Mercurial > octave
annotate libinterp/octave-value/cdef-class.cc @ 28439:e760fef2829c stable
refactor octave_fcn_handle class
* ov-fcn-handle.h, ov-fcn-handle.cc (class octave_fcn_handle):
split octave_fcn_handle internally into separate sub-classes for the
following types of function handles: simple, scoped, nested,
classsimple, and anonymous. Update all uses.
* load-path.cc (load_path::package_info::find_private_fcn):
Don't search for private files that are not already in the private
function map.
* ls-mat5.cc (read_mat5_binary_element): Update handling of local
variables for anonymous functions.
* stack-frame.h, stack-frame.cc (stack_frame::set_closure_links,
stack_frame::dup, compiled_fcn_stack_frame::dup,
script_stack_frame::dup, user_fcn_stack_frame::dup,
scope_stack_frame::dup): Delete unnecessary functions.
* ov-fcn.h (octave_function::is_nested_function,
octave_function::is_parent_function): New virtual functions.
author | John W. Eaton <jwe@octave.org> |
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date | Wed, 29 Apr 2020 14:10:27 -0400 |
parents | 3241ede9806c |
children | b743a63e2dab fab862fedf85 |
rev | line source |
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1 //////////////////////////////////////////////////////////////////////// |
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2 // |
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3 // Copyright (C) 2012-2020 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-method.h" |
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36 #include "cdef-package.h" |
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37 #include "cdef-property.h" |
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38 #include "cdef-utils.h" |
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39 #include "errwarn.h" |
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40 #include "interpreter-private.h" |
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41 #include "interpreter.h" |
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42 #include "load-path.h" |
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43 #include "ov-builtin.h" |
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44 #include "ov-classdef.h" |
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45 #include "ov-fcn-handle.h" |
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46 #include "ov-usr-fcn.h" |
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47 #include "parse.h" |
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48 #include "pt-assign.h" |
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49 #include "pt-classdef.h" |
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50 #include "pt-eval.h" |
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51 #include "pt-idx.h" |
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52 #include "pt-misc.h" |
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53 #include "pt-stmt.h" |
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54 #include "pt-walk.h" |
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55 #include "unwind-prot.h" |
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56 |
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57 // Define to 1 to enable debugging statements. |
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58 #define DEBUG_TRACE 0 |
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59 #if DEBUG_TRACE |
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60 # include <iostream> |
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61 #endif |
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62 |
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63 namespace octave |
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64 { |
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65 static octave_value |
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66 make_fcn_handle (const octave_value& fcn, const std::string& meth_name, |
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67 const std::string& class_name) |
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68 { |
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69 octave_value retval; |
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70 |
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71 if (fcn.is_defined ()) |
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72 { |
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73 // FCN_HANDLE: METHOD |
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74 octave_fcn_handle *fh |
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75 = new octave_fcn_handle (fcn, class_name, meth_name); |
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76 |
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77 retval = octave_value (fh); |
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78 } |
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79 |
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80 return retval; |
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81 } |
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82 |
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83 cdef_class::cdef_class_rep::cdef_class_rep (const std::list<cdef_class>& superclasses) |
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84 : cdef_meta_object_rep (), member_count (0), handle_class (false), |
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85 meta (false) |
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86 { |
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87 put ("SuperClasses", to_ov (superclasses)); |
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88 implicit_ctor_list = superclasses; |
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89 } |
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90 |
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91 cdef_method |
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92 cdef_class::cdef_class_rep::find_method (const std::string& nm, bool local) |
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93 { |
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94 auto it = method_map.find (nm); |
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95 |
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96 if (it == method_map.end ()) |
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97 { |
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98 // FIXME: look into class directory |
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99 } |
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100 else |
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101 { |
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102 cdef_method& meth = it->second; |
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103 |
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104 // FIXME: check if method reload needed |
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105 |
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106 if (meth.ok ()) |
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107 return meth; |
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108 } |
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109 |
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110 if (! local) |
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111 { |
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112 // Look into superclasses |
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113 |
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114 Cell super_classes = get ("SuperClasses").cell_value (); |
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115 |
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116 for (int i = 0; i < super_classes.numel (); i++) |
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117 { |
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118 cdef_class cls = lookup_class (super_classes(i)); |
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119 |
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120 cdef_method meth = cls.find_method (nm); |
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121 |
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122 if (meth.ok ()) |
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123 return meth; |
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124 } |
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125 } |
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126 |
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127 return cdef_method (); |
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128 } |
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129 |
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130 class ctor_analyzer : public tree_walker |
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131 { |
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132 public: |
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133 |
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134 ctor_analyzer (void) = delete; |
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135 |
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136 ctor_analyzer (const std::string& ctor, const std::string& obj) |
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137 : tree_walker (), who (ctor), obj_name (obj) { } |
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138 |
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139 ctor_analyzer (const ctor_analyzer&) = delete; |
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140 |
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141 ctor_analyzer& operator = (const ctor_analyzer&) = delete; |
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142 |
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143 ~ctor_analyzer (void) = default; |
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144 |
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145 void visit_statement (tree_statement& t) |
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146 { |
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147 if (t.is_expression ()) |
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148 t.expression ()->accept (*this); |
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149 } |
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150 |
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151 void visit_simple_assignment (tree_simple_assignment& t) |
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152 { |
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153 t.right_hand_side ()->accept (*this); |
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154 } |
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155 |
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156 void visit_multi_assignment (tree_multi_assignment& t) |
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157 { |
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158 t.right_hand_side ()->accept (*this); |
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159 } |
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160 |
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161 void visit_index_expression (tree_index_expression& t) |
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162 { |
