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1 // Template array classes |
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2 /* |
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3 |
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4 Copyright (C) 1996, 1997 John W. Eaton |
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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 2, or (at your option) any |
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11 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, write to the Free |
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20 Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
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21 02110-1301, USA. |
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22 |
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23 */ |
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24 |
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25 #if !defined (octave_Array_h) |
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26 #define octave_Array_h 1 |
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27 |
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28 #include <cassert> |
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29 #include <cstddef> |
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30 |
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31 #include <iostream> |
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32 |
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33 #include "dim-vector.h" |
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34 #include "lo-utils.h" |
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35 |
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36 class idx_vector; |
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37 |
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38 // One dimensional array class. Handles the reference counting for |
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39 // all the derived classes. |
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40 |
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41 template <class T> |
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42 T |
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43 resize_fill_value (const T& x) |
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44 { |
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45 return x; |
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46 } |
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47 |
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48 template <class T> |
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49 class |
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50 Array |
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51 { |
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52 protected: |
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53 |
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54 //-------------------------------------------------------------------- |
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55 // The real representation of all arrays. |
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56 //-------------------------------------------------------------------- |
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57 |
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58 class ArrayRep |
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59 { |
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60 public: |
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61 |
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62 T *data; |
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63 octave_idx_type len; |
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64 int count; |
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65 |
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66 ArrayRep (T *d, octave_idx_type l) : data (d), len (l), count (1) { } |
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67 |
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68 ArrayRep (void) : data (0), len (0), count (1) { } |
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69 |
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70 explicit ArrayRep (octave_idx_type n) : data (new T [n]), len (n), count (1) { } |
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71 |
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72 explicit ArrayRep (octave_idx_type n, const T& val) |
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73 : data (new T [n]), len (n), count (1) |
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74 { |
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75 fill (val); |
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76 } |
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77 |
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78 ArrayRep (const ArrayRep& a) |
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79 : data (new T [a.len]), len (a.len), count (1) |
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80 { |
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81 for (octave_idx_type i = 0; i < len; i++) |
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82 data[i] = a.data[i]; |
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83 } |
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84 |
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85 ~ArrayRep (void) { delete [] data; } |
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86 |
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87 octave_idx_type length (void) const { return len; } |
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88 |
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89 void fill (const T& val) |
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90 { |
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91 for (octave_idx_type i = 0; i < len; i++) |
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92 data[i] = val; |
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93 } |
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94 |
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95 T& elem (octave_idx_type n) { return data[n]; } |
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96 |
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97 T elem (octave_idx_type n) const { return data[n]; } |
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98 |
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99 void qsort (int (*compare) (const void *, const void *)) |
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100 { |
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101 octave_qsort (data, static_cast<size_t> (len), sizeof (T), compare); |
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102 } |
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103 |
