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annotate libinterp/octave-value/cdef-utils.cc @ 27216:823b4bcf79fc

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unless necessary for formatting or code, use ' instead of ` Files affected: doc/interpreter/TODO, etc/HACKING.md, examples/code/oregonator.cc, examples/code/oregonator.m, libgui/graphics/ObjectFactory.cc, libinterp/corefcn/defun-dld.h, libinterp/corefcn/defun.h, libinterp/corefcn/graphics.cc, libinterp/corefcn/ls-hdf5.cc, libinterp/corefcn/oct-stream.cc, libinterp/octave-value/cdef-class.cc, libinterp/octave-value/cdef-manager.cc, libinterp/octave-value/cdef-method.cc, libinterp/octave-value/cdef-object.cc, libinterp/octave-value/cdef-package.cc, libinterp/octave-value/cdef-property.cc, libinterp/octave-value/cdef-utils.cc, libinterp/octave-value/ov-classdef.cc, libinterp/octave-value/ov-java.cc, libinterp/octave-value/ov.h, libinterp/parse-tree/oct-parse.yy, liboctave/array/Array.h, liboctave/numeric/bsxfun.h, liboctave/util/oct-rl-hist.c, scripts/help/__unimplemented__.m, scripts/image/imformats.m, scripts/image/imwrite.m, scripts/image/private/__imread__.m, scripts/image/private/__imwrite__.m, scripts/java/org/octave/Matrix.java, scripts/linear-algebra/condeig.m, scripts/miscellaneous/inputParser.m, scripts/miscellaneous/publish.m, scripts/pkg/private/configure_make.m, scripts/special-matrix/gallery.m, scripts/web/weboptions.m, test/classdef/classdef.tst.
author John W. Eaton <jwe@octave.org>
date Wed, 26 Jun 2019 15:47:03 -0400
parents 5b40cf4896f0
children b442ec6dda5c
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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 (HAVE_CONFIG_H)
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24 # include "config.h"
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25 #endif
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26
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27 #include "cdef-class.h"
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28 #include "cdef-manager.h"
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29 #include "cdef-method.h"
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30 #include "cdef-package.h"
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31 #include "cdef-property.h"
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32 #include "cdef-utils.h"
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33 #include "interpreter-private.h"
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34 #include "ov-classdef.h"
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35 #include "ov-usr-fcn.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 std::string
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41 get_base_name (const std::string& nm)
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42 {
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43 std::string::size_type pos = nm.find_last_of ('.');
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44
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45 if (pos != std::string::npos)
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46 return nm.substr (pos + 1);
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47
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48 return nm;
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49 }
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50
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51 void
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52 make_function_of_class (const std::string& class_name,
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53 const octave_value& fcn)
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54 {
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55 octave_function *of = fcn.function_value ();
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56
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57 of->stash_dispatch_class (class_name);
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58
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59 octave_user_function *uf = of->user_function_value (true);
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60
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61 if (uf)
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62 {
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63 if (get_base_name (class_name) == uf->name ())
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64 uf->mark_as_classdef_constructor ();
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65 else
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66 uf->mark_as_classdef_method ();
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67 }
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68 }
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69
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70 void
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71 make_function_of_class (const cdef_class& cls, const octave_value& fcn)
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72 {
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73 make_function_of_class (cls.get_name (), fcn);
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74 }
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75
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76 cdef_class
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77 lookup_class (const std::string& name, bool error_if_not_found,
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78 bool load_if_not_found)
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79 {
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80 cdef_manager& cdm = __get_cdef_manager__ ("lookup_class");
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81
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82 return cdm.find_class (name, error_if_not_found, load_if_not_found);
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83 }
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84
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85 cdef_class
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86 lookup_class (const cdef_class& cls)
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87 {
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88 // FIXME: placeholder for the time being, the purpose
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89 // is to centralized any class update activity here.
