Guido van Rossum | f70e43a | 1991-02-19 12:39:46 +0000 | [diff] [blame] | 1 | /*********************************************************** |
Guido van Rossum | bab9d03 | 1992-04-05 14:26:55 +0000 | [diff] [blame] | 2 | Copyright 1991, 1992 by Stichting Mathematisch Centrum, Amsterdam, The |
Guido van Rossum | f70e43a | 1991-02-19 12:39:46 +0000 | [diff] [blame] | 3 | Netherlands. |
| 4 | |
| 5 | All Rights Reserved |
| 6 | |
| 7 | Permission to use, copy, modify, and distribute this software and its |
| 8 | documentation for any purpose and without fee is hereby granted, |
| 9 | provided that the above copyright notice appear in all copies and that |
| 10 | both that copyright notice and this permission notice appear in |
| 11 | supporting documentation, and that the names of Stichting Mathematisch |
| 12 | Centrum or CWI not be used in advertising or publicity pertaining to |
| 13 | distribution of the software without specific, written prior permission. |
| 14 | |
| 15 | STICHTING MATHEMATISCH CENTRUM DISCLAIMS ALL WARRANTIES WITH REGARD TO |
| 16 | THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND |
| 17 | FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH CENTRUM BE LIABLE |
| 18 | FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| 19 | WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| 20 | ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT |
| 21 | OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| 22 | |
| 23 | ******************************************************************/ |
| 24 | |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 25 | /* List object implementation */ |
| 26 | |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 27 | #include "allobjects.h" |
Guido van Rossum | fa3da8a | 1992-01-27 16:53:23 +0000 | [diff] [blame] | 28 | #include "modsupport.h" |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame^] | 29 | #include "ceval.h" |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 30 | |
| 31 | object * |
| 32 | newlistobject(size) |
| 33 | int size; |
| 34 | { |
| 35 | int i; |
| 36 | listobject *op; |
| 37 | if (size < 0) { |
Guido van Rossum | 2a9096b | 1990-10-21 22:15:08 +0000 | [diff] [blame] | 38 | err_badcall(); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 39 | return NULL; |
| 40 | } |
| 41 | op = (listobject *) malloc(sizeof(listobject)); |
| 42 | if (op == NULL) { |
Guido van Rossum | 2a9096b | 1990-10-21 22:15:08 +0000 | [diff] [blame] | 43 | return err_nomem(); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 44 | } |
| 45 | if (size <= 0) { |
| 46 | op->ob_item = NULL; |
| 47 | } |
| 48 | else { |
| 49 | op->ob_item = (object **) malloc(size * sizeof(object *)); |
| 50 | if (op->ob_item == NULL) { |
| 51 | free((ANY *)op); |
Guido van Rossum | 2a9096b | 1990-10-21 22:15:08 +0000 | [diff] [blame] | 52 | return err_nomem(); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 53 | } |
| 54 | } |
| 55 | NEWREF(op); |
| 56 | op->ob_type = &Listtype; |
| 57 | op->ob_size = size; |
| 58 | for (i = 0; i < size; i++) |
| 59 | op->ob_item[i] = NULL; |
| 60 | return (object *) op; |