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163 t.expression ()->accept (*this); |
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164 } |
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165 |
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166 std::list<cdef_class> get_constructor_list (void) const |
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167 { return ctor_list; } |
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168 |
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169 // NO-OP |
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170 |
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171 void visit_anon_fcn_handle (tree_anon_fcn_handle&) { } |
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172 void visit_argument_list (tree_argument_list&) { } |
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173 void visit_binary_expression (tree_binary_expression&) { } |
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174 void visit_break_command (tree_break_command&) { } |
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175 void visit_colon_expression (tree_colon_expression&) { } |
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176 void visit_continue_command (tree_continue_command&) { } |
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177 void visit_decl_command (tree_decl_command&) { } |
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178 void visit_decl_init_list (tree_decl_init_list&) { } |
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179 void visit_decl_elt (tree_decl_elt&) { } |
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180 void visit_simple_for_command (tree_simple_for_command&) { } |
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181 void visit_complex_for_command (tree_complex_for_command&) { } |
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182 void visit_octave_user_script (octave_user_script&) { } |
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183 void visit_octave_user_function (octave_user_function&) { } |
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184 void visit_function_def (tree_function_def&) { } |
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185 void visit_identifier (tree_identifier&) { } |
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186 void visit_if_clause (tree_if_clause&) { } |
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187 void visit_if_command (tree_if_command&) { } |
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188 void visit_if_command_list (tree_if_command_list&) { } |
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189 void visit_switch_case (tree_switch_case&) { } |
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190 void visit_switch_case_list (tree_switch_case_list&) { } |
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191 void visit_switch_command (tree_switch_command&) { } |
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192 void visit_matrix (tree_matrix&) { } |
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193 void visit_cell (tree_cell&) { } |
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194 void visit_no_op_command (tree_no_op_command&) { } |
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195 void visit_constant (tree_constant&) { } |
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196 void visit_fcn_handle (tree_fcn_handle&) { } |
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197 void visit_parameter_list (tree_parameter_list&) { } |
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198 void visit_postfix_expression (tree_postfix_expression&) { } |
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199 void visit_prefix_expression (tree_prefix_expression&) { } |
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200 void visit_return_command (tree_return_command&) { } |
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201 void visit_try_catch_command (tree_try_catch_command&) { } |
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202 void visit_unwind_protect_command (tree_unwind_protect_command&) { } |
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203 void visit_while_command (tree_while_command&) { } |
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204 void visit_do_until_command (tree_do_until_command&) { } |
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205 |
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206 void visit_superclass_ref (tree_superclass_ref& t) |
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207 { |
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208 if (t.method_name () == obj_name) |
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209 { |
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210 std::string class_name = t.class_name (); |
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211 |
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212 cdef_class cls = lookup_class (class_name, false); |
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213 |
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214 if (cls.ok ()) |
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215 ctor_list.push_back (cls); |
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216 } |
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217 } |
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218 |
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219 private: |
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220 |
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221 // The name of the constructor being analyzed. |
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222 std::string who; |
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223 |
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224 // The name of the first output argument of the constructor. |
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225 std::string obj_name; |
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226 |
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227 // The list of superclass constructors that are explicitly called. |
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228 std::list<cdef_class> ctor_list; |
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229 }; |
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230 |
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231 void |
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232 cdef_class::cdef_class_rep::install_method (const cdef_method& meth) |
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233 { |
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234 method_map[meth.get_name ()] = meth; |
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235 |
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236 member_count++; |
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237 |
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238 if (meth.is_constructor ()) |
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239 { |
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240 // Analyze the constructor code to determine what superclass |
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241 // constructors are called explicitly. |
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242 |
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243 octave_value ov_fcn = meth.get_function (); |
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244 |
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245 if (ov_fcn.is_defined ()) |
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246 { |
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247 octave_user_function *uf = ov_fcn.user_function_value (true); |
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248 |
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249 if (uf) |
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250 { |
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251 tree_parameter_list *ret_list = uf->return_list (); |
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252 tree_statement_list *body = uf->body (); |
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253 |
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254 if (! ret_list || ret_list->size () != 1) |
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255 error ("%s: invalid constructor output arguments", |
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256 meth.get_name ().c_str ()); |
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257 |
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258 std::string obj_name = ret_list->front ()->name (); |
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259 ctor_analyzer a (meth.get_name (), obj_name); |
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260 |
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261 body->accept (a); |
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262 |
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263 std::list<cdef_class> explicit_ctor_list |
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264 = a.get_constructor_list (); |
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265 |
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266 for (const auto& cdef_cls : explicit_ctor_list) |
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267 { |
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268 #if DEBUG_TRACE |
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269 std::cerr << "explicit superclass constructor: " |
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270 << cdef_cls.get_name () << std::endl; |
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271 #endif |
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272 |
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273 implicit_ctor_list.remove (cdef_cls); |
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274 } |
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275 } |
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276 } |
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277 } |
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278 } |
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279 |
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280 void |
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281 cdef_class::cdef_class_rep::load_all_methods (void) |
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282 { |
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283 // FIXME: re-scan class directory |
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284 } |
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285 |
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286 Cell |
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287 cdef_class::cdef_class_rep::get_methods (bool include_ctor) |
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288 { |
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289 std::map<std::string,cdef_method> meths; |
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290 |
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291 find_methods (meths, false, include_ctor); |
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292 |
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293 Cell c (meths.size (), 1); |
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294 |
