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annotate libinterp/octave-value/cdef-class.h @ 27130:396d17dcfb9f

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don't include error.h in ov-base.h * ov-base.h: Don't include error.h. * oct-handle.h, stack-frame.h, cdef-class.h, cdef-object.h, cdef-property.h, nproc.cc, strfind.cc, syminfo.cc: Include error.h in header files that need it.
author John W. Eaton <jwe@octave.org>
date Thu, 30 May 2019 10:23:44 +0000
parents de826e69a5ea
children c98953e85220
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1 /*
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2
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3 Copyright (C) 2012-2019 Michael Goffioul
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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
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9 the Free Software Foundation, either version 3 of the License, or
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10 (at your 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
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13 WITHOUT ANY WARRANTY; without even the implied warranty of
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14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 GNU General Public License 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 <https://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_cdef_class_h)
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24 #define octave_cdef_class_h 1
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25
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26 #include "octave-config.h"
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27
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28 #include <map>
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29 #include <set>
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30 #include <string>
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31
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32 #include "oct-refcount.h"
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33
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34 #include "cdef-method.h"
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35 #include "cdef-object.h"
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36 #include "cdef-package.h"
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37 #include "cdef-property.h"
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38 #include "error.h"
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39 #include "ov.h"
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40 #include "ovl.h"
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41
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42 namespace octave
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43 {
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44 class interpreter;
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45 class tree_classdef;
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46
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47 class
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48 cdef_class : public cdef_meta_object
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49 {
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50 private:
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51
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52 class
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53 cdef_class_rep : public cdef_meta_object_rep
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54 {
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55 public:
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56 cdef_class_rep (void)
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57 : cdef_meta_object_rep (), member_count (0), handle_class (false),
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58 object_count (0), meta (false)
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59 { }
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60
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61 cdef_class_rep (const std::list<cdef_class>& superclasses);
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62
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63 cdef_class_rep& operator = (const cdef_class_rep&) = delete;
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64
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65 ~cdef_class_rep (void) = default;
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66
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67 cdef_object_rep * copy (void) const { return new cdef_class_rep (*this); }
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68
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69 bool is_class (void) const { return true; }
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70
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71 std::string get_name (void) const
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72 { return get ("Name").string_value (); }
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73
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74 void set_name (const std::string& nm) { put ("Name", nm); }
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75
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76 bool is_abstract (void) const { return get ("Abstract").bool_value (); }
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77
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78 bool is_sealed (void) const { return get ("Sealed").bool_value (); }
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79
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80 cdef_method find_method (const std::string& nm, bool local = false);
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81
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82 void install_method (const cdef_method& meth);
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83
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84 Cell get_methods (bool include_ctor);
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85
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86 std::map<std::string, cdef_method>
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87 get_method_map (bool only_inherited, bool include_ctor);
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88
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89 cdef_property find_property (const std::string& nm);
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90
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91 void install_property (const cdef_property& prop);
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92
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93 Cell get_properties (int mode);
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94
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95 std::map<std::string, cdef_property> get_property_map (int mode);
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96
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97 string_vector get_names (void);
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98
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99 void set_directory (const std::string& dir) { directory = dir; }
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100
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101 std::string get_directory (void) const { return directory; }
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102
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103 void delete_object (const cdef_object& obj);
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104
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105 octave_value_list
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106 meta_subsref (const std::string& type,
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107 const std::list<octave_value_list>& idx, int nargout);
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108
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109 void meta_release (void);
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110
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111 bool meta_accepts_postfix_index (char type) const
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112 {
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113 return (type == '(' || type == '.');
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114 }
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115
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116 octave_value get_method (const std::string& name) const;
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117
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118 octave_value construct (const octave_value_list& args);
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119
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120 cdef_object construct_object (const octave_value_list& args);
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121
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122 void initialize_object (cdef_object& obj);
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123
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124 void run_constructor (cdef_object& obj, const octave_value_list& args);
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125
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126 void mark_as_handle_class (void) { handle_class = true; }
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127
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128 bool is_handle_class (void) const { return handle_class; }
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129
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130 void register_object (void) { object_count++; }
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131
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132 void unregister_object (void) { object_count--; }
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133
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134 octave_idx_type static_count (void) const { return member_count; }
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135
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136 void destroy (void)
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137 {
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138 if (member_count)
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139 {
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140 m_count++;
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141 cdef_class lock (this);
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142
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143 member_count = 0;
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144 method_map.clear ();
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145 property_map.clear ();
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146 }
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147 else
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148 delete this;
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149 }
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150
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151 void mark_as_meta_class (void) { meta = true; }
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152
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153 bool is_meta_class (void) const { return meta; }
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154
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155 private:
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156
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157 void load_all_methods (void);
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158
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159 void find_names (std::set<std::string>& names, bool all);
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160
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161 void find_properties (std::map<std::string,cdef_property>& props,
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162 int mode = 0);
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163
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164 void find_methods (std::map<std::string, cdef_method>& meths,
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165 bool only_inherited, bool include_ctor = false);
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166
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167 cdef_class wrap (void)
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168 {
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169 m_count++;
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170 return cdef_class (this);
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171 }
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172
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173 // The @-directory were this class is loaded from.
