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annotate libinterp/octave-value/cdef-class.h @ 27923:bd51beb6205e

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update formatting of copyright notices * Use <https://octave.org/copyright/> instead of <https://octave.org/COPYRIGHT.html/>. * For consistency with other comments in the Octave sources, use C++-style comments for copyright blocks in C and C++ files. * Use delimiters above and below copyright blocks that are appropriate for the language used in the file. * Eliminate extra spacing inside copyright blocks. * lex.ll (looks_like_copyright): Also allow newlines and carriage returns before the word "Copyright". * scripts/mk-doc.pl (gethelp): Also skip empty comment lines. * bp-table.cc, type.m: Adjust tests.
author John W. Eaton <jwe@octave.org>
date Wed, 08 Jan 2020 11:59:41 -0500
parents 1891570abac8
children ec769a7ab9fb
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1 ////////////////////////////////////////////////////////////////////////
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2 //
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3 // Copyright (C) 2012-2020 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_cdef_class_h)
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27 #define octave_cdef_class_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 <map>
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32 #include <set>
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33 #include <string>
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34
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35 #include "oct-refcount.h"
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36
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37 #include "cdef-method.h"
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38 #include "cdef-object.h"
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39 #include "cdef-package.h"
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40 #include "cdef-property.h"
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41 #include "error.h"
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42 #include "ov.h"
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43 #include "ovl.h"
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44
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45 namespace octave
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46 {
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47 class interpreter;
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48 class tree_classdef;
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49
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50 class
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51 cdef_class : public cdef_meta_object
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52 {
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53 private:
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54
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55 class
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56 cdef_class_rep : public cdef_meta_object_rep
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57 {
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58 public:
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59 cdef_class_rep (void)
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60 : cdef_meta_object_rep (), member_count (0), handle_class (false),
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61 meta (false)
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62 { }
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63
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64 cdef_class_rep (const std::list<cdef_class>& superclasses);
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65
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66 cdef_class_rep& operator = (const cdef_class_rep&) = delete;
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67
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68 ~cdef_class_rep (void) = default;
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69
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70 cdef_object_rep * copy (void) const { return new cdef_class_rep (*this); }
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71
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72 bool is_class (void) const { return true; }
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73
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74 std::string get_name (void) const
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75 { return get ("Name").string_value (); }
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76
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77 void set_name (const std::string& nm) { put ("Name", nm); }
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78
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79 bool is_abstract (void) const { return get ("Abstract").bool_value (); }
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80
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81 bool is_sealed (void) const { return get ("Sealed").bool_value (); }
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82
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83 cdef_method find_method (const std::string& nm, bool local = false);
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84
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85 void install_method (const cdef_method& meth);
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86
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87 Cell get_methods (bool include_ctor);
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88
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89 std::map<std::string, cdef_method>
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90 get_method_map (bool only_inherited, bool include_ctor);
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91
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92 cdef_property find_property (const std::string& nm);
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93
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94 void install_property (const cdef_property& prop);
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95
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96 Cell get_properties (int mode);
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97
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98 std::map<std::string, cdef_property> get_property_map (int mode);
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99
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100 string_vector get_names (void);
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101
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102 void set_directory (const std::string& dir) { directory = dir; }
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103
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104 std::string get_directory (void) const { return directory; }
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105
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106 void delete_object (const cdef_object& obj);
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107
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108 octave_value_list
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109 meta_subsref (const std::string& type,
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110 const std::list<octave_value_list>& idx, int nargout);
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111
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112 void meta_release (void);
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113
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114 bool meta_accepts_postfix_index (char type) const
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115 {
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116 return (type == '(' || type == '.');
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117 }
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118
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119 octave_value get_method (const std::string& name) const;
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120
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121 octave_value construct (const octave_value_list& args);
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122
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123 cdef_object construct_object (const octave_value_list& args);
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124
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125 void initialize_object (cdef_object& obj);
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126
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127 void run_constructor (cdef_object& obj, const octave_value_list& args);
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128
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129 void mark_as_handle_class (void) { handle_class = true; }
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130
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131 bool is_handle_class (void) const { return handle_class; }
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132
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133 octave_idx_type static_count (void) const { return member_count; }
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134
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135 void destroy (void)
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136 {
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137 if (member_count)
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138 {
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139 m_count++;
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140 cdef_class lock (this);
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141
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142 member_count = 0;
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143 method_map.clear ();
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144 property_map.clear ();
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145 }
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146 else
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147 delete this;
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148 }
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149
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150 void mark_as_meta_class (void) { meta = true; }
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151
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152 bool is_meta_class (void) const { return meta; }
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153
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154 private:
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155
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156 void load_all_methods (void);
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157
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158 void find_names (std::set<std::string>& names, bool all);
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159
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160 void find_properties (std::map<std::string,cdef_property>& props,
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161 int mode = 0);
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162
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163 void find_methods (std::map<std::string, cdef_method>& meths,
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164 bool only_inherited, bool include_ctor = false);
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165
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166 cdef_class wrap (void)
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167 {
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168 m_count++;
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169 return cdef_class (this);
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170 }
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171
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172 // The @-directory were this class is loaded from.