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295 int idx = 0; |
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296 |
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297 for (const auto& nm_mthd : meths) |
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298 c(idx++, 0) = to_ov (nm_mthd.second); |
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299 |
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300 return c; |
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301 } |
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302 |
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303 std::map<std::string, cdef_method> |
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304 cdef_class::cdef_class_rep::get_method_map (bool only_inherited, |
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305 bool include_ctor) |
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306 { |
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307 std::map<std::string, cdef_method> methods; |
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308 |
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309 find_methods (methods, only_inherited, include_ctor); |
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310 |
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311 return methods; |
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312 } |
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313 |
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314 void |
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315 cdef_class::cdef_class_rep::find_methods (std::map<std::string, cdef_method>& meths, |
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316 bool only_inherited, |
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317 bool include_ctor) |
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318 { |
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319 load_all_methods (); |
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320 |
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321 method_const_iterator it; |
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322 |
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323 for (it = method_map.begin (); it != method_map.end (); ++it) |
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324 { |
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325 if (include_ctor || ! it->second.is_constructor ()) |
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326 { |
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327 std::string nm = it->second.get_name (); |
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328 |
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329 if (meths.find (nm) == meths.end ()) |
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330 { |
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331 if (only_inherited) |
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332 { |
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333 octave_value acc = it->second.get ("Access"); |
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334 |
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335 if (! acc.is_string () |
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336 || acc.string_value () == "private") |
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337 continue; |
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338 } |
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339 |
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340 meths[nm] = it->second; |
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341 } |
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342 } |
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343 } |
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344 |
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345 // Look into superclasses |
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346 |
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347 Cell super_classes = get ("SuperClasses").cell_value (); |
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348 |
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349 for (int i = 0; i < super_classes.numel (); i++) |
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350 { |
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351 cdef_class cls = lookup_class (super_classes(i)); |
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352 |
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353 cls.get_rep ()->find_methods (meths, true, false); |
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354 } |
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355 } |
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356 |
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357 cdef_property |
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358 cdef_class::cdef_class_rep::find_property (const std::string& nm) |
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359 { |
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360 auto it = property_map.find (nm); |
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361 |
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362 if (it != property_map.end ()) |
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363 { |
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364 cdef_property& prop = it->second; |
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365 |
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366 if (prop.ok ()) |
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367 return prop; |
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368 } |
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369 |
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370 // Look into superclasses |
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371 |
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372 Cell super_classes = get ("SuperClasses").cell_value (); |
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373 |
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374 for (int i = 0; i < super_classes.numel (); i++) |
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375 { |
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376 cdef_class cls = lookup_class (super_classes(i)); |
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377 |
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378 cdef_property prop = cls.find_property (nm); |
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379 |
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380 if (prop.ok ()) |
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381 return prop; |
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382 } |
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383 |
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384 return cdef_property (); |
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385 } |
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386 |
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387 void |
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388 cdef_class::cdef_class_rep::install_property (const cdef_property& prop) |
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389 { |
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390 property_map[prop.get_name ()] = prop; |
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391 |
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392 member_count++; |
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393 } |
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394 |
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395 Cell |
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396 cdef_class::cdef_class_rep::get_properties (int mode) |
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397 { |
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398 std::map<std::string,cdef_property> props; |
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399 |
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400 props = get_property_map (mode); |
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401 |
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402 Cell c (props.size (), 1); |
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403 |
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404 int idx = 0; |
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405 |
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406 for (const auto& pname_prop : props) |
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407 c(idx++, 0) = to_ov (pname_prop.second); |
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408 |
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409 return c; |
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410 } |
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411 |
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412 std::map<std::string, cdef_property> |
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413 cdef_class::cdef_class_rep::get_property_map (int mode) |
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414 { |
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415 std::map<std::string,cdef_property> props; |
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416 |
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417 find_properties (props, mode); |
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418 |
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419 return props; |
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420 } |
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421 |
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422 void |
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423 cdef_class::cdef_class_rep::find_properties (std::map<std::string, |
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424 cdef_property>& props, |
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425 int mode) |
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426 { |
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427 property_const_iterator it; |
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428 |
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429 for (it = property_map.begin (); it != property_map.end (); ++it) |
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430 { |
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431 std::string nm = it->second.get_name (); |
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432 |
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433 if (props.find (nm) == props.end ()) |
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434 { |
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435 if (mode == property_inherited) |
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436 { |
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437 octave_value acc = it->second.get ("GetAccess"); |
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438 |
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439 if (! acc.is_string () |
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440 || acc.string_value () == "private") |
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441 continue; |
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442 } |
