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   4 <title>Class template channel_severity_filter_terminal</title>
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  19 <a name="boost.log.expressions.channel__idm45711347468608"></a><div class="titlepage"></div>
  20 <div class="refnamediv">
  21 <h2><span class="refentrytitle">Class template channel_severity_filter_terminal</span></h2>
  22 <p>boost::log::expressions::channel_severity_filter_terminal</p>
  23 </div>
  24 <h2 xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv-title">Synopsis</h2>
  25 <div xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv"><pre class="synopsis"><span class="comment">// In header: &lt;<a class="link" href="../../../expressions.html#header.boost.log.expressions.predicates.channel_severity_filter_hpp" title="Header &lt;boost/log/expressions/predicates/channel_severity_filter.hpp&gt;">boost/log/expressions/predicates/channel_severity_filter.hpp</a>&gt;
  26
  27 </span><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> ChannelT<span class="special">,</span> <span class="keyword">typename</span> SeverityT<span class="special">,</span>
  28          <span class="keyword">typename</span> ChannelFallbackT <span class="special">=</span> <span class="identifier">fallback_to_none</span><span class="special">,</span>
  29          <span class="keyword">typename</span> SeverityFallbackT <span class="special">=</span> <span class="identifier">fallback_to_none</span><span class="special">,</span>
  30          <span class="keyword">typename</span> ChannelOrderT <span class="special">=</span> <span class="identifier">less</span><span class="special">,</span>
  31          <span class="keyword">typename</span> SeverityCompareT <span class="special">=</span> <span class="identifier">greater_equal</span><span class="special">,</span>
  32          <span class="keyword">typename</span> AllocatorT <span class="special">=</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">allocator</span><span class="special">&lt;</span> <span class="keyword">void</span> <span class="special">&gt;</span> <span class="special">&gt;</span>
  33 <span class="keyword">class</span> <a class="link" href="channel__idm45711347468608.html" title="Class template channel_severity_filter_terminal">channel_severity_filter_terminal</a> <span class="special">{</span>
  34 <span class="keyword">public</span><span class="special">:</span>
  35   <span class="comment">// types</span>
  36   <span class="keyword">typedef</span> <span class="keyword">bool</span>              <a name="boost.log.expressions.channel__idm45711347468608.result_type"></a><span class="identifier">result_type</span><span class="special">;</span>               <span class="comment">// Function result type. </span>
  37   <span class="keyword">typedef</span> <span class="identifier">ChannelT</span>          <a name="boost.log.expressions.channel__idm45711347468608.channel_value_type"></a><span class="identifier">channel_value_type</span><span class="special">;</span>        <span class="comment">// Channel attribute value type. </span>
  38   <span class="keyword">typedef</span> <span class="identifier">ChannelFallbackT</span>  <a name="boost.log.expressions.channel__idm45711347468608.channel_fallback_policy"></a><span class="identifier">channel_fallback_policy</span><span class="special">;</span>   <span class="comment">// Channel fallback policy. </span>
  39   <span class="keyword">typedef</span> <span class="identifier">SeverityT</span>         <a name="boost.log.expressions.channel__idm45711347468608.severity_value_type"></a><span class="identifier">severity_value_type</span><span class="special">;</span>       <span class="comment">// Severity level attribute value type. </span>
  40   <span class="keyword">typedef</span> <span class="identifier">SeverityFallbackT</span> <a name="boost.log.expressions.channel__idm45711347468608.severity_fallback_policy"></a><span class="identifier">severity_fallback_policy</span><span class="special">;</span>  <span class="comment">// Severity level fallback policy. </span>
  41
  42   <span class="comment">// member classes/structs/unions</span>
  43
  44   <span class="comment">// Channel visitor.</span>
  45   <span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> ArgT<span class="special">&gt;</span>
  46   <span class="keyword">struct</span> <a class="link" href="channel__idm45711347468608/channel_visitor.html" title="Struct template channel_visitor">channel_visitor</a> <span class="special">{</span>
  47     <span class="comment">// types</span>
  48     <span class="keyword">typedef</span> <span class="keyword">void</span> <a class="link" href="channel__idm45711347468608/channel_visitor.html#boost.log.expressions.channel__idm45711347468608.channel_visitor.result_type"><span class="identifier">result_type</span></a><span class="special">;</span>
  49
