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annotate libinterp/octave-value/cdef-package.cc @ 29358:0a5b15007766 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.
author John W. Eaton <jwe@octave.org>
date Wed, 10 Feb 2021 09:52:15 -0500
parents bd51beb6205e
children 0e0cc2760540
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1 ////////////////////////////////////////////////////////////////////////
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2 //
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3 // Copyright (C) 2012-2021 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 class_map[nm] = cls;
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61
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62 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 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 package_map[nm] = pack;
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77
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78 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 (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 (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 (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 }