Mercurial > octave-nkf

annotate libinterp/parse-tree/pt-select.cc @ 20624:7c0e10f035bd

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Extend parser to accept binary constants that begin with '0b' or '0B'. * NEWS: Announce change: * lex.ll: Define NUMBIN to be 0[bB] followed by 0,1, or '_'. Define NUMBER to be NUMREAL|NUMHEX|NUMBIN. *lex.ll (looks_like_bin): New function to detect 0[bB] prefix. *lex.ll (handle_numbe): Call looks_like_bin() and if found then convert binary string to double. * parser.tst: Add tests for new behavior.
author Rik <rik@octave.org>
date Fri, 09 Oct 2015 18:52:58 -0700
parents f90c8372b7ba
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /*
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2
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3 Copyright (C) 1996-2015 John W. Eaton
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4
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5 This file is part of Octave.
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6
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7 Octave is free software; you can redistribute it and/or modify it
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8 under the terms of the GNU General Public License as published by the
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9 Free Software Foundation; either version 3 of the License, or (at your
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10 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 WITHOUT
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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15 for more details.
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16
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17 You should have received a copy of the GNU General Public License
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18 along with Octave; see the file COPYING. If not, see
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19 <http://www.gnu.org/licenses/>.
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20
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21 */
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22
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23 #ifdef 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 "error.h"
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28 #include "oct-obj.h"
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29 #include "ov.h"
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30 #include "pt-cmd.h"
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31 #include "pt-exp.h"
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32 #include "pt-select.h"
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33 #include "pt-stmt.h"
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34 #include "pt-walk.h"
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35 #include "Cell.h"
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36 #include "ov-typeinfo.h"
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37
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38 // If clauses.
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39
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40 tree_if_clause::~tree_if_clause (void)
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41 {
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42 delete expr;
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43 delete list;
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44 delete lead_comm;
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45 }
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46
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47 tree_if_clause *
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48 tree_if_clause::dup (symbol_table::scope_id scope,
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49 symbol_table::context_id context) const
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50 {
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51 return new tree_if_clause (expr ? expr->dup (scope, context) : 0,
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52 list ? list->dup (scope, context) : 0,
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53 lead_comm ? lead_comm->dup () : 0);
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54 }
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55
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56 void
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57 tree_if_clause::accept (tree_walker& tw)
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58 {
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59 tw.visit_if_clause (*this);
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60 }
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61
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62 // List of if commands.
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63
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64 tree_if_command_list *
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65 tree_if_command_list::dup (symbol_table::scope_id scope,
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66 symbol_table::context_id context) const
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67 {
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68 tree_if_command_list *new_icl = new tree_if_command_list ();
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69
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70 for (const_iterator p = begin (); p != end (); p++)
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71 {
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72 const tree_if_clause *elt = *p;
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73
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74 new_icl->append (elt ? elt->dup (scope, context) : 0);
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75 }
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76
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77 return new_icl;
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78 }
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79
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80 void
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81 tree_if_command_list::accept (tree_walker& tw)
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82 {
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83 tw.visit_if_command_list (*this);
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84 }
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85
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86 // If.
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87
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88 tree_if_command::~tree_if_command (void)
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89 {
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90 delete list;
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91 delete lead_comm;
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92 delete trail_comm;
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93 }
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94
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95 tree_command *
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96 tree_if_command::dup (symbol_table::scope_id scope,
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97 symbol_table::context_id context) const
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98 {
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99 return new tree_if_command (list ? list->dup (scope, context) : 0,
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100 lead_comm ? lead_comm->dup () : 0,
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101 trail_comm ? trail_comm->dup () : 0,
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102 line (), column ());
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103 }
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104
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105 void
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106 tree_if_command::accept (tree_walker& tw)
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107 {
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108 tw.visit_if_command (*this);
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109 }
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110
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111 // Switch cases.
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112
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113 tree_switch_case::~tree_switch_case (void)
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114 {
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115 delete label;
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116 delete list;
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117 delete lead_comm;
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118 }
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119
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120
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121 bool
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122 tree_switch_case::label_matches (const octave_value& val)
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123 {
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124 octave_value label_value = label->rvalue1 ();
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125
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126 if (label_value.is_defined ())
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127 {
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128 if (label_value.is_cell ())
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129 {
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130 Cell cell (label_value.cell_value ());
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131
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132 for (octave_idx_type i = 0; i < cell.rows (); i++)
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133 {
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134 for (octave_idx_type j = 0; j < cell.columns (); j++)
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135 {
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136 bool match = val.is_equal (cell(i,j));
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137
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138 if (match)
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139 return true;
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140 }
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141 }
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142 }
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143 else
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144 return val.is_equal (label_value);
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145 }
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146
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147 return false;
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148 }
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149
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150 tree_switch_case *
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151 tree_switch_case::dup (symbol_table::scope_id scope,
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152 symbol_table::context_id context) const
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153 {
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154 return new tree_switch_case (label ? label->dup (scope, context) : 0,
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155 list ? list->dup (scope, context) : 0,
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156 lead_comm ? lead_comm->dup () : 0);
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157 }
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158
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159 void
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160 tree_switch_case::accept (tree_walker& tw)
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161 {
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162 tw.visit_switch_case (*this);
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163 }
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164
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165 // List of switch cases.
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166
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167 tree_switch_case_list *
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168 tree_switch_case_list::dup (symbol_table::scope_id scope,
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169 symbol_table::context_id context) const
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170 {
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171 tree_switch_case_list *new_scl = new tree_switch_case_list ();
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172
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173 for (const_iterator p = begin (); p != end (); p++)
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174 {
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175 const tree_switch_case *elt = *p;
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176
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177 new_scl->append (elt ? elt->dup (scope, context) : 0);
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178 }
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179
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180 return new_scl;
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181 }
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182
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183 void
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184 tree_switch_case_list::accept (tree_walker& tw)
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185 {
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186 tw.visit_switch_case_list (*this);
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187 }
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188
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189 // Switch.
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190
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191 tree_switch_command::~tree_switch_command (void)
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192 {
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193 delete expr;
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194 delete list;
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195 delete lead_comm;
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196 delete trail_comm;
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197 }
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198
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199 tree_command *
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200 tree_switch_command::dup (symbol_table::scope_id scope,
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201 symbol_table::context_id context) const
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202 {
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203 return new tree_switch_command (expr ? expr->dup (scope, context) : 0,
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204 list ? list->dup (scope, context) : 0,
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205 lead_comm ? lead_comm->dup () : 0,
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206 trail_comm ? trail_comm->dup () : 0,
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207 line (), column ());
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208 }
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209
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210 void
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211 tree_switch_command::accept (tree_walker& tw)
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212 {
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213 tw.visit_switch_command (*this);
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214 }