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104 private: |
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105 |
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106 // No assignment! |
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107 |
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108 ArrayRep& operator = (const ArrayRep& a); |
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109 }; |
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110 |
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111 //-------------------------------------------------------------------- |
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112 |
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113 void make_unique (void) |
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114 { |
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115 if (rep->count > 1) |
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116 { |
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117 --rep->count; |
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118 rep = new ArrayRep (*rep); |
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119 } |
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120 } |
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121 |
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122 void make_unique (const T& val) |
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123 { |
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124 if (rep->count > 1) |
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125 { |
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126 --rep->count; |
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127 rep = new ArrayRep (rep->length (), val); |
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128 } |
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129 else |
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130 rep->fill (val); |
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131 } |
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132 |
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133 public: |
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134 |
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135 // !!! WARNING !!! -- these should be protected, not public. You |
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136 // should not access these data members directly! |
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137 |
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138 typename Array<T>::ArrayRep *rep; |
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139 |
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140 dim_vector dimensions; |
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141 |
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142 protected: |
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143 |
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144 idx_vector *idx; |
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145 int idx_count; |
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146 |
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147 Array (T *d, octave_idx_type n) |
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148 : rep (new typename Array<T>::ArrayRep (d, n)), dimensions (n), |
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149 idx (0), idx_count (0) { } |
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150 |
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151 Array (T *d, const dim_vector& dv) |
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152 : rep (new typename Array<T>::ArrayRep (d, get_size (dv))), |
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153 dimensions (dv), idx (0), idx_count (0) { } |
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154 |
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155 private: |
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156 |
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157 typename Array<T>::ArrayRep *nil_rep (void) const |
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158 { |
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159 static typename Array<T>::ArrayRep *nr |
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160 = new typename Array<T>::ArrayRep (); |
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161 |
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162 return nr; |
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163 } |
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164 |
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165 template <class U> |
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166 T * |
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167 coerce (const U *a, int len) |
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168 { |
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169 T *retval = new T [len]; |
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170 |
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171 for (int i = 0; i < len; i++) |
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172 retval[i] = T (a[i]); |
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173 |
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174 return retval; |
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175 } |
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176 |
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177 public: |
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238
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178 |
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179 Array (void) |
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180 : rep (nil_rep ()), dimensions (), |
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181 idx (0), idx_count (0) { rep->count++; } |
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182 |
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183 explicit Array (octave_idx_type n) |
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184 : rep (new typename Array<T>::ArrayRep (n)), dimensions (n), |
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185 idx (0), idx_count (0) { } |
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186 |
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187 explicit Array (octave_idx_type n, const T& val) |
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188 : rep (new typename Array<T>::ArrayRep (n)), dimensions (n), |
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189 idx (0), idx_count (0) |
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190 { |
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191 fill (val); |
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192 } |
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193 |
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194 // Type conversion case. |
