annotate libinterp/corefcn/interpreter.h @ 23651:5c6cceef132b

don't use singleton for cdef_manager object * ov-classdef.h, ov-classdef.cc (cdef_manager): Don't use singleton pattern. Change all uses. (cdef_manager::m_meta_class, cdef_manager::m_meta_property, cdef_manager::m_meta_method, cdef_manager::m_meta_package, cdef_manager::m_meta): New data members. (cdef_manager::meta_class, cdef_manager::meta_property, cdef_manager::meta_method, cdef_manager::meta_package, cdef_manager::meta): New functions. (cdef_class::meta_class, cdef_class::meta_property, cdef_class::meta_method, cdef_class::meta_package): Delete static functions. (cdef_package::meta): Delete static function. (cdef_class::_meta_class, cdef_class::_meta_property, cdef_class::_meta_method, cdef_class::_meta_package, cdef_package::_meta): Delete static data members. (cdef_manager::initialize): New function, adapted from install_classdef. * interpreter.h, interpreter.cc (interpreter::m_cdef_manager): New data member. (interpreter::get_cdef_manager): New function. (interpreter::interpreter): Initialize m_cdef_manager object instead of calling install_classdef. * interpreter-private.h, interpreter-private.cc (__get_cdef_manager__): New function.
author John W. Eaton <jwe@octave.org>
date Mon, 19 Jun 2017 13:02:32 -0400
parents 8a47d4735655
children 6eb5f6199a5a
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1 /*
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2
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3 Copyright (C) 2002-2017 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 <http://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_interpreter_h)
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24 #define octave_interpreter_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 <string>
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29
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30 #include "quit.h"
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31 #include "str-vec.h"
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32
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33 #include "dynamic-ld.h"
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34 #include "load-path.h"
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35 #include "ov-classdef.h"
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36 #include "pt-eval.h"
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37 #include "symtab.h"
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38
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39 extern OCTINTERP_API bool quit_allowed;
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40
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41 // TRUE means we are ready to interpret commands, but not everything
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42 // is ready for interactive use.
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43 extern OCTINTERP_API bool octave_interpreter_ready;
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44
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45 // TRUE means we've processed all the init code and we are good to go.
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46 extern OCTINTERP_API bool octave_initialized;
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47
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48 namespace octave
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49 {
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50 class call_stack;
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51 class tree_evaluator;
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52
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53 // The application object contains a pointer to the current
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54 // interpreter and the interpreter contains a pointer back to the
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55 // application context so we need a forward declaration for one (or
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56 // both) of them...
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57
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58 class application;
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59
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60 class OCTINTERP_API interpreter
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61 {
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62 public:
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63
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64 // Create an interpreter object and perform basic initialization
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65 // up to the point of reading history and setting the load path.
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66
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67 interpreter (application *app_context = nullptr);
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68
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69 // No copying, at least not yet...
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70
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71 interpreter (const interpreter&) = delete;
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72
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73 interpreter& operator = (const interpreter&) = delete;
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74
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75 // Clean up the interpreter object.
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76
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77 ~interpreter (void);
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78
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79 void intern_nargin (octave_idx_type nargs);
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80
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81 // If creating an embedded interpreter, you may inhibit reading
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82 // the command history file by calling initialize_history with
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83 // read_history_file = false prior to calling initialize.
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84
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85 void initialize_history (bool read_history_file = false);
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86
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87 // If creating an embedded interpreter, you may inhibit setting
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88 // the default compiled-in path by calling intialize_load_path
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89 // with set_initial_path = false prior calling initialize. After
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90 // that, you can add directories to the load path to set up a
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91 // custom path.
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92
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93 void initialize_load_path (bool set_initial_path = true);
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94
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95 // Load command line history, set the load path and execute
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96 // startup files. May throw an exit_exception.
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97
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98 int initialize (void);
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99
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100 // Initialize the interpreter and execute --eval option code,
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101 // script files, and/or interactive commands.
