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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 313b8b897733
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_stmt_h)
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27 #define octave_pt_stmt_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 class octave_value_list;
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32
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33 #include <deque>
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34
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35 #include "base-list.h"
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36 #include "bp-table.h"
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37 #include "pt.h"
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38 #include "pt-walk.h"
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39
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40 class event_manager;
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41
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42 namespace octave
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43 {
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44 class comment_list;
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45 class tree_command;
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46 class tree_evaluator;
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47 class tree_expression;
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48
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49 // A statement is either a command to execute or an expression to
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50 // evaluate.
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51
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52 class tree_statement : public tree
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53 {
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54 public:
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55
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56 tree_statement (void)
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57 : m_command (nullptr), m_expression (nullptr),
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58 m_comment_list (nullptr) { }
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59
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60 tree_statement (tree_command *c, comment_list *cl)
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61 : m_command (c), m_expression (nullptr), m_comment_list (cl) { }
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62
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63 tree_statement (tree_expression *e, comment_list *cl)
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64 : m_command (nullptr), m_expression (e), m_comment_list (cl) { }
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65
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66 // No copying!
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67
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68 tree_statement (const tree_statement&) = delete;
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69
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70 tree_statement& operator = (const tree_statement&) = delete;
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71
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72 ~tree_statement (void);
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73
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74 void set_print_flag (bool print_flag);
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75
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76 bool print_result (void);
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77
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78 bool is_command (void) const { return m_command != nullptr; }
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79
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80 bool is_expression (void) const { return m_expression != nullptr; }
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81
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82 void set_breakpoint (const std::string& condition);
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83
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84 void delete_breakpoint (void);
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85
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86 bool is_breakpoint (void) const;
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87
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88 bool is_active_breakpoint (tree_evaluator& tw) const;
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89
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90 std::string bp_cond () const;
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91
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92 int line (void) const;
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93 int column (void) const;
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94
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95 void set_location (int l, int c);
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96
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97 void echo_code (const std::string& prefix);
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98
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99 tree_command * command (void) { return m_command; }
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100
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101 tree_expression * expression (void) { return m_expression; }
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102
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103 comment_list * comment_text (void) { return m_comment_list; }
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104
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105 bool is_null_statement (void) const
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106 {
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107 return ! (m_command || m_expression || m_comment_list);
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108 }
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109
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110 bool is_end_of_fcn_or_script (void) const;
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111
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112 bool is_end_of_file (void) const;
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113
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114 // Allow modification of this statement. Note that there is no
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115 // checking. If you use these, are you sure you know what you are
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116 // doing?
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117
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118 void set_command (tree_command *c) { m_command = c; }
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119
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120 void set_expression (tree_expression *e) { m_expression = e; }
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121
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122 void accept (tree_walker& tw)
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123 {
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124 tw.visit_statement (*this);
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125 }
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126
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127 private:
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128
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129 // Only one of cmd or expr can be valid at once.
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130
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131 // Command to execute.
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132 tree_command *m_command;
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133
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134 // Expression to evaluate.
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135 tree_expression *m_expression;
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136
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137 // Comment associated with this statement.
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138 comment_list *m_comment_list;
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139 };
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140
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141 // A list of statements to evaluate.
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142
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143 class tree_statement_list : public base_list<tree_statement *>
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144 {
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145 public:
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146
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147 tree_statement_list (void)
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148 : m_function_body (false), m_anon_function_body (false),
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149 m_script_body (false) { }
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150
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151 tree_statement_list (tree_statement *s)
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152 : m_function_body (false), m_anon_function_body (false),
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153 m_script_body (false) { append (s); }
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154
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155 // No copying!
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156
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157 tree_statement_list (const tree_statement_list&) = delete;
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158
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159 tree_statement_list& operator = (const tree_statement_list&) = delete;
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160
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161 ~tree_statement_list (void)
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162 {
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163 while (! empty ())
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164 {
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165 auto p = begin ();
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166 delete *p;
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167 erase (p);
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168 }
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169 }
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170
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171 void mark_as_function_body (void) { m_function_body = true; }
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172
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173 void mark_as_anon_function_body (void) { m_anon_function_body = true; }
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174
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175 void mark_as_script_body (void) { m_script_body = true; }
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176
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177 bool is_function_body (void) const { return m_function_body; }
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178
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179 bool is_anon_function_body (void) const { return m_anon_function_body; }
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180
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181 bool is_script_body (void) const { return m_script_body; }
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182
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183 int set_breakpoint (int line, const std::string& condition);
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184
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185 void delete_breakpoint (int line);
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186
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187 octave_value_list list_breakpoints (void);
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188
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189 std::list<bp_type> breakpoints_and_conds (void);
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190
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191 bp_table::bp_lines add_breakpoint (event_manager& evmgr,
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192 const std::string& file,
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193 const bp_table::bp_lines& lines,
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194 const std::string& condition);
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195
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196 bp_table::bp_lines remove_all_breakpoints (event_manager& evmgr,
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197 const std::string& file);
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198
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199 void accept (tree_walker& tw)
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200 {
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201 tw.visit_statement_list (*this);
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202 }
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203
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204 private:
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205
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206 // Does this list of statements make up the body of a function?
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207 bool m_function_body;
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208
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209 // Does this list of statements make up the body of a function?
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210 bool m_anon_function_body;
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211
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212 // Does this list of statements make up the body of a script?
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213 bool m_script_body;
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214 };
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215 }
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216
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217 #endif