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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span>&#160;<span class="comment">// Tencent is pleased to support the open source community by making RapidJSON available.</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span>&#160;<span class="comment">// </span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span>&#160;<span class="comment">// Copyright (C) 2015 THL A29 Limited, a Tencent company, and Milo Yip.</span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span>&#160;<span class="comment">// Licensed under the MIT License (the &quot;License&quot;); you may not use this file except</span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span>&#160;<span class="comment">// in compliance with the License. You may obtain a copy of the License at</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span>&#160;<span class="comment">// http://opensource.org/licenses/MIT</span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span>&#160;<span class="comment">// Unless required by applicable law or agreed to in writing, software distributed </span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span>&#160;<span class="comment">// under the License is distributed on an &quot;AS IS&quot; BASIS, WITHOUT WARRANTIES OR </span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span>&#160;<span class="comment">// CONDITIONS OF ANY KIND, either express or implied. See the License for the </span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span>&#160;<span class="comment">// specific language governing permissions and limitations under the License.</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span>&#160; </div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span>&#160;<span class="preprocessor">#ifndef RAPIDJSON_INTERNAL_META_H_</span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span>&#160;<span class="preprocessor">#define RAPIDJSON_INTERNAL_META_H_</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span>&#160; </div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span>&#160;<span class="preprocessor">#include &quot;../rapidjson.h&quot;</span></div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span>&#160; </div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span>&#160;<span class="preprocessor">#ifdef __GNUC__</span></div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span>&#160;RAPIDJSON_DIAG_PUSH</div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span>&#160;RAPIDJSON_DIAG_OFF(effc++)</div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>&#160; </div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>&#160;<span class="preprocessor">#if defined(_MSC_VER) &amp;&amp; !defined(__clang__)</span></div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>&#160;RAPIDJSON_DIAG_PUSH</div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>&#160;RAPIDJSON_DIAG_OFF(6334)</div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>&#160; </div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>&#160;<span class="preprocessor">#if RAPIDJSON_HAS_CXX11_TYPETRAITS</span></div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>&#160;<span class="preprocessor">#include &lt;type_traits&gt;</span></div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>&#160; </div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>&#160;<span class="comment">//@cond RAPIDJSON_INTERNAL</span></div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>&#160;RAPIDJSON_NAMESPACE_BEGIN</div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>&#160;<span class="keyword">namespace </span>internal {</div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>&#160; </div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>&#160;<span class="comment">// Helper to wrap/convert arbitrary types to void, useful for arbitrary type matching</span></div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt; <span class="keyword">struct </span>Void { <span class="keyword">typedef</span> <span class="keywordtype">void</span> <a class="code" href="namespacerapidjson.html#ae79a4751c1c460ff0de5ecc07874f3e4">Type</a>; };</div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>&#160;<span class="comment"></span> </div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>&#160;<span class="comment">///////////////////////////////////////////////////////////////////////////////</span></div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>&#160;<span class="comment"></span><span class="comment">// BoolType, TrueType, FalseType</span></div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>&#160;<span class="keyword">template</span> &lt;<span class="keywordtype">bool</span> Cond&gt; <span class="keyword">struct </span>BoolType {</div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>&#160; <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">bool</span> <a class="code" href="namespacerapidjson.html#aa65fc9fb381b2cbc54f98673eadd6505">Value</a> = Cond;</div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>&#160; <span class="keyword">typedef</span> BoolType <a