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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 2, or (at your option) any |
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10 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, write to the Free |
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19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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20 |
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21 */ |
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22 |
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23 #if defined (__GNUG__) |
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24 #pragma implementation |
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25 #endif |
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26 |
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27 #ifdef HAVE_CONFIG_H |
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28 #include <config.h> |
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29 #endif |
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30 |
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31 #include "Array-flags.h" |
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32 #include "str-vec.h" |
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33 |
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34 #include "oct-obj.h" |
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2979
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35 #include "oct-lvalue.h" |
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36 #include "ov.h" |
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37 #include "ov-base.h" |
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38 #include "ov-bool.h" |
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39 #include "ov-bool-mat.h" |
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40 #include "ov-scalar.h" |
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41 #include "ov-re-mat.h" |
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42 #include "ov-complex.h" |
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43 #include "ov-cx-mat.h" |
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44 #include "ov-ch-mat.h" |
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45 #include "ov-str-mat.h" |
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46 #include "ov-range.h" |
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47 #include "ov-struct.h" |
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48 #include "ov-file.h" |
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49 #include "ov-list.h" |
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50 #include "ov-colon.h" |
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51 #include "ov-va-args.h" |
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52 #include "ov-builtin.h" |
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53 #include "ov-mapper.h" |
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54 #include "ov-usr-fcn.h" |
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55 #include "ov-typeinfo.h" |
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56 |
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57 #include "defun.h" |
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58 #include "error.h" |
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59 #include "gripes.h" |
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60 #include "pager.h" |
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61 #include "pr-output.h" |
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62 #include "utils.h" |
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63 #include "variables.h" |
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64 |
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65 // We are likely to have a lot of octave_value objects to allocate, so |
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66 // make the grow_size large. |
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67 octave_allocator |
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68 octave_value::allocator (sizeof (octave_value), 1024); |
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69 |
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70 // If TRUE, allow assignments like |
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71 // |
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72 // octave> A(1) = 3; A(2) = 5 |
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73 // |
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74 // for A already defined and a matrix type. |
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75 bool Vdo_fortran_indexing; |
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76 |
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77 // Should we allow things like: |
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78 // |
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79 // octave> 'abc' + 0 |
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80 // 97 98 99 |
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81 // |
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82 // to happen? A positive value means yes. A negative value means |
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83 // yes, but print a warning message. Zero means it should be |
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84 // considered an error. |
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85 int Vimplicit_str_to_num_ok; |
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86 |
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87 // Should we allow silent conversion of complex to real when a real |
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88 // type is what we're really looking for? A positive value means yes. |
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89 // A negative value means yes, but print a warning message. Zero |
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90 // means it should be considered an error. |
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91 int Vok_to_lose_imaginary_part; |
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92 |
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93 // If TRUE, create column vectors when doing assignments like: |
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94 // |
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95 // octave> A(1) = 3; A(2) = 5 |
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96 // |
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97 // (for A undefined). Only matters when resize_on_range_error is also |
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98 // TRUE. |
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99 bool Vprefer_column_vectors; |
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100 |
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101 // If TRUE, print the name along with the value. |
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102 bool Vprint_answer_id_name; |
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103 |
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104 // Should operations on empty matrices return empty matrices or an |
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105 // error? A positive value means yes. A negative value means yes, |
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106 // but print a warning message. Zero means it should be considered an |
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107 // error. |