| 61 | } |
| 62 | |
| 63 | int |
| 64 | getlistsize(op) |
| 65 | object *op; |
| 66 | { |
| 67 | if (!is_listobject(op)) { |
Guido van Rossum | 2a9096b | 1990-10-21 22:15:08 +0000 | [diff] [blame] | 68 | err_badcall(); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 69 | return -1; |
| 70 | } |
| 71 | else |
| 72 | return ((listobject *)op) -> ob_size; |
| 73 | } |
| 74 | |
| 75 | object * |
| 76 | getlistitem(op, i) |
| 77 | object *op; |
| 78 | int i; |
| 79 | { |
| 80 | if (!is_listobject(op)) { |
Guido van Rossum | 2a9096b | 1990-10-21 22:15:08 +0000 | [diff] [blame] | 81 | err_badcall(); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 82 | return NULL; |
| 83 | } |
| 84 | if (i < 0 || i >= ((listobject *)op) -> ob_size) { |
Guido van Rossum | 2a9096b | 1990-10-21 22:15:08 +0000 | [diff] [blame] | 85 | err_setstr(IndexError, "list index out of range"); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 86 | return NULL; |
| 87 | } |
| 88 | return ((listobject *)op) -> ob_item[i]; |
| 89 | } |
| 90 | |
| 91 | int |
| 92 | setlistitem(op, i, newitem) |
| 93 | register object *op; |
| 94 | register int i; |
| 95 | register object *newitem; |
| 96 | { |
| 97 | register object *olditem; |
| 98 | if (!is_listobject(op)) { |
Guido van Rossum | e6f7d18 | 1991-10-20 20:20:40 +0000 | [diff] [blame] | 99 | XDECREF(newitem); |
Guido van Rossum | 2a9096b | 1990-10-21 22:15:08 +0000 | [diff] [blame] | 100 | err_badcall(); |
| 101 | return -1; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 102 | } |
| 103 | if (i < 0 || i >= ((listobject *)op) -> ob_size) { |
Guido van Rossum | e6f7d18 | 1991-10-20 20:20:40 +0000 | [diff] [blame] | 104 | XDECREF(newitem); |
Guido van Rossum | 2a9096b | 1990-10-21 22:15:08 +0000 | [diff] [blame] | 105 | err_setstr(IndexError, "list assignment index out of range"); |
| 106 | return -1; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 107 | } |
| 108 | olditem = ((listobject *)op) -> ob_item[i]; |
| 109 | ((listobject *)op) -> ob_item[i] = newitem; |
Guido van Rossum | e6f7d18 | 1991-10-20 20:20:40 +0000 | [diff] [blame] | 110 | XDECREF(olditem); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 111 | return 0; |
| 112 | } |
| 113 | |
| 114 | static int |
| 115 | ins1(self, where, v) |
| 116 | listobject *self; |
| 117 | int where; |
| 118 | object *v; |
| 119 | { |
| 120 | int i; |
| 121 | object **items; |
Guido van Rossum | 2a9096b | 1990-10-21 22:15:08 +0000 | [diff] [blame] | 122 | if (v == NULL) { |
| 123 | err_badcall(); |
| 124 | return -1; |
| 125 | } |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 126 | items = self->ob_item; |
| 127 | RESIZE(items, object *, self->ob_size+1); |
Guido van Rossum | 2a9096b | 1990-10-21 22:15:08 +0000 | [diff] [blame] | 128 | if (items == NULL) { |
| 129 | err_nomem(); |
| 130 | return -1; |
| 131 | } |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 132 | if (where < 0) |
| 133 | where = 0; |
| 134 | if (where > self->ob_size) |
| 135 | where = self->ob_size; |
| 136 | for (i = self->ob_size; --i >= where; ) |
| 137 | items[i+1] = items[i]; |