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195 template <class U> |
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196 Array (const Array<U>& a) |
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197 : rep (new typename Array<T>::ArrayRep (coerce (a.data (), a.length ()), a.length ())), |
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198 dimensions (a.dimensions), idx (0), idx_count (0) |
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199 { |
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200 } |
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201 |
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202 // No type conversion case. |
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203 Array (const Array<T>& a) |
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204 : rep (a.rep), dimensions (a.dimensions), idx (0), idx_count (0) |
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205 { |
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206 rep->count++; |
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207 } |
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208 |
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209 public: |
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210 |
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211 Array (const dim_vector& dv) |
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212 : rep (new typename Array<T>::ArrayRep (get_size (dv))), |
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213 dimensions (dv), idx (0), idx_count (0) { } |
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214 |
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215 Array (const dim_vector& dv, const T& val) |
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216 : rep (new typename Array<T>::ArrayRep (get_size (dv))), |
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217 dimensions (dv), idx (0), idx_count (0) |
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218 { |
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219 fill (val); |
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220 } |
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221 |
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222 Array (const Array<T>& a, const dim_vector& dv); |
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223 |
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224 virtual ~Array (void); |
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225 |
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226 Array<T>& operator = (const Array<T>& a) |
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227 { |
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228 if (this != &a) |
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229 { |
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230 if (--rep->count <= 0) |
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231 delete rep; |
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232 |
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233 rep = a.rep; |
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234 rep->count++; |
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235 |
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236 dimensions = a.dimensions; |
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237 } |
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238 |
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239 idx_count = 0; |
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240 idx = 0; |
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241 |
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242 return *this; |
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243 } |
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244 |
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245 void fill (const T& val) { make_unique (val); } |
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238
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246 |
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247 octave_idx_type capacity (void) const { return rep->length (); } |
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248 octave_idx_type length (void) const { return capacity (); } |
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249 octave_idx_type nelem (void) const { return capacity (); } |
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250 octave_idx_type numel (void) const { return nelem (); } |
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251 |
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252 octave_idx_type dim1 (void) const { return dimensions(0); } |
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253 octave_idx_type dim2 (void) const { return dimensions(1); } |
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254 octave_idx_type dim3 (void) const { return dimensions(2); } |
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255 |
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256 octave_idx_type rows (void) const { return dim1 (); } |
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257 octave_idx_type cols (void) const { return dim2 (); } |
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258 octave_idx_type columns (void) const { return dim2 (); } |
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259 octave_idx_type pages (void) const { return dim3 (); } |
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260 |
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261 size_t byte_size (void) const { return numel () * sizeof (T); } |
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262 |
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263 dim_vector dims (void) const { return dimensions; } |
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264 |
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265 Array<T> squeeze (void) const; |
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266 |
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267 void chop_trailing_singletons (void) |
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268 { dimensions.chop_trailing_singletons (); } |
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269 |
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270 static octave_idx_type get_size (octave_idx_type r, octave_idx_type c); |
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271 static octave_idx_type get_size (octave_idx_type r, octave_idx_type c, octave_idx_type p); |
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272 static octave_idx_type get_size (const dim_vector& dv); |
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273 |
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274 octave_idx_type compute_index (const Array<octave_idx_type>& ra_idx) const; |
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275 |
