Mercurial > octave
annotate libinterp/corefcn/interpreter.cc @ 23775:7b43a96c2179
Replace OCTAVE_LOCAL_BUFFER code with std::unique_ptr (bug #48793).
* oct-locbuf.h: Replace handwritten code with call to std::unique_ptr.
Rewrite OCTAVE_LOCAL_BUFFER_INIT to use std::fill_n rather than for loop
with temporary variables that could clash with existing code.
* liboctave/util/oct-locbuf.cc: Delete file.
* liboctave/util/module.mk: Remove oct-locbuf.cc from build system.
* interpreter.cc (interpreter::cleanup): Remove code to clean up chunk_buffer.
author | Rik <rik@octave.org> |
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date | Thu, 20 Jul 2017 09:17:03 -0700 |
parents | 41795b504a8b |
children | 980f39c3ab90 |
rev | line source |
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1 /* |
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2 |
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3 Copyright (C) 1993-2017 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 (HAVE_CONFIG_H) |
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24 # include "config.h" |
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25 #endif |
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26 |
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27 #include <string> |
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28 #include <iostream> |
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29 |
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30 #include "cmd-edit.h" |
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31 #include "cmd-hist.h" |
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32 #include "file-ops.h" |
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33 #include "file-stat.h" |
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34 #include "fpucw-wrappers.h" |
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35 #include "lo-blas-proto.h" |
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36 #include "lo-error.h" |
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37 #include "oct-env.h" |
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38 #include "str-vec.h" |
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39 #include "signal-wrappers.h" |
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40 #include "unistd-wrappers.h" |
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41 |
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42 #include "builtin-defun-decls.h" |
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43 #include "builtins.h" |
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44 #include "defaults.h" |
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45 #include "Cell.h" |
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46 #include "call-stack.h" |
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47 #include "defun.h" |
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48 #include "display.h" |
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49 #include "error.h" |
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50 #include "file-io.h" |
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51 #include "graphics.h" |
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52 #include "help.h" |
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53 #include "interpreter-private.h" |
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54 #include "interpreter.h" |
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55 #include "load-path.h" |
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56 #include "load-save.h" |
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57 #include "octave-link.h" |
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58 #include "octave.h" |
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59 #include "oct-hist.h" |
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60 #include "oct-map.h" |
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61 #include "oct-mutex.h" |
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62 #include "ops.h" |
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63 #include "ovl.h" |
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64 #include "ov.h" |
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65 #include "ov-classdef.h" |
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66 #include "parse.h" |
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67 #include "pt-eval.h" |
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68 #include "pt-jump.h" |
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69 #include "pt-mat.h" |
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70 #include "pt-stmt.h" |
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71 #include "sighandlers.h" |
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72 #include "sysdep.h" |
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73 #include "unwind-prot.h" |
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74 #include "utils.h" |
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75 #include "variables.h" |
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76 #include "version.h" |
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77 |
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78 // TRUE means the quit() call is allowed. |
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79 bool quit_allowed = true; |
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80 |
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81 // TRUE means we are ready to interpret commands, but not everything |
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82 // is ready for interactive use. |
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83 bool octave_interpreter_ready = false; |
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84 |
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85 // TRUE means we've processed all the init code and we are good to go. |
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86 bool octave_initialized = false; |
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87 |
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88 DEFUN (__version_info__, args, , |
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89 doc: /* -*- texinfo -*- |
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90 @deftypefn {} {retval =} __version_info__ (@var{name}, @var{version}, @var{release}, @var{date}) |
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91 Undocumented internal function. |
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92 @end deftypefn */) |
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93 { |
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94 static octave_map vinfo; |
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95 |
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96 int nargin = args.length (); |
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97 |
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98 if (nargin != 0 && nargin != 4) |
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99 print_usage (); |
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100 |
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101 octave_value retval; |
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102 |
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103 if (nargin == 0) |
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104 retval = vinfo; |
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105 else if (nargin == 4) |
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106 { |
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107 if (vinfo.nfields () == 0) |
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108 { |
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109 vinfo.assign ("Name", args(0)); |
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110 vinfo.assign ("Version", args(1)); |
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111 vinfo.assign ("Release", args(2)); |
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112 vinfo.assign ("Date", args(3)); |
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113 } |
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114 else |
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115 { |
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116 octave_idx_type n = vinfo.numel () + 1; |
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117 |
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118 vinfo.resize (dim_vector (n, 1)); |
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119 |
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120 octave_value idx (n); |
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121 |
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122 vinfo.assign (idx, "Name", Cell (octave_value (args(0)))); |
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123 vinfo.assign (idx, "Version", Cell (octave_value (args(1)))); |
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124 vinfo.assign (idx, "Release", Cell (octave_value (args(2)))); |
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125 vinfo.assign (idx, "Date", Cell (octave_value (args(3)))); |
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126 } |
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127 } |
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128 |
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129 return retval; |
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130 } |
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131 |
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132 static void |
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133 initialize_version_info (void) |
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134 { |
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135 octave_value_list args; |
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136 |
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137 args(3) = OCTAVE_RELEASE_DATE; |
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138 args(2) = octave::config::release (); |
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139 args(1) = OCTAVE_VERSION; |
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140 args(0) = "GNU Octave"; |
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141 |
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142 F__version_info__ (args, 0); |
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143 } |
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144 |
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145 OCTAVE_NORETURN static void |
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146 lo_error_handler (const char *fmt, ...) |
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147 { |
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148 va_list args; |
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149 va_start (args, fmt); |
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150 verror_with_cfn (fmt, args); |
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151 va_end (args); |
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152 |
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153 octave_throw_execution_exception (); |
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154 } |
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155 |
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156 OCTAVE_NORETURN static void |
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157 lo_error_with_id_handler (const char *id, const char *fmt, ...) |
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158 { |
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159 va_list args; |
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160 va_start (args, fmt); |
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161 verror_with_id_cfn (id, fmt, args); |
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162 va_end (args); |
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163 |
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164 octave_throw_execution_exception (); |
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165 } |
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166 |
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167 static void |
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168 initialize_error_handlers () |
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169 { |
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170 set_liboctave_error_handler (lo_error_handler); |
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171 set_liboctave_error_with_id_handler (lo_error_with_id_handler); |
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172 set_liboctave_warning_handler (warning); |
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173 set_liboctave_warning_with_id_handler (warning_with_id); |
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174 } |
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175 |
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176 DEFUN (quit, args, , |
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177 doc: /* -*- texinfo -*- |
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178 @deftypefn {} {} exit |
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179 @deftypefnx {} {} exit (@var{status}) |
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180 @deftypefnx {} {} quit |
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181 @deftypefnx {} {} quit (@var{status}) |
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182 Exit the current Octave session. |
