http://git-wip-us.apache.org/repos/asf/arrow-site/blob/7a2e5ece/docs/cpp/type_8h_source.html ---------------------------------------------------------------------- diff --git a/docs/cpp/type_8h_source.html b/docs/cpp/type_8h_source.html index 7a6f6a7..94ba148 100644 --- a/docs/cpp/type_8h_source.html +++ b/docs/cpp/type_8h_source.html @@ -5,7 +5,7 @@ <meta http-equiv="X-UA-Compatible" content="IE=9"/> <meta name="generator" content="Doxygen 1.8.13"/> <meta name="viewport" content="width=device-width, initial-scale=1"/> -<title>Apache Arrow (C++): /home/wesm/code/arrow/cpp/src/arrow/type.h Source File</title> +<title>Apache Arrow (C++): /apache-arrow/arrow/cpp/src/arrow/type.h Source File</title> <link href="tabs.css" rel="stylesheet" type="text/css"/> <script type="text/javascript" src="jquery.js"></script> <script type="text/javascript" src="dynsections.js"></script> @@ -67,210 +67,210 @@ $(function() { <div class="title">type.h</div> </div> </div><!--header--> <div class="contents"> -<a href="type_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="comment">// Licensed to the Apache Software Foundation (ASF) under one</span></div><div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment">// or more contributor license agreements. See the NOTICE file</span></div><div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment">// distributed with this work for additional information</span></div><div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment">// regarding copyright ownership. The ASF licenses this file</span></div><div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment">// to you under the Apache License, Version 2.0 (the</span></div><div class="line"><a name="l00006"></a><span class="l ineno"> 6</span> <span class="comment">// "License"); you may not use this file except in compliance</span></div><div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment">// with the License. You may obtain a copy of the License at</span></div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment">//</span></div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment">// http://www.apache.org/licenses/LICENSE-2.0</span></div><div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment">//</span></div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment">// Unless required by applicable law or agreed to in writing,</span></div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment">// software distributed unde r the License is distributed on an</span></div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment">// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY</span></div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment">// KIND, either express or implied. See the License for the</span></div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment">// specific language governing permissions and limitations</span></div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment">// under the License.</span></div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span> </div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="preprocessor">#ifndef ARROW_TYPE_H</span></div><div class="line"><a name="l00019"></a><span class="lineno"> 19</spa n> <span class="preprocessor">#define ARROW_TYPE_H</span></div><div class="line"><a name="l00020"></a><span class="lineno"> 20</span> </div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="preprocessor">#include <climits></span></div><div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="preprocessor">#include <cstdint></span></div><div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="preprocessor">#include <memory></span></div><div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="preprocessor">#include <ostream></span></div><div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="preprocessor">#include <string></span></div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="preprocessor">#include <unordered_map></ span></div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="preprocessor">#include <vector></span></div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span> </div><div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="preprocessor">#include "<a class="code" href="status_8h.html">arrow/status.h</a>"</span></div><div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="preprocessor">#include "<a class="code" href="type__fwd_8h.html">arrow/type_fwd.h</a>"</span> <span class="comment">// IWYU pragma: export</span></div><div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="preprocessor">#include "<a class="code" href="key__value__metadata_8h.html">arrow/util/key_value_metadata.h</a>"</span></div><div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span cla ss="preprocessor">#include "<a class="code" href="macros_8h.html">arrow/util/macros.h</a>"</span></div><div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="preprocessor">#include "<a class="code" href="visibility_8h.html">arrow/util/visibility.h</a>"</span></div><div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="preprocessor">#include "<a class="code" href="visitor_8h.html">arrow/visitor.h</a>"</span></div><div class="line"><a name="l00035"></a><span class="lineno"> 35</span> </div><div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="keyword">namespace </span><a class="code" href="namespacearrow.html">arrow</a> {</div><div class="line"><a name="l00037"></a><span class="lineno"> 37</span> </div><div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="comment">// Data types in this library are all *logical*. They can be expressed as</span></div><div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="comment">// either a primitive physical type (bytes or bits of some fixed size), a</span></div><div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="comment">// nested type consisting of other data types, or another data type (e.g. a</span></div><div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="comment">// timestamp encoded as an int64)</span></div><div class="line"><a name="l00042"></a><span class="lineno"><a class="line" href="structarrow_1_1_type.html"> 42</a></span> <span class="keyword">struct </span><a class="code" href="structarrow_1_1_type.html">Type</a> {</div><div class="line"><a name="l00043"></a><span class="lineno"><a class="line" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44"> 43</a></span>  <span class="keyword">enum </span> <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44">type</a> {</div><div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  <span class="comment">// A degenerate NULL type represented as 0 bytes/bits</span></div><div class="line"><a name="l00045"></a><span class="lineno"><a class="line" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44af46d8600b17dd993097e0875a46e0b15"> 45</a></span>  <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44af46d8600b17dd993097e0875a46e0b15">NA</a>,</div><div class="line"><a name="l00046"></a><span class="lineno"> 46</span> </div><div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  <span class="comment">// A boolean value represented as 1 bit</span></div><div class="line"><a name="l00048"></a><span class="lineno"><a class="line" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44ae4bb414 6eedf3fb5a517780000001b30"> 48</a></span>  <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44ae4bb4146eedf3fb5a517780000001b30">BOOL</a>,</div><div class="line"><a name="l00049"></a><span class="lineno"> 49</span> </div><div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  <span class="comment">// Little-endian integer types</span></div><div class="line"><a name="l00051"></a><span class="lineno"><a class="line" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44ab8f52afb784526f800c91de101673b42"> 51</a></span>  <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44ab8f52afb784526f800c91de101673b42">UINT8</a>,</div><div class="line"><a name="l00052"></a><span class="lineno"><a class="line" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44adf9f694eb598f6f8cac8bed3da547d65"> 52</a></span>  <a class="code" href="structarrow_1_1_type.htm l#a00a041cb19a3be373da8eec7d4bf1f44adf9f694eb598f6f8cac8bed3da547d65">INT8</a>,</div><div class="line"><a name="l00053"></a><span class="lineno"><a class="line" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a87c4272d67d3a84ed9ce6c6a9a4a6772"> 53</a></span>  <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a87c4272d67d3a84ed9ce6c6a9a4a6772">UINT16</a>,</div><div class="line"><a name="l00054"></a><span class="lineno"><a class="line" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a36b3753b92501b60b2740b29d6e17696"> 54</a></span>  <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a36b3753b92501b60b2740b29d6e17696">INT16</a>,</div><div class="line"><a name="l00055"></a><span class="lineno"><a class="line" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a89620afd46abf8f99b057bd3587a78f0"> 55</a></span>  <a class="code" href="structarrow_1_1_typ e.html#a00a041cb19a3be373da8eec7d4bf1f44a89620afd46abf8f99b057bd3587a78f0">UINT32</a>,</div><div class="line"><a name="l00056"></a><span class="lineno"><a class="line" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44af8005f162bc422abcee7f1197bf04cf8"> 56</a></span>  <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44af8005f162bc422abcee7f1197bf04cf8">INT32</a>,</div><div class="line"><a name="l00057"></a><span class="lineno"><a class="line" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44af1096e3ebb2d7a678fc6ddac24bf7639"> 57</a></span>  <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44af1096e3ebb2d7a678fc6ddac24bf7639">UINT64</a>,</div><div class="line"><a name="l00058"></a><span class="lineno"><a class="line" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44af38ec7ec303572a87b11fd48876bc1d0"> 58</a></span>  <a class="code" href="structarrow_ 