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174 // (not used yet)
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175
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176 std::string directory;
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177
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178 // The methods defined by this class.
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179
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180 std::map<std::string,cdef_method> method_map;
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181
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182 // The properties defined by this class.
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183
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184 std::map<std::string,cdef_property> property_map;
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185
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186 // The number of members in this class (methods, properties...)
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187
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188 octave_idx_type member_count;
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189
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190 // TRUE if this class is a handle class. A class is a handle
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191 // class when the abstract "handle" class is one of its superclasses.
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192
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193 bool handle_class;
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194
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195 // The list of super-class constructors that are called implicitly by the
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196 // the classdef engine when creating an object. These constructors are not
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197 // called explicitly by the class constructor.
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198
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199 std::list<cdef_class> implicit_ctor_list;
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200
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201 // The number of objects of this class.
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202
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203 refcount<octave_idx_type> object_count;
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204
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205 // TRUE if this class is a built-in meta class.
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206
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207 bool meta;
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208
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209 // Utility iterator typedefs.
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210
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211 typedef std::map<std::string,cdef_method>::iterator method_iterator;
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212 typedef std::map<std::string,cdef_method>::const_iterator method_const_iterator;
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213 typedef std::map<std::string,cdef_property>::iterator property_iterator;
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214 typedef std::map<std::string,cdef_property>::const_iterator property_const_iterator;
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215
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216 cdef_class_rep (const cdef_class_rep& c)
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217 : cdef_meta_object_rep (c), directory (c.directory),
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218 method_map (c.method_map), property_map (c.property_map),
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219 member_count (c.member_count), handle_class (c.handle_class),
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220 implicit_ctor_list (c.implicit_ctor_list),
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221 object_count (c.object_count), meta (c.meta) { }
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222 };
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223
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224 public:
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225
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226 // Create an invalid class object.
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227
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228 cdef_class (void) : cdef_meta_object () { }
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229
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230 cdef_class (const std::string& nm, const std::list<cdef_class>& superclasses)
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231 : cdef_meta_object (new cdef_class_rep (superclasses))
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232 {
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233 get_rep ()->set_name (nm);
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234 }
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235
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236 cdef_class (const cdef_class& cls) : cdef_meta_object (cls) { }
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237
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238 cdef_class (const cdef_object& obj)
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239 : cdef_meta_object (obj)
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240 {
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241 // This should never happen...
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242 if (! is_class ())
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243 error ("internal error: invalid assignment from %s to meta.class object",
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244 class_name ().c_str ());
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245 }
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246
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247 cdef_class& operator = (const cdef_class& cls)
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248 {
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249 cdef_object::operator = (cls);
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250
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251 return *this;
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252 }
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253
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254 ~cdef_class (void) = default;
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255
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256 cdef_method find_method (const std::string& nm, bool local = false);
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257
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258 void install_method (const cdef_method& meth)
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259 {
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260 get_rep ()->install_method (meth);
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261 }
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262
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263 Cell get_methods (bool include_ctor = false)
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264 {
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265 return get_rep ()->get_methods (include_ctor);
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266 }
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267
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268 std::map<std::string, cdef_method>
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269 get_method_map (bool only_inherited = false, bool include_ctor = false)
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270 {
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271 return get_rep ()->get_method_map (only_inherited, include_ctor);
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272 }
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273
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274 cdef_property find_property (const std::string& nm);
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275
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276 void install_property (const cdef_property& prop)
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277 {
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278 get_rep ()->install_property (prop);
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279 }
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280
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281 Cell get_properties (int mode = property_normal)
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282 {
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283 return get_rep ()->get_properties (mode);
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284 }
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285
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286 std::map<std::string, cdef_property>
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287 get_property_map (int mode = property_normal)
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288 {
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289 return get_rep ()->get_property_map (mode);
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290 }
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291
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292 string_vector get_names (void) { return get_rep ()->get_names (); }
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293
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294 bool is_abstract (void) const { return get_rep ()->is_abstract (); }
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295
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296 bool is_sealed (void) const { return get_rep ()->is_sealed (); }
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297
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298 void set_directory (const std::string& dir)
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299 {
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300 get_rep ()->set_directory (dir);
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301 }
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302
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303 std::string get_directory (void) const
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304 {
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305 return get_rep ()->get_directory ();
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306 }
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307
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308 std::string get_name (void) const { return get_rep ()->get_name (); }
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309
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310 bool is_builtin (void) const { return get_directory ().empty (); }
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311
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312 void delete_object (const cdef_object& obj)
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313 {
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314 get_rep ()->delete_object (obj);
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315 }
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316
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317 //! Analyze the tree_classdef tree and transform it to a cdef_class
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318 //!
