Mercurial > octave
annotate liboctave/util/lo-array-errwarn.cc @ 27997:e90e3155cd01
derive execution_exception from std::exception
* quit.h (class execution_exception): Derive from std::exception.
(execution_exception::what): New method.
* lo-array-errwarn.h, lo-array-errwarn.cc (index_exception::what):
New method.
author | John W. Eaton <jwe@octave.org> |
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date | Thu, 23 Jan 2020 16:22:27 -0500 |
parents | 1998edbd4490 |
children | 60d8d6e5594d |
rev | line source |
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1 //////////////////////////////////////////////////////////////////////// |
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2 // |
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3 // Copyright (C) 2016-2020 The Octave Project Developers |
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4 // |
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5 // See the file COPYRIGHT.md in the top-level directory of this |
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6 // distribution or <https://octave.org/copyright/>. |
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7 // |
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8 // This file is part of Octave. |
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9 // |
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10 // Octave is free software: you can redistribute it and/or modify it |
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11 // under the terms of the GNU General Public License as published by |
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12 // the Free Software Foundation, either version 3 of the License, or |
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13 // (at your option) any later version. |
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14 // |
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15 // Octave is distributed in the hope that it will be useful, but |
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16 // WITHOUT ANY WARRANTY; without even the implied warranty of |
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17 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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18 // GNU General Public License for more details. |
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19 // |
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20 // You should have received a copy of the GNU General Public License |
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21 // along with Octave; see the file COPYING. If not, see |
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22 // <https://www.gnu.org/licenses/>. |
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23 // |
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24 //////////////////////////////////////////////////////////////////////// |
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25 |
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26 #if defined (HAVE_CONFIG_H) |
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27 # include "config.h" |
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28 #endif |
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29 |
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30 #include <cinttypes> |
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31 #include <cmath> |
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32 |
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33 #include <sstream> |
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34 |
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35 #include "lo-array-errwarn.h" |
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36 #include "lo-error.h" |
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37 |
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38 namespace octave |
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39 { |
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40 // Text constants used to shorten code below. |
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41 |
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42 static const char *error_id_nonconformant_args |
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43 = "Octave:nonconformant-args"; |
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44 |
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45 static const char *error_id_index_out_of_bounds |
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46 = "Octave:index-out-of-bounds"; |
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47 |
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48 static const char *error_id_invalid_index = "Octave:invalid-index"; |
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49 |
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50 static const char *warning_id_nearly_singular_matrix |
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51 = "Octave:nearly-singular-matrix"; |
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52 |
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53 static const char *warning_id_singular_matrix = "Octave:singular-matrix"; |
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54 |
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55 void |
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56 err_nan_to_logical_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 logical"); |
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60 } |
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61 |
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62 void |
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63 err_nan_to_character_conversion (void) |
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64 { |
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65 (*current_liboctave_error_handler) |
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66 ("invalid conversion from NaN to character"); |
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67 } |
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68 |
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69 void |
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70 err_nonconformant (const char *op, |
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71 octave_idx_type op1_len, octave_idx_type op2_len) |
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72 { |
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73 const char *err_id = error_id_nonconformant_args; |
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74 |
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75 (*current_liboctave_error_with_id_handler) |
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76 (err_id, "%s: nonconformant arguments (op1 len: %" OCTAVE_IDX_TYPE_FORMAT |
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77 ", op2 len: % " OCTAVE_IDX_TYPE_FORMAT ")", |
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78 op, op1_len, op2_len); |
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79 } |
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80 |
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81 void |
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82 err_nonconformant (const char *op, |
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83 octave_idx_type op1_nr, octave_idx_type op1_nc, |
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84 octave_idx_type op2_nr, octave_idx_type op2_nc) |
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85 { |
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86 const char *err_id = error_id_nonconformant_args; |
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87 |
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88 (*current_liboctave_error_with_id_handler) |
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89 (err_id, "%s: nonconformant arguments " |
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90 "(op1 is %" OCTAVE_IDX_TYPE_FORMAT "x%" OCTAVE_IDX_TYPE_FORMAT ", " |
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91 "op2 is %" OCTAVE_IDX_TYPE_FORMAT"x%" OCTAVE_IDX_TYPE_FORMAT ")", |
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92 op, op1_nr, op1_nc, op2_nr, op2_nc); |
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93 } |
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94 |
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95 void |
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96 err_nonconformant (const char *op, |
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97 const dim_vector& op1_dims, const dim_vector& op2_dims) |
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98 { |
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99 const char *err_id = error_id_nonconformant_args; |
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100 |
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101 std::string op1_dims_str = op1_dims.str (); |
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102 std::string op2_dims_str = op2_dims.str (); |
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103 |
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104 (*current_liboctave_error_with_id_handler) |
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105 (err_id, "%s: nonconformant arguments (op1 is %s, op2 is %s)", |
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106 op, op1_dims_str.c_str (), op2_dims_str.c_str ()); |
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107 } |
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108 |
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109 void |
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110 err_del_index_out_of_range (bool is1d, octave_idx_type idx, |
