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<div class="title">stack.h</div> </div>
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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_STACK_H_</span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span>&#160;<span class="preprocessor">#define RAPIDJSON_INTERNAL_STACK_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;../allocators.h&quot;</span></div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span>&#160;<span class="preprocessor">#include &quot;swap.h&quot;</span></div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span>&#160;<span class="preprocessor">#include &lt;cstddef&gt;</span></div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span>&#160; </div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span>&#160;<span class="preprocessor">#if defined(__clang__)</span></div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span>&#160;RAPIDJSON_DIAG_PUSH</div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>&#160;RAPIDJSON_DIAG_OFF(c++98-compat)</div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>&#160; </div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>&#160;RAPIDJSON_NAMESPACE_BEGIN</div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>&#160;<span class="keyword">namespace </span>internal {</div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>&#160;<span class="comment"></span> </div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>&#160;<span class="comment">///////////////////////////////////////////////////////////////////////////////</span></div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>&#160;<span class="comment"></span><span class="comment">// Stack</span></div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>&#160;<span class="comment"></span> </div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>&#160;<span class="comment">//! A type-unsafe stack for storing different types of data.</span></div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>&#160;<span class="comment"></span><span class="comment">/*! \tparam Allocator Allocator for allocating stack memory.</span></div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>&#160;<span class="comment">*/</span></div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> Allocator&gt;</div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>&#160;<span class="keyword">class </span>Stack {</div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>&#160;<span class="keyword">public</span>:</div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>&#160; <span class="comment">// Optimization note: Do not allocate memory for stack_ in constructor.</span></div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>&#160; <span class="comment">// Do it lazily when first Push() -&gt; Expand() -&gt; Resize().</span></div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>&#160; Stack(<a class="code" href="classrapidjson_1_1_allocator.html">Allocator</a>* allocator, <span class="keywordtype">size_t</span> stackCapacity) : allocator_(allocator), ownAllocator_(0), stack_(0), stackTop_(0), stackEnd_(0), initialCapacity_(stackCapacity) {</div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>&#160; }</div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>&#160; </div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>&#160;<span class="preprocessor">#if RAPIDJSON_HAS_CXX11_RVALUE_REFS</span></div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>&#160; Stack(Stack&amp;&amp; rhs)</div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>&#160; : allocator_(rhs.allocator_),</div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>&#160; ownAllocator_(rhs.ownAllocator_),</div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>&#160; stack_(rhs.stack_),</div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>&#160; stackTop_(rhs.stackTop_),</div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>&#160; stackEnd_(rhs.stackEnd_),</div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>&#160; initialCapacity_(rhs.initialCapacity_)</div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>&#160; {</div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>&#160; rhs.allocator_ = 0;</div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>&#160; rhs.ownAllocator_ = 0;</div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>&#160; rhs.stack_ = 0;</div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>&#160; rhs.stackTop_ = 0;</div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>&#160; rhs.stackEnd_ = 0;</div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>&#160; rhs.initialCapacity_ = 0;</div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>&#160; }</div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>&#160; </div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>&#160; ~Stack() {</div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>&#160; Destroy();</div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>&#160; }</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="preprocessor">#if RAPIDJSON_HAS_CXX11_RVALUE_REFS</span></div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>&#160; Stack&amp; operator=(Stack&amp;&amp; rhs) {</div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>&#160; <span class="keywordflow">if</span> (&amp;rhs != <span class="keyword">this</span>)</div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>&#160; {</div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>&#160; Destroy();</div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>&#160; </div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>&#160; allocator_ = rhs.allocator_;</div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>&#160; ownAllocator_ = rhs.ownAllocator_;</div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>&#160; stack_ = rhs.stack_;</div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>&#160; stackTop_ = rhs.stackTop_;</div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>&#160; stackEnd_ = rhs.stackEnd_;</div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>&#160; initialCapacity_ = rhs.initialCapacity_;</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; rhs.allocator_ = 0;</div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>&#160; rhs.ownAllocator_ = 0;</div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>&#160; rhs.stack_ = 0;</div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>&#160; rhs.stackTop_ = 0;</div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>&#160; rhs.stackEnd_ = 0;</div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>&#160; rhs.initialCapacity_ = 0;</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="keywordflow">return</span> *<span class="keyword">this</span>;</div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>&#160; }</div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>&#160; </div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>&#160; <span class="keywordtype">void</span> Swap(Stack&amp; rhs) RAPIDJSON_NOEXCEPT {</div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>&#160; internal::Swap(allocator_, rhs.allocator_);</div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>&#160; internal::Swap(ownAllocator_, rhs.ownAllocator_);</div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>&#160; internal::Swap(stack_, rhs.stack_);</div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>&#160; internal::Swap(stackTop_, rhs.stackTop_);</div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>&#160; internal::Swap(stackEnd_, rhs.stackEnd_);</div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>&#160; internal::Swap(initialCapacity_, rhs.initialCapacity_);</div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>&#160; }</div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>&#160; </div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>&#160; <span class="keywordtype">void</span> Clear() { stackTop_ = stack_; }</div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>&#160; </div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>&#160; <span class="keywordtype">void</span> ShrinkToFit() { </div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>&#160; <span class="keywordflow">if</span> (Empty()) {</div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>&#160; <span class="comment">// If the stack is empty, completely deallocate the memory.</span></div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>&#160; Allocator::Free(stack_); <span class="comment">// NOLINT (+clang-analyzer-unix.Malloc)</span></div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>&#160; stack_ = 0;</div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>&#160; stackTop_ = 0;</div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>&#160; stackEnd_ = 0;</div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>&#160; }</div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>&#160; <span class="keywordflow">else</span></div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>&#160; Resize(GetSize());</div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>&#160; }</div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>&#160; </div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>&#160; <span class="comment">// Optimization note: try to minimize the size of this function for force inline.</span></div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>&#160; <span class="comment">// Expansion is run very infrequently, so it is moved to another (probably non-inline) function.</span></div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>&#160; <span class="keyword">template</span>&lt;<span class="keyword">typename</span> T&gt;</div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>&#160; RAPIDJSON_FORCEINLINE <span class="keywordtype">void</span> Reserve(<span class="keywordtype">size_t</span> count = 1) {</div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>&#160; <span class="comment">// Expand the stack if needed</span></div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>&#160; <span class="keywordflow">if</span> (<a class="code" href="group___r_a_p_i_d_j_s_o_n___c_o_n_f_i_g.html#ga6a2b1695c13e77ae425e3cbac980ccb5">RAPIDJSON_UNLIKELY</a>(static_cast&lt;std::ptrdiff_t&gt;(<span class="keyword">sizeof</span>(T) * count) &gt; (stackEnd_ - stackTop_)))</div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>&#160; Expand&lt;T&gt;(count);</div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>&#160; }</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; <span class="keyword">template</span>&lt;<span