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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, 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_fcn_handle_h) |
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25 #define octave_fcn_handle_h 1 |
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26 |
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27 #include <iostream> |
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28 #include <string> |
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29 |
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30 #include "oct-alloc.h" |
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31 |
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32 #include "ov-base.h" |
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33 #include "ov-base-mat.h" |
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34 #include "ov-fcn.h" |
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35 #include "ov-typeinfo.h" |
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36 |
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37 // Function handles. |
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38 |
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39 class |
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40 octave_fcn_handle : public octave_base_value |
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41 { |
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42 public: |
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43 octave_fcn_handle (void) |
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44 : warn_reload (true), fcn (), nm () { } |
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45 |
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46 octave_fcn_handle (const std::string& n) |
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47 : warn_reload (true), fcn (), nm (n) { } |
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48 |
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49 octave_fcn_handle (const octave_value& f, const std::string& n) |
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50 : warn_reload (true), fcn (f), nm (n) { } |
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51 |
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52 octave_fcn_handle (const octave_fcn_handle& fh) |
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53 : octave_base_value (fh), warn_reload (fh.warn_reload), |
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54 fcn (fh.fcn), nm (fh.nm) { } |
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55 |
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56 ~octave_fcn_handle (void) { } |
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57 |
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58 octave_base_value *clone (void) const { return new octave_fcn_handle (*this); } |
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59 octave_base_value *empty_clone (void) const { return new octave_fcn_handle (); } |
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60 |
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61 octave_value subsref (const std::string&, |
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62 const std::list<octave_value_list>&) |
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63 { |
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64 panic_impossible (); |
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65 return octave_value (); |
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66 } |
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67 |
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68 octave_value_list subsref (const std::string& type, |
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69 const std::list<octave_value_list>& idx, |
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70 int nargout); |
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71 |
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72 bool is_defined (void) const { return true; } |
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73 |
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74 bool is_function_handle (void) const { return true; } |
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75 |
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76 dim_vector dims (void) const { static dim_vector dv (1, 1); return dv; } |
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77 |
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78 octave_function *function_value (bool = false) |
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79 { return fcn.function_value (); } |
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80 |
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81 octave_user_function *user_function_value (bool = false) |
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82 { return fcn.user_function_value (); } |
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83 |
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84 octave_fcn_handle *fcn_handle_value (bool = false) { return this; } |
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85 |
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86 octave_value fcn_val (void) const { return fcn; } |
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87 |
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88 std::string fcn_name (void) const { return nm; } |
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89 |
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90 bool save_ascii (std::ostream& os); |
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91 |
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92 bool load_ascii (std::istream& is); |
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93 |
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94 bool save_binary (std::ostream& os, bool& save_as_floats); |
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95 |
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96 bool load_binary (std::istream& is, bool swap, |
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97 oct_mach_info::float_format fmt); |
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98 |
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99 #if defined (HAVE_HDF5) |
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100 bool save_hdf5 (hid_t loc_id, const char *name, bool save_as_floats); |
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101 |
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102 bool load_hdf5 (hid_t loc_id, const char *name, bool have_h5giterate_bug); |
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103 #endif |
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104 |
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105 void print (std::ostream& os, bool pr_as_read_syntax = false) const; |
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106 |
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107 void print_raw (std::ostream& os, bool pr_as_read_syntax = false) const; |
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108 |
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109 private: |
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110 |
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111 bool set_fcn (const std::string &octaveroot, const std::string& fpath); |
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112 |
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113 DECLARE_OCTAVE_ALLOCATOR |
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114 |
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115 DECLARE_OV_TYPEID_FUNCTIONS_AND_DATA |
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116 |
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117 // If TRUE, print a warning if the pointed-to fucntion is out of |
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118 // date. This variable may be removed when updating is properly |
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119 // implemented. |
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120 mutable bool warn_reload; |
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121 |
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122 void reload_warning (const std::string& fcn_type) const; |
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123 |
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124 protected: |
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125 |
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126 // The function we are handling. |
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127 octave_value fcn; |
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128 |
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129 // The name of the handle, including the "@". |
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130 std::string nm; |
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131 }; |
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132 |
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133 extern octave_value make_fcn_handle (const std::string& nm); |
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134 |
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135 #endif |
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136 |
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137 /* |
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138 ;;; Local Variables: *** |
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139 ;;; mode: C++ *** |
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140 ;;; End: *** |
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141 */ |