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183 |
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184 If the optional integer value @var{status} is supplied, pass that value to |
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185 the operating system as Octave's exit status. The default value is zero. |
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186 |
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187 When exiting, Octave will attempt to run the m-file @file{finish.m} if it |
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188 exists. User commands to save the workspace or clean up temporary files |
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189 may be placed in that file. Alternatively, another m-file may be scheduled |
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190 to run using @code{atexit}. |
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191 @seealso{atexit} |
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192 @end deftypefn */) |
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193 { |
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194 // Confirm OK to shutdown. Note: A dynamic function installation similar |
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195 // to overriding polymorphism for which the GUI can install its own "quit" |
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196 // yet call this base "quit" could be nice. No link would be needed here. |
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197 if (! octave_link::confirm_shutdown ()) |
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198 return ovl (); |
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199 |
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200 if (! quit_allowed) |
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201 error ("quit: not supported in embedded mode"); |
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202 |
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203 int exit_status = 0; |
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204 |
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205 if (args.length () > 0) |
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206 exit_status = args(0).nint_value (); |
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207 |
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208 // Instead of simply calling exit, we thrown an exception so that no |
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209 // matter where the call to quit occurs, we will run the |
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210 // unwind_protect stack, clear the OCTAVE_LOCAL_BUFFER allocations, |
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211 // etc. before exiting. |
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212 |
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213 throw octave::exit_exception (exit_status); |
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214 |
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215 return ovl (); |
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216 } |
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217 |
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218 DEFALIAS (exit, quit); |
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219 |
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220 DEFUN (atexit, args, nargout, |
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221 doc: /* -*- texinfo -*- |
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222 @deftypefn {} {} atexit (@var{fcn}) |
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223 @deftypefnx {} {} atexit (@var{fcn}, @var{flag}) |
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224 Register a function to be called when Octave exits. |
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225 |
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226 For example, |
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227 |
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228 @example |
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229 @group |
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230 function last_words () |
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231 disp ("Bye bye"); |
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232 endfunction |
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233 atexit ("last_words"); |
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234 @end group |
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235 @end example |
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236 |
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237 @noindent |
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238 will print the message @qcode{"Bye bye"} when Octave exits. |
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239 |
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240 The additional argument @var{flag} will register or unregister @var{fcn} |
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241 from the list of functions to be called when Octave exits. If @var{flag} is |
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242 true, the function is registered, and if @var{flag} is false, it is |
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243 unregistered. For example, after registering the function @code{last_words} |
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244 above, |
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245 |
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246 @example |
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247 atexit ("last_words", false); |
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248 @end example |
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249 |
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250 @noindent |
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251 will remove the function from the list and Octave will not call |
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252 @code{last_words} when it exits. |
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253 |
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254 Note that @code{atexit} only removes the first occurrence of a function |
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255 from the list, so if a function was placed in the list multiple times with |
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256 @code{atexit}, it must also be removed from the list multiple times. |
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257 @seealso{quit} |
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258 @end deftypefn */) |
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259 { |
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260 int nargin = args.length (); |
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261 |
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262 if (nargin < 1 || nargin > 2) |
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263 print_usage (); |
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264 |
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265 std::string arg = args(0).xstring_value ("atexit: FCN argument must be a string"); |
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266 |
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267 bool add_mode = (nargin == 2) |
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268 ? args(1).xbool_value ("atexit: FLAG argument must be a logical value") |
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269 : true; |
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270 |
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271 octave_value_list retval; |
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272 |
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273 if (add_mode) |
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274 octave::interpreter::add_atexit_function (arg); |
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275 else |
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276 { |
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277 bool found = octave::interpreter::remove_atexit_function (arg); |
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278 |
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279 if (nargout > 0) |
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280 retval = ovl (found); |
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281 } |
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282 |
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283 return retval; |
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284 } |
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285 |
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286 // Execute commands from a file and catch potential exceptions in a consistent |
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287 // way. This function should be called anywhere we might parse and execute |
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288 // commands from a file before we have entered the main loop in |
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289 // toplev.cc. |
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290 |
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291 static int |
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292 safe_source_file (const std::string& file_name, |
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293 const std::string& context = "", |
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294 bool verbose = false, bool require_file = true, |
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295 const std::string& warn_for = "") |
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296 { |
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297 try |
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298 { |
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299 octave::source_file (file_name, context, verbose, require_file, warn_for); |
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300 } |
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301 catch (const octave::interrupt_exception&) |
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302 { |
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303 octave::interpreter::recover_from_exception (); |
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304 |
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305 return 1; |
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306 } |
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307 catch (const octave::execution_exception& e) |
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308 { |
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309 std::string stack_trace = e.info (); |
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310 |
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311 if (! stack_trace.empty ()) |
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312 std::cerr << stack_trace; |
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313 |
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314 octave::interpreter::recover_from_exception (); |
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315 |
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316 return 1; |
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317 } |
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318 |
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319 return 0; |
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320 } |
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321 |
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322 static void |
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323 execute_pkg_add (const std::string& dir) |
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324 { |
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325 std::string file_name = octave::sys::file_ops::concat (dir, "PKG_ADD"); |
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326 |
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327 octave::load_path& lp = octave::__get_load_path__ ("execute_pkg_add"); |
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328 |
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329 try |
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330 { |
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331 lp.execute_pkg_add (dir); |
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332 } |
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333 catch (const octave::interrupt_exception&) |
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334 { |
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335 octave::interpreter::recover_from_exception (); |
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336 } |
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337 catch (const octave::execution_exception&) |
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338 { |
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339 octave::interpreter::recover_from_exception (); |
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340 } |
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341 } |
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342 |
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343 namespace octave |
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344 { |
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345 // Create an interpreter object and perform initialization up to the |
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346 // point of setting reading command history and setting the load |
