Mercurial > hg > octave-nkf
annotate src/ov-range.cc @ 8870:eea0e1b45ec0
optimize string manipulation in lookfor
| author | Jaroslav Hajek <highegg@gmail.com> |
|---|---|
| date | Wed, 25 Feb 2009 10:21:33 +0100 |
| parents | 8b1a2555c4e2 |
| children | eb63fbe60fab |
| rev | line source |
|---|---|
| 2376 | 1 /* |
| 2 | |
| 7017 | 3 Copyright (C) 1996, 1997, 1998, 2000, 2002, 2003, 2004, 2005, 2006, |
| 4 2007 John W. Eaton | |
| 2376 | 5 |
| 6 This file is part of Octave. | |
| 7 | |
| 8 Octave is free software; you can redistribute it and/or modify it | |
| 9 under the terms of the GNU General Public License as published by the | |
| 7016 | 10 Free Software Foundation; either version 3 of the License, or (at your |
| 11 option) any later version. | |
| 2376 | 12 |
| 13 Octave is distributed in the hope that it will be useful, but WITHOUT | |
| 14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 16 for more details. | |
| 17 | |
| 18 You should have received a copy of the GNU General Public License | |
| 7016 | 19 along with Octave; see the file COPYING. If not, see |
| 20 <http://www.gnu.org/licenses/>. | |
| 2376 | 21 |
| 22 */ | |
| 23 | |
| 24 #ifdef HAVE_CONFIG_H | |
| 25 #include <config.h> | |
| 26 #endif | |
| 27 | |
| 3503 | 28 #include <iostream> |
| 2901 | 29 |
| 2376 | 30 #include "lo-ieee.h" |
| 31 #include "lo-utils.h" | |
| 32 | |
| 33 #include "gripes.h" | |
| 34 #include "ops.h" | |
| 3933 | 35 #include "oct-obj.h" |
| 2376 | 36 #include "ov-range.h" |
| 37 #include "ov-re-mat.h" | |
| 2410 | 38 #include "ov-scalar.h" |
| 2376 | 39 #include "pr-output.h" |
| 40 | |
| 4687 | 41 #include "byte-swap.h" |
| 42 #include "ls-hdf5.h" | |
| 43 #include "ls-utils.h" | |
| 44 | |
| 3219 | 45 DEFINE_OCTAVE_ALLOCATOR (octave_range); |
| 2376 | 46 |
| 4612 | 47 DEFINE_OV_TYPEID_FUNCTIONS_AND_DATA (octave_range, "range", "double"); |
| 2376 | 48 |
| 5759 | 49 static octave_base_value * |
| 50 default_numeric_conversion_function (const octave_base_value& a) | |
| 2376 | 51 { |
| 52 CAST_CONV_ARG (const octave_range&); | |
| 53 | |
| 54 return new octave_matrix (v.matrix_value ()); | |
| 55 } | |
| 56 | |
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57 octave_base_value::type_conv_info |
| 2376 | 58 octave_range::numeric_conversion_function (void) const |
| 59 { | |
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60 return octave_base_value::type_conv_info (default_numeric_conversion_function, |
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61 octave_matrix::static_type_id ()); |
| 2376 | 62 } |
| 63 | |
| 5759 | 64 octave_base_value * |
| 2410 | 65 octave_range::try_narrowing_conversion (void) |
| 66 { | |
| 5759 | 67 octave_base_value *retval = 0; |
| 2410 | 68 |
| 69 switch (range.nelem ()) | |
| 70 { | |
| 71 case 1: | |
| 72 retval = new octave_scalar (range.base ()); | |
| 73 break; | |
| 74 | |
| 75 case 0: | |
| 4417 | 76 retval = new octave_matrix (Matrix (1, 0)); |
| 2410 | 77 break; |
| 78 | |
| 79 default: | |
| 80 break; | |
| 81 } | |
| 82 | |
| 83 return retval; | |
| 84 } | |
| 85 | |
| 2436 | 86 octave_value |
| 4247 | 87 octave_range::subsref (const std::string& type, |
| 4219 | 88 const std::list<octave_value_list>& idx) |
| 3933 | 89 { |
| 90 octave_value retval; | |
| 91 | |
| 92 switch (type[0]) | |
| 93 { | |
| 94 case '(': | |
| 95 retval = do_index_op (idx.front ()); | |
| 96 break; | |
| 97 | |
| 98 case '{': | |
| 99 case '.': | |
| 100 { | |
| 101 std::string nm = type_name (); | |
| 102 error ("%s cannot be indexed with %c", nm.c_str (), type[0]); | |
| 103 } | |
| 104 break; | |
| 105 | |
| 106 default: | |
| 107 panic_impossible (); | |
| 108 } | |
| 109 | |
| 110 return retval.next_subsref (type, idx); | |
| 111 } | |
| 112 | |
| 113 octave_value | |
| 5885 | 114 octave_range::do_index_op (const octave_value_list& idx, bool resize_ok) |
