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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_mapper_h) |
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25 #define octave_mapper_h 1 |
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26 |
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27 #include <string> |
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28 |
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29 #include "oct-obj.h" |
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30 #include "ov-fcn.h" |
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31 #include "ov-typeinfo.h" |
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32 |
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33 class octave_value; |
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34 class octave_value_list; |
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35 |
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36 // Builtin mapper functions. |
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37 |
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38 class |
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39 octave_mapper : public octave_function |
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40 { |
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41 public: |
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42 |
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43 octave_mapper (void) { } |
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44 |
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45 typedef int (*ch_mapper) (int); |
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46 typedef bool (*d_b_mapper) (double); |
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47 typedef bool (*c_b_mapper) (const Complex&); |
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48 typedef double (*d_d_mapper) (double); |
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49 typedef double (*d_c_mapper) (const Complex&); |
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50 typedef Complex (*c_c_mapper) (const Complex&); |
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51 |
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52 octave_mapper (ch_mapper ch, d_b_mapper db, c_b_mapper cb, |
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53 d_d_mapper dd, d_c_mapper dc, |
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54 c_c_mapper cc, double ll, double ul, |
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55 int cmf, bool crcfr, |
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56 const std::string& nm = std::string (), |
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57 const std::string& ds = std::string ()) |
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58 : octave_function (nm, ds), ch_map_fcn (ch), |
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59 d_b_map_fcn (db), c_b_map_fcn (cb), |
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60 d_d_map_fcn (dd), d_c_map_fcn (dc), c_c_map_fcn (cc), |
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61 lower_limit (ll), upper_limit (ul), ch_map_flag (cmf), |
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62 can_ret_cmplx_for_real (crcfr) { } |
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63 |
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64 ~octave_mapper (void) { } |
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65 |
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66 octave_function *function_value (bool = false) { return this; } |
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67 |
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68 octave_value subsref (const std::string&, |
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69 const std::list<octave_value_list>&) |
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70 { |
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71 panic_impossible (); |
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72 return octave_value (); |
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73 } |
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74 |
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75 octave_value_list subsref (const std::string& type, |
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76 const std::list<octave_value_list>& idx, |
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77 int nargout); |
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78 |
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79 octave_value_list |
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80 do_multi_index_op (int nargout, const octave_value_list& args); |
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81 |
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82 private: |
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83 |
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84 octave_value apply (const octave_value& arg) const; |
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85 |
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86 // ch_map_fcn is a kluge. |
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87 |
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88 ch_mapper ch_map_fcn; |
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89 d_b_mapper d_b_map_fcn; |
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90 c_b_mapper c_b_map_fcn; |
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91 d_d_mapper d_d_map_fcn; |
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92 d_c_mapper d_c_map_fcn; |
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93 c_c_mapper c_c_map_fcn; |
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94 |
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95 // If flag is nonzero and we are not calling ch_map_fcn, lower_limit |
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96 // and upper_limit specify the range of values for which a real arg |
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97 // returns a real value. Outside that range, we have to convert args |
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98 // to complex, and call the complex valued function. |
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99 |
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100 double lower_limit; |
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101 double upper_limit; |
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102 |
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103 // ch_map_flag has the following meanings: |
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104 // |
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105 // 0 => this function returns a matrix of ones and zeros |
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106 // 1 => this function returns a numeric matrix (any values) |
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107 // 2 => this function returns a std::string array |
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108 |
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109 int ch_map_flag; |
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110 |
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111 // can_ret_cmplx_for_real is a flag that says whether this function |
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112 // can create a complex number given a real-valued argument |
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113 // (e.g., sqrt (-1)). |
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114 |
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115 bool can_ret_cmplx_for_real; |
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116 |
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117 // No copying! |
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118 |
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119 octave_mapper (const octave_mapper& om); |
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120 |
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121 octave_mapper& operator = (const octave_mapper& om); |
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122 |
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123 DECLARE_OCTAVE_ALLOCATOR |
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124 |
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125 DECLARE_OV_TYPEID_FUNCTIONS_AND_DATA |
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126 }; |
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127 |
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128 #endif |
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129 |
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130 /* |
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131 ;;; Local Variables: *** |
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132 ;;; mode: C++ *** |
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133 ;;; End: *** |
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134 */ |