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173 // (not used yet)
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174
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175 std::string directory;
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176
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177 // The methods defined by this class.
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178
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179 std::map<std::string,cdef_method> method_map;
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180
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181 // The properties defined by this class.
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182
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183 std::map<std::string,cdef_property> property_map;
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184
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185 // The number of members in this class (methods, properties...)
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186
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187 octave_idx_type member_count;
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188
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189 // TRUE if this class is a handle class. A class is a handle
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190 // class when the abstract "handle" class is one of its superclasses.
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191
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192 bool handle_class;
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193
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194 // The list of super-class constructors that are called implicitly by the
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195 // the classdef engine when creating an object. These constructors are not
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196 // called explicitly by the class constructor.
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197
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198 std::list<cdef_class> implicit_ctor_list;
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199
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200 // TRUE if this class is a built-in meta class.
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201
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202 bool meta;
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203
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204 // Utility iterator typedefs.
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205
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206 typedef std::map<std::string,cdef_method>::iterator method_iterator;
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207 typedef std::map<std::string,cdef_method>::const_iterator method_const_iterator;
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208 typedef std::map<std::string,cdef_property>::iterator property_iterator;
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209 typedef std::map<std::string,cdef_property>::const_iterator property_const_iterator;
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210
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211 cdef_class_rep (const cdef_class_rep& c) = default;
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212 };
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213
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214 public:
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215
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216 // Create an invalid class object.
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217
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218 cdef_class (void) : cdef_meta_object () { }
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219
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220 cdef_class (const std::string& nm, const std::list<cdef_class>& superclasses)
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221 : cdef_meta_object (new cdef_class_rep (superclasses))
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222 {
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223 get_rep ()->set_name (nm);
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224 }
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225
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226 cdef_class (const cdef_class& cls) : cdef_meta_object (cls) { }
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227
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228 cdef_class (const cdef_object& obj)
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229 : cdef_meta_object (obj)
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230 {
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231 // This should never happen...
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232 if (! is_class ())
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233 error ("internal error: invalid assignment from %s to meta.class object",
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234 class_name ().c_str ());
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235 }
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236
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237 cdef_class& operator = (const cdef_class& cls)
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238 {
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239 cdef_object::operator = (cls);
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240
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241 return *this;
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242 }
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243
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244 ~cdef_class (void) = default;
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245
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246 cdef_method find_method (const std::string& nm, bool local = false);
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247
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248 void install_method (const cdef_method& meth)
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249 {
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250 get_rep ()->install_method (meth);
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251 }
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252
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253 Cell get_methods (bool include_ctor = false)
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254 {
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255 return get_rep ()->get_methods (include_ctor);
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256 }
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257
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258 std::map<std::string, cdef_method>
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259 get_method_map (bool only_inherited = false, bool include_ctor = false)
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260 {
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261 return get_rep ()->get_method_map (only_inherited, include_ctor);
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262 }
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263
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264 cdef_property find_property (const std::string& nm);
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265
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266 void install_property (const cdef_property& prop)
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267 {
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268 get_rep ()->install_property (prop);
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269 }
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270
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271 Cell get_properties (int mode = property_normal)
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272 {
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273 return get_rep ()->get_properties (mode);
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274 }
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275
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276 std::map<std::string, cdef_property>
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277 get_property_map (int mode = property_normal)
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278 {
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279 return get_rep ()->get_property_map (mode);
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280 }
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281
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282 string_vector get_names (void) { return get_rep ()->get_names (); }
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283
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284 bool is_abstract (void) const { return get_rep ()->is_abstract (); }
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285
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286 bool is_sealed (void) const { return get_rep ()->is_sealed (); }
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287
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288 void set_directory (const std::string& dir)
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289 {
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290 get_rep ()->set_directory (dir);
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291 }
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292
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293 std::string get_directory (void) const
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294 {
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295 return get_rep ()->get_directory ();
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296 }
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297
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298 std::string get_name (void) const { return get_rep ()->get_name (); }
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299
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300 bool is_builtin (void) const { return get_directory ().empty (); }
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301
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302 void delete_object (const cdef_object& obj)
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303 {
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304 get_rep ()->delete_object (obj);
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305 }
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306
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307 //! Analyze the tree_classdef tree and transform it to a cdef_class
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308 //!
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309 //! <b>All attribute validation should occur here.</b>
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310 //!
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311 //! Classdef attribute values can be given in the form of
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312 //! expressions. These expressions must be evaluated before
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313 //! assigning them as attribute values. Evaluating them as they are
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314 //! parsed causes trouble with possible recusion in the parser so we
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315 //! do it here. For example
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316 //!
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317 //! @code
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318 //! classdef recursion_class
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319 //! methods (Access = ?recursion_class)
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320 //! endmethods
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321 //! endclassdef
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322 //! @endcode
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323 //!
