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 | /* Module support implementation */ |
| 26 | |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 27 | #include "allobjects.h" |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 28 | #include "modsupport.h" |
| 29 | #include "import.h" |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 30 | |
Guido van Rossum | 922cfad | 1992-01-27 16:47:03 +0000 | [diff] [blame] | 31 | #ifdef HAVE_PROTOTYPES |
| 32 | #define USE_STDARG |
| 33 | #endif |
| 34 | |
| 35 | #ifdef USE_STDARG |
| 36 | #include <stdarg.h> |
| 37 | #else |
| 38 | #include <varargs.h> |
| 39 | #endif |
| 40 | |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 41 | |
| 42 | object * |
| 43 | initmodule(name, methods) |
| 44 | char *name; |
| 45 | struct methodlist *methods; |
| 46 | { |
| 47 | object *m, *d, *v; |
| 48 | struct methodlist *ml; |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 49 | char namebuf[256]; |
| 50 | if ((m = add_module(name)) == NULL) { |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 51 | fprintf(stderr, "initializing module: %s\n", name); |
| 52 | fatal("can't create a module"); |
| 53 | } |
| 54 | d = getmoduledict(m); |
| 55 | for (ml = methods; ml->ml_name != NULL; ml++) { |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 56 | sprintf(namebuf, "%s.%s", name, ml->ml_name); |
| 57 | v = newmethodobject(strdup(namebuf), ml->ml_meth, |
Guido van Rossum | c060229 | 1991-12-16 13:07:24 +0000 | [diff] [blame] | 58 | (object *)NULL, ml->ml_varargs); |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 59 | /* XXX The strdup'ed memory is never freed */ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 60 | if (v == NULL || dictinsert(d, ml->ml_name, v) != 0) { |
| 61 | fprintf(stderr, "initializing module: %s\n", name); |
| 62 | fatal("can't initialize module"); |
| 63 | } |
| 64 | DECREF(v); |
| 65 | } |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 66 | return m; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 67 | } |
| 68 | |
| 69 | |
Guido van Rossum | 922cfad | 1992-01-27 16:47:03 +0000 | [diff] [blame] | 70 | /* Generic argument list parser */ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 71 | |
Guido van Rossum | 922cfad | 1992-01-27 16:47:03 +0000 | [diff] [blame] | 72 | static int do_arg PROTO((object *arg, char** p_format, va_list *p_va)); |
| 73 | static int |
| 74 | do_arg(arg, p_format, p_va) |
| 75 | object *arg; |
| 76 | char** p_format; |
| 77 | va_list *p_va; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 78 | { |
Guido van Rossum | 922cfad | 1992-01-27 16:47:03 +0000 | [diff] [blame] | 79 | char *format = *p_format; |
| 80 | va_list va = *p_va; |
| 81 | |
| 82 | if (arg == NULL) |
| 83 | return 0; /* Incomplete tuple or list */ |
| 84 | |
| 85 | switch (*format++) { |
| 86 | |
| 87 | case '('/*')'*/: /* tuple, distributed over C parameters */ { |
| 88 | int i, n; |
| 89 | if (!is_tupleobject(arg)) |
| 90 | return 0; |
| 91 | n = gettuplesize(arg); |
| 92 | for (i = 0; i < n; i++) { |
| 93 | if (!do_arg(gettupleitem(arg, i), &format, &va)) |
| 94 | return 0; |
| 95 | } |
| 96 | if (*format++ != /*'('*/')') |
| 97 | return 0; |
| 98 | break; |
| 99 | } |
| 100 | |
| 101 | case 'h': /* short int */ { |
| 102 | short *p = va_arg(va, short *); |
| 103 | if (is_intobject(arg)) |
| 104 | *p = getintvalue(arg); |
| 105 | else |
| 106 | return 0; |
