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<div id="projectname">Templates -- Meow
 <span id="projectnumber">1.1.2</span>
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<div id="projectbrief">不能,也不應該先編譯成obj-file的templates</div>
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<div class="title">Self.h</div> </div>
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<a href="Self_8h.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="preprocessor">#ifndef Self_h__</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="preprocessor"></span><span class="preprocessor">#define Self_h__</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="preprocessor">#include <cstdlib></span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> </div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="keyword">namespace </span>meow {</div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> </div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span> <span class="keyword">template</span><<span class="keyword">class</span> Data></div>
<div class="line"><a name="l00069"></a><span class="lineno"><a class="code" href="classmeow_1_1Self.html"> 69</a></span> <span class="keyword">class </span><a class="code" href="classmeow_1_1Self.html" title="具有copy on write, 且擁有比C++更靈活的reference機制">Self</a> {</div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span> <span class="keyword">private</span>:</div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  <span class="keyword">class </span>Body {</div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  <span class="keyword">private</span>:</div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  <span class="keyword">struct </span>Kernel {</div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  Data data_;</div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  <span class="keywordtype">int</span> counter_;</div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  Kernel() {</div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  counter_ = 1;</div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  }</div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  Kernel(Data <span class="keyword">const</span>& data) {</div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  counter_ = 1;</div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  data_.<a class="code" href="classmeow_1_1Self.html#a7ae7da730705bf2330a259308e5a6828" title="將給定的 Self 的資料複製到自己這裡">copyFrom</a>(data);</div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  }</div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  };</div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  Kernel *pointer_;</div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  <span class="keywordtype">int</span> counter_;</div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  <span class="keyword">public</span>:</div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  Body() {</div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  counter_ = 1;</div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  pointer_ = <span class="keyword">new</span> Kernel;</div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  }</div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  Body(Body <span class="keyword">const</span>& b) {</div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  counter_ = 1;</div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  pointer_ = b.pointer_;</div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  pointer_->counter_++;</div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  }</div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  ~Body() {</div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  pointer_->counter_--;</div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  <span class="keywordflow">if</span> (pointer_->counter_ <= 0) {</div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  <span class="keyword">delete</span> pointer_;</div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  }</div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  }</div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  <span class="keywordtype">int</span> attatch() { <span class="keywordflow">return</span> ++counter_; }</div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  <span class="keywordtype">int</span> detatch() { <span class="keywordflow">return</span> --counter_; }</div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  Data <span class="keyword">const</span>* access()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> &(pointer_->data_); }</div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  Data * modify() {</div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  <span class="keywordflow">if</span> (pointer_->counter_ > 1) {</div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  pointer_->counter_--;</div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  pointer_ = <span