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<a href="AvroTraits_8hh.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span>&#160;<span class="comment">/*</span></div><div class="line"><a name="l00002"></a><span class="lineno"> 2</span>&#160;<span class="comment"> * Licensed to the Apache Software Foundation (ASF) under one</span></div><div class="line"><a name="l00003"></a><span class="lineno"> 3</span>&#160;<span class="comment"> * or more contributor license agreements. See the NOTICE file</span></div><div class="line"><a name="l00004"></a><span class="lineno"> 4</span>&#160;<span class="comment"> * distributed with this work for additional information</span></div><div class="line"><a name="l00005"></a><span class="lineno"> 5</span>&#160;<span class="comment"> * regarding copyright ownership. The ASF licenses this file</span></div><div class="line"><a name="l00006"></a><span class="lineno"> 6</span>&#160;<span class="comment"> * to you under the Apache License, Version 2.0 (the</span></div><div class="line"><a name="l00007"></a><span class="lineno"> 7</span>&#160;<span class="comment"> * &quot;License&quot;); you may not use this file except in compliance</span></div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span>&#160;<span class="comment"> * with the License. You may obtain a copy of the License at</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"> * https://www.apache.org/licenses/LICENSE-2.0</span></div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span>&#160;<span class="comment"> *</span></div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span>&#160;<span class="comment"> * Unless required by applicable law or agreed to in writing, software</span></div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span>&#160;<span class="comment"> * distributed under the License is distributed on an &quot;AS IS&quot; BASIS,</span></div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span>&#160;<span class="comment"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span></div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span>&#160;<span class="comment"> * See the License for the specific language governing permissions and</span></div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span>&#160;<span class="comment"> * limitations under the License.</span></div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span>&#160;</div><div class="line"><a name="l00019"></a><span class="lineno"> 19</span>&#160;<span class="preprocessor">#ifndef avro_AvroTraits_hh__</span></div><div class="line"><a name="l00020"></a><span class="lineno"> 20</span>&#160;<span class="preprocessor">#define avro_AvroTraits_hh__</span></div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span>&#160;</div><div class="line"><a name="l00022"></a><span class="lineno"> 22</span>&#160;<span class="preprocessor">#include &quot;Config.hh&quot;</span></div><div class="line"><a name="l00023"></a><span class="lineno"> 23</span>&#160;<span class="preprocessor">#include &quot;Types.hh&quot;</span></div><div class="line"><a name="l00024"></a><span class="lineno"> 24</span>&#160;<span class="preprocessor">#include &lt;stdint.h&gt;</span></div><div class="line"><a name="l00025"></a><span class="lineno"> 25</span>&#160;<span class="preprocessor">#include &lt;type_traits&gt;</span></div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span>&#160;</div><div class="line"><a name="l00031"></a><span class="lineno"> 31</span>&#160;<span class="keyword">namespace </span><a class="code" href="namespaceavro.html">avro</a> {</div><div class="line"><a name="l00032"></a><span class="lineno"> 32</span>&#160;</div><div class="line"><a name="l00037"></a><span class="lineno"> 