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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, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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21 |
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22 */ |
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23 |
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24 #if defined (__GNUG__) && defined (USE_PRAGMA_INTERFACE_IMPLEMENTATION) |
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25 #pragma implementation |
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26 #endif |
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27 |
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28 #ifdef HAVE_CONFIG_H |
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29 #include <config.h> |
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30 #endif |
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31 |
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32 #include <cassert> |
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33 |
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34 #include <iostream> |
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35 |
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36 #include "Array.h" |
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37 |
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38 #if defined (HEAVYWEIGHT_INDEXING) |
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39 #include "idx-vector.h" |
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40 #include "Array-idx.h" |
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41 #endif |
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42 |
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43 #include "lo-error.h" |
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44 |
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45 // One dimensional array class. Handles the reference counting for |
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46 // all the derived classes. |
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47 |
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48 template <class T> |
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49 Array<T>::Array (int n, const T& val) |
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50 { |
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51 rep = new typename Array<T>::ArrayRep (n); |
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52 |
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53 for (int i = 0; i < n; i++) |
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54 rep->data[i] = val; |
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55 |
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56 #ifdef HEAVYWEIGHT_INDEXING |
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57 max_indices = 1; |
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58 idx_count = 0; |
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59 idx = 0; |
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60 #endif |
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61 } |
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62 |
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63 template <class T> |
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64 Array<T>::~Array (void) |
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65 { |
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66 if (--rep->count <= 0) |
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67 delete rep; |
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68 |
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69 #ifdef HEAVYWEIGHT_INDEXING |
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70 delete [] idx; |
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71 #endif |
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72 } |
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73 |
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74 template <class T> |
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75 Array<T>& |
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76 Array<T>::operator = (const Array<T>& a) |
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77 { |
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78 if (this != &a && rep != a.rep) |
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79 { |
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80 if (--rep->count <= 0) |
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81 delete rep; |
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82 |
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83 rep = a.rep; |
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84 rep->count++; |
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85 } |
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86 |
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87 #ifdef HEAVYWEIGHT_INDEXING |
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88 idx_count = 0; |
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89 idx = 0; |
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90 #endif |
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91 |
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92 return *this; |
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93 } |
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94 |
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95 template <class T> |
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96 void |
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97 Array<T>::resize (int n) |
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98 { |
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99 if (n < 0) |
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100 { |
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101 (*current_liboctave_error_handler) ("can't resize to negative dimension"); |
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102 return; |
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103 } |
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104 |
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105 if (n == length ()) |
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106 return; |
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107 |
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108 typename Array<T>::ArrayRep *old_rep = rep; |
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109 const T *old_data = data (); |
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110 int old_len = length (); |
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111 |
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112 rep = new typename Array<T>::ArrayRep (n); |
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113 |
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114 if (old_data && old_len > 0) |
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115 { |
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116 int min_len = old_len < n ? old_len : n; |
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117 |
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118 for (int i = 0; i < min_len; i++) |
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119 xelem (i) = old_data[i]; |
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120 } |
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121 |
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122 if (--old_rep->count <= 0) |
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123 delete old_rep; |
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124 } |
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125 |
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126 template <class T> |
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127 void |
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128 Array<T>::resize (int n, const T& val) |
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129 { |
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130 if (n < 0) |
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131 { |
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132 (*current_liboctave_error_handler) ("can't resize to negative dimension"); |
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133 return; |
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134 } |
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135 |
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136 if (n == length ()) |
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137 return; |
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138 |
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139 typename Array<T>::ArrayRep *old_rep = rep; |
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140 const T *old_data = data (); |
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141 int old_len = length (); |
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142 |
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143 rep = new typename Array<T>::ArrayRep (n); |
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144 |
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145 int min_len = old_len < n ? old_len : n; |
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146 |
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147 if (old_data && old_len > 0) |
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148 { |
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149 for (int i = 0; i < min_len; i++) |
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150 xelem (i) = old_data[i]; |
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151 } |
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152 |
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153 for (int i = old_len; i < n; i++) |
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154 xelem (i) = val; |
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155 |
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156 if (--old_rep->count <= 0) |
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157 delete old_rep; |
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158 } |
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159 |
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160 template <class T> |
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161 T * |
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162 Array<T>::fortran_vec (void) |
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163 { |
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164 if (rep->count > 1) |
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165 { |
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166 --rep->count; |
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167 rep = new typename Array<T>::ArrayRep (*rep); |
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168 } |
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169 return rep->data; |
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170 } |
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171 template <class T> |
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172 T |
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173 Array<T>::range_error (const char *fcn, int n) const |
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174 { |
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175 (*current_liboctave_error_handler) ("%s (%d): range error", fcn, n); |
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176 return T (); |
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177 } |
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178 |
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179 template <class T> |
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180 T& |
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181 Array<T>::range_error (const char *fcn, int n) |
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182 { |
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183 (*current_liboctave_error_handler) ("%s (%d): range error", fcn, n); |
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184 static T foo; |
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185 return foo; |
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186 } |
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187 |
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188 template <class T> |
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189 void |
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190 Array<T>::print_info (std::ostream& os, const std::string& prefix) const |
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191 { |
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192 os << prefix << "rep address: " << rep << "\n" |
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193 << prefix << "rep->len: " << rep->len << "\n" |
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194 << prefix << "rep->data: " << static_cast<void *> (rep->data) << "\n" |
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195 << prefix << "rep->count: " << rep->count << "\n"; |
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196 } |
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197 |
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198 /* |
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199 ;;; Local Variables: *** |
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200 ;;; mode: C++ *** |
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201 ;;; End: *** |
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202 */ |
