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annotate libinterp/octave-value/cdef-package.cc @ 30564:796f54d4ddbf stable

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update Octave Project Developers copyright for the new year In files that have the "Octave Project Developers" copyright notice, update for 2021. In all .txi and .texi files except gpl.txi and gpl.texi in the doc/liboctave and doc/interpreter directories, change the copyright to "Octave Project Developers", the same as used for other source files. Update copyright notices for 2022 (not done since 2019). For gpl.txi and gpl.texi, change the copyright notice to be "Free Software Foundation, Inc." and leave the date at 2007 only because this file only contains the text of the GPL, not anything created by the Octave Project Developers. Add Paul Thomas to contributors.in.
author John W. Eaton <jwe@octave.org>
date Tue, 28 Dec 2021 18:22:40 -0500
parents 0e0cc2760540
children 670a0d878af1
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1 ////////////////////////////////////////////////////////////////////////
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2 //
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3 // Copyright (C) 2012-2022 The Octave Project Developers
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4 //
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5 // See the file COPYRIGHT.md in the top-level directory of this
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6 // distribution or <https://octave.org/copyright/>.
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7 //
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8 // This file is part of Octave.
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9 //
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10 // Octave is free software: you can redistribute it and/or modify it
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11 // under the terms of the GNU General Public License as published by
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12 // the Free Software Foundation, either version 3 of the License, or
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13 // (at your option) any later version.
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14 //
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15 // Octave is distributed in the hope that it will be useful, but
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16 // WITHOUT ANY WARRANTY; without even the implied warranty of
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17 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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18 // GNU General Public License for more details.
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19 //
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20 // You should have received a copy of the GNU General Public License
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21 // along with Octave; see the file COPYING. If not, see
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22 // <https://www.gnu.org/licenses/>.
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23 //
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24 ////////////////////////////////////////////////////////////////////////
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25
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26 #if defined (HAVE_CONFIG_H)
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27 # include "config.h"
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28 #endif
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29
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30 #include <algorithm>
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31 #include <iomanip>
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32
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33 #include "cdef-class.h"
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34 #include "cdef-manager.h"
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35 #include "cdef-utils.h"
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36 #include "errwarn.h"
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37 #include "interpreter-private.h"
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38 #include "interpreter.h"
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39 #include "load-path.h"
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40 #include "ov-builtin.h"
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41 #include "ov-classdef.h"
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42 #include "ov-fcn-handle.h"
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43 #include "ov-usr-fcn.h"
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44 #include "parse.h"
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45 #include "pt-assign.h"
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46 #include "pt-classdef.h"
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47 #include "pt-idx.h"
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48 #include "pt-misc.h"
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49 #include "pt-stmt.h"
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50
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51 // Define to 1 to enable debugging statements.
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52 #define DEBUG_TRACE 0
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53
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54 namespace octave
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55 {
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56 void
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57 cdef_package::cdef_package_rep::install_class (const cdef_class& cls,
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58 const std::string& nm)
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59 {
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60 m_class_map[nm] = cls;
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61
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62 m_member_count++;
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63 }
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64
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65 void
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66 cdef_package::cdef_package_rep::install_function (const octave_value& fcn,
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67 const std::string& nm)
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68 {
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69 m_function_map[nm] = fcn;
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70 }
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71
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72 void
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73 cdef_package::cdef_package_rep::install_package (const cdef_package& pack,
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74 const std::string& nm)
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75 {
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76 m_package_map[nm] = pack;
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77
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78 m_member_count++;
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79 }
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80
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81 template <typename T1, typename T2>
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82 Cell
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83 map2Cell (const std::map<T1, T2>& m)
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84 {
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85 Cell retval (1, m.size ());
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86 int i = 0;
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87
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88 for (auto it = m.begin (); it != m.end (); ++it, ++i)
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89 retval(i) = to_ov (it->second);
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90
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91 return retval;
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92 }
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93
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94 Cell
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95 cdef_package::cdef_package_rep::get_classes (void) const
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96 {
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97 return map2Cell (m_class_map);
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98 }
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99
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100 Cell
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101 cdef_package::cdef_package_rep::get_functions (void) const
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102 {
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103 return map2Cell (m_function_map);
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104 }
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105
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106 Cell
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107 cdef_package::cdef_package_rep::get_packages (void) const
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108 {
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109 return map2Cell (m_package_map);
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110 }
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111
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112 octave_value
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113 cdef_package::cdef_package_rep::find (const std::string& nm)
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114 {
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115 std::string symbol_name = get_name () + '.' + nm;
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116
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117 interpreter& interp
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118 = __get_interpreter__ ("cdef_package::cdef_package_rep::find");
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119
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120 return interp.find (symbol_name);
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121 }
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122
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123 octave_value_list
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124 cdef_package::cdef_package_rep::meta_subsref
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125 (const std::string& type, const std::list<octave_value_list>& idx,
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126 int nargout)
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127 {
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128 octave_value_list retval;
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129
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130 switch (type[0])
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131 {
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132 case '.':
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133 {
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134 if (idx.front ().length () != 1)
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135 error ("invalid meta.package indexing");
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136
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137 std::string nm = idx.front ()(0).xstring_value ("invalid meta.package indexing, expected a symbol name");
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138
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139 #if DEBUG_TRACE
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140 std::cerr << "meta.package query: " << nm << std::endl;
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141 #endif
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142
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143 octave_value o = find (nm);
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144
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145 if (! o.is_defined ())
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146 error ("member '%s' in package '%s' does not exist",
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147 nm.c_str (), get_name ().c_str ());
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148
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149 if (o.is_function ())
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150 {
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151 octave_function *fcn = o.function_value ();
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152
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153 // NOTE: the case where the package query is the last
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154 // part of this subsref index is handled in the parse
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155 // tree, because there is some logic to handle magic
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156 // "end" that makes it impossible to execute the
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157 // function call at this stage.
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158
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159 if (type.size () > 1
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160 && ! fcn->accepts_postfix_index (type[1]))
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161 {
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162 octave_value_list tmp_args;
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163
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164 retval = feval (o, tmp_args, nargout);
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165 }
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166 else
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167 retval(0) = o;
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168
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169 if (type.size () > 1 && idx.size () > 1)
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170 retval = retval(0).next_subsref (nargout, type,
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171 idx, 1);
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172 }
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173 else if (type.size () > 1 && idx.size () > 1)
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174 retval = o.next_subsref (nargout, type, idx, 1);
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175 else
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176 retval(0) = o;
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177 }
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178 break;
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179
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180 default:
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181 error ("invalid meta.package indexing");
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182 break;
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183 }
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184
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185 return retval;
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186 }
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187
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188 void
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189 cdef_package::cdef_package_rep::meta_release (void)
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190 {
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191 // FIXME: Do we really want to unregister the package, as it
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192 // could still be referenced by classes or sub-packages?
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193 // If the package object is recreated later on, it won't
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194 // match the one already referenced by those classes or
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195 // sub-packages.
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196
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197 cdef_manager& cdm
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198 = __get_cdef_manager__ ("cdef_package::cdef_package_rep::meta_release");
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199
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200 // Don't delete the "meta" package.
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201 if (this != cdm.meta ().get_rep ())
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202 cdm.unregister_package (wrap ());
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203 }
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204 }