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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 3 of the License, or (at your |
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10 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 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, 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 #ifdef 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 "error.h" |
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28 #include "oct-obj.h" |
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29 #include "pt-bp.h" |
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30 #include "pt-jump.h" |
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31 #include "pt-walk.h" |
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32 |
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33 class octave_value_list; |
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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 // Even if we have an error we should still enter debug mode. |
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44 MAYBE_DO_BREAKPOINT; |
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45 |
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46 if (! error_state) |
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47 breaking = 1; |
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48 } |
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49 |
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50 tree_command * |
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51 tree_break_command::dup (symbol_table *) |
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52 { |
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53 return new tree_break_command (line (), column ()); |
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54 } |
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55 |
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56 void |
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57 tree_break_command::accept (tree_walker& tw) |
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58 { |
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59 tw.visit_break_command (*this); |
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60 } |
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61 |
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62 // Continue. |
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63 |
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64 // Nonzero means we're jumping to the end of a loop. |
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65 int tree_continue_command::continuing = 0; |
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66 |
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67 void |
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68 tree_continue_command::eval (void) |
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69 { |
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70 MAYBE_DO_BREAKPOINT; |
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71 |
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72 if (! error_state) |
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73 continuing = 1; |
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74 } |
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75 |
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76 tree_command * |
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77 tree_continue_command::dup (symbol_table *) |
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78 { |
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79 return new tree_continue_command (line (), column ()); |
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80 } |
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81 |
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82 void |
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83 tree_continue_command::accept (tree_walker& tw) |
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84 { |
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85 tw.visit_continue_command (*this); |
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86 } |
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87 |
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88 // Return. |
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89 |
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90 // Nonzero means we're returning from a function. |
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91 int tree_return_command::returning = 0; |
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92 |
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93 void |
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94 tree_return_command::eval (void) |
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95 { |
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96 MAYBE_DO_BREAKPOINT; |
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97 |
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98 if (! error_state) |
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99 returning = 1; |
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100 } |
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101 |
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102 tree_command * |
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103 tree_return_command::dup (symbol_table *) |
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104 { |
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105 return new tree_return_command (line (), column ()); |
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106 } |
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107 |
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108 void |
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109 tree_return_command::accept (tree_walker& tw) |
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110 { |
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111 tw.visit_return_command (*this); |
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112 } |
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113 |
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114 /* |
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115 ;;; Local Variables: *** |
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116 ;;; mode: C++ *** |
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117 ;;; End: *** |
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118 */ |