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108 int Vpropagate_empty_matrices; |
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109 |
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110 // How many levels of structure elements should we print? |
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111 int Vstruct_levels_to_print; |
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112 |
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113 // Allow divide by zero errors to be suppressed. |
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114 bool Vwarn_divide_by_zero; |
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115 |
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116 // If TRUE, resize matrices when performing and indexed assignment and |
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117 // the indices are outside the current bounds. |
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118 bool Vresize_on_range_error; |
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119 |
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120 // XXX FIXME XXX |
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121 |
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122 // Octave's value type. |
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123 |
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124 string |
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125 octave_value::unary_op_as_string (unary_op op) |
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126 { |
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127 string retval; |
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128 |
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129 switch (op) |
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130 { |
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131 case not: |
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132 retval = "!"; |
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133 break; |
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134 |
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135 case uminus: |
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136 retval = "-"; |
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137 break; |
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138 |
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139 case transpose: |
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140 retval = ".'"; |
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141 break; |
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142 |
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143 case hermitian: |
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144 retval = "'"; |
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145 break; |
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146 |
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147 case incr: |
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148 retval = "++"; |
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149 break; |
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150 |
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151 case decr: |
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152 retval = "--"; |
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153 break; |
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154 |
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155 default: |
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156 retval = "<unknown>"; |
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157 } |
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158 |
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159 return retval; |
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160 } |
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161 |
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162 string |
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163 octave_value::binary_op_as_string (binary_op op) |
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164 { |
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165 string retval; |
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166 |
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167 switch (op) |
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168 { |
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169 case add: |
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170 retval = "+"; |
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171 break; |
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172 |
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173 case sub: |
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174 retval = "-"; |
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175 break; |
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176 |
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177 case mul: |
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178 retval = "*"; |
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179 break; |
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180 |
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181 case div: |
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182 retval = "/"; |
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183 break; |
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184 |
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185 case pow: |
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186 retval = "^"; |
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187 break; |
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188 |
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189 case ldiv: |
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190 retval = "\\"; |
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191 break; |
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192 |
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193 case lshift: |
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194 retval = "<<"; |
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195 break; |
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196 |
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197 case rshift: |
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198 retval = ">>"; |
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199 break; |
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200 |
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201 case lt: |
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202 retval = "<"; |
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203 break; |
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204 |
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205 case le: |
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206 retval = "<="; |
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207 break; |
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208 |
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209 case eq: |
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210 retval = "=="; |
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211 break; |
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212 |
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213 case ge: |
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214 retval = ">="; |
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215 break; |
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216 |