  50     <span class="comment">// <a class="link" href="channel__idm45711347468608/channel_visitor.html#boost.log.expressions.channel__idm45711347468608.channel_visitorconstruct-copy-destruct">construct/copy/destruct</a></span>
  51     <a class="link" href="channel__idm45711347468608/channel_visitor.html#idm45711347457616-bb"><span class="identifier">channel_visitor</span></a><span class="special">(</span><span class="identifier">channel_severity_filter_terminal</span> <span class="keyword">const</span> <span class="special">&amp;</span><span class="special">,</span> <span class="identifier">ArgT</span><span class="special">,</span> <span class="keyword">bool</span> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
  52
  53     <span class="comment">// <a class="link" href="channel__idm45711347468608/channel_visitor.html#idm45711347460160-bb">public member functions</a></span>
  54     <span class="identifier">result_type</span> <a class="link" href="channel__idm45711347468608/channel_visitor.html#idm45711347459600-bb"><span class="keyword">operator</span><span class="special">(</span><span class="special">)</span></a><span class="special">(</span><span class="identifier">channel_value_type</span> <span class="keyword">const</span> <span class="special">&amp;</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  55   <span class="special">}</span><span class="special">;</span>
  56
  57   <span class="comment">// Severity level visitor.</span>
  58
  59   <span class="keyword">struct</span> <a class="link" href="channel__idm45711347468608/severity_visitor.html" title="Struct severity_visitor">severity_visitor</a> <span class="special">{</span>
  60     <span class="comment">// types</span>
  61     <span class="keyword">typedef</span> <span class="keyword">void</span> <a class="link" href="channel__idm45711347468608/severity_visitor.html#boost.log.expressions.channel__idm45711347468608.severity_visitor.result_type"><span class="identifier">result_type</span></a><span class="special">;</span>
  62
  63     <span class="comment">// <a class="link" href="channel__idm45711347468608/severity_visitor.html#boost.log.expressions.channel__idm45711347468608.severity_visitorconstruct-copy-destruct">construct/copy/destruct</a></span>
  64     <a class="link" href="channel__idm45711347468608/severity_visitor.html#idm45711347451136-bb"><span class="identifier">severity_visitor</span></a><span class="special">(</span><span class="identifier">channel_severity_filter_terminal</span> <span class="keyword">const</span> <span class="special">&amp;</span><span class="special">,</span>
  65                      <span class="identifier">severity_value_type</span> <span class="keyword">const</span> <span class="special">&amp;</span><span class="special">,</span> <span class="keyword">bool</span> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
  66
  67     <span class="comment">// <a class="link" href="channel__idm45711347468608/severity_visitor.html#idm45711347453680-bb">public member functions</a></span>
  68     <span class="identifier">result_type</span> <a class="link" href="channel__idm45711347468608/severity_visitor.html#idm45711347453120-bb"><span class="keyword">operator</span><span class="special">(</span><span class="special">)</span></a><span class="special">(</span><span class="identifier">severity_value_type</span> <span class="keyword">const</span> <span class="special">&amp;</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  69   <span class="special">}</span><span class="special">;</span>
  70
  71   <span class="comment">// <a class="link" href="channel__idm45711347468608.html#boost.log.expressions.channel__idm45711347468608construct-copy-destruct">construct/copy/destruct</a></span>
  72   <a class="link" href="channel__idm45711347468608.html#idm45711347434896-bb"><span class="identifier">channel_severity_filter_terminal</span></a><span class="special">(</span><span class="identifier">attribute_name</span> <span class="keyword">const</span> <span class="special">&amp;</span><span class="special">,</span>
  73                                    <span class="identifier">attribute_name</span> <span class="keyword">const</span> <span class="special">&amp;</span><span class="special">,</span>
  74                                    <span class="identifier">channel_fallback_policy</span> <span class="keyword">const</span> <span class="special">&amp;</span> <span class="special">=</span> <span class="identifier">channel_fallback_policy</span><span class="special">(</span><span class="special">)</span><span class="special">,</span>
  75                                    <span class="identifier">severity_fallback_policy</span> <span class="keyword">const</span> <span class="special">&amp;</span> <span class="special">=</span> <span class="identifier">severity_fallback_policy</span><span class="special">(</span><span class="special">)</span><span class="special">,</span>
  76                                    <span class="identifier">ChannelOrderT</span> <span class="keyword">const</span> <span class="special">&amp;</span> <span class="special">=</span> <span class="identifier">ChannelOrderT</span><span class="special">(</span><span class="special">)</span><span class="special">,</span>
