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annotate libinterp/parse-tree/pt-stmt.h @ 27956:2310164737b3 stable

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fix many spelling errors (bug #57613)
author John W. Eaton <jwe@octave.org>
date Fri, 17 Jan 2020 13:15:27 -0600
parents 00f796120a6d
children c20b7290c778
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) 1996-2019 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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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 <https://www.gnu.org/licenses/>.
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20
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21 */
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22
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23 #if ! defined (octave_pt_stmt_h)
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24 #define octave_pt_stmt_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_value_list;
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29
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30 #include <deque>
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31
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32 #include "base-list.h"
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33 #include "bp-table.h"
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34 #include "pt.h"
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35 #include "pt-walk.h"
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36
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37 namespace octave
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38 {
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39 class comment_list;
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40 class tree_command;
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41 class tree_evaluator;
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42 class tree_expression;
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43
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44 // A statement is either a command to execute or an expression to
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45 // evaluate.
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46
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47 class tree_statement : public tree
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48 {
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49 public:
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50
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51 tree_statement (void)
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52 : m_command (nullptr), m_expression (nullptr),
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53 m_comment_list (nullptr) { }
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54
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55 tree_statement (tree_command *c, comment_list *cl)
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56 : m_command (c), m_expression (nullptr), m_comment_list (cl) { }
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57
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58 tree_statement (tree_expression *e, comment_list *cl)
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59 : m_command (nullptr), m_expression (e), m_comment_list (cl) { }
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60
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61 // No copying!
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62
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63 tree_statement (const tree_statement&) = delete;
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64
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65 tree_statement& operator = (const tree_statement&) = delete;
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66
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67 ~tree_statement (void);
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68
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69 void set_print_flag (bool print_flag);
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70
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71 bool print_result (void);
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72
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73 bool is_command (void) const { return m_command != nullptr; }
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74
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75 bool is_expression (void) const { return m_expression != nullptr; }
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76
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77 void set_breakpoint (const std::string& condition);
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78
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79 void delete_breakpoint (void);
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80
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81 bool is_breakpoint (void) const;
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82
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83 bool is_active_breakpoint (tree_evaluator& tw) const;
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84
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85 std::string bp_cond () const;
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86
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87 int line (void) const;
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88 int column (void) const;
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89
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90 void set_location (int l, int c);
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91
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92 void echo_code (const std::string& prefix);
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93
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94 tree_command * command (void) { return m_command; }
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95
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96 tree_expression * expression (void) { return m_expression; }
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98 comment_list * comment_text (void) { return m_comment_list; }
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99
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100 bool is_null_statement (void) const
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101 {
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102 return ! (m_command || m_expression || m_comment_list);
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103 }
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104
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105 bool is_end_of_fcn_or_script (void) const;
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106
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107 bool is_end_of_file (void) const;
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108
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109 // Allow modification of this statement. Note that there is no
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110 // checking. If you use these, are you sure you know what you are
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111 // doing?
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112
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113 void set_command (tree_command *c) { m_command = c; }
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114
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115 void set_expression (tree_expression *e) { m_expression = e; }
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116
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117 void accept (tree_walker& tw)
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118 {
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119 tw.visit_statement (*this);
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120 }
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121
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122 private:
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123
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124 // Only one of cmd or expr can be valid at once.
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125
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126 // Command to execute.
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127 tree_command *m_command;
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128
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129 // Expression to evaluate.
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130 tree_expression *m_expression;
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131
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132 // Comment associated with this statement.
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133 comment_list *m_comment_list;
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134 };
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135
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136 // A list of statements to evaluate.
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137
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138 class tree_statement_list : public base_list<tree_statement *>
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139 {
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140 public:
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141
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142 tree_statement_list (void)
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143 : m_function_body (false), m_anon_function_body (false),
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144 m_script_body (false) { }
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145
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146 tree_statement_list (tree_statement *s)
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147 : m_function_body (false), m_anon_function_body (false),
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148 m_script_body (false) { append (s); }
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149
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150 // No copying!
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151
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152 tree_statement_list (const tree_statement_list&) = delete;
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153
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154 tree_statement_list& operator = (const tree_statement_list&) = delete;
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155
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156 ~tree_statement_list (void)
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157 {
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158 while (! empty ())
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159 {
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160 auto p = begin ();
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161 delete *p;
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162 erase (p);
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163 }
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164 }
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165
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166 void mark_as_function_body (void) { m_function_body = true; }
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167
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168 void mark_as_anon_function_body (void) { m_anon_function_body = true; }
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169
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170 void mark_as_script_body (void) { m_script_body = true; }
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171
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172 bool is_function_body (void) const { return m_function_body; }
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173
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174 bool is_anon_function_body (void) const { return m_anon_function_body; }
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175
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176 bool is_script_body (void) const { return m_script_body; }
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177
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178 int set_breakpoint (int line, const std::string& condition);
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179
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180 void delete_breakpoint (int line);
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181
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182 octave_value_list list_breakpoints (void);
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183
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184 std::list<bp_type> breakpoints_and_conds (void);
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185
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186 bp_table::intmap add_breakpoint (const std::string& file,
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187 const bp_table::intmap& line,
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188 const std::string& condition);
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189
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190 bp_table::intmap remove_all_breakpoints (const std::string& file);
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191
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192 void accept (tree_walker& tw)
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193 {
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194 tw.visit_statement_list (*this);
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195 }
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196
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197 private:
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198
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199 // Does this list of statements make up the body of a function?
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200 bool m_function_body;
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201
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202 // Does this list of statements make up the body of a function?
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203 bool m_anon_function_body;
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204
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205 // Does this list of statements make up the body of a script?
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206 bool m_script_body;
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207 };
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208 }
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209
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210 #if defined (OCTAVE_USE_DEPRECATED_FUNCTIONS)
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211
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212 OCTAVE_DEPRECATED (4.4, "use 'octave::tree_statement' instead")
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213 typedef octave::tree_statement tree_statement;
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214
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215 OCTAVE_DEPRECATED (4.4, "use 'octave::tree_statement_list' instead")
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216 typedef octave::tree_statement_list tree_statement_list;
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217
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218 #endif
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219
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220 #endif