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annotate src/oct-map.h @ 12212:f1ab2a12b4f4

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Add S_ISSOCK function to documentation.
author Rik <octave@nomad.inbox5.com>
date Sat, 29 Jan 2011 21:38:33 -0800
parents 7e856c31ffae
children 43cc49c7abd1
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1 /*
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2
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3 Copyright (C) 1994-2011 John W. Eaton
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4 Copyright (C) 2010 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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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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22 */
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23
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24 #if !defined (octave_oct_map_h)
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25 #define octave_oct_map_h 1
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26
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27 #include <algorithm>
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28 #include <map>
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29
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30 #include "Cell.h"
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31 #include "oct-obj.h"
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32
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33 class string_vector;
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34
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35 // A class holding a map field->index. Supports reference-counting.
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36 class OCTINTERP_API
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37 octave_fields
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38 {
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39 class fields_rep : public std::map<std::string, octave_idx_type>
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40 {
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41 public:
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42 fields_rep (void) : std::map<std::string, octave_idx_type> (), count (1) { }
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43 fields_rep (const fields_rep& other)
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44 : std::map<std::string, octave_idx_type> (other), count (1) { }
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45
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46 octave_refcount<int> count;
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47
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48 private:
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49 fields_rep& operator = (const fields_rep&); // no assignment!
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50 };
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51
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52 fields_rep *rep;
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53
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54 static fields_rep *nil_rep (void)
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55 {
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56 static fields_rep *nr = new fields_rep ();
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57 return nr;
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58 }
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59
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60 public:
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61
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62 octave_fields (void) : rep (nil_rep ()) { rep->count++; }
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63 octave_fields (const string_vector&);
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64 octave_fields (const char * const *);
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65
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66 ~octave_fields (void)
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67 {
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68 if (--rep->count == 0)
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69 delete rep;
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70 }
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71
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72 void make_unique (void)
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73 {
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74 if (rep->count > 1)
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75 {
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76 --rep->count;
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77 rep = new fields_rep (*rep);
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78 }
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79 }
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80
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81 octave_fields (const octave_fields& o) : rep (o.rep) { rep->count++; }
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82
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83 octave_fields&
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84 operator = (const octave_fields& o)
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85 {
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86 o.rep->count++;
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87 if (--rep->count == 0)
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88 delete rep;
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89 rep = o.rep;
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90
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91 return *this;
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92 }
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93
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94 // constant iteration support. non-const iteration intentionally unsupported.
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95
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96 typedef std::map<std::string, octave_idx_type>::const_iterator const_iterator;
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97 typedef const_iterator iterator;
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98
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99 const_iterator begin (void) const { return rep->begin (); }
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100 const_iterator end (void) const { return rep->end (); }
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101
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102 std::string key (const_iterator p) const { return p->first; }
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103 octave_idx_type index (const_iterator p) const { return p->second; }
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104
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105 const_iterator seek (const std::string& k) const
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106 { return rep->find (k); }
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107
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108 // high-level methods.
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109
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110 // number of fields.
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111 octave_idx_type nfields (void) const { return rep->size (); }
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112
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113 // check whether a field exists.
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114 bool isfield (const std::string& name) const;
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115
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116 // get index of field. return -1 if not exist
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117 octave_idx_type getfield (const std::string& name) const;
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118 // get index of field. add if not exist
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119 octave_idx_type getfield (const std::string& name);
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120 // remove field and return the index. -1 if didn't exist.
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121 octave_idx_type rmfield (const std::string& name);
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122
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123 // order the fields of this map. creates a permutation
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124 // used to order the fields.
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125 void orderfields (Array<octave_idx_type>& perm);
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126
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127 // compares two instances for equality up to order of fields.
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128 // returns a permutation needed to bring the fields of *other*
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129 // into the order of *this*.
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130 bool equal_up_to_order (const octave_fields& other,
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131 octave_idx_type* perm) const;
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132
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133 bool equal_up_to_order (const octave_fields& other,
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134 Array<octave_idx_type>& perm) const;
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135
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136 bool is_same (const octave_fields& other) const
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137 { return rep == other.rep; }
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138
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139 // Returns the fields as a vector of strings.
