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annotate libinterp/octave-value/cdef-method.h @ 29359:7854d5752dd2

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maint: merge stable to default.
author John W. Eaton <jwe@octave.org>
date Wed, 10 Feb 2021 10:10:40 -0500
parents 853e60367cb6 0a5b15007766
children 0e0cc2760540
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1 ////////////////////////////////////////////////////////////////////////
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2 //
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3 // Copyright (C) 2012-2021 The Octave Project Developers
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4 //
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5 // See the file COPYRIGHT.md in the top-level directory of this
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6 // distribution or <https://octave.org/copyright/>.
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7 //
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8 // This file is part of Octave.
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9 //
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10 // Octave is free software: you can redistribute it and/or modify it
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11 // under the terms of the GNU General Public License as published by
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12 // the Free Software Foundation, either version 3 of the License, or
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13 // (at your option) any later version.
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14 //
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15 // Octave is distributed in the hope that it will be useful, but
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16 // WITHOUT ANY WARRANTY; without even the implied warranty of
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17 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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18 // GNU General Public License for more details.
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19 //
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20 // You should have received a copy of the GNU General Public License
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21 // along with Octave; see the file COPYING. If not, see
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22 // <https://www.gnu.org/licenses/>.
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23 //
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24 ////////////////////////////////////////////////////////////////////////
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25
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26 #if ! defined (octave_cdef_method_h)
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27 #define octave_cdef_method_h 1
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28
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29 #include "octave-config.h"
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30
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31 #include <map>
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32 #include <set>
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33 #include <string>
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34
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35 #include "oct-refcount.h"
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36
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37 #include "cdef-object.h"
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38 #include "ov.h"
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39
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40 namespace octave
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41 {
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42 class
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43 cdef_method : public cdef_meta_object
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44 {
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45 friend class cdef_class;
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46
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47 private:
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48
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49 class
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50 cdef_method_rep : public cdef_meta_object_rep
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51 {
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52 public:
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53
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54 cdef_method_rep (void)
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55 : cdef_meta_object_rep (), function (), dispatch_type ()
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56 { }
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57
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58 cdef_method_rep& operator = (const cdef_method_rep& m) = delete;
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59
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60 ~cdef_method_rep (void) = default;
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61
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62 cdef_object_rep * copy (void) const { return new cdef_method_rep(*this); }
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63
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64 bool is_method (void) const { return true; }
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65
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66 std::string get_name (void) const { return get("Name").string_value (); }
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67
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68 void set_name (const std::string& nm) { put ("Name", nm); }
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69
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70 bool is_static (void) const { return get("Static").bool_value (); }
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71
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72 octave_value get_function (void) const { return function; }
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73
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74 void set_function (const octave_value& fcn) { function = fcn; }
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75
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76 OCTINTERP_API std::string get_doc_string (void);
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77
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78 OCTINTERP_API bool check_access (void) const;
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79
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80 bool is_external (void) const { return ! dispatch_type.empty (); }
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81
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82 void mark_as_external (const std::string& dtype)
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83 {
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84 dispatch_type = dtype;
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85 }
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86
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87 OCTINTERP_API octave_value_list
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88 execute (const octave_value_list& args, int nargout,
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89 bool do_check_access = true, const std::string& who = "");
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90
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91 OCTINTERP_API octave_value_list
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92 execute (const cdef_object& obj,
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93 const octave_value_list& args, int nargout,
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94 bool do_check_access = true, const std::string& who = "");
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95
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96 OCTINTERP_API bool is_constructor (void) const;
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98 OCTINTERP_API bool is_defined_in_class (const std::string& cname) const;
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99
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100 octave_value_list
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101 meta_subsref (const std::string& type,
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102 const std::list<octave_value_list>& idx, int nargout);
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103
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104 bool meta_accepts_postfix_index (char type) const
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105 {
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106 return (type == '(' || type == '.');
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107 }
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108
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109 private:
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110
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111 cdef_method_rep (const cdef_method_rep& m)
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112 : cdef_meta_object_rep (m), function (m.function),
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113 dispatch_type (m.dispatch_type)
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114 { }
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115
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116 OCTINTERP_API void check_method (void);
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117
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118 cdef_method wrap (void)
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119 {
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120 m_count++;
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121 return cdef_method (this);
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122 }
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123
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124 octave_value function;
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125
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126 // When non-empty, the method is externally defined and this member
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127 // is used to cache the dispatch type to look for the method.
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128
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129 std::string dispatch_type;
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130 };
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131
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132 public:
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133
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134 cdef_method (void) : cdef_meta_object () { }
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135
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136 cdef_method (const std::string& nm)
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137 : cdef_meta_object (new cdef_method_rep ())
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138 {
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139 get_rep ()->set_name (nm);
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140 }
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141
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142 cdef_method (const cdef_method& meth) : cdef_meta_object (meth) { }
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143
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144 cdef_method (const cdef_object& obj)
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145 : cdef_meta_object (obj)
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146 {
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147 // This should never happen...
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148 if (! is_method ())
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149 error ("internal error: invalid assignment from %s to meta.method object",
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150 class_name ().c_str ());
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151 }
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152
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153 cdef_method& operator = (const cdef_method& meth)
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154 {
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155 cdef_object::operator = (meth);
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156
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157 return *this;
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158 }
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159
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160 ~cdef_method (void) = default;
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161
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162 // normal invocation
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163 octave_value_list execute (const octave_value_list& args, int nargout,
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164 bool do_check_access = true,
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165 const std::string& who = "")
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166 {
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167 return get_rep ()->execute (args, nargout, do_check_access, who);
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168 }
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169
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170 // dot-invocation: object is pushed as 1st argument
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171 octave_value_list execute (const cdef_object& obj,
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172 const octave_value_list& args, int nargout,
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173 bool do_check_access = true,
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174 const std::string& who = "")
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175 {
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176 return get_rep ()->execute (obj, args, nargout, do_check_access, who);
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177 }
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178
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179 bool check_access (void) const { return get_rep ()->check_access (); }
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180
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181 std::string get_name (void) const { return get_rep ()->get_name (); }
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182
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183 bool is_static (void) const { return get_rep ()->is_static (); }
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184
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185 void set_function (const octave_value& fcn)
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186 {
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187 get_rep ()->set_function (fcn);
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188 }
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189
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190 octave_value get_function (void) const
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191 {
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192 return get_rep ()->get_function ();
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193 }
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194
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195 std::string get_doc_string (void)
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196 {
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197 return get_rep ()->get_doc_string ();
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198 }
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199
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200 bool is_constructor (void) const
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201 {
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202 return get_rep ()->is_constructor ();
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203 }
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204
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205 bool is_defined_in_class (const std::string& cname) const
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206 {
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207 return get_rep ()->is_defined_in_class (cname);
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208 }
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209
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210 bool is_external (void) const { return get_rep ()->is_external (); }
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211
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212 void mark_as_external (const std::string& dtype)
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213 {
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214 get_rep ()->mark_as_external (dtype);
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215 }
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216
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217 private:
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218
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219 cdef_method_rep * get_rep (void)
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220 {
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221 return dynamic_cast<cdef_method_rep *> (cdef_object::get_rep ());
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222 }
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223
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224 const cdef_method_rep * get_rep (void) const
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225 {
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226 return dynamic_cast<const cdef_method_rep *> (cdef_object::get_rep ());
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227 }
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228 };
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229 }
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230
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231 #endif