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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, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
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20 02110-1301, USA. |
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21 |
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22 */ |
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23 |
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24 #if !defined (octave_magic_colon_h) |
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25 #define octave_magic_colon_h 1 |
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26 |
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27 #include <cstdlib> |
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28 |
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29 #include <iostream> |
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30 #include <string> |
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31 |
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32 #include "mx-base.h" |
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33 #include "str-vec.h" |
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34 |
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35 #include "error.h" |
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36 #include "ov-base.h" |
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37 #include "ov-typeinfo.h" |
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38 |
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39 class Octave_map; |
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40 class octave_value_list; |
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41 |
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42 class tree_walker; |
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43 |
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44 // A type to represent `:' as used for indexing. |
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45 |
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46 class |
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47 octave_magic_colon : public octave_base_value |
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48 { |
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49 public: |
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50 |
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51 octave_magic_colon (void) |
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52 : octave_base_value () { } |
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53 |
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54 octave_magic_colon (const octave_magic_colon&) |
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55 : octave_base_value () { } |
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56 |
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57 ~octave_magic_colon (void) { } |
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58 |
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59 octave_value *clone (void) const { return new octave_magic_colon (*this); } |
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60 octave_value *empty_clone (void) const { return new octave_magic_colon (); } |
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61 |
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62 idx_vector index_vector (void) const { return idx_vector (':'); } |
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63 |
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64 bool is_defined (void) const { return true; } |
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65 |
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66 bool is_constant (void) const { return true; } |
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67 |
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68 bool is_magic_colon (void) const { return true; } |
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69 |
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70 bool valid_as_scalar_index (void) const { return true; } |
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71 |
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72 bool valid_as_zero_index (void) const { return false; } |
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73 |
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74 void print (std::ostream& os, bool pr_as_read_syntax = false) const; |
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75 |
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76 void print_raw (std::ostream& os, bool pr_as_read_syntax = false) const; |
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77 |
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78 private: |
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79 |
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80 DECLARE_OV_TYPEID_FUNCTIONS_AND_DATA |
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81 }; |
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82 |
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83 #endif |
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84 |
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85 /* |
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86 ;;; Local Variables: *** |
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87 ;;; mode: C++ *** |
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88 ;;; End: *** |
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89 */ |
