Mercurial > hg > octave-nkf

annotate libinterp/parse-tree/pt-colon.cc @ 20750:3339c9bdfe6a

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Activate FSAL property in dorpri timestepper * scripts/ode/private/runge_kutta_45_dorpri.m: don't compute first stage if values from previous iteration are passed. * scripts/ode/private/integrate_adaptive.m: do not update cmputed stages if timestep is rejected.
author Carlo de Falco <carlo.defalco@polimi.it>
date Sat, 03 Oct 2015 07:32:50 +0200
parents 7ac907da9fba
children f90c8372b7ba
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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) 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
cd5ad3fd8049 [project @ 1997-05-16 01:12:13 by jwe]
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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 "pager.h"
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30 #include "ov.h"
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31 #include "pt-bp.h"
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32 #include "pt-colon.h"
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33 #include "pt-walk.h"
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34
cd5ad3fd8049 [project @ 1997-05-16 01:12:13 by jwe]
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35 // Colon expressions.
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36
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37 tree_colon_expression *
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38 tree_colon_expression::append (tree_expression *t)
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39 {
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40 tree_colon_expression *retval = 0;
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41
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42 if (op_base)
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43 {
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44 if (op_limit)
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45 {
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46 if (op_increment)
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47 error ("invalid colon expression");
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48 else
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49 {
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50 // Stupid syntax:
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51 //
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52 // base : limit
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53 // base : increment : limit
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54
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55 op_increment = op_limit;
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56 op_limit = t;
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57 }
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58 }
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59 else
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60 op_limit = t;
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61
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62 retval = this;
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63 }
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64 else
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65 error ("invalid colon expression");
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66
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67 return retval;
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68 }
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69
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70 octave_value_list
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71 tree_colon_expression::rvalue (int nargout)
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72 {
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73 octave_value_list retval;
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74
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75 if (nargout > 1)
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76 error ("invalid number of output arguments for colon expression");
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77 else
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78 retval = rvalue1 (nargout);
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79
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80 return retval;
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81 }
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82
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83 octave_value
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84 tree_colon_expression::rvalue1 (int)
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85 {
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86 octave_value retval;
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87
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88 if (error_state || ! op_base || ! op_limit)
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89 return retval;
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90
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91 octave_value ov_base = op_base->rvalue1 ();
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92
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93 if (error_state || ov_base.is_undefined ())
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94 eval_error ("invalid base value in colon expression");
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95 else
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96 {
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97 octave_value ov_limit = op_limit->rvalue1 ();
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98
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99 if (error_state || ov_limit.is_undefined ())
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100 eval_error ("invalid limit value in colon expression");
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101 else if (ov_base.is_object () || ov_limit.is_object ())
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102 {
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103 octave_value_list tmp1;
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104
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105 if (op_increment)
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106 {
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107 octave_value ov_increment = op_increment->rvalue1 ();
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108
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109 if (error_state || ov_increment.is_undefined ())
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110 eval_error ("invalid increment value in colon expression");
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111 else
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112 {
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113 tmp1(2) = ov_limit;
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114 tmp1(1) = ov_increment;
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115 tmp1(0) = ov_base;
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116 }
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117 }
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118 else
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119 {
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120 tmp1(1) = ov_limit;
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121 tmp1(0) = ov_base;
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122 }
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123
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124 if (!error_state)
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125 {
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126 octave_value fcn = symbol_table::find_function ("colon", tmp1);
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127
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128 if (fcn.is_defined ())
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129 {
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130 octave_value_list tmp2 = fcn.do_multi_index_op (1, tmp1);
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131
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132 if (! error_state)
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133 retval = tmp2 (0);
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134 }
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135 else
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136 error ("can not find overloaded colon function");
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137 }
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138 }
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139 else
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140 {
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141 octave_value ov_increment = 1.0;
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142
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143 if (op_increment)
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144 {
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145 ov_increment = op_increment->rvalue1 ();
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146
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147 if (error_state || ov_increment.is_undefined ())
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148 eval_error ("invalid increment value in colon expression");
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149 }
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150
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151 if (! error_state)
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152 retval = do_colon_op (ov_base, ov_increment, ov_limit,
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153 is_for_cmd_expr ());
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154 }
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155 }
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156
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157 return retval;
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158 }
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159
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160 void
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161 tree_colon_expression::eval_error (const std::string& s) const
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162 {
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163 error ("%s", s.c_str ());
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164 }
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165
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166 int
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167 tree_colon_expression::line (void) const
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168 {
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169 return (op_base ? op_base->line ()
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170 : (op_increment ? op_increment->line ()
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171 : (op_limit ? op_limit->line ()
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172 : -1)));
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173 }
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174
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175 int
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176 tree_colon_expression::column (void) const
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177 {
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178 return (op_base ? op_base->column ()
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179 : (op_increment ? op_increment->column ()
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180 : (op_limit ? op_limit->column ()
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181 : -1)));
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182 }
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183
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184 tree_expression *
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185 tree_colon_expression::dup (symbol_table::scope_id scope,
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186 symbol_table::context_id context) const
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187 {
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188 tree_colon_expression *new_ce = new
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189 tree_colon_expression (op_base ? op_base->dup (scope, context) : 0,
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190 op_limit ? op_limit->dup (scope, context) : 0,
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191 op_increment ? op_increment->dup (scope, context)
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192 : 0,
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193 line (), column ());
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194
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195 new_ce->copy_base (*new_ce);
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196
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197 return new_ce;
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198 }
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199
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200 void
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201 tree_colon_expression::accept (tree_walker& tw)
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202 {
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203 tw.visit_colon_expression (*this);
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204 }