| 107 | break; |
| 108 | } |
| 109 | |
| 110 | case 'i': /* int */ { |
| 111 | int *p = va_arg(va, int *); |
| 112 | if (is_intobject(arg)) |
| 113 | *p = getintvalue(arg); |
| 114 | else |
| 115 | return 0; |
| 116 | break; |
| 117 | } |
| 118 | |
| 119 | case 'l': /* long int */ { |
| 120 | long *p = va_arg(va, long *); |
| 121 | if (is_intobject(arg)) |
| 122 | *p = getintvalue(arg); |
| 123 | else |
| 124 | return 0; |
| 125 | break; |
| 126 | } |
| 127 | |
| 128 | case 'f': /* float */ { |
| 129 | float *p = va_arg(va, float *); |
| 130 | if (is_floatobject(arg)) |
| 131 | *p = getfloatvalue(arg); |
| 132 | else if (is_intobject(arg)) |
| 133 | *p = (float)getintvalue(arg); |
| 134 | else |
| 135 | return 0; |
| 136 | break; |
| 137 | } |
| 138 | |
| 139 | case 'd': /* double */ { |
| 140 | double *p = va_arg(va, double *); |
| 141 | if (is_floatobject(arg)) |
| 142 | *p = getfloatvalue(arg); |
| 143 | else if (is_intobject(arg)) |
| 144 | *p = (double)getintvalue(arg); |
| 145 | else |
| 146 | return 0; |
| 147 | break; |
| 148 | } |
| 149 | |
| 150 | case 'c': /* char */ { |
| 151 | char *p = va_arg(va, char *); |
| 152 | if (is_stringobject(arg) && getstringsize(arg) == 1) |
| 153 | *p = getstringvalue(arg)[0]; |
| 154 | else |
| 155 | return 0; |
| 156 | break; |
| 157 | } |
| 158 | |
| 159 | case 's': /* string */ { |
| 160 | char **p = va_arg(va, char **); |
| 161 | if (is_stringobject(arg)) |
| 162 | *p = getstringvalue(arg); |
| 163 | else |
| 164 | return 0; |
| 165 | if (*format == '#') { |
| 166 | int *q = va_arg(va, int *); |
| 167 | *q = getstringsize(arg); |
| 168 | format++; |
| 169 | } |
| 170 | break; |
| 171 | } |
| 172 | |
| 173 | case 'z': /* string, may be NULL (None) */ { |
| 174 | char **p = va_arg(va, char **); |
| 175 | if (arg == None) |
| 176 | *p = 0; |
| 177 | else if (is_stringobject(arg)) |
| 178 | *p = getstringvalue(arg); |
| 179 | else |
| 180 | return 0; |
| 181 | if (*format == '#') { |
| 182 | int *q = va_arg(va, int *); |
| 183 | if (arg == None) |
| 184 | *q = 0; |
| 185 | else |
| 186 | *q = getstringsize(arg); |
| 187 | format++; |
| 188 | } |
| 189 | break; |
| 190 | } |
| 191 | |
| 192 | case 'S': /* string object */ { |
| 193 | object **p = va_arg(va, object **); |
| 194 | if (is_stringobject(arg)) |
| 195 | *p = arg; |
| 196 | else |
| 197 | return 0; |
| 198 | break; |
| 199 | } |
| 200 | |
| 201 | case 'O': /* object */ { |
| 202 | object **p = va_arg(va, object **); |
| 203 | *p = arg; |
| 204 | break; |
| 205 | } |
| 206 | |
| 207 | default: |
| 208 | fprintf(stderr, "bad do_arg format: x%x '%c'\n", |
| 209 | format[-1], format[-1]); |
| 210 | return 0; |
| 211 | |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 212 | } |
Guido van Rossum | 922cfad | 1992-01-27 16:47:03 +0000 | [diff] [blame] | 213 | |
| 214 | *p_va = va; |
| 215 | *p_format = format; |
| 216 | |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 217 | return 1; |
| 218 | } |
| 219 | |
Guido van Rossum | 922cfad | 1992-01-27 16:47:03 +0000 | [diff] [blame] | 220 | #ifdef USE_STDARG |
Guido van Rossum | 292bb8e | 1992-03-27 17:23:29 +0000 | [diff] [blame] | 221 | /* VARARGS2 */ |
Guido van Rossum | 922cfad | 1992-01-27 16:47:03 +0000 | [diff] [blame] | 222 | int getargs(object *arg, char *format, ...) |
| 223 | #else |
Guido van Rossum | 292bb8e | 1992-03-27 17:23:29 +0000 | [diff] [blame] | 224 | /* VARARGS */ |
