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annotate libinterp/corefcn/symrec.h @ 33617:ec2635a02328 bytecode-interpreter tip

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maint: Merge default to bytecode-interpreter.
author Markus Mützel <markus.muetzel@gmx.de>
date Tue, 21 May 2024 18:29:03 +0200
parents 66a5438cc405
children
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1 ////////////////////////////////////////////////////////////////////////
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2 //
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3 // Copyright (C) 1993-2024 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_symrec_h)
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27 #define octave_symrec_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 <deque>
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32 #include <list>
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33 #include <memory>
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34 #include <string>
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35
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36 class octave_user_function;
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37
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38 #include "ov.h"
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39 #include "ovl.h"
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40
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41 OCTAVE_BEGIN_NAMESPACE(octave)
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42
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43 class OCTINTERP_API symbol_record
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44 {
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45 public:
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46
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47 typedef std::size_t context_id;
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48
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49 enum symrec_t : unsigned char
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50 {
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51 // generic variable
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52 LOCAL = 1,
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53 // formal parameter
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54 FORMAL = 2,
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55 // this symbol may NOT become a variable.
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56 // (symbol added to a static workspace)
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57 ADDED_STATIC = 4,
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58 // this symbol was recognized as a variable from syntax
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59 VARIABLE = 8
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60 };
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61
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62 private:
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63
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64 class symbol_record_rep
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65 {
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66 public:
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67
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68 symbol_record_rep () = delete;
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69
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70 symbol_record_rep (const std::string& nm, symrec_t sc)
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71 : m_frame_offset (0), m_data_offset (0), m_storage_class (sc),
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72 m_name (nm)
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73 { }
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74
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75 OCTAVE_DEFAULT_COPY_MOVE_DELETE (symbol_record_rep)
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76
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77 // FIXME: use special storage class instead?
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78 bool is_valid () const { return ! m_name.empty (); }
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79
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80 void set_frame_offset (std::size_t offset) { m_frame_offset = offset; }
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81
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82 std::size_t frame_offset () const { return m_frame_offset; }
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83
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84 void set_data_offset (std::size_t offset) { m_data_offset = offset; }
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85
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86 std::size_t data_offset () const { return m_data_offset; }
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87
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88 bool is_local () const
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89 {
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90 return m_storage_class & LOCAL;
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91 }
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92
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93 bool is_formal () const
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94 {
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95 return m_storage_class & FORMAL;
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96 }
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97
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98 bool is_added_static () const
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99 {
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100 return m_storage_class & ADDED_STATIC;
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101 }
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102
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103 bool is_variable () const
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104 {
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105 return m_storage_class & VARIABLE;
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106 }
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107
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108 void mark_local ()
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109 {
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110 m_storage_class = static_cast<symrec_t> (m_storage_class | LOCAL);
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111 }
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112
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113 void mark_formal ()
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114 {
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115 // Formal parameters are also variables.