| 138 | INCREF(v); |
| 139 | items[where] = v; |
| 140 | self->ob_item = items; |
| 141 | self->ob_size++; |
| 142 | return 0; |
| 143 | } |
| 144 | |
| 145 | int |
| 146 | inslistitem(op, where, newitem) |
| 147 | object *op; |
| 148 | int where; |
| 149 | object *newitem; |
| 150 | { |
Guido van Rossum | 2a9096b | 1990-10-21 22:15:08 +0000 | [diff] [blame] | 151 | if (!is_listobject(op)) { |
| 152 | err_badcall(); |
| 153 | return -1; |
| 154 | } |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 155 | return ins1((listobject *)op, where, newitem); |
| 156 | } |
| 157 | |
| 158 | int |
| 159 | addlistitem(op, newitem) |
| 160 | object *op; |
| 161 | object *newitem; |
| 162 | { |
Guido van Rossum | 2a9096b | 1990-10-21 22:15:08 +0000 | [diff] [blame] | 163 | if (!is_listobject(op)) { |
| 164 | err_badcall(); |
| 165 | return -1; |
| 166 | } |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 167 | return ins1((listobject *)op, |
| 168 | (int) ((listobject *)op)->ob_size, newitem); |
| 169 | } |
| 170 | |
| 171 | /* Methods */ |
| 172 | |
| 173 | static void |
| 174 | list_dealloc(op) |
| 175 | listobject *op; |
| 176 | { |
| 177 | int i; |
| 178 | for (i = 0; i < op->ob_size; i++) { |
Guido van Rossum | e6f7d18 | 1991-10-20 20:20:40 +0000 | [diff] [blame] | 179 | XDECREF(op->ob_item[i]); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 180 | } |
| 181 | if (op->ob_item != NULL) |
| 182 | free((ANY *)op->ob_item); |
| 183 | free((ANY *)op); |
| 184 | } |
| 185 | |
Guido van Rossum | 9093361 | 1991-06-07 16:10:43 +0000 | [diff] [blame] | 186 | static int |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 187 | list_print(op, fp, flags) |
| 188 | listobject *op; |
| 189 | FILE *fp; |
| 190 | int flags; |
| 191 | { |
| 192 | int i; |
| 193 | fprintf(fp, "["); |
Guido van Rossum | 9093361 | 1991-06-07 16:10:43 +0000 | [diff] [blame] | 194 | for (i = 0; i < op->ob_size; i++) { |
| 195 | if (i > 0) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 196 | fprintf(fp, ", "); |
Guido van Rossum | 9093361 | 1991-06-07 16:10:43 +0000 | [diff] [blame] | 197 | if (printobject(op->ob_item[i], fp, flags) != 0) |
| 198 | return -1; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 199 | } |
| 200 | fprintf(fp, "]"); |
Guido van Rossum | 9093361 | 1991-06-07 16:10:43 +0000 | [diff] [blame] | 201 | return 0; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 202 | } |
| 203 | |
| 204 | object * |
| 205 | list_repr(v) |
| 206 | listobject *v; |
| 207 | { |
| 208 | object *s, *t, *comma; |
| 209 | int i; |
| 210 | s = newstringobject("["); |
| 211 | comma = newstringobject(", "); |
| 212 | for (i = 0; i < v->ob_size && s != NULL; i++) { |
| 213 | if (i > 0) |
| 214 | joinstring(&s, comma); |
| 215 | t = reprobject(v->ob_item[i]); |
| 216 | joinstring(&s, t); |
| 217 | DECREF(t); |
| 218 | } |
| 219 | DECREF(comma); |
| 220 | t = newstringobject("]"); |
| 221 | joinstring(&s, t); |
| 222 | DECREF(t); |
| 223 | return s; |
| 224 | } |
| 225 | |
| 226 | static int |
| 227 | list_compare(v, w) |
| 228 | listobject *v, *w; |
| 229 | { |
