Mercurial > octave
annotate liboctave/util/lo-array-errwarn.cc @ 25806:0360ed7c39a8
Always print non-integer part of non-integer indices in invalid index message (bug #46859).
* lo-array-errwarn.cc (gripe_invalid_index): Detect when double value index will
be printed as an integer and show the fractional part in this case.
author | Lachlan Andrew <lachlanbis@gmail.com> |
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date | Thu, 14 Jan 2016 14:03:17 +1100 |
parents | 6652d3823428 |
children | cb775c73866d |
rev | line source |
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1 /* |
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2 |
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3 Copyright (C) 2016-2018 Rik Wehbring |
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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 |
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9 the Free Software Foundation, either version 3 of the License, or |
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10 (at your 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 |
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13 WITHOUT ANY WARRANTY; without even the implied warranty of |
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14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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15 GNU General Public License 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 <https://www.gnu.org/licenses/>. |
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20 |
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21 */ |
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22 |
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23 #if defined (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 <cmath> |
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28 |
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29 #include <sstream> |
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30 |
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31 #include "lo-array-errwarn.h" |
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32 #include "lo-error.h" |
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33 |
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34 // Text constants used to shorten code below. |
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35 static const char *error_id_nonconformant_args = "Octave:nonconformant-args"; |
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36 |
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37 static const char *error_id_index_out_of_bounds = "Octave:index-out-of-bounds"; |
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39 static const char *error_id_invalid_index = "Octave:invalid-index"; |
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40 |
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41 static const char *warning_id_nearly_singular_matrix = |
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42 "Octave:nearly-singular-matrix"; |
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43 |
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44 static const char *warning_id_singular_matrix = "Octave:singular-matrix"; |
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45 |
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46 namespace octave |
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47 { |
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48 void |
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49 err_nan_to_logical_conversion (void) |
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50 { |
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51 (*current_liboctave_error_handler) |
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52 ("invalid conversion from NaN to logical"); |
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53 } |
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54 |
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55 void |
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56 err_nan_to_character_conversion (void) |
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57 { |
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58 (*current_liboctave_error_handler) |
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59 ("invalid conversion from NaN to character"); |
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60 } |
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61 |
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62 void |
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63 err_nonconformant (const char *op, |
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64 octave_idx_type op1_len, octave_idx_type op2_len) |
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65 { |
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66 const char *err_id = error_id_nonconformant_args; |
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67 |
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68 (*current_liboctave_error_with_id_handler) |
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69 (err_id, "%s: nonconformant arguments (op1 len: %d, op2 len: %d)", |
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70 op, op1_len, op2_len); |
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71 } |
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72 |
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73 void |
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74 err_nonconformant (const char *op, |
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75 octave_idx_type op1_nr, octave_idx_type op1_nc, |
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76 octave_idx_type op2_nr, octave_idx_type op2_nc) |
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77 { |
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78 const char *err_id = error_id_nonconformant_args; |
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79 |
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80 (*current_liboctave_error_with_id_handler) |
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81 (err_id, "%s: nonconformant arguments (op1 is %dx%d, op2 is %dx%d)", |
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82 op, op1_nr, op1_nc, op2_nr, op2_nc); |
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83 } |
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84 |
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85 void |
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86 err_nonconformant (const char *op, |
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87 const dim_vector& op1_dims, const dim_vector& op2_dims) |
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88 { |
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89 const char *err_id = error_id_nonconformant_args; |
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90 |
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91 std::string op1_dims_str = op1_dims.str (); |
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92 std::string op2_dims_str = op2_dims.str (); |
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93 |
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94 (*current_liboctave_error_with_id_handler) |
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95 (err_id, "%s: nonconformant arguments (op1 is %s, op2 is %s)", |
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96 op, op1_dims_str.c_str (), op2_dims_str.c_str ()); |
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97 } |
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98 |
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99 void |
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100 err_del_index_out_of_range (bool is1d, octave_idx_type idx, |
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101 octave_idx_type ext) |
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102 { |
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103 const char *err_id = error_id_index_out_of_bounds; |
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104 |
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105 (*current_liboctave_error_with_id_handler) |
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106 (err_id, "A(%s) = []: index out of bounds: value %d out of bound %d", |
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107 is1d ? "I" : "..,I,..", idx, ext); |
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108 } |
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109 |
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110 // Common procedures of base class index_exception, thrown whenever an |
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111 // object is indexed incorrectly, such as by an index that is out of |