Guido van Rossum | 922cfad | 1992-01-27 16:47:03 +0000 | [diff] [blame] | 225 | int getargs(va_alist) va_dcl |
| 226 | #endif |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 227 | { |
Guido van Rossum | 922cfad | 1992-01-27 16:47:03 +0000 | [diff] [blame] | 228 | char *f; |
| 229 | int ok; |
| 230 | va_list va; |
| 231 | #ifdef USE_STDARG |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 232 | |
Guido van Rossum | 922cfad | 1992-01-27 16:47:03 +0000 | [diff] [blame] | 233 | va_start(va, format); |
| 234 | #else |
| 235 | object *arg; |
| 236 | char *format; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 237 | |
Guido van Rossum | 922cfad | 1992-01-27 16:47:03 +0000 | [diff] [blame] | 238 | va_start(va); |
| 239 | arg = va_arg(va, object *); |
| 240 | format = va_arg(va, char *); |
| 241 | #endif |
| 242 | if (*format == '\0') { |
| 243 | va_end(va); |
| 244 | if (arg != NULL) { |
| 245 | err_setstr(TypeError, "no arguments needed"); |
| 246 | return 0; |
| 247 | } |
Guido van Rossum | c5da350 | 1991-09-10 14:56:32 +0000 | [diff] [blame] | 248 | return 1; |
| 249 | } |
Guido van Rossum | 922cfad | 1992-01-27 16:47:03 +0000 | [diff] [blame] | 250 | |
| 251 | f = format; |
| 252 | ok = do_arg(arg, &f, &va) && *f == '\0'; |
| 253 | va_end(va); |
| 254 | if (!ok) { |
| 255 | char buf[256]; |
| 256 | sprintf(buf, "bad argument list (format '%s')", format); |
| 257 | err_setstr(TypeError, buf); |
Guido van Rossum | c5da350 | 1991-09-10 14:56:32 +0000 | [diff] [blame] | 258 | } |
Guido van Rossum | 922cfad | 1992-01-27 16:47:03 +0000 | [diff] [blame] | 259 | return ok; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 260 | } |
| 261 | |
| 262 | int |
| 263 | getlongtuplearg(args, a, n) |
| 264 | object *args; |
| 265 | long *a; /* [n] */ |
| 266 | int n; |
| 267 | { |
| 268 | int i; |
| 269 | if (!is_tupleobject(args) || gettuplesize(args) != n) { |
| 270 | return err_badarg(); |
| 271 | } |
| 272 | for (i = 0; i < n; i++) { |
| 273 | object *v = gettupleitem(args, i); |
| 274 | if (!is_intobject(v)) { |
| 275 | return err_badarg(); |
| 276 | } |
| 277 | a[i] = getintvalue(v); |
| 278 | } |
| 279 | return 1; |
| 280 | } |
| 281 | |
| 282 | int |
| 283 | getshorttuplearg(args, a, n) |
| 284 | object *args; |
| 285 | short *a; /* [n] */ |
| 286 | int n; |
| 287 | { |
| 288 | int i; |
| 289 | if (!is_tupleobject(args) || gettuplesize(args) != n) { |
| 290 | return err_badarg(); |
| 291 | } |
| 292 | for (i = 0; i < n; i++) { |
| 293 | object *v = gettupleitem(args, i); |
| 294 | if (!is_intobject(v)) { |
| 295 | return err_badarg(); |
| 296 | } |
| 297 | a[i] = getintvalue(v); |
| 298 | } |
| 299 | return 1; |
| 300 | } |
| 301 | |
| 302 | int |
| 303 | getlonglistarg(args, a, n) |
| 304 | object *args; |
| 305 | long *a; /* [n] */ |
| 306 | int n; |
| 307 | { |
| 308 | int i; |
| 309 | if (!is_listobject(args) || getlistsize(args) != n) { |
| 310 | return err_badarg(); |
| 311 | } |
| 312 | for (i = 0; i < n; i++) { |
| 313 | object *v = getlistitem(args, i); |
| 314 | if (!is_intobject(v)) { |
| 315 | return err_badarg(); |
| 316 | } |
| 317 | a[i] = getintvalue(v); |
| 318 | } |
| 319 | return 1; |
| 320 | } |
| 321 | |
| 322 | int |
| 323 | getshortlistarg(args, a, n) |
| 324 | object *args; |
| 325 | short *a; /* [n] */ |
| 326 | int n; |
| 327 | { |
| 328 | int i; |
| 329 | if (!is_listobject(args) || getlistsize(args) != n) { |
| 330 | return err_badarg(); |
| 331 | } |