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140 string_vector fieldnames (void) const;
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141
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142 void clear (void)
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143 {
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144 *this = octave_fields ();
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145 }
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146 };
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147
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148
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149 class OCTINTERP_API
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150 octave_scalar_map
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151 {
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152 public:
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153
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154 octave_scalar_map (const octave_fields& k)
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155 : xkeys (k), xvals (k.nfields ()) { }
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156
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157 octave_scalar_map (void) : xkeys (), xvals () { }
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158
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159 octave_scalar_map (const string_vector& k)
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160 : xkeys (k), xvals (k.length ()) { }
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161
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162 octave_scalar_map (const octave_scalar_map& m)
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163 : xkeys (m.xkeys), xvals(m.xvals) { }
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164
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165 octave_scalar_map& operator = (const octave_scalar_map& m)
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166 {
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167 xkeys = m.xkeys;
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168 xvals = m.xvals;
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169
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170 return *this;
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171 }
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172
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173 // iteration support. note that both const and non-const iterators are the
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174 // same. The const/non-const distinction is made by the key & contents method.
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175 typedef octave_fields::const_iterator const_iterator;
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176 typedef const_iterator iterator;
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177
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178 const_iterator begin (void) const { return xkeys.begin (); }
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179 const_iterator end (void) const { return xkeys.end (); }
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180
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181 const_iterator seek (const std::string& k) const { return xkeys.seek (k); }
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182
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183 std::string key (const_iterator p) const
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184 { return xkeys.key (p); }
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185 octave_idx_type index (const_iterator p) const
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186 { return xkeys.index (p); }
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187
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188 const octave_value& contents (const_iterator p) const
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189 { return xvals[xkeys.index (p)]; }
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190
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191 octave_value& contents (iterator p)
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192 { return xvals[xkeys.index (p)]; }
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193
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194 const octave_value& contents (octave_idx_type i) const
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195 { return xvals[i]; }
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196
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197 octave_value& contents (octave_idx_type i)
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198 { return xvals[i]; }
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199
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200 // number of fields.
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201 octave_idx_type nfields (void) const { return xkeys.nfields (); }
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202
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203 // check whether a field exists.
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204 bool isfield (const std::string& name) const
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205 { return xkeys.isfield (name); }
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206
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207 bool contains (const std::string& name) const
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208 { return isfield (name); }
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209
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210 string_vector fieldnames (void) const
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211 { return xkeys.fieldnames (); }
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212
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213 string_vector keys (void) const
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214 { return fieldnames (); }
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215
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216 // get contents of a given field. empty value if not exist.
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217 octave_value getfield (const std::string& key) const;
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218
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219 // set contents of a given field. add if not exist.
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220 void setfield (const std::string& key, const octave_value& val);
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221 void assign (const std::string& k, const octave_value& val)
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222 { setfield (k, val); }
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223
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224 // remove a given field. do nothing if not exist.
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225 void rmfield (const std::string& key);
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226 void del (const std::string& k) { rmfield (k); }
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227
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228 // return a copy with fields ordered, optionally along with permutation.
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229 octave_scalar_map orderfields (void) const;
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230 octave_scalar_map orderfields (Array<octave_idx_type>& perm) const;
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231 octave_scalar_map orderfields (const octave_scalar_map& other,
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232 Array<octave_idx_type>& perm) const;
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233
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234 // aka getfield/setfield, but the latter returns a reference.
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235 octave_value contents (const std::string& k) const;
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236 octave_value& contents (const std::string& k);
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237
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238 void clear (void)
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239 {
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240 xkeys.clear ();
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241 xvals.clear ();
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242 }
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243
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244 friend class octave_map;
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245
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246 private:
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247
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248 octave_fields xkeys;
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249 std::vector<octave_value> xvals;
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250
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251 };
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252
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253 template<>
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254 inline octave_scalar_map octave_value_extract<octave_scalar_map> (const octave_value& v)
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255 { return v.scalar_map_value (); }
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256
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257 class OCTINTERP_API
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258 octave_map
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259 {
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260 public:
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261
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262 octave_map (const octave_fields& k)
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263 : xkeys (k), xvals (k.nfields ()), dimensions () { }
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264
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265 octave_map (const dim_vector& dv, const octave_fields& k)
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266 : xkeys (k), xvals (k.nfields (), Cell (dv)), dimensions (dv) { }
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267
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268 typedef octave_scalar_map element_type;
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269
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270 octave_map (void) : xkeys (), xvals (), dimensions () { }
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271
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272 octave_map (const dim_vector& dv) : xkeys (), xvals (), dimensions (dv) { }
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273
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274 octave_map (const string_vector& k)
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275 : xkeys (k), xvals (k.length (), Cell (1, 1)), dimensions (1, 1) { }
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276
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277 octave_map (const dim_vector& dv, const string_vector& k)
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278 : xkeys (k), xvals (k.length (), Cell (dv)), dimensions (dv) { }
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279
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280 octave_map (const octave_map& m)
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281 : xkeys (m.xkeys), xvals (m.xvals), dimensions (m.dimensions) { }
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282
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283 octave_map (const octave_scalar_map& m);
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284
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285 octave_map (const Octave_map& m);
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286
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287 octave_map& operator = (const octave_map& m)
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288 {
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289 xkeys = m.xkeys;
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290 xvals = m.xvals;
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291 dimensions = m.dimensions;
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292
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293 return *this;
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294 }
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295
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296 // iteration support. note that both const and non-const iterators are the
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297 // same. The const/non-const distinction is made by the key & contents method.
