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annotate oct-py-types.cc @ 340:06b8aeea456f

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Add functions to conversion API to extract bool, double, and complex values * oct-py-types.cc, oct-py-types.h (pytave::extract_py_bool, pytave::extract_py_complex, pytave::extract_py_float): New functions to extract numeric values from Python numeric types. * python_to_octave.cc (pytave::pyobj_to_octvalue): Use them.
author Mike Miller <mtmiller@octave.org>
date Mon, 15 Aug 2016 21:52:50 -0700
parents d3d355dc44ad
children 6bd8f5e3542a
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /*
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2
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3 Copyright (C) 2016 Mike Miller
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4
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5 This file is part of Pytave.
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6
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7 Pytave is free software; you can redistribute it and/or modify it
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8 under the terms of the GNU General Public License as published by the
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9 Free Software Foundation; either version 3 of the License, or (at your
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10 option) any later version.
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11
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12 Pytave is distributed in the hope that it will be useful, but WITHOUT
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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15 for more details.
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16
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17 You should have received a copy of the GNU General Public License
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18 along with Pytave; see the file COPYING. If not, see
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19 <http://www.gnu.org/licenses/>.
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20
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21 */
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22
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23 #if defined (HAVE_CONFIG_H)
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24 # include <config.h>
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25 #endif
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26
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27 #include <octave/Cell.h>
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28 #include <octave/oct-map.h>
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29 #include <octave/quit.h>
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30
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31 #include "exceptions.h"
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32 #include "oct-py-types.h"
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33
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34 // FIXME: only here to bootstrap nested conversions needed in this file
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35 #include "octave_to_python.h"
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36
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37 namespace pytave
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38 {
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39
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40 PyObject *
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41 make_py_bool (bool value)
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42 {
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43 if (value)
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44 Py_RETURN_TRUE;
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45 else
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46 Py_RETURN_FALSE;
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47 }
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48
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49 PyObject *
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50 make_py_complex (std::complex<double> value)
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51 {
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52 Py_complex& py_complex_value = reinterpret_cast<Py_complex&> (value);
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53 return PyComplex_FromCComplex (py_complex_value);
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54 }
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55
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56 PyObject *
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57 make_py_float (double value)
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58 {
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59 return PyFloat_FromDouble (value);
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60 }
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61
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62 bool
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63 extract_py_bool (PyObject *obj)
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64 {
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65 if (! obj)
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66 throw object_convert_exception ("failed to extract boolean: null object");
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67
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68 if (! PyBool_Check (obj))
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69 throw object_convert_exception ("failed to extract boolean: wrong type");
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70
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71 return (obj == Py_True);
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72 }
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73
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74 std::complex<double>
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75 extract_py_complex (PyObject *obj)
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76 {
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77 if (! obj)
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78 throw object_convert_exception ("failed to extract complex: null object");
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79
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80 if (! PyComplex_Check (obj))
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81 throw object_convert_exception ("failed to extract complex: wrong type");
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82
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83 Py_complex value = PyComplex_AsCComplex (obj);
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84 return reinterpret_cast<std::complex<double>&> (value);
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85 }
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86
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87 double
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88 extract_py_float (PyObject *obj)
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89 {
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90 if (! obj)
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91 throw object_convert_exception ("failed to extract float: null object");
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92
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93 if (! PyFloat_Check (obj))
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94 throw object_convert_exception ("failed to extract float: wrong type");
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95
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96 return PyFloat_AsDouble (obj);
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97 }
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98
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99 inline PyObject *
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100 make_py_int (int32_t value)
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101 {
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102 #if PY_VERSION_HEX >= 0x03000000
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103 return PyLong_FromLong (value);
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104 #else
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105 return PyInt_FromLong (value);
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106 #endif
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107 }
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108
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109 inline PyObject *
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110 make_py_int (uint32_t value)
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111 {
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112 return PyLong_FromUnsignedLong (value);
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113 }
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114
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115 inline PyObject *
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116 make_py_int (int64_t value)
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117 {
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118 #if (defined (HAVE_LONG_LONG) && (SIZEOF_LONG_LONG > SIZEOF_LONG))
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119 return PyLong_FromLongLong (value);
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120 #else
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121 return PyLong_FromLong (value);
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122 #endif
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123 }
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124
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125 inline PyObject *
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126 make_py_int (uint64_t value)
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127 {
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128 #if (defined (HAVE_LONG_LONG) && (SIZEOF_LONG_LONG > SIZEOF_LONG))
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129 return PyLong_FromUnsignedLongLong (value);
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130 #else
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131 return PyLong_FromUnsignedLong (value);
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132 #endif
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133 }
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134
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135 PyObject *
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136 make_py_numeric_value (const octave_value& value)
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137 {
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138 if (value.is_scalar_type ())
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139 {
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140 if (value.is_bool_type ())
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141 return make_py_bool (value.bool_value ());
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142
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143 else if (value.is_int8_type ())
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144 return make_py_int (value.int8_scalar_value ().value ());