1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44af38ec7ec303572a87b11fd48876bc1d0">INT64</a>,</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">// 2-byte floating point value</span></div><div class="line"><a name="l00061"></a><span class="lineno"><a class="line" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44af6ebd198668f2a6c2d79c549f599e896"> 61</a></span>  <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44af6ebd198668f2a6c2d79c549f599e896">HALF_FLOAT</a>,</div><div class="line"><a name="l00062"></a><span class="lineno"> 62</span> </div><div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  <span class="comment">// 4-byte floating point value</span></div><div class="line"><a name="l00064"></a><span class="lineno"><a class="line" href="structarrow_1_1_ type.html#a00a041cb19a3be373da8eec7d4bf1f44a57c54c2b9d1630bc8c99b5fec4c93e58"> 64</a></span>  <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a57c54c2b9d1630bc8c99b5fec4c93e58">FLOAT</a>,</div><div class="line"><a name="l00065"></a><span class="lineno"> 65</span> </div><div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  <span class="comment">// 8-byte floating point value</span></div><div class="line"><a name="l00067"></a><span class="lineno"><a class="line" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a75397800ad025678ff7803b543d4a183"> 67</a></span>  <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a75397800ad025678ff7803b543d4a183">DOUBLE</a>,</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>  <span class="comment">// UTF8 variable-length string as List<Char></span></div><div class="line"><a name="l00070"></a><span class="lineno"><a class="line" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a864933bd7cdfa63ea75498c34db6545f"> 70</a></span>  <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a864933bd7cdfa63ea75498c34db6545f">STRING</a>,</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>  <span class="comment">// Variable-length bytes (no guarantee of UTF8-ness)</span></div><div class="line"><a name="l00073"></a><span class="lineno"><a class="line" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a442cc62761c7e5a83d26da4d3ed2fe01"> 73</a></span>  <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a442cc62761c7e5a83d26da4d3ed2fe01">BINARY</a>,</div><div class="line"> <a name="l00074"></a><span class="lineno"> 74</span> </div><div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  <span class="comment">// Fixed-size binary. Each value occupies the same number of bytes</span></div><div class="line"><a name="l00076"></a><span class="lineno"><a class="line" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a1b3f48148c5ff94c039d09ff689da179"> 76</a></span>  <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a1b3f48148c5ff94c039d09ff689da179">FIXED_SIZE_BINARY</a>,</div><div class="line"><a name="l00077"></a><span class="lineno"> 77</span> </div><div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  <span class="comment">// int32_t days since the UNIX epoch</span></div><div class="line"><a name="l00079"></a><span class="lineno"><a class="line" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a4351aedceb3d92f82cf7ae5 04476ef30"> 79</a></span>  <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a4351aedceb3d92f82cf7ae504476ef30">DATE32</a>,</div><div class="line"><a name="l00080"></a><span class="lineno"> 80</span> </div><div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  <span class="comment">// int64_t milliseconds since the UNIX epoch</span></div><div class="line"><a name="l00082"></a><span class="lineno"><a class="line" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a17325202e90c23cd194b1698eea87a38"> 82</a></span>  <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a17325202e90c23cd194b1698eea87a38">DATE64</a>,</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>  <span class="comment">// Exact timestamp encoded with int64 since UNIX epoch</spa n></div><div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  <span class="comment">// Default unit millisecond</span></div><div class="line"><a name="l00086"></a><span class="lineno"><a class="line" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a1e41dddee4a6410c4d6fe164b36a230e"> 86</a></span>  <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a1e41dddee4a6410c4d6fe164b36a230e">TIMESTAMP</a>,</div><div class="line"><a name="l00087"></a><span class="lineno"> 87</span> </div><div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  <span class="comment">// Time as signed 32-bit integer, representing either seconds or</span></div><div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  <span class="comment">// milliseconds since midnight</span></div><div class="line"><a name="l00090"></a><span class="lineno"><a class="line" href="structarrow_1 _1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a73fb0fcd2b5d9a4c6071574c73cdf3c5"> 90</a></span>  <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a73fb0fcd2b5d9a4c6071574c73cdf3c5">TIME32</a>,</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="comment">// Time as signed 64-bit integer, representing either microseconds or</span></div><div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  <span class="comment">// nanoseconds since midnight</span></div><div class="line"><a name="l00094"></a><span class="lineno"><a class="line" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44ab960cffd22f54b634d9f055f7568d321"> 94</a></span>  <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44ab960cffd22f54b634d9f055f7568d321">TIME64</a>,</div><div c lass="line"><a name="l00095"></a><span class="lineno"> 95</span> </div><div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  <span class="comment">// YEAR_MONTH or DAY_TIME interval in SQL style</span></div><div class="line"><a name="l00097"></a><span class="lineno"><a class="line" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44aaa546143f5b445f6478b7e157546ec3f"> 97</a></span>  <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44aaa546143f5b445f6478b7e157546ec3f">INTERVAL</a>,</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="comment">// Precision- and scale-based decimal type. Storage type depends on the</span></div><div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  <span class="comment">// parameters.</span></div><div class="lin e"><a name="l00101"></a><span class="lineno"><a class="line" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a014fe7104b592dbd7c70e4e861774a63"> 101</a></span>  <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a014fe7104b592dbd7c70e4e861774a63">DECIMAL</a>,</div><div class="line"><a name="l00102"></a><span class="lineno"> 102</span> </div><div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  <span class="comment">// A list of some logical data type</span></div><div class="line"><a name="l00104"></a><span class="lineno"><a class="line" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44ad074f9c02567b5945293b9114f84f210"> 104</a></span>  <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44ad074f9c02567b5945293b9114f84f210">LIST</a>,</div><div class="line"><a name="l00105"></a><span class="lineno"> 105</span> </div><div class="line"><a na me="l00106"></a><span class="lineno"> 106</span>  <span class="comment">// Struct of logical types</span></div><div class="line"><a name="l00107"></a><span class="lineno"><a class="line" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44aaa028b35c4e6a047c0e510ef1b0389ef"> 107</a></span>  <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44aaa028b35c4e6a047c0e510ef1b0389ef">STRUCT</a>,</div><div class="line"><a name="l00108"></a><span class="lineno"> 108</span> </div><div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  <span class="comment">// Unions of logical types</span></div><div class="line"><a name="l00110"></a><span class="lineno"><a class="line" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a2fa6d3a8e3947b7d0024304bfb8b5fad"> 110</a></span>  <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a2fa6d3a8e3947b7d0024304bfb8b5fa d">UNION</a>,</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>  <span class="comment">// Dictionary aka Category type</span></div><div class="line"><a name="l00113"></a><span class="lineno"><a class="line" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a3c38b5820a3de12d71713473550c6280"> 113</a></span>  <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a3c38b5820a3de12d71713473550c6280">DICTIONARY</a></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> };</div><div class="line"><a name="l00116"></a><span class="lineno"> 116</span> </div><div class="line"><a name="l00117"></a><span class="lineno"><a class="line" href="namespacearrow.html#af37e6996db0efe38caab9271161bcc33"> 117</a></sp an> <span class="keyword">enum class</span> <a class="code" href="namespacearrow.html#af37e6996db0efe38caab9271161bcc33">BufferType</a> : char { <a class="code" href="namespacearrow.html#af37e6996db0efe38caab9271161bcc33ae44f9e348e41cb272efa87387728571b">DATA</a>, <a class="code" href="namespacearrow.html#af37e6996db0efe38caab9271161bcc33a1b8a8605d2ff5670a215e55c6645e0d9">OFFSET</a>, <a class="code" href="namespacearrow.html#af37e6996db0efe38caab9271161bcc33a948495146facadfe8859789036313d79">TYPE</a>, <a class="code" href="namespacearrow.html#af37e6996db0efe38caab9271161bcc33a9af81702e4d10e3b2a7637a4f1dc30ce">VALIDITY</a> };</div><div class="line"><a name="l00118"></a><span class="lineno"> 118</span> </div><div class="line"><a name="l00119"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer_descr.html"> 119</a></span> <span class="keyword">class </span><a class="code" href="classarrow_1_1_buffer_descr.html">BufferDescr</a> {</div><div class="line"> <a name="l00120"></a><span class="lineno"> 120</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00121"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer_descr.html#aaf63f66e459f799365e5d3b18caa3cda"> 121</a></span>  <a