Mercurial > pytave
annotate python_to_octave.cc @ 321:3afd890fff6d
Rewrite pyobject.cell, always return a cell array of the right size
* @pyobject/cell.m: Rewrite, ensuring return value is always a cell array
of the correct size. Add more %!tests.
author | Mike Miller <mtmiller@octave.org> |
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date | Thu, 11 Aug 2016 22:35:19 -0700 |
parents | 2ecae5c6eeb6 |
children | fd5881d48238 |
rev | line source |
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1 /* |
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2 |
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3 Copyright (C) 2015-2016 Mike Miller |
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4 Copyright (C) 2008 David Grundberg, HÃ¥kan Fors Nilsson |
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5 Copyright (C) 2009 VZLU Prague |
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6 |
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7 This file is part of Pytave. |
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8 |
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9 Pytave is free software: you can redistribute it and/or modify it |
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10 under the terms of the GNU General Public License as published by the |
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11 Free Software Foundation, either version 3 of the License, or (at your |
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12 option) any later version. |
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13 |
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14 Pytave is distributed in the hope that it will be useful, but WITHOUT |
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15 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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16 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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17 for more details. |
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18 |
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19 You should have received a copy of the GNU General Public License |
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20 along with Pytave; see the file COPYING. If not, see |
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21 <http://www.gnu.org/licenses/>. |
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22 |
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23 */ |
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24 |
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25 #if defined (HAVE_CONFIG_H) |
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26 # include <config.h> |
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27 #endif |
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28 |
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29 #include <iostream> |
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30 #include <boost/python.hpp> |
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31 #include <boost/python/numeric.hpp> |
46 | 32 #include <boost/type_traits/integral_constant.hpp> |
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33 |
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34 #include <octave/oct.h> |
9 | 35 #include <octave/oct-map.h> |
36 #include <octave/Cell.h> | |
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37 #include <octave/ov.h> |
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38 #include <octave/Array.h> |
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39 #include <octave/parse.h> |
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40 |
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41 #include "arrayobjectdefs.h" |
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42 #include "exceptions.h" |
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43 #include "python_to_octave.h" |
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44 #include "pytave_utils.h" |
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45 |
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46 using namespace boost::python; |
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47 |
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48 namespace pytave |
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49 { |
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50 template <class PythonPrimitive, class OctaveBase> |
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51 static void |
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52 copy_pyarrobj_to_octarray (OctaveBase& matrix, PyArrayObject *pyarr, |
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53 const int unsigned matindex, |
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54 const unsigned int matstride, |
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55 const int dimension, const unsigned int offset) |
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56 { |
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57 unsigned char *ptr = (unsigned char*) PyArray_DATA (pyarr); |
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58 if (dimension == PyArray_NDIM (pyarr) - 1) |
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59 { |
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60 // Last dimension, base case |
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61 for (int i = 0; i < PyArray_DIM (pyarr, dimension); i++) |
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62 { |
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63 matrix.elem (matindex + i*matstride) |
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64 = *(PythonPrimitive*) |
108 | 65 &ptr[offset + i*PyArray_STRIDE (pyarr, dimension)]; |
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66 } |
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67 } |
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68 else if (PyArray_NDIM (pyarr) == 0) |
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69 { |
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70 matrix.elem (0) = *(PythonPrimitive*) ptr; |
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71 } |
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72 else |
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73 { |
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74 for (int i = 0; i < PyArray_DIM (pyarr, dimension); i++) |
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75 { |
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76 copy_pyarrobj_to_octarray<PythonPrimitive, OctaveBase> ( |
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77 matrix, |
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78 pyarr, |
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79 matindex + i*matstride, |
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80 matstride * PyArray_DIM (pyarr, dimension), |
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81 dimension + 1, |
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82 offset + i*PyArray_STRIDE (pyarr, dimension)); |
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83 } |
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84 } |
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85 } |
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86 |
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87 template <> |
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88 void |
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89 copy_pyarrobj_to_octarray<PyObject *, Cell> (Cell& matrix, |
