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Posted to commits@arrow.apache.org by we...@apache.org on 2018/08/07 01:02:23 UTC

[08/51] [partial] arrow-site git commit: Update documentation for 0.10.0

http://git-wip-us.apache.org/repos/asf/arrow-site/blob/7f9d5fdc/docs/cpp/helpers_8h.html
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diff --git a/docs/cpp/helpers_8h.html b/docs/cpp/helpers_8h.html
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@@ -97,9 +97,9 @@ Namespaces</h2></td></tr>
 Functions</h2></td></tr>
 <tr class="memitem:a8949b2e5469221ad1b1eaf8665b9610b"><td class="memItemLeft" align="right" valign="top">std::shared_ptr&lt; DataType &gt;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="namespacearrow_1_1py.html#a8949b2e5469221ad1b1eaf8665b9610b">arrow::py::GetPrimitiveType</a> (Type::type type)</td></tr>
 <tr class="separator:a8949b2e5469221ad1b1eaf8665b9610b"><td class="memSeparator" colspan="2">&#160;</td></tr>
-<tr class="memitem:a60d1f752dfe2f3bbfa942c834ee607e0"><td class="memItemLeft" align="right" valign="top">PyObject *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="namespacearrow_1_1py.html#a60d1f752dfe2f3bbfa942c834ee607e0">arrow::py::PyHalf_FromHalf</a> (npy_half value)</td></tr>
+<tr class="memitem:a60d1f752dfe2f3bbfa942c834ee607e0"><td class="memItemLeft" align="right" valign="top"><a class="el" href="python__to__arrow_8h.html#ae19630c1f4ca6d5236b30719d9140013">PyObject</a> *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="namespacearrow_1_1py.html#a60d1f752dfe2f3bbfa942c834ee607e0">arrow::py::PyHalf_FromHalf</a> (npy_half value)</td></tr>
 <tr class="separator:a60d1f752dfe2f3bbfa942c834ee607e0"><td class="memSeparator" colspan="2">&#160;</td></tr>
-<tr class="memitem:a52122657a994c78624f7e83ccaae30af"><td class="memItemLeft" align="right" valign="top">Status&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="namespacearrow_1_1py.html#a52122657a994c78624f7e83ccaae30af">arrow::py::PyFloat_AsHalf</a> (PyObject *obj, npy_half *out)</td></tr>
+<tr class="memitem:a52122657a994c78624f7e83ccaae30af"><td class="memItemLeft" align="right" valign="top">Status&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="namespacearrow_1_1py.html#a52122657a994c78624f7e83ccaae30af">arrow::py::PyFloat_AsHalf</a> (<a class="el" href="python__to__arrow_8h.html#ae19630c1f4ca6d5236b30719d9140013">PyObject</a> *obj, npy_half *out)</td></tr>
 <tr class="separator:a52122657a994c78624f7e83ccaae30af"><td class="memSeparator" colspan="2">&#160;</td></tr>
 </table>
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http://git-wip-us.apache.org/repos/asf/arrow-site/blob/7f9d5fdc/docs/cpp/helpers_8h_source.html
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diff --git a/docs/cpp/helpers_8h_source.html b/docs/cpp/helpers_8h_source.html
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--- a/docs/cpp/helpers_8h_source.html
+++ b/docs/cpp/helpers_8h_source.html
@@ -70,14 +70,16 @@ $(function() {
 <div class="title">helpers.h</div>  </div>
 </div><!--header-->
 <div class="contents">
-<a href="helpers_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>&#160;<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>&#160;<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>&#160;<span class="comment">// distributed with this work for additional information</span></div><div class="line"><a name="l00004"></a><span class="lineno">    4</span>&#160;<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>&#160;<span class="comment">// to you under the Apache License, Version 2.0 (the</span></div><div class="line"><a name="l00006"></a><span class
 ="lineno">    6</span>&#160;<span class="comment">// &quot;License&quot;); you may not use this file except in compliance</span></div><div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160;<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>&#160;<span class="comment">//</span></div><div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160;<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>&#160;<span class="comment">//</span></div><div class="line"><a name="l00011"></a><span class="lineno">   11</span>&#160;<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>&#160;<span class="comment">// software distributed u
 nder the License is distributed on an</span></div><div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;<span class="comment">// &quot;AS IS&quot; BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY</span></div><div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160;<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>&#160;<span class="comment">// specific language governing permissions and limitations</span></div><div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160;<span class="comment">// under the License.</span></div><div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;</div><div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;<span class="preprocessor">#ifndef ARROW_PYTHON_HELPERS_H</span></div><div class="line"><a name="l00019"></a><span class="linen