class="code" href="classarrow_1_1_buffer_descr.html#aaf63f66e459f799365e5d3b18caa3cda">BufferDescr</a>(<a class="code" href="namespacearrow.html#af37e6996db0efe38caab9271161bcc33">BufferType</a> <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44">type</a>, <span class="keywordtype">int</span> bit_width) : type_(type), bit_width_(bit_width) {}</div><div class="line"><a name="l00122"></a><span class="lineno"> 122</span> </div><div class="line"><a name="l00123"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer_descr.html#a17027163a5249059a8296ededc0059dc"> 123</a></span>  <a class="code" href="namespacearrow.html#af37e6996db0efe38caab9271161bcc33">B ufferType</a> <a class="code" href="classarrow_1_1_buffer_descr.html#a17027163a5249059a8296ededc0059dc">type</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> type_; }</div><div class="line"><a name="l00124"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer_descr.html#ac424da4de50e0af986ee1aaa3ba611a4"> 124</a></span>  <span class="keywordtype">int</span> <a class="code" href="classarrow_1_1_buffer_descr.html#ac424da4de50e0af986ee1aaa3ba611a4">bit_width</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> bit_width_; }</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>  <span class="keyword">private</span>:</div><div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  <a class="code" href="namespacearrow.html#af37e6996db0efe38caab9271161bcc33">BufferType</a> type_;</div><div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  <span class="keywordtype">int</span> bit_width_;</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> </div><div class="line"><a name="l00131"></a><span class="lineno"><a class="line" href="classarrow_1_1_data_type.html"> 131</a></span> <span class="keyword">class </span>ARROW_EXPORT <a class="code" href="classarrow_1_1_data_type.html">DataType</a> {</div><div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00133"></a><span class="lineno"><a class="line" href="classarrow_1_1_data_type.html#a1b8a7ece05983649f67396177f40e844"> 133</a></span>  <span class="keyword">explicit</span> <a class="code" href="classarrow_1_1_data_type.html#a1b8a7ece05983649f67396177f40e844">DataType </a>(<a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44">Type::type</a> <span class="keywordtype">id</span>) : id_(id) {}</div><div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  <span class="keyword">virtual</span> ~<a class="code" href="classarrow_1_1_data_type.html">DataType</a>();</div><div class="line"><a name="l00135"></a><span class="lineno"> 135</span> </div><div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  <span class="comment">// Return whether the types are equal</span></div><div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  <span class="comment">//</span></div><div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  <span class="comment">// Types that are logically convertable from one to another e.g. List<UInt8></span></div><div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  <span class="comm ent">// and Binary are NOT equal).</span></div><div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  <span class="keyword">virtual</span> <span class="keywordtype">bool</span> Equals(<span class="keyword">const</span> <a class="code" href="classarrow_1_1_data_type.html">DataType</a>& other) <span class="keyword">const</span>;</div><div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  <span class="keywordtype">bool</span> Equals(<span class="keyword">const</span> std::shared_ptr<DataType>& other) <span class="keyword">const</span>;</div><div class="line"><a name="l00142"></a><span class="lineno"> 142</span> </div><div class="line"><a name="l00143"></a><span class="lineno"><a class="line" href="classarrow_1_1_data_type.html#ad84ecbff08a365b455c4528a9924e6ef"> 143</a></span>  std::shared_ptr<Field> <a class="code" href="classarrow_1_1_data_type.html#ad84ecbff08a365b455c4528a9924e6ef">child</a>(<span cl ass="keywordtype">int</span> i)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> children_[i]; }</div><div class="line"><a name="l00144"></a><span class="lineno"> 144</span> </div><div class="line"><a name="l00145"></a><span class="lineno"><a class="line" href="classarrow_1_1_data_type.html#a36061c037a2e6e974cc3b22dfb6a5bac"> 145</a></span>  <span class="keyword">const</span> std::vector<std::shared_ptr<Field>>& <a class="code" href="classarrow_1_1_data_type.html#a36061c037a2e6e974cc3b22dfb6a5bac">children</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> children_; }</div><div class="line"><a name="l00146"></a><span class="lineno"> 146</span> </div><div class="line"><a name="l00147"></a><span class="lineno"><a class="line" href="classarrow_1_1_data_type.html#ac8920179a6c1e7f434c495d5ec4662f1"> 147</a></span>  <span class="keywordtype">int</span> <a class="code" href="classarrow_1_ 1_data_type.html#ac8920179a6c1e7f434c495d5ec4662f1">num_children</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> <span class="keyword">static_cast<</span><span class="keywordtype">int</span><span class="keyword">></span>(children_.size()); }</div><div class="line"><a name="l00148"></a><span class="lineno"> 148</span> </div><div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  <span class="keyword">virtual</span> <a class="code" href="classarrow_1_1_status.html">Status</a> Accept(<a class="code" href="classarrow_1_1_type_visitor.html">TypeVisitor</a>* visitor) <span class="keyword">const</span> = 0;</div><div class="line"><a name="l00150"></a><span class="lineno"> 150</span> </div><div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  <span class="keyword">virtual</span> std::string ToString() <span class="keyword">const</span> = 0;</div><div class="line"><a name="l00153"></a><span class="lineno"> 153</span> </div><div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  <span class="keyword">virtual</span> std::string name() <span class="keyword">const</span> = 0;</div><div class="line"><a name="l00159"></a><span class="lineno"> 159</span> </div><div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  <span class="keyword">virtual</span> std::vector<BufferDescr> GetBufferLayout() <span class="keyword">const</span> = 0;</div><div class="line"><a name="l00161"></a><span class="lineno"> 161</span> </div><div class="line"><a name="l00162"></a><span class="lineno"><a class="line" href="classarrow_1_1_data_type.html#a5ec6a1c93420c68e9c8065d4a56ad645"> 162</a></span>  <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44">Type::type</a> <a class="code" href="classarrow_1_1_data_type.html#a5ec6a1c93420c68e9c8065d4a56ad645">id</a>()<span class="keyword"> const </sp an>{ <span class="keywordflow">return</span> id_; }</div><div class="line"><a name="l00163"></a><span class="lineno"> 163</span> </div><div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  <span class="keyword">protected</span>:</div><div class="line"><a name="l00165"></a><span class="lineno"><a class="line" href="classarrow_1_1_data_type.html#aa2704f1cfc50018d02e109b32f67e422"> 165</a></span>  <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44">Type::type</a> <a class="code" href="classarrow_1_1_data_type.html#aa2704f1cfc50018d02e109b32f67e422">id_</a>;</div><div class="line"><a name="l00166"></a><span class="lineno"><a class="line" href="classarrow_1_1_data_type.html#a8dd2f042289733133c386463afcea902"> 166</a></span>  std::vector<std::shared_ptr<Field>> <a class="code" href="classarrow_1_1_data_type.html#a8dd2f042289733133c386463afcea902">children_</a>;</div><div class="line"><a name="l00167">< /a><span class="lineno"> 167</span> </div><div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  <span class="keyword">private</span>:</div><div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  <a class="code" href="macros_8h.html#a40d72e185b1488b5659b761f0b6115bb">ARROW_DISALLOW_COPY_AND_ASSIGN</a>(<a class="code" href="classarrow_1_1_data_type.html">DataType</a>);</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="l00172"></a><span class="lineno"><a class="line" href="namespacearrow.html#a5709505547e744fa9cf7ddb09b1c2984"> 172</a></span> <span class="keyword">inline</span> std::ostream& <a class="code" href="namespacearrow.html#a5709505547e744fa9cf7ddb09b1c2984">operator<<</a>(std::ostream& os, <span class="keyword">const</span> <a class="code" href="classar row_1_1_data_type.html">DataType</a>& <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44">type</a>) {</div><div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  os << type.