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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 (octave_mapper_h) |
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24 #define octave_mapper_h 1 |
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25 |
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26 #if defined (__GNUG__) |
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27 #pragma interface |
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28 #endif |
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29 |
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30 #include <string> |
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31 |
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32 #include "ov-fcn.h" |
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33 #include "ov-typeinfo.h" |
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34 |
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35 class octave_value; |
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36 class octave_value_list; |
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37 |
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38 // Builtin mapper functions. |
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39 |
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40 class |
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41 octave_mapper : public octave_function |
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42 { |
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43 public: |
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44 |
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45 typedef int (*ch_mapper) (int); |
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46 typedef double (*d_d_mapper) (double); |
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47 typedef double (*d_c_mapper) (const Complex&); |
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48 typedef Complex (*c_c_mapper) (const Complex&); |
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49 |
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50 octave_mapper (ch_mapper ch, d_d_mapper dd, d_c_mapper dc, |
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51 c_c_mapper cc, double ll, double ul, int f, |
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52 const string& nm = string (), |
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53 const string& ds = string ()) |
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54 : octave_function (nm, ds), ch_map_fcn (ch), d_d_map_fcn (dd), |
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55 d_c_map_fcn (dc), c_c_map_fcn (cc), |
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56 lower_limit (ll), upper_limit (ul), flag (f) { } |
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57 |
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58 ~octave_mapper (void) { } |
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59 |
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60 void *operator new (size_t size) |
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61 { return allocator.alloc (size); } |
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62 |
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63 void operator delete (void *p, size_t size) |
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64 { allocator.free (p, size); } |
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65 |
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66 octave_function *function_value (bool) { return this; } |
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67 |
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68 octave_value_list do_index_op (int nargout, const octave_value_list& args); |
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69 |
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70 int type_id (void) const { return t_id; } |
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71 |
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72 string type_name (void) const { return t_name; } |
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73 |
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74 static int static_type_id (void) { return t_id; } |
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75 |
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76 static void register_type (void) |
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77 { t_id = octave_value_typeinfo::register_type (t_name); } |
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78 |
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79 private: |
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80 |
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81 octave_mapper (void); |
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82 |
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83 octave_mapper (const octave_mapper& m); |
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84 |
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85 octave_value apply (const octave_value& arg) const; |
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86 |
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87 // ch_map_fcn is a kluge. |
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88 |
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89 ch_mapper ch_map_fcn; |
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90 d_d_mapper d_d_map_fcn; |
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91 d_c_mapper d_c_map_fcn; |
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92 c_c_mapper c_c_map_fcn; |
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93 |
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94 // If flag is nonzero and we are not calling ch_map_fcn, lower_limit |
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95 // and upper_limit specify the range of values for which a real arg |
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96 // returns a real value. Outside that range, we have to convert args |
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97 // to complex, and call the complex valued function. |
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98 |
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99 double lower_limit; |
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100 double upper_limit; |
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101 |
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102 // For ch_map_fcn, flag has the following meanings: |
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103 // |
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104 // 0 => this function returns a matrix of ones and zeros |
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105 // 1 => this function returns a numeric matrix (any values) |
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106 // 2 => this function returns a string array |
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107 // |
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108 // For other mappers, nonzero means that this function can return a |
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109 // complex value for some real arguments. |
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110 |
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111 int flag; |
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112 |
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113 // For custom memory management. |
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114 static octave_allocator allocator; |
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115 |
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116 // Type id of list objects, set by register_type(). |
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117 static int t_id; |
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118 |
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119 // Type name of list objects, defined in ov-list.cc. |
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120 static const string t_name; |
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121 }; |
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122 |
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123 #endif |
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124 |
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125 /* |
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126 ;;; Local Variables: *** |
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127 ;;; mode: C++ *** |
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128 ;;; End: *** |
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129 */ |