 o">   19</span>&#160;<span class="preprocessor">#define ARROW_PYTHON_HELPERS_H</span></div><div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;</div><div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="platform_8h.html">arrow/python/platform.h</a>&quot;</span></div><div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;</div><div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;<span class="preprocessor">#include &lt;limits&gt;</span></div><div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;<span class="preprocessor">#include &lt;memory&gt;</span></div><div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;<span class="preprocessor">#include &lt;string&gt;</span></div><div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;<span class="preprocessor">#inc
 lude &lt;utility&gt;</span></div><div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;</div><div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;<span class="preprocessor">#include &lt;numpy/halffloat.h&gt;</span></div><div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;</div><div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="type_8h.html">arrow/type.h</a>&quot;</span></div><div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="macros_8h.html">arrow/util/macros.h</a>&quot;</span></div><div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="visibility_8h.html">arrow/util/visibility.h</a>&quot;</span></div><div class="line"><a name="l00033"></a><span 
 class="lineno">   33</span>&#160;</div><div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;<span class="keyword">namespace </span><a class="code" href="namespacearrow.html">arrow</a> {</div><div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;</div><div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;<span class="keyword">namespace </span>py {</div><div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;</div><div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;<span class="keyword">class </span>OwnedRef;</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="comment">// \brief Get an arrow DataType instance from Arrow&#39;s Type::type enum</span></div><div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;<span clas
 s="comment">// \param[in] type One of the values of Arrow&#39;s Type::type enum</span></div><div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;<span class="comment">// \return A shared pointer to DataType</span></div><div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160;ARROW_EXPORT std::shared_ptr&lt;DataType&gt; <a class="code" href="namespacearrow_1_1py.html#a8949b2e5469221ad1b1eaf8665b9610b">GetPrimitiveType</a>(<a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44">Type::type</a> type);</div><div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;</div><div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;<span class="comment">// \brief Construct a np.float16 object from a npy_half value.</span></div><div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;ARROW_EXPORT PyObject* <a class="code" href="namespacearrow_1_1py.html#a60d1f75
 2dfe2f3bbfa942c834ee607e0">PyHalf_FromHalf</a>(npy_half value);</div><div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;</div><div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;<span class="comment">// \brief Convert a Python object to a npy_half value.</span></div><div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;ARROW_EXPORT Status <a class="code" href="namespacearrow_1_1py.html#a52122657a994c78624f7e83ccaae30af">PyFloat_AsHalf</a>(PyObject* obj, npy_half* out);</div><div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;</div><div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;<span class="keyword">namespace </span>internal {</div><div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160;</div><div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160;<span class="comment">// \brief Import a Python module</span><
 /div><div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;<span class="comment">// \param[in] module_name The name of the module</span></div><div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;<span class="comment">// \param[out] ref The OwnedRef containing the module PyObject*</span></div><div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;Status ImportModule(<span class="keyword">const</span> std::string&amp; module_name, OwnedRef* ref);</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="comment">// \brief Import an object from a Python module</span></div><div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;<span class="comment">// \param[in] module A Python module</span></div><div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;