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298 typedef octave_fields::const_iterator const_iterator;
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299 typedef const_iterator iterator;
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300
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301 const_iterator begin (void) const { return xkeys.begin (); }
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302 const_iterator end (void) const { return xkeys.end (); }
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303
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304 const_iterator seek (const std::string& k) const { return xkeys.seek (k); }
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305
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306 std::string key (const_iterator p) const
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307 { return xkeys.key (p); }
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308 octave_idx_type index (const_iterator p) const
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309 { return xkeys.index (p); }
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310
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311 const Cell& contents (const_iterator p) const
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312 { return xvals[xkeys.index (p)]; }
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313
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314 Cell& contents (iterator p)
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315 { return xvals[xkeys.index (p)]; }
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316
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317 const Cell& contents (octave_idx_type i) const
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318 { return xvals[i]; }
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319
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320 Cell& contents (octave_idx_type i)
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321 { return xvals[i]; }
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322
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323 // number of fields.
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324 octave_idx_type nfields (void) const { return xkeys.nfields (); }
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325
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326 // check whether a field exists.
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327 bool isfield (const std::string& name) const
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328 { return xkeys.isfield (name); }
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329
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330 bool contains (const std::string& name) const
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331 { return isfield (name); }
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332
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333 string_vector fieldnames (void) const
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334 { return xkeys.fieldnames (); }
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335
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336 string_vector keys (void) const
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337 { return fieldnames (); }
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338
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339 // get contents of a given field. empty value if not exist.
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340 Cell getfield (const std::string& key) const;
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341
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342 // set contents of a given field. add if not exist. checks for
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343 // correct dimensions.
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344 void setfield (const std::string& key, const Cell& val);
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345 void assign (const std::string& k, const Cell& val)
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346 { setfield (k, val); }
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347
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348 // remove a given field. do nothing if not exist.
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349 void rmfield (const std::string& key);
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350 void del (const std::string& k) { rmfield (k); }
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351
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352 // return a copy with fields ordered, optionally along with permutation.
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353 octave_map orderfields (void) const;
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354 octave_map orderfields (Array<octave_idx_type>& perm) const;
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355 octave_map orderfields (const octave_map& other,
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356 Array<octave_idx_type>& perm) const;
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357
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358 // aka getfield/setfield, but the latter returns a reference.
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359 Cell contents (const std::string& k) const;
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360 Cell& contents (const std::string& k);
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361
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362 void clear (void)
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363 {
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364 xkeys.clear ();
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365 xvals.clear ();
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366 }
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367
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368 // The Array-like methods.
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369 octave_idx_type numel (void) const { return dimensions.numel (); }
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370 octave_idx_type length (void) const { return numel (); }
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371 bool is_empty (void) const { return dimensions.any_zero (); }
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372
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373 octave_idx_type rows (void) const { return dimensions(0); }
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374 octave_idx_type cols (void) const { return dimensions(1); }
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375 octave_idx_type columns (void) const { return dimensions(1); }
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376
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377 // Extract a scalar substructure.