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217 case gt: |
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218 retval = ">"; |
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219 break; |
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220 |
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221 case ne: |
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222 retval = "!="; |
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223 break; |
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224 |
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225 case el_mul: |
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226 retval = ".*"; |
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227 break; |
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228 |
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229 case el_div: |
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230 retval = "./"; |
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231 break; |
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232 |
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233 case el_pow: |
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234 retval = ".^"; |
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235 break; |
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236 |
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237 case el_ldiv: |
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238 retval = ".\\"; |
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239 break; |
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240 |
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241 case el_and: |
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242 retval = "&"; |
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243 break; |
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244 |
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245 case el_or: |
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246 retval = "|"; |
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247 break; |
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248 |
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249 case struct_ref: |
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250 retval = "."; |
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251 break; |
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252 |
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253 default: |
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254 retval = "<unknown>"; |
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255 } |
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256 |
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257 return retval; |
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258 } |
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259 |
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260 string |
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261 octave_value::assign_op_as_string (assign_op op) |
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262 { |
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263 string retval; |
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264 |
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265 switch (op) |
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266 { |
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267 case asn_eq: |
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268 retval = "="; |
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269 break; |
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270 |
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271 case add_eq: |
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272 retval = "+="; |
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273 break; |
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274 |
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275 case sub_eq: |
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276 retval = "-="; |
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277 break; |
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278 |
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279 case mul_eq: |
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280 retval = "*="; |
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281 break; |
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282 |
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283 case div_eq: |
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284 retval = "/="; |
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285 break; |
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286 |
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287 case lshift_eq: |
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288 retval = "<<="; |
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289 break; |
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290 |
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291 case rshift_eq: |
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292 retval = ">>="; |
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293 break; |
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294 |
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295 case el_mul_eq: |
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296 retval = ".*="; |
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297 break; |
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298 |
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299 case el_div_eq: |
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300 retval = "./="; |
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301 break; |
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302 |
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303 case el_and_eq: |
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304 retval = "&="; |
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305 break; |
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306 |
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307 case el_or_eq: |
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308 retval = "|="; |
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309 break; |
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310 |
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311 default: |
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312 retval = "<unknown>"; |
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313 } |
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314 |
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315 return retval; |
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316 } |
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317 |
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318 octave_value::octave_value (void) |
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319 : rep (new octave_base_value ()) |
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320 { |
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321 rep->count = 1; |
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322 } |
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323 |
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324 octave_value::octave_value (double d) |
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325 : rep (new octave_scalar (d)) |
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326 { |
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327 rep->count = 1; |