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347 // path. |
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348 |
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349 interpreter::interpreter (application *app_context) |
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350 : m_app_context (app_context), |
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351 m_environment (), |
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352 m_help_system (*this), |
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353 m_dynamic_loader (*this), |
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354 m_load_path (), |
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355 m_symbol_table (), |
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356 m_evaluator (*this), |
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357 m_stream_list (*this), |
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358 m_url_handle_manager (), |
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359 m_cdef_manager (*this), |
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360 m_gtk_manager (), |
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361 m_interactive (false), |
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362 m_read_site_files (true), |
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363 m_read_init_files (m_app_context != 0), |
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364 m_verbose (false), |
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365 m_inhibit_startup_message (false), |
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366 m_load_path_initialized (false), |
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367 m_history_initialized (false), |
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368 m_initialized (false) |
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369 { |
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370 if (instance) |
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371 throw std::runtime_error |
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372 ("only one Octave interpreter object may be active"); |
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373 |
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374 instance = this; |
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375 |
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376 // Matlab uses "C" locale for LC_NUMERIC class regardless of local setting |
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377 setlocale (LC_NUMERIC, "C"); |
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378 setlocale (LC_TIME, "C"); |
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379 sys::env::putenv ("LC_NUMERIC", "C"); |
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380 sys::env::putenv ("LC_TIME", "C"); |
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381 |
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382 // Initialize the default floating point unit control state. |
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383 octave_set_default_fpucw (); |
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384 |
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385 thread::init (); |
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386 |
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387 set_default_prompts (); |
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388 |
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389 // Initialize default warning state before --traditional option |
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390 // that may reset them. |
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391 |
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392 initialize_default_warning_state (); |
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393 |
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394 octave_ieee_init (); |
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395 |
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396 octave_prepare_hdf5 (); |
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397 |
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398 // The idea here is to force xerbla to be referenced so that we will link to |
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399 // our own version instead of the one provided by the BLAS library. But |
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400 // numeric_limits<double>::NaN () should never be -1, so we |
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401 // should never actually call xerbla. FIXME (again!): If this |
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402 // becomes a constant expression the test might be optimized away and |
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403 // then the reference to the function might also disappear. |
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404 |
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405 if (numeric_limits<double>::NaN () == -1) |
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406 F77_FUNC (xerbla, XERBLA) ("octave", 13 F77_CHAR_ARG_LEN (6)); |
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407 |
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408 initialize_error_handlers (); |
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409 |
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410 if (m_app_context) |
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411 install_signal_handlers (); |
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412 else |
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413 quit_allowed = false; |
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414 |
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415 install_types (); |
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416 |
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417 install_ops (); |
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418 |
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419 install_builtins (); |
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420 |
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421 m_cdef_manager.initialize (); |
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422 |
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423 bool line_editing = false; |
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424 bool traditional = false; |
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425 |
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426 if (m_app_context) |
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427 { |
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428 // Embedded interpeters don't execute command line options. |
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429 const cmdline_options& options = m_app_context->options (); |
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430 |
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431 // Make all command-line arguments available to startup files, |
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432 // including PKG_ADD files. |
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433 |
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434 string_vector args = options.all_args (); |
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435 |
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436 m_app_context->intern_argv (args); |
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437 intern_nargin (args.numel () - 1); |
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438 |
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439 bool is_octave_program = m_app_context->is_octave_program (); |
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440 |
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441 std::list<std::string> command_line_path = options.command_line_path (); |
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442 |
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443 for (const auto& pth : command_line_path) |
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444 m_load_path.set_command_line_path (pth); |
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445 |
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446 std::string exec_path = options.exec_path (); |
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447 if (! exec_path.empty ()) |
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448 m_environment.exec_path (exec_path); |
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449 |
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450 std::string image_path = options.image_path (); |
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451 if (! image_path.empty ()) |
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452 m_environment.image_path (image_path); |
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453 |
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454 if (options.no_window_system ()) |
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455 display_info::no_window_system (); |
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456 |
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457 // Is input coming from a terminal? If so, we are probably |
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458 // interactive. |
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459 |
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460 // If stdin is not a tty, then we are reading commands from a |
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461 // pipe or a redirected file. |
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462 bool stdin_is_tty = octave_isatty_wrapper (fileno (stdin)); |
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463 |
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464 m_interactive = (! is_octave_program && stdin_is_tty |
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465 && octave_isatty_wrapper (fileno (stdout))); |
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466 |
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467 // Check if the user forced an interactive session. |
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468 if (options.forced_interactive ()) |
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469 m_interactive = true; |
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470 |
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471 line_editing = options.line_editing (); |
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472 if ((! m_interactive || options.forced_interactive ()) |
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473 && ! options.forced_line_editing ()) |
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474 line_editing = false; |
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475 |
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476 traditional = options.traditional (); |
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477 |
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478 // FIXME: if possible, perform the following actions directly |
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479 // instead of using the interpreter-level functions. |
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480 |
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481 if (options.echo_commands ()) |
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482 m_evaluator.echo |
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483 (tree_evaluator::ECHO_SCRIPTS | tree_evaluator::ECHO_FUNCTIONS); |
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484 |
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485 std::string docstrings_file = options.docstrings_file (); |
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486 if (! docstrings_file.empty ()) |
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487 Fbuilt_in_docstrings_file (*this, octave_value (docstrings_file)); |
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488 |
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489 std::string doc_cache_file = options.doc_cache_file (); |
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490 if (! doc_cache_file.empty ()) |
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491 Fdoc_cache_file (*this, octave_value (doc_cache_file)); |
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492 |
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493 std::string info_file = options.info_file (); |
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494 if (! info_file.empty ()) |
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495 Finfo_file (*this, octave_value (info_file)); |
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496 |
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497 std::string info_program = options.info_program (); |
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498 if (! info_program.empty ()) |
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499 Finfo_program (*this, octave_value (info_program)); |
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500 |
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501 if (options.debug_jit ()) |
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502 Fdebug_jit (octave_value (true)); |
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503 |
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504 if (options.jit_compiler ()) |
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505 Fjit_enable (octave_value (true)); |
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506 |