class="code" href="namespacerapidjson.html#ae79a4751c1c460ff0de5ecc07874f3e4">Type</a>;</div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>&#160;};</div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>&#160;<span class="keyword">typedef</span> BoolType&lt;true&gt; TrueType;</div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>&#160;<span class="keyword">typedef</span> BoolType&lt;false&gt; FalseType;</div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>&#160; </div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>&#160;<span class="comment"></span> </div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>&#160;<span class="comment">///////////////////////////////////////////////////////////////////////////////</span></div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>&#160;<span class="comment"></span><span class="comment">// SelectIf, BoolExpr, NotExpr, AndExpr, OrExpr</span></div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>&#160; </div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>&#160;<span class="keyword">template</span> &lt;<span class="keywordtype">bool</span> C&gt; <span class="keyword">struct </span>SelectIfImpl { <span class="keyword">template</span> &lt;<span class="keyword">typename</span> T1, <span class="keyword">typename</span> T2&gt; <span class="keyword">struct </span>Apply { <span class="keyword">typedef</span> T1 <a class="code" href="namespacerapidjson.html#ae79a4751c1c460ff0de5ecc07874f3e4">Type</a>; }; };</div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>&#160;<span class="keyword">template</span> &lt;&gt; <span class="keyword">struct </span>SelectIfImpl&lt;false&gt; { <span class="keyword">template</span> &lt;<span class="keyword">typename</span> T1, <span class="keyword">typename</span> T2&gt; <span class="keyword">struct </span>Apply { <span class="keyword">typedef</span> T2 <a class="code" href="namespacerapidjson.html#ae79a4751c1c460ff0de5ecc07874f3e4">Type</a>; }; };</div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>&#160;<span class="keyword">template</span> &lt;<span class="keywordtype">bool</span> C, <span class="keyword">typename</span> T1, <span class="keyword">typename</span> T2&gt; <span class="keyword">struct </span>SelectIfCond : SelectIfImpl&lt;C&gt;::template Apply&lt;T1,T2&gt; {};</div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> C, <span class="keyword">typename</span> T1, <span class="keyword">typename</span> T2&gt; <span class="keyword">struct </span>SelectIf : SelectIfCond&lt;C::Value, T1, T2&gt; {};</div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>&#160; </div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>&#160;<span class="keyword">template</span> &lt;<span class="keywordtype">bool</span> Cond1, <span class="keywordtype">bool</span> Cond2&gt; <span class="keyword">struct </span>AndExprCond : FalseType {};</div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>&#160;<span class="keyword">template</span> &lt;&gt; <span class="keyword">struct </span>AndExprCond&lt;true, true&gt; : TrueType {};</div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>&#160;<span class="keyword">template</span> &lt;<span class="keywordtype">bool</span> Cond1, <span class="keywordtype">bool</span> Cond2&gt; <span class="keyword">struct </span>OrExprCond : TrueType {};</div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>&#160;<span class="keyword">template</span> &lt;&gt; <span class="keyword">struct </span>OrExprCond&lt;false, false&gt; : FalseType {};</div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>&#160; </div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> C&gt; <span class="keyword">struct </span>BoolExpr : SelectIf&lt;C,TrueType,FalseType&gt;<a class="code" href="namespacerapidjson.html#ae79a4751c1c460ff0de5ecc07874f3e4">::Type</a> {};</div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> C&gt; <span class="keyword">struct </span>NotExpr : SelectIf&lt;C,FalseType,TrueType&gt;<a class="code" href="namespacerapidjson.html#ae79a4751c1c460ff0de5ecc07874f3e4">::Type</a> {};</div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> C1, <span class="keyword">typename</span> C2&gt; <span class="keyword">struct </span>AndExpr : AndExprCond&lt;C1::Value, C2::Value&gt;<a class="code" href="namespacerapidjson.html#ae79a4751c1c460ff0de5ecc07874f3e4">::Type</a> {};</div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> C1, <span class="keyword">typename</span> C2&gt; <span class="keyword">struct </span>OrExpr : OrExprCond&lt;C1::Value, C2::Value&gt;<a class="code" href="namespacerapidjson.html#ae79a4751c1c460ff0de5ecc07874f3e4">::Type</a> {};</div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>&#160; </div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>&#160;<span class="comment"></span> </div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>&#160;<span class="comment">///////////////////////////////////////////////////////////////////////////////</span></div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>&#160;<span class="comment"></span><span class="comment">// AddConst, MaybeAddConst, RemoveConst</span></div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt; <span class="keyword">struct </span>AddConst { <span class="keyword">typedef</span> <span class="keyword">const</span> T <a