| 2436 | 115 { |
| 5775 | 116 // FIXME -- this doesn't solve the problem of |
| 2436 | 117 // |
| 118 // a = 1:5; a(1, 1, 1) | |
| 119 // | |
| 120 // and similar constructions. Hmm... | |
| 121 | |
| 5775 | 122 // FIXME -- using this constructor avoids possibly narrowing |
| 2436 | 123 // the range to a scalar value. Need a better solution to this |
| 124 // problem. | |
| 125 | |
| 126 octave_value tmp (new octave_matrix (range.matrix_value ())); | |
| 127 | |
| 3933 | 128 return tmp.do_index_op (idx, resize_ok); |
| 2436 | 129 } |
| 130 | |
| 2376 | 131 double |
| 132 octave_range::double_value (bool) const | |
| 133 { | |
| 4102 | 134 double retval = lo_ieee_nan_value (); |
| 2376 | 135 |
| 5275 | 136 octave_idx_type nel = range.nelem (); |
| 2376 | 137 |
| 4455 | 138 if (nel > 0) |
| 139 { | |
| 5781 | 140 gripe_implicit_conversion ("Octave:array-as-scalar", |
| 141 "range", "real scalar"); | |
| 4455 | 142 |
| 143 retval = range.base (); | |
| 144 } | |
| 2376 | 145 else |
| 146 gripe_invalid_conversion ("range", "real scalar"); | |
| 147 | |
| 148 return retval; | |
| 149 } | |
| 150 | |
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151 float |
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152 octave_range::float_value (bool) const |
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153 { |
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154 float retval = lo_ieee_float_nan_value (); |
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155 |
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156 octave_idx_type nel = range.nelem (); |
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157 |
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158 if (nel > 0) |
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159 { |
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160 gripe_implicit_conversion ("Octave:array-as-scalar", |
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161 "range", "real scalar"); |
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162 |
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163 retval = range.base (); |
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164 } |
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165 else |
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166 gripe_invalid_conversion ("range", "real scalar"); |
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167 |
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168 return retval; |
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169 } |
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170 |
| 2376 | 171 octave_value |
| 4017 | 172 octave_range::all (int dim) const |
| 2376 | 173 { |
| 5775 | 174 // FIXME -- this is a potential waste of memory. |
| 2436 | 175 |
| 176 Matrix m = range.matrix_value (); | |
| 177 | |
| 4017 | 178 return m.all (dim); |
| 2376 | 179 } |
| 180 | |
| 181 octave_value | |
| 4017 | 182 octave_range::any (int dim) const |
| 2376 | 183 { |
| 5775 | 184 // FIXME -- this is a potential waste of memory. |
| 4017 | 185 |
| 186 Matrix m = range.matrix_value (); | |
| 187 | |
| 188 return m.any (dim); | |
| 2376 | 189 } |
| 190 | |
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191 octave_value |
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192 octave_range::diag (octave_idx_type k) const |
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193 { |
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194 return (k == 0 |
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195 ? octave_value (DiagMatrix (DiagArray2<double> (range.matrix_value ()))) |
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196 : octave_value (range.diag (k))); |
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197 } |
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198 |