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145 else if (value.is_int16_type ())
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146 return make_py_int (value.int16_scalar_value ().value ());
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147 else if (value.is_int32_type ())
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148 return make_py_int (value.int32_scalar_value ().value ());
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149 else if (value.is_int64_type ())
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150 return make_py_int (value.int64_scalar_value ().value ());
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151
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152 else if (value.is_uint8_type ())
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153 return make_py_int (value.uint8_scalar_value ().value ());
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154 else if (value.is_uint16_type ())
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155 return make_py_int (value.uint16_scalar_value ().value ());
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156 else if (value.is_uint32_type ())
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157 return make_py_int (value.uint32_scalar_value ().value ());
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158 else if (value.is_uint64_type ())
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159 return make_py_int (value.uint64_scalar_value ().value ());
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160
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161 else if (value.is_complex_type ())
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162 return make_py_complex (value.complex_value ());
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163 else if (value.is_float_type ())
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164 return make_py_float (value.double_value ());
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165 }
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166
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167 throw value_convert_exception ("unhandled scalar type");
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168 return 0;
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169 }
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170
320
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171 inline PyObject *
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172 wrap_octvalue_to_pyobj (const octave_value& value)
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173 {
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174 boost::python::object obj;
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175 octvalue_to_pyobj (obj, value);
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176 PyObject *ptr = obj.ptr ();
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177 Py_INCREF (ptr);
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178 return ptr;
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179 }
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180
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181 PyObject *
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182 make_py_dict (const octave_scalar_map& map)
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183 {
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184 PyObject *dict = PyDict_New ();
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185 if (! dict)
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186 octave_throw_bad_alloc ();
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187
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188 for (auto p = map.begin (); p != map.end (); ++p)
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189 {
325
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190 PyObject *key = make_py_str (map.key (p));
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191 if (! key)
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192 octave_throw_bad_alloc ();
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193
320
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194 PyObject *item = wrap_octvalue_to_pyobj (map.contents (p));
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195
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196 if (PyDict_SetItem (dict, key, item) < 0)
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197 throw boost::python::error_already_set ();
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198 }
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199
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200 return dict;
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201 }
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202
328
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203 int64_t
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204 extract_py_int64 (PyObject *obj)
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205 {
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206 if (! obj)
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207 throw object_convert_exception ("failed to extract integer: null object");
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208
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209 if (PyLong_Check (obj))
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210 return PyLong_AsLong (obj);
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211 #if PY_VERSION_HEX < 0x03000000
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212 else if (PyInt_Check (obj))
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213 return PyInt_AsLong (obj);
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214 #endif
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215 else
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216 throw object_convert_exception ("failed to extract integer: wrong type");
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217
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218 return 0;
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219 }
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220
336
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221 PyObject *
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222 make_py_list (const Cell& cell)
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223 {
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224 if (! (cell.is_empty () || cell.is_vector ()))
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225 throw value_convert_exception (
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226 "unable to convert multidimensional cell array into Python sequence");
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227
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228 PyObject *list = PyList_New (0);
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229 if (! list)
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230 octave_throw_bad_alloc ();
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diff changeset
231
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232 for (octave_idx_type i = 0; i < cell.numel (); i++)
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233 {
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234 PyObject *item = wrap_octvalue_to_pyobj (cell.xelem (i));
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235
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236 if (PyList_Append (list, item) < 0)
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237 throw boost::python::error_already_set ();
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238 }
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239
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240 return list;
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diff changeset
241 }
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diff changeset
242
325
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243 std::string
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244 extract_py_str (PyObject *obj)
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245 {
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246 std::string retval;
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247
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diff changeset
248 if (! obj)
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249 throw object_convert_exception ("failed to extract string: null object");
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250 if (PyBytes_Check (obj))
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251 {
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252 retval.assign (PyBytes_AsString (obj), PyBytes_Size (obj));
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253 }
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254 else if (PyUnicode_Check (obj))
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255 {
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diff changeset
256 bool ok = false;
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257 PyObject *enc = PyUnicode_AsUTF8String (obj);
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diff changeset
258 if (enc)
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diff changeset
259 {
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diff changeset
260 if (PyBytes_Check (enc))
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diff changeset
261 {
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diff changeset
262 ok = true;
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263 retval.assign (PyBytes_AsString (enc), PyBytes_Size (enc));
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diff changeset
264 }
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265 Py_DECREF (enc);
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diff changeset
266 }
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diff changeset
267 if (! ok)
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268 throw object_convert_exception ("failed to extract string: UTF-8 error");
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diff changeset
269 }
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diff changeset
270 else
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diff changeset
271 throw object_convert_exception ("failed to extract string: wrong type");
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diff changeset
272
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diff changeset
273 return retval;
320
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274 }
325
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275
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276 PyObject *
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diff changeset
277 make_py_str (const std::string& str)
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278 {
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diff changeset
279 #if PY_VERSION_HEX >= 0x03000000
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280 return PyUnicode_FromStringAndSize (str.data (), str.size ());
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diff changeset
281 #else
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282 return PyString_FromStringAndSize (str.data (), str.size ());
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283 #endif
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diff changeset
284 }
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diff changeset
285
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286 }