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GeezerVison is showing github.com — cpython/Python/getargs.c at main · python/cpython Expand file tree/ Copy pathgetargs.cMore file actions 3002 lines (2704 loc) · 90.5 KB / Copy pathgetargs.cFile metadata and controls3002 lines (2704 loc) · 90.5 KB 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 /* New getargs implementation */ #define PY_CXX_CONST const #include "Python.h" #include "pycore_abstract.h" // _PyNumber_Index() #include "pycore_dict.h" // _PyDict_HasOnlyStringKeys() #include "pycore_modsupport.h" // export _PyArg_NoKeywords() #include "pycore_pylifecycle.h" // _PyArg_Fini #include "pycore_pystate.h" // _Py_IsMainInterpreter() #include "pycore_tuple.h" // _PyTuple_ITEMS() #include "pycore_pyerrors.h" // _Py_CalculateSuggestions() #include "pycore_unicodeobject.h" // _PyUnicode_InternImmortal /* Export Stable ABIs (abi only) */ PyAPI_FUNC(int) _PyArg_Parse_SizeT(PyObject *, const char *, ...); PyAPI_FUNC(int) _PyArg_ParseTuple_SizeT(PyObject *, const char *, ...); PyAPI_FUNC(int) _PyArg_ParseTupleAndKeywords_SizeT(PyObject *, PyObject *, const char *, const char * const *, ...); PyAPI_FUNC(int) _PyArg_VaParse_SizeT(PyObject *, const char *, va_list); PyAPI_FUNC(int) _PyArg_VaParseTupleAndKeywords_SizeT(PyObject *, PyObject *, const char *, const char * const *, va_list); #define FLAG_COMPAT 1 typedef int (*destr_t)(PyObject *, void *); /* Keep track of "objects" that have been allocated or initialized and which will need to be deallocated or cleaned up somehow if overall parsing fails. */ typedef struct { void *item; destr_t destructor; } freelistentry_t; typedef struct { freelistentry_t *entries; int first_available; int entries_malloced; } freelist_t; #define STATIC_FREELIST_ENTRIES 8 /* Forward */ static int vgetargs1_impl(PyObject *args, PyObject *const *stack, Py_ssize_t nargs, const char *format, va_list *p_va, int flags); static int vgetargs1(PyObject *, const char *, va_list *, int); static void seterror(Py_ssize_t, const char *, int *, const char *, const char *); static const char *convertitem(PyObject *, const char **, va_list *, int, int *, char *, size_t, freelist_t *); static const char *converttuple(PyObject *, const char **, va_list *, int, int *, char *, size_t, freelist_t *); static const char *convertsimple(PyObject *, const char **, va_list *, int, char *, size_t, freelist_t *); static Py_ssize_t convertbuffer(PyObject *, const void **p, const char **); static int getbuffer(PyObject *, Py_buffer *, const char**); static int vgetargskeywords(PyObject *args, PyObject *kwargs, const char *format, const char * const *kwlist, va_list *p_va, int flags); static int vgetargskeywords_impl(PyObject *const *args, Py_ssize_t nargs, PyObject *kwargs, PyObject *kwnames, const char *format, const char * const *kwlist, va_list *p_va, int flags); static int vgetargskeywordsfast(PyObject *, PyObject *, struct _PyArg_Parser *, va_list *, int); static int vgetargskeywordsfast_impl(PyObject *const *args, Py_ssize_t nargs, PyObject *keywords, PyObject *kwnames, struct _PyArg_Parser *parser, va_list *p_va, int flags); static const char *skipitem(const char **, va_list *, int); int PyArg_Parse(PyObject *args, const char *format, ...) { int retval; va_list va; va_start(va, format); retval = vgetargs1(args, format, &va, FLAG_COMPAT); va_end(va); return retval; } PyAPI_FUNC(int) _PyArg_Parse_SizeT(PyObject *args, const char *format, ...) { int retval; va_list va; va_start(va, format); retval = vgetargs1(args, format, &va, FLAG_COMPAT); va_end(va); return retval; } int PyArg_ParseTuple(PyObject *args, const char *format, ...) { int retval; va_list