class="keyword">typename</span> T&gt;</div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>&#160; RAPIDJSON_FORCEINLINE T* Push(<span class="keywordtype">size_t</span> count = 1) {</div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>&#160; Reserve&lt;T&gt;(count);</div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>&#160; <span class="keywordflow">return</span> PushUnsafe&lt;T&gt;(count);</div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>&#160; }</div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>&#160; </div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>&#160; <span class="keyword">template</span>&lt;<span class="keyword">typename</span> T&gt;</div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>&#160; RAPIDJSON_FORCEINLINE T* PushUnsafe(<span class="keywordtype">size_t</span> count = 1) {</div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>&#160; <a class="code" href="group___r_a_p_i_d_j_s_o_n___c_o_n_f_i_g.html#gabeba18d612187bad2ac62aed9276d47c">RAPIDJSON_ASSERT</a>(stackTop_);</div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>&#160; <a class="code" href="group___r_a_p_i_d_j_s_o_n___c_o_n_f_i_g.html#gabeba18d612187bad2ac62aed9276d47c">RAPIDJSON_ASSERT</a>(static_cast&lt;std::ptrdiff_t&gt;(<span class="keyword">sizeof</span>(T) * count) &lt;= (stackEnd_ - stackTop_));</div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>&#160; T* ret = reinterpret_cast&lt;T*&gt;(stackTop_);</div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>&#160; stackTop_ += <span class="keyword">sizeof</span>(T) * count;</div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>&#160; <span class="keywordflow">return</span> ret;</div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>&#160; }</div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>&#160; </div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>&#160; <span class="keyword">template</span>&lt;<span class="keyword">typename</span> T&gt;</div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>&#160; T* Pop(<span class="keywordtype">size_t</span> count) {</div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>&#160; <a class="code" href="group___r_a_p_i_d_j_s_o_n___c_o_n_f_i_g.html#gabeba18d612187bad2ac62aed9276d47c">RAPIDJSON_ASSERT</a>(GetSize() &gt;= count * <span class="keyword">sizeof</span>(T));</div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>&#160; stackTop_ -= count * <span class="keyword">sizeof</span>(T);</div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>&#160; <span class="keywordflow">return</span> reinterpret_cast&lt;T*&gt;(stackTop_);</div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>&#160; }</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> T&gt;</div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>&#160; T* Top() { </div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>&#160; <a class="code" href="group___r_a_p_i_d_j_s_o_n___c_o_n_f_i_g.html#gabeba18d612187bad2ac62aed9276d47c">RAPIDJSON_ASSERT</a>(GetSize() &gt;= <span class="keyword">sizeof</span>(T));</div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>&#160; <span class="keywordflow">return</span> reinterpret_cast&lt;T*&gt;(stackTop_ - <span class="keyword">sizeof</span>(T));</div>
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>&#160; }</div>
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>&#160; </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;</div>
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>&#160; <span class="keyword">const</span> T* Top()<span class="keyword"> const </span>{</div>
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>&#160; <a class="code" href="group___r_a_p_i_d_j_s_o_n___c_o_n_f_i_g.html#gabeba18d612187bad2ac62aed9276d47c">RAPIDJSON_ASSERT</a>(GetSize() &gt;= <span class="keyword">sizeof</span>(T));</div>
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>&#160; <span class="keywordflow">return</span> reinterpret_cast&lt;T*&gt;(stackTop_ - <span class="keyword">sizeof</span>(T));</div>
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>&#160; }</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="keyword">template</span>&lt;<span class="keyword">typename</span> T&gt;</div>
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>&#160; T* End() { <span class="keywordflow">return</span> reinterpret_cast&lt;T*&gt;(stackTop_); }</div>
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>&#160; </div>
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>&#160; <span class="keyword">template</span>&lt;<span class="keyword">typename</span> T&gt;</div>
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>&#160; <span class="keyword">const</span> T* End()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> reinterpret_cast&lt;T*&gt;(stackTop_); }</div>
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>&#160; </div>
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>&#160; <span class="keyword">template</span>&lt;<span class="keyword">typename</span> T&gt;</div>
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>&#160; T* Bottom() { <span class="keywordflow">return</span> reinterpret_cast&lt;T*&gt;(stack_); }</div>
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>&#160; </div>
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>&#160; <span class="keyword">template</span>&lt;<span class="keyword">typename</span> T&gt;</div>