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328 } |
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329 |
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330 octave_value::octave_value (const Matrix& m) |
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331 : rep (new octave_matrix (m)) |
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332 { |
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333 rep->count = 1; |
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334 maybe_mutate (); |
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335 } |
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336 |
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337 octave_value::octave_value (const DiagMatrix& d) |
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338 : rep (new octave_matrix (d)) |
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339 { |
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340 rep->count = 1; |
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341 maybe_mutate (); |
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342 } |
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343 |
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344 octave_value::octave_value (const RowVector& v, int pcv) |
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345 : rep (new octave_matrix (v, pcv)) |
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346 { |
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347 rep->count = 1; |
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348 maybe_mutate (); |
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349 } |
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350 |
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351 octave_value::octave_value (const ColumnVector& v, int pcv) |
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352 : rep (new octave_matrix (v, pcv)) |
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353 { |
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354 rep->count = 1; |
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355 maybe_mutate (); |
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356 } |
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357 |
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358 octave_value::octave_value (const Complex& C) |
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359 : rep (new octave_complex (C)) |
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360 { |
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361 rep->count = 1; |
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362 maybe_mutate (); |
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363 } |
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364 |
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365 octave_value::octave_value (const ComplexMatrix& m) |
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366 : rep (new octave_complex_matrix (m)) |
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367 { |
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368 rep->count = 1; |
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369 maybe_mutate (); |
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370 } |
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371 |
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372 octave_value::octave_value (const ComplexDiagMatrix& d) |
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373 : rep (new octave_complex_matrix (d)) |
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374 { |
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375 rep->count = 1; |
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376 maybe_mutate (); |
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377 } |
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378 |
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379 octave_value::octave_value (const ComplexRowVector& v, int pcv) |
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380 : rep (new octave_complex_matrix (v, pcv)) |
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381 { |
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382 rep->count = 1; |
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383 maybe_mutate (); |
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384 } |
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385 |
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386 octave_value::octave_value (const ComplexColumnVector& v, int pcv) |
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387 : rep (new octave_complex_matrix (v, pcv)) |
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388 { |
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389 rep->count = 1; |
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390 maybe_mutate (); |
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391 } |
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392 |
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393 octave_value::octave_value (bool b) |
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394 : rep (new octave_bool (b)) |
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395 { |
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396 rep->count = 1; |
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397 } |
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398 |
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399 octave_value::octave_value (const boolMatrix& bm) |
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400 : rep (new octave_bool_matrix (bm)) |
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401 { |
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402 rep->count = 1; |
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403 maybe_mutate (); |
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404 } |
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405 |
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406 octave_value::octave_value (char c) |
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407 : rep (new octave_char_matrix_str (c)) |
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408 { |
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409 rep->count = 1; |
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410 maybe_mutate (); |
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411 } |
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412 |
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413 octave_value::octave_value (const char *s) |
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414 : rep (new octave_char_matrix_str (s)) |
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415 { |
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416 rep->count = 1; |
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417 maybe_mutate (); |
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418 } |
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419 |
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420 octave_value::octave_value (const string& s) |
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421 : rep (new octave_char_matrix_str (s)) |
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422 { |
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423 rep->count = 1; |
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424 maybe_mutate (); |
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425 } |
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426 |
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427 octave_value::octave_value (const string_vector& s) |
