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update Octave Project Developers copyright for the new year
author John W. Eaton <jwe@octave.org>
date Fri, 06 Jan 2023 13:11:27 -0500
parents aac27ad79be6
children 2e484f9f1f18
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1 ////////////////////////////////////////////////////////////////////////
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2 //
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3 // Copyright (C) 1996-2023 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 "error.h"
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31 #include "input.h"
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32 #include "ov-usr-fcn.h"
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33 #include "pt-all.h"
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34
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35 OCTAVE_BEGIN_NAMESPACE(octave)
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36
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37 void
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38 tree_checker::visit_argument_list (tree_argument_list& lst)
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39 {
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40 auto p = lst.begin ();
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41
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42 while (p != lst.end ())
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43 {
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44 tree_expression *elt = *p++;
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45
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46 if (elt)
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47 {
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48 if (m_do_lvalue_check && ! elt->lvalue_ok ())
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49 errmsg ("invalid lvalue in multiple assignment", elt->line ());
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50 }
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51 }
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52 }
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53
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54 void
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55 tree_checker::visit_simple_for_command (tree_simple_for_command& cmd)
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56 {
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57 tree_expression *lhs = cmd.left_hand_side ();
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58
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59 if (lhs)
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60 {
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61 if (! lhs->lvalue_ok ())
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62 errmsg ("invalid lvalue in for command", cmd.line ());
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63 }
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64
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65 tree_expression *expr = cmd.control_expr ();
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66
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67 if (expr)
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68 expr->accept (*this);
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69
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70 tree_expression *maxproc = cmd.maxproc_expr ();
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71
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72 if (maxproc)
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73 maxproc->accept (*this);
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74
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75 tree_statement_list *list = cmd.body ();
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77 if (list)
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78 list->accept (*this);
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79 }
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81 void
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82 tree_checker::visit_complex_for_command (tree_complex_for_command& cmd)
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83 {
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84 tree_argument_list *lhs = cmd.left_hand_side ();
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85
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86 if (lhs)
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87 {
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88 int len = lhs->length ();
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89
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90 if (len == 0 || len > 2)
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91 errmsg ("invalid number of output arguments in for command",
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92 cmd.line ());
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93
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94 m_do_lvalue_check = true;
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95
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96 lhs->accept (*this);
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97
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98 m_do_lvalue_check = false;
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99 }
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100
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101 tree_expression *expr = cmd.control_expr ();
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102
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103 if (expr)
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104 expr->accept (*this);
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105
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106 tree_statement_list *list = cmd.body ();
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107
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108 if (list)
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109 list->accept (*this);
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110 }
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111
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112 void
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113 tree_checker::visit_multi_assignment (tree_multi_assignment& expr)
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114 {
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115 tree_argument_list *lhs = expr.left_hand_side ();
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116
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117 if (lhs)
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118 {
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119 m_do_lvalue_check = true;
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120
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121 lhs->accept (*this);
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122
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123 m_do_lvalue_check = false;
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124 }
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125
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126 tree_expression *rhs = expr.right_hand_side ();
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127
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128 if (rhs)
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129 rhs->accept (*this);
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130 }
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131
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132 void
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133 tree_checker::visit_simple_assignment (tree_simple_assignment& expr)
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134 {
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135 tree_expression *lhs = expr.left_hand_side ();
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136
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137 if (lhs)
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138 {
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139 if (! lhs->lvalue_ok ())
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140 errmsg ("invalid lvalue in assignment", expr.line ());
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141 }
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142
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143 tree_expression *rhs = expr.right_hand_side ();
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144
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145 if (rhs)
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146 rhs->accept (*this);
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147 }
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148
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149 void
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150 tree_checker::visit_try_catch_command (tree_try_catch_command& cmd)
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151 {
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152 tree_statement_list *try_code = cmd.body ();
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153
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154 tree_identifier *expr_id = cmd.identifier ();
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155
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156 if (expr_id)
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157 {
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158 if (! expr_id->lvalue_ok ())
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159 errmsg ("invalid lvalue used for identifier in try-catch command",
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160 cmd.line ());
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161 }
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Stefan Mahr <dac922@gmx.de>
parents: 16203
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162
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163 if (try_code)
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164 try_code->accept (*this);
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165
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166 tree_statement_list *catch_code = cmd.cleanup ();
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167
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168 if (catch_code)
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169 catch_code->accept (*this);
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170 }
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171
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172 void
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173 tree_checker::errmsg (const std::string& msg, int line)
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174 {
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175 if (m_file_name.empty ())
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176 error ("%s", msg.c_str ());
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177 else
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178 error ("%s: %d: %s", m_file_name.c_str (), line, msg.c_str ());
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179 }
31605
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Rik <rik@octave.org>
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180
e88a07dec498 maint: Use macros to begin/end C++ namespaces.
Rik <rik@octave.org>
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181 OCTAVE_END_NAMESPACE(octave)