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507 std::string texi_macros_file = options.texi_macros_file (); |
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508 if (! texi_macros_file.empty ()) |
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509 Ftexi_macros_file (*this, octave_value (texi_macros_file)); |
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510 } |
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511 |
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512 // Force default line editor if we don't want readline editing. |
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513 if (line_editing) |
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514 initialize_command_input (); |
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515 else |
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516 command_editor::force_default_editor (); |
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517 |
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518 // These can come after command line args since none of them set any |
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519 // defaults that might be changed by command line options. |
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520 |
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521 initialize_version_info (); |
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522 |
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523 // This should be done before initializing the load path because |
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524 // some PKG_ADD files might need --traditional behavior. |
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525 |
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526 if (traditional) |
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527 maximum_braindamage (); |
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528 |
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529 octave_interpreter_ready = true; |
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530 } |
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531 |
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532 interpreter *interpreter::instance = nullptr; |
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533 |
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534 interpreter::~interpreter (void) |
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535 { |
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536 cleanup (); |
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537 } |
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538 |
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539 void interpreter::intern_nargin (octave_idx_type nargs) |
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540 { |
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541 // FIXME: should this explicitly be top_scope? |
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542 symbol_table::scope *scope = m_symbol_table.current_scope (); |
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543 |
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544 if (scope) |
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545 { |
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546 scope->assign (".nargin.", nargs); |
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547 scope->mark_hidden (".nargin."); |
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548 } |
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549 } |
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550 |
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551 // Read the history file unless a command-line option inhibits that. |
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552 |
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553 void interpreter::initialize_history (bool read_history_file) |
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554 { |
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555 if (! m_history_initialized) |
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556 { |
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557 // Allow command-line option to override. |
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558 |
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559 if (m_app_context) |
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560 { |
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561 const cmdline_options& options = m_app_context->options (); |
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562 |
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563 read_history_file = options.read_history_file (); |
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564 |
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565 if (! read_history_file) |
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566 command_history::ignore_entries (); |
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567 } |
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568 |
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569 ::initialize_history (read_history_file); |
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570 |
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571 if (! m_app_context) |
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572 command_history::ignore_entries (); |
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573 |
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574 m_history_initialized = true; |
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575 } |
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576 } |
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577 |
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578 // Set the initial path to the system default unless command-line |
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579 // option says to leave it empty. |
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580 |
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581 void interpreter::initialize_load_path (bool set_initial_path) |
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582 { |
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583 if (! m_load_path_initialized) |
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584 { |
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585 // Allow command-line option to override. |
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586 |
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587 if (m_app_context) |
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588 { |
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589 const cmdline_options& options = m_app_context->options (); |
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590 |
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591 set_initial_path = options.set_initial_path (); |
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592 } |
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593 |
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594 // Temporarily set the execute_pkg_add function to one that |
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595 // catches exceptions. This is better than wrapping |
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596 // load_path::initialize in a try-catch block because it will |
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597 // not stop executing PKG_ADD files at the first exception. |
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598 // It's also better than changing the default execute_pkg_add |
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599 // function to use safe_source file because that will normally |
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600 // be evaluated from the normal intepreter loop where exceptions |
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601 // are already handled. |
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602 |
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603 unwind_protect frame; |
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604 |
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605 frame.add_method (m_load_path, &load_path::set_add_hook, |
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606 m_load_path.get_add_hook ()); |
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607 |
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608 m_load_path.set_add_hook (execute_pkg_add); |
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609 |
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610 m_load_path.initialize (set_initial_path); |
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611 |
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612 m_load_path_initialized = true; |
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613 } |
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614 } |
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615 |
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616 // This may be called separately from execute |
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617 |
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618 int interpreter::initialize (void) |
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619 { |
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620 if (m_initialized) |
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621 return 0; |
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622 |
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623 display_startup_message (); |
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624 |
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625 // Wait to read the history file until the interpreter reads input |
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626 // files and begins evaluating commands. |
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627 |
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|
628 initialize_history (); |
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629 |
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630 // Initializing the load path may execute PKG_ADD files, so can't be |
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631 // done until the interpreter is ready to execute commands. |
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632 |
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633 // Deferring it to the execute step also allows the path to be |
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634 // initialized between creating and execute the interpreter, for |
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635 // example, to set a custom path for an embedded interpreter. |
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636 |
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637 initialize_load_path (); |
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638 |
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639 // We ignore errors in startup files. |
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640 |
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641 execute_startup_files (); |
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642 |
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643 int exit_status = 0; |
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644 |
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645 if (m_app_context) |
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646 { |
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647 const cmdline_options& options = m_app_context->options (); |
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648 |
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649 if (m_app_context->have_eval_option_code ()) |
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650 { |
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651 int status = execute_eval_option_code (); |
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652 |
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653 if (status ) |
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654 exit_status = status; |
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655 |
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656 if (! options.persist ()) |
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657 return exit_status; |
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658 } |
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659 |
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660 // If there is an extra argument, see if it names a file to |
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661 // read. Additional arguments are taken as command line options |
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662 // for the script. |
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663 |
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664 if (m_app_context->have_script_file ()) |
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665 { |
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666 int status = execute_command_line_file (); |
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667 |
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668 if (status) |
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669 exit_status = status; |
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670 |
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671 if (! options.persist ()) |
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672 return exit_status; |
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673 } |
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674 |