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443 |
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444 props[nm] = it->second; |
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445 } |
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446 } |
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447 |
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448 // Look into superclasses |
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449 |
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450 Cell super_classes = get ("SuperClasses").cell_value (); |
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451 |
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452 for (int i = 0; i < super_classes.numel (); i++) |
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453 { |
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454 cdef_class cls = lookup_class (super_classes(i)); |
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455 |
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456 cls.get_rep ()->find_properties (props, |
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457 (mode == property_all |
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458 ? property_all |
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459 : property_inherited)); |
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460 } |
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461 } |
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462 |
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463 void |
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464 cdef_class::cdef_class_rep::find_names (std::set<std::string>& names, |
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465 bool all) |
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466 { |
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467 load_all_methods (); |
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468 |
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469 for (const auto& cls_fnmap : method_map) |
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470 { |
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471 if (! cls_fnmap.second.is_constructor ()) |
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472 { |
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473 std::string nm = cls_fnmap.second.get_name (); |
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474 |
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475 if (! all) |
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476 { |
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477 octave_value acc = cls_fnmap.second.get ("Access"); |
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478 |
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479 if (! acc.is_string() |
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480 || acc.string_value () != "public") |
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481 continue; |
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482 } |
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483 |
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484 names.insert (nm); |
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485 } |
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486 } |
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487 |
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488 for (const auto& pname_prop : property_map) |
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489 { |
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490 std::string nm = pname_prop.second.get_name (); |
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491 |
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492 if (! all) |
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493 { |
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494 octave_value acc = pname_prop.second.get ("GetAccess"); |
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495 |
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496 if (! acc.is_string() |
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497 || acc.string_value () != "public") |
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498 continue; |
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499 } |
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500 |
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501 names.insert (nm); |
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502 } |
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503 |
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504 // Look into superclasses |
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505 |
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506 Cell super_classes = get ("SuperClasses").cell_value (); |
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507 |
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508 for (int i = 0; i < super_classes.numel (); i++) |
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509 { |
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510 cdef_class cls = lookup_class (super_classes(i)); |
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511 |
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512 cls.get_rep ()->find_names (names, all); |
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513 } |
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514 } |
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515 |
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516 string_vector |
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517 cdef_class::cdef_class_rep::get_names (void) |
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518 { |
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519 std::set<std::string> names; |
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520 |
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521 find_names (names, false); |
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522 |
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523 string_vector v (names); |
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524 |
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525 return v.sort (true); |
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526 } |
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527 |
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528 void |
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529 cdef_class::cdef_class_rep::delete_object (const cdef_object& obj) |
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530 { |
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531 cdef_method dtor = find_method ("delete"); |
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532 |
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533 // FIXME: would it be better to tell find_method above to not find |
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534 // overloaded functions? |
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535 |
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536 if (dtor.ok () && dtor.is_defined_in_class (get_name ())) |
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537 dtor.execute (obj, octave_value_list (), 0, true, "destructor"); |
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538 |
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539 // FIXME: should we destroy corresponding properties here? |
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540 |
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541 // Call "delete" in super classes |
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542 |
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543 Cell super_classes = get ("SuperClasses").cell_value (); |
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544 |
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545 for (int i = 0; i < super_classes.numel (); i++) |
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546 { |
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547 cdef_class cls = lookup_class (super_classes(i)); |
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548 |
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549 if (cls.get_name () != "handle") |
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550 cls.delete_object (obj); |
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551 } |
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552 } |
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553 |
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554 octave_value_list |
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555 cdef_class::cdef_class_rep::meta_subsref (const std::string& type, |
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556 const std::list<octave_value_list>& idx, |
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557 int nargout) |
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558 { |
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559 size_t skip = 1; |
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560 |
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561 octave_value_list retval; |
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562 |
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563 switch (type[0]) |
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564 { |
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565 case '(': |
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566 // Constructor call |
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567 |
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568 #if DEBUG_TRACE |
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569 std::cerr << "constructor" << std::endl; |
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570 #endif |
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571 |
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572 retval(0) = construct (idx.front ()); |
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573 break; |
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574 |
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575 case '.': |
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576 { |
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577 // Static method, constant (or property?) |
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578 |
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579 #if DEBUG_TRACE |
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580 std::cerr << "static method/property" << std::endl; |
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581 #endif |
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582 |
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583 if (idx.front ().length () != 1) |
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584 error ("invalid meta.class indexing"); |
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585 |
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586 std::string nm = idx.front ()(0).xstring_value ("invalid meta.class indexing, expected a method or property name"); |
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587 |
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588 cdef_method meth = find_method (nm); |
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589 |
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590 if (meth.ok ()) |