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276 T range_error (const char *fcn, octave_idx_type n) const; |
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277 T& range_error (const char *fcn, octave_idx_type n); |
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278 |
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279 T range_error (const char *fcn, octave_idx_type i, octave_idx_type j) const; |
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280 T& range_error (const char *fcn, octave_idx_type i, octave_idx_type j); |
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281 |
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282 T range_error (const char *fcn, octave_idx_type i, octave_idx_type j, octave_idx_type k) const; |
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283 T& range_error (const char *fcn, octave_idx_type i, octave_idx_type j, octave_idx_type k); |
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284 |
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285 T range_error (const char *fcn, const Array<int>& ra_idx) const; |
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286 T& range_error (const char *fcn, const Array<int>& ra_idx); |
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287 |
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288 // No checking, even for multiple references, ever. |
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289 |
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290 T& xelem (octave_idx_type n) { return rep->elem (n); } |
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291 T xelem (octave_idx_type n) const { return rep->elem (n); } |
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292 |
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293 T& xelem (octave_idx_type i, octave_idx_type j) { return xelem (dim1()*j+i); } |
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294 T xelem (octave_idx_type i, octave_idx_type j) const { return xelem (dim1()*j+i); } |
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295 |
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296 T& xelem (octave_idx_type i, octave_idx_type j, octave_idx_type k) { return xelem (i, dim2()*k+j); } |
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297 T xelem (octave_idx_type i, octave_idx_type j, octave_idx_type k) const { return xelem (i, dim2()*k+j); } |
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298 |
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299 T& xelem (const Array<int>& ra_idx) |
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300 { return xelem (compute_index (ra_idx)); } |
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301 |
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302 T xelem (const Array<int>& ra_idx) const |
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303 { return xelem (compute_index (ra_idx)); } |
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304 |
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305 // XXX FIXME XXX -- would be nice to fix this so that we don't |
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306 // unnecessarily force a copy, but that is not so easy, and I see no |
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307 // clean way to do it. |
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308 |
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309 T& checkelem (octave_idx_type n) |
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310 { |
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311 if (n < 0 || n >= rep->length ()) |
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312 return range_error ("T& Array<T>::checkelem", n); |
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313 else |
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314 { |
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315 make_unique (); |
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316 return xelem (n); |
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317 } |
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2006
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318 } |
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319 |
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320 T& checkelem (octave_idx_type i, octave_idx_type j) |
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321 { |
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322 if (i < 0 || j < 0 || i >= dim1 () || j >= dim2 ()) |
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323 return range_error ("T& Array<T>::checkelem", i, j); |
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324 else |
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325 return elem (dim1()*j+i); |
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326 } |
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327 |
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328 T& checkelem (octave_idx_type i, octave_idx_type j, octave_idx_type k) |
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329 { |
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330 if (i < 0 || j < 0 || k < 0 || i >= dim1 () || j >= dim2 () || k >= dim3 ()) |
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331 return range_error ("T& Array<T>::checkelem", i, j, k); |
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332 else |
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333 return elem (i, dim2()*k+j); |
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334 } |
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335 |
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336 T& checkelem (const Array<int>& ra_idx) |
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337 { |
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338 octave_idx_type i = compute_index (ra_idx); |
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339 |
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340 if (i < 0) |
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341 return range_error ("T& Array<T>::checkelem", ra_idx); |
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342 else |
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343 return elem (i); |
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344 } |
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345 |
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346 T& elem (octave_idx_type n) |
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347 { |
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348 make_unique (); |
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349 return xelem (n); |
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350 } |
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351 |
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352 T& elem (octave_idx_type i, octave_idx_type j) { return elem (dim1()*j+i); } |
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353 |
