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annotate liboctave/util/lo-array-gripes.cc @ 20652:7a8096f8df5d

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more cleanup of indexing exceptions * data.cc (index_error): New function. (Fnth_element, F__accumarray_sum__, __accumdim_sum__): Use it. * lo-array-gripes.h, lo-array-gripes.cc (index_exception::message): Rename from index_exception::err. Return std::string instead of const char *. Change all uses. (index_exception::expression): Rename from index_exception::access. (index_exception::index_exception, invalid_index::invalid_index, out_of_range::out_of_range): Accept const string& instead of const char *. Change all uses. (invalid_index::details): Rename from invalid_index::explain. Return std::string instead of const char *. Change all uses. (invalid_index::err_idx): Rename from invalid_index::id. Return std::string instead of const char *. Change all uses. (gripe_invalid_index): Accept const std::string& argument instead of const char *. (index_exception::~index_exception): Don't declare with "throw ()". (index_exception::details): Rename from index_exception::explain. Return std::string instead of const char *. Change all uses. (index_exception::err_idx): Rename from index_exception::id. Return std::string instead of const char *. Change all uses. (index_exception::idx): Return std::string instead of const char *. Change all uses. (index_exception::err_id): Rename from index_exception::id. (index_exception::msg): Delete member variable. (index_expression::expression): Rename from index_expression::access. Change all uses.
author John W. Eaton <jwe@octave.org>
date Wed, 21 Oct 2015 23:43:46 -0400
parents c1d94e5cd5ea
children c16947991354
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1 /*
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2
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4197fc428c7d maint: Update copyright notices for 2015.
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3 Copyright (C) 2003-2015 John W. Eaton
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4 Copyright (C) 2009 VZLU Prague
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5
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6 This file is part of Octave.
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7
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8 Octave is free software; you can redistribute it and/or modify it
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9 under the terms of the GNU General Public License as published by the
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10 Free Software Foundation; either version 3 of the License, or (at your
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11 option) any later version.
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12
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13 Octave is distributed in the hope that it will be useful, but WITHOUT
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14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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16 for more details.
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17
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18 You should have received a copy of the GNU General Public License
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19 along with Octave; see the file COPYING. If not, see
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20 <http://www.gnu.org/licenses/>.
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21
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22 */
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23
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24 #ifdef HAVE_CONFIG_H
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25 #include <config.h>
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26 #endif
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27
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28 #include <cstring>
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29
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30 #include "lo-array-gripes.h"
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31 #include "lo-error.h"
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32
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33 const char *error_id_nonconformant_args = "Octave:nonconformant-args";
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34
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35 const char *error_id_index_out_of_bounds = "Octave:index-out-of-bounds";
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36
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37 const char *error_id_invalid_index = "Octave:invalid-index";
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38
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39 const char *warning_id_nearly_singular_matrix = "Octave:nearly-singular-matrix";
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40
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41 const char *warning_id_singular_matrix = "Octave:singular-matrix";
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42
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43 void
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44 gripe_nan_to_logical_conversion (void)
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45 {
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46 (*current_liboctave_error_handler)
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47 ("invalid conversion from NaN to logical");
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48 }
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49
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50 void
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51 gripe_nan_to_character_conversion (void)
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52 {
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53 (*current_liboctave_error_handler)
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54 ("invalid conversion from NaN to character");
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55 }
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56
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57 void
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58 gripe_nonconformant (const char *op, octave_idx_type op1_len,
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59 octave_idx_type op2_len)
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60 {
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61 const char *err_id = error_id_nonconformant_args;
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62
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63 (*current_liboctave_error_with_id_handler)
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64 (err_id, "%s: nonconformant arguments (op1 len: %d, op2 len: %d)",
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65 op, op1_len, op2_len);
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66 }
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67
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68 void
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69 gripe_nonconformant (const char *op,
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70 octave_idx_type op1_nr, octave_idx_type op1_nc,
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71 octave_idx_type op2_nr, octave_idx_type op2_nc)
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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 is %dx%d, op2 is %dx%d)",
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77 op, op1_nr, op1_nc, op2_nr, op2_nc);
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78 }
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79
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80 void
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81 gripe_nonconformant (const char *op, const dim_vector& op1_dims,
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82 const dim_vector& op2_dims)
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83 {
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84 const char *err_id = error_id_nonconformant_args;
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85
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86 std::string op1_dims_str = op1_dims.str ();
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87 std::string op2_dims_str = op2_dims.str ();
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88
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89 (*current_liboctave_error_with_id_handler)
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90 (err_id, "%s: nonconformant arguments (op1 is %s, op2 is %s)",
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91 op, op1_dims_str.c_str (), op2_dims_str.c_str ());
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92 }
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93
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94 void
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95 gripe_del_index_out_of_range (bool is1d, octave_idx_type idx,
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96 octave_idx_type ext)
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97 {
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98 const char *err_id = error_id_index_out_of_bounds;
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99
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100 (*current_liboctave_error_with_id_handler)
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101 (err_id, "A(%s) = []: index out of bounds; value %d out of bound %d",
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102 is1d ? "I" : "..,I,..", idx, ext);
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103 }
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104
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105
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106
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107 // Common procedures of base class index_exception, thrown whenever an
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108 // object is indexed incorrectly, such as by an index that is out of
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109 // range, negative, fractional, complex, or of a non-numeric type.