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span>&#160; <span class="keyword">const</span> T* Bottom()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> reinterpret_cast&lt;T*&gt;(stack_); }</div>
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>&#160; </div>
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>&#160; <span class="keywordtype">bool</span> HasAllocator()<span class="keyword"> const </span>{</div>
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>&#160; <span class="keywordflow">return</span> allocator_ != 0;</div>
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>&#160; }</div>
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>&#160; </div>
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>&#160; <a class="code" href="classrapidjson_1_1_allocator.html">Allocator</a>&amp; GetAllocator() {</div>
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span>&#160; <a class="code" href="group___r_a_p_i_d_j_s_o_n___c_o_n_f_i_g.html#gabeba18d612187bad2ac62aed9276d47c">RAPIDJSON_ASSERT</a>(allocator_);</div>
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>&#160; <span class="keywordflow">return</span> *allocator_;</div>
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>&#160; }</div>
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>&#160; </div>
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>&#160; <span class="keywordtype">bool</span> Empty()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> stackTop_ == stack_; }</div>
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span>&#160; <span class="keywordtype">size_t</span> GetSize()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> static_cast&lt;size_t&gt;(stackTop_ - stack_); }</div>
<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>&#160; <span class="keywordtype">size_t</span> GetCapacity()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> static_cast&lt;size_t&gt;(stackEnd_ - stack_); }</div>
<div class="line"><a name="l00180"></a><span class="lineno"> 180</span>&#160; </div>
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>&#160;<span class="keyword">private</span>:</div>
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>&#160; <span class="keyword">template</span>&lt;<span class="keyword">typename</span> T&gt;</div>
<div class="line"><a name="l00183"></a><span class="lineno"> 183</span>&#160; <span class="keywordtype">void</span> Expand(<span class="keywordtype">size_t</span> count) {</div>
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>&#160; <span class="comment">// Only expand the capacity if the current stack exists. Otherwise just create a stack with initial capacity.</span></div>
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>&#160; <span class="keywordtype">size_t</span> newCapacity;</div>
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span>&#160; <span class="keywordflow">if</span> (stack_ == 0) {</div>
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span>&#160; <span class="keywordflow">if</span> (!allocator_)</div>
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span>&#160; ownAllocator_ = allocator_ = <a class="code" href="rapidjson_8h.html#abdc7cd7902748ffe6626d71c59a73c3b">RAPIDJSON_NEW</a>(<a class="code" href="classrapidjson_1_1_allocator.html">Allocator</a>)();</div>
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span>&#160; newCapacity = initialCapacity_;</div>
<div class="line"><a name="l00190"></a><span class="lineno"> 190</span>&#160; } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00191"></a><span class="lineno"> 191</span>&#160; newCapacity = GetCapacity();</div>
<div class="line"><a name="l00192"></a><span class="lineno"> 192</span>&#160; newCapacity += (newCapacity + 1) / 2;</div>
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span>&#160; }</div>
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>&#160; <span class="keywordtype">size_t</span> newSize = GetSize() + <span class="keyword">sizeof</span>(T) * count;</div>
<div class="line"><a name="l00195"></a><span class="lineno"> 195</span>&#160; <span class="keywordflow">if</span> (newCapacity &lt; newSize)</div>
<div class="line"><a name="l00196"></a><span class="lineno"> 196</span>&#160; newCapacity = newSize;</div>
<div class="line"><a name="l00197"></a><span class="lineno"> 197</span>&#160; </div>
<div class="line"><a name="l00198"></a><span class="lineno"> 198</span>&#160; Resize(newCapacity);</div>
<div class="line"><a name="l00199"></a><span class="lineno"> 199</span>&#160; }</div>
<div class="line"><a name="l00200"></a><span class="lineno"> 200</span>&#160; </div>
<div class="line"><a name="l00201"></a><span class="lineno"> 201</span>&#160; <span class="keywordtype">void</span> Resize(<span class="keywordtype">size_t</span> newCapacity) {</div>
<div class="line"><a name="l00202"></a><span class="lineno"> 202</span>&#160; <span class="keyword">const</span> <span class="keywordtype">size_t</span> size = GetSize(); <span class="comment">// Backup the current size</span></div>
<div class="line"><a name="l00203"></a><span class="lineno"> 203</span>&#160; stack_ = static_cast&lt;char*&gt;(allocator_-&gt;Realloc(stack_, GetCapacity(), newCapacity));</div>
<div class="line"><a name="l00204"></a><span class="lineno"> 204</span>&#160; stackTop_ = stack_ + size;</div>
