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1 /* |
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2 |
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3 Copyright (C) 1996, 1997 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 the |
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9 Free Software Foundation; either version 2, or (at your option) any |
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10 later version. |
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11 |
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12 Octave is distributed in the hope that it will be useful, but WITHOUT |
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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15 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, write to the Free |
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19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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20 |
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21 */ |
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22 |
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23 #if defined (__GNUG__) |
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24 #pragma implementation |
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25 #endif |
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26 |
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27 #ifdef HAVE_CONFIG_H |
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28 #include <config.h> |
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29 #endif |
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30 |
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31 #include "error.h" |
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32 #include "pt-jump.h" |
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33 #include "pt-walk.h" |
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34 |
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35 // Break. |
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36 |
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37 // Nonzero means we're breaking out of a loop or function body. |
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38 int tree_break_command::breaking = 0; |
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39 |
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40 void |
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41 tree_break_command::eval (void) |
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42 { |
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43 if (! error_state) |
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44 breaking = 1; |
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45 } |
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46 |
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47 void |
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48 tree_break_command::accept (tree_walker& tw) |
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49 { |
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50 tw.visit_break_command (*this); |
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51 } |
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52 |
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53 // Continue. |
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54 |
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55 // Nonzero means we're jumping to the end of a loop. |
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56 int tree_continue_command::continuing = 0; |
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57 |
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58 void |
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59 tree_continue_command::eval (void) |
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60 { |
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61 if (! error_state) |
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62 continuing = 1; |
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63 } |
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64 |
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65 void |
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66 tree_continue_command::accept (tree_walker& tw) |
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67 { |
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68 tw.visit_continue_command (*this); |
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69 } |
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70 |
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71 // Return. |
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72 |
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73 // Nonzero means we're returning from a function. Global because it |
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74 // is also needed in tree-expr.cc. |
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75 int tree_return_command::returning = 0; |
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76 |
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77 void |
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78 tree_return_command::eval (void) |
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79 { |
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80 if (! error_state) |
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81 returning = 1; |
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82 } |
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83 |
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84 void |
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85 tree_return_command::accept (tree_walker& tw) |
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86 { |
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87 tw.visit_return_command (*this); |
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88 } |
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89 |
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90 /* |
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91 ;;; Local Variables: *** |
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92 ;;; mode: C++ *** |
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93 ;;; End: *** |
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94 */ |