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90
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91 return cls;
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92 }
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93
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94 cdef_class
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95 lookup_class (const octave_value& ov)
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96 {
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97 if (ov.is_string())
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98 return lookup_class (ov.string_value ());
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99 else
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100 {
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101 cdef_class cls (to_cdef (ov));
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102
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103 return lookup_class (cls);
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104 }
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105
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106 return cdef_class ();
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107 }
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108
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109 std::list<cdef_class>
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110 lookup_classes (const Cell& cls_list)
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111 {
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112 std::list<cdef_class> retval;
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113
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114 for (int i = 0; i < cls_list.numel (); i++)
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115 {
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116 cdef_class c = lookup_class (cls_list(i));
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117
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118 retval.push_back (c);
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119 }
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120
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121 return retval;
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122 }
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123
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124 octave_value
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125 to_ov (const cdef_object& obj)
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126 {
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127 if (obj.ok ())
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128 return octave_value (new octave_classdef (obj));
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129 else
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130 return octave_value (Matrix ());
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131 }
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132
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133 octave_value
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134 to_ov (const octave_value& ov)
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135 {
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136 return ov;
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137 }
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138
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139 cdef_object
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140 to_cdef (const octave_value& val)
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141 {
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142 if (val.type_name () != "object")
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143 error ("cannot convert '%s' into 'object'", val.type_name().c_str ());
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144
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145 return dynamic_cast<octave_classdef *> (val.internal_rep ())->get_object ();
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146 }
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147
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148 cdef_object&
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149 to_cdef_ref (const octave_value& val)
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150 {
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151 if (val.type_name () != "object")
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152 error ("cannot convert '%s' into 'object'", val.type_name().c_str ());
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153
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154 return dynamic_cast<octave_classdef *> (val.internal_rep ())->get_object_ref ();
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155 }
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156
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157 cdef_object
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158 to_cdef (const cdef_object& obj)
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159 {
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160 return obj;
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161 }
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162
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163 octave_value
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164 to_ov (const std::list<cdef_class>& class_list)
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165 {
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166 Cell cls (class_list.size (), 1);
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167 int i = 0;
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168
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169 for (const auto& cdef_cls : class_list)
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170 cls(i++) = to_ov (cdef_cls);
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171
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172 return octave_value (cls);
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173 }
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174
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175 bool
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176 is_dummy_method (const octave_value& fcn)
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177 {
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178 bool retval = false;
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179
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180 if (fcn.is_defined ())
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181 {
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182 if (fcn.is_user_function ())
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183 {
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184 octave_user_function *uf = fcn.user_function_value (true);
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185
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186 if (! uf || ! uf->body ())
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187 retval = true;
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188 }
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189 }
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190 else
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191 retval = true;
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192
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193 return retval;
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194 }
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195
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196 bool
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197 is_superclass (const cdef_class& clsa, const cdef_class& clsb,
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198 bool allow_equal, int max_depth)
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199 {
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200 bool retval = false;
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201
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202 if (allow_equal && clsa == clsb)
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203 retval = true;
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204 else if (max_depth != 0)
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205 {
568c2ab2782d move classdef classes inside octave namespace
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206 Cell c = clsb.get ("SuperClasses").cell_value ();
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207
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208 for (int i = 0; ! retval && i < c.numel (); i++)
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209 {
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210 cdef_class cls = lookup_class (c(i));
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211
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212 retval = is_superclass (clsa, cls, true,
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213 max_depth < 0 ? max_depth : max_depth-1);
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214 }
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215 }
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216
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217 return retval;
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218 }
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219
26774
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220 bool
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221 is_strict_superclass (const cdef_class& clsa, const cdef_class& clsb)
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222 {
568c2ab2782d move classdef classes inside octave namespace
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223 return is_superclass (clsa, clsb, false);
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224 }
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225
26774
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226 bool
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227 is_direct_superclass (const cdef_class& clsa, const cdef_class& clsb)
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228 {
568c2ab2782d move classdef classes inside octave namespace
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229 return is_superclass (clsa, clsb, false, 1);
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230 }
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231
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232 cdef_package
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diff changeset
233 lookup_package (const std::string& name, bool error_if_not_found,
568c2ab2782d move classdef classes inside octave namespace
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234 bool load_if_not_found)
568c2ab2782d move classdef classes inside octave namespace
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235 {
568c2ab2782d move classdef classes inside octave namespace
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diff changeset
236 cdef_manager& cdm = __get_cdef_manager__ ("lookup_package");
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237
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238 return cdm.find_package (name, error_if_not_found, load_if_not_found);
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239 }
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240
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241 cdef_class
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242 get_class_context (std::string& name, bool& in_constructor)
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243 {
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244 name = "";
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245 in_constructor = false;
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246
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247 cdef_class cls;
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248
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249 // If the dispatch class is set in the current stack frame it
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250 // overrides whatever dispatch class there is for the currently
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251 // executing function so that function handles returned from class
392b14b0c085 override dispatch class for function handles (bug #45351)
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252 // methods will use the dispatch class of the class in which they
392b14b0c085 override dispatch class for function handles (bug #45351)
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253 // are defined instead of the class in which they are executing.
