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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__) && defined (USE_PRAGMA_INTERFACE_IMPLEMENTATION) |
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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 <iostream> |
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32 |
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33 #include "error.h" |
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34 #include "oct-obj.h" |
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35 #include "pager.h" |
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36 #include "pt-const.h" |
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37 #include "pt-walk.h" |
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38 |
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39 // We are likely to have a lot of tree_constant objects to allocate, |
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40 // so make the grow_size large. |
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41 octave_allocator |
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42 tree_constant::allocator (sizeof (tree_constant), 1024); |
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43 |
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44 void |
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45 tree_constant::print (std::ostream& os, bool pr_as_read_syntax, bool pr_orig_text) |
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46 { |
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47 if (pr_orig_text && ! orig_text.empty ()) |
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48 os << orig_text; |
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49 else |
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50 val.print (os, pr_as_read_syntax); |
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51 } |
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52 |
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53 void |
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54 tree_constant::print_raw (std::ostream& os, bool pr_as_read_syntax, |
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55 bool pr_orig_text) |
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56 { |
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57 if (pr_orig_text && ! orig_text.empty ()) |
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58 os << orig_text; |
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59 else |
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60 val.print_raw (os, pr_as_read_syntax); |
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61 } |
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62 |
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63 octave_value_list |
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64 tree_constant::rvalue (int nargout) |
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65 { |
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66 octave_value_list retval; |
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67 |
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68 if (nargout > 1) |
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69 error ("invalid number of output arguments for constant expression"); |
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70 else |
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71 retval = rvalue (); |
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72 |
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73 return retval; |
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74 } |
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75 |
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76 void |
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77 tree_constant::accept (tree_walker& tw) |
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78 { |
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79 tw.visit_constant (*this); |
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80 } |
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81 |
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82 /* |
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83 ;;; Local Variables: *** |
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84 ;;; mode: C++ *** |
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85 ;;; End: *** |
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86 */ |
