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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_base_scalar_h) |
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25 #define octave_base_scalar_h 1 |
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26 |
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27 #include <cstdlib> |
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28 |
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29 #include <iostream> |
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30 #include <string> |
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31 |
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32 #include "lo-mappers.h" |
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33 #include "lo-utils.h" |
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34 #include "oct-alloc.h" |
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35 #include "str-vec.h" |
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36 #include "MatrixType.h" |
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37 |
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38 #include "ov-base.h" |
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39 #include "ov-typeinfo.h" |
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40 |
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41 // Real scalar values. |
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42 |
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43 template <class ST> |
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44 class |
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45 octave_base_scalar : public octave_base_value |
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46 { |
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47 public: |
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48 |
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49 octave_base_scalar (void) |
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50 : octave_base_value (), typ (MatrixType ()) { } |
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51 |
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52 octave_base_scalar (const ST& s, const MatrixType& t = MatrixType ()) |
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53 : octave_base_value (), scalar (s), typ (t) { } |
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54 |
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55 octave_base_scalar (const octave_base_scalar& s) |
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56 : octave_base_value (), scalar (s.scalar), typ (s.typ) { } |
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57 |
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58 ~octave_base_scalar (void) { } |
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59 |
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60 octave_base_value *clone (void) const { return new octave_base_scalar (*this); } |
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61 octave_base_value *empty_clone (void) const { return new octave_base_scalar (); } |
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62 |
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63 octave_value squeeze (void) const { return scalar; } |
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64 |
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65 octave_value subsref (const std::string& type, |
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66 const std::list<octave_value_list>& idx); |
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67 |
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68 octave_value_list subsref (const std::string&, |
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69 const std::list<octave_value_list>&, int) |
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70 { |
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71 panic_impossible (); |
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72 return octave_value_list (); |
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73 } |
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74 |
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75 octave_value subsasgn (const std::string& type, |
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76 const std::list<octave_value_list>& idx, |
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77 const octave_value& rhs); |
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78 |
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79 bool is_constant (void) const { return true; } |
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80 |
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81 bool is_defined (void) const { return true; } |
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82 |
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83 dim_vector dims (void) const { static dim_vector dv (1, 1); return dv; } |
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84 |
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85 octave_idx_type nnz (void) const { return (scalar != ST ()) ? 1 : 0; } |
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86 |
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87 octave_value permute (const Array<int>&, bool = false) const |
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88 { return scalar; } |
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89 |
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90 size_t byte_size (void) const { return sizeof (ST); } |
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91 |
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92 octave_value all (int = 0) const { return (scalar != ST ()); } |
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93 |
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94 octave_value any (int = 0) const { return (scalar != ST ()); } |
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95 |
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96 MatrixType matrix_type (void) const { return typ; } |
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97 MatrixType matrix_type (const MatrixType& _typ) const |
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98 { MatrixType ret = typ; typ = _typ; return ret; } |
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99 |
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100 bool is_scalar_type (void) const { return true; } |
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101 |
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102 bool is_numeric_type (void) const { return true; } |
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103 |
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104 bool is_true (void) const { return (scalar != ST ()); } |
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105 |
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106 void print (std::ostream& os, bool pr_as_read_syntax = false) const; |
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107 |
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108 void print_raw (std::ostream& os, bool pr_as_read_syntax = false) const; |
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109 |
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110 bool print_name_tag (std::ostream& os, const std::string& name) const; |
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111 |
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112 // Unsafe. This function exists to support the MEX interface. |
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113 // You should not use it anywhere else. |
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114 void *mex_get_data (void) const { return const_cast<ST *> (&scalar); } |
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115 |
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116 protected: |
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117 |
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118 // The value of this scalar. |
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119 ST scalar; |
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120 |
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121 mutable MatrixType typ; |
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122 }; |
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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 */ |