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354 T& elem (octave_idx_type i, octave_idx_type j, octave_idx_type k) { return elem (i, dim2()*k+j); } |
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355 |
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356 T& elem (const Array<int>& ra_idx) |
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357 { return Array<T>::elem (compute_index (ra_idx)); } |
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358 |
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359 #if defined (BOUNDS_CHECKING) |
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360 T& operator () (octave_idx_type n) { return checkelem (n); } |
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361 T& operator () (octave_idx_type i, octave_idx_type j) { return checkelem (i, j); } |
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362 T& operator () (octave_idx_type i, octave_idx_type j, octave_idx_type k) { return checkelem (i, j, k); } |
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363 T& operator () (const Array<int>& ra_idx) { return checkelem (ra_idx); } |
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364 #else |
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365 T& operator () (octave_idx_type n) { return elem (n); } |
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366 T& operator () (octave_idx_type i, octave_idx_type j) { return elem (i, j); } |
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367 T& operator () (octave_idx_type i, octave_idx_type j, octave_idx_type k) { return elem (i, j, k); } |
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368 T& operator () (const Array<int>& ra_idx) { return elem (ra_idx); } |
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369 #endif |
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370 |
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371 T checkelem (octave_idx_type n) const |
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372 { |
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373 if (n < 0 || n >= rep->length ()) |
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374 return range_error ("T Array<T>::checkelem", n); |
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2049
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375 else |
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376 return xelem (n); |
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2006
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377 } |
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378 |
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379 T checkelem (octave_idx_type i, octave_idx_type j) const |
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380 { |
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381 if (i < 0 || j < 0 || i >= dim1 () || j >= dim2 ()) |
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382 return range_error ("T Array<T>::checkelem", i, j); |
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383 else |
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384 return elem (dim1()*j+i); |
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385 } |
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386 |
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5275
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387 T checkelem (octave_idx_type i, octave_idx_type j, octave_idx_type k) const |
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4513
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388 { |
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389 if (i < 0 || j < 0 || k < 0 || i >= dim1 () || j >= dim2 () || k >= dim3 ()) |
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390 return range_error ("T Array<T>::checkelem", i, j, k); |
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391 else |
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392 return Array<T>::elem (i, Array<T>::dim1()*k+j); |
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393 } |
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394 |
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395 T checkelem (const Array<int>& ra_idx) const |
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396 { |
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5275
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397 octave_idx_type i = compute_index (ra_idx); |
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4513
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398 |
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399 if (i < 0) |
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400 return range_error ("T Array<T>::checkelem", ra_idx); |
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401 else |
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402 return Array<T>::elem (i); |
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403 } |
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404 |
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5275
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405 T elem (octave_idx_type n) const { return xelem (n); } |
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2306
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406 |
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5275
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407 T elem (octave_idx_type i, octave_idx_type j) const { return elem (dim1()*j+i); } |
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4513
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408 |
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5275
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409 T elem (octave_idx_type i, octave_idx_type j, octave_idx_type k) const { return elem (i, dim2()*k+j); } |
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4513
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410 |
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411 T elem (const Array<int>& ra_idx) const |
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|
412 { return Array<T>::elem (compute_index (ra_idx)); } |
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413 |
|
2108
|
414 #if defined (BOUNDS_CHECKING) |
|
5275
|
415 T operator () (octave_idx_type n) const { return checkelem (n); } |
|
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416 T operator () (octave_idx_type i, octave_idx_type j) const { return checkelem (i, j); } |
|
|
417 T operator () (octave_idx_type i, octave_idx_type j, octave_idx_type k) const { return checkelem (i, j, k); } |
|
4513
|
418 T operator () (const Array<int>& ra_idx) const { return checkelem (ra_idx); } |
|
2006
|
419 #else |
|
5275
|
420 T operator () (octave_idx_type n) const { return elem (n); } |
|
|
421 T operator () (octave_idx_type i, octave_idx_type j) const { return elem (i, j); } |
|
|