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110
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111 std::string
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112 index_exception::message (void) const
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113 {
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114 std::string msg = expression () + "; " + details ();
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115 return msg.c_str ();
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116 }
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117
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118 // Show the expression that caused the error, e.g., "A(-1,_)",
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119 // "A(0+1i)", "A(_,3)". Show how many indices come before/after the
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120 // offending one, e.g., (<error>), (<error>,_), or (_,<error>,...[x5]...)
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121
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122 std::string
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123 index_exception::expression (void) const
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124 {
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125 // FIXME: don't use a fixed size buffer!
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126 const int buf_len = 300;
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127
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128 char output [buf_len];
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129 char pre [buf_len];
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130 char post [buf_len];
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131
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132 // dim == 0 if position not yet given, or
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133 // <static_cast unsigned int>(-1) if explicitly shown to be unknown
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134 // both are caught by this condition
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135
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136 if (static_cast <unsigned int> (dim-1) > 100000)
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137 {
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138 // No parentheses are given if the dimension is not known.
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139 pre[0] = post[0] = '\0';
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140 }
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141 else
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142 {
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143 if (dim < 5)
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144 {
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145 pre[0] = '(';
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146 octave_idx_type i;
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147
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148 for (i = 1; i < dim; i++)
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149 {
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150 pre[2*i-1] = '_';
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151 pre[2*i] = ',';
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152 }
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153
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154 pre[2*i-1] = '\0'; // i == min (1, dim)
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155 }
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156 else
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157 {
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158 sprintf (pre, "(...[x%d]...", dim-1);
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159 }
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160
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161 if (static_cast <unsigned int> (nd-dim) < 5)
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162 {
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163 for (octave_idx_type i = 0; i < nd-dim; i++)
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164 {
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165 post[2*i] = ',';
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166 post[2*i+1] = '_';
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167 }
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168
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169 if (nd >= dim)
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170 {
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171 post[2*(nd-dim)] = ')';
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172 post[2*(nd-dim)+1] = '\0';
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173 }
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174 }
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175 else
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176 sprintf (post, "...[x%d]...)", nd-dim);
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177 }
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178
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179 const char *v;
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180
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181 if (var[0] == '\0' || var == "<unknown>")
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182 v = "index ";
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183 else
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184 v = var.c_str ();
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185
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186 std::string tmp_idx = idx ();
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187 snprintf (output, buf_len, "%s%s%s%s", v, pre, tmp_idx.c_str (), post);
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188
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189 return output;
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190 }
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191
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192 class invalid_index : public index_exception
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193 {
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194 public:
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195
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196 invalid_index (const std::string& value, octave_idx_type ndim,
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197 octave_idx_type dimen)
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198 : index_exception (value, ndim, dimen)
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199 { }
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200
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201 std::string details (void) const
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202 {
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203 #ifdef USE_64_BIT_IDX_T
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204 return "subscripts must be either integers 1 to (2^63)-1 or logicals";
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205 #else
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206 return "subscripts must be either integers 1 to (2^31)-1 or logicals";
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207 #endif
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208 }
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209
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210 // ID of error to throw
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211 const char *err_id (void) const
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212 {
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213 return error_id_invalid_index;
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214 }
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215 };
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216
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217 // Complain if an index is negative, fractional, or too big.
