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<h1>csutil/typetraits.h</h1><a href="typetraits_8h.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*</span>
<a name="l00002"></a>00002 <span class="comment"> Copyright (C) 2006 by Marten Svanfeldt</span>
<a name="l00003"></a>00003 <span class="comment"></span>
<a name="l00004"></a>00004 <span class="comment"> This library is free software; you can redistribute it and/or</span>
<a name="l00005"></a>00005 <span class="comment"> modify it under the terms of the GNU Library General Public</span>
<a name="l00006"></a>00006 <span class="comment"> License as published by the Free Software Foundation; either</span>
<a name="l00007"></a>00007 <span class="comment"> version 2 of the License, or (at your option) any later version.</span>
<a name="l00008"></a>00008 <span class="comment"></span>
<a name="l00009"></a>00009 <span class="comment"> This library is distributed in the hope that it will be useful,</span>
<a name="l00010"></a>00010 <span class="comment"> but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
<a name="l00011"></a>00011 <span class="comment"> MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU</span>
<a name="l00012"></a>00012 <span class="comment"> Library General Public License for more details.</span>
<a name="l00013"></a>00013 <span class="comment"></span>
<a name="l00014"></a>00014 <span class="comment"> You should have received a copy of the GNU Library General Public</span>
<a name="l00015"></a>00015 <span class="comment"> License along with this library; if not, write to the Free</span>
<a name="l00016"></a>00016 <span class="comment"> Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.</span>
<a name="l00017"></a>00017 <span class="comment">*/</span>
<a name="l00018"></a>00018
<a name="l00019"></a>00019 <span class="preprocessor">#ifndef __CSUTIL_TYPETRAITS_H__</span>
<a name="l00020"></a>00020 <span class="preprocessor"></span><span class="preprocessor">#define __CSUTIL_TYPETRAITS_H__</span>
<a name="l00021"></a>00021 <span class="preprocessor"></span>
<a name="l00027"></a>00027 <span class="keyword">namespace </span>CS
<a name="l00028"></a>00028 {
<a name="l00029"></a><a class="code" href="namespaceCS_1_1Meta.html">00029</a> <span class="keyword">namespace </span>Meta
<a name="l00030"></a>00030 {
<a name="l00031"></a><a class="code" href="namespaceCS_1_1Meta_1_1Implementation.html">00031</a> <span class="keyword">namespace </span>Implementation
<a name="l00032"></a>00032 {
<a name="l00033"></a>00033 <span class="comment">// Types for checking yes/no</span>
<a name="l00034"></a>00034
<a name="l00036"></a><a class="code" href="namespaceCS_1_1Meta_1_1Implementation.html#c7a64468fc69e8e1ad5a639fcfb3462e">00036</a> <span class="keyword">typedef</span> <span class="keywordtype">char</span> <a class="code" href="namespaceCS_1_1Meta_1_1Implementation.html#c7a64468fc69e8e1ad5a639fcfb3462e" title="Boolean true type.">YesType</a>;
<a name="l00037"></a>00037
<a name="l00039"></a><a class="code" href="structCS_1_1Meta_1_1Implementation_1_1NoType.html">00039</a> <span class="keyword">struct </span><a class="code" href="structCS_1_1Meta_1_1Implementation_1_1NoType.html" title="Boolean false type.">NoType</a>
<a name="l00040"></a>00040 {
<a name="l00041"></a><a class="code" href="structCS_1_1Meta_1_1Implementation_1_1NoType.html#c48b76e58abd53adddc3093dc27515a2">00041</a> <span class="keywordtype">char</span> <a class="code" href="structCS_1_1Meta_1_1Implementation_1_1NoType.html#c48b76e58abd53adddc3093dc27515a2">padding</a>[8];
<a name="l00042"></a>00042 };
<a name="l00043"></a>00043