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90 PyArrayObject *pyarr, |
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91 const int unsigned matindex, |
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92 const unsigned int matstride, |
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93 const int dimension, |
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94 const unsigned int offset) |
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95 { |
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96 unsigned char *ptr = (unsigned char*) PyArray_DATA (pyarr); |
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97 if (dimension == PyArray_NDIM (pyarr) - 1) |
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98 { |
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99 // Last dimension, base case |
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100 for (int i = 0; i < PyArray_DIM (pyarr, dimension); i++) |
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101 { |
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102 PyObject *pobj = *(PyObject **) |
108 | 103 &ptr[offset + i*PyArray_STRIDE (pyarr, dimension)]; |
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104 pyobj_to_octvalue (matrix.elem (matindex + i*matstride), |
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105 object (handle<PyObject> (borrowed (pobj)))); |
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106 } |
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107 } |
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108 else if (PyArray_NDIM (pyarr) == 0) |
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109 { |
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110 PyObject *pobj = *(PyObject **) ptr; |
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111 pyobj_to_octvalue (matrix.elem (0), |
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112 object (handle<PyObject> (borrowed (pobj)))); |
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113 } |
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114 else |
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115 { |
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116 for (int i = 0; i < PyArray_DIM (pyarr, dimension); i++) |
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117 { |
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118 copy_pyarrobj_to_octarray<PyObject *, Cell> ( |
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119 matrix, |
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120 pyarr, |
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121 matindex + i*matstride, |
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122 matstride * PyArray_DIM (pyarr, dimension), |
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123 dimension + 1, |
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124 offset + i*PyArray_STRIDE (pyarr, dimension)); |
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125 } |
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126 } |
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127 } |
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128 |
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129 template <class PythonPrimitive, class OctaveBase> |
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130 static void |
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131 copy_pyarrobj_to_octarray_dispatch (OctaveBase& matrix, |
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132 PyArrayObject *pyarr, |
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133 const boost::true_type&) |
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134 { |
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135 copy_pyarrobj_to_octarray<PythonPrimitive, OctaveBase> (matrix, pyarr, 0, 1, 0, 0); |
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136 } |
46 | 137 |
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138 template <class PythonPrimitive, class OctaveBase> |
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139 static void |
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140 copy_pyarrobj_to_octarray_dispatch (OctaveBase& matrix, |
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141 PyArrayObject *pyarr, |
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142 const boost::false_type&) |
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143 { |
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144 assert (0); |
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145 } |
46 | 146 |
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147 template <class X, class Y> class matching_type : public boost::false_type { }; |
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148 template <class X> class matching_type<X, X> : public boost::true_type { }; |
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149 template <class X> class matching_type<X, octave_int<X> > : public boost::true_type { }; |
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150 template <> class matching_type<float, double> : public boost::true_type { }; |
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151 template <> class matching_type<FloatComplex, Complex> : public boost::true_type { }; |
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152 template <> class matching_type<PyObject *, octave_value> : public boost::true_type { }; |
46 | 153 |
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154 template <class PythonPrimitive, class OctaveBase> |
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155 static void |
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156 copy_pyarrobj_to_octarray_dispatch (OctaveBase& matrix, |
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157 PyArrayObject *pyarr) |
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158 { |
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159 matching_type<PythonPrimitive, typename OctaveBase::element_type> inst; |
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160 copy_pyarrobj_to_octarray_dispatch<PythonPrimitive, OctaveBase> (matrix, pyarr, inst); |
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161 } |
46 | 162 |
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163 template <class OctaveBase> |
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164 static void |
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165 copy_pyarrobj_to_octarray_boot (OctaveBase& matrix, PyArrayObject *pyarr) |
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166 { |
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167 |
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168 #define ARRAYCASE(AC_pyarrtype, AC_primitive) case AC_pyarrtype: \ |
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169 copy_pyarrobj_to_octarray_dispatch<AC_primitive, OctaveBase> \ |
46 | 170 (matrix, pyarr); \ |
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171 break; \ |
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172 |
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173 // Coerce NumPy's long type into one of two possible sized integer types |
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174 int type_num = PyArray_TYPE (pyarr); |
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175 switch (type_num) |
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176 { |
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177 case NPY_LONG: |