| 230 | int len = (v->ob_size < w->ob_size) ? v->ob_size : w->ob_size; |
| 231 | int i; |
| 232 | for (i = 0; i < len; i++) { |
| 233 | int cmp = cmpobject(v->ob_item[i], w->ob_item[i]); |
| 234 | if (cmp != 0) |
| 235 | return cmp; |
| 236 | } |
| 237 | return v->ob_size - w->ob_size; |
| 238 | } |
| 239 | |
| 240 | static int |
| 241 | list_length(a) |
| 242 | listobject *a; |
| 243 | { |
| 244 | return a->ob_size; |
| 245 | } |
| 246 | |
| 247 | static object * |
| 248 | list_item(a, i) |
| 249 | listobject *a; |
| 250 | int i; |
| 251 | { |
| 252 | if (i < 0 || i >= a->ob_size) { |
Guido van Rossum | 2a9096b | 1990-10-21 22:15:08 +0000 | [diff] [blame] | 253 | err_setstr(IndexError, "list index out of range"); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 254 | return NULL; |
| 255 | } |
| 256 | INCREF(a->ob_item[i]); |
| 257 | return a->ob_item[i]; |
| 258 | } |
| 259 | |
| 260 | static object * |
| 261 | list_slice(a, ilow, ihigh) |
| 262 | listobject *a; |
| 263 | int ilow, ihigh; |
| 264 | { |
| 265 | listobject *np; |
| 266 | int i; |
| 267 | if (ilow < 0) |
| 268 | ilow = 0; |
| 269 | else if (ilow > a->ob_size) |
| 270 | ilow = a->ob_size; |
| 271 | if (ihigh < 0) |
| 272 | ihigh = 0; |
| 273 | if (ihigh < ilow) |
| 274 | ihigh = ilow; |
| 275 | else if (ihigh > a->ob_size) |
| 276 | ihigh = a->ob_size; |
| 277 | np = (listobject *) newlistobject(ihigh - ilow); |
| 278 | if (np == NULL) |
| 279 | return NULL; |
| 280 | for (i = ilow; i < ihigh; i++) { |
| 281 | object *v = a->ob_item[i]; |
| 282 | INCREF(v); |
| 283 | np->ob_item[i - ilow] = v; |
| 284 | } |
| 285 | return (object *)np; |
| 286 | } |
| 287 | |
| 288 | static object * |
| 289 | list_concat(a, bb) |
| 290 | listobject *a; |
| 291 | object *bb; |
| 292 | { |
| 293 | int size; |
| 294 | int i; |
| 295 | listobject *np; |
| 296 | if (!is_listobject(bb)) { |
Guido van Rossum | 2a9096b | 1990-10-21 22:15:08 +0000 | [diff] [blame] | 297 | err_badarg(); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 298 | return NULL; |
| 299 | } |
| 300 | #define b ((listobject *)bb) |
| 301 | size = a->ob_size + b->ob_size; |
| 302 | np = (listobject *) newlistobject(size); |
| 303 | if (np == NULL) { |
Guido van Rossum | 9093361 | 1991-06-07 16:10:43 +0000 | [diff] [blame] | 304 | return NULL; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 305 | } |
| 306 | for (i = 0; i < a->ob_size; i++) { |
| 307 | object *v = a->ob_item[i]; |
| 308 | INCREF(v); |
| 309 | np->ob_item[i] = v; |
| 310 | } |
| 311 | for (i = 0; i < b->ob_size; i++) { |
| 312 | object *v = b->ob_item[i]; |
| 313 | INCREF(v); |
| 314 | np->ob_item[i + a->ob_size] = v; |
| 315 | } |
| 316 | return (object *)np; |
| 317 | #undef b |
| 318 | } |
| 319 | |
Guido van Rossum | ed98d48 | 1991-03-06 13:07:53 +0000 | [diff] [blame] | 320 | static object * |
| 321 | list_repeat(a, n) |
| 322 | listobject *a; |
| 323 | int n; |
| 324 | { |
| 325 | int i, j; |
| 326 | int size; |
| 327 | listobject *np; |
| 328 | object **p; |
| 329 | if (n < 0) |
| 330 | n = 0; |
| 331 | size = a->ob_size * n; |
| 332 | np = (listobject *) newlistobject(size); |