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218
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219 void
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220 gripe_invalid_index (const std::string& idx, octave_idx_type nd,
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221 octave_idx_type dim, const std::string&)
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222 {
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223 invalid_index e (idx, nd, dim);
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224
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225 throw e;
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226 }
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227
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228 void
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229 gripe_invalid_index (octave_idx_type n, octave_idx_type nd,
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230 octave_idx_type dim, const std::string& var)
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231 {
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232 // Note: log10 (2^63) = 19 digits.
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233 char buf[64];
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234
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235 sprintf (buf, "%d", n+1);
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236
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237 gripe_invalid_index (buf, nd, dim, var);
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238 }
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239
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240 void
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241 gripe_invalid_index (double n, octave_idx_type nd, octave_idx_type dim,
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242 const std::string& var)
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243 {
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244 char buf[64];
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245
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246 sprintf (buf, "%g", n+1);
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247
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248 gripe_invalid_index (buf, nd, dim, var);
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249 }
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250
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251
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252 // Gripe and exception for read access beyond the bounds of an array.
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253
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254 class out_of_range : public index_exception
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255 {
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256 public:
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257
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258 out_of_range (const std::string& value, octave_idx_type nd_in,
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259 octave_idx_type dim_in)
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260 : index_exception (value, nd_in, dim_in), extent (0)
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261 { }
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262
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263 std::string details (void) const
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264 {
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265 std::string expl;
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266
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267 if (nd >= size.length ()) // if not an index slice
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268 {
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269 if (var != "")
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270 expl = "but " + var + " has size ";
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271 else
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272 expl = "but object has size ";
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273
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274 expl = expl + size.str ('x');
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275 }
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276 else
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277 {
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278 char buf[64];
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279 sprintf (buf, "%d", extent);
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280 expl = "out of bound " + std::string (buf);
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281 }
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282
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283 return expl;
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284 }
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285
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286 // ID of error to throw.
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287 const char *err_id (void) const
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288 {
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289 return error_id_index_out_of_bounds;
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290 }
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291
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292 void set_size (const dim_vector& size_in) { size = size_in; }
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293
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294 void set_extent (octave_idx_type ext) { extent = ext; }
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295
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296 private:
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297
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298 dim_vector size; // dimension of object being accessed
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299
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300 octave_idx_type extent; // length of dimension being accessed
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301 };
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302
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303 // Complain of an index that is out of range, but we don't know matrix size
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304 void
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305 gripe_index_out_of_range (int nd, int dim, octave_idx_type idx,
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306 octave_idx_type ext)
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307 {
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308 char buf[64];
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309 sprintf (buf, "%d", idx);
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310 out_of_range e (buf, nd, dim);
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311
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312 e.set_extent (ext);
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313 dim_vector d (1,1,1,1,1,1,1); // make explain give extent not size
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314 e.set_size (d);
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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 gripe_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 char buf[64];
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324 sprintf (buf, "%d", idx);
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325 out_of_range e (buf, 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 throw e;
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330 }
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331
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332 void
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333 gripe_invalid_resize (void)
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334 {
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335 (*current_liboctave_error_with_id_handler)
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336 ("Octave:invalid-resize",
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337 "Invalid resizing operation or ambiguous assignment to an out-of-bounds array element");
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338 }
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339
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340 void
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341 gripe_singular_matrix (double rcond)
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342 {
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343 if (rcond == 0.0)
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344 {
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345 (*current_liboctave_warning_with_id_handler)
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346 (warning_id_singular_matrix,
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347 "matrix singular to machine precision");
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348 }
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349 else
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350 {
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351 (*current_liboctave_warning_with_id_handler)
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352 (warning_id_nearly_singular_matrix,
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353 "matrix singular to machine precision, rcond = %g", rcond);
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354 }
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355 }
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356
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357 /* Tests in test/index.tst */