annotate libinterp/parse-tree/pt-decl.h @ 24846:7620f1f5290d

use m_ prefix for member variables in parse tree classes * pt-arg-list.cc, pt-arg-list.h, pt-assign.cc, pt-assign.h, pt-binop.cc, pt-binop.h, pt-bp.cc, pt-bp.h, pt-cbinop.cc, pt-cbinop.h, pt-check.cc, pt-check.h, pt-classdef.cc, pt-classdef.h, pt-cmd.h, pt-colon.cc, pt-colon.h, pt-const.cc, pt-const.h, pt-decl.cc, pt-decl.h, pt-except.cc, pt-except.h, pt-fcn-handle.cc, pt-fcn-handle.h, pt-funcall.cc, pt-funcall.h, pt-id.cc, pt-id.h, pt-idx.cc, pt-idx.h, pt-jit.cc, pt-jit.h, pt-loop.cc, pt-loop.h, pt-misc.h, pt-pr-code.cc, pt-pr-code.h, pt-select.cc, pt-select.h, pt-stmt.cc, pt-stmt.h, pt-tm-const.cc, pt-tm-const.h, pt.cc, pt.h: Use m_ prefix for member variables in parse tree classes. Style fixes.
author John W. Eaton <jwe@octave.org>
date Wed, 07 Mar 2018 14:56:03 -0500
parents 194eb4bd202b
children 6652d3823428
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1 /*
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2
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3 Copyright (C) 1996-2017 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_decl_h)
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24 #define octave_pt_decl_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 #include <list>
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29 #include <string>
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30
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31 #include "base-list.h"
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32 #include "oct-lvalue.h"
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33 #include "pt-cmd.h"
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34 #include "pt-id.h"
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35 #include "pt-walk.h"
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36 #include "symrec.h"
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37
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38 namespace octave
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39 {
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40 class symbol_scope;
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41 class tree_evaluator;
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42 class tree_expression;
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43 class tree_identifier;
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44
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45 // List of expressions that make up a declaration statement.
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46
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47 class tree_decl_elt
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48 {
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49 public:
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50
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51 enum decl_type
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52 {
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53 unknown,
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54 global,
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55 persistent
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56 };
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57
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58 tree_decl_elt (tree_identifier *i = nullptr, tree_expression *e = nullptr)
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59 : type (unknown), m_id (i), m_expr (e) { }
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61 // No copying!
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62
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63 tree_decl_elt (const tree_decl_elt&) = delete;
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64
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65 tree_decl_elt& operator = (const tree_decl_elt&) = delete;
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67 ~tree_decl_elt (void);
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68
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69 bool is_defined (symbol_record::context_id context)
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70 {
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71 return m_id ? m_id->is_defined (context) : false;
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72 }
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73
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74 bool is_variable (symbol_record::context_id context)
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75 {
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76 return m_id ? m_id->is_variable (context) : false;
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77 }
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78
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79 void mark_as_formal_parameter (void)
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80 {
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81 if (m_id)
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82 m_id->mark_as_formal_parameter ();
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83 }
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84
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85 bool lvalue_ok (void) { return m_id ? m_id->lvalue_ok () : false; }
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86
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87 octave_lvalue lvalue (tree_evaluator *tw)
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88 {
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89 return m_id ? m_id->lvalue (tw) : octave_lvalue ();
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90 }
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91
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92 void mark_global (void) { type = global; }
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93 bool is_global (void) const { return type == global; }
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94
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95 void mark_persistent (void) { type = persistent; }
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96 bool is_persistent (void) const { return type == persistent; }
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97
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98 tree_identifier * ident (void) { return m_id; }
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99
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100 std::string name (void) const { return m_id ? m_id->name () : ""; }
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101
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102 tree_expression * expression (void) { return m_expr; }
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103
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104 tree_decl_elt * dup (symbol_scope& scope) const;
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105
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106 void accept (tree_walker& tw)
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107 {
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108 tw.visit_decl_elt (*this);
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109 }
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110
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111 private:
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112
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113 decl_type type;
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114
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115 // An identifier to tag with the declared property.
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116 tree_identifier *m_id;
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117
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118 // An initializer expression (may be zero);
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119 tree_expression *m_expr;
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120 };
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121
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122 class tree_decl_init_list : public base_list<tree_decl_elt *>
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123 {
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124 public:
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125
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126 tree_decl_init_list (void) { }
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127
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128 tree_decl_init_list (tree_decl_elt *t) { append (t); }
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129
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130 // No copying!
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131
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132 tree_decl_init_list (const tree_decl_init_list&) = delete;
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133
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134 tree_decl_init_list& operator = (const tree_decl_init_list&) = delete;
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135
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136 ~tree_decl_init_list (void)
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137 {
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138 while (! empty ())
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139 {
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140 iterator p = begin ();
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141 delete *p;
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142 erase (p);
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143 }
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144 }
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145
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146 void mark_global (void)
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147 {
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148 for (tree_decl_elt *elt : *this)
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149 elt->mark_global ();
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150 }
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151
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152 void mark_persistent (void)
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153 {
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154 for (tree_decl_elt *elt : *this)
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155 elt->mark_persistent ();
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156 }
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157
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158 std::list<std::string> variable_names (void) const
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159 {
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160 std::list<std::string> retval;
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161
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162 for (const tree_decl_elt *elt : *this)
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163 {
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164 std::string nm = elt->name ();
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165
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166 if (! nm.empty ())
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167 retval.push_back (nm);
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168 }
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169
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170 return retval;
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171 }
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172
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173 void accept (tree_walker& tw)
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174 {
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175 tw.visit_decl_init_list (*this);
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176 }
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177 };
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178
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179 // Base class for declaration commands -- global, static, etc.
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180
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181 class tree_decl_command : public tree_command
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182 {
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183 public:
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184
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185 tree_decl_command (const std::string& n, int l = -1, int c = -1)
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186 : tree_command (l, c), m_cmd_name (n), m_init_list (nullptr) { }
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187
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188 tree_decl_command (const std::string& n, tree_decl_init_list *t,
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189 int l = -1, int c = -1);
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190
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191 // No copying!
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192
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193 tree_decl_command (const tree_decl_command&) = delete;
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194
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195 tree_decl_command& operator = (const tree_decl_command&) = delete;
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196
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197 ~tree_decl_command (void);
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198
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199 void mark_global (void)
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200 {
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201 if (m_init_list)
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202 m_init_list->mark_global ();
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203 }
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204
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205 void mark_persistent (void)
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206 {
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207 if (m_init_list)
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208 m_init_list->mark_persistent ();
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209 }
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210
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211 tree_decl_init_list * initializer_list (void) { return m_init_list; }
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212
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213 std::string name (void) const { return m_cmd_name; }
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214
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215 void accept (tree_walker& tw)
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216 {
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217 tw.visit_decl_command (*this);
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218 }
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219
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220 private:
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221
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222 // The name of this command -- global, static, etc.
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223 std::string m_cmd_name;
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224
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225 // The list of variables or initializers in this declaration command.
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226 tree_decl_init_list *m_init_list;
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227 };
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228 }
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229
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230 #if defined (OCTAVE_USE_DEPRECATED_FUNCTIONS)
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231
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232 OCTAVE_DEPRECATED (4.4, "use 'octave::tree_decl_elt' instead")
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233 typedef octave::tree_decl_elt tree_decl_elt;
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234
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235 // tree_decl_init_list is derived from a template.
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236
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237 OCTAVE_DEPRECATED (4.4, "use 'octave::tree_decl_command' instead")
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238 typedef octave::tree_decl_command tree_decl_command;
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239
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240 #endif
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241
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242 #endif