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428 : rep (new octave_char_matrix_str (s)) |
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429 { |
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430 rep->count = 1; |
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431 maybe_mutate (); |
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432 } |
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433 |
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434 octave_value::octave_value (const charMatrix& chm, bool is_string) |
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435 : rep (0) |
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436 { |
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437 if (is_string) |
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438 rep = new octave_char_matrix_str (chm); |
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439 else |
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440 rep = new octave_char_matrix (chm); |
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441 |
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2409
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442 rep->count = 1; |
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443 maybe_mutate (); |
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2409
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444 } |
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445 |
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446 octave_value::octave_value (double base, double limit, double inc) |
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447 : rep (new octave_range (base, limit, inc)) |
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448 { |
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449 rep->count = 1; |
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450 maybe_mutate (); |
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451 } |
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452 |
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453 octave_value::octave_value (const Range& r) |
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454 : rep (new octave_range (r)) |
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455 { |
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456 rep->count = 1; |
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457 maybe_mutate (); |
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458 } |
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459 |
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460 octave_value::octave_value (const Octave_map& m) |
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461 : rep (new octave_struct (m)) |
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462 { |
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463 rep->count = 1; |
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464 } |
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465 |
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466 octave_value::octave_value (octave_stream *s, int n) |
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467 : rep (new octave_file (s, n)) |
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468 { |
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469 rep->count = 1; |
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470 } |
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471 |
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472 octave_value::octave_value (octave_function *f) |
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473 : rep (f) |
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474 { |
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475 rep->count = 1; |
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476 } |
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477 |
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478 octave_value::octave_value (const octave_value_list& l) |
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479 : rep (new octave_list (l)) |
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480 { |
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481 rep->count = 1; |
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482 } |
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483 |
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484 octave_value::octave_value (octave_value::magic_colon) |
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485 : rep (new octave_magic_colon ()) |
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486 { |
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487 rep->count = 1; |
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488 } |
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489 |
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490 octave_value::octave_value (octave_value::all_va_args) |
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491 : rep (new octave_all_va_args ()) |
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492 { |
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493 rep->count = 1; |
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494 } |
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495 |
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496 octave_value::octave_value (octave_value *new_rep) |
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497 : rep (new_rep) |
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498 { |
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499 rep->count = 1; |
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500 } |
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501 |
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502 octave_value::~octave_value (void) |
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503 { |
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504 #if defined (MDEBUG) |
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505 cerr << "~octave_value: rep: " << rep |
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506 << " rep->count: " << rep->count << "\n"; |
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507 #endif |
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508 |
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509 if (rep && --rep->count == 0) |
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510 { |
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511 delete rep; |
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|
512 rep = 0; |
|
|
513 } |
|
|
514 } |
|
|
515 |
|
2880
|
516 octave_value * |
|
|
517 octave_value::clone (void) |
|
|
518 { |
|
|
519 panic_impossible (); |
|
|
520 } |
|
|
521 |
|
2409
|
522 void |
|
|
523 octave_value::maybe_mutate (void) |
|
|
524 { |
|
2410
|
525 octave_value *tmp = rep->try_narrowing_conversion (); |
|
2409
|
526 |
|
|
527 if (tmp && tmp != rep) |
|
|
528 { |
|
|
529 if (--rep->count == 0) |
|
|
530 delete rep; |
|
|
531 |
|
|
532 rep = tmp; |
|
|
533 rep->count = 1; |
|
|
534 } |
|
|
535 } |
|
|
536 |
|
2974
|
537 octave_value_list |
|
|
538 octave_value::do_index_op (int nargout, const octave_value_list& idx) |
|
|
539 { |
|
|
540 return rep->do_index_op (nargout, idx); |
|
|
541 } |
|
|
542 |
|
2376
|
543 static void |
|
3203
|
544 gripe_no_conversion (const string& on, const string& tn1, const string& tn2) |
|
2376
|
545 { |
|
3203
|
546 error ("operator %s: no conversion for assignment of `%s' to indexed `%s'", |
|
|
547 on.c_str (), tn2.c_str (), tn1.c_str ()); |
|
2376
|
548 } |
|
|
549 |
|
2963
|
550 void |
|
3203
|