<a name="l00045"></a>00045 <span class="keyword">template</span> <<span class="keyword">class</span> T>
<a name="l00046"></a><a class="code" href="structCS_1_1Meta_1_1Implementation_1_1Wrap.html#446131b758743e3c33f4f5d368d181c2">00046</a> <span class="keyword">struct </span><a class="code" href="structCS_1_1Meta_1_1Implementation_1_1Wrap.html" title="Simple dummy-wrapper.">Wrap</a> { <a class="code" href="structCS_1_1Meta_1_1Implementation_1_1Wrap.html#446131b758743e3c33f4f5d368d181c2">Wrap</a> () {} };
<a name="l00047"></a>00047
<a name="l00048"></a><a class="code" href="namespaceCS_1_1Meta_1_1Implementation.html#0ae4ea38e88c9f6ef889bd7df0b22907">00048</a> <span class="keyword">template</span> <<span class="keyword">class</span> T> T&(* <a class="code" href="namespaceCS_1_1Meta_1_1Implementation.html#0ae4ea38e88c9f6ef889bd7df0b22907">IsReferenceHelper1</a>(<a class="code" href="structCS_1_1Meta_1_1Implementation_1_1Wrap.html" title="Simple dummy-wrapper.">Wrap<T></a>) )(<a class="code" href="structCS_1_1Meta_1_1Implementation_1_1Wrap.html" title="Simple dummy-wrapper.">Wrap<T></a>);
<a name="l00049"></a>00049 <span class="keywordtype">char</span> <a class="code" href="namespaceCS_1_1Meta_1_1Implementation.html#0ae4ea38e88c9f6ef889bd7df0b22907">IsReferenceHelper1</a>(...);
<a name="l00050"></a>00050
<a name="l00051"></a>00051 <span class="keyword">template</span> <<span class="keyword">class</span> T> <a class="code" href="structCS_1_1Meta_1_1Implementation_1_1NoType.html" title="Boolean false type.">NoType</a> IsReferenceHelper2(T&(*)(<a class="code" href="structCS_1_1Meta_1_1Implementation_1_1Wrap.html" title="Simple dummy-wrapper.">Wrap<T></a>));
<a name="l00052"></a>00052 <a class="code" href="namespaceCS_1_1Meta_1_1Implementation.html#c7a64468fc69e8e1ad5a639fcfb3462e" title="Boolean true type.">YesType</a> IsReferenceHelper2(...);
<a name="l00053"></a>00053
<a name="l00054"></a>00054 <span class="keyword">template</span> <<span class="keyword">class</span> T>
<a name="l00055"></a><a class="code" href="structCS_1_1Meta_1_1Implementation_1_1IsReferenceImpl.html">00055</a> <span class="keyword">struct </span><a class="code" href="structCS_1_1Meta_1_1Implementation_1_1IsReferenceImpl.html">IsReferenceImpl</a>
<a name="l00056"></a>00056 {
<a name="l00057"></a><a class="code" href="structCS_1_1Meta_1_1Implementation_1_1IsReferenceImpl.html#87dd0cf404d2e2f0925794585f95e974">00057</a> <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">bool</span> <a class="code" href="structCS_1_1Meta_1_1Implementation_1_1IsReferenceImpl.html#87dd0cf404d2e2f0925794585f95e974">value</a> = <span class="keyword">sizeof</span>(IsReferenceHelper2 (
<a name="l00058"></a>00058 <a class="code" href="namespaceCS_1_1Meta_1_1Implementation.html#0ae4ea38e88c9f6ef889bd7df0b22907">IsReferenceHelper1</a> (<a class="code" href="structCS_1_1Meta_1_1Implementation_1_1Wrap.html" title="Simple dummy-wrapper.">Wrap<T></a>()))) == 1;
<a name="l00059"></a>00059 };
<a name="l00060"></a>00060
<a name="l00061"></a>00061
<a name="l00062"></a>00062 <span class="keyword">template</span> <<span class="keywordtype">bool</span> b1, <span class="keywordtype">bool</span> b2, <span class="keywordtype">bool</span> b3 = <span class="keyword">true</span>, <span class="keywordtype">bool</span> b4 = <span class="keyword">true</span>, <span class="keywordtype">bool</span> b5 = <span class="keyword">true</span>,
<a name="l00063"></a>00063 <span class="keywordtype">bool</span> b6 = <span class="keyword">true</span>, <span class="keywordtype">bool</span> b7 = <span class="keyword">true</span>>