<a class="code" href="classarrow_1_1_data_type.html#a944727354fb11138ebd46368319598f2">ToString</a>();</div><div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  <span class="keywordflow">return</span> os;</div><div class="line"><a name="l00175"></a><span class="lineno"> 175</span> }</div><div class="line"><a name="l00176"></a><span class="lineno"> 176</span> </div><div class="line"><a name="l00177"></a><span class="lineno"> 177</span> <span class="comment">// TODO(wesm): Remove this from parquet-cpp</span></div><div class="line"><a name="l00178"></a><span class="lineno"><a class="line" href="namespacearrow.html#a622ee062b6f19281209f41fe95a4cb69"> 178</a></span> <span class="keyword">using</span> <a class="code" href="namespacearrow.html#a622ee062b6f19281209f41fe95a4cb69">TypePtr</a> = std::shared_ptr<DataType>;</div><div class="line"><a name="l00179"></a><span class="lineno"> 179</span> </div><div class="line"><a name="l00180"></a><span class="lineno"><a class="line" href="classarrow_1_1_fixed_width_type.html"> 180</a></span> <span class="keyword">class </span>ARROW_EXPORT <a class="code" href="classarrow_1_1_fixed_width_type.html">FixedWidthType</a> : <span class="keyword">public</span> <a class="code" href="classarrow_1_1_data_type.html">DataType</a> {</div><div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  <span class="keyword">using</span> <a class="code" href="classarrow_1_1_data_type.html#a1b8a7ece05983649f67396177f40e844">DataType::DataType</a>;</div><div class="line"><a name="l00183"></a><span class="li neno"> 183</span> </div><div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  <span class="keyword">virtual</span> <span class="keywordtype">int</span> bit_width() <span class="keyword">const</span> = 0;</div><div class="line"><a name="l00185"></a><span class="lineno"> 185</span> </div><div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  std::vector<BufferDescr> GetBufferLayout() <span class="keyword">const override</span>;</div><div class="line"><a name="l00187"></a><span class="lineno"> 187</span> };</div><div class="line"><a name="l00188"></a><span class="lineno"> 188</span> </div><div class="line"><a name="l00189"></a><span class="lineno"><a class="line" href="classarrow_1_1_primitive_c_type.html"> 189</a></span> <span class="keyword">class </span>ARROW_EXPORT <a class="code" href="classarrow_1_1_primitive_c_type.html">PrimitiveCType</a> : <span class="keyword">public</span> <a class="code" href="classarrow_1_1_fixed_width_type.html">FixedWidthType</a> {</div><div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  <span class="keyword">using</span> FixedWidthType::FixedWidthType;</div><div class="line"><a name="l00192"></a><span class="lineno"> 192</span> };</div><div class="line"><a name="l00193"></a><span class="lineno"> 193</span> </div><div class="line"><a name="l00194"></a><span class="lineno"><a class="line" href="classarrow_1_1_number.html"> 194</a></span> <span class="keyword">class </span>ARROW_EXPORT <a class="code" href="classarrow_1_1_number.html">Number</a> : <span class="keyword">public</span> <a class="code" href="classarrow_1_1_primitive_c_type.html">PrimitiveCType</a> {</div><div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  <span class="keyword">public</span>:</di v><div class="line"><a name="l00196"></a><span class="lineno"> 196</span>  <span class="keyword">using</span> PrimitiveCType::PrimitiveCType;</div><div class="line"><a name="l00197"></a><span class="lineno"> 197</span> };</div><div class="line"><a name="l00198"></a><span class="lineno"> 198</span> </div><div class="line"><a name="l00199"></a><span class="lineno"><a class="line" href="classarrow_1_1_integer.html"> 199</a></span> <span class="keyword">class </span>ARROW_EXPORT <a class="code" href="classarrow_1_1_integer.html">Integer</a> : <span class="keyword">public</span> <a class="code" href="classarrow_1_1_number.html">Number</a> {</div><div class="line"><a name="l00200"></a><span class="lineno"> 200</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00201"></a><span class="lineno"> 201</span>  <span class="keyword">using</span> Number::Number;</div><div class="line"><a name="l00202"></a><span class="lineno"> 202< /span>  <span class="keyword">virtual</span> <span class="keywordtype">bool</span> is_signed() <span class="keyword">const</span> = 0;</div><div class="line"><a name="l00203"></a><span class="lineno"> 203</span> };</div><div class="line"><a name="l00204"></a><span class="lineno"> 204</span> </div><div class="line"><a name="l00205"></a><span class="lineno"><a class="line" href="classarrow_1_1_floating_point.html"> 205</a></span> <span class="keyword">class </span>ARROW_EXPORT <a class="code" href="classarrow_1_1_floating_point.html">FloatingPoint</a> : <span class="keyword">public</span> <a class="code" href="classarrow_1_1_number.html">Number</a> {</div><div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00207"></a><span class="lineno"> 207</span>  <span class="keyword">using</span> Number::Number;</div><div class="line"><a name="l00208"></a><span class="li neno"><a class="line" href="classarrow_1_1_floating_point.html#aa585c0815b471db6d35d916d9e887b7aa56a099153ea585f17f6040494c0873ac"> 208</a></span>  <span class="keyword">enum</span> <a class="code" href="classarrow_1_1_floating_point.html#aa585c0815b471db6d35d916d9e887b7a">Precision</a> { HALF, <a class="code" href="classarrow_1_1_floating_point.html#aa585c0815b471db6d35d916d9e887b7aa56a099153ea585f17f6040494c0873ac">SINGLE</a>, <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a75397800ad025678ff7803b543d4a183">DOUBLE</a> };</div><div class="line"><a name="l00209"></a><span class="lineno"> 209</span>  <span class="keyword">virtual</span> <a class="code" href="classarrow_1_1_floating_point.html#aa585c0815b471db6d35d916d9e887b7a">Precision</a> precision() <span class="keyword">const</span> = 0;</div><div class="line"><a name="l00210"></a><span class="lineno"> 210</span> };</div><div class="line"><a name="l00211"></a><span class="line no"> 211</span> </div><div class="line"><a name="l00212"></a><span class="lineno"><a class="line" href="classarrow_1_1_nested_type.html"> 212</a></span> <span class="keyword">class </span>ARROW_EXPORT <a class="code" href="classarrow_1_1_nested_type.html">NestedType</a> : <span class="keyword">public</span> <a class="code" href="classarrow_1_1_data_type.html">DataType</a> {</div><div class="line"><a name="l00213"></a><span class="lineno"> 213</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00214"></a><span class="lineno"> 214</span>  <span class="keyword">using</span> <a class="code" href="classarrow_1_1_data_type.html#a1b8a7ece05983649f67396177f40e844">DataType::DataType</a>;</div><div class="line"><a name="l00215"></a><span class="lineno"> 215</span> };</div><div class="line"><a name="l00216"></a><span class="lineno"> 216</span> </div><div class="line"><a name="l00217"></a><span class="lineno"><a class="line" href= "classarrow_1_1_no_extra_meta.html"> 217</a></span> <span class="keyword">class </span><a class="code" href="classarrow_1_1_no_extra_meta.html">NoExtraMeta</a> {};</div><div class="line"><a name="l00218"></a><span class="lineno"> 218</span> </div><div class="line"><a name="l00219"></a><span class="lineno"> 219</span> <span class="comment">// A field is a piece of metadata that includes (for now) a name and a data</span></div><div class="line"><a name="l00220"></a><span class="lineno"> 220</span> <span class="comment">// type</span></div><div class="line"><a name="l00221"></a><span class="lineno"><a class="line" href="classarrow_1_1_field.html"> 221</a></span> <span class="keyword">class </span>ARROW_EXPORT <a class="code" href="classarrow_1_1_field.html">Field</a> {</div><div class="line"><a name="l00222"></a><span class="lineno"> 222</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00223"></a><span class="lineno"><a c lass="line" href="classarrow_1_1_field.html#a0bdd65f719b41328145aaeb9730d5b3c"> 223</a></span>  <a class="code" href="classarrow_1_1_field.html#a0bdd65f719b41328145aaeb9730d5b3c">Field</a>(<span class="keyword">const</span> std::string& name, <span class="keyword">const</span> std::shared_ptr<DataType>& <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44">type</a>,</div><div class="line"><a name="l00224"></a><span class="lineno"> 224</span>  <span class="keywordtype">bool</span> nullable = <span class="keyword">true</span>,</div><div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  <span class="keyword">const</span> std::shared_ptr<const KeyValueMetadata>& metadata = <span class="keyword">nullptr</span>)</div><div class="line"><a name="l00226"></a><span class="lineno"> 226</span>  : name_(name), type_(type), nullable_(nullable), metadata_(metadata) {}</div><div class= "line"><a name="l00227"></a><span class="lineno"> 227</span> </div><div class="line"><a name="l00228"></a><span class="lineno"><a class="line" href="classarrow_1_1_field.html#a899a4cef4c13946c9996095ca53e8004"> 228</a></span>  std::shared_ptr<const KeyValueMetadata> <a class="code" href="classarrow_1_1_field.html#a899a4cef4c13946c9996095ca53e8004">metadata</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> metadata_; }</div><div class="line"><a name="l00229"></a><span class="lineno"> 229</span> </div><div class="line"><a name="l00231"></a><span class="lineno"> 231</span>  <a class="code" href="classarrow_1_1_status.html">Status</a> AddMetadata(<span class="keyword">const</span> std::shared_ptr<const KeyValueMetadata>& metadata,</div><div class="line"><a name="l00232"></a><span class="lineno"> 232</span>  std::shared_ptr<Field>* out) <span class="keyword">const</span>;</div><div class="line"><a name="l00233"></a><span class="lineno"> 233</span> </div><div class="line"><a name="l00234"></a><span class="lineno"> 234</span>  std::shared_ptr<Field> AddMetadata(</div><div class="line"><a name="l00235"></a><span class="lineno"> 235</span>  <span class="keyword">const</span> std::shared_ptr<const KeyValueMetadata>& metadata) <span class="keyword">const</span>;</div><div class="line"><a name="l00236"></a><span class="lineno"> 236</span>  std::shared_ptr<Field> RemoveMetadata() <span class="keyword">const</span>;</div><div class="line"><a name="l00237"></a><span class="lineno"> 237</span> </div><div class="line"><a name="l00238"></a><span class="lineno"> 238</span>  <span class="keywordtype">bool</span> Equals(<span class="keyword">const</span> <a class="code" href="classarrow_1_1_field.html">Field</a>& other) <span class="keyword">const</span>;</div><div class="line"><a name="l00239"></a><span cl ass="lineno"> 239</span>  <span class="keywordtype">bool</span> Equals(<span class="keyword">const</span> std::shared_ptr<Field>& other) <span class="keyword">const</span>;</div><div class="line"><a name="l00240"></a><span class="lineno"> 240</span> </div><div class="line"><a name="l00241"></a><span class="lineno"> 241</span>  std::string ToString() <span class="keyword">const</span>;</div><div class="line"><a name="l00242"></a><span class="lineno"> 242</span> </div><div class="line"><a name="l00243"></a><span class="lineno"><a class="line" href="classarrow_1_1_field.html#ab023b8e5c6d7deff0af5fc757ecaca89"> 243</a></span>  <span class="keyword">const</span> std::string& <a class="code" href="classarrow_1_1_field.html#ab023b8e5c6d7deff0af5fc757ecaca89">name</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> name_; }</div><div