551 octave_value::assign (assign_op op, const octave_value& rhs) |
|
2880
|
552 { |
|
|
553 // XXX FIXME XXX -- make this work for ops other than `='. |
|
|
554 |
|
3203
|
555 if (op == asn_eq) |
|
|
556 operator = (rhs); |
|
|
557 else |
|
|
558 { |
|
|
559 string on = assign_op_as_string (op); |
|
|
560 error ("operator `%s' not supported yet", on.c_str ()); |
|
|
561 } |
|
2880
|
562 } |
|
|
563 |
|
2963
|
564 void |
|
2880
|
565 octave_value::assign (octave_value::assign_op op, |
|
|
566 const octave_value_list& idx, |
|
|
567 const octave_value& rhs) |
|
2409
|
568 { |
|
2948
|
569 if (Vresize_on_range_error || is_defined ()) |
|
|
570 { |
|
|
571 make_unique (); |
|
|
572 |
|
|
573 bool assignment_ok = try_assignment (op, idx, rhs); |
|
|
574 |
|
|
575 if (! (error_state || assignment_ok)) |
|
|
576 { |
|
3203
|
577 assignment_ok = try_assignment_with_conversion (op, idx, rhs); |
|
2948
|
578 |
|
|
579 if (! (error_state || assignment_ok)) |
|
3203
|
580 gripe_no_conversion (assign_op_as_string (op), |
|
|
581 type_name (), rhs.type_name ()); |
|
2948
|
582 } |
|
|
583 |
|
|
584 if (! error_state) |
|
|
585 maybe_mutate (); |
|
|
586 } |
|
|
587 else |
|
|
588 { |
|
|
589 error ("indexed assignment to previously undefined variables"); |
|
|
590 error ("is only possible when resize_on_range_error is true"); |
|
|
591 } |
|
|
592 } |
|
|
593 |
|
|
594 void |
|
|
595 octave_value::assign_struct_elt (assign_op op, const string& elt_nm, |
|
|
596 const octave_value& rhs) |
|
|
597 { |
|
2409
|
598 make_unique (); |
|
2376
|
599 |
|
2948
|
600 rep->assign_struct_elt (op, elt_nm, rhs); |
|
|
601 } |
|
|
602 |
|
2409
|
603 |
|
2948
|
604 void |
|
|
605 octave_value::assign_struct_elt (assign_op op, const string& elt_nm, |
|
|
606 const octave_value_list& idx, |
|
|
607 const octave_value& rhs) |
|
|
608 { |
|
|
609 make_unique (); |
|
2409
|
610 |
|
2948
|
611 rep->assign_struct_elt (op, elt_nm, idx, rhs); |
|
|
612 } |
|
2376
|
613 |
|
2979
|
614 octave_lvalue |
|
2948
|
615 octave_value::struct_elt_ref (const string& nm) |
|
|
616 { |
|
|
617 return rep->struct_elt_ref (this, nm); |
|
|
618 } |
|
2409
|
619 |
|
2979
|
620 octave_lvalue |
|
2948
|
621 octave_value::struct_elt_ref (octave_value *, const string&) |
|
|
622 { |
|
|
623 panic_impossible (); |
|
|
624 |
|
2979
|
625 return octave_lvalue (); |
|
2376
|
626 } |
|
|
627 |
|
|
628 Octave_map |
|
|
629 octave_value::map_value (void) const |
|
|
630 { |
|
|
631 return rep->map_value (); |
|
|
632 } |
|
|
633 |
|
2903
|
634 octave_stream * |
|
|
635 octave_value::stream_value (void) const |
|
|
636 { |
|
|
637 return rep->stream_value (); |
|
|
638 } |
|
|
639 |
|
|
640 int |
|
|
641 octave_value::stream_number (void) const |
|
|
642 { |
|
|
643 return rep->stream_number (); |
|
|
644 } |
|
|
645 |
|
2974
|
646 octave_function * |
|
|
647 octave_value::function_value (bool silent) |
|
|
648 { |
|
|
649 return rep->function_value (silent); |
|
|
650 } |
|
|
651 |
|
2880
|
652 octave_value_list |
|
|
653 octave_value::list_value (void) const |
|
|
654 { |
|
|
655 return rep->list_value (); |
|
|
656 } |
|
|
657 |
|
2376
|
658 ColumnVector |
|
|
659 octave_value::vector_value (bool force_string_conv, |
|
|
660 bool force_vector_conversion) const |
|
|
661 { |
|
|
662 ColumnVector retval; |
|
|
663 |
|
|
664 Matrix m = matrix_value (force_string_conv); |
|
|
665 |
|
|
666 if (error_state) |
|
|
667 return retval; |
|
|
668 |
|
|
669 int nr = m.rows (); |
|
|
670 int nc = m.columns (); |
|
|
671 |
|
|
672 if (nr == 1) |
|
|
673 { |
|
|
674 retval.resize (nc); |
|
|
675 for (int i = 0; i < nc; i++) |
|
|
676 retval (i) = m (0, i); |
|
|
677 } |
|
|
678 else if (nc == 1) |
|
|
679 { |
|
|
680 retval.resize (nr); |
|
|
681 for (int i = 0; i < nr; i++) |
|
|
682 retval (i) = m (i, 0); |
|
|
683 } |
|
|
684 else if (nr > 0 && nc > 0 |
|
|
685 && (Vdo_fortran_indexing || force_vector_conversion)) |
|
|
686 { |
|
|
687 retval.resize (nr * nc); |
|
|
688 int k = 0; |
|
|
689 for (int j = 0; j < nc; j++) |
|
|
690 for (int i = 0; i < nr; i++) |
|
|
691 retval (k++) = m (i, j); |
|
|
692 } |
|
|
693 else |
|
|
694 { |
|
|
695 string tn = type_name (); |
|
|
696 gripe_invalid_conversion (tn.c_str (), "real vector"); |
|
|
697 } |
|
|
698 |
|
|
699 return retval; |
|
|
700 } |
|
|
701 |
|
|
702 ComplexColumnVector |
|
|
703 octave_value::complex_vector_value (bool force_string_conv, |
|
|
704 bool force_vector_conversion) const |
|
|
705 { |
|
|
706 ComplexColumnVector retval; |
|
|
707 |
|
|
708 ComplexMatrix m = complex_matrix_value (force_string_conv); |
|
|
709 |
|
|
710 if (error_state) |
|
|
711 return retval; |
|
|
712 |
|
|
713 int nr = m.rows (); |
|
|
714 int nc = m.columns (); |
|
|
715 |
|
|
716 if (nr == 1) |
|
|
717 { |
|
|
718 retval.resize (nc); |
|
|
719 for (int i = 0; i < nc; i++) |
|
|
720 retval (i) = m (0, i); |
|
|
721 } |
|
|
722 else if (nc == 1) |
|
|
723 { |
|
|
724 retval.resize (nr); |
|
|
725 for (int i = 0; i < nr; i++) |
|
|
726 retval (i) = m (i, 0); |
|
|
727 } |
|
|
728 else if (nr > 0 && nc > 0 |
|
|
729 && (Vdo_fortran_indexing || force_vector_conversion)) |
|
|
730 { |
|
|
731 retval.resize (nr * nc); |
|
|
732 int k = 0; |
|
|
733 for (int j = 0; j < nc; j++) |
|
|
734 for (int i = 0; i < nr; i++) |
|
|
735 retval (k++) = m (i, j); |
|
|
736 } |
|
|
737 else |
|
|
738 { |
|
|
739 string tn = type_name (); |
|
|
740 gripe_invalid_conversion (tn.c_str (), "complex vector"); |
|
|
741 } |
|
|
742 |
|
|
743 return retval; |
|
|
744 } |
|
|
745 |
|
|
746 void |
|
|
747 octave_value::print_with_name (ostream& output_buf, const string& name, |
|
2903
|
748 bool print_padding) const |
|
2376
|
749 { |
|
2903
|
750 bool pad_after = print_name_tag (output_buf, name); |
|
2376
|
751 |
|
|
752 print (output_buf); |
|
|
753 |
|
|
754 if (print_padding && pad_after) |
|
2903
|
755 newline (output_buf); |
|
2376
|
756 } |
|
|
757 |
|
|
758 static void |
|
2413
|
759 gripe_indexed_assignment (const string& tn1, const string& tn2) |
|
|
760 { |
|
2903
|
761 error ("assignment of `%s' to indexed `%s' not implemented", |
|
2413
|
762 tn2.c_str (), tn1.c_str ()); |
|
|
763 } |
|
|
764 |
|
|
765 static void |
|
3203
|
766 gripe_assign_conversion_failed (const string& tn1, const string& tn2) |
|
2413
|
767 { |
|
2903
|
768 error ("type conversion for assignment of `%s' to indexed `%s' failed", |
|
2413
|
769 tn2.c_str (), tn1.c_str ()); |
|
|
770 } |
|
|
771 |
|
|
772 bool |
|
2880
|
773 octave_value::convert_and_assign (octave_value::assign_op op, |
|
|
774 const octave_value_list& idx, |
|
2413
|
775 const octave_value& rhs) |
|
|
776 { |
|
|
777 bool assignment_ok = false; |
|
|
778 |
|
|
779 int t_lhs = type_id (); |
|
|
780 int t_rhs = rhs.type_id (); |
|
|
781 |
|
|
782 int t_result |
|
|
783 = octave_value_typeinfo::lookup_pref_assign_conv (t_lhs, t_rhs); |
|
|
784 |
|
|
785 if (t_result >= 0) |
|
|
786 { |
|
2427
|
787 type_conv_fcn cf |
|
2413
|
788 = octave_value_typeinfo::lookup_widening_op (t_lhs, t_result); |
|
|
789 |
|
|
790 if (cf) |
|
|
791 { |
|
|
792 octave_value *tmp = cf (*rep); |
|
|
793 |
|
|
794 if (tmp) |
|
|
795 { |
|
2589
|
796 octave_value *old_rep = rep; |
|
|
797 rep = tmp; |
|
|
798 rep->count = 1; |
|
|
799 |
|
2880
|
800 assignment_ok = try_assignment (op, idx, rhs); |
|
2589
|
801 |
|
|
802 if (! assignment_ok && old_rep) |
|
2413
|
803 { |
|
|
804 if (--rep->count == 0) |
|
|
805 delete rep; |
|
|
806 |
|
2589
|
807 rep = old_rep; |
|
|
808 old_rep = 0; |
|
2413
|
809 } |
|
|
810 |
|
2589
|
811 if (old_rep && --old_rep->count == 0) |
|
|
812 delete old_rep; |
|
2413
|
813 } |
|
|
814 else |
|
3203
|
815 gripe_assign_conversion_failed (type_name (), rhs.type_name ()); |