| 333 | if (np == NULL) |
| 334 | return NULL; |
| 335 | p = np->ob_item; |
| 336 | for (i = 0; i < n; i++) { |
| 337 | for (j = 0; j < a->ob_size; j++) { |
| 338 | *p = a->ob_item[j]; |
| 339 | INCREF(*p); |
| 340 | p++; |
| 341 | } |
| 342 | } |
| 343 | return (object *) np; |
| 344 | } |
| 345 | |
Guido van Rossum | bfe14c5 | 1991-04-16 08:41:06 +0000 | [diff] [blame] | 346 | /* XXX The following function has a bug: don't try assigning a |
| 347 | XXX list object to a slice of itself (e.g., a[:1] = a). */ |
| 348 | |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 349 | static int |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 350 | list_ass_slice(a, ilow, ihigh, v) |
| 351 | listobject *a; |
| 352 | int ilow, ihigh; |
| 353 | object *v; |
| 354 | { |
| 355 | object **item; |
| 356 | int n; /* Size of replacement list */ |
| 357 | int d; /* Change in size */ |
| 358 | int k; /* Loop index */ |
| 359 | #define b ((listobject *)v) |
| 360 | if (v == NULL) |
| 361 | n = 0; |
Guido van Rossum | 32dffaa | 1991-12-24 13:27:34 +0000 | [diff] [blame] | 362 | else if (is_listobject(v)) { |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 363 | n = b->ob_size; |
Guido van Rossum | 32dffaa | 1991-12-24 13:27:34 +0000 | [diff] [blame] | 364 | if (a == b) { |
| 365 | /* Special case "a[i:j] = a" -- copy b first */ |
| 366 | int ret; |
| 367 | v = list_slice(b, 0, n); |
| 368 | ret = list_ass_slice(a, ilow, ihigh, v); |
| 369 | DECREF(v); |
| 370 | return ret; |
| 371 | } |
| 372 | } |
Guido van Rossum | 2a9096b | 1990-10-21 22:15:08 +0000 | [diff] [blame] | 373 | else { |
| 374 | err_badarg(); |
| 375 | return -1; |
| 376 | } |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 377 | if (ilow < 0) |
| 378 | ilow = 0; |
| 379 | else if (ilow > a->ob_size) |
| 380 | ilow = a->ob_size; |
| 381 | if (ihigh < 0) |
| 382 | ihigh = 0; |
| 383 | if (ihigh < ilow) |
| 384 | ihigh = ilow; |
| 385 | else if (ihigh > a->ob_size) |
| 386 | ihigh = a->ob_size; |
| 387 | item = a->ob_item; |
| 388 | d = n - (ihigh-ilow); |
| 389 | if (d <= 0) { /* Delete -d items; DECREF ihigh-ilow items */ |
| 390 | for (k = ilow; k < ihigh; k++) |
| 391 | DECREF(item[k]); |
| 392 | if (d < 0) { |
| 393 | for (/*k = ihigh*/; k < a->ob_size; k++) |
| 394 | item[k+d] = item[k]; |
| 395 | a->ob_size += d; |
| 396 | RESIZE(item, object *, a->ob_size); /* Can't fail */ |
| 397 | a->ob_item = item; |
| 398 | } |
| 399 | } |
| 400 | else { /* Insert d items; DECREF ihigh-ilow items */ |
| 401 | RESIZE(item, object *, a->ob_size + d); |
Guido van Rossum | 2a9096b | 1990-10-21 22:15:08 +0000 | [diff] [blame] | 402 | if (item == NULL) { |
| 403 | err_nomem(); |
| 404 | return -1; |
| 405 | } |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 406 | for (k = a->ob_size; --k >= ihigh; ) |
| 407 | item[k+d] = item[k]; |
| 408 | for (/*k = ihigh-1*/; k >= ilow; --k) |
| 409 | DECREF(item[k]); |
| 410 | a->ob_item = item; |
| 411 | a->ob_size += d; |
| 412 | } |
| 413 | for (k = 0; k < n; k++, ilow++) { |
| 414 | object *w = b->ob_item[k]; |
| 415 | INCREF(w); |
| 416 | item[ilow] = w; |
