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annotate libinterp/corefcn/defun-int.h @ 20612:7374a3a6d594

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use new string_value method to handle value extraction errors * urlwrite.cc: Use new string_value method.
author John W. Eaton <jwe@octave.org>
date Thu, 08 Oct 2015 17:26:40 -0400
parents c547458dc10e
children
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1 /*
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2
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3 Copyright (C) 1994-2015 John W. Eaton
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4
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5 This file is part of Octave.
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6
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7 Octave 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 Octave 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 Octave; 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 (octave_defun_int_h)
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24 #define octave_defun_int_h 1
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25
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26 #include <string>
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27
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28 #include "ov-builtin.h"
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29 #include "ov-dld-fcn.h"
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30 #include "symtab.h"
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31 #include "version.h"
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32
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33 class octave_value;
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34
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35 extern OCTINTERP_API void print_usage (void);
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36 extern OCTINTERP_API void print_usage (const std::string&);
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37
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38 extern OCTINTERP_API void check_version (const std::string& version,
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39 const std::string& fcn);
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40
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41 extern OCTINTERP_API void
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42 install_builtin_function (octave_builtin::fcn f, const std::string& name,
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43 const std::string& file, const std::string& doc,
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44 bool can_hide_function = true);
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45
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46 extern OCTINTERP_API void
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47 install_dld_function (octave_dld_function::fcn f, const std::string& name,
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48 const octave_shlib& shl, const std::string& doc,
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49 bool relative = false);
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51 extern OCTINTERP_API void
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52 install_mex_function (void *fptr, bool fmex, const std::string& name,
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53 const octave_shlib& shl, bool relative = false);
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54
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55 extern OCTINTERP_API void
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56 alias_builtin (const std::string& alias, const std::string& name);
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57
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58 // Gets the shlib of the currently executing DLD function, if any.
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59 extern OCTINTERP_API octave_shlib
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60 get_current_shlib (void);
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61
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62 // This is a convenience class that calls the above function automatically at
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63 // construction time. When deriving new classes, you can either use it as a
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64 // field or as a parent (with multiple inheritance).
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65
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66 class octave_auto_shlib : public octave_shlib
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67 {
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68 public:
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69 octave_auto_shlib (void)
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70 : octave_shlib (get_current_shlib ()) { }
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71 octave_auto_shlib (const octave_shlib& shl)
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72 : octave_shlib (shl) { }
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73 };
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74
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75 extern OCTINTERP_API bool
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76 defun_isargout (int, int);
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77
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78 extern OCTINTERP_API void
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79 defun_isargout (int, int, bool *);
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80
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81 #define DECLARE_FUNX(name, args_name, nargout_name) \
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82 OCTAVE_EXPORT octave_value_list \
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83 name (const octave_value_list& args_name, int nargout_name)
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84
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85 #define DECLARE_FUN(name, args_name, nargout_name) \
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86 DECLARE_FUNX (F ## name, args_name, nargout_name)
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87
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88 // Define the code that will be used to insert the new function into
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89 // the symbol table. We look for this name instead of the actual
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90 // function so that we can easily install the doc std::string too.
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91
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92 typedef bool (*octave_dld_fcn_installer) (const octave_shlib&, bool relative);
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93
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94 typedef octave_function *
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95 (*octave_dld_fcn_getter) (const octave_shlib&, bool relative);
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96
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97 #define DEFINE_FUN_INSTALLER_FUN(name, doc) \
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98 DEFINE_FUNX_INSTALLER_FUN(#name, F ## name, G ## name, doc)
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99
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100 #define DEFINE_FUNX_INSTALLER_FUN(name, fname, gname, doc) \
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101 extern "C" \
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102 OCTAVE_EXPORT \
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103 octave_function * \
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104 gname (const octave_shlib& shl, bool relative) \
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105 { \
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106 check_version (OCTAVE_API_VERSION, name); \
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107 \
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108 octave_dld_function *fcn = octave_dld_function::create (fname, shl, name, doc); \
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109 \
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110 if (relative) \
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111 fcn->mark_relative (); \
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112 \
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113 return fcn; \
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114 }
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115
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116 // MAKE_BUILTINS is defined to extract function names and related
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117 // information and create the *.df files that are eventually used to
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118 // create the builtins.cc file.
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119
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120 #if defined (MAKE_BUILTINS)
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121
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122 // Generate code to install name in the symbol table. The script
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123 // mkdefs will create a .def file for every .cc file that uses DEFUN,
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124 // or DEFCMD.
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125
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126 #define DEFUN_INTERNAL(name, args_name, nargout_name, doc) \
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127 BEGIN_INSTALL_BUILTIN \
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128 XDEFUN_INTERNAL (name, args_name, nargout_name, doc) \
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129 END_INSTALL_BUILTIN
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130
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131 #define DEFCONSTFUN_INTERNAL(name, args_name, nargout_name, doc) \
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132 BEGIN_INSTALL_BUILTIN \
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133 XDEFCONSTFUN_INTERNAL (name, args_name, nargout_name, doc) \
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134 END_INSTALL_BUILTIN
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135
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136 #define DEFUNX_INTERNAL(name, fname, args_name, nargout_name, doc) \
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137 BEGIN_INSTALL_BUILTIN \
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138 XDEFUNX_INTERNAL (name, fname, args_name, nargout_name, doc) \
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139 END_INSTALL_BUILTIN
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140
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141 // Generate code to install name in the symbol table. The script
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142 // mkdefs will create a .def file for every .cc file that uses
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143 // DEFUN_DLD.
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144
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145 #define DEFUN_DLD_INTERNAL(name, args_name, nargout_name, doc) \
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146 BEGIN_INSTALL_BUILTIN \
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147 XDEFUN_DLD_INTERNAL (name, args_name, nargout_name, doc) \
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148 END_INSTALL_BUILTIN
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149
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150 #define DEFUNX_DLD_INTERNAL(name, fname, args_name, nargout_name, doc) \
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151 BEGIN_INSTALL_BUILTIN \
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152 XDEFUNX_DLD_INTERNAL (name, fname, args_name, nargout_name, doc) \
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153 END_INSTALL_BUILTIN
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154
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155 // Generate code for making another name for an existing function.
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156
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157 #define DEFALIAS_INTERNAL(alias, name) \
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158 BEGIN_INSTALL_BUILTIN \
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159 XDEFALIAS_INTERNAL(alias, name) \
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160 END_INSTALL_BUILTIN
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161
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162 #else /* ! MAKE_BUILTINS */
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163
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164 // Generate the first line of the function definition. This ensures
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165 // that the internal functions all have the same signature.
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166
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167 #define DEFUN_INTERNAL(name, args_name, nargout_name, doc) \
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168 DECLARE_FUN (name, args_name, nargout_name)
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169
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170 #define DEFCONSTFUN_INTERNAL(name, args_name, nargout_name, doc) \
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171 DECLARE_FUN (name, args_name, nargout_name)
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172
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173 #define DEFUNX_INTERNAL(name, fname, args_name, nargout_name, doc) \
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174 DECLARE_FUNX (fname, args_name, nargout_name)
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175
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176 // No definition is required for an alias.
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177
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178 #define DEFALIAS_INTERNAL(alias, name)
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179
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180 #endif /* ! MAKE_BUILTINS */
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181
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182 #endif