 <span class="comment">// \param[in] name The name of the object to import</span></div><div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;<span class="comment">// \param[out] ref The OwnedRef containing the \c name attribute of the Python module \c</span></div><div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160;<span class="comment">// module</span></div><div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;Status ImportFromModule(<span class="keyword">const</span> OwnedRef&amp; module, <span class="keyword">const</span> std::string&amp; name, OwnedRef* ref);</div><div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;</div><div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;<span class="comment">// \brief Check whether obj is an integer, independent of Python versions.</span></div><div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;<
 span class="keyword">inline</span> <span class="keywordtype">bool</span> IsPyInteger(PyObject* obj) {</div><div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;<span class="preprocessor">#if PYARROW_IS_PY2</span></div><div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;  <span class="keywordflow">return</span> PyLong_Check(obj) || PyInt_Check(obj);</div><div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;<span class="preprocessor">#else</span></div><div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;  <span class="keywordflow">return</span> PyLong_Check(obj);</div><div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;<span class="preprocessor">#endif</span></div><div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;}</div><div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;</div><div class="line"><a name="l00
 074"></a><span class="lineno">   74</span>&#160;<span class="comment">// \brief Use pandas missing value semantics to check if a value is null</span></div><div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;<span class="keywordtype">bool</span> PandasObjectIsNull(PyObject* obj);</div><div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160;</div><div class="line"><a name="l00077"></a><span class="lineno">   77</span>&#160;<span class="comment">// \brief Check whether obj is nan</span></div><div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;<span class="keywordtype">bool</span> PyFloat_IsNaN(PyObject* obj);</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">inline</span> <span class="keywordtype">bool</span> IsPyBinary(PyObject* obj) {</div><div class="line"><a name="l00081">
 </a><span class="lineno">   81</span>&#160;  <span class="keywordflow">return</span> PyBytes_Check(obj) || PyByteArray_Check(obj);</div><div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160;}</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="comment">// \brief Convert a Python integer into a C integer</span></div><div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;<span class="comment">// \param[in] obj A Python integer</span></div><div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160;<span class="comment">// \param[out] out A pointer to a C integer to hold the result of the conversion</span></div><div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160;<span class="comment">// \return The status of the operation</span></div><div class="line"><a name="l00088"></
 a><span class="lineno">   88</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> Int&gt;</div><div class="line"><a name="l00089"></a><span class="lineno">   89</span>&#160;Status CIntFromPython(PyObject* obj, Int* out, <span class="keyword">const</span> std::string&amp; overflow_message = <span class="stringliteral">&quot;&quot;</span>);</div><div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160;</div><div class="line"><a name="l00091"></a><span class="lineno">   91</span>&#160;<span class="comment">// \brief Convert a Python unicode string to a std::string</span></div><div class="line"><a name="l00092"></a><span class="lineno">   92</span>&#160;Status PyUnicode_AsStdString(PyObject* obj, std::string* out);</div><div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160;</div><div class="line"><a name="l00094"></a><span class="lineno">   94</span>&#160;<span class="comment">// \brief Convert a Python 
 bytes object to a std::string</span></div><div class="line"><a name="l00095"></a><span class="lineno">   95</span>&#160;std::string PyBytes_AsStdString(PyObject* obj);</div><div class="line"><a name="l00096"></a><span class="lineno">   96</span>&#160;</div><div class="line"><a name="l00097"></a><span class="lineno">   97</span>&#160;<span class="comment">// \brief Call str() on the given object and return the result as a std::string</span></div><div class="line"><a name="l00098"></a><span class="lineno">   98</span>&#160;Status PyObject_StdStringStr(PyObject* obj, std::string* out);</div><div class="line"><a name="l00099"></a><span class="lineno">   99</span>&#160;</div><div class="line"><a name="l00100"></a><span class="lineno">  100</span>&#160;<span class="comment">// \brief Return the repr() of the given object (always succeeds)</span></div><div class="line"><a name="l00101"></a><span class="lineno">  101</span>&#160;std::string PyObject_StdStringRepr(PyObject* obj);</div><div c
