preprocessor">#define PB_DS_TYPE_UTILS_HPP</span>
<a name="l00044"></a>00044 <span class="preprocessor"></span>
<a name="l00045"></a>00045 <span class="preprocessor">#include <<a class="code" href="a00829.html">cstddef</a>></span>
<a name="l00046"></a>00046 <span class="preprocessor">#include <<a class="code" href="a01108.html">utility</a>></span>
<a name="l00047"></a>00047 <span class="preprocessor">#include <tr1/type_traits></span>
<a name="l00048"></a>00048 <span class="preprocessor">#include <<a class="code" href="a01091.html">ext/type_traits.h</a>></span>
<a name="l00049"></a>00049 <span class="preprocessor">#include <<a class="code" href="a00962.html">ext/numeric_traits.h</a>></span>
<a name="l00050"></a>00050
<a name="l00051"></a>00051 <span class="keyword">namespace </span>__gnu_pbds
<a name="l00052"></a>00052 {
<a name="l00053"></a>00053 <span class="keyword">namespace </span>detail
<a name="l00054"></a>00054 {
<a name="l00055"></a>00055 <span class="keyword">using</span> std::tr1::is_same;
<a name="l00056"></a>00056 <span class="keyword">using</span> std::tr1::is_const;
<a name="l00057"></a>00057 <span class="keyword">using</span> std::tr1::is_pointer;
<a name="l00058"></a>00058 <span class="keyword">using</span> std::tr1::is_reference;
<a name="l00059"></a>00059 <span class="keyword">using</span> std::tr1::is_fundamental;
<a name="l00060"></a>00060 <span class="keyword">using</span> std::tr1::is_member_object_pointer;
<a name="l00061"></a>00061 <span class="keyword">using</span> std::tr1::is_member_pointer;
<a name="l00062"></a>00062 <span class="keyword">using</span> std::tr1::is_base_of;
<a name="l00063"></a>00063 <span class="keyword">using</span> std::tr1::remove_const;
<a name="l00064"></a>00064 <span class="keyword">using</span> std::tr1::remove_reference;
<a name="l00065"></a>00065
<a name="l00066"></a>00066 <span class="comment">// Need integral_const<bool, true> <-> integral_const<int, 1>, so</span>
<a name="l00067"></a>00067 <span class="comment">// because of this use the following typedefs instead of importing</span>
<a name="l00068"></a>00068 <span class="comment">// std::tr1's.</span>
<a name="l00069"></a>00069 <span class="keyword">using</span> std::tr1::integral_constant;
<a name="l00070"></a>00070 <span class="keyword">typedef</span> std::tr1::integral_constant<int, 1> <a class="code" href="a01205.html#ga6a860513044e23d34e553ea986e83fa1" title="typedef for true_type">true_type</a>;
<a name="l00071"></a>00071 <span class="keyword">typedef</span> std::tr1::integral_constant<int, 0> <a class="code" href="a01205.html#gaebe6729ab5488ecc76c762873d226857" title="typedef for false_type">false_type</a>;
<a name="l00072"></a>00072
<a name="l00073"></a>00073 <span class="keyword">using</span> __gnu_cxx::__conditional_type;
<a name="l00074"></a>00074 <span class="keyword">using</span> __gnu_cxx::__numeric_traits;
<a name="l00075"></a>00075
<a name="l00076"></a>00076 <span class="keyword">template</span><<span class="keyword">typename</span> T>
<a name="l00077"></a>00077 <span class="keyword">struct </span>is_const_pointer
<a name="l00078"></a>00078 {
<a name="l00079"></a>00079 <span class="keyword">enum</span>
<a name="l00080"></a>00080 {
<a name="l00081"></a>00081 value = is_const<T>::value && is_pointer<T>::value
<a name="l00082"></a>00082 };
<a name="l00083"></a>00083 };
<a name="l00084"></a>00084
<a name="l00085"></a>00085 <span class="keyword">template</span><<span class="keyword">typename</span> T>
<a name="l00086"></a>00086 <span class="keyword">struct </span>is_const_reference
<a name="l00087"></a>00087 {
<a name="l00088"></a>00088 <span class="keyword">enum</span>
<a name="l00089"></a>00089 {
<a name="l00090"></a>00090 value = is_const<T>::value && is_reference<T>::value
<a name="l00091"></a>00091 };
<a name="l00092"></a>00092 };
<a name="l00093"></a>00093
<a name="l00094"></a>00094 <span class="keyword">template</span><<span class="keyword">typename</span> T>
<a name="l00095"></a>00095 <span class="keyword">struct </span>is_simple
<a name="l00096"></a>00096 {
<a name="l00097"></a>00097 <span class="keyword">enum</span>
<a name="l00098"></a>00098 {
<a name="l00099"></a>00099 value = is_fundamental<typename remove_const<T>::type>::value