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112 // range, negative, fractional, complex, or of a non-numeric type. |
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113 |
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114 std::string |
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115 index_exception::message (void) const |
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116 { |
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117 std::string msg = expression () + ": " + details (); |
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118 return msg.c_str (); |
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119 } |
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120 |
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121 // Show the expression that caused the error, e.g., "A(-1,_)", |
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122 // "A(0+1i)", "A(_,3)". Show how many indices come before/after the |
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123 // offending one, e.g., (<error>), (<error>,_), or (_,<error>,...[x5]...) |
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124 |
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125 std::string |
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126 index_exception::expression (void) const |
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127 { |
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128 std::ostringstream buf; |
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129 |
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130 if (var.empty () || var == "<unknown>") |
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131 buf << "index "; |
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132 else |
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133 buf << var; |
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134 |
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135 bool show_parens = dim > 0; |
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136 |
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137 if (show_parens) |
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138 { |
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139 if (dim < 5) |
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140 { |
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141 buf << '('; |
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142 |
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143 for (octave_idx_type i = 1; i < dim; i++) |
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144 buf << "_,"; |
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145 } |
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146 else |
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147 buf << "(...[x" << dim - 1 << "]..."; |
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148 } |
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149 |
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150 buf << idx (); |
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151 |
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152 if (show_parens) |
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153 { |
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154 if (nd - dim < 5) |
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155 { |
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156 for (octave_idx_type i = 0; i < nd - dim; i++) |
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157 buf << ",_"; |
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158 |
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159 if (nd >= dim) |
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160 buf << ')'; |
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161 } |
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162 else |
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163 buf << "...[x" << nd - dim << "]...)"; |
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164 } |
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165 |
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166 return buf.str (); |
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167 } |
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168 |
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169 class invalid_index : public index_exception |
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170 { |
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171 public: |
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172 |
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173 invalid_index (const std::string& value, octave_idx_type ndim, |
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174 octave_idx_type dimen) |
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175 : index_exception (value, ndim, dimen) |
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176 { } |
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177 |
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178 std::string details (void) const |
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179 { |
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180 #if defined (OCTAVE_ENABLE_64) |
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181 return "subscripts must be either integers 1 to (2^63)-1 or logicals"; |
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182 #else |
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183 return "subscripts must be either integers 1 to (2^31)-1 or logicals"; |
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184 #endif |
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185 } |
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186 |
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187 // ID of error to throw |
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188 const char * err_id (void) const |
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189 { |
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190 return error_id_invalid_index; |
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191 } |
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192 }; |
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193 |
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194 // Complain if an index is negative, fractional, or too big. |
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195 |
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196 void |
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197 err_invalid_index (const std::string& idx, octave_idx_type nd, |
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198 octave_idx_type dim, const std::string&) |
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199 { |
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200 invalid_index e (idx, nd, dim); |
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201 |
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202 throw e; |
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203 } |
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204 |
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205 void |
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206 err_invalid_index (octave_idx_type n, octave_idx_type nd, |
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207 octave_idx_type dim, const std::string& var) |
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208 { |
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209 std::ostringstream buf; |
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210 buf << n + 1; |
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211 err_invalid_index (buf.str (), nd, dim, var); |
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212 } |
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213 |
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214 void |
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215 err_invalid_index (double n, octave_idx_type nd, octave_idx_type dim, |
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216 const std::string& var) |
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217 { |
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218 std::ostringstream buf; |
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219 buf << n + 1; |
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220 // if n not an integer, but would be printed as one, show diff |
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221 double nearest = std::floor (n + 1.5); |
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222 if (n + 1 != nearest && (buf.str ().find ('.') == std::string::npos)) |
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223 buf << std::showpos << (n + 1 - nearest); |
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224 |
