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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-base-mat.h" |
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37 #include "ov-fcn.h" |
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38 #include "ov-typeinfo.h" |
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39 #include "symtab.h" |
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40 |
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41 // Function handles. |
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42 |
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43 class |
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44 octave_fcn_handle : public octave_base_value |
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45 { |
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46 public: |
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47 enum fcn_type { fcn_handle = 1, fcn_inline = 2 }; |
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48 |
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49 octave_fcn_handle (void) |
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50 : typ (fcn_handle), fcn (), nm (), iftext (), ifargs () { } |
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51 |
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52 octave_fcn_handle (const octave_value& f, const std::string& n) |
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53 : typ (fcn_handle), fcn (f), nm (n), iftext (), ifargs () { } |
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54 |
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55 octave_fcn_handle (const std::string& f, const string_vector& a, |
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56 const std::string& n = std::string ()); |
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57 |
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58 ~octave_fcn_handle (void) { } |
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59 |
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60 octave_value subsref (const std::string&, |
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61 const std::list<octave_value_list>&) |
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62 { |
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63 panic_impossible (); |
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64 return octave_value (); |
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65 } |
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66 |
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67 octave_value_list subsref (const std::string& type, |
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68 const std::list<octave_value_list>& idx, |
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69 int nargout); |
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70 |
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71 bool is_defined (void) const { return true; } |
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72 |
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73 bool is_function_handle (void) const { return true; } |
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74 |
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75 octave_function *function_value (bool = false) |
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76 { return fcn.function_value (); } |
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77 |
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78 std::string inline_fcn_name (void) const { return nm; } |
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79 |
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80 std::string inline_fcn_text (void) const { return iftext; } |
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81 |
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82 string_vector inline_fcn_arg_names (void) const { return ifargs; } |
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83 |
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84 bool is_inline (void) const { return (typ == fcn_inline); } |
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85 |
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86 octave_fcn_handle *fcn_handle_value (bool = false) { return this; } |
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87 |
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88 octave_value convert_to_str_internal (bool, bool) const; |
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89 |
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90 void print (std::ostream& os, bool pr_as_read_syntax = false) const; |
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91 |
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92 void print_raw (std::ostream& os, bool pr_as_read_syntax = false) const; |
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93 |
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94 private: |
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95 |
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96 // No copying! |
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97 |
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98 octave_fcn_handle (const octave_fcn_handle& fh); |
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99 |
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100 octave_fcn_handle& operator = (const octave_fcn_handle& fh); |
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101 |
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102 DECLARE_OCTAVE_ALLOCATOR |
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103 |
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104 DECLARE_OV_TYPEID_FUNCTIONS_AND_DATA |
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105 |
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106 // The type of function handle |
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107 fcn_type typ; |
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108 |
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109 // The function we are handling. |
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110 octave_value fcn; |
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111 |
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112 // The name of the handle, including the "@". |
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113 std::string nm; |
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114 |
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115 // The expression of an inline function |
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116 std::string iftext; |
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117 |
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118 // The args of an inline function |
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119 string_vector ifargs; |
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120 }; |
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121 |
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122 extern octave_value make_fcn_handle (const std::string& nm); |
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123 |
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124 #endif |
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125 |
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126 /* |
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127 ;;; Local Variables: *** |
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128 ;;; mode: C++ *** |
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129 ;;; End: *** |
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130 */ |