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199 |
| 2376 | 200 bool |
| 201 octave_range::is_true (void) const | |
| 202 { | |
| 203 bool retval = false; | |
| 2436 | 204 |
| 4478 | 205 if (range.nelem () != 0) |
| 2436 | 206 { |
| 5775 | 207 // FIXME -- this is a potential waste of memory. |
| 2436 | 208 |
| 209 Matrix m ((range.matrix_value () . all ()) . all ()); | |
| 210 | |
| 211 retval = (m.rows () == 1 && m.columns () == 1 && m (0, 0) != 0.0); | |
| 212 } | |
| 213 | |
| 2376 | 214 return retval; |
| 215 } | |
| 216 | |
| 217 Complex | |
| 218 octave_range::complex_value (bool) const | |
| 219 { | |
| 4102 | 220 double tmp = lo_ieee_nan_value (); |
| 221 | |
| 222 Complex retval (tmp, tmp); | |
| 2376 | 223 |
| 5275 | 224 octave_idx_type nel = range.nelem (); |
| 2376 | 225 |
| 4455 | 226 if (nel > 0) |
| 227 { | |
| 5781 | 228 gripe_implicit_conversion ("Octave:array-as-scalar", |
| 229 "range", "complex scalar"); | |
| 4455 | 230 |
| 231 retval = range.base (); | |
| 232 } | |
| 2376 | 233 else |
| 234 gripe_invalid_conversion ("range", "complex scalar"); | |
| 235 | |
| 236 return retval; | |
| 237 } | |
| 238 | |
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239 FloatComplex |
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240 octave_range::float_complex_value (bool) const |
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241 { |
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242 float tmp = lo_ieee_float_nan_value (); |
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243 |
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244 FloatComplex retval (tmp, tmp); |
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245 |
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246 octave_idx_type nel = range.nelem (); |
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247 |
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248 if (nel > 0) |
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249 { |
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250 gripe_implicit_conversion ("Octave:array-as-scalar", |
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251 "range", "complex scalar"); |
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252 |
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253 retval = range.base (); |
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254 } |
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255 else |
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256 gripe_invalid_conversion ("range", "complex scalar"); |
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257 |
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258 return retval; |
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259 } |
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260 |
| 5731 | 261 octave_value |
| 262 octave_range::resize (const dim_vector& dv, bool fill) const | |
| 263 { | |
| 264 NDArray retval = array_value (); | |
| 265 if (fill) | |
| 266 retval.resize (dv, NDArray::resize_fill_value()); | |
| 267 else | |
| 268 retval.resize (dv); | |
| 269 return retval; | |
| 270 } | |
| 271 | |
| 2376 | 272 octave_value |
| 5279 | 273 octave_range::convert_to_str_internal (bool pad, bool force, char type) const |
| 2449 | 274 { |
| 275 octave_value tmp (range.matrix_value ()); | |
| 5279 | 276 return tmp.convert_to_str (pad, force, type); |
| 2449 | 277 } |
| 278 | |
| 2376 | 279 void |
| 3523 | 280 octave_range::print (std::ostream& os, bool pr_as_read_syntax) const |
| 2901 | 281 { |
| 282 print_raw (os, pr_as_read_syntax); | |
| 283 newline (os); | |
| 284 } | |
| 285 | |
| 286 void | |
| 3523 | 287 octave_range::print_raw (std::ostream& os, bool pr_as_read_syntax) const |
| 2901 | 288 { |
| 289 octave_print_internal (os, range, pr_as_read_syntax, | |
| 290 current_print_indent_level ()); | |
| 291 } | |
| 292 | |