|
2413
|
816 } |
|
|
817 else |
|
|
818 gripe_indexed_assignment (type_name (), rhs.type_name ()); |
|
|
819 } |
|
|
820 |
|
|
821 return (assignment_ok && ! error_state); |
|
|
822 } |
|
|
823 |
|
|
824 bool |
|
2880
|
825 octave_value::try_assignment_with_conversion (octave_value::assign_op op, |
|
|
826 const octave_value_list& idx, |
|
2413
|
827 const octave_value& rhs) |
|
|
828 { |
|
2880
|
829 bool assignment_ok = convert_and_assign (op, idx, rhs); |
|
2413
|
830 |
|
|
831 if (! (error_state || assignment_ok)) |
|
|
832 { |
|
|
833 octave_value tmp_rhs; |
|
2427
|
834 type_conv_fcn cf_rhs = rhs.numeric_conversion_function (); |
|
2413
|
835 |
|
|
836 if (cf_rhs) |
|
3203
|
837 { |
|
|
838 octave_value *tmp = cf_rhs (*rhs.rep); |
|
|
839 |
|
|
840 if (tmp) |
|
|
841 tmp_rhs = octave_value (tmp); |
|
|
842 else |
|
|
843 { |
|
|
844 gripe_assign_conversion_failed (type_name (), rhs.type_name ()); |
|
|
845 return false; |
|
|
846 } |
|
|
847 } |
|
2413
|
848 else |
|
|
849 tmp_rhs = rhs; |
|
|
850 |
|
|
851 octave_value *old_rep = 0; |
|
2427
|
852 type_conv_fcn cf_this = numeric_conversion_function (); |
|
2413
|
853 |
|
|
854 if (cf_this) |
|
|
855 { |
|
|
856 old_rep = rep; |
|
3203
|
857 |
|
|
858 octave_value *tmp = cf_this (*rep); |
|
|
859 |
|
|
860 if (tmp) |
|
|
861 { |
|
|
862 rep = tmp; |
|
|
863 rep->count = 1; |
|
|
864 } |
|
|
865 else |
|
|
866 { |
|
|
867 gripe_assign_conversion_failed (type_name (), rhs.type_name ()); |
|
|
868 return false; |
|
|
869 } |
|
2413
|
870 } |
|
|
871 |
|
|
872 if (cf_this || cf_rhs) |
|
|
873 { |
|
2880
|
874 assignment_ok = try_assignment (op, idx, tmp_rhs); |
|
2413
|
875 |
|
|
876 if (! (error_state || assignment_ok)) |
|
2880
|
877 assignment_ok = convert_and_assign (op, idx, tmp_rhs); |
|
2413
|
878 } |
|
|
879 |
|
|
880 if (! assignment_ok && old_rep) |
|
|
881 { |
|
|
882 if (--rep->count == 0) |
|
|
883 delete rep; |
|
|
884 |
|
|
885 rep = old_rep; |
|
|
886 old_rep = 0; |
|
|
887 } |
|
|
888 |
|
|
889 if (old_rep && --old_rep->count == 0) |
|
|
890 delete old_rep; |
|
|
891 } |
|
|
892 |
|
|
893 return (assignment_ok && ! error_state); |
|
|
894 } |
|
|
895 |
|
|
896 bool |
|
2880
|
897 octave_value::try_assignment (octave_value::assign_op op, |
|
|
898 const octave_value_list& idx, |
|
2413
|
899 const octave_value& rhs) |
|
|
900 { |
|
|
901 bool retval = false; |
|
|
902 |
|
|
903 int t_lhs = type_id (); |
|
|
904 int t_rhs = rhs.type_id (); |
|
|
905 |
|
2880
|
906 assign_op_fcn f |
|
|
907 = octave_value_typeinfo::lookup_assign_op (op, t_lhs, t_rhs); |
|
2413
|
908 |
|
|
909 if (f) |
|
|
910 { |
|
|
911 f (*rep, idx, *(rhs.rep)); |
|
|
912 |
|
|
913 retval = (! error_state); |
|
|
914 } |
|
3196
|
915 else |
|
|
916 { |
|
|
917 f = octave_value_typeinfo::lookup_assignany_op (op, t_lhs); |
|
|
918 |
|
|
919 if (f) |
|
|
920 { |
|
|
921 f (*rep, idx, rhs); |
|
|
922 |
|
|
923 retval = (! error_state); |
|
|
924 } |
|
|
925 } |
|
2413
|
926 |
|
|
927 return retval; |
|
|
928 } |
|
|
929 |
|
|
930 static void |
|
2376
|
931 gripe_binary_op (const string& on, const string& tn1, const string& tn2) |
|
|
932 { |
|
2903
|
933 error ("binary operator `%s' not implemented for `%s' by `%s' operations", |
|
2376
|
934 on.c_str (), tn1.c_str (), tn2.c_str ()); |
|
|
935 } |
|
|
936 |
|
3203
|
937 static void |
|
|
938 gripe_binary_op_conv (const string& on) |
|
|
939 { |
|
|
940 error ("type conversion failed for binary operator `%s'", on.c_str ()); |
|
|
941 } |
|
|
942 |
|
2376
|
943 octave_value |
|
|
944 do_binary_op (octave_value::binary_op op, const octave_value& v1, |
|
|
945 const octave_value& v2) |
|
|
946 { |
|
|
947 octave_value retval; |
|
|
948 |
|
|
949 int t1 = v1.type_id (); |
|
|
950 int t2 = v2.type_id (); |
|
|
951 |
|
2427
|
952 binary_op_fcn f = octave_value_typeinfo::lookup_binary_op (op, t1, t2); |
|
2376
|
953 |
|
|
954 if (f) |
|
|
955 retval = f (*v1.rep, *v2.rep); |
|
|
956 else |
|
|
957 { |
|
|
958 octave_value tv1; |
|
2427
|
959 type_conv_fcn cf1 = v1.numeric_conversion_function (); |
|
2376
|
960 |
|
|
961 if (cf1) |
|
|
962 { |
|
3203
|
963 octave_value *tmp = cf1 (*v1.rep); |
|
|
964 |
|
|
965 if (tmp) |
|
|
966 { |
|
|
967 tv1 = octave_value (tmp); |
|
|
968 t1 = tv1.type_id (); |
|
|
969 } |
|
|
970 else |
|
|
971 { |
|
|
972 gripe_binary_op_conv (octave_value::binary_op_as_string (op)); |
|
|
973 return retval; |
|
|
974 } |
|
2376
|
975 } |
|
|
976 else |
|
|
977 tv1 = v1; |
|
|
978 |
|
|
979 octave_value tv2; |
|
2427
|
980 type_conv_fcn cf2 = v2.numeric_conversion_function (); |
|
2376
|
981 |
|
|
982 if (cf2) |
|
|
983 { |
|
3203
|
984 octave_value *tmp = cf2 (*v2.rep); |
|
|
985 |
|
|
986 if (tmp) |
|
|
987 { |
|
|
988 tv2 = octave_value (tmp); |
|
|
989 t2 = tv2.type_id (); |
|
|
990 } |
|
|
991 else |
|
|
992 { |
|
|
993 gripe_binary_op_conv (octave_value::binary_op_as_string (op)); |
|
|
994 return retval; |
|
|
995 } |
|
2376
|
996 } |
|
|
997 else |
|
|
998 tv2 = v2; |
|
|
999 |
|
|
1000 if (cf1 || cf2) |
|
|
1001 { |
|
2427
|
1002 binary_op_fcn f |
|
2376
|
1003 = octave_value_typeinfo::lookup_binary_op (op, t1, t2); |
|
|
1004 |
|
|
1005 if (f) |
|
|
1006 retval = f (*tv1.rep, *tv2.rep); |
|
|
1007 else |
|
|
1008 gripe_binary_op (octave_value::binary_op_as_string (op), |
|
|
1009 v1.type_name (), v2.type_name ()); |
|
|
1010 } |
|
|
1011 else |
|
|
1012 gripe_binary_op (octave_value::binary_op_as_string (op), |
|
|
1013 v1.type_name (), v2.type_name ()); |
|
|
1014 } |
|
|
1015 |
|
|
1016 return retval; |
|
|
1017 } |
|
|
1018 |
|
3203
|
1019 static void |
|
|
1020 gripe_unary_op (const string& on, const string& tn) |
|
|
1021 { |
|
|
1022 error ("unary operator `%s' not implemented for `%s' operands", |
|
|
1023 on.c_str (), tn.c_str ()); |
|
|
1024 } |
|
|
1025 |
|
|
1026 static void |
|
|
1027 gripe_unary_op_conv (const string& on) |
|
|
1028 { |
|
|
1029 error ("type conversion failed for unary operator `%s'", on.c_str ()); |
|
|
1030 } |
|
|
1031 |
|
|
1032 octave_value |
|
|
1033 do_unary_op (octave_value::unary_op op, const octave_value& v) |
|
|
1034 { |
|
|
1035 octave_value retval; |
|
|
1036 |
|
|
1037 int t = v.type_id (); |
|
|
1038 |
|
|
1039 unary_op_fcn f = octave_value_typeinfo::lookup_unary_op (op, t); |
|
|
1040 |
|
|
1041 if (f) |
|
|
1042 retval = f (*v.rep); |
|
|
1043 else |
|
|
1044 { |
|
|
1045 octave_value tv; |
|
|
1046 type_conv_fcn cf = v.numeric_conversion_function (); |
|
|
1047 |
|
|
1048 if (cf) |
|
|
1049 { |
|
|
1050 octave_value *tmp = cf (*v.rep); |
|
|
1051 |
|
|
1052 if (tmp) |
|
|
1053 { |
|
|
1054 tv = octave_value (tmp); |
|
|
1055 t = tv.type_id (); |
|
|
1056 |
|
|
1057 unary_op_fcn f = octave_value_typeinfo::lookup_unary_op (op, t); |
|
|
1058 |
|
|
1059 if (f) |
|
|
1060 retval = f (*tv.rep); |
|
|
1061 else |
|
|
1062 gripe_unary_op (octave_value::unary_op_as_string (op), |
|
|
1063 v.type_name ()); |
|
|
1064 } |
|
|
1065 else |
|
|
1066 gripe_unary_op_conv (octave_value::unary_op_as_string (op)); |
|
|
1067 } |
|
|
1068 else |
|
|
1069 gripe_unary_op (octave_value::unary_op_as_string (op), |
|
|
1070 v.type_name ()); |
|
|
1071 } |
|
|
1072 |
|
|
1073 return retval; |
|
|
1074 } |
|
|
1075 |
|
|
1076 static void |
|
|
1077 gripe_unary_op_conversion_failed (const string& op, const string& tn) |
|
|
1078 { |
|
|
1079 error ("operator %s: type conversion for `%s' failed", |
|
|
1080 op.c_str (), tn.c_str ()); |
|
|
1081 } |
|
|
1082 |
|
|
1083 void |
|
|
1084 octave_value::do_non_const_unary_op (octave_value::unary_op op) |
|
|
1085 { |
|
|
1086 octave_value retval; |
|
|
1087 |
|
|
1088 int t = type_id (); |
|
|