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591 { |
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592 if (! meth.is_static ()) |
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593 error ("method '%s' is not static", nm.c_str ()); |
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594 |
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595 octave_value_list args; |
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596 |
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597 if (type.length () > 1 && idx.size () > 1 && type[1] == '(') |
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598 { |
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599 args = *(++(idx.begin ())); |
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600 skip++; |
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601 } |
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602 |
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603 retval = meth.execute (args, (type.length () > skip |
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604 ? 1 : nargout), true, |
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605 "meta.class"); |
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606 } |
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607 else |
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608 { |
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609 cdef_property prop = find_property (nm); |
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610 |
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611 if (! prop.ok ()) |
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612 error ("no such method or property '%s'", nm.c_str ()); |
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613 |
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614 if (! prop.is_constant ()) |
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615 error ("property '%s' is not constant", nm.c_str ()); |
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616 |
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617 retval(0) = prop.get_value (true, "meta.class"); |
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618 } |
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619 } |
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620 break; |
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621 |
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622 default: |
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623 error ("invalid meta.class indexing"); |
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624 break; |
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625 } |
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626 |
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627 if (type.length () > skip && idx.size () > skip && ! retval.empty ()) |
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628 retval = retval(0).next_subsref (nargout, type, idx, skip); |
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629 |
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630 return retval; |
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631 } |
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632 |
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633 void |
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634 cdef_class::cdef_class_rep::meta_release (void) |
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635 { |
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636 cdef_manager& cdm |
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637 = __get_cdef_manager__ ("cdef_class::cdef_class_rep::meta_release"); |
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638 |
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639 cdm.unregister_class (wrap ()); |
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640 } |
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641 |
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642 void |
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643 cdef_class::cdef_class_rep::initialize_object (cdef_object& obj) |
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644 { |
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645 // Populate the object with default property values |
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646 |
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647 std::list<cdef_class> super_classes |
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648 = lookup_classes (get ("SuperClasses").cell_value ()); |
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649 |
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650 for (auto& cls : super_classes) |
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651 cls.initialize_object (obj); |
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652 |
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653 for (const auto& pname_prop : property_map) |
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654 { |
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655 if (! pname_prop.second.get ("Dependent").bool_value ()) |
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656 { |
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657 octave_value pvalue = pname_prop.second.get ("DefaultValue"); |
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658 |
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659 if (pvalue.is_defined ()) |
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660 obj.put (pname_prop.first, pvalue); |
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661 else |
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662 obj.put (pname_prop.first, octave_value (Matrix ())); |
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663 } |
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664 } |
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665 |
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666 m_count++; |
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667 obj.mark_for_construction (cdef_class (this)); |
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668 } |
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669 |
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670 void |
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671 cdef_class::cdef_class_rep::run_constructor (cdef_object& obj, |
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672 const octave_value_list& args) |
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673 { |
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674 octave_value_list empty_args; |
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675 |
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676 for (const auto& cls : implicit_ctor_list) |
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677 { |
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678 cdef_class supcls = lookup_class (cls); |
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679 |
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680 supcls.run_constructor (obj, empty_args); |
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681 } |
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682 |
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683 std::string cls_name = get_name (); |
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684 std::string ctor_name = get_base_name (cls_name); |
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685 |
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686 cdef_method ctor = find_method (ctor_name); |
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687 |
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688 if (ctor.ok ()) |
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689 { |
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690 octave_value_list ctor_args (args); |
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691 octave_value_list ctor_retval; |
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692 |
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693 ctor_args.prepend (to_ov (obj)); |
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694 ctor_retval = ctor.execute (ctor_args, 1, true, "constructor"); |
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695 |
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696 if (ctor_retval.length () != 1) |
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697 error ("%s: invalid number of output arguments for classdef constructor", |
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698 ctor_name.c_str ()); |
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699 |
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700 obj = to_cdef (ctor_retval(0)); |
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701 } |
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702 |
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703 obj.mark_as_constructed (wrap ()); |
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704 } |
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705 |
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706 octave_value |
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707 cdef_class::cdef_class_rep::get_method (const std::string& name) const |
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708 { |
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709 auto p = method_map.find (name); |
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710 |
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711 if (p == method_map.end ()) |
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712 return octave_value (); |
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713 |
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714 return p->second.get_function (); |
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715 } |
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716 |
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717 |
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718 octave_value |
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719 cdef_class::cdef_class_rep::construct (const octave_value_list& args) |
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720 { |
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721 cdef_object obj = construct_object (args); |
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722 |
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723 if (obj.ok ()) |
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724 return to_ov (obj); |
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|
725 |
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|
726 return octave_value (); |
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|
727 } |
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changeset
|
728 |
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729 cdef_object |
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730 cdef_class::cdef_class_rep::construct_object (const octave_value_list& args) |
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731 { |
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732 if (is_abstract ()) |
27216
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733 error ("cannot instantiate object for abstract class '%s'", |