| 417 | } |
| 418 | return 0; |
| 419 | #undef b |
| 420 | } |
| 421 | |
Guido van Rossum | 4a450d0 | 1991-04-03 19:05:18 +0000 | [diff] [blame] | 422 | static int |
| 423 | list_ass_item(a, i, v) |
| 424 | listobject *a; |
| 425 | int i; |
| 426 | object *v; |
| 427 | { |
| 428 | if (i < 0 || i >= a->ob_size) { |
| 429 | err_setstr(IndexError, "list assignment index out of range"); |
| 430 | return -1; |
| 431 | } |
| 432 | if (v == NULL) |
| 433 | return list_ass_slice(a, i, i+1, v); |
| 434 | INCREF(v); |
| 435 | DECREF(a->ob_item[i]); |
| 436 | a->ob_item[i] = v; |
| 437 | return 0; |
| 438 | } |
| 439 | |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 440 | static object * |
| 441 | ins(self, where, v) |
| 442 | listobject *self; |
| 443 | int where; |
| 444 | object *v; |
| 445 | { |
| 446 | if (ins1(self, where, v) != 0) |
| 447 | return NULL; |
| 448 | INCREF(None); |
| 449 | return None; |
| 450 | } |
| 451 | |
| 452 | static object * |
| 453 | listinsert(self, args) |
| 454 | listobject *self; |
| 455 | object *args; |
| 456 | { |
| 457 | int i; |
| 458 | if (args == NULL || !is_tupleobject(args) || gettuplesize(args) != 2) { |
Guido van Rossum | 2a9096b | 1990-10-21 22:15:08 +0000 | [diff] [blame] | 459 | err_badarg(); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 460 | return NULL; |
| 461 | } |
| 462 | if (!getintarg(gettupleitem(args, 0), &i)) |
| 463 | return NULL; |
| 464 | return ins(self, i, gettupleitem(args, 1)); |
| 465 | } |
| 466 | |
| 467 | static object * |
| 468 | listappend(self, args) |
| 469 | listobject *self; |
| 470 | object *args; |
| 471 | { |
| 472 | return ins(self, (int) self->ob_size, args); |
| 473 | } |
| 474 | |
Guido van Rossum | e10a19e | 1992-08-03 19:05:37 +0000 | [diff] [blame] | 475 | static object *cmpfunc; |
| 476 | |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 477 | static int |
| 478 | cmp(v, w) |
| 479 | char *v, *w; |
| 480 | { |
Guido van Rossum | e10a19e | 1992-08-03 19:05:37 +0000 | [diff] [blame] | 481 | object *t, *res; |
| 482 | long i; |
| 483 | |
| 484 | if (err_occurred()) |
| 485 | return 0; |
| 486 | |
| 487 | if (cmpfunc == NULL) |
| 488 | return cmpobject(* (object **) v, * (object **) w); |
| 489 | |
| 490 | /* Call the user-supplied comparison function */ |
| 491 | t = newtupleobject(2); |
| 492 | if (t == NULL) |
| 493 | return 0; |
| 494 | INCREF(* (object **) v); |
| 495 | settupleitem(t, 0, * (object **) v); |
| 496 | INCREF(* (object **) w); |
| 497 | settupleitem(t, 1, * (object **) w); |
| 498 | res = call_object(cmpfunc, t); |
| 499 | DECREF(t); |
| 500 | if (res == NULL) |
| 501 | return 0; |
| 502 | if (!is_intobject(res)) { |
| 503 | err_setstr(TypeError, "comparison function should return int"); |
| 504 | i = 0; |
| 505 | } |
| 506 | else { |
| 507 | i = getintvalue(res); |
| 508 | if (i < 0) |
| 509 | i = -1; |
| 510 | else if (i > 0) |
| 511 | i = 1; |
| 512 | } |
| 513 | DECREF(res); |
| 514 | return (int) i; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 515 | } |
| 516 | |
| 517 | static object * |
| 518 | listsort(self, args) |
| 519 | listobject *self; |
