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annotate libinterp/octave-value/ov-class.h @ 20619:eef93a493ce3

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use new cell_value method to handle value extraction errors * cellfun.cc, ov-class.cc, ov-struct.cc, ov-usr-fcn.cc: Use new cell_value method.
author John W. Eaton <jwe@octave.org>
date Fri, 09 Oct 2015 14:43:36 -0400
parents a9574e3c6e9e
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /*
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2
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3 Copyright (C) 2007-2015 John W. Eaton
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4 Copyright (C) 2009 VZLU Prague
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5
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6 This file is part of Octave.
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7
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8 Octave is free software; you can redistribute it and/or modify it
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9 under the terms of the GNU General Public License as published by the
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10 Free Software Foundation; either version 3 of the License, or (at your
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11 option) any later version.
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12
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13 Octave is distributed in the hope that it will be useful, but WITHOUT
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14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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16 for more details.
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17
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18 You should have received a copy of the GNU General Public License
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19 along with Octave; see the file COPYING. If not, see
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20 <http://www.gnu.org/licenses/>.
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21
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22 */
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23
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24 #if !defined (octave_ov_class_h)
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25 #define octave_ov_class_h 1
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26
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27 #include <cstdlib>
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28
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29 #include <iosfwd>
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30 #include <string>
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31
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32 #include "mx-base.h"
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33 #include "str-vec.h"
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34
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35 #include "error.h"
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36 #include "oct-map.h"
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37 #include "ov-base.h"
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38 #include "ov-typeinfo.h"
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39
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40 class octave_value_list;
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41
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42 class tree_walker;
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43
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44 // Data structures.
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45
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46 class
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47 octave_class : public octave_base_value
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48 {
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49 public:
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50
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51 octave_class (void)
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52 : octave_base_value (), map (), c_name (),
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53 parent_list (), obsolete_copies (0)
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54 { }
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55
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56 octave_class (const octave_map& m, const std::string& id,
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57 const std::list<std::string>& plist)
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58 : octave_base_value (), map (m), c_name (id),
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59 parent_list (plist), obsolete_copies (0)
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60 { }
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61
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62 octave_class (const octave_map& m, const std::string& id,
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63 const octave_value_list& parents);
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64
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65 octave_class (const octave_class& s)
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66 : octave_base_value (s), map (s.map), c_name (s.c_name),
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67 parent_list (s.parent_list), obsolete_copies (0) { }
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68
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69 ~octave_class (void) { }
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70
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71 octave_base_value *clone (void) const { return new octave_class (*this); }
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72
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73 octave_base_value *unique_clone (void);
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74
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75 octave_base_value *empty_clone (void) const
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76 {
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77 return new octave_class (octave_map (map.keys ()), c_name, parent_list);
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78 }
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79
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80 Cell dotref (const octave_value_list& idx);
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81
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82 Matrix size (void);
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83
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84 octave_idx_type numel (const octave_value_list&);
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85
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86 octave_value subsref (const std::string& type,
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87 const std::list<octave_value_list>& idx)
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88 {
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89 octave_value_list tmp = subsref (type, idx, 1);
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90 return tmp.length () > 0 ? tmp(0) : octave_value ();
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91 }
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92
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93 octave_value_list subsref (const std::string& type,
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94 const std::list<octave_value_list>& idx,
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95 int nargout);
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96
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97 octave_value_list
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98 do_multi_index_op (int nargout, const octave_value_list& idx)
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99 {
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100 return subsref ("(", std::list<octave_value_list> (1, idx), nargout);
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101 }
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102
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103 static octave_value numeric_conv (const Cell& val,
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104 const std::string& type);
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105
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106 void assign(const std::string& k, const octave_value& rhs)
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107 { map.assign (k, rhs); };
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108
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109 octave_value subsasgn (const std::string& type,
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110 const std::list<octave_value_list>& idx,
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111 const octave_value& rhs);
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112
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113 octave_value undef_subsasgn (const std::string& type,
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114 const std::list<octave_value_list>& idx,
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115 const octave_value& rhs);
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116
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117 idx_vector index_vector (bool require_integers = false) const;
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118
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119 dim_vector dims (void) const { return map.dims (); }
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120
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121 size_t byte_size (void) const;
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122
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123 // This is the number of elements in each field. The total number
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124 // of elements is numel () * nfields ().