  77                                    <span class="identifier">SeverityCompareT</span> <span class="keyword">const</span> <span class="special">&amp;</span> <span class="special">=</span> <span class="identifier">SeverityCompareT</span><span class="special">(</span><span class="special">)</span><span class="special">)</span><span class="special">;</span>
  78
  79   <span class="comment">// <a class="link" href="channel__idm45711347468608.html#idm45711347442976-bb">public member functions</a></span>
  80   <span class="keyword">void</span> <a class="link" href="channel__idm45711347468608.html#idm45711347442416-bb"><span class="identifier">add</span></a><span class="special">(</span><span class="identifier">channel_value_type</span> <span class="keyword">const</span> <span class="special">&amp;</span><span class="special">,</span> <span class="identifier">severity_value_type</span> <span class="keyword">const</span> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
  81   <span class="keyword">void</span> <a class="link" href="channel__idm45711347468608.html#idm45711347439856-bb"><span class="identifier">set_default</span></a><span class="special">(</span><span class="keyword">bool</span><span class="special">)</span><span class="special">;</span>
  82   <span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> ContextT<span class="special">&gt;</span> <span class="identifier">result_type</span> <a class="link" href="channel__idm45711347468608.html#idm45711347438000-bb"><span class="keyword">operator</span><span class="special">(</span><span class="special">)</span></a><span class="special">(</span><span class="identifier">ContextT</span> <span class="keyword">const</span> <span class="special">&amp;</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  83
  84   <span class="comment">// <a class="link" href="channel__idm45711347468608.html#idm45711347428944-bb">private member functions</a></span>
  85   <span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> ArgT<span class="special">&gt;</span>
  86     <span class="keyword">void</span> <a class="link" href="channel__idm45711347468608.html#idm45711347428368-bb"><span class="identifier">visit_channel</span></a><span class="special">(</span><span class="identifier">channel_value_type</span> <span class="keyword">const</span> <span class="special">&amp;</span><span class="special">,</span> <span class="identifier">ArgT</span> <span class="keyword">const</span> <span class="special">&amp;</span><span class="special">,</span> <span class="keyword">bool</span> <span class="special">&amp;</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  87   <span class="keyword">void</span> <a class="link" href="channel__idm45711347468608.html#idm45711347424032-bb"><span class="identifier">visit_severity</span></a><span class="special">(</span><span class="identifier">severity_value_type</span> <span class="keyword">const</span> <span class="special">&amp;</span><span class="special">,</span>
  88                       <span class="identifier">severity_value_type</span> <span class="keyword">const</span> <span class="special">&amp;</span><span class="special">,</span> <span class="keyword">bool</span> <span class="special">&amp;</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  89 <span class="special">}</span><span class="special">;</span></pre></div>
  90 <div class="refsect1">
  91 <a name="idm45554742148688"></a><h2>Description</h2>
  92 <div class="refsect2">
  93 <a name="idm45554742148272"></a><h3>
  94 <a name="boost.log.expressions.channel__idm45711347468608construct-copy-destruct"></a><code class="computeroutput">channel_severity_filter_terminal</code>
  95         public
  96        construct/copy/destruct</h3>
  97 <div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem">
  98 <pre class="literallayout"><a name="idm45711347434896-bb"></a><span class="identifier">channel_severity_filter_terminal</span><span class="special">(</span><span class="identifier">attribute_name</span> <span class="keyword">const</span> <span class="special">&amp;</span> channel_name<span class="special">,</span>
  99                                  <span class="identifier">attribute_name</span> <span class="keyword">const</span> <span class="special">&amp;</span> severity_name<span class="special">,</span>
 100                                  <span class="identifier">channel_fallback_policy</span> <span class="keyword">const</span> <span class="special">&amp;</span> channel_fallback <span class="special">=</span> <span class="identifier">channel_fallback_policy</span><span class="special">(</span><span class="special">)</span><span class="special">,</span>
 101                                  <span class="identifier">severity_fallback_policy</span> <span class="keyword">const</span> <span class="special">&amp;</span> severity_fallback <span class="special">=</span> <span class="identifier">severity_fallback_policy</span><span class="special">(</span><span class="special">)</span><span class="special">,</span>