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diff changeset
254
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diff changeset
255 tree_evaluator& tw = __get_evaluator__ ("get_class_context");
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diff changeset
256
27208
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diff changeset
257 std::string dispatch_class = tw.get_dispatch_class ();
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diff changeset
258
26967
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diff changeset
259 if (! dispatch_class.empty ())
392b14b0c085 override dispatch class for function handles (bug #45351)
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diff changeset
260 return lookup_class (dispatch_class);
392b14b0c085 override dispatch class for function handles (bug #45351)
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diff changeset
261
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diff changeset
262 octave_function *fcn = tw.current_function ();
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diff changeset
263
26774
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diff changeset
264 if (fcn && (fcn->is_class_method ()
568c2ab2782d move classdef classes inside octave namespace
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diff changeset
265 || fcn->is_classdef_constructor ()
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diff changeset
266 || fcn->is_anonymous_function_of_class ()
568c2ab2782d move classdef classes inside octave namespace
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diff changeset
267 || (fcn->is_private_function ()
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diff changeset
268 && ! fcn->dispatch_class ().empty ())))
568c2ab2782d move classdef classes inside octave namespace
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diff changeset
269 {
568c2ab2782d move classdef classes inside octave namespace
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270 cls = lookup_class (fcn->dispatch_class ());
26772
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271
26774
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272 name = fcn->name ();
568c2ab2782d move classdef classes inside octave namespace
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273 in_constructor = fcn->is_classdef_constructor ();
568c2ab2782d move classdef classes inside octave namespace
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274 }
568c2ab2782d move classdef classes inside octave namespace
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275
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276 return cls;
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diff changeset
277 }
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278
26774
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diff changeset
279 cdef_class
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diff changeset
280 get_class_context (void)
568c2ab2782d move classdef classes inside octave namespace
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diff changeset
281 {
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diff changeset
282 std::string dummy_string;
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diff changeset
283 bool dummy_bool;
26772
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284
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285 return get_class_context (dummy_string, dummy_bool);
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286 }
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287
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288 bool
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289 check_access (const cdef_class& cls, const octave_value& acc,
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290 const std::string& meth_name, const std::string& prop_name,
568c2ab2782d move classdef classes inside octave namespace
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291 bool is_prop_set)
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292 {
568c2ab2782d move classdef classes inside octave namespace
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293 if (acc.is_string ())
568c2ab2782d move classdef classes inside octave namespace
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294 {
568c2ab2782d move classdef classes inside octave namespace
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295 std::string acc_s = acc.string_value ();
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296
568c2ab2782d move classdef classes inside octave namespace
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297 if (acc_s == "public")
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298 return true;
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299
568c2ab2782d move classdef classes inside octave namespace
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300 cdef_class ctx = get_class_context ();
568c2ab2782d move classdef classes inside octave namespace
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301
568c2ab2782d move classdef classes inside octave namespace
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302 // The access is private or protected, this requires a
568c2ab2782d move classdef classes inside octave namespace
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303 // valid class context.
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304
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305 if (ctx.ok ())
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306 {
568c2ab2782d move classdef classes inside octave namespace
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parents: 26772
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307 if (acc_s == "private")
568c2ab2782d move classdef classes inside octave namespace
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308 return (ctx == cls);
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309 else if (acc_s == "protected")
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310 {
568c2ab2782d move classdef classes inside octave namespace
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311 if (is_superclass (cls, ctx))
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312 // Calling a protected method in a superclass.
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313 return true;
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314 else if (is_strict_superclass (ctx, cls))
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315 {
568c2ab2782d move classdef classes inside octave namespace
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316 // Calling a protected method or property in a derived class.
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317 // This is only allowed if the context class knows about it
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318 // and has access to it.
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319
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320 if (! meth_name.empty ())
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321 {
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322 cdef_method m = ctx.find_method (meth_name);
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323
26774
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324 if (m.ok ())
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325 return check_access (ctx, m.get ("Access"), meth_name);
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326
26774
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327 return false;
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328 }
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329 else if (! prop_name.empty ())
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330 {
568c2ab2782d move classdef classes inside octave namespace
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331 cdef_property p = ctx.find_property (prop_name);
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332
26774
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333 if (p.ok ())
568c2ab2782d move classdef classes inside octave namespace
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334 {
568c2ab2782d move classdef classes inside octave namespace
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335 octave_value p_access = p.get (is_prop_set ?
