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annotate src/pt-cmd.cc @ 7754:e26d0931c044

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pt-cmd.cc (tree_function_def::eval): only install command-line functions if executing in top-level scope
author John W. Eaton <jwe@octave.org>
date Sun, 04 May 2008 21:45:47 -0400
parents 5b4d278ec828
children ea9cb4d68dbf
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1 /*
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2
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3 Copyright (C) 1994, 1995, 1996, 1997, 2002, 2004, 2005, 2006, 2007
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4 John W. Eaton
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5
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6 This file is part of Octave.
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7
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8 Octave is free software; you can redistribute it and/or modify it
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9 under the terms of the GNU General Public License as published by the
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10 Free Software Foundation; either version 3 of the License, or (at your
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11 option) any later version.
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12
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13 Octave is distributed in the hope that it will be useful, but WITHOUT
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14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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16 for more details.
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17
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18 You should have received a copy of the GNU General Public License
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19 along with Octave; see the file COPYING. If not, see
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20 <http://www.gnu.org/licenses/>.
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22 */
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23
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24 #ifdef HAVE_CONFIG_H
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25 #include <config.h>
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26 #endif
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28 #include "pt-cmd.h"
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29 #include "pt-walk.h"
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30
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31 // No-op.
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32
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33 tree_command *
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34 tree_no_op_command::dup (symbol_table::scope_id)
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35 {
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36 return new tree_no_op_command (orig_cmd, line (), column ());
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37 }
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38
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39 void
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40 tree_no_op_command::accept (tree_walker& tw)
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41 {
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42 tw.visit_no_op_command (*this);
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43 }
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44
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45 // Function definition.
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46
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47 void
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48 tree_function_def::eval (void)
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49 {
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50 if (symbol_table::at_top_level ())
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51 {
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52 octave_function *f = function ();
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53
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54 if (f)
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55 {
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56 std::string nm = f->name ();
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57
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58 symbol_table::install_cmdline_function (nm, fcn);
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60 // Make sure that any variable with the same name as the new
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61 // function is cleared.
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63 symbol_table::varref (nm) = octave_value ();
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64 }
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65 }
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66 }
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67
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68 tree_command *
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69 tree_function_def::dup (symbol_table::scope_id)
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70 {
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71 return new tree_function_def (fcn, line (), column ());
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72 }
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73
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74 void
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75 tree_function_def::accept (tree_walker& tw)
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76 {
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77 tw.visit_function_def (*this);
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78 }
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79
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80 /*
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81 ;;; Local Variables: ***
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82 ;;; mode: C++ ***
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83 ;;; End: ***
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84 */