<a name="l00100"></a>00100 || is_pointer<typename remove_const<T>::type>::value
<a name="l00101"></a>00101 || is_member_pointer<T>::value
<a name="l00102"></a>00102 };
<a name="l00103"></a>00103 };
<a name="l00104"></a>00104
<a name="l00105"></a>00105 <span class="keyword">template</span><<span class="keyword">typename</span> T>
<a name="l00106"></a>00106 <span class="keyword">class </span>is_pair
<a name="l00107"></a>00107 {
<a name="l00108"></a>00108 <span class="keyword">private</span>:
<a name="l00109"></a>00109 <span class="keyword">template</span><<span class="keyword">typename</span> U>
<a name="l00110"></a>00110 <span class="keyword">struct </span>is_pair_imp
<a name="l00111"></a>00111 {
<a name="l00112"></a>00112 <span class="keyword">enum</span>
<a name="l00113"></a>00113 {
<a name="l00114"></a>00114 value = 0
<a name="l00115"></a>00115 };
<a name="l00116"></a>00116 };
<a name="l00117"></a>00117
<a name="l00118"></a>00118 <span class="keyword">template</span><<span class="keyword">typename</span> U, <span class="keyword">typename</span> V>
<a name="l00119"></a>00119 <span class="keyword">struct </span>is_pair_imp<std::pair<U,V> >
<a name="l00120"></a>00120 {
<a name="l00121"></a>00121 <span class="keyword">enum</span>
<a name="l00122"></a>00122 {
<a name="l00123"></a>00123 value = 1
<a name="l00124"></a>00124 };
<a name="l00125"></a>00125 };
<a name="l00126"></a>00126
<a name="l00127"></a>00127 <span class="keyword">public</span>:
<a name="l00128"></a>00128 <span class="keyword">enum</span>
<a name="l00129"></a>00129 {
<a name="l00130"></a>00130 value = is_pair_imp<T>::value
<a name="l00131"></a>00131 };
<a name="l00132"></a>00132 };
<a name="l00133"></a>00133
<a name="l00134"></a>00134 <span class="comment">// Use C++0x's static_assert if possible.</span>
<a name="l00135"></a>00135 <span class="preprocessor">#ifdef __GXX_EXPERIMENTAL_CXX0X__</span>
<a name="l00136"></a>00136 <span class="preprocessor"></span><span class="preprocessor">#define PB_DS_STATIC_ASSERT(UNIQUE, E) static_assert(E, #UNIQUE)</span>
<a name="l00137"></a>00137 <span class="preprocessor"></span><span class="preprocessor">#else</span>
<a name="l00138"></a>00138 <span class="preprocessor"></span> <span class="keyword">template</span><<span class="keywordtype">bool</span>>
<a name="l00139"></a>00139 <span class="keyword">struct </span>__static_assert;
<a name="l00140"></a>00140
<a name="l00141"></a>00141 <span class="keyword">template</span><>
<a name="l00142"></a>00142 <span class="keyword">struct </span>__static_assert<true>
<a name="l00143"></a>00143 { };
<a name="l00144"></a>00144
<a name="l00145"></a>00145 <span class="keyword">template</span><<span class="keywordtype">int</span>>
<a name="l00146"></a>00146 <span class="keyword">struct </span>__static_assert_dumclass
<a name="l00147"></a>00147 {
<a name="l00148"></a>00148 <span class="keyword">enum</span>
<a name="l00149"></a>00149 {
<a name="l00150"></a>00150 v = 1
<a name="l00151"></a>00151 };
<a name="l00152"></a>00152 };
<a name="l00153"></a>00153
<a name="l00154"></a>00154 <span class="preprocessor">#define PB_DS_STATIC_ASSERT(UNIQUE, E) \</span>
<a name="l00155"></a>00155 <span class="preprocessor"> typedef __gnu_pbds::detail::__static_assert_dumclass<sizeof(__gnu_pbds::detail::__static_assert<bool(E)>)> UNIQUE##__static_assert_type</span>
<a name="l00156"></a>00156 <span class="preprocessor"></span>
<a name="l00157"></a>00157 <span class="preprocessor">#endif</span>
<a name="l00158"></a>00158 <span class="preprocessor"></span>
<a name="l00159"></a>00159 <span class="keyword">template</span><<span class="keyword">typename</span> Type>
<a name="l00160"></a>00160 <span class="keyword">struct </span>type_to_type
<a name="l00161"></a>00161 {
<a name="l00162"></a>00162 <span class="keyword">typedef</span> Type type;
<a name="l00163"></a>00163 };
<a name="l00164"></a>00164 } <span class="comment">// namespace detail</span>
<a name="l00165"></a>00165 } <span class="comment">// namespace __gnu_pbds</span>
<a name="l00166"></a>00166
<a name="l00167"></a>00167 <span class="preprocessor">#endif </span>
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