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378 octave_scalar_map checkelem (octave_idx_type n) const;
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379 octave_scalar_map checkelem (octave_idx_type i, octave_idx_type j) const;
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380
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381 octave_scalar_map
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382 checkelem (const Array<octave_idx_type>& ra_idx) const;
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383
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384 octave_scalar_map operator () (octave_idx_type n) const
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385 { return checkelem (n); }
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386 octave_scalar_map operator () (octave_idx_type i, octave_idx_type j) const
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387 { return checkelem (i, j); }
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388
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389 octave_scalar_map
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390 operator () (const Array<octave_idx_type>& ra_idx) const
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391 { return checkelem (ra_idx); }
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392
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393 octave_map squeeze (void) const;
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394
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395 octave_map permute (const Array<int>& vec, bool inv = false) const;
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396
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397 dim_vector dims (void) const { return dimensions; }
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398
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399 int ndims (void) const { return dimensions.length (); }
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400
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401 octave_map transpose (void) const;
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402
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403 octave_map reshape (const dim_vector& dv) const;
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404
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405 void resize (const dim_vector& dv, bool fill = false);
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406
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407 static octave_map
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408 cat (int dim, octave_idx_type n, const octave_scalar_map *map_list);
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409
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410 static octave_map
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411 cat (int dim, octave_idx_type n, const octave_map *map_list);
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412
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413 octave_map index (const idx_vector& i, bool resize_ok = false) const;
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414
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415 octave_map index (const idx_vector& i, const idx_vector& j,
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416 bool resize_ok = false) const;
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417
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418 octave_map index (const Array<idx_vector>& ia,
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419 bool resize_ok = false) const;
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420
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421 octave_map index (const octave_value_list&, bool resize_ok = false) const;
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422
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423 octave_map column (octave_idx_type k) const;
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424 octave_map page (octave_idx_type k) const;
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425
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426 void assign (const idx_vector& i, const octave_map& rhs);
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427
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428 void assign (const idx_vector& i, const idx_vector& j, const octave_map& rhs);
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429
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430 void assign (const Array<idx_vector>& ia, const octave_map& rhs);
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431
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diff changeset
432 void assign (const octave_value_list&, const octave_map& rhs);
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433
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diff changeset
434 void assign (const octave_value_list& idx, const std::string& k,
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diff changeset
435 const Cell& rhs);
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diff changeset
436
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diff changeset
437 void delete_elements (const idx_vector& i);
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diff changeset
438
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diff changeset
439 void delete_elements (int dim, const idx_vector& i);
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diff changeset
440
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diff changeset
441 void delete_elements (const Array<idx_vector>& ia);
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diff changeset
442
604e13a89c7f initial code for structs rewrite
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diff changeset
443 void delete_elements (const octave_value_list&);
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diff changeset
444
604e13a89c7f initial code for structs rewrite
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diff changeset
445 octave_map concat (const octave_map& rb, const Array<octave_idx_type>& ra_idx);
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diff changeset
446
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diff changeset
447 // like checkelem, but no check.
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diff changeset
448 octave_scalar_map fast_elem_extract (octave_idx_type n) const;
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diff changeset
449
76079e505f9d optimize cellfun with uniform struct output
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diff changeset
450 // element assignment, no bounds check
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diff changeset
451 bool fast_elem_insert (octave_idx_type n, const octave_scalar_map& rhs);
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diff changeset
452
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diff changeset
453 private:
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454
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diff changeset
455 octave_fields xkeys;
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diff changeset
456 std::vector<Cell> xvals;
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diff changeset
457 dim_vector dimensions;
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458
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459 void optimize_dimensions (void);
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diff changeset
460 void extract_scalar (octave_scalar_map& dest,
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461 octave_idx_type index) const;
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462 static void do_cat (int dim, octave_idx_type n,
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diff changeset
463 const octave_scalar_map *map_list, octave_map& retval);
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464 static void do_cat (int dim, octave_idx_type n,
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465 const octave_map *map_list, octave_map& retval);
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466 };
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467
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diff changeset
468 template<>
1cc44f3ec814 templated extractors for maps and cells
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diff changeset
469 inline octave_map octave_value_extract<octave_map> (const octave_value& v)
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parents: 10756
diff changeset
470 { return v.map_value (); }
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diff changeset
471
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diff changeset
472 // The original Octave_map object. Octave_map and octave_map are convertible to
604e13a89c7f initial code for structs rewrite
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diff changeset
473 // each other.
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diff changeset
474
746
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parents:
diff changeset
475 class
6109
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parents: 6059
diff changeset
476 OCTINTERP_API
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diff changeset
477 Octave_map
746
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parents:
diff changeset
478 {
46f6f6a4f5c6 [project @ 1994-09-30 15:05:10 by jwe]
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479 public:
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diff changeset
480
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diff changeset
481 typedef std::map<std::string, Cell>::iterator iterator;
508238e65af7 [project @ 2003-09-19 21:40:57 by jwe]
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diff changeset
482 typedef std::map<std::string, Cell>::const_iterator const_iterator;
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diff changeset
483
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484 typedef std::list<std::string>::iterator key_list_iterator;
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diff changeset
485 typedef std::list<std::string>::const_iterator const_key_list_iterator;
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diff changeset
486
4744
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diff changeset
487 // Warning! You should always use at least two dimensions.