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178 if (sizeof (npy_long) == sizeof (int64_t)) |
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179 type_num = NPY_INT64; |
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180 else if (sizeof (npy_long) == sizeof (int32_t)) |
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181 type_num = NPY_INT32; |
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182 break; |
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183 case NPY_LONGLONG: |
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184 if (sizeof (npy_longlong) == sizeof (int64_t)) |
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185 type_num = NPY_INT64; |
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186 else if (sizeof (npy_longlong) == sizeof (int32_t)) |
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187 type_num = NPY_INT32; |
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188 break; |
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189 case NPY_ULONG: |
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190 if (sizeof (npy_ulong) == sizeof (uint64_t)) |
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191 type_num = NPY_UINT64; |
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192 else if (sizeof (npy_ulong) == sizeof (uint32_t)) |
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193 type_num = NPY_UINT32; |
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194 break; |
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195 case NPY_ULONGLONG: |
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196 if (sizeof (npy_ulonglong) == sizeof (uint64_t)) |
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197 type_num = NPY_UINT64; |
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198 else if (sizeof (npy_ulonglong) == sizeof (uint32_t)) |
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199 type_num = NPY_UINT32; |
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200 break; |
47
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201 } |
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202 |
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203 switch (type_num) |
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204 { |
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205 ARRAYCASE (NPY_INT8, int8_t) |
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206 ARRAYCASE (NPY_INT16, int16_t) |
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207 ARRAYCASE (NPY_INT32, int32_t) |
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208 ARRAYCASE (NPY_INT64, int64_t) |
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209 ARRAYCASE (NPY_UINT8, uint8_t) |
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210 ARRAYCASE (NPY_UINT16, uint16_t) |
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211 ARRAYCASE (NPY_UINT32, uint32_t) |
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212 ARRAYCASE (NPY_UINT64, uint64_t) |
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213 ARRAYCASE (NPY_FLOAT, float) |
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214 ARRAYCASE (NPY_DOUBLE, double) |
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215 ARRAYCASE (NPY_CFLOAT, FloatComplex) |
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216 ARRAYCASE (NPY_CDOUBLE, Complex) |
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217 ARRAYCASE (NPY_BOOL, bool) |
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218 ARRAYCASE (NPY_CHAR, char) |
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219 ARRAYCASE (NPY_STRING, char) |
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220 ARRAYCASE (NPY_OBJECT, PyObject *) |
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221 |
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222 default: |
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223 throw object_convert_exception ( |
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224 PyEval_GetFuncName ((PyObject*)pyarr) |
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225 + (PyEval_GetFuncDesc ((PyObject*)pyarr) |
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226 + std::string (": Unsupported Python array type"))); |
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227 } |
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228 } |
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229 |
146
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230 template <class OctaveBase> |
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231 static void |
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232 pyarrobj_to_octvalueNd (octave_value& octvalue, PyArrayObject *pyarr, |
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233 const dim_vector& dims) |
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234 { |
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235 OctaveBase array (dims); |
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236 copy_pyarrobj_to_octarray_boot<OctaveBase> (array, pyarr); |
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237 octvalue = array; |
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238 } |
0
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239 |
146
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240 static void |
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241 pyarr_to_octvalue (octave_value& octvalue, PyArrayObject *pyarr) |
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242 { |
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243 dim_vector dims; |
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244 switch (PyArray_NDIM (pyarr)) |
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245 { |
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246 case 0: |
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247 dims = dim_vector (1, 1); |
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248 break; |
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249 case 1: |
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250 // Always make PyArray vectors row vectors. |
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251 dims = dim_vector (1, PyArray_DIM (pyarr, 0)); |
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252 break; |
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253 default: |
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254 dims.resize (PyArray_NDIM (pyarr)); |
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255 for (int d = 0; d < PyArray_NDIM (pyarr); d++) |
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256 dims(d) = PyArray_DIM (pyarr, d); |
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257 break; |
0
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258 } |
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259 |
146
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260 switch (PyArray_TYPE (pyarr)) |
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261 { |
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262 case NPY_BYTE: |
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263 case NPY_SHORT: |
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264 case NPY_INT: |
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265 case NPY_LONG: |
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266 case NPY_LONGLONG: |
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267 switch (PyArray_ITEMSIZE (pyarr)) |
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268 { |
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269 case 1: |