 lass="line"><a name="l00102"></a><span class="lineno">  102</span>&#160;</div><div class="line"><a name="l00103"></a><span class="lineno">  103</span>&#160;<span class="comment">// \brief Cast the given size to int32_t, with error checking</span></div><div class="line"><a name="l00104"></a><span class="lineno">  104</span>&#160;<span class="keyword">inline</span> Status CastSize(Py_ssize_t size, int32_t* out,</div><div class="line"><a name="l00105"></a><span class="lineno">  105</span>&#160;                       <span class="keyword">const</span> <span class="keywordtype">char</span>* error_msg = <span class="stringliteral">&quot;Maximum size exceeded (2GB)&quot;</span>) {</div><div class="line"><a name="l00106"></a><span class="lineno">  106</span>&#160;  <span class="comment">// size is assumed to be positive</span></div><div class="line"><a name="l00107"></a><span class="lineno">  107</span>&#160;  <span class="keywordflow">if</span> (size &gt; std::numeric_limits&lt;int32_t&gt;
 ::max()) {</div><div class="line"><a name="l00108"></a><span class="lineno">  108</span>&#160;    <span class="keywordflow">return</span> <a class="code" href="classarrow_1_1_status.html#aaaa6c0ddc3021415c238ab07353f3195">Status::Invalid</a>(error_msg);</div><div class="line"><a name="l00109"></a><span class="lineno">  109</span>&#160;  }</div><div class="line"><a name="l00110"></a><span class="lineno">  110</span>&#160;  *out = <span class="keyword">static_cast&lt;</span>int32_t<span class="keyword">&gt;</span>(size);</div><div class="line"><a name="l00111"></a><span class="lineno">  111</span>&#160;  <span class="keywordflow">return</span> <a class="code" href="classarrow_1_1_status.html#a5c0b0031db6eeec3dcc70485d24cfe03">Status::OK</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;Status BuilderAppend(StringBuilder* builder, PyObject* obj, <span class="keywordtype">bool</span> check_valid = <span class="keyword">false</span>,</div><div class="line"><a name="l00115"></a><span class="lineno">  115</span>&#160;                     <span class="keywordtype">bool</span>* is_full = <span class="keyword">nullptr</span>);</div><div class="line"><a name="l00116"></a><span class="lineno">  116</span>&#160;Status BuilderAppend(BinaryBuilder* builder, PyObject* obj, <span class="keywordtype">bool</span>* is_full = <span class="keyword">nullptr</span>);</div><div class="line"><a name="l00117"></a><span class="lineno">  117</span>&#160;Status BuilderAppend(FixedSizeBinaryBuilder* builder, PyObject* obj,</div><div class="line"><a name="l00118"></a><span class="lineno">  118</span>&#160;                     <span class="keywordtype">bool</span>* is_full = <span class="keyword">nullptr</span>);</div><div class="line"><a name="l00119"></a><span class="lineno">  119</spa
 n>&#160;</div><div class="line"><a name="l00120"></a><span class="lineno">  120</span>&#160;}  <span class="comment">// namespace internal</span></div><div class="line"><a name="l00121"></a><span class="lineno">  121</span>&#160;}  <span class="comment">// namespace py</span></div><div class="line"><a name="l00122"></a><span class="lineno">  122</span>&#160;}  <span class="comment">// namespace arrow</span></div><div class="line"><a name="l00123"></a><span class="lineno">  123</span>&#160;</div><div class="line"><a name="l00124"></a><span class="lineno">  124</span>&#160;<span class="preprocessor">#endif  // ARROW_PYTHON_HELPERS_H</span></div><div class="ttc" id="structarrow_1_1_type_html_a00a041cb19a3be373da8eec7d4bf1f44"><div class="ttname"><a href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44">arrow::Type::type</a></div><div class="ttdeci">type</div><div class="ttdef"><b>Definition:</b> type.h:46</div></div>
+<a href="helpers_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>&#160;<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>&#160;<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>&#160;<span class="comment">// distributed with this work for additional information</span></div><div class="line"><a name="l00004"></a><span class="lineno">    4</span>&#160;<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>&#160;<span class="comment">// to you under the Apache License, Version 2.0 (the</span></div><div class="line"><a name="l00006"></a><span class
