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著名的密码库Crypto++的文档 C++语言的杰作。程序员必备。

<a name="l00077"></a>00077 
<a name="l00078"></a>00078 <span class="keyword">private</span>:
<a name="l00079"></a>00079         <span class="keyword">const</span> <a class="code" href="class_name_value_pairs.html" title="interface for retrieving values given their names">NameValuePairs</a> &amp;m_pairs1, &amp;m_pairs2;
<a name="l00080"></a>00080 };
<a name="l00081"></a>00081 
<a name="l00082"></a>00082 <span class="keyword">template</span> &lt;<span class="keyword">class</span> T, <span class="keyword">class</span> BASE&gt;
<a name="l00083"></a><a class="code" href="class_get_value_helper_class.html">00083</a> <span class="keyword">class </span><a class="code" href="class_get_value_helper_class.html">GetValueHelperClass</a>
<a name="l00084"></a>00084 {
<a name="l00085"></a>00085 <span class="keyword">public</span>:
<a name="l00086"></a><a class="code" href="class_get_value_helper_class.html#c9e1b57dc7e82e22f7add4ebfdaa17f6">00086</a>         <a class="code" href="class_get_value_helper_class.html#c9e1b57dc7e82e22f7add4ebfdaa17f6">GetValueHelperClass</a>(<span class="keyword">const</span> T *pObject, <span class="keyword">const</span> <span class="keywordtype">char</span> *name, <span class="keyword">const</span> std::type_info &amp;valueType, <span class="keywordtype">void</span> *pValue, <span class="keyword">const</span> <a class="code" href="class_name_value_pairs.html" title="interface for retrieving values given their names">NameValuePairs</a> *searchFirst)
<a name="l00087"></a>00087                 : m_pObject(pObject), m_name(name), m_valueType(&amp;valueType), m_pValue(pValue), m_found(false), m_getValueNames(false)
<a name="l00088"></a>00088         {
<a name="l00089"></a>00089                 <span class="keywordflow">if</span> (strcmp(m_name, <span class="stringliteral">"ValueNames"</span>) == 0)
<a name="l00090"></a>00090                 {
<a name="l00091"></a>00091                         m_found = m_getValueNames = <span class="keyword">true</span>;
<a name="l00092"></a>00092                         <a class="code" href="class_name_value_pairs.html#a50a73b1705adb00ace9463b59696fb7" title="used by derived classes to check for type mismatch">NameValuePairs::ThrowIfTypeMismatch</a>(m_name, <span class="keyword">typeid</span>(std::string), *m_valueType);
<a name="l00093"></a>00093                         <span class="keywordflow">if</span> (searchFirst)
<a name="l00094"></a>00094                                 searchFirst-&gt;<a class="code" href="class_name_value_pairs.html#9fc3f5c4480d53b8104c67ca7958e332" title="to be implemented by derived classes, users should use one of the above functions...">GetVoidValue</a>(m_name, valueType, pValue);
<a name="l00095"></a>00095                         <span class="keywordflow">if</span> (<span class="keyword">typeid</span>(T) != <span class="keyword">typeid</span>(BASE))
<a name="l00096"></a>00096                                 pObject-&gt;BASE::GetVoidValue(m_name, valueType, pValue);
<a name="l00097"></a>00097                         ((*<span class="keyword">reinterpret_cast&lt;</span>std::string *<span class="keyword">&gt;</span>(m_pValue) += <span class="stringliteral">"ThisPointer:"</span>) += <span class="keyword">typeid</span>(T).name()) += <span class="charliteral">';'</span>;
<a name="l00098"></a>00098                 }
<a name="l00099"></a>00099 
<a name="l00100"></a>00100                 <span class="keywordflow">if</span> (!m_found &amp;&amp; strncmp(m_name, <span class="stringliteral">"ThisPointer:"</span>, 12) == 0 &amp;&amp; strcmp(m_name+12, <span class="keyword">typeid</span>(T).name()) == 0)
<a name="l00101"></a>00101                 {
<a name="l00102"></a>00102                         <a class="code" href="class_name_value_pairs.html#a50a73b1705adb00ace9463b59696fb7" title="used by derived classes to check for type mismatch">NameValuePairs::ThrowIfTypeMismatch</a>(m_name, <span class="keyword">typeid</span>(T *), *m_valueType);
<a name="l00103"></a>00103                         *<span class="keyword">reinterpret_cast&lt;</span><span class="keyword">const </span>T **<span class="keyword">&gt;</span>(pValue) = pObject;
<a name="l00104"></a>00104                         m_found = <span class="keyword">true</span>;