1089 |
|
|
1090 non_const_unary_op_fcn f |
|
|
1091 = octave_value_typeinfo::lookup_non_const_unary_op (op, t); |
|
|
1092 |
|
|
1093 if (f) |
|
|
1094 { |
|
|
1095 make_unique (); |
|
|
1096 |
|
|
1097 f (*rep); |
|
|
1098 } |
|
|
1099 else |
|
|
1100 { |
|
|
1101 type_conv_fcn cf = numeric_conversion_function (); |
|
|
1102 |
|
|
1103 if (cf) |
|
|
1104 { |
|
|
1105 octave_value *tmp = cf (*rep); |
|
|
1106 |
|
|
1107 if (tmp) |
|
|
1108 { |
|
|
1109 octave_value *old_rep = rep; |
|
|
1110 rep = tmp; |
|
|
1111 rep->count = 1; |
|
|
1112 |
|
|
1113 t = type_id (); |
|
|
1114 |
|
|
1115 f = octave_value_typeinfo::lookup_non_const_unary_op (op, t); |
|
|
1116 |
|
|
1117 if (f) |
|
|
1118 { |
|
|
1119 f (*rep); |
|
|
1120 |
|
|
1121 if (old_rep && --old_rep->count == 0) |
|
|
1122 delete old_rep; |
|
|
1123 } |
|
|
1124 else |
|
|
1125 { |
|
|
1126 if (old_rep) |
|
|
1127 { |
|
|
1128 if (--rep->count == 0) |
|
|
1129 delete rep; |
|
|
1130 |
|
|
1131 rep = old_rep; |
|
|
1132 } |
|
|
1133 |
|
|
1134 gripe_unary_op (octave_value::unary_op_as_string (op), |
|
|
1135 type_name ()); |
|
|
1136 } |
|
|
1137 } |
|
|
1138 else |
|
|
1139 gripe_unary_op_conversion_failed |
|
|
1140 (octave_value::unary_op_as_string (op), type_name ()); |
|
|
1141 } |
|
|
1142 else |
|
|
1143 gripe_unary_op (octave_value::unary_op_as_string (op), type_name ()); |
|
|
1144 } |
|
|
1145 } |
|
|
1146 |
|
2903
|
1147 // Current indentation. |
|
|
1148 int octave_value::curr_print_indent_level = 0; |
|
|
1149 |
|
3018
|
1150 // TRUE means we are at the beginning of a line. |
|
2903
|
1151 bool octave_value::beginning_of_line = true; |
|
|
1152 |
|
|
1153 // Each print() function should call this before printing anything. |
|
|
1154 // |
|
|
1155 // This doesn't need to be fast, but isn't there a better way? |
|
|
1156 |
|
|
1157 void |
|
|
1158 octave_value::indent (ostream& os) const |
|
|
1159 { |
|
|
1160 assert (curr_print_indent_level >= 0); |
|
|
1161 |
|
|
1162 if (beginning_of_line) |
|
|
1163 { |
|
|
1164 // XXX FIXME XXX -- do we need this? |
|
|
1165 // os << prefix; |
|
|
1166 |
|
|
1167 for (int i = 0; i < curr_print_indent_level; i++) |
|
|
1168 os << " "; |
|
|
1169 |
|
|
1170 beginning_of_line = false; |
|
|
1171 } |
|
|
1172 } |
|
|
1173 |
|
|
1174 // All print() functions should use this to print new lines. |
|
|
1175 |
|
|
1176 void |
|
|
1177 octave_value::newline (ostream& os) const |
|
|
1178 { |
|
|
1179 os << "\n"; |
|
|
1180 |
|
|
1181 beginning_of_line = true; |
|
|
1182 } |
|
|
1183 |
|
|
1184 // For ressetting print state. |
|
|
1185 |
|
|
1186 void |
|
|
1187 octave_value::reset (void) const |
|
|
1188 { |
|
|
1189 beginning_of_line = true; |
|
|
1190 curr_print_indent_level = 0; |
|
|
1191 } |
|
|
1192 |
|
2376
|
1193 void |
|
|
1194 install_types (void) |
|
|
1195 { |
|
|
1196 octave_base_value::register_type (); |
|
|
1197 octave_scalar::register_type (); |
|
|
1198 octave_complex::register_type (); |
|
|
1199 octave_matrix::register_type (); |
|
|
1200 octave_complex_matrix::register_type (); |
|
|
1201 octave_range::register_type (); |
|
2825
|
1202 octave_bool::register_type (); |
|
|
1203 octave_bool_matrix::register_type (); |
|
2376
|
1204 octave_char_matrix::register_type (); |
|
|
1205 octave_char_matrix_str::register_type (); |
|
|
1206 octave_struct::register_type (); |
|
2903
|
1207 octave_file::register_type (); |
|
2880
|
1208 octave_list::register_type (); |
|
2376
|
1209 octave_all_va_args::register_type (); |
|
|
1210 octave_magic_colon::register_type (); |
|
2974
|
1211 octave_builtin::register_type (); |
|
|
1212 octave_mapper::register_type (); |
|
|
1213 octave_user_function::register_type (); |
|
2376
|
1214 } |
|
|
1215 |
|
|
1216 static int |
|
|
1217 do_fortran_indexing (void) |
|
|
1218 { |
|
|
1219 Vdo_fortran_indexing = check_preference ("do_fortran_indexing"); |
|
|
1220 |
|
|
1221 liboctave_dfi_flag = Vdo_fortran_indexing; |
|
|
1222 |
|
|
1223 return 0; |
|
|
1224 } |
|
|
1225 |
|
|
1226 static int |
|
|
1227 implicit_str_to_num_ok (void) |
|
|
1228 { |
|
|
1229 Vimplicit_str_to_num_ok = check_preference ("implicit_str_to_num_ok"); |
|
|
1230 |
|
|
1231 return 0; |
|
|
1232 } |
|
|
1233 |
|
|
1234 static int |
|
|
1235 ok_to_lose_imaginary_part (void) |
|
|
1236 { |
|
|
1237 Vok_to_lose_imaginary_part = check_preference ("ok_to_lose_imaginary_part"); |
|
|
1238 |
|
|
1239 return 0; |
|
|
1240 } |
|
|
1241 |
|
|
1242 static int |
|
|
1243 prefer_column_vectors (void) |
|
|
1244 { |
|
|
1245 Vprefer_column_vectors |
|
|
1246 = check_preference ("prefer_column_vectors"); |
|
|
1247 |
|
|
1248 liboctave_pcv_flag = Vprefer_column_vectors; |
|
|
1249 |
|
|
1250 return 0; |
|
|
1251 } |
|
|
1252 |
|
|
1253 static int |
|
|
1254 print_answer_id_name (void) |
|
|
1255 { |
|
|
1256 Vprint_answer_id_name = check_preference ("print_answer_id_name"); |
|
|
1257 |
|
|
1258 return 0; |
|
|
1259 } |
|
|
1260 |
|
|
1261 static int |
|
|
1262 propagate_empty_matrices (void) |
|
|
1263 { |
|
|
1264 Vpropagate_empty_matrices = check_preference ("propagate_empty_matrices"); |
|
|
1265 |
|
|
1266 return 0; |
|
|
1267 } |
|
|
1268 |
|
|
1269 static int |
|
|
1270 resize_on_range_error (void) |
|
|
1271 { |
|
|
1272 Vresize_on_range_error = check_preference ("resize_on_range_error"); |
|
|
1273 |
|
|
1274 liboctave_rre_flag = Vresize_on_range_error; |
|
|
1275 |
|
|
1276 return 0; |
|
|
1277 } |
|
|
1278 |
|
|
1279 static int |
|
|
1280 struct_levels_to_print (void) |
|
|
1281 { |
|
|
1282 double val; |
|
|
1283 if (builtin_real_scalar_variable ("struct_levels_to_print", val) |
|
|
1284 && ! xisnan (val)) |
|
|
1285 { |
|
|
1286 int ival = NINT (val); |
|
2800
|
1287 if (ival >= 0 && ival == val) |
|
2376
|
1288 { |
|
|
1289 Vstruct_levels_to_print = ival; |
|
|
1290 return 0; |
|
|
1291 } |
|
|
1292 } |
|
|
1293 gripe_invalid_value_specified ("struct_levels_to_print"); |
|
|
1294 return -1; |
|
|
1295 } |
|
|
1296 |
|
|
1297 static int |
|
|
1298 warn_divide_by_zero (void) |
|
|
1299 { |
|
|
1300 Vwarn_divide_by_zero = check_preference ("warn_divide_by_zero"); |
|
|
1301 |
|
|
1302 return 0; |
|
|
1303 } |
|
|
1304 |
|
|
1305 void |
|
2909
|
1306 symbols_of_ov (void) |
|
2376
|
1307 { |
|
|
1308 DEFVAR (do_fortran_indexing, 0.0, 0, do_fortran_indexing, |
|
|
1309 "allow single indices for matrices"); |
|
|
1310 |
|
|
1311 DEFVAR (implicit_str_to_num_ok, 0.0, 0, implicit_str_to_num_ok, |
|
|
1312 "allow implicit string to number conversion"); |
|
|
1313 |
|
|
1314 DEFVAR (ok_to_lose_imaginary_part, "warn", 0, ok_to_lose_imaginary_part, |
|
|
1315 "silently convert from complex to real by dropping imaginary part"); |
|
|
1316 |
|
|
1317 DEFVAR (prefer_column_vectors, 1.0, 0, prefer_column_vectors, |
|
|
1318 "prefer column/row vectors"); |
|
|
1319 |
|
|
1320 DEFVAR (print_answer_id_name, 1.0, 0, print_answer_id_name, |
|
|
1321 "set output style to print `var_name = ...'"); |
|
|
1322 |
|
|
1323 DEFVAR (propagate_empty_matrices, 1.0, 0, propagate_empty_matrices, |
|
|
1324 "operations on empty matrices return an empty matrix, not an error"); |
|
|
1325 |
|
|
1326 DEFVAR (resize_on_range_error, 1.0, 0, resize_on_range_error, |
|
|
1327 "enlarge matrices on assignment"); |
|
|
1328 |
|
|
1329 DEFVAR (struct_levels_to_print, 2.0, 0, struct_levels_to_print, |
|
|
1330 "number of levels of structure elements to print"); |
|
|
1331 |
|
|
1332 DEFVAR (warn_divide_by_zero, 1.0, 0, warn_divide_by_zero, |
|
2957
|
1333 "if TRUE, warn about division by zero"); |
|
2376
|
1334 } |
|
|
1335 |
|
|
1336 /* |
|
|
1337 ;;; Local Variables: *** |
|
|
1338 ;;; mode: C++ *** |
|
|
1339 ;;; End: *** |
|
|
1340 */ |