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102
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103 int execute (void);
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104
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105 bool interactive (void) const
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106 {
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107 return m_interactive;
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108 }
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109
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110 void interactive (bool arg)
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111 {
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112 m_interactive = arg;
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113 }
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114
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115 void read_site_files (bool flag)
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116 {
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117 m_read_site_files = flag;
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118 }
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119
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120 void read_init_files (bool flag)
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121 {
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122 m_read_init_files = flag;
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123 }
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124
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125 void verbose (bool flag)
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126 {
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127 m_verbose = flag;
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128 }
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129
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130 void inhibit_startup_message (bool flag)
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131 {
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132 m_inhibit_startup_message = flag;
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133 }
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134
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135 bool initialized (void) const
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136 {
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137 return m_initialized;
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138 }
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139
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140 dynamic_loader& get_dynamic_loader (void)
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141 {
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142 return m_dynamic_loader;
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143 }
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144
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145 load_path& get_load_path (void)
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146 {
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147 return m_load_path;
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148 }
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149
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150 symbol_table& get_symbol_table (void)
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151 {
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152 return m_symbol_table;
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153 }
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154
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155 symbol_table::scope * get_current_scope (void);
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156 symbol_table::scope * require_current_scope (const std::string& who);
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157
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158 call_stack& get_call_stack (void);
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159
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160 tree_evaluator& get_evaluator (void);
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161
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162 cdef_manager& get_cdef_manager (void)
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163 {
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164 return m_cdef_manager;
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165 }
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166
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167 static void recover_from_exception (void);
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168
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169 static void add_atexit_function (const std::string& fname);
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170
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171 static bool remove_atexit_function (const std::string& fname);
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172
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173 static interpreter * the_interpreter (void) { return instance; }
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174
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175 private:
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176
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177 // The interpreter instance; Currently it is only possible to
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178 // have one.
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179 static interpreter *instance;
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180
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181 static std::list<std::string> atexit_functions;
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182
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183 void display_startup_message (void) const;
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184
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185 int execute_startup_files (void) const;
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186
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187 int execute_eval_option_code (void);
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188
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189 int execute_command_line_file (void);
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190
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191 int main_loop (void);
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192
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193 void cleanup (void);
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194
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195 application *m_app_context;
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196
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197 dynamic_loader m_dynamic_loader;
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198
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199 load_path m_load_path;
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200
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201 symbol_table m_symbol_table;
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202
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203 tree_evaluator m_evaluator;
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204
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205 cdef_manager m_cdef_manager;
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206
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207 // TRUE means this is an interactive interpreter (forced or not).
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208 bool m_interactive;
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209
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210 bool m_read_site_files;
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211
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212 bool m_read_init_files;
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213
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214 bool m_verbose;
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215
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216 bool m_inhibit_startup_message;
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217
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218 bool m_load_path_initialized;
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219
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220 bool m_history_initialized;
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221
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222 bool m_initialized;
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223 };
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224 }
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225
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226 #if defined (OCTAVE_USE_DEPRECATED_FUNCTIONS)
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227
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228 OCTAVE_DEPRECATED (4.4, "use 'octave::interpreter::recover_from_exception' instead")
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229 static inline void
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230 recover_from_exception (void)
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231 {
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232 octave::interpreter::recover_from_exception ();
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233 }
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234
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235 OCTAVE_DEPRECATED (4.4, "use 'octave::interpreter::add_atexit_function' instead")
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236 static inline void
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237 add_atexit_function (const std::string& fname)
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238 {
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239 octave::interpreter::add_atexit_function (fname);
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240 }
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241
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242 OCTAVE_DEPRECATED (4.4, "use 'octave::interpreter::remove_atexit_function' instead")
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243 static inline bool
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244 remove_atexit_function (const std::string& fname)
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245 {
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246 return octave::interpreter::remove_atexit_function (fname);
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247 }
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248
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249 #endif
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250
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251 #endif