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319 //! <b>All attribute validation should occur here.</b>
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320 //!
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321 //! Classdef attribute values can be given in the form of
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322 //! expressions. These expressions must be evaluated before
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323 //! assigning them as attribute values. Evaluating them as they are
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324 //! parsed causes trouble with possible recusion in the parser so we
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325 //! do it here. For example
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326 //!
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327 //! @code
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328 //! classdef recursion_class
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329 //! methods (Access = ?recursion_class)
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330 //! endmethods
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331 //! endclassdef
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332 //! @endcode
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333 //!
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334 //! will fail because each attempt to compute the metaclass of
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335 //! recursion_class will cause recursion_class to be parsed again.
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336
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337 static cdef_class
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338 make_meta_class (interpreter& interp, tree_classdef *t,
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339 bool is_at_folder = false);
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340
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341 octave_value get_method (const std::string& nm) const
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342 {
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343 return get_rep ()->get_method (nm);
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344 }
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345
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346 octave_function * get_method_function (const std::string& nm);
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347
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348 octave_function * get_constructor_function (void)
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349 {
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350 return get_method_function (get_name ());
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351 }
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352
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353 octave_value construct (const octave_value_list& args)
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354 {
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355 return get_rep ()->construct (args);
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356 }
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357
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358 cdef_object construct_object (const octave_value_list& args)
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359 {
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360 return get_rep ()->construct_object (args);
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361 }
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362
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363 void initialize_object (cdef_object& obj)
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364 {
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365 get_rep ()->initialize_object (obj);
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366 }
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367
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368 void run_constructor (cdef_object& obj, const octave_value_list& args)
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369 {
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370 get_rep ()->run_constructor (obj, args);
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371 }
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372
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373 void mark_as_handle_class (void)
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374 {
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375 get_rep ()->mark_as_handle_class ();
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376 }
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377
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378 bool is_handle_class (void) const
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379 {
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380 return get_rep ()->is_handle_class ();
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381 }
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382
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383 void mark_as_meta_class (void) { get_rep ()->mark_as_meta_class (); }
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384
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385 bool is_meta_class (void) const { return get_rep ()->is_meta_class (); }
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386
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387 void register_object (void) { get_rep ()->register_object (); }
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388
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389 void unregister_object (void) { get_rep ()->unregister_object (); }
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390
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diff changeset
391 public:
568c2ab2782d move classdef classes inside octave namespace
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392
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diff changeset
393 enum
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394 {
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395 property_normal,
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diff changeset
396 property_inherited,
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397 property_all
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398 };
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399
2f847e3e8d6b split classdef into multiple smaller source files
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400 private:
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401
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402 cdef_class_rep * get_rep (void)
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403 {
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diff changeset
404 return dynamic_cast<cdef_class_rep *> (cdef_object::get_rep ());
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405 }
2f847e3e8d6b split classdef into multiple smaller source files
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diff changeset
406
26774
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diff changeset
407 const cdef_class_rep * get_rep (void) const
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diff changeset
408 {
568c2ab2782d move classdef classes inside octave namespace
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diff changeset
409 return dynamic_cast<const cdef_class_rep *> (cdef_object::get_rep ());
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diff changeset
410 }
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411
26774
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diff changeset
412 friend bool operator == (const cdef_class&, const cdef_class&);
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diff changeset
413 friend bool operator != (const cdef_class&, const cdef_class&);
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414 friend bool operator < (const cdef_class&, const cdef_class&);
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415
26774
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diff changeset
416 friend void install_classdef (interpreter& interp);
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417 };
2f847e3e8d6b split classdef into multiple smaller source files
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diff changeset
418
26774
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diff changeset
419 inline bool
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diff changeset
420 operator == (const cdef_class& clsa, const cdef_class& clsb)
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421 {
26774
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diff changeset
422 // FIXME: is this really the right way to check class equality?
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423
26774
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diff changeset
424 return (clsa.get_rep () == clsb.get_rep ());
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425 }
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426
26774
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diff changeset
427 inline bool
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diff changeset
428 operator != (const cdef_class& clsa, const cdef_class& clsb)
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diff changeset
429 {
26774
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diff changeset
430 return ! (clsa == clsb);
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diff changeset
431 }
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432
26774
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diff changeset
433 // This is only to be able to use cdef_class as map keys.
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diff changeset
434
26774
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diff changeset
435 inline bool
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diff changeset
436 operator < (const cdef_class& clsa, const cdef_class& clsb)
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diff changeset
437 {
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438 return clsa.get_rep () < clsb.get_rep ();
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439 }
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440
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441 inline cdef_method
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442 cdef_class::find_method (const std::string& nm, bool local)
568c2ab2782d move classdef classes inside octave namespace
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443 {
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444 return get_rep ()->find_method (nm, local);
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445 }
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446
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447 inline cdef_property
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448 cdef_class::find_property (const std::string& nm)
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449 {
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450 return get_rep ()->find_property (nm);
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451 }
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452 }
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453
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454 #endif