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annotate libinterp/parse-tree/pt-pr-code.h @ 30564:796f54d4ddbf stable

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update Octave Project Developers copyright for the new year In files that have the "Octave Project Developers" copyright notice, update for 2021. In all .txi and .texi files except gpl.txi and gpl.texi in the doc/liboctave and doc/interpreter directories, change the copyright to "Octave Project Developers", the same as used for other source files. Update copyright notices for 2022 (not done since 2019). For gpl.txi and gpl.texi, change the copyright notice to be "Free Software Foundation, Inc." and leave the date at 2007 only because this file only contains the text of the GPL, not anything created by the Octave Project Developers. Add Paul Thomas to contributors.in.
author John W. Eaton <jwe@octave.org>
date Tue, 28 Dec 2021 18:22:40 -0500
parents c19f8cbe0fd5
children e88a07dec498
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1 ////////////////////////////////////////////////////////////////////////
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2 //
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3 // Copyright (C) 1996-2022 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 (octave_pt_pr_code_h)
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27 #define octave_pt_pr_code_h 1
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28
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29 #include "octave-config.h"
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30
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31 #include <stack>
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32 #include <string>
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33
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34 #include "pt-walk.h"
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35
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36 namespace octave
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37 {
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38 class comment_elt;
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39 class comment_list;
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40 class tree_decl_command;
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41 class tree_expression;
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42
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43 // How to print the code that the parse trees represent.
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44
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45 class tree_print_code : public tree_walker
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46 {
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47 public:
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48
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49 tree_print_code (std::ostream& os_arg,
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50 const std::string& pfx = "",
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51 bool pr_orig_txt = true)
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52 : m_os (os_arg), m_prefix (pfx), m_nesting (),
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53 m_print_original_text (pr_orig_txt),
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54 m_curr_print_indent_level (0), m_beginning_of_line (true),
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55 m_suppress_newlines (0)
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56 {
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57 // For "none".
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58 m_nesting.push ('n');
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59 }
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60
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61 // No copying!
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62
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63 tree_print_code (const tree_print_code&) = delete;
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64
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65 tree_print_code& operator = (const tree_print_code&) = delete;
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66
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67 ~tree_print_code (void) = default;
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68
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69 void visit_anon_fcn_handle (tree_anon_fcn_handle&);
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70
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71 void visit_argument_list (tree_argument_list&);
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72
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73 void visit_arguments_block (tree_arguments_block&);
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74
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75 void visit_args_block_attribute_list (tree_args_block_attribute_list&);
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76
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77 void visit_args_block_validation_list (tree_args_block_validation_list&);
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78
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79 void visit_arg_validation (tree_arg_validation&);
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80
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81 void visit_arg_size_spec (tree_arg_size_spec&);
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82
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83 void visit_arg_validation_fcns (tree_arg_validation_fcns&);
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84
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85 void visit_binary_expression (tree_binary_expression&);
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86
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87 void visit_break_command (tree_break_command&);
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88
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89 void visit_colon_expression (tree_colon_expression&);
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90
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91 void visit_continue_command (tree_continue_command&);
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92
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93 void visit_decl_command (tree_decl_command&);
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94
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95 void visit_decl_init_list (tree_decl_init_list&);
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96
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97 void visit_decl_elt (tree_decl_elt&);
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98
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99 void visit_simple_for_command (tree_simple_for_command&);
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100
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101 void visit_complex_for_command (tree_complex_for_command&);
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102
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103 void visit_spmd_command (tree_spmd_command&);
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104
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105 void visit_octave_user_script (octave_user_script&);
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106
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107 void visit_octave_user_function (octave_user_function&);
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108
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109 void visit_octave_user_function_header (octave_user_function&);
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110
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111 void visit_octave_user_function_trailer (octave_user_function&);
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112
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113 void visit_function_def (tree_function_def&);
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114
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115 void visit_identifier (tree_identifier&);
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116
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117 void visit_if_clause (tree_if_clause&);
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118
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119 void visit_if_command (tree_if_command&);
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120
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121 void visit_if_command_list (tree_if_command_list&);
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122
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123 void visit_index_expression (tree_index_expression&);
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124
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125 void visit_matrix (tree_matrix&);
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126
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127 void visit_cell (tree_cell&);
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128
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129 void visit_multi_assignment (tree_multi_assignment&);
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130
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131 void visit_no_op_command (tree_no_op_command&);
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132
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133 void visit_constant (tree_constant&);
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134
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135 void visit_fcn_handle (tree_fcn_handle&);
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136
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137 void visit_parameter_list (tree_parameter_list&);
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138
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139 void visit_postfix_expression (tree_postfix_expression&);
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140
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141 void visit_prefix_expression (tree_prefix_expression&);
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142
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143 void visit_return_command (tree_return_command&);
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144
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145 void visit_simple_assignment (tree_simple_assignment&);
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146
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147 void visit_statement (tree_statement&);
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148
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149 void visit_statement_list (tree_statement_list&);
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150
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151 void visit_switch_case (tree_switch_case&);
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152
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153 void visit_switch_command (tree_switch_command&);
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154
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155 void visit_try_catch_command (tree_try_catch_command&);
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156
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157 void visit_unwind_protect_command (tree_unwind_protect_command&);
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158
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159 void visit_while_command (tree_while_command&);
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160
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161 void visit_do_until_command (tree_do_until_command&);
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162
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163 void visit_superclass_ref (tree_superclass_ref&);
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164
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165 void visit_metaclass_query (tree_metaclass_query&);
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166
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167 void print_fcn_handle_body (tree_expression *);
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168
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169 private:
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170
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171 std::ostream& m_os;
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172
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173 std::string m_prefix;
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174
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175 std::stack<char> m_nesting;
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176
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177 bool m_print_original_text;
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178
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179 // Current indentation.
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180 int m_curr_print_indent_level;
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181
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182 // TRUE means we are at the beginning of a line.
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183 bool m_beginning_of_line;
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184
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185 // Nonzero means we are not printing newlines and indenting.
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186 int m_suppress_newlines;
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187
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188 void reset_indent_level (void) { m_curr_print_indent_level = 0; }
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189
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190 void increment_indent_level (void) { m_curr_print_indent_level += 2; }
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191
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192 void decrement_indent_level (void) { m_curr_print_indent_level -= 2; }
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193
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194 void newline (const char *alt_txt = ", ");
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195
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196 void indent (void);
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197
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198 void reset (void);
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199
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200 void print_parens (const tree_expression& expr, const char *txt);
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201
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202 void print_comment_list (comment_list *comment_list);
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203
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204 void print_comment_elt (const comment_elt& comment_elt);
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205
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206 void print_indented_comment (comment_list *comment_list);
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207
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208 // Must create with an output stream!
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209
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210 tree_print_code (void);
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211 };
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212 }
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213
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214 #endif