| 332 | for (i = 0; i < n; i++) { |
| 333 | object *v = getlistitem(args, i); |
| 334 | if (!is_intobject(v)) { |
| 335 | return err_badarg(); |
| 336 | } |
| 337 | a[i] = getintvalue(v); |
| 338 | } |
| 339 | return 1; |
| 340 | } |
Guido van Rossum | 3cfe6fa | 1992-04-13 10:48:55 +0000 | [diff] [blame^] | 341 | |
| 342 | static object * |
| 343 | do_mkval(char **p_format, va_list *p_va) { |
| 344 | object *v; |
| 345 | |
| 346 | switch (*(*p_format)++) { |
| 347 | |
| 348 | case '(': |
| 349 | { |
| 350 | int n = 0; |
| 351 | char *p = *p_format; |
| 352 | int level = 0; |
| 353 | int i; |
| 354 | while (level > 0 || *p != ')') { |
| 355 | if (*p == '\0') { |
| 356 | err_setstr(SystemError, "missing ')' in mkvalue format"); |
| 357 | return NULL; |
| 358 | } |
| 359 | else if (*p == '(') { |
| 360 | if (level == 0) |
| 361 | n++; |
| 362 | level++; |
| 363 | } |
| 364 | else if (*p == ')') |
| 365 | level--; |
| 366 | else if (level == 0 && *p != '#') |
| 367 | n++; |
| 368 | p++; |
| 369 | } |
| 370 | v = newtupleobject(n); |
| 371 | if (v == NULL) |
| 372 | break; |
| 373 | for (i = 0; i < n; i++) { |
| 374 | object *w = do_mkval(p_format, p_va); |
| 375 | if (w == NULL) { |
| 376 | DECREF(v); |
| 377 | v = NULL; |
| 378 | break; |
| 379 | } |
| 380 | settupleitem(v, i, w); |
| 381 | } |
| 382 | if (v != NULL && *(*p_format)++ != ')') { |
| 383 | /* "Cannot happen" */ |
| 384 | err_setstr(SystemError, "inconsistent format in mkvalue???"); |
| 385 | DECREF(v); |
| 386 | v = NULL; |
| 387 | } |
| 388 | } |
| 389 | break; |
| 390 | |
| 391 | case 'h': |
| 392 | v = newintobject((long)va_arg(*p_va, short)); |
| 393 | break; |
| 394 | |
| 395 | case 'i': |
| 396 | v = newintobject((long)va_arg(*p_va, int)); |
| 397 | break; |
| 398 | |
| 399 | case 'l': |
| 400 | v = newintobject((long)va_arg(*p_va, long)); |
| 401 | break; |
| 402 | |
| 403 | case 'f': |
| 404 | v = newfloatobject((double)va_arg(*p_va, float)); |
| 405 | break; |
| 406 | |
| 407 | case 'd': |
| 408 | v = newfloatobject((double)va_arg(*p_va, double)); |
| 409 | break; |
| 410 | |
| 411 | case 's': |
| 412 | case 'z': |
| 413 | { |
| 414 | char *str = va_arg(*p_va, char *); |
| 415 | int n; |
| 416 | if (**p_format == '#') { |
| 417 | ++*p_format; |
| 418 | n = va_arg(*p_va, int); |
| 419 | } |
| 420 | else |
| 421 | n = -1; |
| 422 | if (str == NULL) { |
| 423 | v = None; |
| 424 | INCREF(v); |
| 425 | } |
| 426 | else { |
| 427 | if (n < 0) |
| 428 | n = strlen(str); |
| 429 | v = newsizedstringobject(str, n); |
| 430 | } |
| 431 | } |
| 432 | break; |
| 433 | |
| 434 | case 'S': |
| 435 | case 'O': |
| 436 | v = va_arg(*p_va, object *); |
| 437 | if (v == NULL) { |
| 438 | if (!err_occurred()) |
| 439 | err_setstr(SystemError, "NULL object passed to mkvalue"); |
| 440 | } |
| 441 | else |
| 442 | INCREF(v); |
| 443 | break; |
| 444 | |
| 445 | default: |
| 446 | err_setstr(SystemError, "bad format char passed to mkvalue"); |
| 447 | v = NULL; |
| 448 | break; |
| 449 | |
| 450 | } |
| 451 | |
| 452 | return v; |
| 453 | } |
| 454 | |
| 455 | object * |
| 456 | mkvalue(char *format, ...) |
| 457 | { |
| 458 | char *fmt = format; |
| 459 | object *v; |
| 460 | va_list p; |
| 461 | va_start(p, format); |
| 462 | v = do_mkval(&fmt, &p); |
| 463 | va_end(p); |
| 464 | if (v == NULL) |
| 465 | fprintf(stderr, "mkvalue: format = \"%s\" \"%s\"\n", format, fmt); |
| 466 | return v; |
| 467 | } |