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diff changeset
488
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diff changeset
489 Octave_map (const dim_vector& dv = dim_vector (0, 0),
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diff changeset
490 const Cell& key_vals = Cell ());
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491
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diff changeset
492 Octave_map (const std::string& k, const octave_value& value)
5880
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493 : map (), key_list (), dimensions (1, 1)
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diff changeset
494 {
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diff changeset
495 map[k] = value;
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diff changeset
496 key_list.push_back (k);
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diff changeset
497 }
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diff changeset
498
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diff changeset
499 Octave_map (const string_vector& sv,
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diff changeset
500 const dim_vector& dv = dim_vector (0, 0))
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diff changeset
501 : map (), key_list (), dimensions (dv)
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diff changeset
502 {
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diff changeset
503 for (octave_idx_type i = 0; i < sv.length (); i++)
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diff changeset
504 {
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diff changeset
505 std::string k = sv[i];
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506 map[k] = Cell (dv);
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diff changeset
507 key_list.push_back (k);
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diff changeset
508 }
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diff changeset
509 }
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diff changeset
510
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diff changeset
511 Octave_map (const std::string& k, const Cell& vals)
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512 : map (), key_list (), dimensions (vals.dims ())
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diff changeset
513 {
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diff changeset
514 map[k] = vals;
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diff changeset
515 key_list.push_back (k);
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diff changeset
516 }
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517
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diff changeset
518 Octave_map (const std::string& k, const octave_value_list& val_list)
5880
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diff changeset
519 : map (), key_list (), dimensions (1, val_list.length ())
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diff changeset
520 {
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diff changeset
521 map[k] = val_list;
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diff changeset
522 key_list.push_back (k);
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diff changeset
523 }
4435
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diff changeset
524
5880
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diff changeset
525 Octave_map (const Octave_map& m)
84ca47e311b3 [project @ 2006-07-06 22:34:48 by jwe]
jwe
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diff changeset
526 : map (m.map), key_list (m.key_list), dimensions (m.dimensions) { }
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diff changeset
527
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diff changeset
528 Octave_map (const octave_map& m);
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diff changeset
529
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diff changeset
530 Octave_map& operator = (const Octave_map& m)
311981a9726d [project @ 2002-05-07 04:49:53 by jwe]
jwe
parents: 3523
diff changeset
531 {
311981a9726d [project @ 2002-05-07 04:49:53 by jwe]
jwe
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diff changeset
532 if (this != &m)
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parents: 10160
diff changeset
533 {
f3b65e1ae355 untabify src header files
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diff changeset
534 map = m.map;
f3b65e1ae355 untabify src header files
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diff changeset
535 key_list = m.key_list;
f3b65e1ae355 untabify src header files
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diff changeset
536 dimensions = m.dimensions;
f3b65e1ae355 untabify src header files
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diff changeset
537 }
4561
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diff changeset
538
3931
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diff changeset
539 return *this;
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parents: 3523
diff changeset
540 }
746
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diff changeset
541
46f6f6a4f5c6 [project @ 1994-09-30 15:05:10 by jwe]
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diff changeset
542 ~Octave_map (void) { }
1279
f146197d9d37 [project @ 1995-04-26 17:41:20 by jwe]
jwe
parents: 1009
diff changeset
543
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diff changeset
544 Octave_map squeeze (void) const;
7046
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dbateman
parents: 7017
diff changeset
545
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parents: 11523
diff changeset
546 Octave_map permute (const Array<int>& vec, bool inv = false) const;
7046
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dbateman
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diff changeset
547
3932
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parents: 3931
diff changeset
548 // This is the number of keys.