va; va_start(va, format); retval = vgetargs1(args, format, &va, 0); va_end(va); return retval; } int _PyArg_ParseTuple_SizeT(PyObject *args, const char *format, ...) { int retval; va_list va; va_start(va, format); retval = vgetargs1(args, format, &va, 0); va_end(va); return retval; } int PyArg_ParseArray(PyObject *const *args, Py_ssize_t nargs, const char *format, ...) { va_list va; va_start(va, format); int retval = vgetargs1_impl(NULL, args, nargs, format, &va, 0); va_end(va); return retval; } int PyArg_ParseArrayAndKeywords(PyObject *const *args, Py_ssize_t nargs, PyObject *kwnames, const char *format, const char * const *kwlist, ...) { if ((args == NULL && nargs != 0) || (kwnames != NULL && !PyTuple_Check(kwnames)) || format == NULL || kwlist == NULL) { PyErr_BadInternalCall(); return 0; } va_list va; va_start(va, kwlist); int retval = vgetargskeywords_impl(args, nargs, NULL, kwnames, format, kwlist, &va, 0); va_end(va); return retval; } int PyArg_VaParse(PyObject *args, const char *format, va_list va) { va_list lva; int retval; va_copy(lva, va); retval = vgetargs1(args, format, &lva, 0); va_end(lva); return retval; } int _PyArg_VaParse_SizeT(PyObject *args, const char *format, va_list va) { va_list lva; int retval; va_copy(lva, va); retval = vgetargs1(args, format, &lva, 0); va_end(lva); return retval; } /* Handle cleanup of allocated memory in case of exception */ static int cleanup_ptr(PyObject *self, void *ptr) { void **pptr = (void **)ptr; PyMem_Free(*pptr); *pptr = NULL; return 0; } static int cleanup_buffer(PyObject *self, void *ptr) { Py_buffer *buf = (Py_buffer *)ptr; if (buf) { PyBuffer_Release(buf); } return 0; } static int addcleanup(void *ptr, freelist_t *freelist, destr_t destructor) { int index; index = freelist->first_available; freelist->first_available += 1; freelist->entries[index].item = ptr; freelist->entries[index].destructor = destructor; return 0; } static int cleanreturn(int retval, freelist_t *freelist) { int index; if (retval == 0) { /* A failure occurred, therefore execute all of the cleanup functions. */ for (index = 0; index < freelist->first_available; ++index) { freelist->entries[index].destructor(NULL, freelist->entries[index].item); } } if (freelist->entries_malloced) PyMem_Free(freelist->entries); return retval; } static int vgetargs1_impl(PyObject *compat_args, PyObject *const *stack, Py_ssize_t nargs, const char *format, va_list *p_va, int flags) { char msgbuf[256]; int levels[32]; const char *fname = NULL; const char *message = NULL; int min = -1; int max = 0; int level = 0; int endfmt = 0; const char *formatsave = format; Py_ssize_t i; const char *msg; int compat = flags & FLAG_COMPAT; freelistentry_t static_entries[STATIC_FREELIST_ENTRIES]; freelist_t freelist; assert(nargs == 0 || stack != NULL); freelist.entries = static_entries; freelist.first_available = 0; freelist.entries_malloced = 0; flags = flags & ~FLAG_COMPAT; while (endfmt == 0) { int c = *format++; switch (c) { case '(': if (level == 0) max++; level++; if (level >= 30) Py_FatalError("too many tuple nesting levels " "in argument format string"); break; case ')': if (level == 0) Py_FatalError("excess ')' in getargs format"); else level--; break; case '\0': endfmt = 1; break; case ':': fname = format; endfmt = 1; break; case ';': message = format; endfmt = 1; break; case '|': if (level == 0) min = max; break; default: if (level == 0) { if (Py_ISALPHA(c)) if (c != 'e') /* skip encoded */ max++; } break; } } if (level != 0) Py_FatalError(/* '(' */ "missing ')' in getargs format"); if (min < 0) min = max; format = formatsave; if (max > STATIC_FREELIST_ENTRIES) { freelist.entries = PyMem_NEW(freelistentry_t, max); if (freelist.entries == NULL) { PyErr_NoMemory(); return 0; } freelist.entries_malloced = 1; } if (compat) { if (max == 0) { if (compat_args == NULL) return 1; PyErr_Format(PyExc_TypeError, "%.200s%s takes no arguments", fname==NULL ? "function" : fname, fname==NULL ? "" : "()"); return cleanreturn(0, &freelist); } else if (min == 1 && max == 1) { if (compat_args == NULL) { PyErr_Format(PyExc_TypeError, "%.200s%s takes at least one argument", fname==NULL ? "function" : fname, fname==NULL ? "" : "()"); return cleanreturn(0, &freelist); } msg = convertitem(compat_args, &format, p_va, flags, levels, msgbuf, sizeof(msgbuf), &freelist); if (msg == NULL) return cleanreturn(1, &freelist); seterror(levels[0], msg, levels+1, fname, message); return cleanreturn(0, &freelist); } else { PyErr_SetString(PyExc_SystemError, "old style getargs format uses new features"); return cleanreturn(0, &freelist); } } if (nargs < min || max < nargs) { if (message == NULL) PyErr_Format(PyExc_TypeError, "%.150s%s takes %s %d argument%s (%zd given)", fname==NULL ? "function" : fname, fname==NULL ? "" : "()", min==max ? "exactly" : nargs < min ? "at least" : "at most", nargs < min ? min : max, (nargs < min ? min : max) == 1 ? "" : "s", nargs); else PyErr_SetString(PyExc_TypeError, message); return cleanreturn(0, &freelist); } for (i = 0; i < nargs; i++) { if (*format == '|') format++; msg = convertitem(stack[i], &format, p_va, flags, levels, msgbuf, sizeof(msgbuf), &freelist); if (msg) { seterror(i+1, msg, levels, fname, message); return cleanreturn(0, &freelist); } } if (*format != '\0' && !Py_ISALPHA(*format) && *format != '(' && *format != '|' && *format != ':' && *format != ';') { PyErr_Format(PyExc_SystemError, "bad format string: %.200s", formatsave); return cleanreturn(0, &freelist); } return cleanreturn(1, &freelist); } static int vgetargs1(PyObject *args, const char *format, va_list *p_va, int flags) { PyObject **stack; Py_ssize_t nargs; if (!(flags & FLAG_COMPAT)) { assert(args != NULL); if (!PyTuple_Check(args)) { PyErr_SetString(PyExc_SystemError, "new style getargs format but argument is not a tuple"); return 0; } stack = _PyTuple_ITEMS(args); nargs = PyTuple_GET_SIZE(args); } else { stack = NULL; nargs = 0; } return vgetargs1_impl(args, stack, nargs, format, p_va, flags); } static void seterror(Py_ssize_t iarg, const char *msg, int *levels, const char *fname, const char *message) { char buf[512]; int i; char *p = buf; if (PyErr_Occurred()) return; else if (message == NULL) { if (fname != NULL) { PyOS_snprintf(p, sizeof(buf), "%.200s() ", fname); p += strlen(p); } if (iarg != 0) { PyOS_snprintf(p, sizeof(buf) - (p - buf), "argument %zd", iarg); i = 0; p += strlen(p); while (i < 32 && levels[i] > 0 && (int)(p-buf) < 220) { PyOS_snprintf(p, sizeof(buf) - (p - buf), ", item %d", levels[i]-1); p += strlen(p); i++; } } else { PyOS_snprintf(p, sizeof(buf) - (p - buf), "argument"); p += strlen(p); } PyOS_snprintf(p, sizeof(buf) - (p - buf), " %.256s", msg); message = buf; } if (msg[0] == '(') { PyErr_SetString(PyExc_SystemError, message); } else { PyErr_SetString(PyExc_TypeError, message); } } /* Convert a tuple argument. On entry, *p_format points to the character _after_ the opening '('. On successful exit, *p_format points to the closing ')'. If successful: *p_format and *p_va are updated, *levels and *msgbuf are untouched, and NULL is returned. If the argument is invalid: *p_format is unchanged, *p_va is undefined, *levels is a 0-terminated list of item numbers, *msgbuf contains an error message, whose format is: "must be <typename1>, not <typename2>", where: <typename1> is the name of the expected type, and <typename2> is the name of the actual type, and msgbuf is returned. */ static const char * converttuple(PyObject *arg, const char **p_format, va_list *p_va, int flags, int *levels, char *msgbuf, size_t bufsize, freelist_t *freelist) { int level = 0; int n = 0; const char *format = *p_format; int i; Py_ssize_t len; int istuple = PyTuple_Check(arg); int mustbetuple = istuple; for (;;) { int c = *format++; if (c == '(') { if (level == 0) n++; level++; } else if (c == ')') { if (level == 0) break; level--; } else if (c == ':' || c == ';' || c == '\0') break; else { if (level == 0 && Py_ISALPHA(c)) { n++; } if (c == 'e' && (*format == 's' || *format == 't')) { format++; continue; } if (!mustbetuple) { switch (c) { case 'y': case 's': case 'z': if (*format != '*') { mustbetuple = 1; } break; case 'S': case 'Y': case 'U': mustbetuple = 1; break; case 'O': if (*format != '&') { mustbetuple = 1; } break; } } } } if (istuple) { /* fallthrough */ } else if (!PySequence_Check(arg) || PyUnicode_Check(arg) || PyBytes_Check(arg) || PyByteArray_Check(arg)) { levels[0] = 0; PyOS_snprintf(msgbuf, bufsize, "must be %d-item tuple, not %.50s", n, arg == Py_None ? "None" : Py_TYPE(arg)->tp_name); return msgbuf; } else { if (mustbetuple) { if (PyErr_WarnFormat(PyExc_DeprecationWarning, 0, "argument must be %d-item tuple, not %T", n, arg)) { return msgbuf; } } len = PySequence_Size(arg); if (len != n) { levels[0] = 0; PyOS_snprintf(msgbuf, bufsize, "must be %s of length %d, not %zd", mustbetuple ? "tuple" : "sequence", n, len); return msgbuf; } arg = PySequence_Tuple(arg); if (arg == NULL) { return msgbuf; } } len = PyTuple_GET_SIZE(arg); if (len != n) { levels[0] = 0; PyOS_snprintf(msgbuf, bufsize, "must be tuple of length %d, not %zd", n, len); if (!istuple) { Py_DECREF(arg); } return msgbuf; } format = *p_format; for (i = 0; i < n; i++) { const char *msg; PyObject *item = PyTuple_GET_ITEM(arg, i); msg = convertitem(item, &format, p_va, flags, levels+1, msgbuf, bufsize, freelist); if (msg != NULL) { levels[0] = i+1; if (!istuple) { Py_DECREF(arg); } return msg; } } *p_format = format; if (!istuple) { Py_DECREF(arg); } return NULL; } /* Convert a single item. */ static const char * convertitem(PyObject *arg, const char **p_format, va_list *p_va, int flags, int *levels, char *msgbuf, size_t bufsize, freelist_t *freelist) { const char *msg; const char *format = *p_format; if (*format == '(' /* ')' */) { format++; msg = converttuple(arg, &format, p_va, flags, levels, msgbuf, bufsize, freelist); if (msg == NULL) format++; } else { msg = convertsimple(arg, &format, p_va, flags, msgbuf, bufsize, freelist); if (msg != NULL) levels[0] = 0; } if (msg == NULL) *p_format = format; return msg; } /* Format an error message generated by convertsimple(). displayname must be UTF-8 encoded. */ void _PyArg_BadArgument(const char *fname, const char *displayname, const char *expected, PyObject *arg) { PyErr_Format(PyExc_TypeError, "%.200s() %.200s must be %.50s, not %.50s", fname, displayname, expected, arg == Py_None ? "None" : Py_TYPE(arg)->tp_name); } static const char * converterr(const char *expected, PyObject *arg, char *msgbuf, size_t bufsize) { assert(expected != NULL); assert(arg != NULL); if (expected[0] == '(') { PyOS_snprintf(msgbuf, bufsize, "%.100s", expected); } else { PyOS_snprintf(msgbuf, bufsize, "must be %.50s, not %.50s", expected, arg == Py_None ? "None" : Py_TYPE(arg)->tp_name); } return msgbuf; } static const char * convertcharerr(const char *expected, const char *what, Py_ssize_t size, char *msgbuf, size_t bufsize) { assert(expected != NULL); PyOS_snprintf(msgbuf, bufsize, "must be %.50s, not %.50s of length %zd", expected, what, size); return msgbuf; } #define CONV_UNICODE "(unicode conversion error)" /* Convert a non-tuple argument. Return NULL if conversion went OK, or a string with a message describing the failure. The message is formatted as "must be <desired type>, not <actual type>". When failing, an exception may or may not have been raised. Don't call if a tuple is expected. When you add new format codes, please don't forget poor skipitem() below. */ static const char * convertsimple(PyObject *arg, const char **p_format, va_list *p_va, int flags, char *msgbuf, size_t bufsize, freelist_t *freelist) { #define RETURN_ERR_OCCURRED return msgbuf const char *format = *p_format; char c = *format++; const char *sarg; switch (c) { case 'b': { /* unsigned byte -- very short int */ unsigned char *p = va_arg(*p_va, unsigned char *); long ival = PyLong_AsLong(arg); if (ival == -1 && PyErr_Occurred()) RETURN_ERR_OCCURRED; else if (ival < 0) { PyErr_SetString(PyExc_OverflowError, "unsigned byte integer is less than minimum"); RETURN_ERR_OCCURRED; } else if (ival > UCHAR_MAX) { PyErr_SetString(PyExc_OverflowError, "unsigned byte integer is greater than maximum"); RETURN_ERR_OCCURRED; } else *p = (unsigned char) ival; break; } case 'B': {/* byte sized bitfield - both signed and unsigned values allowed */ unsigned char *p = va_arg(*p_va, unsigned char *); Py_ssize_t bytes = PyLong_AsNativeBytes(arg, p, sizeof(unsigned char), Py_ASNATIVEBYTES_NATIVE_ENDIAN | Py_ASNATIVEBYTES_ALLOW_INDEX | Py_ASNATIVEBYTES_UNSIGNED_BUFFER); if (bytes < 0) { RETURN_ERR_OCCURRED; } if ((size_t)bytes > sizeof(unsigned char)) { if (PyErr_WarnEx(PyExc_DeprecationWarning, "integer value out of range", 1) < 0) { RETURN_ERR_OCCURRED; } } break; } case 'h': {/* signed short int */ short *p = va_arg(*p_va, short *); long ival = PyLong_AsLong(arg); if (ival == -1 && PyErr_Occurred()) RETURN_ERR_OCCURRED; else if (ival < SHRT_MIN) { PyErr_SetString(PyExc_OverflowError, "signed short integer is less than minimum"); RETURN_ERR_OCCURRED; } else if (ival > SHRT_MAX) { PyErr_SetString(PyExc_OverflowError, "signed short integer is greater than maximum"); RETURN_ERR_OCCURRED; } else *p = (short) ival; break; } case 'H': { /* short int sized bitfield, both signed and unsigned allowed */ unsigned short *p = va_arg(*p_va, unsigned short *); Py_ssize_t bytes = PyLong_AsNativeBytes(arg, p, sizeof(unsigned short), Py_ASNATIVEBYTES_NATIVE_ENDIAN | Py_ASNATIVEBYTES_ALLOW_INDEX | Py_ASNATIVEBYTES_UNSIGNED_BUFFER); if (bytes < 0) { RETURN_ERR_OCCURRED; } if ((size_t)bytes > sizeof(unsigned short)) { if (PyErr_WarnEx(PyExc_DeprecationWarning, "integer value out of range", 1) < 0) { RETURN_ERR_OCCURRED; } } break; } case 'i': {/* signed int */ int *p = va_arg(*p_va, int *); long ival = PyLong_AsLong(arg); if (ival == -1 && PyErr_Occurred()) RETURN_ERR_OCCURRED; else if (ival > INT_MAX) { PyErr_SetString(PyExc_OverflowError, "signed integer is greater than maximum"); RETURN_ERR_OCCURRED; } else if (ival < INT_MIN) { PyErr_SetString(PyExc_OverflowError, "signed integer is less than minimum"); RETURN_ERR_OCCURRED; } else *p = ival; break; } case 'I': { /* int sized bitfield, both signed and unsigned allowed */ unsigned int *p = va_arg(*p_va, unsigned int *); Py_ssize_t bytes = PyLong_AsNativeBytes(arg, p, sizeof(unsigned int), Py_ASNATIVEBYTES_NATIVE_ENDIAN | Py_ASNATIVEBYTES_ALLOW_INDEX | Py_ASNATIVEBYTES_UNSIGNED_BUFFER); if (bytes < 0) { RETURN_ERR_OCCURRED; } if ((size_t)bytes > sizeof(unsigned int)) { if (PyErr_WarnEx(PyExc_DeprecationWarning, "integer value out of range", 1) < 0) { RETURN_ERR_OCCURRED; } } break; } case 'n': /* Py_ssize_t */ { PyObject *iobj; Py_ssize_t *p = va_arg(*p_va, Py_ssize_t *); Py_ssize_t ival = -1; iobj = _PyNumber_Index(arg); if (iobj != NULL) { ival = PyLong_AsSsize_t(iobj); Py_DECREF(iobj); } if (ival == -1 && PyErr_Occurred()) RETURN_ERR_OCCURRED; *p = ival; break; } case 'l': {/* long int */ long *p = va_arg(*p_va, long *); long ival = PyLong_AsLong(arg); if (ival == -1 && PyErr_Occurred()) RETURN_ERR_OCCURRED; else *p = ival; break; } case 'k': { /* long sized bitfield */ unsigned long *p = va_arg(*p_va, unsigned long *); if (!PyIndex_Check(arg)) { return converterr("int", arg, msgbuf, bufsize); } Py_ssize_t bytes = PyLong_AsNativeBytes(arg, p, sizeof(unsigned long), Py_ASNATIVEBYTES_NATIVE_ENDIAN | Py_ASNATIVEBYTES_ALLOW_INDEX | Py_ASNATIVEBYTES_UNSIGNED_BUFFER); if (bytes < 0) { RETURN_ERR_OCCURRED; } if ((size_t)bytes > sizeof(unsigned long)) { if (PyErr_WarnEx(PyExc_DeprecationWarning, "integer value out of range", 1) < 0) { RETURN_ERR_OCCURRED; } } break; } case 'L': {/* long long */ long long *p = va_arg( *p_va, long long * ); long long ival = PyLong_AsLongLong(arg); if (ival == (long long)-1 && PyErr_Occurred()) RETURN_ERR_OCCURRED; else *p = ival; break; } case 'K': { /* long long sized bitfield */ unsigned long long *p = va_arg(*p_va, unsigned long long *); if (!PyIndex_Check(arg)) { return converterr("int", arg, msgbuf, bufsize); } Py_ssize_t bytes = PyLong_AsNativeBytes(arg, p, sizeof(unsigned long long), Py_ASNATIVEBYTES_NATIVE_ENDIAN | Py_ASNATIVEBYTES_ALLOW_INDEX | Py_ASNATIVEBYTES_UNSIGNED_BUFFER); if (bytes < 0) { RETURN_ERR_OCCURRED; } if ((size_t)bytes > sizeof(unsigned long long)) { if (PyErr_WarnEx(PyExc_DeprecationWarning, "integer value out of range", 1) < 0) { RETURN_ERR_OCCURRED; } } break; } case 'f': {/* float */ float *p = va_arg(*p_va, float *); double dval = PyFloat_AsDouble(arg); if (dval == -1.0 && PyErr_Occurred()) RETURN_ERR_OCCURRED; else *p = (float) dval; break; } case 'd': {/* double */ double *p = va_arg(*p_va, double *); double dval = PyFloat_AsDouble(arg); if (dval == -1.0 && PyErr_Occurred()) RETURN_ERR_OCCURRED; else *p = dval; break; } case 'D': {/* complex double */ Py_complex *p = va_arg(*p_va, Py_complex *); Py_complex cval; cval = PyComplex_AsCComplex(arg); if (PyErr_Occurred()) RETURN_ERR_OCCURRED; else *p = cval; break; } case 'c': {/* char */ char *p = va_arg(*p_va, char *); if (PyBytes_Check(arg)) { if (PyBytes_GET_SIZE(arg) != 1) { return convertcharerr("a byte string of length 1", "a bytes object", PyBytes_GET_SIZE(arg), msgbuf, bufsize); } *p = PyBytes_AS_STRING(arg)[0]; } else if (PyByteArray_Check(arg)) { if (PyByteArray_GET_SIZE(arg) != 1) { return convertcharerr("a byte string of length 1", "a bytearray object", PyByteArray_GET_SIZE(arg), msgbuf, bufsize); } *p = PyByteArray_AS_STRING(arg)[0]; } else return converterr("a byte string of length 1", arg, msgbuf, bufsize); break; } case 'C': {/* unicode char */ int *p = va_arg(*p_va, int *); int kind; const void *data; if (!PyUnicode_Check(arg)) return converterr("a unicode character", arg, msgbuf, bufsize); if (PyUnicode_GET_LENGTH(arg) != 1) { return convertcharerr("a unicode character", "a string", PyUnicode_GET_LENGTH(arg), msgbuf, bufsize); } kind = PyUnicode_KIND(arg); data = PyUnicode_DATA(arg); *p = PyUnicode_READ(kind, data, 0); break; } case 'p': {/* boolean *p*redicate */ int *p = va_arg(*p_va, int *); int val = PyObject_IsTrue(arg); if (val > 0) *p = 1; else if (val == 0) *p = 0; else RETURN_ERR_OCCURRED; break; } /* XXX WAAAAH! 's', 'y', 'z', 'u', 'Z', 'e', 'w' codes all need to be cleaned up! */ case 'y': {/* any bytes-like object */ void **p = (void **)va_arg(*p_va, char **); |
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