| 520 | object *args; |
| 521 | { |
Guido van Rossum | e10a19e | 1992-08-03 19:05:37 +0000 | [diff] [blame] | 522 | object *save_cmpfunc; |
| 523 | if (self->ob_size <= 1) { |
| 524 | INCREF(None); |
| 525 | return None; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 526 | } |
Guido van Rossum | e10a19e | 1992-08-03 19:05:37 +0000 | [diff] [blame] | 527 | save_cmpfunc = cmpfunc; |
| 528 | cmpfunc = args; |
| 529 | if (cmpfunc != NULL) { |
| 530 | /* Test the comparison function for obvious errors */ |
| 531 | (void) cmp(&self->ob_item[0], &self->ob_item[1]); |
| 532 | if (err_occurred()) { |
| 533 | cmpfunc = save_cmpfunc; |
| 534 | return NULL; |
| 535 | } |
| 536 | } |
| 537 | qsort((char *)self->ob_item, |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 538 | (int) self->ob_size, sizeof(object *), cmp); |
Guido van Rossum | e10a19e | 1992-08-03 19:05:37 +0000 | [diff] [blame] | 539 | cmpfunc = save_cmpfunc; |
Guido van Rossum | 2a9096b | 1990-10-21 22:15:08 +0000 | [diff] [blame] | 540 | if (err_occurred()) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 541 | return NULL; |
| 542 | INCREF(None); |
| 543 | return None; |
| 544 | } |
| 545 | |
Guido van Rossum | ed98d48 | 1991-03-06 13:07:53 +0000 | [diff] [blame] | 546 | static object * |
| 547 | listreverse(self, args) |
| 548 | listobject *self; |
| 549 | object *args; |
| 550 | { |
| 551 | register object **p, **q; |
| 552 | register object *tmp; |
| 553 | |
| 554 | if (args != NULL) { |
| 555 | err_badarg(); |
| 556 | return NULL; |
| 557 | } |
| 558 | |
| 559 | if (self->ob_size > 1) { |
| 560 | for (p = self->ob_item, q = self->ob_item + self->ob_size - 1; |
| 561 | p < q; p++, q--) { |
| 562 | tmp = *p; |
| 563 | *p = *q; |
| 564 | *q = tmp; |
| 565 | } |
| 566 | } |
| 567 | |
| 568 | INCREF(None); |
| 569 | return None; |
| 570 | } |
| 571 | |
Guido van Rossum | 84c76f5 | 1990-10-30 13:32:20 +0000 | [diff] [blame] | 572 | int |
| 573 | sortlist(v) |
| 574 | object *v; |
| 575 | { |
| 576 | if (v == NULL || !is_listobject(v)) { |
| 577 | err_badcall(); |
| 578 | return -1; |
| 579 | } |
| 580 | v = listsort((listobject *)v, (object *)NULL); |
| 581 | if (v == NULL) |
| 582 | return -1; |
| 583 | DECREF(v); |
| 584 | return 0; |
| 585 | } |
| 586 | |
Guido van Rossum | ed98d48 | 1991-03-06 13:07:53 +0000 | [diff] [blame] | 587 | static object * |
| 588 | listindex(self, args) |
| 589 | listobject *self; |
| 590 | object *args; |
| 591 | { |
| 592 | int i; |
| 593 | |
| 594 | if (args == NULL) { |
| 595 | err_badarg(); |
| 596 | return NULL; |
| 597 | } |
| 598 | for (i = 0; i < self->ob_size; i++) { |
| 599 | if (cmpobject(self->ob_item[i], args) == 0) |
| 600 | return newintobject(i); |
| 601 | } |
Guido van Rossum | 87e7ea7 | 1991-12-10 14:00:03 +0000 | [diff] [blame] | 602 | err_setstr(ValueError, "list.index(x): x not in list"); |
Guido van Rossum | ed98d48 | 1991-03-06 13:07:53 +0000 | [diff] [blame] | 603 | return NULL; |
| 604 | } |
| 605 | |
| 606 | static object * |
Guido van Rossum | e6f7d18 | 1991-10-20 20:20:40 +0000 | [diff] [blame] | 607 | listcount(self, args) |