class="code" href="namespacerapidjson.html#ae79a4751c1c460ff0de5ecc07874f3e4">Type</a>; };</div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>&#160;<span class="keyword">template</span> &lt;<span class="keywordtype">bool</span> Constify, <span class="keyword">typename</span> T&gt; <span class="keyword">struct </span>MaybeAddConst : SelectIfCond&lt;Constify, const T, T&gt; {};</div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt; <span class="keyword">struct </span>RemoveConst { <span class="keyword">typedef</span> T <a class="code" href="namespacerapidjson.html#ae79a4751c1c460ff0de5ecc07874f3e4">Type</a>; };</div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt; <span class="keyword">struct </span>RemoveConst&lt;const T&gt; { <span class="keyword">typedef</span> T <a class="code" href="namespacerapidjson.html#ae79a4751c1c460ff0de5ecc07874f3e4">Type</a>; };</div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>&#160; </div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>&#160;<span class="comment"></span> </div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>&#160;<span class="comment">///////////////////////////////////////////////////////////////////////////////</span></div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>&#160;<span class="comment"></span><span class="comment">// IsSame, IsConst, IsMoreConst, IsPointer</span></div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> T, <span class="keyword">typename</span> U&gt; <span class="keyword">struct </span>IsSame : FalseType {};</div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt; <span class="keyword">struct </span>IsSame&lt;T, T&gt; : TrueType {};</div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>&#160; </div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt; <span class="keyword">struct </span>IsConst : FalseType {};</div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt; <span class="keyword">struct </span>IsConst&lt;const T&gt; : TrueType {};</div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>&#160; </div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> CT, <span class="keyword">typename</span> T&gt;</div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>&#160;<span class="keyword">struct </span>IsMoreConst</div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>&#160; : AndExpr&lt;IsSame&lt;typename RemoveConst&lt;CT&gt;::Type, typename RemoveConst&lt;T&gt;::Type&gt;,</div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>&#160; BoolType&lt;IsConst&lt;CT&gt;::Value &gt;= IsConst&lt;T&gt;::Value&gt; &gt;<a class="code" href="namespacerapidjson.html#ae79a4751c1c460ff0de5ecc07874f3e4">::Type</a> {};</div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>&#160; </div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt; <span class="keyword">struct </span>IsPointer : FalseType {};</div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt; <span class="keyword">struct </span>IsPointer&lt;T*&gt; : TrueType {};</div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>&#160;<span class="comment"></span> </div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>&#160;<span class="comment">///////////////////////////////////////////////////////////////////////////////</span></div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>&#160;<span class="comment"></span><span class="comment">// IsBaseOf</span></div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>&#160;<span class="preprocessor">#if RAPIDJSON_HAS_CXX11_TYPETRAITS</span></div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>&#160; </div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> B, <span class="keyword">typename</span> D&gt; <span class="keyword">struct </span>IsBaseOf</div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>&#160; : BoolType&lt; ::std::is_base_of&lt;B,D&gt;::value&gt; {};</div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>&#160; </div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>&#160;<span class="preprocessor">#else // simplified version adopted from Boost</span></div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>&#160; </div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>&#160;<span class="keyword">template</span>&lt;<span class="keyword">typename</span> B, <span class="keyword">typename</span> D&gt; <span class="keyword">struct </span>IsBaseOfImpl {</div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>&#160; <a class="code" href="rapidjson_8h.html#af95188da1d8eb6d4b148fe9ce71cd7c4">RAPIDJSON_STATIC_ASSERT</a>(<span class="keyword">sizeof</span>(B) != 0);</div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>&#160; <a class="code" href="rapidjson_8h.html#af95188da1d8eb6d4b148fe9ce71cd7c4">RAPIDJSON_STATIC_ASSERT</a>(<span class="keyword">sizeof</span>(D) != 0);</div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>&#160; </div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>&#160; <span class="keyword">typedef</span> char (&amp;Yes)[1];</div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>&#160; <span class="keyword">typedef</span> char (&amp;No) [2];</div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>&#160; </div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>&#160; <span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>&#160; <span