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annotate libinterp/octave-value/ov-fcn.h @ 18691:336e64e9e6e3 draft

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Fully int8 type support
author LYH <lyh.kernel@gmail.com>
date Fri, 21 Mar 2014 14:59:39 -0400
parents 97e49b588f5d
children b0e8cc676396
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /*
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2
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3 Copyright (C) 1996-2013 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_ov_fcn_h)
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24 #define octave_ov_fcn_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 "oct-time.h"
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29 #include "str-vec.h"
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30
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31 #include "oct-alloc.h"
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32 #include "oct-obj.h"
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33 #include "ov-base.h"
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34 #include "ov-typeinfo.h"
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35 #include "symtab.h"
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36
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37 class tree_walker;
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38
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39 // Functions.
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40
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41 class
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42 OCTINTERP_API
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43 octave_function : public octave_base_value
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44 {
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45 public:
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46
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47 octave_function (void)
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48 : relative (false), locked (false), private_function (false),
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49 xdispatch_class (), my_name (), my_dir_name (), doc () { }
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50
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51 ~octave_function (void) { }
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52
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53 octave_base_value *clone (void) const;
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54 octave_base_value *empty_clone (void) const;
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55
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56 bool is_defined (void) const { return true; }
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57
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58 bool is_function (void) const { return true; }
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59
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60 virtual bool is_system_fcn_file (void) const { return false; }
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61
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62 virtual std::string fcn_file_name (void) const { return std::string (); }
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63
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64 virtual std::string src_file_name (void) const { return std::string (); }
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65
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66 // The name to show in the profiler (also used as map-key).
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67 virtual std::string profiler_name (void) const { return name (); }
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68
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69 virtual std::string parent_fcn_name (void) const { return std::string (); }
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70
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71 virtual symbol_table::scope_id parent_fcn_scope (void) const { return -1; }
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72
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73 virtual void mark_fcn_file_up_to_date (const octave_time&) { }
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74
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75 virtual symbol_table::scope_id scope (void) { return -1; }
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76
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77 virtual octave_time time_parsed (void) const
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78 { return octave_time (static_cast<time_t> (0)); }
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79
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80 virtual octave_time time_checked (void) const
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81 { return octave_time (static_cast<time_t> (0)); }
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82
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83 virtual bool is_subfunction (void) const { return false; }
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84
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85 virtual bool is_class_constructor (const std::string& = std::string ()) const
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86 { return false; }
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87
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88 virtual bool
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89 is_classdef_constructor (const std::string& = std::string ()) const
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90 { return false; }
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91
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92 virtual bool is_class_method (const std::string& = std::string ()) const
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93 { return false; }
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94
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95 virtual bool takes_varargs (void) const { return false; }
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96
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97 virtual bool takes_var_return (void) const { return false; }
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98
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99 void stash_dispatch_class (const std::string& nm) { xdispatch_class = nm; }
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100
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101 std::string dispatch_class (void) const { return xdispatch_class; }
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102
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103 virtual void
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104 mark_as_private_function (const std::string& cname = std::string ())
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105 {
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106 private_function = true;
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107 xdispatch_class = cname;
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108 }
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109
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110 bool is_private_function (void) const { return private_function; }
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111
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112 bool is_private_function_of_class (const std::string& nm) const
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113 { return private_function && xdispatch_class == nm; }
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114
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115 virtual bool
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116 is_anonymous_function_of_class (const std::string& = std::string ()) const
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117 { return false; }
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118
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119 std::string dir_name (void) const { return my_dir_name; }
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120
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121 void stash_dir_name (const std::string& dir) { my_dir_name = dir; }
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122
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123 void lock (void)
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124 {
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125 this->lock_subfunctions ();
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126 locked = true;
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127 }
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128
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129 void unlock (void)
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130 {
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131 this->unlock_subfunctions ();
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132 locked = false;
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133 }
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134
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135 bool islocked (void) const { return locked; }
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136
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137 virtual void lock_subfunctions (void) { }
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138
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139 virtual void unlock_subfunctions (void) { }
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140
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141 virtual void maybe_relocate_end (void) { }
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142
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143 // Not valid until after the function is completley parsed.
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144 virtual bool has_subfunctions (void) const { return false; }
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145
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146 virtual void stash_subfunction_names (const std::list<std::string>&) { }
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147
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148 virtual std::list<std::string> subfunction_names (void) const
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149 {
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150 return std::list<std::string> ();
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151 }
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152
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153 void mark_relative (void) { relative = true; }
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154
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155 bool is_relative (void) const { return relative; }
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156
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157 std::string name (void) const { return my_name; }
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158
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159 void document (const std::string& ds) { doc = ds; }
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160
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161 std::string doc_string (void) const { return doc; }
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162
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163 virtual void unload (void) { }
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164
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165 virtual void accept (tree_walker&) { }
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166
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167 virtual bool is_postfix_index_handled (char type) const
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168 { return (type == '(' || type == '{'); }
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169
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170 protected:
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171
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172 octave_function (const std::string& nm,
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173 const std::string& ds = std::string ())
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174 : relative (false), locked (false), private_function (false),
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175 xdispatch_class (), my_name (nm), my_dir_name (), doc (ds) { }
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176
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177 // TRUE if this function was found from a relative path element.
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178 bool relative;
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179
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180 // TRUE if this function is tagged so that it can't be cleared.
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181 bool locked;
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182
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183 // TRUE means this is a private function.
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184 bool private_function;
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185
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186 // If this object is a class method or constructor, or a private
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187 // function inside a class directory, this is the name of the class
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188 // to which the method belongs.
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189 std::string xdispatch_class;
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190
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191 // The name of this function.
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192 std::string my_name;
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193
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194 // The name of the directory in the path where we found this
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195 // function. May be relative.
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196 std::string my_dir_name;
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197
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198 // The help text for this function.
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199 std::string doc;
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200
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201 private:
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202
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203 // No copying!
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204
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205 octave_function (const octave_function& f);
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206
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207 octave_function& operator = (const octave_function& f);
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208
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209 DECLARE_OCTAVE_ALLOCATOR
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210 };
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211
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212 #endif