class="line"><a name="l00244"></a><span class="lineno"><a class="line" href="clas sarrow_1_1_field.html#a82421c8ae174cbd0c3ef458cf96def42"> 244</a></span>  std::shared_ptr<DataType> <a class="code" href="classarrow_1_1_field.html#a82421c8ae174cbd0c3ef458cf96def42">type</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> type_; }</div><div class="line"><a name="l00245"></a><span class="lineno"><a class="line" href="classarrow_1_1_field.html#aba2045f76a42fe34fd785190af139c25"> 245</a></span>  <span class="keywordtype">bool</span> <a class="code" href="classarrow_1_1_field.html#aba2045f76a42fe34fd785190af139c25">nullable</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> nullable_; }</div><div class="line"><a name="l00246"></a><span class="lineno"> 246</span> </div><div class="line"><a name="l00247"></a><span class="lineno"> 247</span>  <span class="keyword">private</span>:</div><div class="line"><a name="l00248"></a><span class="lineno"> 248</span>  <span class="co mment">// Field name</span></div><div class="line"><a name="l00249"></a><span class="lineno"> 249</span>  std::string name_;</div><div class="line"><a name="l00250"></a><span class="lineno"> 250</span> </div><div class="line"><a name="l00251"></a><span class="lineno"> 251</span>  <span class="comment">// The field's data type</span></div><div class="line"><a name="l00252"></a><span class="lineno"> 252</span>  std::shared_ptr<DataType> type_;</div><div class="line"><a name="l00253"></a><span class="lineno"> 253</span> </div><div class="line"><a name="l00254"></a><span class="lineno"> 254</span>  <span class="comment">// Fields can be nullable</span></div><div class="line"><a name="l00255"></a><span class="lineno"> 255</span>  <span class="keywordtype">bool</span> nullable_;</div><div class="line"><a name="l00256"></a><span class="lineno"> 256</span> </div><div class="line"><a name="l00257"></a><span class="lineno"> 257</ span>  <span class="comment">// The field's metadata, if any</span></div><div class="line"><a name="l00258"></a><span class="lineno"> 258</span>  std::shared_ptr<const KeyValueMetadata> metadata_;</div><div class="line"><a name="l00259"></a><span class="lineno"> 259</span> };</div><div class="line"><a name="l00260"></a><span class="lineno"> 260</span> </div><div class="line"><a name="l00261"></a><span class="lineno"> 261</span> <span class="keyword">namespace </span>detail {</div><div class="line"><a name="l00262"></a><span class="lineno"> 262</span> </div><div class="line"><a name="l00263"></a><span class="lineno"> 263</span> <span class="keyword">template</span> <<span class="keyword">typename</span> DERIVED, <span class="keyword">typename</span> BASE, Type::type TYPE_ID, <span class="keyword">typename</span> C_TYPE></div><div class="line"><a name="l00264"></a><span class="lineno"> 264</span> <span class="keyword">cl ass </span>ARROW_EXPORT CTypeImpl : <span class="keyword">public</span> BASE {</div><div class="line"><a name="l00265"></a><span class="lineno"> 265</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00266"></a><span class="lineno"> 266</span>  <span class="keyword">using</span> c_type = C_TYPE;</div><div class="line"><a name="l00267"></a><span class="lineno"> 267</span>  <span class="keyword">static</span> constexpr <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44">Type::type</a> type_id = TYPE_ID;</div><div class="line"><a name="l00268"></a><span class="lineno"> 268</span> </div><div class="line"><a name="l00269"></a><span class="lineno"> 269</span>  CTypeImpl() : BASE(TYPE_ID) {}</div><div class="line"><a name="l00270"></a><span class="lineno"> 270</span> </div><div class="line"><a name="l00271"></a><span class="lineno"> 271</span>  <span class="keywordtype">int</span> bit_wi dth()<span class="keyword"> const override </span>{ <span class="keywordflow">return</span> <span class="keyword">static_cast<</span><span class="keywordtype">int</span><span class="keyword">></span>(<span class="keyword">sizeof</span>(C_TYPE) * CHAR_BIT); }</div><div class="line"><a name="l00272"></a><span class="lineno"> 272</span> </div><div class="line"><a name="l00273"></a><span class="lineno"> 273</span>  <a class="code" href="classarrow_1_1_status.html">Status</a> Accept(<a class="code" href="classarrow_1_1_type_visitor.html">TypeVisitor</a>* visitor)<span class="keyword"> const override </span>{</div><div class="line"><a name="l00274"></a><span class="lineno"> 274</span>  <span class="keywordflow">return</span> visitor-><a class="code" href="classarrow_1_1_type_visitor.html#a7c55beece55f9c82a191a3667f2ca582">Visit</a>(*static_cast<const DERIVED*>(<span class="keyword">this</span>));</div><div class="line"><a name="l00275"></a><span class= "lineno"> 275</span>  }</div><div class="line"><a name="l00276"></a><span class="lineno"> 276</span> </div><div class="line"><a name="l00277"></a><span class="lineno"> 277</span>  std::string ToString()<span class="keyword"> const override </span>{ <span class="keywordflow">return</span> this->name(); }</div><div class="line"><a name="l00278"></a><span class="lineno"> 278</span> };</div><div class="line"><a name="l00279"></a><span class="lineno"> 279</span> </div><div class="line"><a name="l00280"></a><span class="lineno"> 280</span> <span class="keyword">template</span> <<span class="keyword">typename</span> DERIVED, Type::type TYPE_ID, <span class="keyword">typename</span> C_TYPE></div><div class="line"><a name="l00281"></a><span class="lineno"> 281</span> <span class="keyword">class </span>IntegerTypeImpl : <span class="keyword">public</span> detail::CTypeImpl<DERIVED, Integer, TYPE_ID, C_TYPE> {</div><div class="line"><a name="l00282"></a><span class="lineno"> 282</span>  <span class="keywordtype">bool</span> is_signed()<span class="keyword"> const override </span>{ <span class="keywordflow">return</span> std::is_signed<C_TYPE>::value; }</div><div class="line"><a name="l00283"></a><span class="lineno"> 283</span> };</div><div class="line"><a name="l00284"></a><span class="lineno"> 284</span> </div><div class="line"><a name="l00285"></a><span class="lineno"> 285</span> } <span class="comment">// namespace detail</span></div><div class="line"><a name="l00286"></a><span class="lineno"> 286</span> </div><div class="line"><a name="l00287"></a><span class="lineno"><a class="line" href="classarrow_1_1_null_type.html"> 287</a></span> <span class="keyword">class </span>ARROW_EXPORT <a class="code" href="classarrow_1_1_null_type.html">NullType</a> : <span class="keyword">public</span> <a class="code" href="classarrow_1_1_data_type.html">DataType</a>, <span class="k eyword">public</span> <a class="code" href="classarrow_1_1_no_extra_meta.html">NoExtraMeta</a> {</div><div class="line"><a name="l00288"></a><span class="lineno"> 288</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00289"></a><span class="lineno"><a class="line" href="classarrow_1_1_null_type.html#a9ffc27408dc7cd6f6da501d2e729e2f2"> 289</a></span>  <span class="keyword">static</span> constexpr <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44">Type::type</a> type_id = <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44af46d8600b17dd993097e0875a46e0b15">Type::NA</a>;</div><div class="line"><a name="l00290"></a><span class="lineno"> 290</span> </div><div class="line"><a name="l00291"></a><span class="lineno"><a class="line" href="classarrow_1_1_null_type.html#a283c0b240ce951e478295ed0091cac24"> 291</a></span>  <a class="code" href="classarrow_1_1_null_type.html#a283c0b 240ce951e478295ed0091cac24">NullType</a>() : <a class="code" href="classarrow_1_1_data_type.html">DataType</a>(<a class="code" href="structarrow_1_1_type.html">Type</a>::<a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44af46d8600b17dd993097e0875a46e0b15">NA</a>) {}</div><div class="line"><a name="l00292"></a><span class="lineno"> 292</span> </div><div class="line"><a name="l00293"></a><span class="lineno"> 293</span>  <a class="code" href="classarrow_1_1_status.html">Status</a> Accept(<a class="code" href="classarrow_1_1_type_visitor.html">TypeVisitor</a>* visitor) <span class="keyword">const override</span>;</div><div class="line"><a name="l00294"></a><span class="lineno"> 294</span>  std::string ToString() <span class="keyword">const override</span>;</div><div class="line"><a name="l00295"></a><span class="lineno"> 295</span> </div><div class="line"><a name="l00296"></a><span class="lineno"><a class="line" href="classarrow_1 _1_null_type.html#a656232cfad677aebb79f3147b0acdfb2"> 296</a></span>  std::string <a class="code" href="classarrow_1_1_null_type.html#a656232cfad677aebb79f3147b0acdfb2">name</a>()<span class="keyword"> const override </span>{ <span class="keywordflow">return</span> <span class="stringliteral">"null"</span>; }</div><div class="line"><a name="l00297"></a><span class="lineno"> 297</span> </div><div class="line"><a name="l00298"></a><span class="lineno"> 298</span>  std::vector<BufferDescr> GetBufferLayout() <span class="keyword">const override</span>;</div><div class="line"><a name="l00299"></a><span class="lineno"> 299</span> };</div><div class="line"><a name="l00300"></a><span class="lineno"> 300</span> </div><div class="line"><a name="l00301"></a><span class="lineno"><a class="line" href="classarrow_1_1_boolean_type.html"> 301</a></span> <span class="keyword">class </span>ARROW_EXPORT <a class="code" href="classarrow_1_1_boolean_ type.html">BooleanType</a> : <span class="keyword">public</span> <a class="code" href="classarrow_1_1_fixed_width_type.html">FixedWidthType</a>, <span class="keyword">public</span> <a class="code" href="classarrow_1_1_no_extra_meta.html">NoExtraMeta</a> {</div><div class="line"><a name="l00302"></a><span class="lineno"> 302</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00303"></a><span class="lineno"><a class="line" href="classarrow_1_1_boolean_type.html#a3b6c20930777fca32adce915f024c170"> 303</a></span>  <span class="keyword">static</span> constexpr <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44">Type::type</a> type_id = <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44ae4bb4146eedf3fb5a517780000001b30">Type::BOOL</a>;</div><div class="line"><a name="l00304"></a><span class="lineno"> 304</span> </div><div class="line"><a name="l00305"></a><span class="lineno"><a cla ss="line" href="classarrow_1_1_boolean_type.html#a473f6765f980c0d516dcc48020cf6431"> 305</a></span>  <a class="code" href="classarrow_1_1_boolean_type.html#a473f6765f980c0d516dcc48020cf6431">BooleanType</a>() : <a class="code" href="classarrow_1_1_fixed_width_type.html">FixedWidthType</a>(<a class="code" href="structarrow_1_1_type.html">Type</a>::<a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44ae4bb4146eedf3fb5a517780000001b30">BOOL</a>) {}</div><div class="line"><a name="l00306"></a><span class="lineno"> 306</span> </div><div class="line"><a name="l00307"></a><span class="lineno"> 307</span>  <a class="code" href="classarrow_1_1_status.html">Status</a> Accept(<a class="code" href="classarrow_1_1_type_visitor.html">TypeVisitor</a>* visitor) <span class="keyword">const override</span>;</div><div class="line"><a name="l00308"></a><span class="lineno"> 308</span>  std::string ToString() <span class="keyword">const override</sp an>;</div><div class="line"><a name="l00309"></a><span class="lineno"> 309</span> </div><div class="line"><a name="l00310"></a><span class="lineno"><a class="line" href="classarrow_1_1_boolean_type.html#a0bd78298885aa3b006c8b2155eeb4980"> 310</a></span>  <span class="keywordtype">int</span> <a class="code" href="classarrow_1_1_boolean_type.html#a0bd78298885aa3b006c8b2155eeb4980">bit_width</a>()<span class="keyword"> const override </span>{ <span class="keywordflow">return</span> 1; }</div><div class="line"><a name="l00311"></a><span class="lineno"><a class="line" href="classarrow_1_1_boolean_type.html#acedbda0c2af8b37046cc475a44b8fe3b"> 311</a></span>  std::string <a class="code" href="classarrow_1_1_boolean_type.html#acedbda0c2af8b37046cc475a44b8fe3b">name</a>()<span class="keyword"> const override </span>{ <span class="keywordflow">return</span> <span class="stringliteral">"bool"</span>; }</div><div class="line"><a name="l00312"></a><span class="linen o"> 312</span> };</div><div class="line"><a name="l00313"></a><span class="lineno"> 313</span> </div><div class="line"><a name="l00314"></a><span class="lineno"><a class="line" href="classarrow_1_1_u_int8_type.html"> 314</a></span> <span class="keyword">class </span>ARROW_EXPORT <a class="code" href="classarrow_1_1_u_int8_type.html">UInt8Type</a></div><div class="line"><a name="l00315"></a><span class="lineno"> 315</span>  : <span class="keyword">public</span> detail::IntegerTypeImpl<UInt8Type, Type::UINT8, uint8_t> {</div><div class="line"><a name="l00316"></a><span class="lineno"> 316</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00317"></a><span class="lineno"><a class="line" href="classarrow_1_1_u_int8_type.html#ab10fbfb837fe182ca0189765b013de09"> 317</a></span>  std::string <a class="code" href="classarrow_1_1_u_int8_type.html#ab10fbfb837fe182ca0189765b013de09">name</a>()<span class="keyword"> const o verride </span>{ <span class="keywordflow">return</span> <span class="stringliteral">"uint8"</span>; }</div><div class="line"><a name="l00318"></a><span class="lineno"> 318</span> };</div><div class="line"><a name="l00319"></a><span class="lineno"> 319</span> </div><div class="line"><a name="l00320"></a><span class="lineno"><a class="line" href="classarrow_1_1_int8_type.html"> 320</a></span> <span class="keyword">class </span>ARROW_EXPORT <a class="code" href="classarrow_1_1_int8_type.html">Int8Type</a></div><div class="line"><a name="l00321"></a><span class="lineno"> 321</span>  : <span class="keyword">public</span> detail::IntegerTypeImpl<Int8Type, Type::INT8, int8_t> {</div><div class="line"><a name="l00322"></a><span class="lineno"> 322</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00323"></a><span class="lineno"><a class="line" href="classarrow_1_1_int8_type.html#a64523102f018c4e33dd855e00951f14f"> 323</a></span>  std::string <a class="code" href="classarrow_1_1_int8_type.html#a64523102f018c4e33dd855e00951f14f">name</a>()<span class="keyword"> const override </span>{ <span class="keywordflow">return</span> <span class="stringliteral">"int8"</span>; }</div><div class="line"><a name="l00324"></a><span class="lineno"> 324</span> };</div><div class="line"><a name="l00325"></a><span class="lineno"> 325</span> </div><div class="line"><a name="l00326"></a><span class="lineno"><a class="line" href="classarrow_1_1_u_int16_type.html"> 326</a></span> <span class="keyword">class </span>ARROW_EXPORT <a class="code" href="classarrow_1_1_u_int16_type.html">UInt16Type</a></div><div class="line"><a name="l00327"></a><span class="lineno"> 327</span>  : <span class="keyword">public</span> detail::IntegerTypeImpl<UInt16Type, Type::UINT16, uint16_t> {</div><div class="line"><a name="l00328"></a><span class="lineno"> 328</span>  <span class=" keyword">public</span>:</div><div class="line"><a name="l00329"></a><span class="lineno"><a class="line" href="classarrow_1_1_u_int16_type.html#ac0d0b0576ac723ce83867fc959faba91"> 329</a></span>  std::string <a class="code" href="classarrow_1_1_u_int16_type.html#ac0d0b0576ac723ce83867fc959faba91">name</a>()<span class="keyword"> const override </span>{ <span class="keywordflow">return</span> <span class="stringliteral">"uint16"</span>; }</div><div class="line"><a name="l00330"></a><span class="lineno"> 330</span> };</div><div class="line"><a name="l00331"></a><span class="lineno"> 331</span> </div><div class="line"><a name="l00332"></a><span class="lineno"><a class="line" href="classarrow_1_1_int16_type.html"> 332</a></span> <span class="keyword">class </span>ARROW_EXPORT <a class="code" href="classarrow_1_1_int16_type.html">Int16Type</a></div><div class="line"><a name="l00333"></a><span class="lineno"> 333</span>  : <span class="keyword"> public</span> detail::IntegerTypeImpl<Int16Type, Type::INT16, int16_t> {</div><div class="line"><a name="l00334"></a><span class="lineno"> 334</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00335"></a><span class="lineno"><a class="line" href="classarrow_1_1_int16_type.html#a4fa0ae88c35e20ee007c1eac2b42bd52"> 335</a></span>  std::string <a class="code" href="classarrow_1_1_int16_type.html#a4fa0ae88c35e20ee007c1eac2b42bd52">name</a>()<span class="keyword"> const override </span>{ <span class="keywordflow">return</span> <span class="stringliteral">"int16"</span>; }</div><div class="line"><a name="l00336"></a><span class="lineno"> 336</span> };</div><div class="line"><a name="l00337"></a><span class="lineno"> 337</span> </div><div class="line"><a name="l00338"></a><span class="lineno"><a class="line" href="classarrow_1_1_u_int32_type.html"> 338</a></span> <span class="keyword">class </span>ARROW_EXPORT <a cla ss="code" href="classarrow_1_1_u_int32_type.html">UInt32Type</a></div><div class="line"><a name="l00339"></a><span class="lineno"> 339</span>  : <span class="keyword">public</span> detail::IntegerTypeImpl<UInt32Type, Type::UINT32, uint32_t> {</div><div class="line"><a name="l00340"></a><span class="lineno"> 340</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00341"></a><span class="lineno"><a class="line" href="classarrow_1_1_u_int32_type.html#ae3b0c563274e9d75001ecdce5c20cd24"> 341</a></span>  std::string <a class="code" href="classarrow_1_1_u_int32_type.html#ae3b0c563274e9d75001ecdce5c20cd24">name</a>()<span class="keyword"> const override </span>{ <span class="keywordflow">return</span> <span class="stringliteral">"uint32"</span>; }</div><div class="line"><a name="l00342"></a><span class="lineno"> 342</span> };</div><div class="line"><a name="l00343"></a><span class="lineno"> 343</span> </div><div cla ss="line"><a name="l00344"></a><span class="lineno"><a class="line" href="classarrow_1_1_int32_type.html"> 344</a></span> <span class="keyword">class </span>ARROW_EXPORT <a class="code" href="classarrow_1_1_int32_type.html">Int32Type</a></div><div class="line"><a name="l00345"></a><span class="lineno"> 345</span>  : <span class="keyword">public</span> detail::IntegerTypeImpl<Int32Type, Type::INT32, int32_t> {</div><div class="line"><a name="l00346"></a><span class="lineno"> 346</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00347"></a><span class="lineno"><a class="line" href="classarrow_1_1_int32_type.html#a3e81d450a3667605e9ac2e375fe27256"> 347</a></span>  std::string <a class="code" href="classarrow_1_1_int32_type.html#a3e81d450a3667605e9ac2e375fe27256">name</a>()<span class="keyword"> const override </span>{ <span class="keywordflow">return</span> <span class="stringliteral">"int32"</span>; }</div><div cl ass="line"><a name="l00348"></a><span class="lineno"> 348</span> };</div><div class="line"><a name="l00349"></a><span class="lineno"> 349</span> </div><div class="line"><a name="l00350"></a><span class="lineno"><a class="line" href="classarrow_1_1_u_int64_type.html"> 350</a></span> <span class="keyword">class </span>ARROW_EXPORT <a class="code" href="classarrow_1_1_u_int64_type.html">UInt64Type</a></div><div class="line"><a name="l00351"></a><span class="lineno"> 351</span>  : <span class="keyword">public</span> detail::IntegerTypeImpl<UInt64Type, Type::UINT64, uint64_t> {</div><div class="line"><a name="l00352"></a><span class="lineno"> 352</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00353"></a><span class="lineno"><a class="line" href="classarrow_1_1_u_int64_type.html#aa82cb17b8c28a1839c5517169e0d68b5"> 353</a></span>  std::string <a class="code" href="classarrow_1_1_u_int64_type.html#aa82cb17b8c28a183 9c5517169e0d68b5">name</a>()<span class="keyword"> const override </span>{ <span class="keywordflow">return</span> <span class="stringliteral">"uint64"</span>; }</div><div class="line"><a name="l00354"></a><span class="lineno"> 354</span> };</div><div class="line"><a name="l00355"></a><span class="lineno"> 355</span> </div><div class="line"><a name="l00356"></a><span