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675 if (options.forced_interactive ()) |
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676 command_editor::blink_matching_paren (false); |
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677 } |
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678 |
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679 // Avoid counting commands executed from startup or script files. |
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680 |
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681 command_editor::reset_current_command_number (1); |
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682 |
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683 m_initialized = true; |
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684 |
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685 return exit_status; |
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686 } |
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687 |
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688 int interpreter::execute (void) |
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689 { |
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690 try |
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691 { |
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692 int status = initialize (); |
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693 |
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694 if (! m_initialized) |
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695 return status; |
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696 |
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697 return main_loop (); |
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698 } |
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699 catch (const exit_exception& ex) |
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700 { |
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701 return ex.exit_status (); |
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702 } |
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703 } |
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704 |
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705 void interpreter::display_startup_message (void) const |
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706 { |
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707 bool inhibit_startup_message = false; |
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708 |
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709 if (m_app_context) |
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710 { |
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711 const cmdline_options& options = m_app_context->options (); |
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712 |
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713 inhibit_startup_message = options.inhibit_startup_message (); |
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714 } |
23396
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715 |
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716 if (m_interactive && ! inhibit_startup_message) |
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717 std::cout << octave_startup_message () << "\n" << std::endl; |
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718 } |
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|
719 |
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720 // Initialize by reading startup files. Return non-zero if an exception |
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721 // occurs when reading any of them, but don't exit early because of an |
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722 // exception. |
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|
723 |
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724 int interpreter::execute_startup_files (void) const |
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725 { |
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726 bool read_site_files = m_read_site_files; |
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727 bool read_init_files = m_read_init_files; |
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728 bool verbose = m_verbose; |
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729 bool inhibit_startup_message = m_inhibit_startup_message; |
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|
730 |
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731 if (m_app_context) |
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732 { |
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733 const cmdline_options& options = m_app_context->options (); |
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734 |
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735 read_site_files = options.read_site_files (); |
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736 read_init_files = options.read_init_files (); |
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737 verbose = options.verbose_flag (); |
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738 inhibit_startup_message = options.inhibit_startup_message (); |
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739 } |
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|
740 |
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741 verbose = (verbose && ! inhibit_startup_message); |
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742 |
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|
743 bool require_file = false; |
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|
744 |
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|
745 std::string context; |
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|
746 |
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|
747 int exit_status = 0; |
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|
748 |
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|
749 if (read_site_files) |
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|
750 { |
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|
751 // Execute commands from the site-wide configuration file. |
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752 // First from the file $(prefix)/lib/octave/site/m/octaverc |
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753 // (if it exists), then from the file |
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754 // $(prefix)/share/octave/$(version)/m/octaverc (if it exists). |
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|
755 |
23717
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|
756 int status = safe_source_file (config::local_site_defaults_file (), |
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|
757 context, verbose, require_file); |
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|
758 |
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|
759 if (status) |
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changeset
|
760 exit_status = status; |
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diff
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|
761 |
23717
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diff
changeset
|
762 status = safe_source_file (config::site_defaults_file (), |
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|
763 context, verbose, require_file); |
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|
764 |
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changeset
|
765 if (status) |
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diff
changeset
|
766 exit_status = status; |
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|
767 } |
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diff
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|
768 |
23102
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diff
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|
769 if (read_init_files) |
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diff
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|
770 { |
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diff
changeset
|
771 // Try to execute commands from $HOME/$OCTAVE_INITFILE and |
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772 // $OCTAVE_INITFILE. If $OCTAVE_INITFILE is not set, |
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773 // .octaverc is assumed. |
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774 |
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775 bool home_rc_already_executed = false; |
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776 |
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777 std::string initfile = sys::env::getenv ("OCTAVE_INITFILE"); |
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778 |
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779 if (initfile.empty ()) |
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780 initfile = ".octaverc"; |
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781 |
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782 std::string home_dir = sys::env::get_home_directory (); |
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783 |
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784 std::string home_rc = sys::env::make_absolute (initfile, home_dir); |
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785 |
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786 std::string local_rc; |
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787 |
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788 if (! home_rc.empty ()) |
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789 { |
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790 int status = safe_source_file (home_rc, context, verbose, |
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791 require_file); |
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792 |
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793 if (status) |
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794 exit_status = status; |
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795 |
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796 // Names alone are not enough. |
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797 |
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798 sys::file_stat fs_home_rc (home_rc); |
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799 |
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800 if (fs_home_rc) |
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801 { |
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802 // We want to check for curr_dir after executing home_rc |
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803 // because doing that may change the working directory. |
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804 |
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805 local_rc = sys::env::make_absolute (initfile); |
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806 |
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807 home_rc_already_executed = same_file (home_rc, local_rc); |
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808 } |
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809 } |
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810 |
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811 if (! home_rc_already_executed) |
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812 { |
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813 if (local_rc.empty ()) |
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814 local_rc = sys::env::make_absolute (initfile); |
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815 |
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816 int status = safe_source_file (local_rc, context, verbose, |
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817 require_file); |
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818 |
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819 if (status) |
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820 exit_status = status; |
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821 } |
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822 } |
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823 |
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824 if (m_interactive && verbose) |
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825 std::cout << std::endl; |
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826 |
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827 return exit_status; |
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828 } |
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829 |
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830 // Execute any code specified with --eval 'CODE' |
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831 |
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832 int interpreter::execute_eval_option_code (void) |
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833 { |
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834 const cmdline_options& options = m_app_context->options (); |
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835 |
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836 std::string code_to_eval = options.code_to_eval (); |
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837 |
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838 unwind_protect frame; |
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839 |
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840 octave_save_signal_mask (); |
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841 |
