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annotate libinterp/corefcn/fcn-info.h @ 24263:3b302b2890d7

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disentangle symbol_record, scope, and fcn_info from symbol_table class * fcn-info.cc, fcn-info.h, scope.cc, scope.h, symrec.cc, symrec.h: New files extracted from symtab.h and symtab.cc. * libinterp/corefcn/module.mk: Update. * symrec.cc (symbol_record::symbol_record_rep::xglobal_varref): Don't access private symbol_table internals directly. * scope.h, scope.cc (scope::find, scope::builtin_find, scope::clear_global, scope::clear_global_pattern): Don't access private symbol_table internals directly. * symtab.h, symtab.cc (symbol_table::builtin_find): Don't forward to current scope. Look directly in fcn_info table. (symbol_table::global_varref, symbol_table::fcn_table_find, symbol_table::erase_global, symbol_table::erase_global_pattern): New functions. * scope.h (scope::context_id): New typedef. * symrec.h (symbol_record::context_id): New typedef. * symtab.h (symbol_table::context_id): Update. * symtab.h, symtab.cc (symbol_table::dummy_octave_value): Delete static data member. * symtab.h (symbol_table::context_id): Delete typedef. (symbol_table::symbol_record, symbol_table::scope, symbol_table::fcn_info): New typedefs.
author John W. Eaton <jwe@octave.org>
date Thu, 16 Nov 2017 16:06:31 -0500
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children 5abd4d7cbd36
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24263
3b302b2890d7 disentangle symbol_record, scope, and fcn_info from symbol_table class
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1 /*
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2
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3 Copyright (C) 1993-2017 John W. Eaton
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4 Copyright (C) 2009 VZLU Prague
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5
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6 This file is part of Octave.
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7
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8 Octave is free software; you can redistribute it and/or modify it
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9 under the terms of the GNU General Public License as published by
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10 the Free Software Foundation; either version 3 of the License, or
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11 (at your option) any later version.
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12
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13 Octave is distributed in the hope that it will be useful, but
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14 WITHOUT ANY WARRANTY; without even the implied warranty of
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15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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16 GNU General Public License for more details.
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17
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18 You should have received a copy of the GNU General Public License
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19 along with Octave; see the file COPYING. If not, see
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20 <http://www.gnu.org/licenses/>.
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21
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22 */
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23
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24 #if ! defined (octave_fcn_info_h)
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25 #define octave_fcn_info_h 1
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26
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27 #include "octave-config.h"
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28
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29 #include <list>
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30 #include <map>
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31 #include <string>
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32
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33 #include "oct-refcount.h"
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34
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35 #include "ov.h"
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36 #include "ovl.h"
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37
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38 namespace octave
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39 {
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40 class fcn_info
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41 {
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42 public:
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43
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44 typedef std::map<std::string, octave_value>::const_iterator
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45 str_val_const_iterator;
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46 typedef std::map<std::string, octave_value>::iterator str_val_iterator;
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47
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48 private:
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49
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50 class fcn_info_rep
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51 {
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52 public:
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53
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54 fcn_info_rep (const std::string& nm)
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55 : name (nm), package_name (), local_functions (),
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56 private_functions (), class_constructors (), class_methods (),
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57 cmdline_function (), autoload_function (), function_on_path (),
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58 built_in_function (), count (1)
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59 {
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60 size_t pos = name.rfind ('.');
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61
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62 if (pos != std::string::npos)
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63 {
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64 package_name = name.substr (0, pos);
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65 name = name.substr (pos+1);
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66 }
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67 }
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68
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69 // No copying!
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70
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71 fcn_info_rep (const fcn_info_rep&) = delete;
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72
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73 fcn_info_rep& operator = (const fcn_info_rep&) = delete;
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74
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75 ~fcn_info_rep (void) = default;
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76
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77 octave_value install_local_function (const std::string& file_name);
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78
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79 octave_value load_private_function (const std::string& dir_name);
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80
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81 octave_value load_class_constructor (void);
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82
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83 octave_value load_class_method (const std::string& dispatch_type);
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84
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85 octave_value find (const octave_value_list& args, bool local_funcs);
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86
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87 octave_value builtin_find (void);
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88
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89 octave_value find_method (const std::string& dispatch_type);
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90
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91 octave_value find_autoload (void);
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92
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93 octave_value find_package (void);
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94
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95 octave_value find_user_function (void);
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96
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97 bool is_user_function_defined (void) const
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98 {
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99 return function_on_path.is_defined ();
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100 }
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101
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102 octave_value find_function (const octave_value_list& args,
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103 bool local_funcs)
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104 {
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105 return find (args, local_funcs);
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106 }
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107
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108 void install_cmdline_function (const octave_value& f)
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109 {
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110 cmdline_function = f;
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111 }
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112
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113 void install_local_function (const octave_value& f,
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114 const std::string& file_name)
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115 {
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116 local_functions[file_name] = f;
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117 }
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118
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119 void install_user_function (const octave_value& f)
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120 {
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121 function_on_path = f;
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122 }
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123
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124 void install_built_in_function (const octave_value& f)
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125 {
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126 built_in_function = f;
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127 }
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128
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129 void install_built_in_dispatch (const std::string& klass);
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130
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131 template <typename T>
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132 void
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133 clear_map (std::map<T, octave_value>& map, bool force = false)
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134 {
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135 typename std::map<T, octave_value>::iterator p = map.begin ();
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136
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137 while (p != map.end ())
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138 {
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139 if (force || ! p->second.islocked ())
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140 map.erase (p++);
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141 else
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142 p++;
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143 }
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144 }
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145
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146 void clear_autoload_function (bool force = false)
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147 {
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148 if (force || ! autoload_function.islocked ())
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149 autoload_function = octave_value ();
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150 }
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151
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152 // We also clear command line functions here, as these are both
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153 // "user defined"
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154 void clear_user_function (bool force = false)
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155 {
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156 clear_autoload_function (force);
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157
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158 if (force || ! function_on_path.islocked ())
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159 function_on_path = octave_value ();
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160
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161 if (force || ! cmdline_function.islocked ())
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162 cmdline_function = octave_value ();
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163 }
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164
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165 void clear_mex_function (void)
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166 {
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167 if (function_on_path.is_mex_function ())
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168 clear_user_function ();
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169 }
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170
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171 void clear_package (void)
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172 {
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173 package = octave_value ();
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174 }
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175
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176 void clear (bool force = false)
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177 {
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178 clear_map (local_functions, force);
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179 clear_map (private_functions, force);
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180 clear_map (class_constructors, force);
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181 clear_map (class_methods, force);
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182
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183 clear_autoload_function (force);
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184 clear_user_function (force);
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185 clear_package ();
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186 }
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187
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188 octave_value dump (void) const;
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189
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190 std::string full_name (void) const
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191 {
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192 if (package_name.empty ())
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193 return name;
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194 else
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195 return package_name + '.' + name;
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196 }
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197
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198 std::string name;
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199
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200 std::string package_name;
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201
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202 // File name to function object.