 ="lineno">    6</span>&#160;<span class="comment">// &quot;License&quot;); you may not use this file except in compliance</span></div><div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160;<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>&#160;<span class="comment">//</span></div><div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160;<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>&#160;<span class="comment">//</span></div><div class="line"><a name="l00011"></a><span class="lineno">   11</span>&#160;<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>&#160;<span class="comment">// software distributed u
 nder the License is distributed on an</span></div><div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;<span class="comment">// &quot;AS IS&quot; BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY</span></div><div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160;<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>&#160;<span class="comment">// specific language governing permissions and limitations</span></div><div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160;<span class="comment">// under the License.</span></div><div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;</div><div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;<span class="preprocessor">#ifndef ARROW_PYTHON_HELPERS_H</span></div><div class="line"><a name="l00019"></a><span class="linen
 o">   19</span>&#160;<span class="preprocessor">#define ARROW_PYTHON_HELPERS_H</span></div><div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;</div><div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="platform_8h.html">arrow/python/platform.h</a>&quot;</span></div><div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;</div><div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;<span class="preprocessor">#include &lt;limits&gt;</span></div><div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;<span class="preprocessor">#include &lt;memory&gt;</span></div><div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;<span class="preprocessor">#include &lt;string&gt;</span></div><div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;<span class="preprocessor">#inc
 lude &lt;utility&gt;</span></div><div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;</div><div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;<span class="preprocessor">#include &lt;numpy/halffloat.h&gt;</span></div><div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;</div><div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="type_8h.html">arrow/type.h</a>&quot;</span></div><div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="macros_8h.html">arrow/util/macros.h</a>&quot;</span></div><div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="visibility_8h.html">arrow/util/visibility.h</a>&quot;</span></div><div class="line"><a name="l00033"></a><span 
 class="lineno">   33</span>&#160;</div><div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;<span class="keyword">namespace </span><a class="code" href="namespacearrow.html">arrow</a> {</div><div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;</div><div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;<span class="keyword">namespace </span>py {</div><div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;</div><div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;<span class="keyword">class </span>OwnedRef;</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="comment">// \brief Get an arrow DataType instance from Arrow&#39;s Type::type enum</span></div><div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;<span clas
 s="comment">// \param[in] type One of the values of Arrow&#39;s Type::type enum</span></div><div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;<span class="comment">// \return A shared pointer to DataType</span></div><div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160;ARROW_EXPORT std::shared_ptr&lt;DataType&gt; <a class="code" href="namespacearrow_1_1py.html#a8949b2e5469221ad1b1eaf8665b9610b">GetPrimitiveType</a>(<a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44">Type::type</a> type);</div><div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;</div><div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;<span class="comment">// \brief Construct a np.float16 object from a npy_half value.</span></div><div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;ARROW_EXPORT <a class="code" href="python__to__arrow_8h.html#ae19630c1f4ca6d523
 6b30719d9140013">PyObject</a>* <a class="code" href="namespacearrow_1_1py.html#a60d1f752dfe2f3bbfa942c834ee607e0">PyHalf_FromHalf</a>(npy_half value);</div><div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;</div><div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;<span class="comment">// \brief Convert a Python object to a npy_half value.</span></div><div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;ARROW_EXPORT Status <a class="code" href="namespacearrow_1_1py.html#a52122657a994c78624f7e83ccaae30af">PyFloat_AsHalf</a>(<a class="code" href="python__to__arrow_8h.html#ae19630c1f4ca6d5236b30719d9140013">PyObject</a>* obj, npy_half* out);</div><div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;</div><div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;<span class="keyword">namespace </span>internal {</div><div class="line"><a name="l00052"></a><span class