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842 can_interrupt = true; |
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843 |
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844 octave_signal_hook = signal_handler; |
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845 octave_interrupt_hook = 0; |
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846 octave_bad_alloc_hook = 0; |
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847 |
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848 catch_interrupts (); |
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849 |
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850 octave_initialized = true; |
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851 |
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852 frame.add_method (this, &interpreter::interactive, m_interactive); |
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853 |
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854 m_interactive = false; |
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855 |
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856 int parse_status = 0; |
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857 |
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858 try |
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859 { |
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860 eval_string (code_to_eval, false, parse_status, 0); |
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861 } |
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862 catch (const interrupt_exception&) |
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863 { |
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864 recover_from_exception (); |
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865 |
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866 return 1; |
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867 } |
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868 catch (const execution_exception&) |
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869 { |
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870 recover_from_exception (); |
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871 |
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872 return 1; |
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873 } |
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874 |
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875 return parse_status; |
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876 } |
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877 |
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878 int interpreter::execute_command_line_file (void) |
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879 { |
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880 const cmdline_options& options = m_app_context->options (); |
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881 |
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882 unwind_protect frame; |
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883 |
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884 octave_save_signal_mask (); |
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885 |
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886 can_interrupt = true; |
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887 |
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888 octave_signal_hook = signal_handler; |
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889 octave_interrupt_hook = 0; |
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890 octave_bad_alloc_hook = 0; |
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891 |
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892 catch_interrupts (); |
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893 |
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894 octave_initialized = true; |
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895 |
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896 frame.add_method (this, &interpreter::interactive, m_interactive); |
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897 |
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898 string_vector args = options.all_args (); |
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899 |
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900 frame.add_method (m_app_context, &application::intern_argv, args); |
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901 |
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902 frame.add_method (this, &interpreter::intern_nargin, args.numel () - 1); |
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903 |
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|
904 frame.add_method (m_app_context, |
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905 &application::program_invocation_name, |
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|
906 application::program_invocation_name ()); |
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|
907 |
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|
908 frame.add_method (m_app_context, |
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|
909 &application::program_name, |
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changeset
|
910 application::program_name ()); |
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|
911 |
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|
912 m_interactive = false; |
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|
913 |
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refactor interpreter::execute
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diff
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|
914 // If we are running an executable script (#! /bin/octave) then |
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refactor interpreter::execute
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23100
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915 // we should only see the args passed to the script. |
373771419d51
refactor interpreter::execute
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|
916 |
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refactor interpreter::execute
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917 string_vector script_args = options.remaining_args (); |
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918 |
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refactor interpreter::execute
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|
919 m_app_context->intern_argv (script_args); |
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920 intern_nargin (script_args.numel () - 1); |
23102
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|
921 |
373771419d51
refactor interpreter::execute
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922 std::string fname = script_args[0]; |
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refactor interpreter::execute
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|
923 |
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924 m_app_context->set_program_names (fname); |
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925 |
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|
926 std::string context; |
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|
927 bool verbose = false; |
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|
928 bool require_file = true; |
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diff
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|
929 |
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930 return safe_source_file (fname, context, verbose, require_file, "octave"); |
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931 } |
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|
932 |
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|
933 int interpreter::main_loop (void) |
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934 { |
23111
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935 if (! m_app_context) |
23104
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fix thinko in previous change
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|
936 return 0; |
2805cc365a86
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|
937 |
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|
938 octave_save_signal_mask (); |
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939 |
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940 can_interrupt = true; |
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941 |
23696
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942 octave_signal_hook = signal_handler; |
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|
943 octave_interrupt_hook = 0; |
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|
944 octave_bad_alloc_hook = 0; |
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|
945 |
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|
946 catch_interrupts (); |
22094
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changeset
|
947 |
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|
948 octave_initialized = true; |
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|
949 |
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|
950 // The big loop. |
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|
951 |
23696
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952 lexer *lxr = (application::interactive () |
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953 ? new lexer () |
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954 : new lexer (stdin)); |
22094
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|
955 |
23696
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|
956 parser parser (*lxr); |
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|
957 |
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|
958 int retval = 0; |
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|
959 do |
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|
960 { |
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changeset
|
961 try |
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changeset
|
962 { |
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changeset
|
963 reset_error_handler (); |
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|
964 |
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changeset
|
965 parser.reset (); |
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|
966 |
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|
967 if (m_symbol_table.at_top_level ()) |
23696
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|
968 tree_evaluator::reset_debug_state (); |
22094
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|
969 |
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|
970 retval = parser.run (); |
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|
971 |
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|
972 if (retval == 0) |
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changeset
|
973 { |
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4a62da62af09
use m_ prefix for member variables in parser
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|
974 if (parser.m_stmt_list) |
22094
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|
975 { |
23694
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changeset
|
976 parser.m_stmt_list->accept (m_evaluator); |
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|
977 |
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changeset
|
978 octave_quit (); |
9203833cab7d
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changeset
|
979 |
23696
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changeset
|
980 if (! application::interactive ()) |
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changeset
|
981 { |
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diff
changeset
|
982 bool quit = (tree_return_command::returning |
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changeset
|
983 || tree_break_command::breaking); |
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changeset
|
984 |
9203833cab7d
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changeset
|
985 if (tree_return_command::returning) |
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diff
changeset
|
986 tree_return_command::returning = 0; |
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parents:
diff
changeset
|
987 |
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parents:
diff
changeset
|
988 if (tree_break_command::breaking) |
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parents:
diff
changeset
|
989 tree_break_command::breaking--; |
9203833cab7d
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parents:
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changeset
|
990 |
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parents:
diff
changeset
|
991 if (quit) |
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parents:
diff
changeset
|
992 break; |
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changeset
|
993 } |
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changeset
|
994 |
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parents:
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changeset
|
995 if (octave_completion_matches_called) |
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diff
changeset
|
996 octave_completion_matches_called = false; |
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diff
changeset
|
997 else |
23696
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23694
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changeset