class="keyword">static</span> Yes Check(<span class="keyword">const</span> D*, T);</div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>&#160; <span class="keyword">static</span> No Check(<span class="keyword">const</span> B*, <span class="keywordtype">int</span>);</div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>&#160; </div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>&#160; <span class="keyword">struct </span>Host {</div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>&#160; <span class="keyword">operator</span> <span class="keyword">const</span> B*() <span class="keyword">const</span>;</div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>&#160; <span class="keyword">operator</span> <span class="keyword">const</span> D*();</div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>&#160; };</div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>&#160; </div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>&#160; <span class="keyword">enum</span> { <a class="code" href="namespacerapidjson.html#aa65fc9fb381b2cbc54f98673eadd6505">Value</a> = (<span class="keyword">sizeof</span>(Check(Host(), 0)) == <span class="keyword">sizeof</span>(Yes)) };</div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>&#160;};</div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>&#160; </div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> B, <span class="keyword">typename</span> D&gt; <span class="keyword">struct </span>IsBaseOf</div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>&#160; : OrExpr&lt;IsSame&lt;B, D&gt;, BoolExpr&lt;IsBaseOfImpl&lt;B, D&gt; &gt; &gt;<a class="code" href="namespacerapidjson.html#ae79a4751c1c460ff0de5ecc07874f3e4">::Type</a> {};</div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>&#160; </div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>&#160;<span class="preprocessor">#endif // RAPIDJSON_HAS_CXX11_TYPETRAITS</span></div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>&#160; </div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>&#160;<span class="comment"></span> </div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>&#160;<span class="comment">//////////////////////////////////////////////////////////////////////////</span></div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>&#160;<span class="comment"></span><span class="comment">// EnableIf / DisableIf</span></div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>&#160;<span class="keyword">template</span> &lt;<span class="keywordtype">bool</span> Condition, <span class="keyword">typename</span> T = <span class="keywordtype">void</span>&gt; <span class="keyword">struct </span>EnableIfCond { <span class="keyword">typedef</span> T <a class="code" href="namespacerapidjson.html#ae79a4751c1c460ff0de5ecc07874f3e4">Type</a>; };</div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt; <span class="keyword">struct </span>EnableIfCond&lt;false, T&gt; { <span class="comment">/* empty */</span> };</div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>&#160; </div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>&#160;<span class="keyword">template</span> &lt;<span class="keywordtype">bool</span> Condition, <span class="keyword">typename</span> T = <span class="keywordtype">void</span>&gt; <span class="keyword">struct </span>DisableIfCond { <span class="keyword">typedef</span> T <a class="code" href="namespacerapidjson.html#ae79a4751c1c460ff0de5ecc07874f3e4">Type</a>; };</div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt; <span class="keyword">struct </span>DisableIfCond&lt;true, T&gt; { <span class="comment">/* empty */</span> };</div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>&#160; </div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> Condition, <span class="keyword">typename</span> T = <span class="keywordtype">void</span>&gt;</div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>&#160;<span class="keyword">struct </span>EnableIf : EnableIfCond&lt;Condition::Value, T&gt; {};</div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>&#160; </div>
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> Condition, <span class="keyword">typename</span> T = <span class="keywordtype">void</span>&gt;</div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>&#160;<span class="keyword">struct </span>DisableIf : DisableIfCond&lt;Condition::Value, T&gt; {};</div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>&#160; </div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>&#160;<span class="comment">// SFINAE helpers</span></div>
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>&#160;<span class="keyword">struct </span>SfinaeTag {};</div>
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt; <span class="keyword">struct </span>RemoveSfinaeTag;</div>
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt; <span class="keyword">struct </span>RemoveSfinaeTag&lt;SfinaeTag&amp;(*)(T)&gt; { <span class="keyword">typedef</span> T <a class="code" href="namespacerapidjson.html#ae79a4751c1c460ff0de5ecc07874f3e4">Type</a>; };</div>
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>&#160; </div>
