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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_range_h) |
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24 #define octave_range_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 <cstdlib> |
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31 |
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32 #include <string> |
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33 |
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34 class ostream; |
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35 |
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36 #include "Range.h" |
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37 |
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38 #include "lo-utils.h" |
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39 #include "mx-base.h" |
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40 #include "oct-alloc.h" |
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41 #include "str-vec.h" |
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42 |
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43 #include "error.h" |
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44 #include "mappers.h" |
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45 #include "ov-base.h" |
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46 #include "ov-typeinfo.h" |
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47 |
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48 class Octave_map; |
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49 class octave_value_list; |
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50 |
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51 class tree_walker; |
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52 |
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53 // Range values. |
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54 |
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55 class |
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56 octave_range : public octave_base_value |
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57 { |
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58 public: |
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59 |
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60 octave_range (void) |
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61 : octave_base_value () { } |
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62 |
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63 octave_range (double base, double limit, double inc) |
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64 : octave_base_value (), range (base, limit, inc) |
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65 { |
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66 if (range.nelem () < 0) |
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67 ::error ("invalid range"); |
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68 } |
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69 |
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70 octave_range (const Range& r) |
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71 : octave_base_value (), range (r) |
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72 { |
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73 if (range.nelem () < 0) |
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74 ::error ("invalid range"); |
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75 } |
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76 |
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77 octave_range (const octave_range& r) |
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78 : octave_base_value (), range (r.range) { } |
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79 |
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80 ~octave_range (void) { } |
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81 |
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82 octave_value *clone (void) { return new octave_range (*this); } |
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83 |
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84 void *operator new (size_t size) |
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85 { return allocator.alloc (size); } |
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86 |
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87 void operator delete (void *p, size_t size) |
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88 { allocator.free (p, size); } |
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89 |
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90 type_conv_fcn numeric_conversion_function (void) const; |
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91 |
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92 octave_value *try_narrowing_conversion (void); |
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93 |
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94 octave_value index (const octave_value_list& idx) const; |
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95 |
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96 idx_vector index_vector (void) const { return idx_vector (range); } |
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97 |
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98 int rows (void) const { return (columns () > 0); } |
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99 int columns (void) const { return range.nelem (); } |
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100 |
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101 bool is_defined (void) const { return true; } |
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102 |
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103 bool is_range (void) const { return true; } |
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104 |
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105 // XXX DO ME XXX |
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106 octave_value all (void) const; |
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107 octave_value any (void) const; |
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108 |
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109 bool is_real_type (void) const { return true; } |
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110 |
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111 bool valid_as_scalar_index (void) const |
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112 { |
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113 return (range.nelem () == 1 |
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114 && ! xisnan (range.base ()) |
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115 && NINT (range.base ()) == 1); |
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116 } |
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117 |
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118 bool valid_as_zero_index (void) const |
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119 { |
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120 return (range.nelem () == 1 |
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121 && ! xisnan (range.base ()) |
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122 && NINT (range.base ()) == 0); |
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123 } |
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124 |
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125 // XXX DO ME XXX |
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126 bool is_true (void) const; |
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127 |
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128 double double_value (bool) const; |
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129 |
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130 Matrix matrix_value (bool) const |
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131 { return range.matrix_value (); } |
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132 |
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133 Complex complex_value (bool) const; |
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134 |
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135 ComplexMatrix complex_matrix_value (bool) const |
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136 { return range.matrix_value (); } |
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137 |
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138 Range range_value (void) const { return range; } |
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139 |
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140 octave_value not (void) const; |
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141 |
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142 octave_value uminus (void) const { return octave_value (- range); } |
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143 |
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144 octave_value transpose (void) const; |
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145 |
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146 octave_value hermitian (void) const; |
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147 |
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148 octave_value convert_to_str (void) const; |
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149 |
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150 void print (ostream& os, bool pr_as_read_syntax = false); |
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151 |
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152 int type_id (void) const { return t_id; } |
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153 |
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154 string type_name (void) const { return t_name; } |
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155 |
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156 static int static_type_id (void) { return t_id; } |
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157 |
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158 static void register_type (void) |
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159 { t_id = octave_value_typeinfo::register_type (t_name); } |
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160 |
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161 private: |
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162 |
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163 Range range; |
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164 |
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165 static octave_allocator allocator; |
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166 |
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167 // Type id of range objects, set by register_type (). |
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168 static int t_id; |
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169 |
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170 // Type name of scalar objects, defined in ov-range.cc. |
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171 static const string t_name; |
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172 }; |
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173 |
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174 #endif |
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175 |
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176 /* |
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177 ;;; Local Variables: *** |
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178 ;;; mode: C++ *** |
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179 ;;; End: *** |
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180 */ |
