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annotate libinterp/parse-tree/pt-classdef.cc @ 30564:796f54d4ddbf stable

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update Octave Project Developers copyright for the new year In files that have the "Octave Project Developers" copyright notice, update for 2021. In all .txi and .texi files except gpl.txi and gpl.texi in the doc/liboctave and doc/interpreter directories, change the copyright to "Octave Project Developers", the same as used for other source files. Update copyright notices for 2022 (not done since 2019). For gpl.txi and gpl.texi, change the copyright notice to be "Free Software Foundation, Inc." and leave the date at 2007 only because this file only contains the text of the GPL, not anything created by the Octave Project Developers. Add Paul Thomas to contributors.in.
author John W. Eaton <jwe@octave.org>
date Tue, 28 Dec 2021 18:22:40 -0500
parents d0ce7260978d
children 08b08b7f05b2
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1 ////////////////////////////////////////////////////////////////////////
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2 //
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3 // Copyright (C) 2012-2022 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 (HAVE_CONFIG_H)
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27 # include "config.h"
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28 #endif
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29
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30 #include <iostream>
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31
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32 #include "ov.h"
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33 #include "ov-classdef.h"
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34 #include "pt-args-block.h"
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35 #include "pt-classdef.h"
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36 #include "pt-eval.h"
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37
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38 namespace octave
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39 {
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40 tree_superclass_ref *
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41 tree_superclass_ref::dup (symbol_scope&) const
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42 {
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43 tree_superclass_ref *new_scr
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44 = new tree_superclass_ref (m_method_name, m_class_name,
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45 line (), column ());
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46
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47 new_scr->copy_base (*this);
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48
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49 return new_scr;
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50 }
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51
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52 octave_value_list
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53 tree_superclass_ref::evaluate_n (tree_evaluator& tw, int nargout)
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54 {
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55 octave_value tmp
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56 = octave_classdef::superclass_ref (m_method_name, m_class_name);
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57
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58 if (! is_postfix_indexed ())
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59 {
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60 // There was no index, so this superclass_ref object is not
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61 // part of an index expression. It is also not an identifier in
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62 // the syntax tree but we need to handle it as if it were. So
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63 // call the function here.
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64
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65 octave_function *f = tmp.function_value (true);
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66
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67 assert (f);
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68
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69 return f->call (tw, nargout);
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70 }
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71
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72 // The superclass_ref function object will be indexed as part of the
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73 // enclosing index expression.
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74
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75 return ovl (tmp);
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76 }
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77
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78 tree_metaclass_query *
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79 tree_metaclass_query::dup (symbol_scope&) const
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80 {
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81 tree_metaclass_query *new_mcq
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82 = new tree_metaclass_query (m_class_name, line (), column ());
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83
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84 new_mcq->copy_base (*this);
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85
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86 return new_mcq;
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87 }
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88
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89 octave_value
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90 tree_metaclass_query::evaluate (tree_evaluator&, int)
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91 {
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92 return octave_classdef::metaclass_query (m_class_name);
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93 }
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94
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95 // Classdef attribute
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96
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97 // Classdef attribute_list
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98
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99 tree_classdef_attribute_list::~tree_classdef_attribute_list (void)
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100 {
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101 while (! empty ())
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102 {
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103 auto p = begin ();
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104 delete *p;
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105 erase (p);
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106 }
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107 }
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108
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109 // Classdef superclass
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110
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111 // Classdef superclass_list
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112
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113 tree_classdef_superclass_list::~tree_classdef_superclass_list (void)
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114 {
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115 while (! empty ())
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116 {
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117 auto p = begin ();
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118 delete *p;
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119 erase (p);
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120 }
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121 }
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122
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123 // Classdef property
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124
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125 std::string check_for_doc_string (comment_list *comments)
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126 {
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127 // If the comment list ends in a block comment or full-line comment,
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128 // then it is the doc string for this property.