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>&#160;<span class="preprocessor">#define RAPIDJSON_REMOVEFPTR_(type) \</span></div>
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>&#160;<span class="preprocessor"> typename ::RAPIDJSON_NAMESPACE::internal::RemoveSfinaeTag \</span></div>
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>&#160;<span class="preprocessor"> &lt; ::RAPIDJSON_NAMESPACE::internal::SfinaeTag&amp;(*) type&gt;::Type</span></div>
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>&#160; </div>
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>&#160;<span class="preprocessor">#define RAPIDJSON_ENABLEIF(cond) \</span></div>
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>&#160;<span class="preprocessor"> typename ::RAPIDJSON_NAMESPACE::internal::EnableIf \</span></div>
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>&#160;<span class="preprocessor"> &lt;RAPIDJSON_REMOVEFPTR_(cond)&gt;::Type * = NULL</span></div>
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>&#160; </div>
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>&#160;<span class="preprocessor">#define RAPIDJSON_DISABLEIF(cond) \</span></div>
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>&#160;<span class="preprocessor"> typename ::RAPIDJSON_NAMESPACE::internal::DisableIf \</span></div>
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>&#160;<span class="preprocessor"> &lt;RAPIDJSON_REMOVEFPTR_(cond)&gt;::Type * = NULL</span></div>
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>&#160; </div>
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>&#160;<span class="preprocessor">#define RAPIDJSON_ENABLEIF_RETURN(cond,returntype) \</span></div>
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>&#160;<span class="preprocessor"> typename ::RAPIDJSON_NAMESPACE::internal::EnableIf \</span></div>
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span>&#160;<span class="preprocessor"> &lt;RAPIDJSON_REMOVEFPTR_(cond), \</span></div>
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>&#160;<span class="preprocessor"> RAPIDJSON_REMOVEFPTR_(returntype)&gt;::Type</span></div>
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>&#160; </div>
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>&#160;<span class="preprocessor">#define RAPIDJSON_DISABLEIF_RETURN(cond,returntype) \</span></div>
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>&#160;<span class="preprocessor"> typename ::RAPIDJSON_NAMESPACE::internal::DisableIf \</span></div>
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>&#160;<span class="preprocessor"> &lt;RAPIDJSON_REMOVEFPTR_(cond), \</span></div>
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>&#160;<span class="preprocessor"> RAPIDJSON_REMOVEFPTR_(returntype)&gt;::Type</span></div>
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span>&#160; </div>
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>&#160;} <span class="comment">// namespace internal</span></div>
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>&#160;RAPIDJSON_NAMESPACE_END</div>
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>&#160;<span class="comment">//@endcond</span></div>
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>&#160; </div>
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span>&#160;<span class="preprocessor">#if defined(_MSC_VER) &amp;&amp; !defined(__clang__)</span></div>
<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>&#160;RAPIDJSON_DIAG_POP</div>
<div class="line"><a name="l00180"></a><span class="lineno"> 180</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>&#160; </div>
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>&#160;<span class="preprocessor">#ifdef __GNUC__</span></div>
<div class="line"><a name="l00183"></a><span class="lineno"> 183</span>&#160;RAPIDJSON_DIAG_POP</div>
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>&#160; </div>
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span>&#160;<span class="preprocessor">#endif // RAPIDJSON_INTERNAL_META_H_</span></div>
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<div class="ttc" id="anamespacerapidjson_html_ae79a4751c1c460ff0de5ecc07874f3e4"><div class="ttname"><a href="namespacerapidjson.html#ae79a4751c1c460ff0de5ecc07874f3e4">rapidjson::Type</a></div><div class="ttdeci">Type</div><div class="ttdoc">Type of JSON value.</div><div class="ttdef"><b>Definition:</b> rapidjson.h:729</div></div>
<div class="ttc" id="anamespacerapidjson_html_aa65fc9fb381b2cbc54f98673eadd6505"><div class="ttname"><a href="namespacerapidjson.html#aa65fc9fb381b2cbc54f98673eadd6505">rapidjson::Value</a></div><div class="ttdeci">GenericValue&lt; UTF8&lt;&gt; &gt; Value</div><div class="ttdoc">GenericValue with UTF8 encoding.</div><div class="ttdef"><b>Definition:</b> document.h:2470</div></div>
<div class="ttc" id="arapidjson_8h_html_af95188da1d8eb6d4b148fe9ce71cd7c4"><div class="ttname"><a href="rapidjson_8h.html#af95188da1d8eb6d4b148fe9ce71cd7c4">RAPIDJSON_STATIC_ASSERT</a></div><div class="ttdeci">#define RAPIDJSON_STATIC_ASSERT(x)</div><div class="ttdoc">(Internal) macro to check for conditions at compile-time</div><div class="ttdef"><b>Definition:</b> rapidjson.h:476</div></div>
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