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225 err_invalid_index (buf.str (), nd, dim, var); |
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226 } |
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227 |
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228 // Complain for read access beyond the bounds of an array. |
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229 |
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230 class out_of_range : public index_exception |
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231 { |
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232 public: |
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233 |
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234 out_of_range (const std::string& value, octave_idx_type nd_in, |
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235 octave_idx_type dim_in) |
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236 : index_exception (value, nd_in, dim_in), extent (0) |
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237 { } |
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238 |
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239 std::string details (void) const |
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240 { |
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241 std::string expl; |
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242 |
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243 if (nd >= size.ndims ()) // if not an index slice |
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244 { |
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245 if (var != "") |
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246 expl = "but " + var + " has size "; |
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247 else |
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248 expl = "but object has size "; |
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249 |
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250 expl = expl + size.str ('x'); |
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251 } |
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252 else |
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253 { |
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254 std::ostringstream buf; |
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255 buf << extent; |
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256 expl = "out of bound " + buf.str (); |
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257 } |
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258 |
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259 return expl; |
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260 } |
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261 |
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262 // ID of error to throw. |
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263 const char * err_id (void) const |
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264 { |
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265 return error_id_index_out_of_bounds; |
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266 } |
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267 |
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268 void set_size (const dim_vector& size_in) { size = size_in; } |
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269 |
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270 void set_extent (octave_idx_type ext) { extent = ext; } |
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271 |
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272 private: |
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273 |
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274 // Dimension of object being accessed. |
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275 dim_vector size; |
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276 |
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277 // Length of dimension being accessed. |
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278 octave_idx_type extent; |
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279 }; |
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280 |
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281 // Complain of an index that is out of range, but we don't know matrix size |
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282 void |
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283 err_index_out_of_range (int nd, int dim, octave_idx_type idx, |
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284 octave_idx_type ext) |
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285 { |
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286 std::ostringstream buf; |
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287 buf << idx; |
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288 out_of_range e (buf.str (), nd, dim); |
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289 |
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290 e.set_extent (ext); |
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291 // ??? Make details method give extent not size. |
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292 e.set_size (dim_vector (1, 1, 1, 1, 1, 1,1)); |
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293 |
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294 throw e; |
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295 } |
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296 |
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297 // Complain of an index that is out of range |
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298 void |
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299 err_index_out_of_range (int nd, int dim, octave_idx_type idx, |
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300 octave_idx_type ext, const dim_vector& d) |
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301 { |
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302 std::ostringstream buf; |
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303 buf << idx; |
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304 out_of_range e (buf.str (), nd, dim); |
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305 |
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306 e.set_extent (ext); |
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307 e.set_size (d); |
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308 |
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309 throw e; |
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310 } |
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311 |
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312 void |
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313 err_invalid_resize (void) |
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314 { |
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315 (*current_liboctave_error_with_id_handler) |
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316 ("Octave:invalid-resize", |
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317 "Invalid resizing operation or ambiguous assignment to an out-of-bounds array element"); |
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318 } |
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319 |
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320 void |
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321 warn_singular_matrix (double rcond) |
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322 { |
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323 if (rcond == 0.0) |
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324 { |
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325 (*current_liboctave_warning_with_id_handler) |
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326 (warning_id_singular_matrix, |
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327 "matrix singular to machine precision"); |
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328 } |
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329 else |
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330 { |
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331 (*current_liboctave_warning_with_id_handler) |
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332 (warning_id_nearly_singular_matrix, |
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333 "matrix singular to machine precision, rcond = %g", rcond); |
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334 } |
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335 } |
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336 } |
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337 |
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338 /* Tests in test/index.tst */ |