37</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div><div class="line"><a name="l00038"></a><span class="lineno"><a class="line" href="structavro_1_1is__serializable.html"> 38</a></span>&#160;<span class="keyword">struct </span><a class="code" href="structavro_1_1is__serializable.html">is_serializable</a> : <span class="keyword">public</span> std::false_type{};</div><div class="line"><a name="l00039"></a><span class="lineno"> 39</span>&#160;</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> T&gt;</div><div class="line"><a name="l00041"></a><span class="lineno"><a class="line" href="structavro_1_1is__promotable.html"> 41</a></span>&#160;<span class="keyword">struct </span><a class="code" href="structavro_1_1is__promotable.html">is_promotable</a> : <span class="keyword">public</span> std::false_type{};</div><div class="line"><a name="l00042"></a><span class="lineno"> 42</span>&#160;</div><div class="line"><a name="l00043"></a><span class="lineno"> 43</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div><div class="line"><a name="l00044"></a><span class="lineno"><a class="line" href="structavro_1_1type__to__avro.html"> 44</a></span>&#160;<span class="keyword">struct </span><a class="code" href="structavro_1_1type__to__avro.html">type_to_avro</a> {</div><div class="line"><a name="l00045"></a><span class="lineno"> 45</span>&#160; <span class="keyword">static</span> <span class="keyword">const</span> <a class="code" href="namespaceavro.html#a29e528c3fe1cb5660067a02721fae0b7">Type</a> type = <a class="code" href="namespaceavro.html#a29e528c3fe1cb5660067a02721fae0b7a091926107dab9cc29dff31c8e4eee47d">AVRO_NUM_TYPES</a>;</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;</div><div class="line"><a name="l00055"></a><span class="lineno"> 55</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">class</span> T&gt;</div><div class="line"><a name="l00056"></a><span class="lineno"><a class="line" href="structavro_1_1is__defined.html"> 56</a></span>&#160;<span class="keyword">struct </span><a class="code" href="structavro_1_1is__defined.html">is_defined</a> {</div><div class="line"><a name="l00057"></a><span class="lineno"> 57</span>&#160;</div><div class="line"><a name="l00058"></a><span class="lineno"> 58</span>&#160; <span class="keyword">typedef</span> <span class="keywordtype">char</span> yes[1];</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="keyword">typedef</span> <span class="keywordtype">char</span> no[2];</div><div class="line"><a name="l00061"></a><span class="lineno"> 61</span>&#160;</div><div class="line"><a name="l00062"></a><span class="lineno"> 62</span>&#160; <span class="keyword">template</span> &lt;<span class="keyword">class</span> U&gt; <span class="keyword">static</span> yes&amp; test(<span class="keywordtype">char</span>(*)[<span class="keyword">sizeof</span>(U)]) { <span class="keywordflow">throw</span> 0; };</div><div class="line"><a name="l00063"></a><span class="lineno"> 63</span>&#160;</div><div class="line"><a name="l00064"></a><span class="lineno"> 64</span>&#160; <span class="keyword">template</span> &lt;<span class="keyword">class</span> U&gt; <span class="keyword">static</span> no&amp; test(...) { <span class="keywordflow">throw</span> 0; };</div><div class="line"><a name="l00065"></a><span class="lineno"> 65</span>&#160;</div><div class="line"><a name="l00066"></a><span class="lineno"> 66</span>&#160; <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">bool</span> value = <span class="keyword">sizeof</span>(test&lt;T&gt;(0)) == <span class="keyword">sizeof</span>(yes);</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;</div><div class="line"><a name="l00075"></a><span class="lineno"> 75</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">class</span> T&gt;</div><div