| 293 bool | |
| 3523 | 294 octave_range::print_name_tag (std::ostream& os, const std::string& name) const |
| 2376 | 295 { |
| 2901 | 296 bool retval = false; |
| 297 | |
| 5275 | 298 octave_idx_type n = range.nelem (); |
| 2901 | 299 |
| 300 indent (os); | |
| 301 | |
| 302 if (n == 0 || n == 1) | |
| 303 os << name << " = "; | |
| 304 else | |
| 305 { | |
| 306 os << name << " ="; | |
| 307 newline (os); | |
| 308 newline (os); | |
| 309 retval = true; | |
| 310 } | |
| 311 | |
| 312 return retval; | |
| 2376 | 313 } |
| 314 | |
| 4687 | 315 // Skip white space and comments on stream IS. |
| 316 | |
| 317 static void | |
| 318 skip_comments (std::istream& is) | |
| 319 { | |
| 320 char c = '\0'; | |
| 321 while (is.get (c)) | |
| 322 { | |
| 323 if (c == ' ' || c == '\t' || c == '\n') | |
| 324 ; // Skip whitespace on way to beginning of next line. | |
| 325 else | |
| 326 break; | |
| 327 } | |
| 328 | |
| 329 for (;;) | |
| 330 { | |
| 331 if (is && (c == '%' || c == '#')) | |
| 332 while (is.get (c) && c != '\n') | |
| 333 ; // Skip to beginning of next line, ignoring everything. | |
| 334 else | |
| 335 break; | |
| 336 } | |
| 337 } | |
| 338 | |
| 339 bool | |
| 6974 | 340 octave_range::save_ascii (std::ostream& os) |
| 4687 | 341 { |
| 342 Range r = range_value (); | |
| 343 double base = r.base (); | |
| 344 double limit = r.limit (); | |
| 345 double inc = r.inc (); | |
| 346 | |
| 347 os << "# base, limit, increment\n"; | |
| 348 octave_write_double (os, base); | |
| 349 os << " "; | |
| 350 octave_write_double (os, limit); | |
| 351 os << " "; | |
| 352 octave_write_double (os, inc); | |
| 353 os << "\n"; | |
| 354 | |
| 355 return true; | |
| 356 } | |
| 357 | |
| 358 bool | |
| 359 octave_range::load_ascii (std::istream& is) | |
| 360 { | |
| 361 // # base, limit, range comment added by save (). | |
| 362 skip_comments (is); | |
| 363 | |
| 364 is >> range; | |
| 365 | |
| 366 if (!is) | |
| 367 { | |
| 368 error ("load: failed to load range constant"); | |
| 369 return false; | |
| 370 } | |
| 371 | |
| 372 return true; | |
| 373 } | |
| 374 | |
| 375 bool | |
| 376 octave_range::save_binary (std::ostream& os, bool& /* save_as_floats */) | |
| 377 { | |
| 5760 | 378 char tmp = LS_DOUBLE; |
| 379 os.write (reinterpret_cast<char *> (&tmp), 1); | |
| 4687 | 380 Range r = range_value (); |
| 381 double bas = r.base (); | |
| 382 double lim = r.limit (); | |
| 383 double inc = r.inc (); | |
| 5760 | 384 os.write (reinterpret_cast<char *> (&bas), 8); |
| 385 os.write (reinterpret_cast<char *> (&lim), 8); | |
| 386 os.write (reinterpret_cast<char *> (&inc), 8); | |
| 4687 | 387 |
| 388 return true; | |
| 389 } | |
| 390 | |
| 391 bool | |
| 392 octave_range::load_binary (std::istream& is, bool swap, | |
| 393 oct_mach_info::float_format /* fmt */) | |
| 394 { | |
| 395 char tmp; | |
| 5760 | 396 if (! is.read (reinterpret_cast<char *> (&tmp), 1)) |
| 4687 | 397 return false; |
| 398 double bas, lim, inc; | |
| 5760 | 399 if (! is.read (reinterpret_cast<char *> (&bas), 8)) |
| 4687 | 400 return false; |
| 401 if (swap) | |
| 4944 | 402 swap_bytes<8> (&bas); |
| 5760 | 403 if (! is.read (reinterpret_cast<char *> (&lim), 8)) |
| 4687 | 404 return false; |
| 405 if (swap) | |
| 4944 | 406 swap_bytes<8> (&lim); |
| 5760 | 407 if (! is.read (reinterpret_cast<char *> (&inc), 8)) |
| 4687 | 408 return false; |
| 409 if (swap) | |
| 4944 | 410 swap_bytes<8> (&inc); |
| 4687 | 411 Range r (bas, lim, inc); |
| 412 range = r; | |
| 413 return true; | |
| 414 } | |
| 415 | |
| 416 #if defined (HAVE_HDF5) | |
| 4944 | 417 |
| 4687 | 418 // The following subroutines creates an HDF5 representation of the way |
| 419 // we will store Octave range types (triplets of floating-point numbers). | |
| 420 // NUM_TYPE is the HDF5 numeric type to use for storage (e.g. | |