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734 get_name ().c_str ()); |
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|
735 |
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|
736 cdef_object obj; |
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|
737 |
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738 if (is_meta_class ()) |
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|
739 { |
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740 // This code path is only used to create empty meta objects |
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741 // as filler for the empty values within a meta object array. |
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742 |
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743 cdef_class this_cls = wrap (); |
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744 |
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|
745 static cdef_object empty_class; |
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746 |
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747 cdef_manager& cdm |
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748 = __get_cdef_manager__ ("cdef_class::cdef_class_rep::construct_object"); |
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749 |
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750 if (this_cls == cdm.meta_class ()) |
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751 { |
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752 if (! empty_class.ok ()) |
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753 empty_class = cdm.make_class ("", std::list<cdef_class> ()); |
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754 obj = empty_class; |
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755 } |
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756 else if (this_cls == cdm.meta_property ()) |
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757 { |
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758 static cdef_property empty_property; |
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759 |
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760 if (! empty_class.ok ()) |
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761 empty_class = cdm.make_class ("", std::list<cdef_class> ()); |
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762 if (! empty_property.ok ()) |
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763 empty_property = cdm.make_property (empty_class, ""); |
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764 obj = empty_property; |
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765 } |
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766 else if (this_cls == cdm.meta_method ()) |
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767 { |
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768 static cdef_method empty_method; |
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769 |
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770 if (! empty_class.ok ()) |
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771 empty_class = cdm.make_class ("", std::list<cdef_class> ()); |
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772 if (! empty_method.ok ()) |
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773 empty_method = cdm.make_method (empty_class, "", octave_value ()); |
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774 obj = empty_method; |
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775 } |
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776 else if (this_cls == cdm.meta_package ()) |
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777 { |
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778 static cdef_package empty_package; |
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779 |
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|
780 if (! empty_package.ok ()) |
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781 empty_package = cdm.make_package (""); |
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782 obj = empty_package; |
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783 } |
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784 else |
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785 panic_impossible (); |
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786 |
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787 return obj; |
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788 } |
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789 else |
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790 { |
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791 if (is_handle_class ()) |
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792 obj = cdef_object (new handle_cdef_object ()); |
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793 else |
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794 obj = cdef_object (new value_cdef_object ()); |
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795 obj.set_class (wrap ()); |
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796 |
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|
797 initialize_object (obj); |
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798 |
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799 run_constructor (obj, args); |
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800 |
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801 return obj; |
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802 } |
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803 |
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804 return cdef_object (); |
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805 } |
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806 |
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807 static octave_value |
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808 compute_attribute_value (tree_evaluator& tw, |
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809 tree_classdef_attribute *t) |
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810 { |
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811 tree_expression *expr = t->expression (); |
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812 |
26774
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|
813 if (expr) |
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814 { |
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815 if (expr->is_identifier ()) |
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816 { |
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817 std::string s = expr->name (); |
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818 |
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819 if (s == "public") |
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820 return std::string ("public"); |
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821 else if (s == "protected") |
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822 return std::string ("protected"); |
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|
823 else if (s == "private") |
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824 return std::string ("private"); |
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|
825 } |
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|
826 |
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|
827 return expr->evaluate (tw); |
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|
828 } |
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|
829 else |
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830 return octave_value (true); |
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|
831 } |
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|
832 |
26774
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|
833 template <typename T> |
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|
834 static std::string |
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835 attribute_value_to_string (T *t, octave_value v) |
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|
836 { |
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|
837 if (v.is_string ()) |
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838 return v.string_value (); |
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|
839 else if (t->expression ()) |
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840 return t->expression ()->original_text (); |
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|
841 else |
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|
842 return "true"; |
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|
843 } |
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|
844 |
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|
845 cdef_class |
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846 cdef_class::make_meta_class (interpreter& interp, |
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847 tree_classdef *t, bool is_at_folder) |
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848 { |
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|
849 cdef_class retval; |
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850 std::string class_name, full_class_name; |
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|
851 |
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|
852 // Class creation |
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|
853 |
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854 class_name = full_class_name = t->ident ()->name (); |
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855 if (! t->package_name ().empty ()) |
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856 full_class_name = t->package_name () + '.' + full_class_name; |
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|
857 |
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|
858 #if DEBUG_TRACE |
26774
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859 std::cerr << "class: " << full_class_name << std::endl; |
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860 #endif |
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861 |
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862 // Push a dummy scope frame on the call stack that corresponds to |
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863 // the scope that was used when parsing classdef object. Without |
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864 // this, we may pick up stray values from the current scope when |
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865 // evaluating expressions found in things like attribute lists. |
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866 |
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|
867 unwind_protect frame; |
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868 |
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|
869 tree_evaluator& tw = interp.get_evaluator (); |
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|
870 |
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871 tw.push_dummy_scope (full_class_name); |
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872 frame.add_method (tw, &octave::tree_evaluator::pop_scope); |
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873 |
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874 std::list<cdef_class> slist; |