|
998 command_editor::increment_current_command_number (); |
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changeset
|
999 } |
23694
4a62da62af09
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John W. Eaton <jwe@octave.org>
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|
1000 else if (parser.m_lexer.end_of_input) |
23111
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23110
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changeset
|
1001 { |
252975fdc444
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diff
changeset
|
1002 retval = EOF; |
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23110
diff
changeset
|
1003 break; |
252975fdc444
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23110
diff
changeset
|
1004 } |
22094
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changeset
|
1005 } |
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changeset
|
1006 } |
23696
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changeset
|
1007 catch (const interrupt_exception&) |
22094
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changeset
|
1008 { |
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changeset
|
1009 recover_from_exception (); |
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changeset
|
1010 |
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changeset
|
1011 // Required newline when the user does Ctrl+C at the prompt. |
23696
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|
1012 if (application::interactive ()) |
22094
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changeset
|
1013 octave_stdout << "\n"; |
9203833cab7d
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changeset
|
1014 } |
23696
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changeset
|
1015 catch (const index_exception& e) |
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changeset
|
1016 { |
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changeset
|
1017 recover_from_exception (); |
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changeset
|
1018 |
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changeset
|
1019 std::cerr << "error: unhandled index exception: " |
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|
1020 << e.message () << " -- trying to return to prompt" |
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changeset
|
1021 << std::endl; |
9203833cab7d
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changeset
|
1022 } |
23696
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changeset
|
1023 catch (const execution_exception& e) |
22094
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changeset
|
1024 { |
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changeset
|
1025 std::string stack_trace = e.info (); |
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changeset
|
1026 |
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changeset
|
1027 if (! stack_trace.empty ()) |
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changeset
|
1028 std::cerr << stack_trace; |
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diff
changeset
|
1029 |
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changeset
|
1030 if (application::interactive ()) |
22094
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diff
changeset
|
1031 recover_from_exception (); |
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diff
changeset
|
1032 else |
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diff
changeset
|
1033 { |
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diff
changeset
|
1034 // We should exit with a nonzero status. |
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parents:
diff
changeset
|
1035 retval = 1; |
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parents:
diff
changeset
|
1036 break; |
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parents:
diff
changeset
|
1037 } |
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1038 } |
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1039 catch (const std::bad_alloc&) |
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1040 { |
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1041 recover_from_exception (); |
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1042 |
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1043 std::cerr << "error: out of memory -- trying to return to prompt" |
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1044 << std::endl; |
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1045 } |
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1046 |
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1047 #if defined (DBSTOP_NANINF) |
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1048 if (Vdebug_on_naninf) |
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1049 { |
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1050 if (setjump (naninf_jump) != 0) |
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1051 debug_or_throw_exception (true); // true = stack trace |
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1052 } |
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1053 #endif |
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1054 } |
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1055 while (retval == 0); |
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1056 |
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1057 if (retval == EOF) |
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1058 { |
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1059 if (application::interactive ()) |
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1060 octave_stdout << "\n"; |
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1061 |
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1062 retval = 0; |
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1063 } |
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1064 |
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1065 return retval; |
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1066 } |
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1067 |
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1068 // Call a function with exceptions handled to avoid problems with |
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1069 // errors while shutting down. |
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1070 |
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1071 #define OCTAVE_IGNORE_EXCEPTION(E) \ |
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1072 catch (E) \ |
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1073 { \ |
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1074 recover_from_exception (); \ |
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1075 \ |
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1076 std::cerr << "error: ignoring " #E " while preparing to exit" \ |
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1077 << std::endl; \ |
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1078 } |
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1079 |
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1080 #define OCTAVE_SAFE_CALL(F, ARGS) \ |
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1081 do \ |
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1082 { \ |
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1083 try \ |
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1084 { \ |
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1085 unwind_protect frame; \ |
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1086 \ |
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1087 frame.protect_var (Vdebug_on_error); \ |
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1088 frame.protect_var (Vdebug_on_warning); \ |
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1089 \ |
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1090 Vdebug_on_error = false; \ |
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1091 Vdebug_on_warning = false; \ |
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1092 \ |
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1093 F ARGS; \ |
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1094 } \ |
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1095 OCTAVE_IGNORE_EXCEPTION (const exit_exception&) \ |
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1096 OCTAVE_IGNORE_EXCEPTION (const interrupt_exception&) \ |
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1097 OCTAVE_IGNORE_EXCEPTION (const execution_exception&) \ |
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1098 OCTAVE_IGNORE_EXCEPTION (const std::bad_alloc&) \ |
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1099 } \ |
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1100 while (0) |
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1101 |
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1102 void interpreter::cleanup (void) |
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1103 { |
23092
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1104 // If we are attached to a GUI, process pending events and |
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1105 // disconnect the link. |
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1106 |
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1107 octave_link::process_events (true); |
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1108 octave_link::disconnect_link (); |
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1109 |
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1110 OCTAVE_SAFE_CALL (remove_input_event_hook_functions, ()); |
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1111 |
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1112 while (! atexit_functions.empty ()) |
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1113 { |
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1114 std::string fcn = atexit_functions.front (); |
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1115 |
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1116 atexit_functions.pop_front (); |
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1117 |
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1118 OCTAVE_SAFE_CALL (reset_error_handler, ()); |
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1119 |
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1120 OCTAVE_SAFE_CALL (feval, (fcn, octave_value_list (), 0)); |
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1121 |
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1122 OCTAVE_SAFE_CALL (flush_stdout, ()); |
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1123 } |
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1124 |
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1125 // Do this explicitly so that destructors for mex file objects |
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1126 // are called, so that functions registered with mexAtExit are |
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1127 // called. |
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1128 OCTAVE_SAFE_CALL (m_symbol_table.clear_mex_functions, ()); |
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1129 |
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1130 OCTAVE_SAFE_CALL (command_editor::restore_terminal_state, ()); |
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1131 |
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1132 OCTAVE_SAFE_CALL (octave_history_write_timestamp, ()); |
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1133 |
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1134 if (! command_history::ignoring_entries ()) |
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1135 OCTAVE_SAFE_CALL (command_history::clean_up_and_save, ()); |
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1136 |
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1137 OCTAVE_SAFE_CALL (gh_manager::close_all_figures, ()); |
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1138 |
23774
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1139 m_gtk_manager.unload_all_toolkits (); |
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1140 |
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1141 OCTAVE_SAFE_CALL (cleanup_tmp_files, ()); |
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1142 |
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1143 // FIXME: May still need something like this to ensure that |
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1144 // destructors for class objects will run properly. Should that be |
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1145 // done earlier? Before or after atexit functions are executed? |
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1146 m_symbol_table.cleanup (); |
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1147 |
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1148 OCTAVE_SAFE_CALL (sysdep_cleanup, ()); |
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1149 |
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1150 OCTAVE_SAFE_CALL (octave_finalize_hdf5, ()); |
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1151 |
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1152 OCTAVE_SAFE_CALL (flush_stdout, ()); |
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1153 |
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1154 // Don't call singleton_cleanup_list::cleanup until we have the |
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1155 // problems with registering/unregistering types worked out. For |
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1156 // example, uncomment the following line, then use the make_int |
