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annotate libinterp/parse-tree/pt-walk.h @ 26686:581d01526b34

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eliminate unnecessary tree_funcall class The tree_funcall class was only used to handled generated calls to internal functions used by classdef superclass reference and metaclass query operations. This change replaces those function calls by something more direct. * pt-classdef.h, pt-classdef.cc (tree_superclass_ref, tree_metaclass_query): New classes. * pt-walk.h (tree_walker::visit_tree_funcall): Delete. Update all derived classes. (tree_walker::visit_superclass_ref, tree_walker::visit_metaclass_query): New virtual functions. * pt-pr-code.h, pt-pr-code.cc (tree_print_code::visit (tree_print_code::visit_superclass_ref, tree_print_code::visit_metaclass_query): Correctly print these parse tree elements. * oct-parse.yy (superclass_identifier, meta_identifier): Use new tree_superclass_ref tree_metaclass_query classes instead of tree_funcall to represent these language elements. * lex.ll (base_lexer::handle_superclass_identifier): Attempt to make intent of code clearer. Save line and column info in token. * pt-eval.h, pt-eval.cc (tree_evaluator::visit_funcall): Delete. (tree_evaluator::visit_superclass_ref, tree_evaluator::visit_metaclass_query): New functions. Handle superclass reference and metaclass query operations more directly. * ov-classdef.h, ov-classdef.cc (F__superclass_reference__, F__meta_class_query__): Delete. (class octave_classdef_superclass_ref): Work directly with method or object and class names as strings instead of octave_value objects. (octave_classdef::superclass_ref, octave_classdef::metaclass_query): New static functions. * token.h, token.cc: Attempt to use clearer names for superclass reference tokens. * pt-funcall.h, pt-funcall.cc: Delete. * libinterp/parse-tree/module.mk: Update. * pt-all.h: Update.
author John W. Eaton <jwe@octave.org>
date Thu, 07 Feb 2019 00:03:55 +0000
parents fff643eb3514
children 6388a240de87
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1 /*
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2
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3 Copyright (C) 1996-2019 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
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9 the Free Software Foundation, either version 3 of the License, or
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10 (at your 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
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13 WITHOUT ANY WARRANTY; without even the implied warranty of
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14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 GNU General Public License for more details.
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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 <https://www.gnu.org/licenses/>.
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21 */
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22
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23 #if ! defined (octave_pt_walk_h)
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24 #define octave_pt_walk_h 1
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25
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26 #include "octave-config.h"
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27
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28 class octave_user_script;
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29 class octave_user_function;
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30
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31 namespace octave
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32 {
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33 // No separate visitor needed
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34 // Base classes only, so no need to include them.
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35 //
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36 // class tree_array_list
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37 // class tree_unary_expression
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38 // class tree_black_hole
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39
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40 class tree_anon_fcn_handle;
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41 class tree_argument_list;
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42 class tree_binary_expression;
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43 class tree_boolean_expression;
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44 class tree_compound_binary_expression;
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45 class tree_break_command;
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46 class tree_colon_expression;
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47 class tree_continue_command;
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48 class tree_decl_command;
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49 class tree_decl_init_list;
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50 class tree_decl_elt;
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51 class tree_simple_for_command;
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52 class tree_complex_for_command;
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53 class tree_function_def;
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54 class tree_identifier;
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55 class tree_if_clause;
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56 class tree_if_command;
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57 class tree_if_command_list;
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58 class tree_switch_case;
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59 class tree_switch_case_list;
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60 class tree_switch_command;
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61 class tree_index_expression;
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62 class tree_matrix;
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63 class tree_cell;
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64 class tree_multi_assignment;
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65 class tree_no_op_command;
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66 class tree_constant;
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67 class tree_fcn_handle;
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68 class tree_parameter_list;
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69 class tree_postfix_expression;
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70 class tree_prefix_expression;
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71 class tree_return_command;
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72 class tree_return_list;
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73 class tree_simple_assignment;
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74 class tree_statement;
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75 class tree_statement_list;
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76 class tree_try_catch_command;
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77 class tree_unwind_protect_command;
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78 class tree_while_command;
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79 class tree_do_until_command;
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80
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81 class tree_superclass_ref;
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82 class tree_metaclass_query;
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83 class tree_classdef_attribute;
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84 class tree_classdef_attribute_list;
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85 class tree_classdef_superclass;
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86 class tree_classdef_superclass_list;
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87 class tree_classdef_property;
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88 class tree_classdef_property_list;
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89 class tree_classdef_properties_block;
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90 class tree_classdef_methods_list;
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91 class tree_classdef_methods_block;
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92 class tree_classdef_event;
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93 class tree_classdef_events_list;
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94 class tree_classdef_events_block;
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95 class tree_classdef_enum;
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96 class tree_classdef_enum_list;
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97 class tree_classdef_enum_block;
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98 class tree_classdef_body;
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99 class tree_classdef;
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101 class tree_walker
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102 {
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103 protected:
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105 tree_walker (void) { }
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107 virtual ~tree_walker (void) = default;
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108
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109 public:
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111 // No copying!