 102                                  <span class="identifier">ChannelOrderT</span> <span class="keyword">const</span> <span class="special">&amp;</span> channel_order <span class="special">=</span> <span class="identifier">ChannelOrderT</span><span class="special">(</span><span class="special">)</span><span class="special">,</span>
 103                                  <span class="identifier">SeverityCompareT</span> <span class="keyword">const</span> <span class="special">&amp;</span> severity_compare <span class="special">=</span> <span class="identifier">SeverityCompareT</span><span class="special">(</span><span class="special">)</span><span class="special">)</span><span class="special">;</span></pre>Initializing constructor. </li></ol></div>
 104 </div>
 105 <div class="refsect2">
 106 <a name="idm45554742117104"></a><h3>
 107 <a name="idm45711347442976-bb"></a><code class="computeroutput">channel_severity_filter_terminal</code> public member functions</h3>
 108 <div class="orderedlist"><ol class="orderedlist" type="1">
 109 <li class="listitem">
 110 <pre class="literallayout"><span class="keyword">void</span> <a name="idm45711347442416-bb"></a><span class="identifier">add</span><span class="special">(</span><span class="identifier">channel_value_type</span> <span class="keyword">const</span> <span class="special">&amp;</span> channel<span class="special">,</span>
 111          <span class="identifier">severity_value_type</span> <span class="keyword">const</span> <span class="special">&amp;</span> severity<span class="special">)</span><span class="special">;</span></pre>Adds a new element to the mapping. </li>
 112 <li class="listitem">
 113 <pre class="literallayout"><span class="keyword">void</span> <a name="idm45711347439856-bb"></a><span class="identifier">set_default</span><span class="special">(</span><span class="keyword">bool</span> def<span class="special">)</span><span class="special">;</span></pre>Sets the default result of the predicate. </li>
 114 <li class="listitem">
 115 <pre class="literallayout"><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> ContextT<span class="special">&gt;</span> <span class="identifier">result_type</span> <a name="idm45711347438000-bb"></a><span class="keyword">operator</span><span class="special">(</span><span class="special">)</span><span class="special">(</span><span class="identifier">ContextT</span> <span class="keyword">const</span> <span class="special">&amp;</span> ctx<span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>Invokation operator. </li>
 116 </ol></div>
 117 </div>
 118 <div class="refsect2">
 119 <a name="idm45554742089600"></a><h3>
 120 <a name="idm45711347428944-bb"></a><code class="computeroutput">channel_severity_filter_terminal</code> private member functions</h3>
 121 <div class="orderedlist"><ol class="orderedlist" type="1">
 122 <li class="listitem">
 123 <pre class="literallayout"><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> ArgT<span class="special">&gt;</span>
 124   <span class="keyword">void</span> <a name="idm45711347428368-bb"></a><span class="identifier">visit_channel</span><span class="special">(</span><span class="identifier">channel_value_type</span> <span class="keyword">const</span> <span class="special">&amp;</span> channel<span class="special">,</span> <span class="identifier">ArgT</span> <span class="keyword">const</span> <span class="special">&amp;</span> arg<span class="special">,</span>
 125                      <span class="keyword">bool</span> <span class="special">&amp;</span> res<span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>Visits channel name. </li>
 126 <li class="listitem">
 127 <pre class="literallayout"><span class="keyword">void</span> <a name="idm45711347424032-bb"></a><span class="identifier">visit_severity</span><span class="special">(</span><span class="identifier">severity_value_type</span> <span class="keyword">const</span> <span class="special">&amp;</span> left<span class="special">,</span>
 128                     <span class="identifier">severity_value_type</span> <span class="keyword">const</span> <span class="special">&amp;</span> right<span class="special">,</span> <span class="keyword">bool</span> <span class="special">&amp;</span> res<span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>Visits severity level. </li>
 129 </ol></div>
 130 </div>
 131 </div>
 132 </div>
 133 <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
 134 <td align="left"></td>
 135 <td align="right"><div class="copyright-footer">Copyright &#169; 2007-2016 Andrey Semashev<p>
 136         Distributed under the Boost Software License, Version 1.0. (See accompanying
 137         file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>).
 138       </p>
 139 </div></td>
 140 </tr></table>
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