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875 |
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876 if (t->superclass_list ()) |
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877 { |
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878 for (auto& scls : (*t->superclass_list ())) |
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879 { |
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880 std::string sclass_name = (scls)->class_name (); |
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881 |
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882 #if DEBUG_TRACE |
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883 std::cerr << "superclass: " << sclass_name << std::endl; |
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884 #endif |
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885 |
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886 cdef_class sclass = lookup_class (sclass_name); |
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887 |
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888 if (sclass.get ("Sealed").bool_value ()) |
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889 error ("'%s' cannot inherit from '%s', because it is sealed", |
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890 full_class_name.c_str (), sclass_name.c_str ()); |
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891 |
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892 slist.push_back (sclass); |
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893 } |
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894 } |
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895 |
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896 cdef_manager& cdm = __get_cdef_manager__ ("cdef_class::make_meta_class"); |
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897 |
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898 retval = cdm.make_class (full_class_name, slist); |
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899 |
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900 // Package owning this class |
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901 |
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902 if (! t->package_name ().empty ()) |
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903 { |
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904 cdef_package pack = cdm.find_package (t->package_name ()); |
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905 |
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906 if (pack.ok ()) |
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907 retval.put ("ContainingPackage", to_ov (pack)); |
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908 } |
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909 |
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910 // Class attributes |
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911 |
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912 if (t->attribute_list ()) |
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913 { |
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914 for (const auto& attr : (*t->attribute_list ())) |
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915 { |
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916 std::string aname = attr->ident ()->name (); |
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917 octave_value avalue = compute_attribute_value (tw, attr); |
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918 |
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919 #if DEBUG_TRACE |
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920 std::cerr << "class attribute: " << aname << " = " |
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921 << attribute_value_to_string (attr, avalue) << std::endl; |
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922 #endif |
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923 |
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924 retval.put (aname, avalue); |
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925 } |
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|
926 } |
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|
927 |
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928 tree_classdef_body *b = t->body (); |
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|
929 |
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930 if (b) |
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|
931 { |
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932 // Keep track of the get/set accessor methods. They will be used |
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933 // later on when creating properties. |
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|
934 |
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935 std::map<std::string, octave_value> get_methods; |
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936 std::map<std::string, octave_value> set_methods; |
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937 |
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|
938 // Method blocks |
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|
939 |
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|
940 std::list<tree_classdef_methods_block *> mb_list = b->methods_list (); |
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|
941 |
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|
942 load_path& lp = interp.get_load_path (); |
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|
943 |
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|
944 for (auto& mb_p : mb_list) |
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|
945 { |
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|
946 std::map<std::string, octave_value> amap; |
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|
947 |
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|
948 #if DEBUG_TRACE |
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|
949 std::cerr << "method block" << std::endl; |
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|
950 #endif |
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|
951 |
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|
952 // Method attributes |
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|
953 |
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|
954 if (mb_p->attribute_list ()) |
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|
955 { |
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|
956 for (auto& attr_p : *mb_p->attribute_list ()) |
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|
957 { |
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958 std::string aname = attr_p->ident ()->name (); |
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959 octave_value avalue = compute_attribute_value (tw, attr_p); |
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|
960 |
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|
961 #if DEBUG_TRACE |
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|
962 std::cerr << "method attribute: " << aname << " = " |
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|
963 << attribute_value_to_string (attr_p, avalue) |
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964 << std::endl; |
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|
965 #endif |
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|
966 |
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|
967 amap[aname] = avalue; |
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|
968 } |
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|
969 } |
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|
970 |
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|
971 // Methods |
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|
972 |
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|
973 if (mb_p->element_list ()) |
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|
974 { |
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|
975 for (auto& mtd : *mb_p->element_list ()) |
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976 { |
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|
977 std::string mname = mtd.function_value ()->name (); |
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978 std::string mprefix = mname.substr (0, 4); |
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|
979 |
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|
980 if (mprefix == "get.") |
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|
981 get_methods[mname.substr (4)] |
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|
982 = make_fcn_handle (mtd, mname, full_class_name); |
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|
983 else if (mprefix == "set.") |
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|
984 set_methods[mname.substr (4)] |
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|
985 = make_fcn_handle (mtd, mname, full_class_name); |
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|
986 else |
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|
987 { |
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|
988 cdef_method meth = cdm.make_method (retval, mname, mtd); |
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|
989 |
2f847e3e8d6b
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|
990 #if DEBUG_TRACE |
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|
991 std::cerr << (mname == class_name ? "constructor" |
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992 : "method") |
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993 << ": " << mname << std::endl; |
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994 #endif |
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995 |
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996 for (auto& attrnm_val : amap) |
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997 meth.put (attrnm_val.first, attrnm_val.second); |
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998 |
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999 retval.install_method (meth); |
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1000 } |
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1001 } |
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1002 } |
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1003 } |
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1004 |
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1005 if (is_at_folder) |
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1006 { |
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1007 // Look for all external methods visible on octave path at the |
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1008 // time of loading of the class. |
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1009 // |
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1010 // FIXME: This is an "extension" to Matlab behavior, which only looks |
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1011 // in the @-folder containing the original classdef file. However, |
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1012 // this is easier to implement it that way at the moment. |
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1013 |
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1014 std::list<std::string> external_methods |