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1157 // function from the examples directory to create an integer |
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1158 // object and then exit Octave. Octave should crash with a |
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1159 // segfault when cleaning up the typinfo singleton. We need some |
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1160 // way to force new octave_value_X types that are created in |
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1161 // .oct files to be unregistered when the .oct file shared library |
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1162 // is unloaded. |
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|
1163 // |
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|
1164 // OCTAVE_SAFE_CALL (singleton_cleanup_list::cleanup, ()); |
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|
1165 } |
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|
1166 |
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|
1167 tree_evaluator& interpreter::get_evaluator (void) |
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1168 { |
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1169 return m_evaluator; |
23532
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1170 } |
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1171 |
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1172 stream_list& interpreter::get_stream_list (void) |
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1173 { |
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1174 return m_stream_list; |
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|
1175 } |
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|
1176 |
23742
1f0daaf81955
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|
1177 url_handle_manager& interpreter::get_url_handle_manager (void) |
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|
1178 { |
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|
1179 return m_url_handle_manager; |
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|
1180 } |
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|
1181 |
23609
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|
1182 symbol_table::scope * |
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|
1183 interpreter::get_current_scope (void) |
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|
1184 { |
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|
1185 return m_symbol_table.current_scope (); |
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|
1186 } |
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|
1187 |
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|
1188 symbol_table::scope * |
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|
1189 interpreter::require_current_scope (const std::string& who) |
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1190 { |
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|
1191 symbol_table::scope *scope = get_current_scope (); |
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1192 |
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|
1193 if (! scope) |
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|
1194 error ("%s: symbol table scope missing", who.c_str ()); |
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|
1195 |
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|
1196 return scope; |
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diff
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|
1197 } |
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diff
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|
1198 |
23553
14723784b9f2
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|
1199 call_stack& interpreter::get_call_stack (void) |
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|
1200 { |
23630
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|
1201 return m_evaluator.get_call_stack (); |
23553
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1202 } |
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|
1203 |
23753
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|
1204 profiler& interpreter::get_profiler (void) |
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1205 { |
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|
1206 return m_evaluator.get_profiler (); |
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1207 } |
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|
1208 |
23703
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1209 void interpreter::mlock (void) |
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1210 { |
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1211 call_stack& cs = get_call_stack (); |
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1212 |
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1213 octave_function *fcn = cs.current (); |
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1214 |
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|
1215 if (! fcn) |
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1216 error ("mlock: invalid use outside a function"); |
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1217 |
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|
1218 fcn->lock (); |
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1219 } |
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1220 |
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1221 void interpreter::munlock (const std::string& nm) |
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1222 { |
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1223 octave_value val = m_symbol_table.find_function (nm); |
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1224 |
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1225 if (val.is_defined ()) |
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1226 { |
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1227 octave_function *fcn = val.function_value (); |
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1228 |
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|
1229 if (fcn) |
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1230 fcn->unlock (); |
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|
1231 } |
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|
1232 } |
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1233 |
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|
1234 bool interpreter::mislocked (const std::string& nm) |
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1235 { |
6eb5f6199a5a
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|
1236 bool retval = false; |
6eb5f6199a5a
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1237 |
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|
1238 octave_value val = m_symbol_table.find_function (nm); |
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|
1239 |
6eb5f6199a5a
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|
1240 if (val.is_defined ()) |
6eb5f6199a5a
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|
1241 { |
6eb5f6199a5a
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|
1242 octave_function *fcn = val.function_value (); |
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|
1243 |
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|
1244 if (fcn) |
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|
1245 retval = fcn->islocked (); |
6eb5f6199a5a
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|
1246 } |
6eb5f6199a5a
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|
1247 |
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1248 return retval; |
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|
1249 } |
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1250 |
23111
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1251 void interpreter::recover_from_exception (void) |
23110
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|
1252 { |
23696
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changeset
|
1253 can_interrupt = true; |
23110
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|
1254 octave_interrupt_immediately = 0; |
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|
1255 octave_interrupt_state = 0; |
af48d8be62b3
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|
1256 octave_signal_caught = 0; |
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|
1257 octave_exception_state = octave_no_exception; |
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|
1258 octave_restore_signal_mask (); |
23696
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changeset
|
1259 catch_interrupts (); |
23110
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|
1260 } |
22094
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changeset
|
1261 |
23110
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|
1262 // Functions to call when the interpreter exits. |
22094
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changeset
|
1263 |
23111
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|
1264 std::list<std::string> interpreter::atexit_functions; |
22094
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|
1265 |
23110
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|
1266 void interpreter::add_atexit_function (const std::string& fname) |
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|
1267 { |
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|
1268 atexit_functions.push_front (fname); |
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|
1269 } |
22094
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|
1270 |
23110
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|
1271 bool interpreter::remove_atexit_function (const std::string& fname) |
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|
1272 { |
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|
1273 bool found = false; |
22094
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changeset
|
1274 |
23110
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|
1275 for (auto it = atexit_functions.begin (); |
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|
1276 it != atexit_functions.end (); it++) |
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|
1277 { |
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|
1278 if (*it == fname) |
af48d8be62b3
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1279 { |
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1280 atexit_functions.erase (it); |
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1281 found = true; |
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1282 break; |
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1283 } |
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1284 } |
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1285 |
23110
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1286 return found; |
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1287 } |
23723
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1288 |
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1289 // What internal options get configured by --traditional. |
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1290 |
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1291 void interpreter::maximum_braindamage (void) |
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1292 { |
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1293 FPS1 (octave_value (">> ")); |
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1294 FPS2 (octave_value ("")); |
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1295 |
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1296 m_evaluator.PS4 (""); |
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1297 |
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1298 Fbeep_on_error (octave_value (true)); |
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1299 Fconfirm_recursive_rmdir (octave_value (false)); |
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1300 Fcrash_dumps_octave_core (octave_value (false)); |
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1301 Fdisable_diagonal_matrix (octave_value (true)); |
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1302 Fdisable_permutation_matrix (octave_value (true)); |
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1303 Fdisable_range (octave_value (true)); |
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1304 Ffixed_point_format (octave_value (true)); |
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1305 Fhistory_timestamp_format_string (octave_value ("%%-- %D %I:%M %p --%%")); |
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1306 Fpage_screen_output (octave_value (false)); |
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1307 Fprint_empty_dimensions (octave_value (false)); |
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1308 Fsave_default_options (octave_value ("-mat-binary")); |
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1309 Fstruct_levels_to_print (octave_value (0)); |
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1310 |
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1311 disable_warning ("Octave:abbreviated-property-match"); |
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1312 disable_warning ("Octave:data-file-in-path"); |
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1313 disable_warning ("Octave:function-name-clash"); |
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1314 disable_warning ("Octave:possible-matlab-short-circuit-operator"); |
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1315 } |
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1316 } |