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270 pyarrobj_to_octvalueNd<int8NDArray> (octvalue, pyarr, dims); |
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271 break; |
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272 case 2: |
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273 pyarrobj_to_octvalueNd<int16NDArray> (octvalue, pyarr, dims); |
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274 break; |
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275 case 4: |
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276 pyarrobj_to_octvalueNd<int32NDArray> (octvalue, pyarr, dims); |
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277 break; |
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278 case 8: |
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279 pyarrobj_to_octvalueNd<int64NDArray> (octvalue, pyarr, dims); |
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280 break; |
146
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281 default: |
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282 throw object_convert_exception ("Unknown integer."); |
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283 } |
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284 break; |
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285 case NPY_UBYTE: |
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286 case NPY_USHORT: |
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287 case NPY_UINT: |
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288 case NPY_ULONG: |
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289 case NPY_ULONGLONG: |
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290 switch (PyArray_ITEMSIZE (pyarr)) |
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291 { |
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292 case 1: |
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293 pyarrobj_to_octvalueNd<uint8NDArray> (octvalue, pyarr, dims); |
143
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294 break; |
146
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295 case 2: |
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296 pyarrobj_to_octvalueNd<uint16NDArray> (octvalue, pyarr, dims); |
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297 break; |
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298 case 4: |
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299 pyarrobj_to_octvalueNd<uint32NDArray> (octvalue, pyarr, dims); |
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300 break; |
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301 case 8: |
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302 pyarrobj_to_octvalueNd<uint64NDArray> (octvalue, pyarr, dims); |
0
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303 break; |
146
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304 default: |
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305 throw object_convert_exception ("Unknown unsigned integer."); |
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306 } |
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307 break; |
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308 case NPY_FLOAT: |
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309 pyarrobj_to_octvalueNd<FloatNDArray> (octvalue, pyarr, dims); |
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310 break; |
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311 case NPY_DOUBLE: |
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312 pyarrobj_to_octvalueNd<NDArray> (octvalue, pyarr, dims); |
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313 break; |
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314 case NPY_CFLOAT: |
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315 pyarrobj_to_octvalueNd<FloatComplexNDArray> (octvalue, pyarr, dims); |
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316 break; |
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317 case NPY_CDOUBLE: |
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318 pyarrobj_to_octvalueNd<ComplexNDArray> (octvalue, pyarr, dims); |
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319 break; |
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320 case NPY_BOOL: |
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321 pyarrobj_to_octvalueNd<boolNDArray> (octvalue, pyarr, dims); |
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322 break; |
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323 case NPY_CHAR: |
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324 case_NPY_CHAR: |
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325 pyarrobj_to_octvalueNd<charNDArray> (octvalue, pyarr, dims); |
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326 // FIXME: is the following needed? |
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327 octvalue = octvalue.convert_to_str (true, true, '"'); |
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328 break; |
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329 case NPY_STRING: |
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330 { |
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331 if (PyArray_ITEMSIZE (pyarr) == 1) |
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332 goto case_NPY_CHAR; |
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333 else |
81
2e8b52a5e1b1
support NumPy string arrays
Jaroslav Hajek <highegg@gmail.com>
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334 { |
146
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335 // Create a new descriptor of the data. |
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336 PyArray_Descr *view_descr = PyArray_DescrFromType (NPY_CHAR); |
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337 // Create a new view of the NumPy array. |
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338 PyArrayObject *view = (PyArrayObject *)PyArray_View (pyarr, view_descr, 0); |
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339 // Store in a handle to ensure proper destruction. |
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340 handle<PyObject> view_handle (allow_null ((PyObject *)view)); |
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341 // Call recursively. |
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342 pyarr_to_octvalue (octvalue, view); |
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343 } |
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344 } |
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345 break; |
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346 case NPY_OBJECT: |
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347 pyarrobj_to_octvalueNd<Cell> (octvalue, pyarr, dims); |
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348 break; |
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349 default: |
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350 throw object_convert_exception ( |
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351 PyEval_GetFuncDesc ((PyObject*)(pyarr)) + std::string (" ") |
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352 + PyEval_GetFuncName ((PyObject*)(pyarr)) |
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353 + ": Encountered unsupported Python array"); |
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354 break; |
0
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355 } |
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356 } |
25 | 357 |
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358 static void |