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129
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130 if (comments)
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131 {
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132 comment_elt last_elt = comments->back ();
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133
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134 if (last_elt.is_block () || last_elt.is_full_line ())
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135 return last_elt.text ();
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136 }
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137
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138 return "";
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139 }
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140
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141 tree_classdef_property::tree_classdef_property (tree_arg_validation *av,
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142 comment_list *comments)
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143 : m_av (av), m_comments (comments),
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144 m_doc_string (check_for_doc_string (m_comments))
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145 { }
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146
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147 tree_classdef_property::~tree_classdef_property (void)
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148 {
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149 delete m_av;
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150 }
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151
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152 tree_identifier * tree_classdef_property::ident (void)
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153 {
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154 tree_expression *id_expr = m_av->identifier_expression ();
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155
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156 return dynamic_cast<tree_identifier *> (id_expr);
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157 }
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158
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159 tree_expression * tree_classdef_property::expression (void)
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160 {
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161 return m_av->initializer_expression ();
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162 }
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163
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164 // Classdef property_list
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165
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166 tree_classdef_property_list::~tree_classdef_property_list (void)
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167 {
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168 while (! empty ())
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169 {
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170 auto p = begin ();
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171 delete *p;
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172 erase (p);
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173 }
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174 }
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175
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176 // Classdef properties_block
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177
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178 // Classdef methods_list
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179
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180 // Classdef methods_block
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181
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182 // Classdef event
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183
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184 tree_classdef_event::tree_classdef_event (tree_identifier *i,
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185 comment_list *comments)
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186 : m_id (i), m_comments (comments),
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187 m_doc_string (check_for_doc_string (m_comments))
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188 { }
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189
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190 // Classdef events_list
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191
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192 tree_classdef_events_list::~tree_classdef_events_list (void)
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193 {
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194 while (! empty ())
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195 {
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196 auto p = begin ();
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197 delete *p;
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198 erase (p);
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199 }
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200 }
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201
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202 // Classdef events_block
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203
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204 // Classdef enum
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205
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206 tree_classdef_enum::tree_classdef_enum (tree_identifier *i,
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207 tree_expression *e,
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208 comment_list *comments)
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209 : m_id (i), m_expr (e), m_comments (comments),
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210 m_doc_string (check_for_doc_string (m_comments))
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211 { }
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212
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213 // Classdef enum_list
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214
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215 tree_classdef_enum_list::~tree_classdef_enum_list (void)
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216 {
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217 while (! empty ())
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218 {
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219 auto p = begin ();
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220 delete *p;
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221 erase (p);
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222 }
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223 }
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224
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225 // Classdef enum_block
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226
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227 // Classdef body
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228
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229 tree_classdef_body::tree_classdef_body (void)
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230 : m_properties_lst (), m_methods_lst (), m_events_lst (), m_enum_lst ()
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231 { }
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232
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233 tree_classdef_body::tree_classdef_body (tree_classdef_properties_block *pb)
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234 : m_properties_lst (), m_methods_lst (), m_events_lst (), m_enum_lst (),
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235 m_doc_string (pb ? get_doc_string (pb->leading_comment ()) : "")
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236 {
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237 append (pb);
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238 }
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239
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240 tree_classdef_body::tree_classdef_body (tree_classdef_methods_block *mb)
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241 : m_properties_lst (), m_methods_lst (), m_events_lst (), m_enum_lst (),
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242 m_doc_string (mb ? get_doc_string (mb->leading_comment ()) : "")
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243 {
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244 append (mb);
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245 }
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246
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247 tree_classdef_body::tree_classdef_body (tree_classdef_events_block *evb)
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248 : m_properties_lst (), m_methods_lst (), m_events_lst (), m_enum_lst (),
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249 m_doc_string (evb ? get_doc_string (evb->leading_comment ()) : "")
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250 {
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251 append (evb);
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252 }
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253
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254 tree_classdef_body::tree_classdef_body (tree_classdef_enum_block *enb)
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255 : m_properties_lst (), m_methods_lst (), m_events_lst (), m_enum_lst (),
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256 m_doc_string (enb ? get_doc_string (enb->leading_comment ()) : "")
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257 {
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258 append (enb);
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259 }
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260
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261 tree_classdef_body::~tree_classdef_body (void)
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262 {
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263 while (! m_properties_lst.empty ())
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264 {
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265 auto p = m_properties_lst.begin ();
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266 delete *p;
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267 m_properties_lst.erase (p);
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268 }
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269
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270 while (! m_methods_lst.empty ())
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271 {
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272 auto p = m_methods_lst.begin ();
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273 delete *p;
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274 m_methods_lst.erase (p);
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275 }
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276
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277 while (! m_events_lst.empty ())
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278 {
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279 auto p = m_events_lst.begin ();
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280 delete *p;
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281 m_events_lst.erase (p);
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282 }
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283
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284 while (! m_enum_lst.empty ())
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285 {
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286 auto p = m_enum_lst.begin ();
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287 delete *p;
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288 m_enum_lst.erase (p);
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289 }
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290 }
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291
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292 std::string
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293 tree_classdef_body::get_doc_string (comment_list *comments) const
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294 {
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295 // Grab the first comment from the list and use it as the doc string
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296 // for this classdef body.
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297
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298 if (comments)
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299 {
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300 comment_elt first_elt = comments->front ();
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301
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302 return first_elt.text ();
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303 }
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304
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305 return "";
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306 }
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307
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308 // Classdef
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309
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310 octave_value
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311 tree_classdef::make_meta_class (interpreter& interp, bool is_at_folder)
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312 {
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313 cdef_class cls = cdef_class::make_meta_class (interp, this, is_at_folder);
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314
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315 if (cls.ok ())
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316 return cls.get_constructor_function ();
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317
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318 return octave_value ();
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319 }
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320 }