class="line"><a name="l00076"></a><span class="lineno"><a class="line" href="structavro_1_1is__not__defined.html"> 76</a></span>&#160;<span class="keyword">struct </span><a class="code" href="structavro_1_1is__not__defined.html">is_not_defined</a> {</div><div class="line"><a name="l00077"></a><span class="lineno"> 77</span>&#160;</div><div class="line"><a name="l00078"></a><span class="lineno"> 78</span>&#160; <span class="keyword">typedef</span> <span class="keywordtype">char</span> yes[1];</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="keyword">typedef</span> <span class="keywordtype">char</span> no[2];</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">template</span> &lt;<span class="keyword">class</span> U&gt; <span class="keyword">static</span> yes&amp; test(<span class="keywordtype">char</span>(*)[<span class="keyword">sizeof</span>(U)]) { <span class="keywordflow">throw</span> 0; };</div><div class="line"><a name="l00083"></a><span class="lineno"> 83</span>&#160;</div><div class="line"><a name="l00084"></a><span class="lineno"> 84</span>&#160; <span class="keyword">template</span> &lt;<span class="keyword">class</span> U&gt; <span class="keyword">static</span> no&amp; test(...) { <span class="keywordflow">throw</span> 0; };</div><div class="line"><a name="l00085"></a><span class="lineno"> 85</span>&#160;</div><div class="line"><a name="l00086"></a><span class="lineno"> 86</span>&#160; <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">bool</span> value = <span class="keyword">sizeof</span>(test&lt;T&gt;(0)) == <span class="keyword">sizeof</span>(no);</div><div class="line"><a name="l00087"></a><span class="lineno"> 87</span>&#160;};</div><div class="line"><a name="l00088"></a><span class="lineno"> 88</span>&#160;</div><div class="line"><a name="l00089"></a><span class="lineno"> 89</span>&#160;<span class="preprocessor">#define DEFINE_PRIMITIVE(CTYPE, AVROTYPE) \</span></div><div class="line"><a name="l00090"></a><span class="lineno"> 90</span>&#160;<span class="preprocessor">template &lt;&gt; \</span></div><div class="line"><a name="l00091"></a><span class="lineno"> 91</span>&#160;<span class="preprocessor">struct is_serializable&lt;CTYPE&gt; : public std::true_type{}; \</span></div><div class="line"><a name="l00092"></a><span class="lineno"> 92</span>&#160;<span class="preprocessor">\</span></div><div class="line"><a name="l00093"></a><span class="lineno"> 93</span>&#160;<span class="preprocessor">template &lt;&gt; \</span></div><div class="line"><a name="l00094"></a><span class="lineno"> 94</span>&#160;<span class="preprocessor">struct type_to_avro&lt;CTYPE&gt; { \</span></div><div class="line"><a name="l00095"></a><span class="lineno"> 95</span>&#160;<span class="preprocessor"> static const Type type = AVROTYPE; \</span></div><div class="line"><a name="l00096"></a><span class="lineno"> 96</span>&#160;<span class="preprocessor">};</span></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;<span class="preprocessor">#define DEFINE_PROMOTABLE_PRIMITIVE(CTYPE, AVROTYPE) \</span></div><div class="line"><a name="l00099"></a><span class="lineno"> 99</span>&#160;<span class="preprocessor">template &lt;&gt; \</span></div><div class="line"><a name="l00100"></a><span class="lineno"> 100</span>&#160;<span class="preprocessor">struct is_promotable&lt;CTYPE&gt; : public std::true_type{}; \</span></div><div class="line"><a name="l00101"></a><span class="lineno"> 101</span>&#160;<span class="preprocessor">\</span></div><div class="line"><a name="l00102"></a><span class="lineno"> 102</span>&#160;<span class="preprocessor">DEFINE_PRIMITIVE(CTYPE, AVROTYPE)</span></div><div class="line"><a name="l00103"></a><span class="lineno"> 