<a name="l00105"></a>00105                         <span class="keywordflow">return</span>;
<a name="l00106"></a>00106                 }
<a name="l00107"></a>00107 
<a name="l00108"></a>00108                 <span class="keywordflow">if</span> (!m_found &amp;&amp; searchFirst)
<a name="l00109"></a>00109                         m_found = searchFirst-&gt;<a class="code" href="class_name_value_pairs.html#9fc3f5c4480d53b8104c67ca7958e332" title="to be implemented by derived classes, users should use one of the above functions...">GetVoidValue</a>(m_name, valueType, pValue);
<a name="l00110"></a>00110                 
<a name="l00111"></a>00111                 <span class="keywordflow">if</span> (!m_found &amp;&amp; <span class="keyword">typeid</span>(T) != <span class="keyword">typeid</span>(BASE))
<a name="l00112"></a>00112                         m_found = pObject-&gt;BASE::GetVoidValue(m_name, valueType, pValue);
<a name="l00113"></a>00113         }
<a name="l00114"></a>00114 
<a name="l00115"></a><a class="code" href="class_get_value_helper_class.html#8dd9501d99842ae505435d614f9d6ee8">00115</a>         <a class="code" href="class_get_value_helper_class.html#8dd9501d99842ae505435d614f9d6ee8">operator bool</a>()<span class="keyword"> const </span>{<span class="keywordflow">return</span> m_found;}
<a name="l00116"></a>00116 
<a name="l00117"></a>00117         <span class="keyword">template</span> &lt;<span class="keyword">class</span> R&gt;
<a name="l00118"></a><a class="code" href="class_get_value_helper_class.html#0604b4c8135d6c301fe1a6414ebac2bc">00118</a>         <a class="code" href="class_get_value_helper_class.html">GetValueHelperClass&lt;T,BASE&gt;</a> &amp; <a class="code" href="class_get_value_helper_class.html#0604b4c8135d6c301fe1a6414ebac2bc">operator()</a>(<span class="keyword">const</span> <span class="keywordtype">char</span> *name, <span class="keyword">const</span> R &amp; (T::*pm)() <span class="keyword">const</span>)
<a name="l00119"></a>00119         {
<a name="l00120"></a>00120                 <span class="keywordflow">if</span> (m_getValueNames)
<a name="l00121"></a>00121                         (*<span class="keyword">reinterpret_cast&lt;</span>std::string *<span class="keyword">&gt;</span>(m_pValue) += name) += <span class="stringliteral">";"</span>;
<a name="l00122"></a>00122                 <span class="keywordflow">if</span> (!m_found &amp;&amp; strcmp(name, m_name) == 0)
<a name="l00123"></a>00123                 {
<a name="l00124"></a>00124                         <a class="code" href="class_name_value_pairs.html#a50a73b1705adb00ace9463b59696fb7" title="used by derived classes to check for type mismatch">NameValuePairs::ThrowIfTypeMismatch</a>(name, <span class="keyword">typeid</span>(R), *m_valueType);
<a name="l00125"></a>00125                         *<span class="keyword">reinterpret_cast&lt;</span>R *<span class="keyword">&gt;</span>(m_pValue) = (m_pObject-&gt;*pm)();
<a name="l00126"></a>00126                         m_found = <span class="keyword">true</span>;
<a name="l00127"></a>00127                 }
<a name="l00128"></a>00128                 <span class="keywordflow">return</span> *<span class="keyword">this</span>;
<a name="l00129"></a>00129         }
<a name="l00130"></a>00130 
<a name="l00131"></a><a class="code" href="class_get_value_helper_class.html#eac7c76df217ccdab37359d399b76355">00131</a>         <a class="code" href="class_get_value_helper_class.html">GetValueHelperClass&lt;T,BASE&gt;</a> &amp;<a class="code" href="class_get_value_helper_class.html#eac7c76df217ccdab37359d399b76355">Assignable</a>()
<a name="l00132"></a>00132         {
<a name="l00133"></a>00133 <span class="preprocessor">#ifndef __INTEL_COMPILER        // ICL 9.1 workaround: Intel compiler copies the vTable pointer for some reason</span>
<a name="l00134"></a>00134 <span class="preprocessor"></span>                <span class="keywordflow">if</span> (m_getValueNames)
<a name="l00135"></a>00135                         ((*<span class="keyword">reinterpret_cast&lt;</span>std::string *<span class="keyword">&gt;</span>(m_pValue) += <span class="stringliteral">"ThisObject:"</span>) += <span class="keyword">typeid</span>(T).name()) += <span class="charliteral">';'</span>;
