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1 /* |
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2 |
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3 Copyright (C) 2003 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 (octave_fcn_handle_h) |
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24 #define octave_fcn_handle_h 1 |
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25 |
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26 #if defined (__GNUG__) && defined (USE_PRAGMA_INTERFACE_IMPLEMENTATION) |
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27 #pragma interface |
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28 #endif |
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29 |
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30 #include <iostream> |
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31 #include <string> |
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32 |
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33 #include "oct-alloc.h" |
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34 |
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35 #include "ov-base.h" |
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36 #include "ov-fcn.h" |
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37 #include "symtab.h" |
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38 |
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39 // Function handles. |
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40 |
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41 class |
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42 octave_fcn_handle : public octave_base_value |
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43 { |
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44 public: |
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45 |
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46 octave_fcn_handle (void) : fcn (0), nm ("[]") { } |
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47 |
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48 octave_fcn_handle (octave_function *f, const std::string& n) |
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49 : fcn (f), nm (std::string ("@") + n) { } |
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50 |
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51 octave_fcn_handle (const octave_fcn_handle& fh) |
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52 : fcn (fh.fcn), nm (fh.nm) { } |
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53 |
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54 octave_fcn_handle& operator = (const octave_fcn_handle& fh) |
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55 { |
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56 if (this != &fh) |
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57 { |
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58 fcn = fh.fcn; |
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59 nm = fh.nm; |
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60 } |
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61 |
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62 return *this; |
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63 } |
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64 |
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65 ~octave_fcn_handle (void) { } |
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66 |
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67 bool is_defined (void) const { return fcn; } |
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68 |
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69 octave_function *function_value (bool) { return fcn; } |
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70 |
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71 octave_fcn_handle *fcn_handle_value (bool) { return this; } |
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72 |
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73 bool print_as_scalar (void) const { return true; } |
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74 |
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75 void print (std::ostream& os, bool pr_as_read_syntax = false) const; |
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76 |
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77 void print_raw (std::ostream& os, bool pr_as_read_syntax = false) const; |
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78 |
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79 std::string name (void) const { return nm; } |
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80 |
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81 private: |
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82 |
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83 // The function we are handling. |
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84 octave_function *fcn; |
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85 |
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86 // The name of the handle, including the "@". |
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87 std::string nm; |
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88 |
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89 DECLARE_OCTAVE_ALLOCATOR |
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90 |
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91 DECLARE_OV_TYPEID_FUNCTIONS_AND_DATA |
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92 }; |
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93 |
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94 extern octave_value make_fcn_handle (const std::string& nm); |
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95 |
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96 #endif |
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97 |
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98 /* |
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99 ;;; Local Variables: *** |
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100 ;;; mode: C++ *** |
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101 ;;; End: *** |
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102 */ |