<a name="l00064"></a>00064 <span class="keyword">struct </span><a class="code" href="structCS_1_1Meta_1_1Implementation_1_1TraitAnd.html">TraitAnd</a>;
<a name="l00065"></a>00065
<a name="l00066"></a>00066 <span class="keyword">template</span> <<span class="keywordtype">bool</span> b1, <span class="keywordtype">bool</span> b2, <span class="keywordtype">bool</span> b3, <span class="keywordtype">bool</span> b4, <span class="keywordtype">bool</span> b5, <span class="keywordtype">bool</span> b6, <span class="keywordtype">bool</span> b7>
<a name="l00067"></a><a class="code" href="structCS_1_1Meta_1_1Implementation_1_1TraitAnd.html">00067</a> <span class="keyword">struct </span><a class="code" href="structCS_1_1Meta_1_1Implementation_1_1TraitAnd.html">TraitAnd</a>
<a name="l00068"></a>00068 {
<a name="l00069"></a><a class="code" href="structCS_1_1Meta_1_1Implementation_1_1TraitAnd.html#016a6bb5ee5a157d2e74e3b6a7832239">00069</a> <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">bool</span> <a class="code" href="structCS_1_1Meta_1_1Implementation_1_1TraitAnd.html#016a6bb5ee5a157d2e74e3b6a7832239">value</a> = <span class="keyword">false</span>;
<a name="l00070"></a>00070 };
<a name="l00071"></a>00071
<a name="l00072"></a>00072 <span class="keyword">template</span> <>
<a name="l00073"></a><a class="code" href="structCS_1_1Meta_1_1Implementation_1_1TraitAnd_3_01true_00_01true_00_01true_00_01true_00_01true_00_01true_00_01true_01_4.html">00073</a> <span class="keyword">struct </span><a class="code" href="structCS_1_1Meta_1_1Implementation_1_1TraitAnd.html">TraitAnd</a><true, true, true, true, true, true, true>
<a name="l00074"></a>00074 {
<a name="l00075"></a><a class="code" href="structCS_1_1Meta_1_1Implementation_1_1TraitAnd_3_01true_00_01true_00_01true_00_01true_00_01true_00_01true_00_01true_01_4.html#d40dfb46802557fbd022560441f38ea8">00075</a> <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">bool</span> <a class="code" href="structCS_1_1Meta_1_1Implementation_1_1TraitAnd.html#016a6bb5ee5a157d2e74e3b6a7832239">value</a> = <span class="keyword">true</span>;
<a name="l00076"></a>00076 };
<a name="l00077"></a>00077
<a name="l00078"></a>00078 <span class="keyword">template</span> <<span class="keyword">class</span> T>
<a name="l00079"></a>00079 <a class="code" href="namespaceCS_1_1Meta_1_1Implementation.html#c7a64468fc69e8e1ad5a639fcfb3462e" title="Boolean true type.">YesType</a> IsSameTester(T*, T*);
<a name="l00080"></a>00080
<a name="l00081"></a>00081 <a class="code" href="structCS_1_1Meta_1_1Implementation_1_1NoType.html" title="Boolean false type.">NoType</a> IsSameTester(...);
<a name="l00082"></a>00082
<a name="l00083"></a>00083 <span class="keyword">template</span> <<span class="keyword">class</span> T, <span class="keyword">class</span> U>
<a name="l00084"></a><a class="code" href="structCS_1_1Meta_1_1Implementation_1_1IsSameImpl.html">00084</a> <span class="keyword">struct </span><a class="code" href="structCS_1_1Meta_1_1Implementation_1_1IsSameImpl.html">IsSameImpl</a>
<a name="l00085"></a>00085 {
<a name="l00086"></a><a class="code" href="structCS_1_1Meta_1_1Implementation_1_1IsSameImpl.html#b772da54f89ef908fb515d1fdcaa291d">00086</a> <span class="keyword">static</span> T* <a class="code" href="structCS_1_1Meta_1_1Implementation_1_1IsSameImpl.html#b772da54f89ef908fb515d1fdcaa291d">t</a>;
<a name="l00087"></a><a class="code" href="structCS_1_1Meta_1_1Implementation_1_1IsSameImpl.html#7456cf4ec00a82c00728703d7605662b">00087</a> <span class="keyword">static</span> U* <a class="code" href="structCS_1_1Meta_1_1Implementation_1_1IsSameImpl.html#7456cf4ec00a82c00728703d7605662b">u</a>;
