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<a href="icptrholder__cxx_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>  </div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span> <span class="preprocessor">#ifndef ICPTRHOLDER_CXX_H</span></div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span> <span class="preprocessor">#define ICPTRHOLDER_CXX_H</span></div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  </div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span> <span class="preprocessor">#include <cassert></span></div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  </div>
<div class="line"><a name="l00047"></a><span class="lineno"><a class="line" href="classICPointerHolder.html"> 47</a></span> <span class="keyword">template</span> < <span class="keyword">class</span> T > <span class="keyword">class </span><a class="code" href="classICPointerHolder.html">ICPointerHolder</a></div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span> {</div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span> <span class="keyword">public</span>:</div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  <a class="code" href="classICPointerHolder.html">ICPointerHolder</a>()</div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  : ptr(0)</div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  {</div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  }</div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  </div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <a class="code" href="classICPointerHolder.html">ICPointerHolder</a>(T *p)</div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  : ptr(p)</div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  {</div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  }</div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  </div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  <span class="comment">// copy constructor to support assignment</span></div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  <a class="code" href="classICPointerHolder.html">ICPointerHolder</a>(<span class="keyword">const</span> <a class="code" href="classICPointerHolder.html">ICPointerHolder</a> &ip)</div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  : ptr(ip.ptr)</div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  {</div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  <span class="comment">// We need to transfer ownership of ptr to this object by setting</span></div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  <span class="comment">// ip's ptr to null. Otherwise, ptr will de deleted twice.</span></div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  <span class="comment">// const ugliness requires us to do the const_cast.</span></div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  <a class="code" href="classICPointerHolder.html">ICPointerHolder</a> *ipp = <span class="keyword">const_cast <</span> <a class="code" href="classICPointerHolder.html">ICPointerHolder</a> * <span class="keyword">></span>(&ip);</div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  </div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  ipp->ptr = 0;</div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  };</div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  </div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  ~<a class="code" href="classICPointerHolder.html">ICPointerHolder</a>()</div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  {</div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  release();</div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  }</div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  </div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  <a class="code" href="classICPointerHolder.html">ICPointerHolder</a> &operator=(T *p)</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>  this->release();</div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  ptr = p;</div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  <span class="keywordflow">return</span> *<span class="keyword">this</span>;</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>  <a class="code" href="classICPointerHolder.html">ICPointerHolder</a> &operator=(<a class="code" href="classICPointerHolder.html">ICPointerHolder</a> &p)</div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  {</div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  this->release();</div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  ptr = p.ptr; <span class="comment">// this transfer ownership of the pointer</span></div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  p.ptr = 0; <span class="comment">// set it to null so the pointer won't get delete twice.</span></div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  <span class="keywordflow">return</span> *<span class="keyword">this</span>;</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>  </div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  <span class="keywordtype">bool</span> operator!=(T *p)</div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  {</div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  <span class="keywordflow">return</span> (ptr != p);</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>  </div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  <span class="keywordtype">bool</span> operator==(T *p)</div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  {</div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  <span class="keywordflow">return</span> (ptr == p);</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="keyword">operator</span> T *() <span class="keyword">const</span></div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  {</div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  <span class="keywordflow">return</span> ptr;</div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  }</div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  </div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  T *operator->()<span class="keyword"> const</span></div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span> <span class="keyword"> </span>{</div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  assert(ptr);</div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  <span class="keywordflow">return</span> ptr;</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>  T &operator*()</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>  assert(ptr);</div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  <span class="keywordflow">return</span> *ptr;</div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  }</div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  </div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span> <span class="keyword">private</span>:</div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  <span class="keywordtype">void</span> release()</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="keywordflow">if</span> (ptr != 0) {</div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  ptr->detach();</div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  <span class="keyword">delete</span> ptr;</div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  </div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  ptr = 0;</div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  }</div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  }</div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  </div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  T *ptr;</div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span> };</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> <span class="preprocessor">#endif</span></div>
<div class="ttc" id="aclassICPointerHolder_html"><div class="ttname"><a href="classICPointerHolder.html">ICPointerHolder</a></div><div class="ttdef"><b>Definition:</b> icptrholder_cxx.h:48</div></div>
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