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359 pylist_to_cellarray (octave_value& oct_value, const boost::python::list& list) |
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360 { |
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361 octave_idx_type length = boost::python::extract<octave_idx_type> (list.attr ("__len__") ()); |
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362 octave_value_list values; |
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364 for (octave_idx_type i = 0; i < length; i++) |
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365 { |
25 | 366 octave_value val; |
9 | 367 |
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368 pyobj_to_octvalue (val, list[i]); |
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369 values.append (val); |
9 | 370 |
371 } | |
25 | 372 |
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373 oct_value = Cell (values); |
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374 } |
9 | 375 |
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376 static void |
179
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377 pytuple_to_cellarray (octave_value& oct_value, const boost::python::tuple& tuple) |
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378 { |
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379 octave_idx_type length = boost::python::extract<octave_idx_type> (tuple.attr ("__len__") ()); |
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380 octave_value_list values; |
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381 |
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382 for (octave_idx_type i = 0; i < length; i++) |
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383 { |
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384 octave_value val; |
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385 |
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386 pyobj_to_octvalue (val, tuple[i]); |
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387 values.append (val); |
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388 |
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389 } |
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390 |
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391 oct_value = Cell (values); |
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392 } |
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393 |
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394 static void |
146
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395 pydict_to_octmap (octave_value& oct_value, const boost::python::dict& dict) |
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396 { |
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397 boost::python::list list = dict.items (); |
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398 octave_idx_type length = boost::python::extract<octave_idx_type> (list.attr ("__len__") ()); |
9 | 399 |
146
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400 dim_vector dims = dim_vector (1, 1); |
9 | 401 |
146
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402 octave_value_list vals (length); |
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403 string_vector keys (length); |
43
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404 |
146
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405 // Extract all keys and convert values. Remember whether dimensions |
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406 // match. |
107
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407 |
146
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408 for (octave_idx_type i = 0; i < length; i++) |
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409 { |
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410 std::string& key = keys[i]; |
43
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411 |
146
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412 boost::python::tuple tuple = |
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413 boost::python::extract<boost::python::tuple> (list[i]) (); |
9 | 414 |
146
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415 boost::python::extract<std::string> str (tuple[0]); |
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416 if (! str.check ()) |
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417 throw object_convert_exception ( |
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418 std::string ("Can not convert key of type ") |
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419 + PyEval_GetFuncName (boost::python::object (tuple[0]).ptr ()) |
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420 + PyEval_GetFuncDesc (boost::python::object (tuple[0]).ptr ()) |
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421 + " to a structure field name. Field names must be strings."); |
43
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422 |
146
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423 key = str (); |
43
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424 |
146
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425 if (! valid_identifier (key)) |
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426 throw object_convert_exception ( |
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427 std::string ("Can not convert key `") + key + "' to a structure " |
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428 "field name. Field names must be valid Octave identifiers."); |
43
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429 |
146
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430 octave_value& val = vals(i); |
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431 |
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432 pyobj_to_octvalue (val, tuple[1]); |
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433 |
146
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434 if (val.is_cell ()) |
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435 { |
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436 if (i == 0) |
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437 dims = val.dims (); |
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438 else if (val.numel () != 1 && val.dims () != dims) |
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439 throw object_convert_exception ( |
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440 "Dimensions of the struct fields do not match"); |
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441 } |
9 | 442 } |
443 | |
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444 octave_map map = octave_map (dims); |
9 | 445 |
146
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446 for (octave_idx_type i = 0; i < length; i++) |
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447 { |
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448 std::string& key = keys[i]; |
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449 octave_value val = vals(i); |
9 | 450 |
146
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451 if (val.is_cell ()) |
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452 { |
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453 const Cell c = val.cell_value (); |
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454 if (c.numel () == 1) |
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455 { |
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456 map.assign (key, Cell (dims, c(0))); |
68
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457 } |
146
