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maint: update Octave Project Developers copyright for the new year
author John W. Eaton <jwe@octave.org>
date Fri, 22 Dec 2023 12:08:17 -0500
parents 1daf8bfceac3
children
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1 ////////////////////////////////////////////////////////////////////////
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2 //
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3 // Copyright (C) 2013-2024 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 (octave_hook_fcn_h)
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27 #define octave_hook_fcn_h 1
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28
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29 #include "octave-config.h"
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30
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31 #include <memory>
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32 #include <string>
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33
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34 #include "ovl.h"
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35 #include "ov.h"
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36 #include "ov-fcn-handle.h"
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37 #include "variables.h"
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38
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39 OCTAVE_BEGIN_NAMESPACE(octave)
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40
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41 class base_hook_function
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42 {
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43 public:
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44
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45 OCTAVE_DEFAULT_CONSTRUCT_COPY (base_hook_function)
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46
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47 virtual ~base_hook_function () = default;
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48
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49 virtual std::string id () const { return ""; }
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50
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51 virtual bool is_valid () const { return false; }
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52
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53 virtual void eval (const octave_value_list&) { }
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54 };
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55
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56 class hook_function
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57 {
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58 public:
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59
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60 hook_function ()
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61 {
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62 static std::shared_ptr<base_hook_function>
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63 nil_rep (new base_hook_function ());
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64
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65 m_rep = nil_rep;
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66 }
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67
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68 hook_function (const octave_value& f,
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69 const octave_value& d = octave_value ());
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70
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71 OCTAVE_DEFAULT_COPY (hook_function)
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72
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73 ~hook_function () = default;
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74
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75 std::string id () const { return m_rep->id (); }
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76
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77 bool is_valid () const { return m_rep->is_valid (); }
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78
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79 void eval (const octave_value_list& initial_args)
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80 {
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81 m_rep->eval (initial_args);
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82 }
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83
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84 private:
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85
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86 std::shared_ptr<base_hook_function> m_rep;
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87 };
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88
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89 class named_hook_function : public base_hook_function
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90 {
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91 public:
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93 named_hook_function () = delete;
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94
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95 named_hook_function (const std::string& n, const octave_value& d)
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96 : m_name (n), m_data (d)
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97 { }
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98
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99 OCTAVE_DEFAULT_COPY_DELETE (named_hook_function)
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100
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101 void eval (const octave_value_list& initial_args);
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102
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103 std::string id () const { return m_name; }
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104
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105 bool is_valid () const { return is_valid_function (m_name); }
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106
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107 private:
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108
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109 std::string m_name;
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110
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111 octave_value m_data;
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112 };
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113
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114 class fcn_handle_hook_function : public base_hook_function
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115 {
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116 public:
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117
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118 fcn_handle_hook_function () = delete;
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119
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120 fcn_handle_hook_function (const octave_value& fh_arg, const octave_value& d)
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121 : m_ident (), m_valid (false), m_fcn_handle (fh_arg), m_data (d)
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122 {
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123 octave_fcn_handle *fh = m_fcn_handle.fcn_handle_value (true);
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124
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125 if (fh)
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126 {
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127 m_valid = true;
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128
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129 std::ostringstream buf;
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130 buf << fh;
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131 m_ident = fh->fcn_name () + ':' + buf.str ();
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132 }
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133 }
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134
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135 OCTAVE_DEFAULT_COPY_DELETE (fcn_handle_hook_function)
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136
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137 void eval (const octave_value_list& initial_args);
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138
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139 std::string id () const { return m_ident; }
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140
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141 bool is_valid () const { return m_valid; }
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142
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143 private:
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144
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145 std::string m_ident;
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146
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147 bool m_valid;
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148
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149 octave_value m_fcn_handle;
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150
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151 octave_value m_data;
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152 };
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153
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154 class hook_function_list
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155 {
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156 public:
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157
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158 typedef std::map<std::string, hook_function> map_type;
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159
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160 typedef map_type::iterator iterator;
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161 typedef map_type::const_iterator const_iterator;
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162
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163 OCTAVE_DEFAULT_CONSTRUCT_COPY_DELETE (hook_function_list)
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164
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165 bool empty () const { return m_fcn_map.empty (); }
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166
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167 void clear () { m_fcn_map.clear (); }
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168
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169 void insert (const std::string& id, const hook_function& f)
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170 {
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171 m_fcn_map[id] = f;
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172 }
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173
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174 iterator find (const std::string& id)
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175 {
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176 return m_fcn_map.find (id);
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177 }
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178
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179 const_iterator find (const std::string& id) const
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180 {
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181 return m_fcn_map.find (id);
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182 }
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183
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184 iterator end () { return m_fcn_map.end (); }
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185
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186 const_iterator end () const { return m_fcn_map.end (); }
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187
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188 void erase (iterator p) { m_fcn_map.erase (p); }
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189
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190 void run (const octave_value_list& initial_args = octave_value_list ())
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191 {
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192 auto p = m_fcn_map.begin ();
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193
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194 while (p != m_fcn_map.end ())
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195 {
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196 std::string hook_fcn_id = p->first;
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197 hook_function hook_fcn = p->second;
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198
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199 auto q = p++;
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200
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201 if (hook_fcn.is_valid ())
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202 hook_fcn.eval (initial_args);
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203 else
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204 m_fcn_map.erase (q);
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205 }
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206 }
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207
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208 private:
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209
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210 map_type m_fcn_map;
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211 };
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212
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213 OCTAVE_END_NAMESPACE(octave)
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214
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215 #endif