<a name="l00136"></a>00136                 <span class="keywordflow">if</span> (!m_found &amp;&amp; strncmp(m_name, <span class="stringliteral">"ThisObject:"</span>, 11) == 0 &amp;&amp; strcmp(m_name+11, <span class="keyword">typeid</span>(T).name()) == 0)
<a name="l00137"></a>00137                 {
<a name="l00138"></a>00138                         <a class="code" href="class_name_value_pairs.html#a50a73b1705adb00ace9463b59696fb7" title="used by derived classes to check for type mismatch">NameValuePairs::ThrowIfTypeMismatch</a>(m_name, <span class="keyword">typeid</span>(T), *m_valueType);
<a name="l00139"></a>00139                         *<span class="keyword">reinterpret_cast&lt;</span>T *<span class="keyword">&gt;</span>(m_pValue) = *m_pObject;
<a name="l00140"></a>00140                         m_found = <span class="keyword">true</span>;
<a name="l00141"></a>00141                 }
<a name="l00142"></a>00142 <span class="preprocessor">#endif</span>
<a name="l00143"></a>00143 <span class="preprocessor"></span>                <span class="keywordflow">return</span> *<span class="keyword">this</span>;
<a name="l00144"></a>00144         }
<a name="l00145"></a>00145 
<a name="l00146"></a>00146 <span class="keyword">private</span>:
<a name="l00147"></a>00147         <span class="keyword">const</span> T *m_pObject;
<a name="l00148"></a>00148         <span class="keyword">const</span> <span class="keywordtype">char</span> *m_name;
<a name="l00149"></a>00149         <span class="keyword">const</span> std::type_info *m_valueType;
<a name="l00150"></a>00150         <span class="keywordtype">void</span> *m_pValue;
<a name="l00151"></a>00151         <span class="keywordtype">bool</span> m_found, m_getValueNames;
<a name="l00152"></a>00152 };
<a name="l00153"></a>00153 
<a name="l00154"></a>00154 <span class="keyword">template</span> &lt;<span class="keyword">class</span> BASE, <span class="keyword">class</span> T&gt;
<a name="l00155"></a>00155 <a class="code" href="class_get_value_helper_class.html">GetValueHelperClass&lt;T, BASE&gt;</a> GetValueHelper(<span class="keyword">const</span> T *pObject, <span class="keyword">const</span> <span class="keywordtype">char</span> *name, <span class="keyword">const</span> std::type_info &amp;valueType, <span class="keywordtype">void</span> *pValue, <span class="keyword">const</span> <a class="code" href="class_name_value_pairs.html" title="interface for retrieving values given their names">NameValuePairs</a> *searchFirst=NULL, BASE *dummy=NULL)
<a name="l00156"></a>00156 {
<a name="l00157"></a>00157         <span class="keywordflow">return</span> <a class="code" href="class_get_value_helper_class.html">GetValueHelperClass&lt;T, BASE&gt;</a>(pObject, name, valueType, pValue, searchFirst);
<a name="l00158"></a>00158 }
<a name="l00159"></a>00159 
<a name="l00160"></a>00160 <span class="keyword">template</span> &lt;<span class="keyword">class</span> T&gt;
<a name="l00161"></a>00161 <a class="code" href="class_get_value_helper_class.html">GetValueHelperClass&lt;T, T&gt;</a> GetValueHelper(<span class="keyword">const</span> T *pObject, <span class="keyword">const</span> <span class="keywordtype">char</span> *name, <span class="keyword">const</span> std::type_info &amp;valueType, <span class="keywordtype">void</span> *pValue, <span class="keyword">const</span> <a class="code" href="class_name_value_pairs.html" title="interface for retrieving values given their names">NameValuePairs</a> *searchFirst=NULL)
<a name="l00162"></a>00162 {
<a name="l00163"></a>00163         <span class="keywordflow">return</span> <a class="code" href="class_get_value_helper_class.html">GetValueHelperClass&lt;T, T&gt;</a>(pObject, name, valueType, pValue, searchFirst);
<a name="l00164"></a>00164 }
<a name="l00165"></a>00165 
<a name="l00166"></a>00166 <span class="comment">// ********************************************************</span>
<a name="l00167"></a>00167 
<a name="l00168"></a>00168 <span class="keyword">template</span> &lt;<span class="keyword">class</span> R&gt;
<a name="l00169"></a>00169 R Hack_DefaultValueFromConstReferenceType(<span class="keyword">const</span> R &amp;)
<a name="l00170"></a>00170 {
<a name="l00171"></a>00171         <span class="keywordflow">return</span> R();
<a name="l00172"></a>00172 }
<a name="l00173"></a>00173