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111 octave_idx_type ext) |
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112 { |
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113 const char *err_id = error_id_index_out_of_bounds; |
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114 |
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115 (*current_liboctave_error_with_id_handler) |
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116 (err_id, "A(%s) = []: index out of bounds: value %" OCTAVE_IDX_TYPE_FORMAT |
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117 " out of bound %" OCTAVE_IDX_TYPE_FORMAT, |
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118 is1d ? "I" : "..,I,..", idx, ext); |
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119 } |
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120 |
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121 // Common procedures of base class index_exception, thrown whenever an |
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122 // object is indexed incorrectly, such as by an index that is out of |
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123 // range, negative, fractional, complex, or of a non-numeric type. |
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124 |
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125 std::string |
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126 index_exception::message (void) const |
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127 { |
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128 return expression () + ": " + details (); |
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129 } |
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130 |
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131 const char * index_exception::what (void) const noexcept |
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132 { |
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133 std::string tmp = message (); |
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134 |
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135 return tmp.c_str (); |
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136 } |
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137 |
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138 // Show the expression that caused the error, e.g., "A(-1,_)", |
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139 // "A(0+1i)", "A(_,3)". Show how many indices come before/after the |
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140 // offending one, e.g., (<error>), (<error>,_), or (_,<error>,...[x5]...) |
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141 |
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142 std::string |
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143 index_exception::expression (void) const |
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144 { |
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145 std::ostringstream buf; |
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146 |
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147 if (m_var.empty () || m_var == "<unknown>") |
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148 buf << "index "; |
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149 else |
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150 buf << m_var; |
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151 |
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152 bool show_parens = m_dim > 0; |
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153 |
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154 if (show_parens) |
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155 { |
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156 if (m_dim < 5) |
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157 { |
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158 buf << '('; |
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159 |
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160 for (octave_idx_type i = 1; i < m_dim; i++) |
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161 buf << "_,"; |
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162 } |
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163 else |
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164 buf << "(...[x" << m_dim - 1 << "]..."; |
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165 } |
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166 |
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167 buf << idx (); |
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168 |
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169 if (show_parens) |
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170 { |
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171 if (m_nd - m_dim < 5) |
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172 { |
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173 for (octave_idx_type i = 0; i < m_nd - m_dim; i++) |
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174 buf << ",_"; |
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175 |
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176 if (m_nd >= m_dim) |
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177 buf << ')'; |
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178 } |
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179 else |
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180 buf << "...[x" << m_nd - m_dim << "]...)"; |
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181 } |
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182 |
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183 return buf.str (); |
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184 } |
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185 |
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186 class invalid_index : public index_exception |
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187 { |
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188 public: |
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189 |
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190 invalid_index (const std::string& value, octave_idx_type ndim, |
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191 octave_idx_type dimen) |
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192 : index_exception (value, ndim, dimen) |
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193 { } |
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194 |
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195 std::string details (void) const |
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196 { |
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197 #if defined (OCTAVE_ENABLE_64) |
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198 return "subscripts must be either integers 1 to (2^63)-1 or logicals"; |
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199 #else |
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200 return "subscripts must be either integers 1 to (2^31)-1 or logicals"; |
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201 #endif |
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202 } |
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203 |
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204 // ID of error to throw |
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205 const char * err_id (void) const |
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206 { |
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207 return error_id_invalid_index; |
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208 } |
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209 }; |
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210 |
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211 // Complain if an index is negative, fractional, or too big. |
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212 |
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213 void |
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214 err_invalid_index (const std::string& idx, octave_idx_type nd, |
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215 octave_idx_type dim, const std::string&) |
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216 { |
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217 invalid_index e (idx, nd, dim); |
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218 |
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219 throw e; |
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220 } |
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221 |
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222 void |
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223 err_invalid_index (octave_idx_type n, octave_idx_type nd, |
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224 octave_idx_type dim, const std::string& var) |
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225 { |
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226 std::ostringstream buf; |
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227 buf << n + 1; |
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228 err_invalid_index (buf.str (), nd, dim, var); |
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229 } |
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230 |
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231 void |
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232 err_invalid_index (double n, octave_idx_type nd, octave_idx_type dim, |
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233 const std::string& var) |
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234 { |
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235 std::ostringstream buf; |