 ="lineno">   52</span>&#160;</div><div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160;<span class="comment">// \brief Import a Python module</span></div><div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;<span class="comment">// \param[in] module_name The name of the module</span></div><div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;<span class="comment">// \param[out] ref The OwnedRef containing the module PyObject*</span></div><div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;Status ImportModule(<span class="keyword">const</span> std::string&amp; module_name, OwnedRef* ref);</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="comment">// \brief Import an object from a Python module</span></div><div class="line"><a name="l00059"></a><span class="l
 ineno">   59</span>&#160;<span class="comment">// \param[in] module A Python module</span></div><div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;<span class="comment">// \param[in] name The name of the object to import</span></div><div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;<span class="comment">// \param[out] ref The OwnedRef containing the \c name attribute of the Python module \c</span></div><div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160;<span class="comment">// module</span></div><div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;Status ImportFromModule(<span class="keyword">const</span> OwnedRef&amp; module, <span class="keyword">const</span> std::string&amp; name, OwnedRef* ref);</div><div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;</div><div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;<span class="c
 omment">// \brief Check whether obj is an integer, independent of Python versions.</span></div><div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;<span class="keyword">inline</span> <span class="keywordtype">bool</span> IsPyInteger(<a class="code" href="python__to__arrow_8h.html#ae19630c1f4ca6d5236b30719d9140013">PyObject</a>* obj) {</div><div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;<span class="preprocessor">#if PYARROW_IS_PY2</span></div><div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;  <span class="keywordflow">return</span> PyLong_Check(obj) || PyInt_Check(obj);</div><div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;<span class="preprocessor">#else</span></div><div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;  <span class="keywordflow">return</span> PyLong_Check(obj);</div><div class="line"><a name="l00071"></a><span class="lineno">  
  71</span>&#160;<span class="preprocessor">#endif</span></div><div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;}</div><div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;</div><div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;<span class="comment">// \brief Use pandas missing value semantics to check if a value is null</span></div><div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;<span class="keywordtype">bool</span> PandasObjectIsNull(<a class="code" href="python__to__arrow_8h.html#ae19630c1f4ca6d5236b30719d9140013">PyObject</a>* obj);</div><div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160;</div><div class="line"><a name="l00077"></a><span class="lineno">   77</span>&#160;<span class="comment">// \brief Check whether obj is a floating-point NaN</span></div><div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;<span class=
 "keywordtype">bool</span> PyFloat_IsNaN(<a class="code" href="python__to__arrow_8h.html#ae19630c1f4ca6d5236b30719d9140013">PyObject</a>* obj);</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">inline</span> <span class="keywordtype">bool</span> IsPyBinary(<a class="code" href="python__to__arrow_8h.html#ae19630c1f4ca6d5236b30719d9140013">PyObject</a>* obj) {</div><div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;  <span class="keywordflow">return</span> PyBytes_Check(obj) || PyByteArray_Check(obj);</div><div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160;}</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="comment">// \brief Convert a Python integer into a C integer</
 span></div><div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;<span class="comment">// \param[in] obj A Python integer</span></div><div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160;<span class="comment">// \param[out] out A pointer to a C integer to hold the result of the conversion</span></div><div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160;<span class="comment">// \return The status of the operation</span></div><div class="line"><a name="l00088"></a><span class="lineno">   88</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> Int&gt;</div><div class="line"><a name="l00089"></a><span class="lineno">   89</span>&#160;Status CIntFromPython(<a class="code" href="python__to__arrow_8h.html#ae19630c1f4ca6d5236b30719d9140013">PyObject</a>* obj, Int* out, <span class="keyword">const</span> std::string&amp; overflow_message = <span class="stringliteral">&quot;&quot;<