568c2ab2782d move classdef classes inside octave namespace
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336 "SetAccess" :
568c2ab2782d move classdef classes inside octave namespace
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337 "GetAccess");
568c2ab2782d move classdef classes inside octave namespace
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338
568c2ab2782d move classdef classes inside octave namespace
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339 return check_access (ctx, p_access, meth_name,
568c2ab2782d move classdef classes inside octave namespace
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340 prop_name, is_prop_set);
568c2ab2782d move classdef classes inside octave namespace
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341 }
568c2ab2782d move classdef classes inside octave namespace
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342
568c2ab2782d move classdef classes inside octave namespace
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343 return false;
568c2ab2782d move classdef classes inside octave namespace
John W. Eaton <jwe@octave.org>
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diff changeset
344 }
568c2ab2782d move classdef classes inside octave namespace
John W. Eaton <jwe@octave.org>
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diff changeset
345 else
568c2ab2782d move classdef classes inside octave namespace
John W. Eaton <jwe@octave.org>
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diff changeset
346 panic_impossible ();
568c2ab2782d move classdef classes inside octave namespace
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diff changeset
347 }
26772
d1419ac09564 split method, package, and property classes from cdef-class file
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diff changeset
348
26774
568c2ab2782d move classdef classes inside octave namespace
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diff changeset
349 return false;
568c2ab2782d move classdef classes inside octave namespace
John W. Eaton <jwe@octave.org>
parents: 26772
diff changeset
350 }
568c2ab2782d move classdef classes inside octave namespace
John W. Eaton <jwe@octave.org>
parents: 26772
diff changeset
351 else
568c2ab2782d move classdef classes inside octave namespace
John W. Eaton <jwe@octave.org>
parents: 26772
diff changeset
352 panic_impossible ();
568c2ab2782d move classdef classes inside octave namespace
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parents: 26772
diff changeset
353 }
568c2ab2782d move classdef classes inside octave namespace
John W. Eaton <jwe@octave.org>
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diff changeset
354 }
568c2ab2782d move classdef classes inside octave namespace
John W. Eaton <jwe@octave.org>
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diff changeset
355 else if (acc.isobject ())
568c2ab2782d move classdef classes inside octave namespace
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diff changeset
356 {
568c2ab2782d move classdef classes inside octave namespace
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diff changeset
357 cdef_class ctx = get_class_context ();
26772
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358
26774
568c2ab2782d move classdef classes inside octave namespace
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diff changeset
359 // At this point, a class context is always required.
568c2ab2782d move classdef classes inside octave namespace
John W. Eaton <jwe@octave.org>
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diff changeset
360 if (ctx.ok ())
568c2ab2782d move classdef classes inside octave namespace
John W. Eaton <jwe@octave.org>
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diff changeset
361 {
568c2ab2782d move classdef classes inside octave namespace
John W. Eaton <jwe@octave.org>
parents: 26772
diff changeset
362 if (ctx == cls)
568c2ab2782d move classdef classes inside octave namespace
John W. Eaton <jwe@octave.org>
parents: 26772
diff changeset
363 return true;
568c2ab2782d move classdef classes inside octave namespace
John W. Eaton <jwe@octave.org>
parents: 26772
diff changeset
364
568c2ab2782d move classdef classes inside octave namespace
John W. Eaton <jwe@octave.org>
parents: 26772
diff changeset
365 cdef_class acc_cls (to_cdef (acc));
26772
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diff changeset
366
26774
568c2ab2782d move classdef classes inside octave namespace
John W. Eaton <jwe@octave.org>
parents: 26772
diff changeset
367 if (is_superclass (acc_cls, ctx))
568c2ab2782d move classdef classes inside octave namespace
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diff changeset
368 return true;
568c2ab2782d move classdef classes inside octave namespace
John W. Eaton <jwe@octave.org>
parents: 26772
diff changeset
369 }
568c2ab2782d move classdef classes inside octave namespace
John W. Eaton <jwe@octave.org>
parents: 26772
diff changeset
370 }
568c2ab2782d move classdef classes inside octave namespace
John W. Eaton <jwe@octave.org>
parents: 26772
diff changeset
371 else if (acc.iscell ())
568c2ab2782d move classdef classes inside octave namespace
John W. Eaton <jwe@octave.org>
parents: 26772
diff changeset
372 {
568c2ab2782d move classdef classes inside octave namespace
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parents: 26772
diff changeset
373 Cell acc_c = acc.cell_value ();
26772
d1419ac09564 split method, package, and property classes from cdef-class file
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parents: 26769
diff changeset
374
26774
568c2ab2782d move classdef classes inside octave namespace
John W. Eaton <jwe@octave.org>
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diff changeset
375 cdef_class ctx = get_class_context ();
568c2ab2782d move classdef classes inside octave namespace
John W. Eaton <jwe@octave.org>
parents: 26772
diff changeset
376
568c2ab2782d move classdef classes inside octave namespace
John W. Eaton <jwe@octave.org>
parents: 26772
diff changeset
377 // At this point, a class context is always required.
