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annotate libinterp/octave-value/cdef-method.cc @ 33657:6f2baadfdb3d bytecode-interpreter tip

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maint: Merge default to bytecode-interpreter.
author Nicholas R. Jankowski <jankowski.nicholas@gmail.com>
date Tue, 04 Jun 2024 20:06:05 -0400
parents 2e484f9f1f18
children
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1 ////////////////////////////////////////////////////////////////////////
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2 //
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3 // Copyright (C) 2012-2024 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 <algorithm>
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31 #include <iomanip>
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32
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33 #include "cdef-class.h"
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34 #include "cdef-manager.h"
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35 #include "cdef-utils.h"
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36 #include "errwarn.h"
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37 #include "interpreter-private.h"
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38 #include "interpreter.h"
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39 #include "load-path.h"
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40 #include "ov-builtin.h"
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41 #include "ov-classdef.h"
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42 #include "ov-fcn-handle.h"
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43 #include "ov-usr-fcn.h"
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44 #include "parse.h"
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45 #include "pt-assign.h"
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46 #include "pt-classdef.h"
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47 #include "pt-idx.h"
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48 #include "pt-misc.h"
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49 #include "pt-stmt.h"
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50 #include "pt-walk.h"
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51
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52 OCTAVE_BEGIN_NAMESPACE(octave)
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53
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54 OCTAVE_NORETURN static
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55 void
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56 err_method_access (const std::string& from, const cdef_method& meth)
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57 {
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58 octave_value acc = meth.get ("Access");
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59 std::string acc_s;
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60
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61 if (acc.is_string ())
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62 acc_s = acc.string_value ();
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63 else
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64 acc_s = "class-restricted";
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65
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66 error ("%s: method '%s' has %s access and cannot be run in this context",
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67 from.c_str (), meth.get_name ().c_str (), acc_s.c_str ());
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68 }
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69
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70 void
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71 cdef_method::cdef_method_rep::check_method ()
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72 {
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73 if (is_external ())
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74 {
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75 if (is_dummy_method (m_function))
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76 {
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77 load_path& lp = __get_load_path__ ();
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78
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79 std::string name = get_name ();
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80 std::string cls_name = m_dispatch_type;
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81 std::string pack_name;
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82
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83 std::size_t pos = cls_name.rfind ('.');
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84
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85 if (pos != std::string::npos)
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86 {
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87 pack_name = cls_name.substr (0, pos);
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88 cls_name = cls_name.substr (pos + 1);
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89 }
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90
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91 std::string dir_name;
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92 std::string file_name = lp.find_method (cls_name, name,
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93 dir_name, pack_name);
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94
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95 if (! file_name.empty ())
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96 {
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97 octave_value ov_fcn
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98 = load_fcn_from_file (file_name, dir_name,
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99 m_dispatch_type, pack_name);
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100
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101 if (ov_fcn.is_defined ())
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102 {
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103 m_function = ov_fcn;
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104
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105 make_function_of_class (m_dispatch_type, m_function);
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106 }
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107 }
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108 }
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109 else
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110 {
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111 // FIXME: check out-of-date status
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112 }
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113
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114 if (is_dummy_method (m_function))
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115 error ("no definition found for method '%s' of class '%s'",
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116 get_name ().c_str (), m_dispatch_type.c_str ());
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117 }
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118 }
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119
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120 octave_value_list
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121 cdef_method::cdef_method_rep::execute (const octave_value_list& args,
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122 int nargout, bool do_check_access,
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123 const std::string& who)
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124 {
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125 octave_value_list retval;
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126
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127 if (do_check_access && ! check_access ())
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128 err_method_access (who, wrap ());
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129
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130 if (get ("Abstract").bool_value ())
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131 error ("%s: cannot execute abstract method",
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132 get ("Name").string_value ().c_str ());
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133
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134 check_method ();
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135
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136 if (m_function.is_defined ())
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137 {
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138 interpreter& interp = __get_interpreter__ ();
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139
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140 retval = interp.feval (m_function, args, nargout);
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141 }
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142
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143 return retval;
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144 }
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145
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146 octave_value_list
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147 cdef_method::cdef_method_rep::execute (const cdef_object& obj,
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148 const octave_value_list& args,
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149 int nargout, bool do_check_access,
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150 const std::string& who)
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151 {
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152 octave_value_list retval;
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153
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154 if (do_check_access && ! check_access ())
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155 err_method_access (who, wrap ());
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156
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157 if (get ("Abstract").bool_value ())
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158 error ("%s: cannot execute abstract method",
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159 get ("Name").string_value ().c_str ());
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160
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161 check_method ();
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162
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163 if (m_function.is_defined ())
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164 {
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165 octave_value_list new_args;
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166
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167 new_args.resize (args.length () + 1);
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168
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169 new_args(0) = to_ov (obj);
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170 for (int i = 0; i < args.length (); i++)
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171 new_args(i+1) = args(i);
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172
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173 interpreter& interp = __get_interpreter__ ();
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174
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175 retval = interp.feval (m_function, new_args, nargout);
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176 }
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177
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178 return retval;
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179 }
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180
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181 bool
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182 cdef_method::cdef_method_rep::is_constructor () const
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183 {
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184 if (m_function.is_function())
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185 return m_function.function_value ()->is_classdef_constructor ();
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186
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187 return false;
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188 }
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189
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190 bool
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191 cdef_method::cdef_method_rep::is_defined_in_class (const std::string& cname) const
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192 {
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193 return (m_function.is_function ()
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194 ? m_function.function_value ()->dispatch_class () == cname
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195 : false);
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196 }
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197
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198 std::string
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199 cdef_method::cdef_method_rep::get_doc_string ()
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200 {
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201 check_method ();
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202
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203 octave_function *fcn = m_function.function_value ();
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204
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205 return fcn ? fcn->doc_string () : "";
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206 }
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207
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208 bool
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209 cdef_method::cdef_method_rep::check_access () const
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210 {
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211 cdef_class cls (to_cdef (get ("DefiningClass")));
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212
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213 return octave::check_access (cls, get ("Access"), get_name ());
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214 }
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215
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216 octave_value_list
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217 cdef_method::cdef_method_rep::meta_subsref
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218 (const std::string& type, const std::list<octave_value_list>& idx,
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219 int nargout)
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220 {
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221 octave_value_list retval;
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222
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223 switch (type[0])
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224 {
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225 case '(':
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226 retval = (execute (idx.front (),
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227 type.length () > 1 ? 1 : nargout, true));
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228 break;
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229
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230 default:
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231 error ("invalid meta.method indexing");
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232 break;
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233 }
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234
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235 if (type.length () > 1 && idx.size () > 1 && ! retval.empty ())
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236 retval = retval(0).next_subsref (nargout, type, idx, 1);
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237
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238 return retval;
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239 }
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240
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241 OCTAVE_END_NAMESPACE(octave)