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203 std::map<std::string, octave_value> local_functions;
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204
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205 // Directory name to function object.
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206 std::map<std::string, octave_value> private_functions;
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207
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208 // Class name to function object.
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209 std::map<std::string, octave_value> class_constructors;
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210
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211 // Dispatch type to function object.
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212 std::map<std::string, octave_value> class_methods;
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213
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214 octave_value cmdline_function;
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215
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216 octave_value autoload_function;
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217
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218 octave_value function_on_path;
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219
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220 octave_value package;
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221
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222 octave_value built_in_function;
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223
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224 refcount<size_t> count;
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225
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226 private:
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227
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228 octave_value xfind (const octave_value_list& args, bool local_funcs);
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229
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230 octave_value x_builtin_find (void);
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231 };
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232
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233 public:
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234
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235 fcn_info (const std::string& nm = "")
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236 : rep (new fcn_info_rep (nm)) { }
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237
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238 fcn_info (const fcn_info& fi) : rep (fi.rep)
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239 {
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240 rep->count++;
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241 }
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242
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243 fcn_info& operator = (const fcn_info& fi)
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244 {
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245 if (this != &fi)
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246 {
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247 if (--rep->count == 0)
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248 delete rep;
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249
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250 rep = fi.rep;
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251 rep->count++;
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252 }
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253
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254 return *this;
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255 }
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256
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257 ~fcn_info (void)
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258 {
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259 if (--rep->count == 0)
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260 delete rep;
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261 }
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262
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263 octave_value find (const octave_value_list& args = octave_value_list (),
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264 bool local_funcs = true)
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265 {
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266 return rep->find (args, local_funcs);
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267 }
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268
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269 octave_value builtin_find (void)
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270 {
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271 return rep->builtin_find ();
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272 }
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273
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274 octave_value find_method (const std::string& dispatch_type) const
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275 {
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276 return rep->find_method (dispatch_type);
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277 }
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278
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279 octave_value find_built_in_function (void) const
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280 {
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281 return rep->built_in_function;
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282 }
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283
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284 octave_value find_cmdline_function (void) const
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285 {
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286 return rep->cmdline_function;
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287 }
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288
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289 octave_value find_autoload (void)
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290 {
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291 return rep->find_autoload ();
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292 }
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293
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294 octave_value find_user_function (void)
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295 {
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296 return rep->find_user_function ();
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297 }
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298
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299 bool is_user_function_defined (void) const
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300 {
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301 return rep->is_user_function_defined ();
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302 }
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303
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304 octave_value find_function (const octave_value_list& args
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305 = octave_value_list (),
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306 bool local_funcs = true)
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307 {
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308 return rep->find_function (args, local_funcs);
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309 }
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310
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311 void install_cmdline_function (const octave_value& f)
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312 {
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313 rep->install_cmdline_function (f);
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314 }
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315
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316 void install_local_function (const octave_value& f,
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317 const std::string& file_name)
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318 {
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319 rep->install_local_function (f, file_name);
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320 }
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321
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322 void install_user_function (const octave_value& f)
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323 {
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324 rep->install_user_function (f);
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325 }
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326
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327 void install_built_in_function (const octave_value& f)
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328 {
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329 rep->install_built_in_function (f);
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330 }
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331
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332 void install_built_in_dispatch (const std::string& klass)
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333 {
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334 rep->install_built_in_dispatch (klass);
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335 }
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336
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337 void clear (bool force = false) { rep->clear (force); }
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338
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339 void clear_user_function (bool force = false)
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340 {
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341 rep->clear_user_function (force);
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342 }
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343
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344 void clear_autoload_function (bool force = false)
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345 {
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346 rep->clear_autoload_function (force);
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347 }
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348
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349 void clear_mex_function (void) { rep->clear_mex_function (); }
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350
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351 octave_value dump (void) const { return rep->dump (); }
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352
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353 private:
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354
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355 fcn_info_rep *rep;
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356 };
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357
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358 octave_value
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359 dump_function_map (const std::map<std::string, octave_value>& fcn_map);
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360 }
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361
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362 #endif