| 421 // H5T_NATIVE_DOUBLE to save as 'double'). Note that any necessary | |
| 422 // conversions are handled automatically by HDF5. | |
| 423 | |
| 424 static hid_t | |
| 425 hdf5_make_range_type (hid_t num_type) | |
| 426 { | |
| 427 hid_t type_id = H5Tcreate (H5T_COMPOUND, sizeof (double) * 3); | |
| 428 | |
| 429 H5Tinsert (type_id, "base", 0 * sizeof (double), num_type); | |
| 430 H5Tinsert (type_id, "limit", 1 * sizeof (double), num_type); | |
| 431 H5Tinsert (type_id, "increment", 2 * sizeof (double), num_type); | |
| 432 | |
| 433 return type_id; | |
| 434 } | |
| 435 | |
| 436 bool | |
| 437 octave_range::save_hdf5 (hid_t loc_id, const char *name, | |
| 438 bool /* save_as_floats */) | |
| 439 { | |
| 4792 | 440 hsize_t dimens[3]; |
| 4687 | 441 hid_t space_hid = -1, type_hid = -1, data_hid = -1; |
| 442 bool retval = true; | |
| 443 | |
| 4815 | 444 space_hid = H5Screate_simple (0, dimens, 0); |
| 4687 | 445 if (space_hid < 0) return false; |
| 446 | |
| 447 type_hid = hdf5_make_range_type (H5T_NATIVE_DOUBLE); | |
| 448 if (type_hid < 0) | |
| 449 { | |
| 450 H5Sclose (space_hid); | |
| 451 return false; | |
| 452 } | |
| 453 | |
| 454 data_hid = H5Dcreate (loc_id, name, type_hid, space_hid, H5P_DEFAULT); | |
| 455 if (data_hid < 0) | |
| 456 { | |
| 457 H5Sclose (space_hid); | |
| 458 H5Tclose (type_hid); | |
| 459 return false; | |
| 460 } | |
| 461 | |
| 462 Range r = range_value (); | |
| 463 double range_vals[3]; | |
| 464 range_vals[0] = r.base (); | |
| 465 range_vals[1] = r.limit (); | |
| 466 range_vals[2] = r.inc (); | |
| 467 | |
| 468 retval = H5Dwrite (data_hid, type_hid, H5S_ALL, H5S_ALL, H5P_DEFAULT, | |
| 4815 | 469 range_vals) >= 0; |
| 4687 | 470 |
| 471 H5Dclose (data_hid); | |
| 472 H5Tclose (type_hid); | |
| 473 H5Sclose (space_hid); | |
| 4837 | 474 |
| 4687 | 475 return retval; |
| 476 } | |
| 477 | |
| 478 bool | |
| 479 octave_range::load_hdf5 (hid_t loc_id, const char *name, | |
| 480 bool /* have_h5giterate_bug */) | |
| 481 { | |
| 482 bool retval = false; | |
| 4837 | 483 |
| 4687 | 484 hid_t data_hid = H5Dopen (loc_id, name); |
| 485 hid_t type_hid = H5Dget_type (data_hid); | |
| 486 | |
| 487 hid_t range_type = hdf5_make_range_type (H5T_NATIVE_DOUBLE); | |
| 488 | |
| 489 if (! hdf5_types_compatible (type_hid, range_type)) | |
| 490 { | |
| 4837 | 491 H5Tclose (range_type); |
| 4687 | 492 H5Dclose (data_hid); |
| 493 return false; | |
| 494 } | |
| 495 | |
| 496 hid_t space_hid = H5Dget_space (data_hid); | |
| 497 hsize_t rank = H5Sget_simple_extent_ndims (space_hid); | |
| 498 | |
| 499 if (rank != 0) | |
| 500 { | |
| 4837 | 501 H5Tclose (range_type); |
| 4687 | 502 H5Sclose (space_hid); |
| 503 H5Dclose (data_hid); | |
| 504 return false; | |
| 505 } | |
| 506 | |
| 507 double rangevals[3]; | |
| 508 if (H5Dread (data_hid, range_type, H5S_ALL, H5S_ALL, H5P_DEFAULT, | |
| 4815 | 509 rangevals) >= 0) |
| 4687 | 510 { |
| 511 retval = true; | |
| 512 Range r (rangevals[0], rangevals[1], rangevals[2]); | |
| 513 range = r; | |
| 514 } | |
| 515 | |
| 4837 | 516 H5Tclose (range_type); |
| 4687 | 517 H5Sclose (space_hid); |
| 518 H5Dclose (data_hid); | |
| 4837 | 519 |
| 4687 | 520 return retval; |
| 521 } | |
| 4944 | 522 |
| 4687 | 523 #endif |
| 524 | |
| 5900 | 525 mxArray * |
| 526 octave_range::as_mxArray (void) const | |
| 527 { | |
| 528 mxArray *retval = new mxArray (mxDOUBLE_CLASS, dims (), mxREAL); | |
| 529 | |
| 530 double *pr = static_cast<double *> (retval->get_data ()); | |
| 531 | |
| 6686 | 532 mwSize nel = numel (); |
| 5900 | 533 |
| 534 Matrix m = matrix_value (); | |
| 535 | |
| 536 const double *p = m.data (); | |
| 537 | |
| 6686 | 538 for (mwSize i = 0; i < nel; i++) |
| 5900 | 539 pr[i] = p[i]; |
| 540 | |
| 541 return retval; | |
| 542 } | |
| 543 | |
| 2376 | 544 /* |
| 545 ;;; Local Variables: *** | |
| 546 ;;; mode: C++ *** | |
| 547 ;;; End: *** | |
| 548 */ |