class="lineno"><a class="line" href="classarrow_1_1_int64_type.html"> 356</a></span> <span class="keyword">class </span>ARROW_EXPORT <a class="code" href="classarrow_1_1_int64_type.html">Int64Type</a></div><div class="line"><a name="l00357"></a><span class="lineno"> 357</span>  : <span class="keyword">public</span> detail::IntegerTypeImpl<Int64Type, Type::INT64, int64_t> {</div><div class="line"><a name="l00358"></a><span class="lineno"> 358</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00359"></a><span class="lineno"><a class="line" href=" classarrow_1_1_int64_type.html#a3feadbb1be919553e5dc3c4d042eb66b"> 359</a></span>  std::string <a class="code" href="classarrow_1_1_int64_type.html#a3feadbb1be919553e5dc3c4d042eb66b">name</a>()<span class="keyword"> const override </span>{ <span class="keywordflow">return</span> <span class="stringliteral">"int64"</span>; }</div><div class="line"><a name="l00360"></a><span class="lineno"> 360</span> };</div><div class="line"><a name="l00361"></a><span class="lineno"> 361</span> </div><div class="line"><a name="l00362"></a><span class="lineno"><a class="line" href="classarrow_1_1_half_float_type.html"> 362</a></span> <span class="keyword">class </span>ARROW_EXPORT <a class="code" href="classarrow_1_1_half_float_type.html">HalfFloatType</a></div><div class="line"><a name="l00363"></a><span class="lineno"> 363</span>  : <span class="keyword">public</span> detail::CTypeImpl<HalfFloatType, FloatingPoint, Type::HALF_FLOAT, uint16_t> {</div ><div class="line"><a name="l00364"></a><span class="lineno"> >364</span>  <span class="keyword">public</span>:</div><div >class="line"><a name="l00365"></a><span class="lineno"> 365</span>  <a >class="code" >href="classarrow_1_1_floating_point.html#aa585c0815b471db6d35d916d9e887b7a">Precision</a> > precision() <span class="keyword">const override</span>;</div><div >class="line"><a name="l00366"></a><span class="lineno"><a class="line" >href="classarrow_1_1_half_float_type.html#a01f51ed7d5bc4bce7b604a80d011a742"> > 366</a></span>  std::string <a class="code" >href="classarrow_1_1_half_float_type.html#a01f51ed7d5bc4bce7b604a80d011a742">name</a>()<span > class="keyword"> const override </span>{ <span >class="keywordflow">return</span> <span >class="stringliteral">"halffloat"</span>; }</div><div >class="line"><a name="l00367"></a><span class="lineno"> >367</span> };</div><div class="line"><a name="l00368"></a><span >class="lineno"> 368</span> </div><div class="l ine"><a name="l00369"></a><span class="lineno"><a class="line" href="classarrow_1_1_float_type.html"> 369</a></span> <span class="keyword">class </span>ARROW_EXPORT <a class="code" href="classarrow_1_1_float_type.html">FloatType</a></div><div class="line"><a name="l00370"></a><span class="lineno"> 370</span>  : <span class="keyword">public</span> detail::CTypeImpl<FloatType, FloatingPoint, Type::FLOAT, float> {</div><div class="line"><a name="l00371"></a><span class="lineno"> 371</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00372"></a><span class="lineno"> 372</span>  <a class="code" href="classarrow_1_1_floating_point.html#aa585c0815b471db6d35d916d9e887b7a">Precision</a> precision() <span class="keyword">const override</span>;</div><div class="line"><a name="l00373"></a><span class="lineno"><a class="line" href="classarrow_1_1_float_type.html#a7f4f1dc23a47224373466077d141cf25"> 373</a></span>  std::string <a class="code" href="classarrow_1_1_float_type.html#a7f4f1dc23a47224373466077d141cf25">name</a>()<span class="keyword"> const override </span>{ <span class="keywordflow">return</span> <span class="stringliteral">"float"</span>; }</div><div class="line"><a name="l00374"></a><span class="lineno"> 374</span> };</div><div class="line"><a name="l00375"></a><span class="lineno"> 375</span> </div><div class="line"><a name="l00376"></a><span class="lineno"><a class="line" href="classarrow_1_1_double_type.html"> 376</a></span> <span class="keyword">class </span>ARROW_EXPORT <a class="code" href="classarrow_1_1_double_type.html">DoubleType</a></div><div class="line"><a name="l00377"></a><span class="lineno"> 377</span>  : <span class="keyword">public</span> detail::CTypeImpl<DoubleType, FloatingPoint, Type::DOUBLE, double> {</div><div class="line"><a name="l00378"></a><span class="lineno"> 378</span>  <span class="keyword">public</span>:</div><di v class="line"><a name="l00379"></a><span class="lineno"> 379</span>  <a class="code" href="classarrow_1_1_floating_point.html#aa585c0815b471db6d35d916d9e887b7a">Precision</a> precision() <span class="keyword">const override</span>;</div><div class="line"><a name="l00380"></a><span class="lineno"><a class="line" href="classarrow_1_1_double_type.html#a2ae00dcf3116eddf0b03bd0bf9b71d10"> 380</a></span>  std::string <a class="code" href="classarrow_1_1_double_type.html#a2ae00dcf3116eddf0b03bd0bf9b71d10">name</a>()<span class="keyword"> const override </span>{ <span class="keywordflow">return</span> <span class="stringliteral">"double"</span>; }</div><div class="line"><a name="l00381"></a><span class="lineno"> 381</span> };</div><div class="line"><a name="l00382"></a><span class="lineno"> 382</span> </div><div class="line"><a name="l00383"></a><span class="lineno"><a class="line" href="classarrow_1_1_list_type.html"> 383</a></span> <span class="k eyword">class </span>ARROW_EXPORT <a class="code" href="classarrow_1_1_list_type.html">ListType</a> : <span class="keyword">public</span> <a class="code" href="classarrow_1_1_nested_type.html">NestedType</a> {</div><div class="line"><a name="l00384"></a><span class="lineno"> 384</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00385"></a><span class="lineno"><a class="line" href="classarrow_1_1_list_type.html#adf15465afd0a2d3b4d32afe98d82a799"> 385</a></span>  <span class="keyword">static</span> constexpr <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44">Type::type</a> type_id = <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44ad074f9c02567b5945293b9114f84f210">Type::LIST</a>;</div><div class="line"><a name="l00386"></a><span class="lineno"> 386</span> </div><div class="line"><a name="l00387"></a><span class="lineno"> 387</span>  <span class="comment">// List can c ontain any other logical value type</span></div><div class="line"><a name="l00388"></a><span class="lineno"><a class="line" href="classarrow_1_1_list_type.html#ab2b8aa644656466440477e285ebe3111"> 388</a></span>  <span class="keyword">explicit</span> <a class="code" href="classarrow_1_1_list_type.html#ab2b8aa644656466440477e285ebe3111">ListType</a>(<span class="keyword">const</span> std::shared_ptr<DataType>& value_type)</div><div class="line"><a name="l00389"></a><span class="lineno"> 389</span>  : <a class="code" href="classarrow_1_1_list_type.html">ListType</a>(std::make_shared<<a class="code" href="classarrow_1_1_field.html">Field</a>>(<span class="stringliteral">"item"</span>, value_type)) {}</div><div class="line"><a name="l00390"></a><span class="lineno"> 390</span> </div><div class="line"><a name="l00391"></a><span class="lineno"><a class="line" href="classarrow_1_1_list_type.html#abee8a3b58f1d7e05ba474fd5225e699b"> 391</a></ span>  <span class="keyword">explicit</span> <a class="code" href="classarrow_1_1_list_type.html#abee8a3b58f1d7e05ba474fd5225e699b">ListType</a>(<span class="keyword">const</span> std::shared_ptr<Field>& value_field) : <a class="code" href="classarrow_1_1_nested_type.html">NestedType</a>(<a class="code" href="structarrow_1_1_type.html">Type</a>::<a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44ad074f9c02567b5945293b9114f84f210">LIST</a>) {</div><div class="line"><a name="l00392"></a><span class="lineno"> 392</span>  children_ = {value_field};</div><div class="line"><a name="l00393"></a><span class="lineno"> 393</span>  }</div><div class="line"><a name="l00394"></a><span class="lineno"> 394</span> </div><div class="line"><a name="l00395"></a><span class="lineno"><a class="line" href="classarrow_1_1_list_type.html#a0f046f1e52f1bfb045cab5f0a9d839d7"> 395</a></span>  std::shared_ptr<Field> <a class="code" href="classarrow_1_1_list_type.html#a0f046f1e52f1bfb045cab5f0a9d839d7">value_field</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> children_[0]; }</div><div class="line"><a name="l00396"></a><span class="lineno"> 396</span> </div><div class="line"><a name="l00397"></a><span class="lineno"><a class="line" href="classarrow_1_1_list_type.html#a19eb7a5e1c98215a1afbadaa4eaa0deb"> 397</a></span>  std::shared_ptr<DataType> <a class="code" href="classarrow_1_1_list_type.html#a19eb7a5e1c98215a1afbadaa4eaa0deb">value_type</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> children_[0]->type(); }</div><div class="line"><a name="l00398"></a><span class="lineno"> 398</span> </div><div class="line"><a name="l00399"></a><span class="lineno"> 399</span>  <a class="code" href="classarrow_1_1_status.html">Status</a> Accept(<a class="code" href="classarrow_1_1_type_visitor.html">TypeVisitor</a>* visi tor) <span class="keyword">const override</span>;</div><div class="line"><a name="l00400"></a><span class="lineno"> 400</span>  std::string ToString() <span class="keyword">const override</span>;</div><div class="line"><a name="l00401"></a><span class="lineno"> 401</span> </div><div class="line"><a name="l00402"></a><span class="lineno"><a class="line" href="classarrow_1_1_list_type.html#a6320a08c4881865abcac2fdeab4fb0a2"> 402</a></span>  std::string <a class="code" href="classarrow_1_1_list_type.html#a6320a08c4881865abcac2fdeab4fb0a2">name</a>()<span class="keyword"> const override </span>{ <span class="keywordflow">return</span> <span class="stringliteral">"list"</span>; }</div><div class="line"><a name="l00403"></a><span class="lineno"> 403</span> </div><div class="line"><a name="l00404"></a><span class="lineno"> 404</span>  std::vector<BufferDescr> GetBufferLayout() <span class="keyword">const override</span>;</div><div class="lin e"><a name="l00405"></a><span class="lineno"> 405</span> };</div><div class="line"><a name="l00406"></a><span class="lineno"> 406</span> </div><div class="line"><a name="l00407"></a><span class="lineno"> 407</span> <span class="comment">// BinaryType type is represents lists of 1-byte values.