103</span>&#160;</div><div class="line"><a name="l00104"></a><span class="lineno"> 104</span>&#160;DEFINE_PROMOTABLE_PRIMITIVE(int32_t, <a class="code" href="namespaceavro.html#a29e528c3fe1cb5660067a02721fae0b7a53f57f125161dc143d955e0eecafd7a3">AVRO_INT</a>)</div><div class="line"><a name="l00105"></a><span class="lineno"> 105</span>&#160;DEFINE_PROMOTABLE_PRIMITIVE(int64_t, <a class="code" href="namespaceavro.html#a29e528c3fe1cb5660067a02721fae0b7a692a9ce3245cea9dcbc10ee73b8c6340">AVRO_LONG</a>)</div><div class="line"><a name="l00106"></a><span class="lineno"> 106</span>&#160;DEFINE_PROMOTABLE_PRIMITIVE(<span class="keywordtype">float</span>, <a class="code" href="namespaceavro.html#a29e528c3fe1cb5660067a02721fae0b7a49eb3fcb0154b63104c8041e07ef02b8">AVRO_FLOAT</a>)</div><div class="line"><a name="l00107"></a><span class="lineno"> 107</span>&#160;DEFINE_PRIMITIVE(<span class="keywordtype">double</span>, <a class="code" href="namespaceavro.html#a29e528c3fe1cb5660067a02721fae0b7a6d280a38797d72263c8b1c83f981b800">AVRO_DOUBLE</a>)</div><div class="line"><a name="l00108"></a><span class="lineno"> 108</span>&#160;DEFINE_PRIMITIVE(<span class="keywordtype">bool</span>, <a class="code" href="namespaceavro.html#a29e528c3fe1cb5660067a02721fae0b7a8fbd33da2d41bf10e877dabac5af5dd2">AVRO_BOOL</a>)</div><div class="line"><a name="l00109"></a><span class="lineno"> 109</span>&#160;DEFINE_PRIMITIVE(<a class="code" href="structavro_1_1Null.html">Null</a>, <a class="code" href="namespaceavro.html#a29e528c3fe1cb5660067a02721fae0b7ae6058ac1a8cd7ab916450d8616c40cff">AVRO_NULL</a>)</div><div class="line"><a name="l00110"></a><span class="lineno"> 110</span>&#160;DEFINE_PRIMITIVE(std::string, <a class="code" href="namespaceavro.html#a29e528c3fe1cb5660067a02721fae0b7a653cfbb5f5aca522271b435e7215087f">AVRO_STRING</a>)</div><div class="line"><a name="l00111"></a><span class="lineno"> 111</span>&#160;DEFINE_PRIMITIVE(std::vector&lt;uint8_t&gt;, <a class="code" href="namespaceavro.html#a29e528c3fe1cb5660067a02721fae0b7aa5ff10208f8bf3952647c48c1f67ca09">AVRO_BYTES</a>)</div><div class="line"><a name="l00112"></a><span class="lineno"> 112</span>&#160;</div><div class="line"><a name="l00113"></a><span class="lineno"> 113</span>&#160;</div><div class="line"><a name="l00114"></a><span class="lineno"> 114</span>&#160;} <span class="comment">// namespace avro</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</span></div><div class="ttc" id="namespaceavro_html_a29e528c3fe1cb5660067a02721fae0b7a49eb3fcb0154b63104c8041e07ef02b8"><div class="ttname"><a href="namespaceavro.html#a29e528c3fe1cb5660067a02721fae0b7a49eb3fcb0154b63104c8041e07ef02b8">avro::AVRO_FLOAT</a></div><div class="ttdef"><b>Definition:</b> Types.hh:37</div></div>
<div class="ttc" id="namespaceavro_html_a29e528c3fe1cb5660067a02721fae0b7ae6058ac1a8cd7ab916450d8616c40cff"><div class="ttname"><a href="namespaceavro.html#a29e528c3fe1cb5660067a02721fae0b7ae6058ac1a8cd7ab916450d8616c40cff">avro::AVRO_NULL</a></div><div class="ttdef"><b>Definition:</b> Types.hh:40</div></div>
<div class="ttc" id="structavro_1_1is__defined_html"><div class="ttname"><a href="structavro_1_1is__defined.html">avro::is_defined</a></div><div class="ttdoc">Check if a T is a complete type i.e. </div><div class="ttdef"><b>Definition:</b> AvroTraits.hh:56</div></div>
<div class="ttc" id="namespaceavro_html_a29e528c3fe1cb5660067a02721fae0b7"><div class="ttname"><a href="namespaceavro.html#a29e528c3fe1cb5660067a02721fae0b7">avro::Type</a></div><div class="ttdeci">Type</div><div class="ttdoc">The &quot;type&quot; for the schema. </div><div class="ttdef"><b>Definition:</b> Types.hh:31</div></div>
