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comparison src/ov-lazy-idx.h @ 10325:8b3cfc1288e2

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implement lazy index conversions
author Jaroslav Hajek <highegg@gmail.com>
date Tue, 16 Feb 2010 15:28:53 +0100
parents
children de2d43bcb083
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10324:7673850d6adf 10325:8b3cfc1288e2
1 /*
2
3 Copyright (C) 2010 VZLU Prague
4
5 This file is part of Octave.
6
7 Octave is free software; you can redistribute it and/or modify it
8 under the terms of the GNU General Public License as published by the
9 Free Software Foundation; either version 3 of the License, or (at your
10 option) any later version.
11
12 Octave is distributed in the hope that it will be useful, but WITHOUT
13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
15 for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with Octave; see the file COPYING. If not, see
19 <http://www.gnu.org/licenses/>.
20
21 */
22
23 #if !defined (octave_lazy_idx_h)
24 #define octave_lazy_idx_h 1
25
26 #include "ov-re-mat.h"
27
28 // Lazy indices that stay in idx_vector form until the conversion to NDArray is
29 // actually needed.
30
31 class
32 OCTINTERP_API
33 octave_lazy_index : public octave_base_value
34 {
35 public:
36
37 octave_lazy_index (void)
38 : octave_base_value () { }
39
40 octave_lazy_index (const idx_vector& idx)
41 : octave_base_value (), index (idx) { }
42
43 octave_lazy_index (const octave_lazy_index& i)
44 : octave_base_value (), index (i.index), value (i.value) { }
45
46 ~octave_lazy_index (void) { }
47
48 octave_base_value *clone (void) const { return new octave_lazy_index (*this); }
49 octave_base_value *empty_clone (void) const { return new octave_matrix (); }
50
51 type_conv_info numeric_conversion_function (void) const;
52
53 octave_base_value *try_narrowing_conversion (void);
54
55 size_t byte_size (void) const { return numel () * sizeof (octave_idx_type); }
56
57 // FIXME: should avoid conversion.
58 octave_value squeeze (void) const { return make_value ().squeeze (); }
59
60 octave_value full_value (void) const { return make_value (); }
61
62 idx_vector index_vector (void) const
63 { return index; }
64
65 builtin_type_t builtin_type (void) const { return btyp_double; }
66
67 bool is_real_matrix (void) const { return true; }
68
69 bool is_real_type (void) const { return true; }
70
71 bool is_double_type (void) const { return true; }
72
73 bool is_float_type (void) const { return true; }
74
75 octave_value subsref (const std::string& type,
76 const std::list<octave_value_list>& idx)
77 { return make_value ().subsref (type, idx); }
78
79 octave_value_list subsref (const std::string& type,
80 const std::list<octave_value_list>& idx, int)
81 { return subsref (type, idx); }
82
83 octave_value subsasgn (const std::string& type,
84 const std::list<octave_value_list>& idx,
85 const octave_value& rhs)
86 { return make_value ().subsasgn (type, idx, rhs); }
87
88 octave_value do_index_op (const octave_value_list& idx,
89 bool resize_ok = false)
90 { return make_value ().do_index_op (idx, resize_ok); }
91
92 dim_vector dims (void) const { return index.orig_dimensions (); }
93
94 octave_idx_type numel (void) const { return index.length (0); }
95
96 octave_idx_type nnz (void) const { return numel (); }
97
98 // FIXME: should avoid conversion.
99 octave_value reshape (const dim_vector& new_dims) const
100 { return make_value ().reshape (new_dims); }
101
102 octave_value permute (const Array<int>& vec, bool inv = false) const
103 { return make_value ().permute (vec, inv); }
104
105 octave_value resize (const dim_vector& dv, bool fill = false) const
106 { return make_value ().resize (dv, fill); }
107
108 octave_value all (int dim = 0) const { return make_value ().all (dim); }
109 octave_value any (int dim = 0) const { return make_value ().any (dim); }
110
111 MatrixType matrix_type (void) const { return make_value ().matrix_type (); }
112 MatrixType matrix_type (const MatrixType& _typ) const
113 { return make_value ().matrix_type (_typ); }
114
115 // FIXME: should avoid conversion.