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125 octave_idx_type numel (void) const
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126 {
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127 dim_vector dv = dims ();
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128 return dv.numel ();
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129 }
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130
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131 octave_idx_type nfields (void) const { return map.nfields (); }
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132
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133 size_t nparents (void) const { return parent_list.size (); }
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134
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135 octave_value reshape (const dim_vector& new_dims) const
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136 {
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137 octave_class retval = octave_class (*this);
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138 retval.map = retval.map_value ().reshape (new_dims);
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139 return octave_value (new octave_class (retval));
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140 }
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141
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142 octave_value resize (const dim_vector& dv, bool = false) const
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143 {
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144 octave_class retval = octave_class (*this);
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145 retval.map.resize (dv);
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146 return octave_value (new octave_class (retval));
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147 }
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148
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149 bool is_defined (void) const { return true; }
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150
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151 bool is_map (void) const { return false; }
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152
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153 bool is_object (void) const { return true; }
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154
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155 octave_map map_value (void) const { return map; }
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156
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157 string_vector map_keys (void) const;
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158
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159 std::list<std::string> parent_class_name_list (void) const
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160 { return parent_list; }
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161
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162 string_vector parent_class_names (void) const
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163 { return string_vector (parent_list); }
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164
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165 octave_base_value *find_parent_class (const std::string&);
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166
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167 octave_base_value *unique_parent_class (const std::string&);
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168
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169 bool is_instance_of (const std::string&) const;
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170
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171 string_vector all_strings (bool pad) const;
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172
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173 void print (std::ostream& os, bool pr_as_read_syntax = false);
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174
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175 void print_raw (std::ostream& os, bool pr_as_read_syntax = false) const;
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176
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177 bool print_name_tag (std::ostream& os, const std::string& name) const;
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178
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179 void print_with_name (std::ostream& os, const std::string& name,
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180 bool print_padding = true);
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181
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182 bool reconstruct_exemplar (void);
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183
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184 static void clear_exemplar_map (void);
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185
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186 bool reconstruct_parents (void);
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187
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188 bool save_ascii (std::ostream& os);
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189
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190 bool load_ascii (std::istream& is);
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191
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192 bool save_binary (std::ostream& os, bool& save_as_floats);
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193
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194 bool load_binary (std::istream& is, bool swap,
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195 oct_mach_info::float_format fmt);
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196
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197 bool save_hdf5 (octave_hdf5_id loc_id, const char *name, bool save_as_floats);
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198
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199 bool load_hdf5 (octave_hdf5_id loc_id, const char *name);
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200
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201 mxArray *as_mxArray (void) const;
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202
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203 private:
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204
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205 octave_map map;
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206
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207
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208 public:
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209 int type_id (void) const { return t_id; }
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210 std::string type_name (void) const { return t_name; }
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211 std::string class_name (void) const { return c_name; }
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212
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213 static int static_type_id (void) { return t_id; }
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214 static std::string static_type_name (void) { return t_name; }
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215 static std::string static_class_name (void) { return "<unknown>"; }
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216 static void register_type (void);
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217
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218 private:
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219 static int t_id;
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220
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221 static const std::string t_name;
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222 std::string c_name;
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223 std::list<std::string> parent_list;
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224
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225 bool in_class_method (void);
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226 std::string get_current_method_class (void);
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227
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228 octave_value subsasgn_common (const octave_value& obj,
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229 const std::string& type,
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230 const std::list<octave_value_list>& idx,
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231 const octave_value& rhs);
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232
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233 int obsolete_copies;
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234
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235 public:
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236 // The list of field names and parent classes defines a class. We
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237 // keep track of each class that has been created so that we know
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238 class exemplar_info
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239 {
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240 public:
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241
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242 exemplar_info (void) : field_names (), parent_class_names () { }
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243
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244 exemplar_info (const octave_value& obj);
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245
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246 exemplar_info (const exemplar_info& x)
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247 : field_names (x.field_names),
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248 parent_class_names (x.parent_class_names) { }
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249
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250 exemplar_info& operator = (const exemplar_info& x)
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251 {
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252 if (&x != this)
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253 {
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254 field_names = x.field_names;
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255 parent_class_names = x.parent_class_names;
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256 }
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257 return *this;
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258 }
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259
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260 octave_idx_type nfields (void) const { return field_names.numel (); }
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261
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262 size_t nparents (void) const { return parent_class_names.size (); }
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263
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264 string_vector fields (void) const { return field_names; }
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265
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266 std::list<std::string> parents (void) const { return parent_class_names; }
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267
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268 bool compare (const octave_value& obj) const;
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269
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270 private:
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271
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272 string_vector field_names;
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273 std::list<std::string> parent_class_names;
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274 };
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275
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276 // A map from class names to lists of fields.
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277 static std::map<std::string, exemplar_info> exemplar_map;
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278
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279 typedef std::map<std::string, exemplar_info>::iterator
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280 exemplar_iterator;
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281 typedef std::map<std::string, exemplar_info>::const_iterator
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282 exemplar_const_iterator;
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283 };
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284
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285 #endif