class="keyword">new</span> Kernel(pointer_->data_);</div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  }</div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  <span class="keywordflow">return</span> &(pointer_->data_);</div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  }</div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  };</div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  Body* body_;</div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  </div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  <span class="keywordtype">void</span> clear(Body* body) {</div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  <span class="keywordflow">if</span> (body != NULL) {</div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  <span class="keywordflow">if</span> (body->detatch() <= 0) {</div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  <span class="keyword">delete</span> body;</div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  }</div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  }</div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  }</div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span> <span class="keyword">public</span>:</div>
<div class="line"><a name="l00130"></a><span class="lineno"><a class="code" href="classmeow_1_1Self.html#a0db7c98f250aeee3b06a49ebe0f16937"> 130</a></span>  <a class="code" href="classmeow_1_1Self.html#a0db7c98f250aeee3b06a49ebe0f16937" title="constructor">Self</a>(<span class="keywordtype">bool</span> create_body) {</div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  body_ = (create_body ? <span class="keyword">new</span> Body() : NULL);</div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  }</div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  </div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  <a class="code" href="classmeow_1_1Self.html#a0db7c98f250aeee3b06a49ebe0f16937" title="constructor">Self</a>(<a class="code" href="classmeow_1_1Self.html" title="具有copy on write, 且擁有比C++更靈活的reference機制">Self</a> <span class="keyword">const</span>& b);</div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  </div>
<div class="line"><a name="l00138"></a><span class="lineno"><a class="code" href="classmeow_1_1Self.html#ada16564a03665b10810a6342d61044bc"> 138</a></span>  <a class="code" href="classmeow_1_1Self.html#ada16564a03665b10810a6342d61044bc" title="解構子">~Self</a>() {</div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  clear(body_);</div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  }</div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  </div>
<div class="line"><a name="l00143"></a><span class="lineno"><a class="code" href="classmeow_1_1Self.html#a6063551c3e6ac647500e938ade8fbc99"> 143</a></span>  Data <span class="keyword">const</span>* <a class="code" href="classmeow_1_1Self.html#a6063551c3e6ac647500e938ade8fbc99" title="回傳指向 Data const 的指標">operator-></a>()<span class="keyword"> const </span>{</div>
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  <span class="keywordflow">return</span> body_->access();</div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  }</div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  </div>
<div class="line"><a name="l00148"></a><span class="lineno"><a class="code" href="classmeow_1_1Self.html#ace312355261c68ac7531767939f5c4c2"> 148</a></span>  Data* <a class="code" href="classmeow_1_1Self.html#ace312355261c68ac7531767939f5c4c2" title="回傳指向 Data 的指標, 如有需要, 這邊會做資料的duplicate">operator-></a>() {</div>
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  <span class="keywordflow">return</span> body_->modify();</div>
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  }</div>
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  </div>
<div class="line"><a name="l00153"></a><span class="lineno"><a class="code" href="classmeow_1_1Self.html#a5962339e9ee49312ab770f1119256ca6"> 153</a></span>  <a class="code" href="classmeow_1_1Self.html" title="具有copy on write, 且擁有比C++更靈活的reference機制">Self</a>& <a class="code" href="classmeow_1_1Self.html#a5962339e9ee49312ab770f1119256ca6" title="回傳非const型態的自己">operator()</a>()<span class="keyword"> const </span>{</div>
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  <span class="keywordflow">return</span> *((<a class="code" href="classmeow_1_1Self.html" title="具有copy on write, 且擁有比C++更靈活的reference機制">Self</a>*)<span class="keyword">this</span>);</div>
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  }</div>
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  </div>
<div class="line"><a name="l00166"></a><span class="lineno"><a class="code" href="classmeow_1_1Self.html#a7ae7da730705bf2330a259308e5a6828"> 166</a></span>  <span class="keywordtype">void</span> <a class="code" href="classmeow_1_1Self.html#a7ae7da730705bf2330a259308e5a6828" title="將給定的 Self 的資料複製到自己這裡">copyFrom</a>(<a class="code" href="classmeow_1_1Self.html" title="具有copy on write, 且擁有比C++更靈活的reference機制">Self</a> <span class="keyword">const</span>& s) {</div>
