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3a4f66707e
All call sites pass NULL for `recode_encoding`, so this path is completely untested. That's been true since before Python 3.0. It adds significant complexity to this logic, so it's best to take it out. All call sites now have a literal NULL, and that's been true since commit768921cf3eliminated a conditional (`foo ? bar : NULL`) at the call site in Python/ast.c where we're parsing a bytes literal. But even before then, that condition `foo` had been a constant since unadorned string literals started meaning Unicode, in commit572dbf8f1aka v3.0a1~1035 . The `unicode` parameter is already unused, so mark it as unused too. The code that acted on it was also taken out before Python 3.0, in commit8d30cc014aka v3.0a1~1031 . The function (PyBytes_DecodeEscape) is exposed in the API, but it's never been documented.
243 lines
9.3 KiB
C
243 lines
9.3 KiB
C
#ifndef Py_LONGOBJECT_H
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#define Py_LONGOBJECT_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* Long (arbitrary precision) integer object interface */
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typedef struct _longobject PyLongObject; /* Revealed in longintrepr.h */
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PyAPI_DATA(PyTypeObject) PyLong_Type;
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#define PyLong_Check(op) \
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PyType_FastSubclass(Py_TYPE(op), Py_TPFLAGS_LONG_SUBCLASS)
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#define PyLong_CheckExact(op) (Py_TYPE(op) == &PyLong_Type)
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PyAPI_FUNC(PyObject *) PyLong_FromLong(long);
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PyAPI_FUNC(PyObject *) PyLong_FromUnsignedLong(unsigned long);
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PyAPI_FUNC(PyObject *) PyLong_FromSize_t(size_t);
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PyAPI_FUNC(PyObject *) PyLong_FromSsize_t(Py_ssize_t);
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PyAPI_FUNC(PyObject *) PyLong_FromDouble(double);
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PyAPI_FUNC(long) PyLong_AsLong(PyObject *);
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PyAPI_FUNC(long) PyLong_AsLongAndOverflow(PyObject *, int *);
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PyAPI_FUNC(Py_ssize_t) PyLong_AsSsize_t(PyObject *);
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PyAPI_FUNC(size_t) PyLong_AsSize_t(PyObject *);
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PyAPI_FUNC(unsigned long) PyLong_AsUnsignedLong(PyObject *);
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PyAPI_FUNC(unsigned long) PyLong_AsUnsignedLongMask(PyObject *);
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#ifndef Py_LIMITED_API
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PyAPI_FUNC(int) _PyLong_AsInt(PyObject *);
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#endif
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PyAPI_FUNC(PyObject *) PyLong_GetInfo(void);
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/* It may be useful in the future. I've added it in the PyInt -> PyLong
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cleanup to keep the extra information. [CH] */
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#define PyLong_AS_LONG(op) PyLong_AsLong(op)
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/* Issue #1983: pid_t can be longer than a C long on some systems */
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#if !defined(SIZEOF_PID_T) || SIZEOF_PID_T == SIZEOF_INT
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#define _Py_PARSE_PID "i"
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#define PyLong_FromPid PyLong_FromLong
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#define PyLong_AsPid PyLong_AsLong
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#elif SIZEOF_PID_T == SIZEOF_LONG
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#define _Py_PARSE_PID "l"
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#define PyLong_FromPid PyLong_FromLong
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#define PyLong_AsPid PyLong_AsLong
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#elif defined(SIZEOF_LONG_LONG) && SIZEOF_PID_T == SIZEOF_LONG_LONG
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#define _Py_PARSE_PID "L"
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#define PyLong_FromPid PyLong_FromLongLong
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#define PyLong_AsPid PyLong_AsLongLong
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#else
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#error "sizeof(pid_t) is neither sizeof(int), sizeof(long) or sizeof(long long)"
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#endif /* SIZEOF_PID_T */
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#if SIZEOF_VOID_P == SIZEOF_INT
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# define _Py_PARSE_INTPTR "i"
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# define _Py_PARSE_UINTPTR "I"
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#elif SIZEOF_VOID_P == SIZEOF_LONG
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# define _Py_PARSE_INTPTR "l"
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# define _Py_PARSE_UINTPTR "k"
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#elif defined(SIZEOF_LONG_LONG) && SIZEOF_VOID_P == SIZEOF_LONG_LONG
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# define _Py_PARSE_INTPTR "L"
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# define _Py_PARSE_UINTPTR "K"
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#else
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# error "void* different in size from int, long and long long"
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#endif /* SIZEOF_VOID_P */
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#ifndef Py_LIMITED_API
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PyAPI_FUNC(int) _PyLong_UnsignedShort_Converter(PyObject *, void *);
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PyAPI_FUNC(int) _PyLong_UnsignedInt_Converter(PyObject *, void *);