</span></div><div class="line"><a name="l00408"></a><span class="lineno"><a class="line" href="classarrow_1_1_binary_type.html"> 408</a></span> <span class="keyword">class </span>ARROW_EXPORT <a class="code" href="classarrow_1_1_binary_type.html">BinaryType</a> : <span class="keyword">public</span> <a class="code" href="classarrow_1_1_data_type.html">DataType</a>, <span class="keyword">public</span> <a class="code" href="classarrow_1_1_no_extra_meta.html">NoExtraMeta</a> {</div><div class="line"><a name="l00409"></a><span class="lineno"> 409</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00410"></a><span class="lineno"><a class="line" href="classarrow_1_1_binary_type.html#ad80bf06cffec1a067ded02d208985e19"> 410</a></span>  <span class="keyword">static</span> constexpr <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44">Type::type</a> type_id = <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a442cc62761c7e5a83d26da4d3ed2fe01">Type::BINARY</a>;</div><div class="line"><a name="l00411"></a><span class="lineno"> 411</span> </div><div class="line"><a name="l00412"></a><span class="lineno"><a class="line" href="classarrow_1_1_binary_type.html#a38d8b09303796253fe22a85a50d03224"> 412</a></span>  <a class="code" href="classarrow_1_1_binary_type.html#a38d8b09303796253fe22a85a50d03224">BinaryType</a>() : <a class="code" href="classarrow_1_1_binary_type.html">BinaryType</a>(<a class="code" href="structarrow_1_1_type.html">Type</a>::<a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a442cc62761c7e5a83d26da4d3ed2fe0 1">BINARY</a>) {}</div><div class="line"><a name="l00413"></a><span class="lineno"> 413</span> </div><div class="line"><a name="l00414"></a><span class="lineno"> 414</span>  <a class="code" href="classarrow_1_1_status.html">Status</a> Accept(<a class="code" href="classarrow_1_1_type_visitor.html">TypeVisitor</a>* visitor) <span class="keyword">const override</span>;</div><div class="line"><a name="l00415"></a><span class="lineno"> 415</span>  std::string ToString() <span class="keyword">const override</span>;</div><div class="line"><a name="l00416"></a><span class="lineno"><a class="line" href="classarrow_1_1_binary_type.html#a4c345ca9ef34a6099b29c3e694bedae3"> 416</a></span>  std::string <a class="code" href="classarrow_1_1_binary_type.html#a4c345ca9ef34a6099b29c3e694bedae3">name</a>()<span class="keyword"> const override </span>{ <span class="keywordflow">return</span> <span class="stringliteral">"binary"</span>; }</div><div class="line"><a nam e="l00417"></a><span class="lineno"> 417</span> </div><div class="line"><a name="l00418"></a><span class="lineno"> 418</span>  std::vector<BufferDescr> GetBufferLayout() <span class="keyword">const override</span>;</div><div class="line"><a name="l00419"></a><span class="lineno"> 419</span> </div><div class="line"><a name="l00420"></a><span class="lineno"> 420</span>  <span class="keyword">protected</span>:</div><div class="line"><a name="l00421"></a><span class="lineno"> 421</span>  <span class="comment">// Allow subclasses to change the logical type.</span></div><div class="line"><a name="l00422"></a><span class="lineno"><a class="line" href="classarrow_1_1_binary_type.html#a678c380577aca8bd39edbcf02842a61c"> 422</a></span>  <span class="keyword">explicit</span> <a class="code" href="classarrow_1_1_binary_type.html#a678c380577aca8bd39edbcf02842a61c">BinaryType</a>(<a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7 d4bf1f44">Type::type</a> logical_type) : <a class="code" href="classarrow_1_1_data_type.html">DataType</a>(logical_type) {}</div><div class="line"><a name="l00423"></a><span class="lineno"> 423</span> };</div><div class="line"><a name="l00424"></a><span class="lineno"> 424</span> </div><div class="line"><a name="l00425"></a><span class="lineno"> 425</span> <span class="comment">// BinaryType type is represents lists of 1-byte values.</span></div><div class="line"><a name="l00426"></a><span class="lineno"><a class="line" href="classarrow_1_1_fixed_size_binary_type.html"> 426</a></span> <span class="keyword">class </span>ARROW_EXPORT <a class="code" href="classarrow_1_1_fixed_size_binary_type.html">FixedSizeBinaryType</a> : <span class="keyword">public</span> <a class="code" href="classarrow_1_1_fixed_width_type.html">FixedWidthType</a> {</div><div class="line"><a name="l00427"></a><span class="lineno"> 427</span>  <span class="keyword">public</span>:</di v><div class="line"><a name="l00428"></a><span class="lineno"><a class="line" href="classarrow_1_1_fixed_size_binary_type.html#a81bf6bef1117f7ecad1c529ccab4984e"> 428</a></span>  <span class="keyword">static</span> constexpr <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44">Type::type</a> type_id = <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a1b3f48148c5ff94c039d09ff689da179">Type::FIXED_SIZE_BINARY</a>;</div><div class="line"><a name="l00429"></a><span class="lineno"> 429</span> </div><div class="line"><a name="l00430"></a><span class="lineno"><a class="line" href="classarrow_1_1_fixed_size_binary_type.html#a0a6a0f0fed4fbaafaff6d6c74569d5ac"> 430</a></span>  <span class="keyword">explicit</span> <a class="code" href="classarrow_1_1_fixed_size_binary_type.html#a0a6a0f0fed4fbaafaff6d6c74569d5ac">FixedSizeBinaryType</a>(int32_t byte_width)</div><div class="line"><a name="l00431"></a><span class=" lineno"> 431</span>  : <a class="code" href="classarrow_1_1_fixed_width_type.html">FixedWidthType</a>(<a class="code" href="structarrow_1_1_type.html">Type</a>::<a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a1b3f48148c5ff94c039d09ff689da179">FIXED_SIZE_BINARY</a>), byte_width_(byte_width) {}</div><div class="line"><a name="l00432"></a><span class="lineno"><a class="line" href="classarrow_1_1_fixed_size_binary_type.html#ad4c4abc8b62e48081ccf64e7cc01cf05"> 432</a></span>  <span class="keyword">explicit</span> <a class="code" href="classarrow_1_1_fixed_size_binary_type.html#ad4c4abc8b62e48081ccf64e7cc01cf05">FixedSizeBinaryType</a>(int32_t byte_width, <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44">Type::type</a> type_id)</div><div class="line"><a name="l00433"></a><span class="lineno"> 433</span>  : <a class="code" href="classarrow_1_1_fixed_width_type.html">FixedWidthType</a>(type_id), byte_width_(byte_width) {}</div><div class="line"><a name="l00434"></a><span class="lineno"> 434</span> </div><div class="line"><a name="l00435"></a><span class="lineno"> 435</span>  <a class="code" href="classarrow_1_1_status.html">Status</a> Accept(<a class="code" href="classarrow_1_1_type_visitor.html">TypeVisitor</a>* visitor) <span class="keyword">const override</span>;</div><div class="line"><a name="l00436"></a><span class="lineno"> 436</span>  std::string ToString() <span class="keyword">const override</span>;</div><div class="line"><a name="l00437"></a><span class="lineno"><a class="line" href="classarrow_1_1_fixed_size_binary_type.html#af533276c83d45b5cefa826a169bef6c7"> 437</a></span>  std::string <a class="code" href="classarrow_1_1_fixed_size_binary_type.html#af533276c83d45b5cefa826a169bef6c7">name</a>()<span class="keyword"> const override </span>{ <span class="keywordflow">return</span> <span class="stringliteral">"fixed_size_binary&quo t;</span>; }</div><div class="line"><a name="l00438"></a><span class="lineno"> 438</span> </div><div class="line"><a name="l00439"></a><span class="lineno"> 439</span>  std::vector<BufferDescr> GetBufferLayout() <span class="keyword">const override</span>;</div><div class="line"><a name="l00440"></a><span class="lineno"> 440</span> </div><div class="line"><a name="l00441"></a><span class="lineno"><a class="line" href="classarrow_1_1_fixed_size_binary_type.html#a684663b4cfeedd523eece039c6c0955a"> 441</a></span>  int32_t <a class="code" href="classarrow_1_1_fixed_size_binary_type.html#a684663b4cfeedd523eece039c6c0955a">byte_width</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> byte_width_; }</div><div class="line"><a name="l00442"></a><span class="lineno"> 442</span>  <span class="keywordtype">int</span> bit_width() <span class="keyword">const override</span>;</div><div class="line"><a name="l00443"></a><span cl ass="lineno"> 443</span> </div><div class="line"><a name="l00444"></a><span class="lineno"> 444</span>  <span class="keyword">protected</span>:</div><div class="line"><a name="l00445"></a><span class="lineno"><a class="line" href="classarrow_1_1_fixed_size_binary_type.html#a2dfa5ac6ba9a94d355533f5b23a7b1bc"> 445</a></span>  int32_t <a class="code" href="classarrow_1_1_fixed_size_binary_type.html#a2dfa5ac6ba9a94d355533f5b23a7b1bc">byte_width_</a>;</div><div class="line"><a name="l00446"></a><span class="lineno"> 446</span> };</div><div class="line"><a name="l00447"></a><span class="lineno"> 447</span> </div><div class="line"><a name="l00448"></a><span class="lineno"> 448</span> <span class="comment">// UTF-8 encoded strings</span></div><div class="line"><a name="l00449"></a><span class="lineno"><a class="line" href="classarrow_1_1_string_type.html"> 449</a></span> <span class="keyword">class </span>ARROW_EXPORT <a class="code" href="classarr ow_1_1_string_type.html">StringType</a> : <span class="keyword">public</span> <a class="code" href="classarrow_1_1_binary_type.html">BinaryType</a> {</div><div class="line"><a name="l00450"></a><span class="lineno"> 450</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00451"></a><span class="lineno"><a class="line" href="classarrow_1_1_string_type.html#a310bfaefc36fe1eab6c864f777b4459a"> 451</a></span>  <span class="keyword">static</span> constexpr <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44">Type::type</a> type_id = <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a864933bd7cdfa63ea75498c34db6545f">Type::STRING</a>;</div
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