 /span>);</div><div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160;</div><div class="line"><a name="l00091"></a><span class="lineno">   91</span>&#160;<span class="comment">// \brief Convert a Python unicode string to a std::string</span></div><div class="line"><a name="l00092"></a><span class="lineno">   92</span>&#160;Status PyUnicode_AsStdString(<a class="code" href="python__to__arrow_8h.html#ae19630c1f4ca6d5236b30719d9140013">PyObject</a>* obj, std::string* out);</div><div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160;</div><div class="line"><a name="l00094"></a><span class="lineno">   94</span>&#160;<span class="comment">// \brief Convert a Python bytes object to a std::string</span></div><div class="line"><a name="l00095"></a><span class="lineno">   95</span>&#160;std::string PyBytes_AsStdString(<a class="code" href="python__to__arrow_8h.html#ae19630c1f4ca6d5236b30719d9140013">PyObject</a>* obj);</div><div class="line"><a nam
 e="l00096"></a><span class="lineno">   96</span>&#160;</div><div class="line"><a name="l00097"></a><span class="lineno">   97</span>&#160;<span class="comment">// \brief Call str() on the given object and return the result as a std::string</span></div><div class="line"><a name="l00098"></a><span class="lineno">   98</span>&#160;Status PyObject_StdStringStr(<a class="code" href="python__to__arrow_8h.html#ae19630c1f4ca6d5236b30719d9140013">PyObject</a>* obj, std::string* out);</div><div class="line"><a name="l00099"></a><span class="lineno">   99</span>&#160;</div><div class="line"><a name="l00100"></a><span class="lineno">  100</span>&#160;<span class="comment">// \brief Return the repr() of the given object (always succeeds)</span></div><div class="line"><a name="l00101"></a><span class="lineno">  101</span>&#160;std::string PyObject_StdStringRepr(<a class="code" href="python__to__arrow_8h.html#ae19630c1f4ca6d5236b30719d9140013">PyObject</a>* obj);</div><div class="line"><a name="l0
 0102"></a><span class="lineno">  102</span>&#160;</div><div class="line"><a name="l00103"></a><span class="lineno">  103</span>&#160;<span class="comment">// \brief Cast the given size to int32_t, with error checking</span></div><div class="line"><a name="l00104"></a><span class="lineno">  104</span>&#160;<span class="keyword">inline</span> Status CastSize(Py_ssize_t size, int32_t* out,</div><div class="line"><a name="l00105"></a><span class="lineno">  105</span>&#160;                       <span class="keyword">const</span> <span class="keywordtype">char</span>* error_msg = <span class="stringliteral">&quot;Maximum size exceeded (2GB)&quot;</span>) {</div><div class="line"><a name="l00106"></a><span class="lineno">  106</span>&#160;  <span class="comment">// size is assumed to be positive</span></div><div class="line"><a name="l00107"></a><span class="lineno">  107</span>&#160;  <span class="keywordflow">if</span> (size &gt; std::numeric_limits&lt;int32_t&gt;::max()) {</div><div cl
 ass="line"><a name="l00108"></a><span class="lineno">  108</span>&#160;    <span class="keywordflow">return</span> <a class="code" href="classarrow_1_1_status.html#aaaa6c0ddc3021415c238ab07353f3195">Status::Invalid</a>(error_msg);</div><div class="line"><a name="l00109"></a><span class="lineno">  109</span>&#160;  }</div><div class="line"><a name="l00110"></a><span class="lineno">  110</span>&#160;  *out = <span class="keyword">static_cast&lt;</span>int32_t<span class="keyword">&gt;</span>(size);</div><div class="line"><a name="l00111"></a><span class="lineno">  111</span>&#160;  <span class="keywordflow">return</span> <a class="code" href="classarrow_1_1_status.html#a5c0b0031db6eeec3dcc70485d24cfe03">Status::OK</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;Status BuilderAp
 pend(StringBuilder* builder, <a class="code" href="python__to__arrow_8h.html#ae19630c1f4ca6d5236b30719d9140013">PyObject</a>* obj, <span class="keywordtype">bool</span> check_valid = <span class="keyword">false</span>,</div><div class="line"><a name="l00115"></a><span class="lineno">  115</span>&#160;                     <span class="keywordtype">bool</span>* is_full = <a class="code" href="macros_8h.html#a3ef7eab8cd0e570b6586628cc9d5ccab">NULLPTR</a>);</div><div class="line"><a name="l00116"></a><span class="lineno">  116</span>&#160;Status BuilderAppend(BinaryBuilder* builder, <a class="code" href="python__to__arrow_8h.html#ae19630c1f4ca6d5236b30719d9140013">PyObject</a>* obj, <span class="keywordtype">bool</span>* is_full = <a class="code" href="macros_8h.html#a3ef7eab8cd0e570b6586628cc9d5ccab">NULLPTR</a>);</div><div class="line"><a name="l00117"></a><span class="lineno">  117</span>&#160;Status BuilderAppend(FixedSizeBinaryBuilder* builder, <a class="code" href="python__to__arr