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PyAPI_FUNC(int) _PyLong_UnsignedLong_Converter(PyObject *, void *);
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PyAPI_FUNC(int) _PyLong_UnsignedLongLong_Converter(PyObject *, void *);
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PyAPI_FUNC(int) _PyLong_Size_t_Converter(PyObject *, void *);
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#endif
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/* Used by Python/mystrtoul.c, _PyBytes_FromHex(),
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_PyBytes_DecodeEscape(), etc. */
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#ifndef Py_LIMITED_API
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PyAPI_DATA(unsigned char) _PyLong_DigitValue[256];
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#endif
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/* _PyLong_Frexp returns a double x and an exponent e such that the
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true value is approximately equal to x * 2**e. e is >= 0. x is
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0.0 if and only if the input is 0 (in which case, e and x are both
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zeroes); otherwise, 0.5 <= abs(x) < 1.0. On overflow, which is
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possible if the number of bits doesn't fit into a Py_ssize_t, sets
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OverflowError and returns -1.0 for x, 0 for e. */
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#ifndef Py_LIMITED_API
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PyAPI_FUNC(double) _PyLong_Frexp(PyLongObject *a, Py_ssize_t *e);
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#endif
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PyAPI_FUNC(double) PyLong_AsDouble(PyObject *);
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PyAPI_FUNC(PyObject *) PyLong_FromVoidPtr(void *);
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PyAPI_FUNC(void *) PyLong_AsVoidPtr(PyObject *);
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PyAPI_FUNC(PyObject *) PyLong_FromLongLong(long long);
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PyAPI_FUNC(PyObject *) PyLong_FromUnsignedLongLong(unsigned long long);
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PyAPI_FUNC(long long) PyLong_AsLongLong(PyObject *);
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PyAPI_FUNC(unsigned long long) PyLong_AsUnsignedLongLong(PyObject *);
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PyAPI_FUNC(unsigned long long) PyLong_AsUnsignedLongLongMask(PyObject *);
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PyAPI_FUNC(long long) PyLong_AsLongLongAndOverflow(PyObject *, int *);
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PyAPI_FUNC(PyObject *) PyLong_FromString(const char *, char **, int);
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#ifndef Py_LIMITED_API
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Py_DEPRECATED(3.3)
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PyAPI_FUNC(PyObject *) PyLong_FromUnicode(Py_UNICODE*, Py_ssize_t, int);
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PyAPI_FUNC(PyObject *) PyLong_FromUnicodeObject(PyObject *u, int base);
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PyAPI_FUNC(PyObject *) _PyLong_FromBytes(const char *, Py_ssize_t, int);
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#endif
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#ifndef Py_LIMITED_API
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/* _PyLong_Sign. Return 0 if v is 0, -1 if v < 0, +1 if v > 0.
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v must not be NULL, and must be a normalized long.
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There are no error cases.
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*/
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PyAPI_FUNC(int) _PyLong_Sign(PyObject *v);
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/* _PyLong_NumBits. Return the number of bits needed to represent the
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absolute value of a long. For example, this returns 1 for 1 and -1, 2
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for 2 and -2, and 2 for 3 and -3. It returns 0 for 0.
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v must not be NULL, and must be a normalized long.
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(size_t)-1 is returned and OverflowError set if the true result doesn't
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fit in a size_t.
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*/
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PyAPI_FUNC(size_t) _PyLong_NumBits(PyObject *v);
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/* _PyLong_DivmodNear. Given integers a and b, compute the nearest
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integer q to the exact quotient a / b, rounding to the nearest even integer
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in the case of a tie. Return (q, r), where r = a - q*b. The remainder r
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will satisfy abs(r) <= abs(b)/2, with equality possible only if q is
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even.
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*/
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PyAPI_FUNC(PyObject *) _PyLong_DivmodNear(PyObject *, PyObject *);
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/* _PyLong_FromByteArray: View the n unsigned bytes as a binary integer in
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base 256, and return a Python int with the same numeric value.
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If n is 0, the integer is 0. Else:
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If little_endian is 1/true, bytes[n-1] is the MSB and bytes[0] the LSB;
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else (little_endian is 0/false) bytes[0] is the MSB and bytes[n-1] the
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LSB.
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If is_signed is 0/false, view the bytes as a non-negative integer.