<div class="line"><a name="l00205"></a><span class="lineno"> 205</span>&#160; stackEnd_ = stack_ + newCapacity;</div>
<div class="line"><a name="l00206"></a><span class="lineno"> 206</span>&#160; }</div>
<div class="line"><a name="l00207"></a><span class="lineno"> 207</span>&#160; </div>
<div class="line"><a name="l00208"></a><span class="lineno"> 208</span>&#160; <span class="keywordtype">void</span> Destroy() {</div>
<div class="line"><a name="l00209"></a><span class="lineno"> 209</span>&#160; Allocator::Free(stack_);</div>
<div class="line"><a name="l00210"></a><span class="lineno"> 210</span>&#160; <a class="code" href="rapidjson_8h.html#a52c941c3fdd646527cdcd42aa846a28a">RAPIDJSON_DELETE</a>(ownAllocator_); <span class="comment">// Only delete if it is owned by the stack</span></div>
<div class="line"><a name="l00211"></a><span class="lineno"> 211</span>&#160; }</div>
<div class="line"><a name="l00212"></a><span class="lineno"> 212</span>&#160; </div>
<div class="line"><a name="l00213"></a><span class="lineno"> 213</span>&#160; <span class="comment">// Prohibit copy constructor &amp; assignment operator.</span></div>
<div class="line"><a name="l00214"></a><span class="lineno"> 214</span>&#160; Stack(<span class="keyword">const</span> Stack&amp;);</div>
<div class="line"><a name="l00215"></a><span class="lineno"> 215</span>&#160; Stack&amp; operator=(<span class="keyword">const</span> Stack&amp;);</div>
<div class="line"><a name="l00216"></a><span class="lineno"> 216</span>&#160; </div>
<div class="line"><a name="l00217"></a><span class="lineno"> 217</span>&#160; <a class="code" href="classrapidjson_1_1_allocator.html">Allocator</a>* allocator_;</div>
<div class="line"><a name="l00218"></a><span class="lineno"> 218</span>&#160; <a class="code" href="classrapidjson_1_1_allocator.html">Allocator</a>* ownAllocator_;</div>
<div class="line"><a name="l00219"></a><span class="lineno"> 219</span>&#160; <span class="keywordtype">char</span> *stack_;</div>
<div class="line"><a name="l00220"></a><span class="lineno"> 220</span>&#160; <span class="keywordtype">char</span> *stackTop_;</div>
<div class="line"><a name="l00221"></a><span class="lineno"> 221</span>&#160; <span class="keywordtype">char</span> *stackEnd_;</div>
<div class="line"><a name="l00222"></a><span class="lineno"> 222</span>&#160; <span class="keywordtype">size_t</span> initialCapacity_;</div>
<div class="line"><a name="l00223"></a><span class="lineno"> 223</span>&#160;};</div>
<div class="line"><a name="l00224"></a><span class="lineno"> 224</span>&#160; </div>
<div class="line"><a name="l00225"></a><span class="lineno"> 225</span>&#160;} <span class="comment">// namespace internal</span></div>
<div class="line"><a name="l00226"></a><span class="lineno"> 226</span>&#160;RAPIDJSON_NAMESPACE_END</div>
<div class="line"><a name="l00227"></a><span class="lineno"> 227</span>&#160; </div>
<div class="line"><a name="l00228"></a><span class="lineno"> 228</span>&#160;<span class="preprocessor">#if defined(__clang__)</span></div>
<div class="line"><a name="l00229"></a><span class="lineno"> 229</span>&#160;RAPIDJSON_DIAG_POP</div>
<div class="line"><a name="l00230"></a><span class="lineno"> 230</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00231"></a><span class="lineno"> 231</span>&#160; </div>
<div class="line"><a name="l00232"></a><span class="lineno"> 232</span>&#160;<span class="preprocessor">#endif // RAPIDJSON_STACK_H_</span></div>
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<div class="ttc" id="aclassrapidjson_1_1_allocator_html"><div class="ttname"><a href="classrapidjson_1_1_allocator.html">Allocator</a></div><div class="ttdoc">Concept for allocating, resizing and freeing memory block.</div></div>
<div class="ttc" id="agroup___r_a_p_i_d_j_s_o_n___c_o_n_f_i_g_html_gabeba18d612187bad2ac62aed9276d47c"><div class="ttname"><a href="group___r_a_p_i_d_j_s_o_n___c_o_n_f_i_g.html#gabeba18d612187bad2ac62aed9276d47c">RAPIDJSON_ASSERT</a></div><div class="ttdeci">#define RAPIDJSON_ASSERT(x)</div><div class="ttdoc">Assertion.</div><div class="ttdef"><b>Definition:</b> rapidjson.h:437</div></div>
<div class="ttc" id="arapidjson_8h_html_abdc7cd7902748ffe6626d71c59a73c3b"><div class="ttname"><a href="rapidjson_8h.html#abdc7cd7902748ffe6626d71c59a73c3b">RAPIDJSON_NEW</a></div><div class="ttdeci">#define RAPIDJSON_NEW(TypeName)</div><div class="ttdoc">! customization point for global new</div><div class="ttdef"><b>Definition:</b> rapidjson.h:712</div></div>
<div class="ttc" id="arapidjson_8h_html_a52c941c3fdd646527cdcd42aa846a28a"><div class="ttname"><a href="rapidjson_8h.html#a52c941c3fdd646527cdcd42aa846a28a">RAPIDJSON_DELETE</a></div><div class="ttdeci">#define RAPIDJSON_DELETE(x)</div><div class="ttdoc">! customization point for global delete</div><div class="ttdef"><b>Definition:</b> rapidjson.h:716</div></div>
<div class="ttc" id="agroup___r_a_p_i_d_j_s_o_n___c_o_n_f_i_g_html_ga6a2b1695c13e77ae425e3cbac980ccb5"><div class="ttname"><a href="group___r_a_p_i_d_j_s_o_n___c_o_n_f_i_g.html#ga6a2b1695c13e77ae425e3cbac980ccb5">RAPIDJSON_UNLIKELY</a></div><div class="ttdeci">#define RAPIDJSON_UNLIKELY(x)</div><div class="ttdoc">Compiler branching hint for expression with low probability to be true.</div><div class="ttdef"><b>Definition:</b> rapidjson.h:507</div></div>
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