<a name="l00088"></a>00088
<a name="l00089"></a><a class="code" href="structCS_1_1Meta_1_1Implementation_1_1IsSameImpl.html#81d2df082d26c63b3c9f40a5fe157e02">00089</a> <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">bool</span> <a class="code" href="structCS_1_1Meta_1_1Implementation_1_1IsSameImpl.html#81d2df082d26c63b3c9f40a5fe157e02">value</a> = <a class="code" href="structCS_1_1Meta_1_1Implementation_1_1TraitAnd.html">TraitAnd</a><
<a name="l00090"></a>00090 <span class="keyword">sizeof</span>(<a class="code" href="namespaceCS_1_1Meta_1_1Implementation.html#c7a64468fc69e8e1ad5a639fcfb3462e" title="Boolean true type.">YesType</a>) == <span class="keyword">sizeof</span>(IsSameTester(<a class="code" href="structCS_1_1Meta_1_1Implementation_1_1IsSameImpl.html#b772da54f89ef908fb515d1fdcaa291d">t</a>, <a class="code" href="structCS_1_1Meta_1_1Implementation_1_1IsSameImpl.html#7456cf4ec00a82c00728703d7605662b">u</a>)),
<a name="l00091"></a>00091 <a class="code" href="structCS_1_1Meta_1_1Implementation_1_1IsReferenceImpl.html">IsReferenceImpl<T>::value</a> == <a class="code" href="structCS_1_1Meta_1_1Implementation_1_1IsReferenceImpl.html">IsReferenceImpl<U>::value</a>,
<a name="l00092"></a>00092 <span class="keyword">sizeof</span>(T) == <span class="keyword">sizeof</span>(U)>::<a class="code" href="structCS_1_1Meta_1_1Implementation_1_1IsSameImpl.html#81d2df082d26c63b3c9f40a5fe157e02">value</a>;
<a name="l00093"></a>00093 };
<a name="l00094"></a>00094 } <span class="comment">// namespace Implementation</span>
<a name="l00095"></a>00095
<a name="l00096"></a>00096
<a name="l00100"></a>00100 <span class="keyword">template</span> <<span class="keyword">class</span> Type>
<a name="l00101"></a><a class="code" href="structCS_1_1Meta_1_1IsReference.html">00101</a> <span class="keyword">struct </span><a class="code" href="structCS_1_1Meta_1_1IsReference.html" title="Check if Type is a reference or simple type.">IsReference</a>
<a name="l00102"></a>00102 {
<a name="l00103"></a><a class="code" href="structCS_1_1Meta_1_1IsReference.html#4dc7a9b3e78ae2deb325bfd6acaad55e">00103</a> <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">bool</span> <a class="code" href="structCS_1_1Meta_1_1IsReference.html#4dc7a9b3e78ae2deb325bfd6acaad55e">value</a> = CS::Meta::Implementation
<a name="l00104"></a>00104 ::IsReferenceImpl<Type>::value;
<a name="l00105"></a>00105 };
<a name="l00106"></a>00106
<a name="l00110"></a>00110 <span class="keyword">template</span> <<span class="keyword">class</span> Type1, <span class="keyword">class</span> Type2>
<a name="l00111"></a><a class="code" href="structCS_1_1Meta_1_1IsSame.html">00111</a> <span class="keyword">struct </span><a class="code" href="structCS_1_1Meta_1_1IsSame.html" title="Check if two types are the same.">IsSame</a>
<a name="l00112"></a>00112 {
<a name="l00113"></a><a class="code" href="structCS_1_1Meta_1_1IsSame.html#b78fba5f2c951200d0fcaa1db233eb4c">00113</a> <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">bool</span> <a class="code" href="structCS_1_1Meta_1_1IsSame.html#b78fba5f2c951200d0fcaa1db233eb4c">value</a> = CS::Meta::Implementation
<a name="l00114"></a>00114 ::IsSameImpl<Type1, Type2>::value;
<a name="l00115"></a>00115 };
<a name="l00116"></a>00116 } <span class="comment">// namespace TypeTraits</span>
<a name="l00117"></a>00117
<a name="l00118"></a>00118 } <span class="comment">// namespace CS</span>
<a name="l00119"></a>00119
<a name="l00120"></a>00120 <span class="preprocessor">#endif </span>
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