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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_oct_obj_h) |
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25 #define octave_oct_obj_h 1 |
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26 |
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27 #include <string> |
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28 #include <vector> |
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29 |
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30 #include "oct-alloc.h" |
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31 #include "str-vec.h" |
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32 |
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33 #include "ov.h" |
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34 |
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35 class |
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36 octave_value_list |
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37 { |
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38 public: |
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39 |
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40 octave_value_list (void) |
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41 : data () { } |
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42 |
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43 octave_value_list (octave_idx_type n, const octave_value& val) |
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44 : data (n, val) { } |
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45 |
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46 octave_value_list (const octave_value& tc) |
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47 : data (1, tc) { } |
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48 |
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49 octave_value_list (const octave_value_list& obj) |
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50 : data (obj.data), names (obj.names) { } |
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51 |
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52 ~octave_value_list (void) { } |
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53 |
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54 void *operator new (size_t size) |
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55 { return allocator.alloc (size); } |
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56 |
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57 void operator delete (void *p, size_t size) |
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58 { allocator.free (p, size); } |
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59 |
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60 // FIXME -- without this, I have errors with the stack of |
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61 // octave_value_list objects in ov-usr-fcn.h. Why? |
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62 void *operator new (size_t size, void *p) |
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63 { return ::operator new (size, p); } |
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64 |
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65 void operator delete (void *p, void *) |
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66 { |
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67 #if defined (HAVE_PLACEMENT_DELETE) |
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68 ::operator delete (p, static_cast<void *> (0)); |
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69 #else |
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70 ::operator delete (p); |
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71 #endif |
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72 } |
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73 |
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74 octave_value_list& operator = (const octave_value_list& obj) |
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75 { |
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76 if (this != &obj) |
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77 { |
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78 data = obj.data; |
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79 names = obj.names; |
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80 } |
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81 |
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82 return *this; |
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83 } |
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84 |
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85 bool valid_scalar_indices (void) const; |
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86 |
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87 // Assignment will resize on range errors. |
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88 |
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89 octave_value& operator () (octave_idx_type n) { return elem (n); } |
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90 |
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91 octave_value operator () (octave_idx_type n) const { return elem (n); } |
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92 |
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93 octave_idx_type length (void) const { return data.size (); } |
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94 |
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95 bool empty (void) const { return length () == 0; } |
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96 |
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97 void resize (octave_idx_type n) { data.resize (n); } |
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98 |
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99 void resize (octave_idx_type n, const octave_value& val); |
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100 |
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101 octave_value_list& prepend (const octave_value& val); |
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102 |
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103 octave_value_list& append (const octave_value& val); |
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104 |
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105 octave_value_list& append (const octave_value_list& lst); |
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106 |
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107 octave_value_list& reverse (void); |
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108 |
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109 octave_value_list splice (octave_idx_type offset, octave_idx_type length, |
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110 const octave_value_list& lst) const; |
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111 |
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112 bool all_strings_p (void) const; |
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113 |
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114 string_vector make_argv (const std::string&) const; |
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115 |
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116 void stash_name_tags (const string_vector& nm) { names = nm; } |
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117 |
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118 string_vector name_tags (void) const { return names; } |
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119 |
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120 private: |
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121 |
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122 static octave_allocator allocator; |
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123 |
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124 std::vector<octave_value> data; |
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125 |
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126 // This list of strings can be used to tag each element of data with |
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127 // a name. By default, it is empty. |
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128 string_vector names; |
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129 |
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130 // This constructor is private with no definition to keep statements |
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131 // like |
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132 // |
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133 // octave_value_list foo = 5; |
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134 // octave_value_list foo = 5.0; |
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135 // |
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136 // from doing different things. Instead, you have to use the |
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137 // constructor |
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138 // |
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139 // octave_value_list (n, val); |
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140 // |
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141 // and supply a default value to create a vector-valued |
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142 // octave_value_list. |
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143 |
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144 octave_value_list (octave_idx_type n); |
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145 |
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146 octave_value_list (const Array<octave_value>& d); |
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147 |
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148 octave_value& elem (octave_idx_type n) |
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149 { |
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150 static Matrix empty_matrix; |
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151 |
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152 if (n >= length ()) |
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153 resize (n+1, empty_matrix); |
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154 |
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155 return data[n]; |
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156 } |
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157 |
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158 octave_value elem (octave_idx_type n) const |
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159 { |
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160 #if defined (BOUNDS_CHECKING) |
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161 return data.at (n); |
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162 #else |
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163 return data[n]; |
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164 #endif |
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165 } |
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166 }; |
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167 |
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168 #endif |
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169 |
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170 /* |
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171 ;;; Local Variables: *** |
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172 ;;; mode: C++ *** |
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173 ;;; End: *** |
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174 */ |