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324 //! will fail because each attempt to compute the metaclass of
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325 //! recursion_class will cause recursion_class to be parsed again.
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326
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327 static cdef_class
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328 make_meta_class (interpreter& interp, tree_classdef *t,
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329 bool is_at_folder = false);
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330
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331 octave_value get_method (const std::string& nm) const
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332 {
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333 return get_rep ()->get_method (nm);
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334 }
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335
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336 octave_value get_method_function (const std::string& nm);
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337
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338 octave_value get_constructor_function (void)
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339 {
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340 return get_method_function (get_name ());
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341 }
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342
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343 octave_value construct (const octave_value_list& args)
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344 {
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345 return get_rep ()->construct (args);
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346 }
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347
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348 cdef_object construct_object (const octave_value_list& args)
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349 {
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350 return get_rep ()->construct_object (args);
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351 }
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352
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353 void initialize_object (cdef_object& obj)
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354 {
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355 get_rep ()->initialize_object (obj);
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356 }
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357
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358 void run_constructor (cdef_object& obj, const octave_value_list& args)
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359 {
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360 get_rep ()->run_constructor (obj, args);
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361 }
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362
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363 void mark_as_handle_class (void)
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364 {
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365 get_rep ()->mark_as_handle_class ();
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366 }
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367
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368 bool is_handle_class (void) const
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369 {
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370 return get_rep ()->is_handle_class ();
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371 }
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372
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373 void mark_as_meta_class (void) { get_rep ()->mark_as_meta_class (); }
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374
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375 bool is_meta_class (void) const { return get_rep ()->is_meta_class (); }
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376
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377 public:
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378
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diff changeset
379 enum
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380 {
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381 property_normal,
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382 property_inherited,
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383 property_all
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384 };
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385
2f847e3e8d6b split classdef into multiple smaller source files
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386 private:
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387
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388 cdef_class_rep * get_rep (void)
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389 {
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390 return dynamic_cast<cdef_class_rep *> (cdef_object::get_rep ());
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391 }
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392
26774
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diff changeset
393 const cdef_class_rep * get_rep (void) const
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394 {
568c2ab2782d move classdef classes inside octave namespace
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395 return dynamic_cast<const cdef_class_rep *> (cdef_object::get_rep ());
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diff changeset
396 }
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2f847e3e8d6b split classdef into multiple smaller source files
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397
26774
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diff changeset
398 friend bool operator == (const cdef_class&, const cdef_class&);
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diff changeset
399 friend bool operator != (const cdef_class&, const cdef_class&);
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400 friend bool operator < (const cdef_class&, const cdef_class&);
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401
26774
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diff changeset
402 friend void install_classdef (interpreter& interp);
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403 };
2f847e3e8d6b split classdef into multiple smaller source files
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diff changeset
404
26774
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diff changeset
405 inline bool
568c2ab2782d move classdef classes inside octave namespace
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406 operator == (const cdef_class& clsa, const cdef_class& clsb)
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diff changeset
407 {
26774
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408 // FIXME: is this really the right way to check class equality?
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409
26774
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diff changeset
410 return (clsa.get_rep () == clsb.get_rep ());
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411 }
26769
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412
26774
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diff changeset
413 inline bool
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diff changeset
414 operator != (const cdef_class& clsa, const cdef_class& clsb)
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diff changeset
415 {
26774
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diff changeset
416 return ! (clsa == clsb);
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417 }
26769
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diff changeset
418
26774
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diff changeset
419 // This is only to be able to use cdef_class as map keys.
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diff changeset
420
26774
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diff changeset
421 inline bool
568c2ab2782d move classdef classes inside octave namespace
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diff changeset
422 operator < (const cdef_class& clsa, const cdef_class& clsb)
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diff changeset
423 {
26774
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diff changeset
424 return clsa.get_rep () < clsb.get_rep ();
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425 }
26769
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diff changeset
426
26774
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diff changeset
427 inline cdef_method
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diff changeset
428 cdef_class::find_method (const std::string& nm, bool local)
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diff changeset
429 {
568c2ab2782d move classdef classes inside octave namespace
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430 return get_rep ()->find_method (nm, local);
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diff changeset
431 }
26769
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432
26774
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diff changeset
433 inline cdef_property
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434 cdef_class::find_property (const std::string& nm)
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diff changeset
435 {
568c2ab2782d move classdef classes inside octave namespace
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diff changeset
436 return get_rep ()->find_property (nm);
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diff changeset
437 }
26773
a95887edd55e style fixes for classdef classes
John W. Eaton <jwe@octave.org>
parents: 26772
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438 }
26769
2f847e3e8d6b split classdef into multiple smaller source files
John W. Eaton <jwe@octave.org>
parents:
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439
2f847e3e8d6b split classdef into multiple smaller source files
John W. Eaton <jwe@octave.org>
parents:
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440 #endif