 ow_8h.html#ae19630c1f4ca6d5236b30719d9140013">PyObject</a>* obj,</div><div class="line"><a name="l00118"></a><span class="lineno">  118</span>&#160;                     <span class="keywordtype">bool</span>* is_full = <a class="code" href="macros_8h.html#a3ef7eab8cd0e570b6586628cc9d5ccab">NULLPTR</a>);</div><div class="line"><a name="l00119"></a><span class="lineno">  119</span>&#160;</div><div class="line"><a name="l00120"></a><span class="lineno">  120</span>&#160;}  <span class="comment">// namespace internal</span></div><div class="line"><a name="l00121"></a><span class="lineno">  121</span>&#160;}  <span class="comment">// namespace py</span></div><div class="line"><a name="l00122"></a><span class="lineno">  122</span>&#160;}  <span class="comment">// namespace arrow</span></div><div class="line"><a name="l00123"></a><span class="lineno">  123</span>&#160;</div><div class="line"><a name="l00124"></a><span class="lineno">  124</span>&#160;<span class="preprocessor">#endif  // AR
 ROW_PYTHON_HELPERS_H</span></div><div class="ttc" id="structarrow_1_1_type_html_a00a041cb19a3be373da8eec7d4bf1f44"><div class="ttname"><a href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44">arrow::Type::type</a></div><div class="ttdeci">type</div><div class="ttdef"><b>Definition:</b> type.h:46</div></div>
+<div class="ttc" id="macros_8h_html_a3ef7eab8cd0e570b6586628cc9d5ccab"><div class="ttname"><a href="macros_8h.html#a3ef7eab8cd0e570b6586628cc9d5ccab">NULLPTR</a></div><div class="ttdeci">#define NULLPTR</div><div class="ttdef"><b>Definition:</b> macros.h:69</div></div>
 <div class="ttc" id="platform_8h_html"><div class="ttname"><a href="platform_8h.html">platform.h</a></div></div>
 <div class="ttc" id="namespacearrow_1_1py_html_a60d1f752dfe2f3bbfa942c834ee607e0"><div class="ttname"><a href="namespacearrow_1_1py.html#a60d1f752dfe2f3bbfa942c834ee607e0">arrow::py::PyHalf_FromHalf</a></div><div class="ttdeci">PyObject * PyHalf_FromHalf(npy_half value)</div></div>
 <div class="ttc" id="namespacearrow_1_1py_html_a8949b2e5469221ad1b1eaf8665b9610b"><div class="ttname"><a href="namespacearrow_1_1py.html#a8949b2e5469221ad1b1eaf8665b9610b">arrow::py::GetPrimitiveType</a></div><div class="ttdeci">std::shared_ptr&lt; DataType &gt; GetPrimitiveType(Type::type type)</div></div>
 <div class="ttc" id="macros_8h_html"><div class="ttname"><a href="macros_8h.html">macros.h</a></div></div>
-<div class="ttc" id="classarrow_1_1_status_html_a5c0b0031db6eeec3dcc70485d24cfe03"><div class="ttname"><a href="classarrow_1_1_status.html#a5c0b0031db6eeec3dcc70485d24cfe03">arrow::Status::OK</a></div><div class="ttdeci">static Status OK()</div><div class="ttdef"><b>Definition:</b> status.h:106</div></div>
+<div class="ttc" id="classarrow_1_1_status_html_a5c0b0031db6eeec3dcc70485d24cfe03"><div class="ttname"><a href="classarrow_1_1_status.html#a5c0b0031db6eeec3dcc70485d24cfe03">arrow::Status::OK</a></div><div class="ttdeci">static Status OK()</div><div class="ttdef"><b>Definition:</b> status.h:123</div></div>
 <div class="ttc" id="visibility_8h_html"><div class="ttname"><a href="visibility_8h.html">visibility.h</a></div></div>
-<div class="ttc" id="classarrow_1_1_status_html_aaaa6c0ddc3021415c238ab07353f3195"><div class="ttname"><a href="classarrow_1_1_status.html#aaaa6c0ddc3021415c238ab07353f3195">arrow::Status::Invalid</a></div><div class="ttdeci">static Status Invalid(const std::string &amp;msg)</div><div class="ttdef"><b>Definition:</b> status.h:129</div></div>
+<div class="ttc" id="classarrow_1_1_status_html_aaaa6c0ddc3021415c238ab07353f3195"><div class="ttname"><a href="classarrow_1_1_status.html#aaaa6c0ddc3021415c238ab07353f3195">arrow::Status::Invalid</a></div><div class="ttdeci">static Status Invalid(const std::string &amp;msg)</div><div class="ttdef"><b>Definition:</b> status.h:146</div></div>
+<div class="ttc" id="python__to__arrow_8h_html_ae19630c1f4ca6d5236b30719d9140013"><div class="ttname"><a href="python__to__arrow_8h.html#ae19630c1f4ca6d5236b30719d9140013">PyObject</a></div><div class="ttdeci">_object PyObject</div><div class="ttdef"><b>Definition:</b> python_to_arrow.h:30</div></div>
 <div class="ttc" id="namespacearrow_html"><div class="ttname"><a href="namespacearrow.html">arrow</a></div><div class="ttdoc">Top-level namespace for Apache Arrow C++ API. </div><div class="ttdef"><b>Definition:</b> adapter.h:32</div></div>
 <div class="ttc" id="namespacearrow_1_1py_html_a52122657a994c78624f7e83ccaae30af"><div class="ttname"><a href="namespacearrow_1_1py.html#a52122657a994c78624f7e83ccaae30af">arrow::py::PyFloat_AsHalf</a></div><div class="ttdeci">Status PyFloat_AsHalf(PyObject *obj, npy_half *out)</div></div>
 <div class="ttc" id="type_8h_html"><div class="ttname"><a href="type_8h.html">type.h</a></div></div>