26772
d1419ac09564 split method, package, and property classes from cdef-class file
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parents: 26769
diff changeset
378
26774
568c2ab2782d move classdef classes inside octave namespace
John W. Eaton <jwe@octave.org>
parents: 26772
diff changeset
379 if (ctx.ok ())
568c2ab2782d move classdef classes inside octave namespace
John W. Eaton <jwe@octave.org>
parents: 26772
diff changeset
380 {
568c2ab2782d move classdef classes inside octave namespace
John W. Eaton <jwe@octave.org>
parents: 26772
diff changeset
381 if (ctx == cls)
568c2ab2782d move classdef classes inside octave namespace
John W. Eaton <jwe@octave.org>
parents: 26772
diff changeset
382 return true;
568c2ab2782d move classdef classes inside octave namespace
John W. Eaton <jwe@octave.org>
parents: 26772
diff changeset
383
568c2ab2782d move classdef classes inside octave namespace
John W. Eaton <jwe@octave.org>
parents: 26772
diff changeset
384 for (int i = 0; i < acc.numel (); i++)
568c2ab2782d move classdef classes inside octave namespace
John W. Eaton <jwe@octave.org>
parents: 26772
diff changeset
385 {
568c2ab2782d move classdef classes inside octave namespace
John W. Eaton <jwe@octave.org>
parents: 26772
diff changeset
386 cdef_class acc_cls (to_cdef (acc_c(i)));
26772
d1419ac09564 split method, package, and property classes from cdef-class file
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parents: 26769
diff changeset
387
26774
568c2ab2782d move classdef classes inside octave namespace
John W. Eaton <jwe@octave.org>
parents: 26772
diff changeset
388 if (is_superclass (acc_cls, ctx))
568c2ab2782d move classdef classes inside octave namespace
John W. Eaton <jwe@octave.org>
parents: 26772
diff changeset
389 return true;
568c2ab2782d move classdef classes inside octave namespace
John W. Eaton <jwe@octave.org>
parents: 26772
diff changeset
390 }
568c2ab2782d move classdef classes inside octave namespace
John W. Eaton <jwe@octave.org>
parents: 26772
diff changeset
391 }
568c2ab2782d move classdef classes inside octave namespace
John W. Eaton <jwe@octave.org>
parents: 26772
diff changeset
392 }
568c2ab2782d move classdef classes inside octave namespace
John W. Eaton <jwe@octave.org>
parents: 26772
diff changeset
393 else
27216
823b4bcf79fc unless necessary for formatting or code, use ' instead of `
John W. Eaton <jwe@octave.org>
parents: 27208
diff changeset
394 error ("invalid property/method access in class '%s'",
26774
568c2ab2782d move classdef classes inside octave namespace
John W. Eaton <jwe@octave.org>
parents: 26772
diff changeset
395 cls.get_name ().c_str ());
26772
d1419ac09564 split method, package, and property classes from cdef-class file
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diff changeset
396
26774
568c2ab2782d move classdef classes inside octave namespace
John W. Eaton <jwe@octave.org>
parents: 26772
diff changeset
397 return false;
568c2ab2782d move classdef classes inside octave namespace
John W. Eaton <jwe@octave.org>
parents: 26772
diff changeset
398 }
26772
d1419ac09564 split method, package, and property classes from cdef-class file
John W. Eaton <jwe@octave.org>
parents: 26769
diff changeset
399 }