<div class="ttc" id="namespaceavro_html_a29e528c3fe1cb5660067a02721fae0b7a091926107dab9cc29dff31c8e4eee47d"><div class="ttname"><a href="namespaceavro.html#a29e528c3fe1cb5660067a02721fae0b7a091926107dab9cc29dff31c8e4eee47d">avro::AVRO_NUM_TYPES</a></div><div class="ttdef"><b>Definition:</b> Types.hh:49</div></div>
<div class="ttc" id="namespaceavro_html"><div class="ttname"><a href="namespaceavro.html">avro</a></div><div class="ttdoc">A bunch of templates and specializations for encoding and decoding specific types. </div><div class="ttdef"><b>Definition:</b> AvroParse.hh:30</div></div>
<div class="ttc" id="namespaceavro_html_a29e528c3fe1cb5660067a02721fae0b7a8fbd33da2d41bf10e877dabac5af5dd2"><div class="ttname"><a href="namespaceavro.html#a29e528c3fe1cb5660067a02721fae0b7a8fbd33da2d41bf10e877dabac5af5dd2">avro::AVRO_BOOL</a></div><div class="ttdef"><b>Definition:</b> Types.hh:39</div></div>
<div class="ttc" id="namespaceavro_html_a29e528c3fe1cb5660067a02721fae0b7a653cfbb5f5aca522271b435e7215087f"><div class="ttname"><a href="namespaceavro.html#a29e528c3fe1cb5660067a02721fae0b7a653cfbb5f5aca522271b435e7215087f">avro::AVRO_STRING</a></div><div class="ttdef"><b>Definition:</b> Types.hh:33</div></div>
<div class="ttc" id="structavro_1_1is__promotable_html"><div class="ttname"><a href="structavro_1_1is__promotable.html">avro::is_promotable</a></div><div class="ttdef"><b>Definition:</b> AvroTraits.hh:41</div></div>
<div class="ttc" id="namespaceavro_html_a29e528c3fe1cb5660067a02721fae0b7a53f57f125161dc143d955e0eecafd7a3"><div class="ttname"><a href="namespaceavro.html#a29e528c3fe1cb5660067a02721fae0b7a53f57f125161dc143d955e0eecafd7a3">avro::AVRO_INT</a></div><div class="ttdef"><b>Definition:</b> Types.hh:35</div></div>
<div class="ttc" id="namespaceavro_html_a29e528c3fe1cb5660067a02721fae0b7aa5ff10208f8bf3952647c48c1f67ca09"><div class="ttname"><a href="namespaceavro.html#a29e528c3fe1cb5660067a02721fae0b7aa5ff10208f8bf3952647c48c1f67ca09">avro::AVRO_BYTES</a></div><div class="ttdef"><b>Definition:</b> Types.hh:34</div></div>
<div class="ttc" id="namespaceavro_html_a29e528c3fe1cb5660067a02721fae0b7a6d280a38797d72263c8b1c83f981b800"><div class="ttname"><a href="namespaceavro.html#a29e528c3fe1cb5660067a02721fae0b7a6d280a38797d72263c8b1c83f981b800">avro::AVRO_DOUBLE</a></div><div class="ttdef"><b>Definition:</b> Types.hh:38</div></div>
<div class="ttc" id="structavro_1_1Null_html"><div class="ttname"><a href="structavro_1_1Null.html">avro::Null</a></div><div class="ttdoc">define a type to identify Null in template functions </div><div class="ttdef"><b>Definition:</b> Types.hh:102</div></div>
<div class="ttc" id="structavro_1_1is__not__defined_html"><div class="ttname"><a href="structavro_1_1is__not__defined.html">avro::is_not_defined</a></div><div class="ttdoc">Similar to is_defined, but used to check if T is not defined. </div><div class="ttdef"><b>Definition:</b> AvroTraits.hh:76</div></div>
<div class="ttc" id="structavro_1_1is__serializable_html"><div class="ttname"><a href="structavro_1_1is__serializable.html">avro::is_serializable</a></div><div class="ttdoc">Define an is_serializable trait for types we can serialize natively. </div><div class="ttdef"><b>Definition:</b> AvroTraits.hh:38</div></div>
<div class="ttc" id="structavro_1_1type__to__avro_html"><div class="ttname"><a href="structavro_1_1type__to__avro.html">avro::type_to_avro</a></div><div class="ttdef"><b>Definition:</b> AvroTraits.hh:44</div></div>
<div class="ttc" id="namespaceavro_html_a29e528c3fe1cb5660067a02721fae0b7a692a9ce3245cea9dcbc10ee73b8c6340"><div class="ttname"><a href="namespaceavro.html#a29e528c3fe1cb5660067a02721fae0b7a692a9ce3245cea9dcbc10ee73b8c6340">avro::AVRO_LONG</a></div><div class="ttdef"><b>Definition:</b> Types.hh:36</div></div>
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