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<div class="title">stringbuffer.h</div> </div>
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<div class="contents">
<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. All rights reserved.</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_STRINGBUFFER_H_</span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span>&#160;<span class="preprocessor">#define RAPIDJSON_STRINGBUFFER_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;stream.h&quot;</span></div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span>&#160;<span class="preprocessor">#include &quot;internal/stack.h&quot;</span></div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span>&#160;</div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span>&#160;<span class="preprocessor">#if RAPIDJSON_HAS_CXX11_RVALUE_REFS</span></div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span>&#160;<span class="preprocessor">#include &lt;utility&gt;</span> <span class="comment">// std::move</span></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">#include &quot;internal/stack.h&quot;</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;<span class="preprocessor">#if defined(__clang__)</span></div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>&#160;RAPIDJSON_DIAG_PUSH</div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>&#160;RAPIDJSON_DIAG_OFF(c++98-compat)</div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>&#160;</div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>&#160;RAPIDJSON_NAMESPACE_BEGIN</div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>&#160;<span class="comment">//! Represents an in-memory output stream.</span></div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>&#160;<span class="comment"></span><span class="comment">/*!</span></div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>&#160;<span class="comment"> \tparam Encoding Encoding of the stream.</span></div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>&#160;<span class="comment"> \tparam Allocator type for allocating memory buffer.</span></div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>&#160;<span class="comment"> \note implements Stream concept</span></div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>&#160;<span class="comment">*/</span></div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> Encoding, <span class="keyword">typename</span> Allocator = CrtAllocator&gt;</div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>&#160;<span class="keyword">class </span>GenericStringBuffer {</div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>&#160;<span class="keyword">public</span>:</div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>&#160; <span class="keyword">typedef</span> <span class="keyword">typename</span> Encoding::Ch Ch;</div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>&#160;</div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>&#160; GenericStringBuffer(Allocator* allocator = 0, <span class="keywordtype">size_t</span> capacity = kDefaultCapacity) : stack_(allocator, capacity) {}</div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>&#160;</div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>&#160;<span class="preprocessor">#if RAPIDJSON_HAS_CXX11_RVALUE_REFS</span></div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>&#160; GenericStringBuffer(GenericStringBuffer&amp;&amp; rhs) : stack_(std::move(rhs.stack_)) {}</div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>&#160; GenericStringBuffer&amp; operator=(GenericStringBuffer&amp;&amp; rhs) {</div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>&#160; <span class="keywordflow">if</span> (&amp;rhs != <span class="keyword">this</span>)</div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>&#160; stack_ = std::move(rhs.stack_);</div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>&#160; <span class="keywordflow">return</span> *<span class="keyword">this</span>;</div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>&#160; }</div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>&#160;<span class="preprocessor">#endif</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="keywordtype">void</span> Put(Ch c) { *stack_.template Push&lt;Ch&gt;() = c; }</div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>&#160; <span class="keywordtype">void</span> <a class="code" href="namespacerapidjson.html#a0a774dcffe8ae07686f459ae017d2f20">PutUnsafe</a>(Ch c) { *stack_.template PushUnsafe&lt;Ch&gt;() = c; }</div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>&#160; <span class="keywordtype">void</span> Flush() {}</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="keywordtype">void</span> Clear() { stack_.Clear(); }</div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>&#160; <span class="keywordtype">void</span> ShrinkToFit() {</div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>&#160; <span class="comment">// Push and pop a null terminator. This is safe.</span></div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>&#160; *stack_.template Push&lt;Ch&gt;() = <span class="charliteral">&#39;\0&#39;</span>;</div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>&#160; stack_.ShrinkToFit();</div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>&#160; stack_.template Pop&lt;Ch&gt;(1);</div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>&#160; }</div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>&#160;</div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>&#160; <span class="keywordtype">void</span> Reserve(<span class="keywordtype">size_t</span> count) { stack_.template Reserve&lt;Ch&gt;(count); }</div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>&#160; Ch* Push(<span class="keywordtype">size_t</span> count) { <span class="keywordflow">return</span> stack_.template Push&lt;Ch&gt;(count); }</div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>&#160; <span class="keywordtype">void</span> Pop(<span class="keywordtype">size_t</span> count) { stack_.template Pop&lt;Ch&gt;(count); }</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; <span class="keyword">const</span> Ch* GetString()<span class="keyword"> const </span>{</div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>&#160; <span class="comment">// Push and pop a null terminator. This is safe.