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  Body* old = body_;</div>
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  body_ = <span class="keyword">new</span> Body(*(s.body_));</div>
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  clear(old);</div>
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  }</div>
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  </div>
<div class="line"><a name="l00183"></a><span class="lineno"><a class="code" href="classmeow_1_1Self.html#a576e99ba0ba6e8263b4d2cfd9238440f"> 183</a></span>  <span class="keywordtype">void</span> <a class="code" href="classmeow_1_1Self.html#a576e99ba0ba6e8263b4d2cfd9238440f" title="將自己reference 到給定的 Self ">referenceFrom</a>(<a class="code" href="classmeow_1_1Self.html" title="具有copy on write, 且擁有比C++更靈活的reference機制">Self</a> <span class="keyword">const</span>& s) {</div>
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  <span class="keywordflow">if</span> (body_ != s.body_) {</div>
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  clear(body_);</div>
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  body_ = s.body_;</div>
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  body_->attatch();</div>
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  }</div>
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  }</div>
<div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  </div>
<div class="line"><a name="l00197"></a><span class="lineno"><a class="code" href="classmeow_1_1Self.html#ab3671e44693b79e2f987f59652d46ca9"> 197</a></span>  <span class="keywordtype">bool</span> <a class="code" href="classmeow_1_1Self.html#ab3671e44693b79e2f987f59652d46ca9" title="比對兩個 Self 是否指向同一個reference">same</a>(<a class="code" href="classmeow_1_1Self.html" title="具有copy on write, 且擁有比C++更靈活的reference機制">Self</a> <span class="keyword">const</span>& s)<span class="keyword"> const </span>{</div>
<div class="line"><a name="l00198"></a><span class="lineno"> 198</span>  <span class="keywordflow">return</span> (body_ == s.body_);</div>
<div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  }</div>
<div class="line"><a name="l00200"></a><span class="lineno"> 200</span>  </div>
<div class="line"><a name="l00209"></a><span class="lineno"><a class="code" href="classmeow_1_1Self.html#a91098e2218c358470e81d64f35d6491d"> 209</a></span>  <span class="keywordtype">bool</span> <a class="code" href="classmeow_1_1Self.html#a91098e2218c358470e81d64f35d6491d" title="比對兩個 Self 的內容是否一樣">equal</a>(<a class="code" href="classmeow_1_1Self.html" title="具有copy on write, 且擁有比C++更靈活的reference機制">Self</a> <span class="keyword">const</span>& s)<span class="keyword"> const </span>{</div>
<div class="line"><a name="l00210"></a><span class="lineno"> 210</span>  <span class="keywordflow">if</span> (<a class="code" href="classmeow_1_1Self.html#ab3671e44693b79e2f987f59652d46ca9" title="比對兩個 Self 是否指向同一個reference">same</a>(s) || body_->access() == s.body_->access()) <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  <span class="keywordflow">return</span> (body_->access()->equal(*(s.body_->access())));</div>
<div class="line"><a name="l00212"></a><span class="lineno"> 212</span>  }</div>
<div class="line"><a name="l00213"></a><span class="lineno"> 213</span>  </div>
<div class="line"><a name="l00220"></a><span class="lineno"><a class="code" href="classmeow_1_1Self.html#a10f22a83c3afcf65f8f9680f2a2f945c"> 220</a></span>  <span class="keywordtype">bool</span> <a class="code" href="classmeow_1_1Self.html#a10f22a83c3afcf65f8f9680f2a2f945c" title="以reference作為判斷依據的小於判斷">referenceLess</a>(<a class="code" href="classmeow_1_1Self.html" title="具有copy on write, 且擁有比C++更靈活的reference機制">Self</a> <span class="keyword">const</span>& s)<span class="keyword"> const </span>{</div>
<div class="line"><a name="l00221"></a><span class="lineno"> 221</span>  <span class="keywordflow">return</span> (body_ < s.body_);</div>
<div class="line"><a name="l00222"></a><span class="lineno"> 222</span>  }</div>
<div class="line"><a name="l00223"></a><span class="lineno"> 223</span>  </div>
<div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  <span class="keywordtype">void</span> <a class="code" href="classmeow_1_1Self.html#af3277e1109c59e5f81549889b344a675" title="將 operator= 給disable掉">operator=</a>(<a class="code" href="classmeow_1_1Self.html" title="具有copy on write, 且擁有比C++更靈活的reference機制">Self</a> <span class="keyword">const</span>& a);</div>
<div class="line"><a name="l00226"></a><span class="lineno"> 226</span> };</div>
<div class="line"><a name="l00227"></a><span class="lineno"> 227</span> </div>
<div class="line"><a name="l00228"></a><span class="lineno"> 228</span> } <span class="comment">// meow</span></div>
<div class="line"><a name="l00229"></a><span class="lineno"> 229</span> </div>
<div class="line"><a name="l00230"></a><span class="lineno"> 230</span> <span class="preprocessor">#endif // Self_h__</span></div>
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