116 sortmode is_sorted (sortmode mode = UNSORTED) const
117 { return make_value ().is_sorted (mode); }
118
119 Array<octave_idx_type> sort_rows_idx (sortmode mode = ASCENDING) const
120 { return make_value ().sort_rows_idx (mode); }
121
122 sortmode is_sorted_rows (sortmode mode = UNSORTED) const
123 { return make_value ().is_sorted_rows (mode); }
124
125 bool is_matrix_type (void) const { return true; }
126
127 bool is_numeric_type (void) const { return true; }
128
129 bool is_defined (void) const { return true; }
130
131 bool is_constant (void) const { return true; }
132
133 bool is_true (void) const
134 { return make_value ().is_true (); }
135
136 bool print_as_scalar (void) const
137 { return make_value ().print_as_scalar (); }
138
139 void print (std::ostream& os, bool pr_as_read_syntax = false) const
140 { make_value ().print (os, pr_as_read_syntax); }
141
142 void print_info (std::ostream& os, const std::string& prefix) const
143 { make_value ().print_info (os, prefix); }
144
145 #define FORWARD_VALUE_QUERY(TYPE,NAME) \
146 TYPE \
147 NAME (void) const { return make_value ().NAME (); }
148
149 FORWARD_VALUE_QUERY (int8NDArray, int8_array_value)
150 FORWARD_VALUE_QUERY (int16NDArray, int16_array_value)
151 FORWARD_VALUE_QUERY (int32NDArray, int32_array_value)
152 FORWARD_VALUE_QUERY (int64NDArray, int64_array_value)
153 FORWARD_VALUE_QUERY (uint8NDArray, uint8_array_value)
154 FORWARD_VALUE_QUERY (uint16NDArray, uint16_array_value)
155 FORWARD_VALUE_QUERY (uint32NDArray, uint32_array_value)
156 FORWARD_VALUE_QUERY (uint64NDArray, uint64_array_value)
157
158 #define FORWARD_VALUE_QUERY1(TYPE,NAME) \
159 TYPE \
160 NAME (bool flag = false) const { return make_value ().NAME (flag); }
161
162 FORWARD_VALUE_QUERY1 (double, double_value)
163
164 FORWARD_VALUE_QUERY1 (float, float_value)
165
166 FORWARD_VALUE_QUERY1 (double, scalar_value)
167
168 FORWARD_VALUE_QUERY1 (Matrix, matrix_value)
169
170 FORWARD_VALUE_QUERY1 (FloatMatrix, float_matrix_value)
171
172 FORWARD_VALUE_QUERY1 (Complex, complex_value)
173
174 FORWARD_VALUE_QUERY1 (FloatComplex, float_complex_value)
175
176 FORWARD_VALUE_QUERY1 (ComplexMatrix, complex_matrix_value)
177
178 FORWARD_VALUE_QUERY1 (FloatComplexMatrix, float_complex_matrix_value)
179
180 FORWARD_VALUE_QUERY1 (ComplexNDArray, complex_array_value)
181
182 FORWARD_VALUE_QUERY1 (FloatComplexNDArray, float_complex_array_value)
183
184 FORWARD_VALUE_QUERY1 (boolNDArray, bool_array_value)
185
186 FORWARD_VALUE_QUERY1 (charNDArray, char_array_value)
187
188 FORWARD_VALUE_QUERY1 (NDArray, array_value)
189
190 FORWARD_VALUE_QUERY1 (FloatNDArray, float_array_value)
191
192 FORWARD_VALUE_QUERY1 (SparseMatrix, sparse_matrix_value)
193
194 FORWARD_VALUE_QUERY1 (SparseComplexMatrix, sparse_complex_matrix_value)
195
196 octave_value diag (octave_idx_type k = 0) const
197 { return make_value ().diag (k); }
198
199 octave_value sort (octave_idx_type dim = 0, sortmode mode = ASCENDING) const
200 { return make_value ().sort (dim, mode); }
201
202 octave_value sort (Array<octave_idx_type> &sidx, octave_idx_type dim = 0,
203 sortmode mode = ASCENDING) const
204 { return make_value ().sort (sidx, dim, mode); }
205
206 octave_value convert_to_str_internal (bool pad, bool force, char type) const
207 { return make_value ().convert_to_str_internal (pad, force, type); }
208
209 void print_raw (std::ostream& os, bool pr_as_read_syntax = false) const
210 { return make_value ().print_raw (os, pr_as_read_syntax); }
211
212 bool save_ascii (std::ostream& os);
213
214 bool load_ascii (std::istream& is);
215
216 bool save_binary (std::ostream& os, bool& save_as_floats);
217
218 bool load_binary (std::istream& is, bool swap,
219 oct_mach_info::float_format fmt);
220
221 // HDF5 functions not defined.
222
223 int write (octave_stream& os, int block_size,
224 oct_data_conv::data_type output_type, int skip,
225 oct_mach_info::float_format flt_fmt) const
226 { return make_value ().write (os, block_size, output_type, skip, flt_fmt); }
227
228 // Unsafe. This function exists to support the MEX interface.
229 // You should not use it anywhere else.
230 void *mex_get_data (void) const
231 { return make_value ().mex_get_data (); }
232
233 mxArray *as_mxArray (void) const
234 { return make_value ().as_mxArray (); }
235
236 octave_value map (unary_mapper_t umap) const
237 { return make_value ().map (umap); }
238
239 private:
240 const octave_value& make_value (void) const
241 {
242 if (value.is_undefined ())
243 value = octave_value (index, false);
244
245 return value;
246 }
247
248 octave_value& make_value (void)
249 {
250 if (value.is_undefined ())
251 value = octave_value (index, false);
252
253 return value;
254 }
255
256 idx_vector index;
257 mutable octave_value value;
258
259 DECLARE_OV_TYPEID_FUNCTIONS_AND_DATA
260 };
261
262 #endif
263