422 T operator () (octave_idx_type i, octave_idx_type j, octave_idx_type k) const { return elem (i, j, k); } |
|
4513
|
423 T operator () (const Array<int>& ra_idx) const { return elem (ra_idx); } |
|
2006
|
424 #endif |
|
|
425 |
|
4567
|
426 Array<T> reshape (const dim_vector& new_dims) const; |
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|
427 |
|
5275
|
428 Array<T> permute (const Array<octave_idx_type>& vec, bool inv = false) const; |
|
|
429 Array<T> ipermute (const Array<octave_idx_type>& vec) const |
|
4593
|
430 { return permute (vec, true); } |
|
|
431 |
|
5275
|
432 void resize_no_fill (octave_idx_type n); |
|
|
433 void resize_and_fill (octave_idx_type n, const T& val); |
|
4548
|
434 |
|
4518
|
435 // !!! WARNING !!! -- the following resize_no_fill and |
|
|
436 // resize_and_fill functions are public because template friends |
|
|
437 // don't work properly with versions of gcc earlier than 3.3. You |
|
|
438 // should use these functions only in classes that are derived |
|
|
439 // from Array<T>. |
|
|
440 |
|
|
441 // protected: |
|
4513
|
442 |
|
5275
|
443 void resize_no_fill (octave_idx_type r, octave_idx_type c); |
|
|
444 void resize_and_fill (octave_idx_type r, octave_idx_type c, const T& val); |
|
4513
|
445 |
|
5275
|
446 void resize_no_fill (octave_idx_type r, octave_idx_type c, octave_idx_type p); |
|
|
447 void resize_and_fill (octave_idx_type r, octave_idx_type c, octave_idx_type p, const T& val); |
|
4513
|
448 |
|
4587
|
449 void resize_no_fill (const dim_vector& dv); |
|
|
450 void resize_and_fill (const dim_vector& dv, const T& val); |
|
4513
|
451 |
|
|
452 public: |
|
|
453 |
|
5392
|
454 void resize (octave_idx_type n) { resize_no_fill (n); } |
|
4513
|
455 |
|
5392
|
456 void resize (octave_idx_type n, const T& val) { resize_and_fill (n, val); } |
|
4513
|
457 |
|
4587
|
458 void resize (const dim_vector& dv) { resize_no_fill (dv); } |
|
4513
|
459 |
|
4587
|
460 void resize (const dim_vector& dv, const T& val) |
|
|
461 { resize_and_fill (dv, val); } |
|
4513
|
462 |
|
5275
|
463 Array<T>& insert (const Array<T>& a, octave_idx_type r, octave_idx_type c); |
|
|
464 Array<T>& insert2 (const Array<T>& a, octave_idx_type r, octave_idx_type c); |
|
|
465 Array<T>& insertN (const Array<T>& a, octave_idx_type r, octave_idx_type c); |
|
4513
|
466 |
|
5275
|
467 Array<T>& insert (const Array<T>& a, const Array<octave_idx_type>& idx); |
|
4513
|
468 |
|
|
469 bool is_square (void) const { return (dim1 () == dim2 ()); } |
|
|
470 |
|
4559
|
471 bool is_empty (void) const { return numel () == 0; } |
|
|
472 |
|
4513
|
473 Array<T> transpose (void) const; |
|
238
|
474 |
|
1550
|
475 const T *data (void) const { return rep->data; } |
|
228
|
476 |
|
3952
|
477 const T *fortran_vec (void) const { return data (); } |
|
|
478 |
|
238
|
479 T *fortran_vec (void); |
|
1560
|
480 |
|
1781
|
481 Array<T>& qsort (int (*compare) (const void *, const void *)) |
|
1756
|
482 { |
|
2347
|
483 make_unique (); |
|
1756
|
484 |
|
|
485 rep->qsort (compare); |
|
1781
|
486 |
|
|
487 return *this; |
|
1756
|
488 } |
|
|
489 |
|
4513
|
490 int ndims (void) const { return dimensions.length (); } |
|
1560
|
491 |
|
4517
|
492 void maybe_delete_dims (void); |
|
|
493 |
|
1619
|
494 void clear_index (void); |
|
1560
|
495 |
|
1619
|
496 void set_index (const idx_vector& i); |
|
1560
|
497 |
|
1619
|
498 int index_count (void) const { return idx_count; } |
|
1560
|
499 |
|
1619
|
500 idx_vector *get_idx (void) const { return idx; } |
|
1560
|
501 |
|
|
502 void maybe_delete_elements (idx_vector& i); |
|
|
503 |
|
4513
|
504 void maybe_delete_elements_1 (idx_vector& i); |
|
|
505 |
|
|
506 void maybe_delete_elements_2 (idx_vector& i); |
|
|
507 |
|
|
508 void maybe_delete_elements (idx_vector& i, idx_vector& j); |
|
|
509 |
|
|
510 void maybe_delete_elements (idx_vector& i, idx_vector& j, idx_vector& k); |
|
|
511 |
|
|
512 void maybe_delete_elements (Array<idx_vector>& ra_idx, const T& rfv); |
|
|
513 |
|
1560
|
514 Array<T> value (void); |
|
2382
|
515 |
|
3933
|
516 Array<T> index (idx_vector& i, int resize_ok = 0, |
|
4459
|
517 const T& rfv = resize_fill_value (T ())) const; |
|
3933
|
518 |
|
4513
|
519 Array<T> index1 (idx_vector& i, int resize_ok = 0, |
|
|
520 const T& rfv = resize_fill_value (T ())) const; |
|
|
521 |
|
|
522 Array<T> index2 (idx_vector& i, int resize_ok = 0, |
|
|
523 const T& rfv = resize_fill_value (T ())) const; |
|
|
524 |
|
4530
|
525 Array<T> indexN (idx_vector& i, int resize_ok = 0, |
|
|
526 const T& rfv = resize_fill_value (T ())) const; |
|
|
527 |
|
4513
|
528 Array<T> index (idx_vector& i, idx_vector& j, int resize_ok = 0, |
|
|
529 const T& rfv = resize_fill_value (T ())) const; |
|
|
530 |
|
|
531 Array<T> index (Array<idx_vector>& ra_idx, int resize_ok = 0, |
|
|
532 const T& rfv = resize_fill_value (T ())) const; |
|
3928
|
533 |
|
4459
|
534 // static T resize_fill_value (void) { return T (); } |
|
3933
|
535 |
|
4517
|
536 void print_info (std::ostream& os, const std::string& prefix) const; |
|
4513
|
537 }; |
|
4459
|
538 |
|
4518
|
539 // NOTE: these functions should be friends of the Array<T> class and |
|
|
540 // Array<T>::dimensions should be protected, not public, but we can't |
|
|
541 // do that because of bugs in gcc prior to 3.3. |
|
|
542 |
|
|
543 template <class LT, class RT> |
|
|
544 /* friend */ int |
|
|
545 assign (Array<LT>& lhs, const Array<RT>& rhs, const LT& rfv); |
|
|
546 |
|
|
547 template <class LT, class RT> |
|
|
548 /* friend */ int |
|
|
549 assign1 (Array<LT>& lhs, const Array<RT>& rhs, const LT& rfv); |
|
|
550 |
|
|
551 template <class LT, class RT> |
|
|
552 /* friend */ int |
|
|
553 assign2 (Array<LT>& lhs, const Array<RT>& rhs, const LT& rfv); |
|
|
554 |
|
|
555 template <class LT, class RT> |
|
|
556 /* friend */ int |
|
|
557 assignN (Array<LT>& lhs, const Array<RT>& rhs, const LT& rfv); |
|
|
558 |
|
3836
|
559 template <class LT, class RT> |
|
|
560 int |
|
|
561 assign (Array<LT>& lhs, const Array<RT>& rhs) |
|
|
562 { |
|
4459
|
563 return assign (lhs, rhs, resize_fill_value (LT ())); |
|
3836
|
564 } |
|
1560
|
565 |
|
4594
|
566 #define INSTANTIATE_ARRAY_ASSIGN(LT, RT) \ |
|
|
567 template int assign (Array<LT>&, const Array<RT>&, const LT&); \ |
|
|
568 template int assign1 (Array<LT>&, const Array<RT>&, const LT&); \ |
|
|
569 template int assign2 (Array<LT>&, const Array<RT>&, const LT&); \ |
|
|
570 template int assignN (Array<LT>&, const Array<RT>&, const LT&); \ |
|
|
571 template int assign (Array<LT>&, const Array<RT>&) |
|
|
572 |
|
4762
|
573 |
|
4594
|
574 #define INSTANTIATE_ARRAY(T) \ |
|
|
575 template class Array<T>; \ |
|
4762
|
576 template T resize_fill_value (const T&); \ |
|
|
577 |
|
4594
|
578 #define INSTANTIATE_ARRAY_AND_ASSIGN(T) \ |
|
|
579 INSTANTIATE_ARRAY (T); \ |
|
|
580 INSTANTIATE_ARRAY_ASSIGN (T, T) |
|
|
581 |
|
228
|
582 #endif |
|
|
583 |
|
|
584 /* |
|
|
585 ;;; Local Variables: *** |
|
|
586 ;;; mode: C++ *** |
|
|
587 ;;; End: *** |
|
|
588 */ |