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1015 = lp.methods (full_class_name); |
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1016 |
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1017 for (const auto& mtdnm : external_methods) |
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1018 { |
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1019 // FIXME: should we issue a warning if the method is already |
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1020 // defined in the classdef file? |
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1021 |
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1022 if (mtdnm != class_name |
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1023 && ! retval.find_method (mtdnm, true).ok ()) |
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1024 { |
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1025 // Create a dummy method that is used until the actual |
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1026 // method is loaded. |
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1027 octave_user_function *fcn = new octave_user_function (); |
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1028 |
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1029 fcn->stash_function_name (mtdnm); |
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1030 |
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1031 cdef_method meth |
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1032 = cdm.make_method (retval, mtdnm, octave_value (fcn)); |
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1033 |
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1034 retval.install_method (meth); |
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1035 } |
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1036 } |
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1037 } |
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1038 |
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1039 // Property blocks |
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1040 |
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1041 // FIXME: default property expression should be able to call static |
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1042 // methods of the class being constructed. A restricted CLASSNAME |
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1043 // symbol should be added to the scope before evaluating default |
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1044 // value expressions. |
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1045 |
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1046 std::list<tree_classdef_properties_block *> pb_list |
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1047 = b->properties_list (); |
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1048 |
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1049 for (auto& pb_p : pb_list) |
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1050 { |
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1051 std::map<std::string, octave_value> amap; |
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1052 |
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1053 #if DEBUG_TRACE |
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1054 std::cerr << "property block" << std::endl; |
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1055 #endif |
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1056 |
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1057 // Property attributes |
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1058 |
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1059 if (pb_p->attribute_list ()) |
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1060 { |
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1061 for (auto& attr_p : *pb_p->attribute_list ()) |
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1062 { |
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1063 std::string aname = attr_p->ident ()->name (); |
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1064 octave_value avalue = compute_attribute_value (tw, attr_p); |
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1065 |
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1066 #if DEBUG_TRACE |
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1067 std::cerr << "property attribute: " << aname << " = " |
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1068 << attribute_value_to_string (attr_p, avalue) |
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1069 << std::endl; |
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1070 #endif |
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1071 |
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1072 if (aname == "Access") |
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1073 { |
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1074 amap["GetAccess"] = avalue; |
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1075 amap["SetAccess"] = avalue; |
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1076 } |
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1077 else |
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1078 amap[aname] = avalue; |
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1079 } |
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1080 } |
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1081 |
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1082 // Properties |
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1083 |
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1084 if (pb_p->element_list ()) |
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1085 { |
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1086 for (auto& prop_p : *pb_p->element_list ()) |
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1087 { |
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1088 std::string prop_name = prop_p->ident ()->name (); |
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1089 |
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1090 cdef_property prop = cdm.make_property (retval, prop_name); |
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1091 |
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1092 #if DEBUG_TRACE |
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1093 std::cerr << "property: " << prop_p->ident ()->name () |
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1094 << std::endl; |
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1095 #endif |
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1096 |
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1097 tree_expression *expr = prop_p->expression (); |
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1098 if (expr) |
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1099 { |
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1100 octave_value pvalue = expr->evaluate (tw); |
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1101 |
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1102 #if DEBUG_TRACE |
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1103 std::cerr << "property default: " |
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1104 << attribute_value_to_string (prop_p, pvalue) |
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1105 << std::endl; |
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1106 #endif |
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1107 |
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1108 prop.put ("DefaultValue", pvalue); |
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1109 } |
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1110 |
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1111 // Install property attributes. This is done before assigning |
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1112 // the property accessors so we can do validation by using |
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1113 // cdef_property methods. |
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1114 |
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1115 for (auto& attrnm_val : amap) |
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1116 prop.put (attrnm_val.first, attrnm_val.second); |
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1117 |
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1118 // Install property access methods, if any. Remove the |
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1119 // accessor methods from the temporary storage map, so we can |
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1120 // detect which ones are invalid and do not correspond to a |
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1121 // defined property. |
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1122 |
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1123 auto git = get_methods.find (prop_name); |
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1124 |
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1125 if (git != get_methods.end ()) |
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1126 { |
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1127 make_function_of_class (retval, git->second); |
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1128 prop.put ("GetMethod", git->second); |
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1129 get_methods.erase (git); |
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1130 } |
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1131 |
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1132 auto sit = set_methods.find (prop_name); |
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1133 |
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1134 if (sit != set_methods.end ()) |
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1135 { |
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1136 make_function_of_class (retval, sit->second); |
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1137 prop.put ("SetMethod", sit->second); |
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1138 set_methods.erase (sit); |
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1139 } |
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1140 |
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1141 retval.install_property (prop); |
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1142 } |
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1143 } |
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1144 } |
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1145 } |
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1146 |
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1147 return retval; |
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1148 } |
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1149 |
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1150 octave_value |
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1151 cdef_class::get_method_function (const std::string& /* nm */) |
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1152 { |
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1153 return octave_value (new octave_classdef_meta (*this)); |
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1154 } |
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1155 } |