</span></div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>&#160; *stack_.template Push&lt;Ch&gt;() = <span class="charliteral">&#39;\0&#39;</span>;</div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>&#160; stack_.template Pop&lt;Ch&gt;(1);</div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>&#160;</div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>&#160; <span class="keywordflow">return</span> stack_.template Bottom&lt;Ch&gt;();</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;</div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>&#160; <span class="keywordtype">size_t</span> GetSize()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> stack_.GetSize(); }</div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>&#160;</div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>&#160; <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">size_t</span> kDefaultCapacity = 256;</div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>&#160; <span class="keyword">mutable</span> internal::Stack&lt;Allocator&gt; stack_;</div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>&#160;</div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>&#160;<span class="keyword">private</span>:</div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>&#160; <span class="comment">// Prohibit copy constructor &amp; assignment operator.</span></div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>&#160; GenericStringBuffer(<span class="keyword">const</span> GenericStringBuffer&amp;);</div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>&#160; GenericStringBuffer&amp; operator=(<span class="keyword">const</span> GenericStringBuffer&amp;);</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="comment"></span></div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>&#160;<span class="comment">//! String buffer with UTF8 encoding</span></div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>&#160;<span class="comment"></span><span class="keyword">typedef</span> GenericStringBuffer&lt;UTF8&lt;&gt; &gt; <a class="code" href="namespacerapidjson.html#ac0765ea91f41539645c4b78689d03f21">StringBuffer</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> Encoding, <span class="keyword">typename</span> Allocator&gt;</div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>&#160;<span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="namespacerapidjson.html#a820f77efccfbb749bd15fe4822d2c740">PutReserve</a>(GenericStringBuffer&lt;Encoding, Allocator&gt;&amp; stream, <span class="keywordtype">size_t</span> count) {</div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>&#160; stream.Reserve(count);</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="keyword">template</span>&lt;<span class="keyword">typename</span> Encoding, <span class="keyword">typename</span> Allocator&gt;</div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>&#160;<span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="namespacerapidjson.html#a0a774dcffe8ae07686f459ae017d2f20">PutUnsafe</a>(GenericStringBuffer&lt;Encoding, Allocator&gt;&amp; stream, <span class="keyword">typename</span> Encoding::Ch c) {</div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>&#160; stream.PutUnsafe(c);</div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>&#160;}</div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>&#160;<span class="comment">//! Implement specialized version of PutN() with memset() for better performance.</span></div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>&#160;<span class="comment"></span><span class="keyword">template</span>&lt;&gt;</div>
<div class="line"><a name="l00106"></a><span class="lineno"><a class="line" href="namespacerapidjson.html#a9d43be9c033dc49738b713fe6fbafecf"> 106</a></span>&#160;<span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="namespacerapidjson.html#a1ac13bac5976fc06587e00fc0bcfb32a">PutN</a>(<a class="code" href="classrapidjson_1_1_generic_string_buffer.html">GenericStringBuffer</a>&lt;<a class="code" href="structrapidjson_1_1_u_t_f8.html">UTF8&lt;&gt;</a> &gt;&amp; stream, <span class="keywordtype">char</span> c, <span class="keywordtype">size_t</span> n) {</div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>&#160; std::memset(stream.stack_.Push&lt;<span class="keywordtype">char</span>&gt;(n), c, n * <span class="keyword">sizeof</span>(c));</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;</div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>&#160;RAPIDJSON_NAMESPACE_END</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;<span class="preprocessor">#if defined(__clang__)</span></div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>&#160;RAPIDJSON_DIAG_POP</div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>&#160;</div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>&#160;<span class="preprocessor">#endif // RAPIDJSON_STRINGBUFFER_H_</span></div>
<div class="ttc" id="namespacerapidjson_html_a820f77efccfbb749bd15fe4822d2c740"><div class="ttname"><a href="namespacerapidjson.html#a820f77efccfbb749bd15fe4822d2c740">rapidjson::PutReserve</a></div><div class="ttdeci">void PutReserve(Stream &amp;stream, size_t count)</div><div class="ttdoc">Reserve n characters for writing to a stream. </div><div class="ttdef"><b>Definition:</b> stream.h:84</div></div>
<div class="ttc" id="classrapidjson_1_1_generic_string_buffer_html"><div class="ttname"><a href="classrapidjson_1_1_generic_string_buffer.html">rapidjson::GenericStringBuffer</a></div><div class="ttdoc">Represents an in-memory output stream. </div><div class="ttdef"><b>Definition:</b> fwd.h:59</div></div>
<div class="ttc" id="namespacerapidjson_html_ac0765ea91f41539645c4b78689d03f21"><div class="ttname"><a href="namespacerapidjson.html#ac0765ea91f41539645c4b78689d03f21">rapidjson::StringBuffer</a></div><div class="ttdeci">GenericStringBuffer&lt; UTF8&lt; char &gt;, CrtAllocator &gt; StringBuffer</div><div class="ttdoc">String buffer with UTF8 encoding. </div><div class="ttdef"><b>Definition:</b> fwd.h:59</div></div>
<div class="ttc" id="namespacerapidjson_html_a1ac13bac5976fc06587e00fc0bcfb32a"><div class="ttname"><a href="namespacerapidjson.html#a1ac13bac5976fc06587e00fc0bcfb32a">rapidjson::PutN</a></div><div class="ttdeci">void PutN(FileWriteStream &amp;stream, char c, size_t n)</div><div class="ttdoc">Implement specialized version of PutN() with memset() for better performance. </div><div class="ttdef"><b>Definition:</b> filewritestream.h:94</div></div>
<div class="ttc" id="structrapidjson_1_1_u_t_f8_html"><div class="ttname"><a href="structrapidjson_1_1_u_t_f8.html">rapidjson::UTF8</a></div><div class="ttdoc">UTF-8 encoding. </div><div class="ttdef"><b>Definition:</b> encodings.h:96</div></div>
<div class="ttc" id="namespacerapidjson_html_a0a774dcffe8ae07686f459ae017d2f20"><div class="ttname"><a href="namespacerapidjson.html#a0a774dcffe8ae07686f459ae017d2f20">rapidjson::PutUnsafe</a></div><div class="ttdeci">void PutUnsafe(Stream &amp;stream, typename Stream::Ch c)</div><div class="ttdoc">Write character to a stream, presuming buffer is reserved. </div><div class="ttdef"><b>Definition:</b> stream.h:91</div></div>
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