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If is_signed is 1/true, view the bytes as a 2's-complement integer,
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non-negative if bit 0x80 of the MSB is clear, negative if set.
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Error returns:
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+ Return NULL with the appropriate exception set if there's not
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enough memory to create the Python int.
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*/
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PyAPI_FUNC(PyObject *) _PyLong_FromByteArray(
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const unsigned char* bytes, size_t n,
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int little_endian, int is_signed);
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/* _PyLong_AsByteArray: Convert the least-significant 8*n bits of long
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v to a base-256 integer, stored in array bytes. Normally return 0,
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return -1 on error.
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If little_endian is 1/true, store the MSB at bytes[n-1] and the LSB at
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bytes[0]; else (little_endian is 0/false) store the MSB at bytes[0] and
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the LSB at bytes[n-1].
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If is_signed is 0/false, it's an error if v < 0; else (v >= 0) n bytes
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are filled and there's nothing special about bit 0x80 of the MSB.
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If is_signed is 1/true, bytes is filled with the 2's-complement
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representation of v's value. Bit 0x80 of the MSB is the sign bit.
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Error returns (-1):
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+ is_signed is 0 and v < 0. TypeError is set in this case, and bytes
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isn't altered.
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+ n isn't big enough to hold the full mathematical value of v. For
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example, if is_signed is 0 and there are more digits in the v than
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fit in n; or if is_signed is 1, v < 0, and n is just 1 bit shy of
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being large enough to hold a sign bit. OverflowError is set in this
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case, but bytes holds the least-significant n bytes of the true value.
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*/
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PyAPI_FUNC(int) _PyLong_AsByteArray(PyLongObject* v,
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unsigned char* bytes, size_t n,
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int little_endian, int is_signed);
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/* _PyLong_FromNbInt: Convert the given object to a PyLongObject
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using the nb_int slot, if available. Raise TypeError if either the
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nb_int slot is not available or the result of the call to nb_int
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returns something not of type int.
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*/
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PyAPI_FUNC(PyObject *) _PyLong_FromNbInt(PyObject *);
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/* Convert the given object to a PyLongObject using the nb_index or
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nb_int slots, if available (the latter is deprecated).
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Raise TypeError if either nb_index and nb_int slots are not
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available or the result of the call to nb_index or nb_int
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returns something not of type int.
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Should be replaced with PyNumber_Index after the end of the
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deprecation period.
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*/
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PyAPI_FUNC(PyObject *) _PyLong_FromNbIndexOrNbInt(PyObject *);
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/* _PyLong_Format: Convert the long to a string object with given base,
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appending a base prefix of 0[box] if base is 2, 8 or 16. */
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PyAPI_FUNC(PyObject *) _PyLong_Format(PyObject *obj, int base);
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PyAPI_FUNC(int) _PyLong_FormatWriter(
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_PyUnicodeWriter *writer,
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PyObject *obj,
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int base,
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int alternate);
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PyAPI_FUNC(char*) _PyLong_FormatBytesWriter(
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_PyBytesWriter *writer,
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char *str,
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PyObject *obj,
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int base,
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int alternate);
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/* Format the object based on the format_spec, as defined in PEP 3101
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(Advanced String Formatting). */
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PyAPI_FUNC(int) _PyLong_FormatAdvancedWriter(
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_PyUnicodeWriter *writer,
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PyObject *obj,
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PyObject *format_spec,
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Py_ssize_t start,
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Py_ssize_t end);
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#endif /* Py_LIMITED_API */
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/* These aren't really part of the int object, but they're handy. The
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functions are in Python/mystrtoul.c.
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*/
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PyAPI_FUNC(unsigned long) PyOS_strtoul(const char *, char **, int);
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PyAPI_FUNC(long) PyOS_strtol(const char *, char **, int);
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#ifndef Py_LIMITED_API
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/* For use by the gcd function in mathmodule.c */
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PyAPI_FUNC(PyObject *) _PyLong_GCD(PyObject *, PyObject *);
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#endif /* !Py_LIMITED_API */
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#ifndef Py_LIMITED_API
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PyAPI_DATA(PyObject *) _PyLong_Zero;
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PyAPI_DATA(PyObject *) _PyLong_One;
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PyAPI_FUNC(PyObject *) _PyLong_Rshift(PyObject *, size_t);
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PyAPI_FUNC(PyObject *) _PyLong_Lshift(PyObject *, size_t);
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#endif
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#ifdef __cplusplus
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}
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#endif
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#endif /* !Py_LONGOBJECT_H */
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