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1 /* |
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2 |
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3 Copyright (C) 1996, 1997 John W. Eaton |
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4 |
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5 This file is part of Octave. |
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6 |
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7 Octave is free software; you can redistribute it and/or modify it |
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8 under the terms of the GNU General Public License as published by the |
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9 Free Software Foundation; either version 3 of the License, or (at your |
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10 option) any later version. |
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11 |
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12 Octave is distributed in the hope that it will be useful, but WITHOUT |
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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15 for more details. |
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16 |
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17 You should have received a copy of the GNU General Public License |
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18 along with Octave; see the file COPYING. If not, see |
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19 <http://www.gnu.org/licenses/>. |
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20 |
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21 */ |
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22 |
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23 #ifdef HAVE_CONFIG_H |
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24 #include <config.h> |
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25 #endif |
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26 |
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27 #include "error.h" |
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28 #include "oct-obj.h" |
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29 |
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30 octave_allocator |
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31 octave_value_list::allocator (sizeof (octave_value_list)); |
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32 |
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33 bool |
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34 octave_value_list::valid_scalar_indices (void) const |
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35 { |
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36 octave_idx_type n = length (); |
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37 |
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38 for (octave_idx_type i = 0; i < n; i++) |
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39 if (! data[i].valid_as_scalar_index ()) |
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40 return false; |
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41 |
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42 return true; |
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43 } |
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44 |
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45 void |
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46 octave_value_list::resize (octave_idx_type n, const octave_value& val) |
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47 { |
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48 octave_idx_type len = length (); |
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49 |
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50 if (n > len) |
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51 { |
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52 data.resize (n); |
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53 |
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54 for (octave_idx_type i = len; i < n; i++) |
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55 data[i] = val; |
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56 } |
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57 else if (n < len) |
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58 data.resize (n); |
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59 } |
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60 |
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61 octave_value_list& |
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62 octave_value_list::prepend (const octave_value& val) |
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63 { |
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64 octave_idx_type n = length (); |
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65 |
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66 resize (n + 1); |
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67 |
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68 while (n > 0) |
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69 { |
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70 elem (n) = elem (n - 1); |
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71 n--; |
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72 } |
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73 |
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74 elem (0) = val; |
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75 |
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76 return *this; |
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77 } |
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78 |
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79 octave_value_list& |
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80 octave_value_list::append (const octave_value& val) |
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81 { |
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82 octave_idx_type n = length (); |
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83 |
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84 resize (n + 1); |
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85 |
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86 elem (n) = val; |
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87 |
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88 return *this; |
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89 } |
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90 |
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91 octave_value_list& |
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92 octave_value_list::append (const octave_value_list& lst) |
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93 { |
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94 octave_idx_type len = length (); |
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95 octave_idx_type lst_len = lst.length (); |
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96 |
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97 resize (len + lst_len); |
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98 |
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99 for (octave_idx_type i = 0; i < lst_len; i++) |
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100 elem (len + i) = lst (i); |
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101 |
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102 return *this; |
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103 } |
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104 |
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105 octave_value_list& |
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106 octave_value_list::reverse (void) |
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107 { |
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108 octave_idx_type n = length (); |
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109 |
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110 for (octave_idx_type i = 0; i < n / 2; i++) |
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111 { |
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112 octave_value tmp = elem (i); |
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113 elem (i) = elem (n - i - 1); |
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114 elem (n - i - 1) = tmp; |
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115 } |
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116 |
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117 return *this; |
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118 } |
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119 |
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120 octave_value_list |
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121 octave_value_list::splice (octave_idx_type offset, octave_idx_type rep_length, |
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122 const octave_value_list& lst) const |
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123 { |
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124 octave_value_list retval; |
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125 |
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126 octave_idx_type len = length (); |
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127 |
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128 if (offset < 0 || offset >= len) |
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129 { |
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130 if (! (rep_length == 0 && offset == len)) |
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131 { |
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132 error ("octave_value_list::splice: invalid OFFSET"); |
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133 return retval; |
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134 } |
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135 } |
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136 |
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137 if (rep_length < 0 || rep_length + offset > len) |
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138 { |
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139 error ("octave_value_list::splice: invalid LENGTH"); |
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140 return retval; |
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141 } |
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142 |
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143 octave_idx_type lst_len = lst.length (); |
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144 |
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145 octave_idx_type new_len = len - rep_length + lst_len; |
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146 |
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147 retval.resize (new_len); |
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148 |
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149 octave_idx_type k = 0; |
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150 |
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151 for (octave_idx_type i = 0; i < offset; i++) |
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152 retval(k++) = elem (i); |
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153 |
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154 for (octave_idx_type i = 0; i < lst_len; i++) |
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155 retval(k++) = lst(i); |
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156 |
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157 for (octave_idx_type i = offset + rep_length; i < len; i++) |
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158 retval(k++) = elem (i); |
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159 |
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160 return retval; |
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161 } |
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162 |
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163 bool |
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164 octave_value_list::all_strings_p (void) const |
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165 { |
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166 octave_idx_type n = length (); |
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167 |
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168 for (octave_idx_type i = 0; i < n; i++) |
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169 if (! elem(i).is_string ()) |
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170 return false; |
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171 |
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172 return true; |
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173 } |
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174 |
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175 bool |
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176 octave_value_list::has_magic_colon (void) const |
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177 { |
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178 octave_idx_type n = length (); |
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179 |
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180 for (octave_idx_type i = 0; i < n; i++) |
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181 if (elem(i).is_magic_colon ()) |
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182 return true; |
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183 |
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184 return false; |
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185 } |
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186 |
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187 string_vector |
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188 octave_value_list::make_argv (const std::string& fcn_name) const |
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189 { |
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190 string_vector argv; |
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191 |
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192 if (all_strings_p ()) |
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193 { |
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194 octave_idx_type len = length (); |
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195 |
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196 octave_idx_type total_nr = 0; |
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197 |
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198 for (octave_idx_type i = 0; i < len; i++) |
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199 { |
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200 // An empty std::string ("") has zero columns and zero rows (a |
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201 // change that was made for Matlab contemptibility. |
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202 |
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203 octave_idx_type n = elem(i).rows (); |
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204 |
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205 total_nr += n ? n : 1; |
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206 } |
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207 |
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208 argv.resize (total_nr+1); |
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209 |
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210 argv[0] = fcn_name; |
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211 |
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212 octave_idx_type k = 1; |
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213 for (octave_idx_type i = 0; i < len; i++) |
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214 { |
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215 octave_idx_type nr = elem(i).rows (); |
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216 |
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217 if (nr < 2) |
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218 argv[k++] = elem(i).string_value (); |
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219 else |
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220 { |
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221 string_vector tmp = elem(i).all_strings (); |
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222 |
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223 for (octave_idx_type j = 0; j < nr; j++) |
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224 argv[k++] = tmp[j]; |
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225 } |
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226 } |
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227 } |
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228 else |
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229 error ("%s: expecting all arguments to be strings", fcn_name.c_str ()); |
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230 |
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231 return argv; |
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232 } |
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233 |
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234 /* |
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235 ;;; Local Variables: *** |
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236 ;;; mode: C++ *** |
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237 ;;; End: *** |
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238 */ |