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113 tree_walker (const tree_walker&) = delete;
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115 tree_walker& operator = (const tree_walker&) = delete;
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117 virtual void
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118 visit_anon_fcn_handle (tree_anon_fcn_handle&) = 0;
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119
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120 virtual void
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121 visit_argument_list (tree_argument_list&) = 0;
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123 virtual void
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124 visit_binary_expression (tree_binary_expression&) = 0;
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126 virtual void
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127 visit_boolean_expression (tree_boolean_expression& expr);
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128
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129 virtual void
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130 visit_compound_binary_expression (tree_compound_binary_expression& expr);
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131
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132 virtual void
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133 visit_break_command (tree_break_command&) = 0;
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134
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135 virtual void
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136 visit_colon_expression (tree_colon_expression&) = 0;
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137
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138 virtual void
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139 visit_continue_command (tree_continue_command&) = 0;
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140
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141 virtual void
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142 visit_decl_command (tree_decl_command&) = 0;
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143
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144 virtual void
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145 visit_decl_elt (tree_decl_elt&) = 0;
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146
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147 virtual void
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148 visit_decl_init_list (tree_decl_init_list&) = 0;
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149
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150 virtual void
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151 visit_simple_for_command (tree_simple_for_command&) = 0;
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152
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153 virtual void
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154 visit_complex_for_command (tree_complex_for_command&) = 0;
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155
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156 virtual void
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157 visit_octave_user_script (octave_user_script&) = 0;
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158
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159 virtual void
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160 visit_octave_user_function (octave_user_function&) = 0;
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161
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162 virtual void
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163 visit_function_def (tree_function_def&) = 0;
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164
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165 virtual void
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166 visit_identifier (tree_identifier&) = 0;
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167
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168 virtual void
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169 visit_if_clause (tree_if_clause&) = 0;
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170
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171 virtual void
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172 visit_if_command (tree_if_command&) = 0;
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173
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174 virtual void
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175 visit_if_command_list (tree_if_command_list&) = 0;
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176
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177 virtual void
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178 visit_switch_case (tree_switch_case&) = 0;
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179
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180 virtual void
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181 visit_switch_case_list (tree_switch_case_list&) = 0;
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182
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183 virtual void
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184 visit_switch_command (tree_switch_command&) = 0;
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185
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186 virtual void
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187 visit_index_expression (tree_index_expression&) = 0;
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188
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189 virtual void
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190 visit_matrix (tree_matrix&) = 0;
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191
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192 virtual void
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193 visit_cell (tree_cell&) = 0;
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194
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195 virtual void
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196 visit_multi_assignment (tree_multi_assignment&) = 0;
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197
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198 virtual void
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199 visit_no_op_command (tree_no_op_command&) = 0;
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200
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201 virtual void
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202 visit_constant (tree_constant&) = 0;
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203
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204 virtual void
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205 visit_fcn_handle (tree_fcn_handle&) = 0;
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206
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207 virtual void
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208 visit_parameter_list (tree_parameter_list&) = 0;
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209
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210 virtual void
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211 visit_postfix_expression (tree_postfix_expression&) = 0;
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212
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213 virtual void
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214 visit_prefix_expression (tree_prefix_expression&) = 0;
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215
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216 virtual void
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217 visit_return_command (tree_return_command&) = 0;
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218
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219 virtual void
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220 visit_return_list (tree_return_list&) = 0;
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221
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222 virtual void
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223 visit_simple_assignment (tree_simple_assignment&) = 0;
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224
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225 virtual void
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226 visit_statement (tree_statement&) = 0;
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227
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228 virtual void
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229 visit_statement_list (tree_statement_list&) = 0;
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230
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231 virtual void
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232 visit_try_catch_command (tree_try_catch_command&) = 0;
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233
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234 virtual void
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235 visit_unwind_protect_command (tree_unwind_protect_command&) = 0;
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236
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237 virtual void
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238 visit_while_command (tree_while_command&) = 0;
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239
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240 virtual void
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241 visit_do_until_command (tree_do_until_command&) = 0;
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242
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243 virtual void
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244 visit_superclass_ref (tree_superclass_ref&) { } /* = 0; */
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245
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246 virtual void
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247 visit_metaclass_query (tree_metaclass_query&) { } /* = 0; */
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248
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249 virtual void
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250 visit_classdef_attribute (tree_classdef_attribute&) { } /* = 0; */
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251
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252 virtual void
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253 visit_classdef_attribute_list (tree_classdef_attribute_list&) { } // = 0;
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254
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255 virtual void
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256 visit_classdef_superclass (tree_classdef_superclass&) { } // = 0;
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257
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258 virtual void
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259 visit_classdef_superclass_list (tree_classdef_superclass_list&) { } // = 0;
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260
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261 virtual void
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262 visit_classdef_property (tree_classdef_property&) { } // = 0;
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263
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264 virtual void
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265 visit_classdef_property_list (tree_classdef_property_list&) { } // = 0;
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266
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267 virtual void
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268 visit_classdef_properties_block (tree_classdef_properties_block&) { } // = 0;
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269
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270 virtual void
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271 visit_classdef_methods_list (tree_classdef_methods_list&) { } // = 0;
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272
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273 virtual void
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274 visit_classdef_methods_block (tree_classdef_methods_block&) { } // = 0;
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275
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276 virtual void
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277 visit_classdef_event (tree_classdef_event&) { } // = 0;
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278
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279 virtual void
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280 visit_classdef_events_list (tree_classdef_events_list&) { } // = 0;
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281
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282 virtual void
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283 visit_classdef_events_block (tree_classdef_events_block&) { } // = 0;
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284
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285 virtual void
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286 visit_classdef_enum (tree_classdef_enum&) { } // = 0;
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287
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288 virtual void
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289 visit_classdef_enum_list (tree_classdef_enum_list&) { } // = 0;
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290
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291 virtual void
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292 visit_classdef_enum_block (tree_classdef_enum_block&) { } // = 0;
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293
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294 virtual void
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295 visit_classdef_body (tree_classdef_body&) { } // = 0;
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296
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297 virtual void
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298 visit_classdef (tree_classdef&) { } // = 0;
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299 };
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300 }
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301
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302 #endif