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116 m_storage_class = static_cast<symrec_t> (m_storage_class
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117 | FORMAL | VARIABLE);
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118 }
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119
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120 void mark_added_static ()
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121 {
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122 m_storage_class = static_cast<symrec_t> (m_storage_class
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123 | ADDED_STATIC);
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124 }
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125
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126 void mark_variable ()
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127 {
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128 m_storage_class = static_cast<symrec_t> (m_storage_class | VARIABLE);
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129 }
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130
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131 OCTAVE_DEPRECATED (10, "symbol_record_rep::mark_as_variable is obsolete, use mark_variable")
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132 void mark_as_variable ()
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133 {
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134 m_storage_class = static_cast<symrec_t> (m_storage_class | VARIABLE);
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135 }
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136
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137
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138 void unmark_local ()
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139 {
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140 m_storage_class = static_cast<symrec_t> (m_storage_class & ~LOCAL);
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141 }
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142
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143 void unmark_formal ()
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144 {
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145 m_storage_class = static_cast<symrec_t> (m_storage_class & ~FORMAL);
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146 }
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147
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148 void unmark_added_static ()
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149 {
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150 m_storage_class = static_cast<symrec_t> (m_storage_class
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151 & ~ADDED_STATIC);
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152 }
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153
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154 void unmark_variable ()
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155 {
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156 m_storage_class = static_cast<symrec_t> (m_storage_class & ~VARIABLE);
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157 }
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158
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159 OCTAVE_DEPRECATED (10, "symbol_record_rep::unmark_as_variable is obsolete, use unmark_variable")
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160 void unmark_as_variable ()
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161 {
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162 m_storage_class = static_cast<symrec_t> (m_storage_class & ~VARIABLE);
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163 }
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164
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165 unsigned int storage_class () const { return m_storage_class; }
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166
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167 std::shared_ptr<symbol_record_rep> dup () const;
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168
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169 octave_value dump () const;
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170
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171 std::string name () const { return m_name; }
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172
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173 void rename (const std::string& new_name) { m_name = new_name; }
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174
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175 private:
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176
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177 std::size_t m_frame_offset;
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178 std::size_t m_data_offset;
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179
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180 symrec_t m_storage_class;
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181
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182 std::string m_name;
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183 };
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184
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185 public:
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186
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187 symbol_record (const std::string& nm = "", symrec_t sc = LOCAL)
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188 : m_rep (new symbol_record_rep (nm, sc))
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189 { }
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190
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191 symbol_record (const std::string& nm, const octave_value&,
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192 symrec_t sc = LOCAL)
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193 : m_rep (new symbol_record_rep (nm, sc))
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194 { }
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195
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196 symbol_record (const symbol_record&) = default;
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197
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198 symbol_record& operator = (const symbol_record&) = default;
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199
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200 ~symbol_record () = default;
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201
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202 bool is_valid () const { return m_rep->is_valid (); }
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203
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204 explicit operator bool () const { return is_valid (); }
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205
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206 void set_frame_offset (std::size_t offset)
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207 { m_rep->set_frame_offset (offset); }
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208
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209 std::size_t frame_offset () const { return m_rep->frame_offset (); }
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210
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211 void set_data_offset (std::size_t offset)
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212 { m_rep->set_data_offset (offset); }
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213
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214 std::size_t data_offset () const { return m_rep->data_offset (); }
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215
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216 symbol_record dup () const { return symbol_record (m_rep->dup ()); }
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217
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218 std::string name () const { return m_rep->name (); }
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219
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220 void rename (const std::string& new_name) { m_rep->rename (new_name); }
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221
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222 bool is_local () const { return m_rep->is_local (); }
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223 bool is_formal () const { return m_rep->is_formal (); }
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224 bool is_added_static () const { return m_rep->is_added_static (); }
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225 bool is_variable () const { return m_rep->is_variable (); }
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226
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227 void mark_local () { m_rep->mark_local (); }
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228 void mark_formal () { m_rep->mark_formal (); }
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229 void mark_added_static () { m_rep->mark_added_static (); }
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230 void mark_variable () { m_rep->mark_variable (); }
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231 OCTAVE_DEPRECATED (10, "symbol_record::mark_as_variable is obsolete, use mark_variable")
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232 void mark_as_variable () { m_rep->mark_variable (); }
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233
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234 void unmark_local () { m_rep->unmark_local (); }
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235 void unmark_formal () { m_rep->unmark_formal (); }
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236 void unmark_added_static () { m_rep->unmark_added_static (); }
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237 void unmark_variable () { m_rep->unmark_variable (); }
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238 OCTAVE_DEPRECATED (10, "symbol_record::unmark_as_variable is obsolete, use unmark_variable")
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239 void unmark_as_variable () { m_rep->unmark_variable (); }
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240
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241 unsigned int storage_class () const { return m_rep->storage_class (); }
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242
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243 octave_value dump () const { return m_rep->dump (); }
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244
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245 private:
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246
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247 std::shared_ptr<symbol_record_rep> m_rep;
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248
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249 // NEW_REP must be dynamically allocated or nullptr.
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250 symbol_record (const std::shared_ptr<symbol_record_rep>& new_rep)
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251 : m_rep (new_rep)
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252 { }
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253 };
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254
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255 OCTAVE_END_NAMESPACE(octave)
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256
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257 #endif