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236 buf << n + 1; |
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237 |
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238 if (! std::isnan (n)) |
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239 { |
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240 // if n not an integer, but would be printed as one, show diff |
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241 double nearest = std::floor (n + 1.5); |
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242 if (n + 1 != nearest && (buf.str ().find ('.') == std::string::npos)) |
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243 buf << std::showpos << (n + 1 - nearest); |
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244 } |
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245 |
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246 err_invalid_index (buf.str (), nd, dim, var); |
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247 } |
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248 |
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249 // Complain for read access beyond the bounds of an array. |
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250 |
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251 class out_of_range : public index_exception |
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252 { |
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253 public: |
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254 |
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255 out_of_range (const std::string& value, octave_idx_type nd_in, |
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256 octave_idx_type dim_in) |
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257 : index_exception (value, nd_in, dim_in), m_size (), m_extent (0) |
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258 { } |
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259 |
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260 std::string details (void) const |
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261 { |
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262 std::string expl; |
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263 |
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264 if (m_nd >= m_size.ndims ()) // if not an index slice |
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265 { |
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266 if (m_var != "") |
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267 expl = "but " + m_var + " has size "; |
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268 else |
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269 expl = "but object has size "; |
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270 |
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271 expl = expl + m_size.str ('x'); |
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272 } |
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273 else |
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274 { |
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275 std::ostringstream buf; |
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276 buf << m_extent; |
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277 expl = "out of bound " + buf.str (); |
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278 } |
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279 |
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280 return expl; |
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281 } |
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282 |
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283 // ID of error to throw. |
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284 const char * err_id (void) const |
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285 { |
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286 return error_id_index_out_of_bounds; |
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287 } |
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288 |
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289 void set_size (const dim_vector& size_in) { m_size = size_in; } |
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290 |
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291 void set_extent (octave_idx_type ext) { m_extent = ext; } |
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292 |
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293 private: |
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294 |
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295 // Dimension of object being accessed. |
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296 dim_vector m_size; |
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297 |
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298 // Length of dimension being accessed. |
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299 octave_idx_type m_extent; |
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300 }; |
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301 |
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302 // Complain of an index that is out of range, but we don't know matrix size |
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303 void |
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304 err_index_out_of_range (int nd, int dim, octave_idx_type idx, |
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305 octave_idx_type ext) |
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306 { |
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307 std::ostringstream buf; |
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308 buf << idx; |
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309 out_of_range e (buf.str (), nd, dim); |
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310 |
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311 e.set_extent (ext); |
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312 // ??? Make details method give extent not size. |
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313 e.set_size (dim_vector (1, 1, 1, 1, 1, 1,1)); |
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314 |
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315 throw e; |
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316 } |
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317 |
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318 // Complain of an index that is out of range |
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319 void |
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320 err_index_out_of_range (int nd, int dim, octave_idx_type idx, |
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321 octave_idx_type ext, const dim_vector& d) |
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322 { |
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323 std::ostringstream buf; |
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324 buf << idx; |
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325 out_of_range e (buf.str (), nd, dim); |
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326 |
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327 e.set_extent (ext); |
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328 e.set_size (d); |
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329 |
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330 throw e; |
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331 } |
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332 |
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333 void |
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334 err_invalid_resize (void) |
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335 { |
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336 (*current_liboctave_error_with_id_handler) |
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337 ("Octave:invalid-resize", |
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338 "Invalid resizing operation or ambiguous assignment to an out-of-bounds array element"); |
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339 } |
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340 |
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341 void |
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342 warn_singular_matrix (double rcond) |
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343 { |
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344 if (rcond == 0.0) |
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345 { |
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346 (*current_liboctave_warning_with_id_handler) |
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347 (warning_id_singular_matrix, |
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348 "matrix singular to machine precision"); |
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349 } |
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350 else |
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351 { |
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352 (*current_liboctave_warning_with_id_handler) |
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353 (warning_id_nearly_singular_matrix, |
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354 "matrix singular to machine precision, rcond = %g", rcond); |
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355 } |
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356 } |
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357 } |
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358 |
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359 /* Tests in test/index.tst */ |