| 608 | listobject *self; |
| 609 | object *args; |
| 610 | { |
| 611 | int count = 0; |
| 612 | int i; |
| 613 | |
| 614 | if (args == NULL) { |
| 615 | err_badarg(); |
| 616 | return NULL; |
| 617 | } |
| 618 | for (i = 0; i < self->ob_size; i++) { |
| 619 | if (cmpobject(self->ob_item[i], args) == 0) |
| 620 | count++; |
| 621 | } |
| 622 | return newintobject((long)count); |
| 623 | } |
| 624 | |
| 625 | static object * |
Guido van Rossum | ed98d48 | 1991-03-06 13:07:53 +0000 | [diff] [blame] | 626 | listremove(self, args) |
| 627 | listobject *self; |
| 628 | object *args; |
| 629 | { |
| 630 | int i; |
| 631 | |
| 632 | if (args == NULL) { |
| 633 | err_badarg(); |
| 634 | return NULL; |
| 635 | } |
| 636 | for (i = 0; i < self->ob_size; i++) { |
| 637 | if (cmpobject(self->ob_item[i], args) == 0) { |
| 638 | if (list_ass_slice(self, i, i+1, (object *)NULL) != 0) |
| 639 | return NULL; |
| 640 | INCREF(None); |
| 641 | return None; |
| 642 | } |
| 643 | |
| 644 | } |
Guido van Rossum | 87e7ea7 | 1991-12-10 14:00:03 +0000 | [diff] [blame] | 645 | err_setstr(ValueError, "list.remove(x): x not in list"); |
Guido van Rossum | ed98d48 | 1991-03-06 13:07:53 +0000 | [diff] [blame] | 646 | return NULL; |
| 647 | } |
| 648 | |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 649 | static struct methodlist list_methods[] = { |
| 650 | {"append", listappend}, |
Guido van Rossum | e6f7d18 | 1991-10-20 20:20:40 +0000 | [diff] [blame] | 651 | {"count", listcount}, |
Guido van Rossum | ed98d48 | 1991-03-06 13:07:53 +0000 | [diff] [blame] | 652 | {"index", listindex}, |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 653 | {"insert", listinsert}, |
| 654 | {"sort", listsort}, |
Guido van Rossum | ed98d48 | 1991-03-06 13:07:53 +0000 | [diff] [blame] | 655 | {"remove", listremove}, |
| 656 | {"reverse", listreverse}, |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 657 | {NULL, NULL} /* sentinel */ |
| 658 | }; |
| 659 | |
| 660 | static object * |
| 661 | list_getattr(f, name) |
| 662 | listobject *f; |
| 663 | char *name; |
| 664 | { |
| 665 | return findmethod(list_methods, (object *)f, name); |
| 666 | } |
| 667 | |
| 668 | static sequence_methods list_as_sequence = { |
| 669 | list_length, /*sq_length*/ |
| 670 | list_concat, /*sq_concat*/ |
Guido van Rossum | ed98d48 | 1991-03-06 13:07:53 +0000 | [diff] [blame] | 671 | list_repeat, /*sq_repeat*/ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 672 | list_item, /*sq_item*/ |
| 673 | list_slice, /*sq_slice*/ |
| 674 | list_ass_item, /*sq_ass_item*/ |
| 675 | list_ass_slice, /*sq_ass_slice*/ |
| 676 | }; |
| 677 | |
| 678 | typeobject Listtype = { |
| 679 | OB_HEAD_INIT(&Typetype) |
| 680 | 0, |
| 681 | "list", |
| 682 | sizeof(listobject), |
| 683 | 0, |
| 684 | list_dealloc, /*tp_dealloc*/ |
| 685 | list_print, /*tp_print*/ |
| 686 | list_getattr, /*tp_getattr*/ |
| 687 | 0, /*tp_setattr*/ |
| 688 | list_compare, /*tp_compare*/ |
| 689 | list_repr, /*tp_repr*/ |
| 690 | 0, /*tp_as_number*/ |
| 691 | &list_as_sequence, /*tp_as_sequence*/ |
| 692 | 0, /*tp_as_mapping*/ |
| 693 | }; |