6639
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diff changeset
549 octave_idx_type nfields (void) const { return map.size (); }
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diff changeset
550
4587
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diff changeset
551 void del (const std::string& k)
4219
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diff changeset
552 {
4587
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diff changeset
553 iterator p = map.find (k);
5881
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diff changeset
554
4219
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diff changeset
555 if (p != map.end ())
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parents: 10160
diff changeset
556 {
f3b65e1ae355 untabify src header files
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parents: 10160
diff changeset
557 map.erase (p);
5880
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diff changeset
558
10313
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diff changeset
559 key_list_iterator q
f3b65e1ae355 untabify src header files
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diff changeset
560 = std::find (key_list.begin (), key_list.end (), k);
5881
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diff changeset
561
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diff changeset
562 assert (q != key_list.end ());
5881
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diff changeset
563
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diff changeset
564 key_list.erase (q);
f3b65e1ae355 untabify src header files
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parents: 10160
diff changeset
565 }
4219
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diff changeset
566 }
3931
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parents: 3523
diff changeset
567
4219
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diff changeset
568 iterator begin (void) { return iterator (map.begin ()); }
23d06c9e1edd [project @ 2002-12-06 21:29:17 by jwe]
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parents: 4200
diff changeset
569 const_iterator begin (void) const { return const_iterator (map.begin ()); }
23d06c9e1edd [project @ 2002-12-06 21:29:17 by jwe]
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parents: 4200
diff changeset
570
23d06c9e1edd [project @ 2002-12-06 21:29:17 by jwe]
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parents: 4200
diff changeset
571 iterator end (void) { return iterator (map.end ()); }
23d06c9e1edd [project @ 2002-12-06 21:29:17 by jwe]
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parents: 4200
diff changeset
572 const_iterator end (void) const { return const_iterator (map.end ()); }
3931
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parents: 3523
diff changeset
573
4219
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parents: 4200
diff changeset
574 std::string key (const_iterator p) const { return p->first; }
3931
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parents: 3523
diff changeset
575
5328
322ab0da00f8 [project @ 2005-05-02 10:48:43 by jwe]
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parents: 5307
diff changeset
576 Cell& contents (const std::string& k);
4675
f6d6335c08f6 [project @ 2003-12-16 05:11:26 by jwe]
jwe
parents: 4587
diff changeset
577 Cell contents (const std::string& k) const;
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578
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579 Cell& contents (iterator p)
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580 { return p->second; }
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581
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582 Cell contents (const_iterator p) const
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583 { return p->second; }
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584
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585 int intfield (const std::string& k, int def_val = 0) const;
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586
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587 std::string stringfield (const std::string& k,
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588 const std::string& def_val = std::string ()) const;
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589
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590 iterator seek (const std::string& k) { return map.find (k); }
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591 const_iterator seek (const std::string& k) const { return map.find (k); }
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592
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593 bool contains (const std::string& k) const
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594 { return (seek (k) != map.end ()); }
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595
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596 void clear (void)
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597 {
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598 map.clear ();
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599 key_list.clear ();
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600 }
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601
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602 string_vector keys (void) const;
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603
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604 octave_idx_type rows (void) const { return dimensions(0); }
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605
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606 octave_idx_type columns (void) const { return dimensions(1); }
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607
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608 dim_vector dims (void) const { return dimensions; }
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609
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610 int ndims (void) const { return dimensions.length (); }
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611
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612 Octave_map transpose (void) const;
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613
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614 Octave_map reshape (const dim_vector& new_dims) const;
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615
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616 void resize (const dim_vector& dv, bool fill = false);
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617
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618 octave_idx_type numel (void) const { return dimensions.numel (); }
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619
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620 Octave_map concat (const Octave_map& rb, const Array<octave_idx_type>& ra_idx);
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621
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622 Octave_map& maybe_delete_elements (const octave_value_list& idx);
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623
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624 Octave_map& assign (const octave_value_list& idx, const Octave_map& rhs);
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625
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626 Octave_map& assign (const octave_value_list& idx, const std::string& k,
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627 const Cell& rhs);
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628
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629 Octave_map& assign (const std::string& k, const octave_value& rhs);
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630
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631 Octave_map& assign (const std::string& k, const Cell& rhs);
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632
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633 Octave_map index (const octave_value_list& idx,
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634 bool resize_ok = false) const;
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635
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636 private:
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637
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638 // The map of names to values.
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639 std::map<std::string, Cell> map;
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640
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641 // An extra list of keys, so we can keep track of the order the keys
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642 // are added for compatibility with you know what.
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643 std::list<std::string> key_list;
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644
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645 // The current size.
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646 mutable dim_vector dimensions;
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647
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648 void maybe_add_to_key_list (const std::string& k)
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649 {
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650 if (! contains (k))
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651 key_list.push_back (k);
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652 }
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653 };
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654
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655 #endif