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458 else |
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459 { |
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460 map.assign (key, c); |
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461 } |
9 | 462 } |
146
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463 else |
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464 map.assign (key, Cell (dims, val)); |
9 | 465 } |
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466 oct_value = map; |
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467 } |
9 | 468 |
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469 static std::string |
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470 pyunicode_to_utf8 (PyObject *unicode) |
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471 { |
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472 std::string str; |
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473 PyObject *utf8 = PyUnicode_AsUTF8String (unicode); |
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474 str.assign (PyBytes_AsString (utf8), PyBytes_Size (utf8)); |
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475 Py_DECREF (utf8); |
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476 return str; |
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477 } |
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478 |
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479 static void |
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480 pyobj_to_oct_pyobject (octave_value& oct_value, |
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481 const boost::python::object& py_object) |
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482 { |
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483 object main_module = import ("__main__"); |
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484 object main_namespace = main_module.attr ("__dict__"); |
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485 object builtins_module; |
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486 pytave::get_builtins_module (builtins_module); |
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487 object hex_function = builtins_module.attr ("hex"); |
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488 object id_function = builtins_module.attr ("id"); |
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489 object idtmp = hex_function (id_function (py_object)); |
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490 std::string id = extract<std::string> (idtmp); |
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491 |
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492 // Ensure we have a __InOct__ dict, and then put `res` into it |
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493 exec ("if not (\"__InOct__\" in vars() or \"__InOct__\" in globals()):\n" |
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494 " __InOct__ = dict()\n" |
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495 " # FIXME: make it accessible elsewhere?\n" |
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496 " import __main__\n" |
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497 " __main__.__InOct__ = __InOct__\n", |
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498 main_namespace, main_namespace); |
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499 main_namespace["__InOct__"][id] = py_object; |
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500 // Create @pyobject |
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501 oct_value = feval ("pyobject", ovl (0, id), 2); |
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502 } |
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503 |
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504 void pyobj_to_octvalue (octave_value& oct_value, |
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505 const boost::python::object& py_object) |
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506 { |
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507 extract<long> longx (py_object); |
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508 extract<bool> boolx (py_object); |
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509 extract<double> doublex (py_object); |
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510 extract<Complex> complexx (py_object); |
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511 extract<std::string> stringx (py_object); |
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512 extract<std::wstring> wstringx (py_object); |
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513 extract<numeric::array> arrayx (py_object); |
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514 extract<boost::python::list> listx (py_object); |
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515 extract<boost::python::dict> dictx (py_object); |
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516 extract<boost::python::tuple> tuplex (py_object); |
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517 |
184
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518 if (boolx.check () && PyBool_Check ((PyArrayObject*)py_object.ptr ())) |
183
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519 oct_value = boolx (); |
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520 else if (longx.check ()) |
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521 oct_value = longx (); |
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522 else if (doublex.check ()) |
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523 oct_value = doublex (); |
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524 else if (complexx.check ()) |
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525 oct_value = complexx (); |
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526 else if (arrayx.check ()) |
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527 pyarr_to_octvalue (oct_value, (PyArrayObject*)py_object.ptr ()); |
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528 else if (stringx.check ()) |
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529 oct_value = stringx (); |
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530 else if (wstringx.check ()) |
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531 oct_value = pyunicode_to_utf8 (py_object.ptr ()); |
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532 else |
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533 pyobj_to_oct_pyobject (oct_value, py_object); |
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534 } |
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535 |
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536 void pytuple_to_octlist (octave_value_list& octave_list, |
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537 const boost::python::tuple& python_tuple) |
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538 { |
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539 int length = extract<int> (python_tuple.attr ("__len__") ()); |
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540 |
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541 for (int i = 0; i < length; i++) |
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542 { |
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543 pyobj_to_octvalue (octave_list(i), python_tuple[i]); |
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544 } |
146
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545 } |
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546 } |