272 lines
11 KiB
C
272 lines
11 KiB
C
#ifndef Py_CPYTHON_ABSTRACTOBJECT_H
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# error "this header file must not be included directly"
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* === Object Protocol ================================================== */
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#ifdef PY_SSIZE_T_CLEAN
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# define _PyObject_CallMethodId _PyObject_CallMethodId_SizeT
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#endif
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/* Convert keyword arguments from the FASTCALL (stack: C array, kwnames: tuple)
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format to a Python dictionary ("kwargs" dict).
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The type of kwnames keys is not checked. The final function getting
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arguments is responsible to check if all keys are strings, for example using
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PyArg_ParseTupleAndKeywords() or PyArg_ValidateKeywordArguments().
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Duplicate keys are merged using the last value. If duplicate keys must raise
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an exception, the caller is responsible to implement an explicit keys on
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kwnames. */
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PyAPI_FUNC(PyObject *) _PyStack_AsDict(
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PyObject *const *values,
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PyObject *kwnames);
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/* Convert (args, nargs, kwargs: dict) into a (stack, nargs, kwnames: tuple).
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Return 0 on success, raise an exception and return -1 on error.
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Write the new stack into *p_stack. If *p_stack is differen than args, it
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must be released by PyMem_Free().
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The stack uses borrowed references.
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The type of keyword keys is not checked, these checks should be done
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later (ex: _PyArg_ParseStackAndKeywords). */
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PyAPI_FUNC(int) _PyStack_UnpackDict(
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PyObject *const *args,
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Py_ssize_t nargs,
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PyObject *kwargs,
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PyObject *const **p_stack,
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PyObject **p_kwnames);
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/* Suggested size (number of positional arguments) for arrays of PyObject*
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allocated on a C stack to avoid allocating memory on the heap memory. Such
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array is used to pass positional arguments to call functions of the
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_PyObject_FastCall() family.
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The size is chosen to not abuse the C stack and so limit the risk of stack
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overflow. The size is also chosen to allow using the small stack for most
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function calls of the Python standard library. On 64-bit CPU, it allocates
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40 bytes on the stack. */
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#define _PY_FASTCALL_SMALL_STACK 5
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/* Return 1 if callable supports FASTCALL calling convention for positional
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arguments: see _PyObject_FastCallDict() and _PyObject_FastCallKeywords() */
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PyAPI_FUNC(int) _PyObject_HasFastCall(PyObject *callable);
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/* Call the callable object 'callable' with the "fast call" calling convention:
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args is a C array for positional arguments (nargs is the number of
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positional arguments), kwargs is a dictionary for keyword arguments.
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If nargs is equal to zero, args can be NULL. kwargs can be NULL.
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nargs must be greater or equal to zero.
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Return the result on success. Raise an exception and return NULL on
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error. */
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PyAPI_FUNC(PyObject *) _PyObject_FastCallDict(
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PyObject *callable,
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PyObject *const *args,
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Py_ssize_t nargs,
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PyObject *kwargs);
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/* Call the callable object 'callable' with the "fast call" calling convention:
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args is a C array for positional arguments followed by values of
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keyword arguments. Keys of keyword arguments are stored as a tuple
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of strings in kwnames. nargs is the number of positional parameters at
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the beginning of stack. The size of kwnames gives the number of keyword
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values in the stack after positional arguments.
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kwnames must only contains str strings, no subclass, and all keys must
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be unique.
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If nargs is equal to zero and there is no keyword argument (kwnames is
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NULL or its size is zero), args can be NULL.
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Return the result on success. Raise an exception and return NULL on
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error. */
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PyAPI_FUNC(PyObject *) _PyObject_FastCallKeywords(
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PyObject *callable,
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PyObject *const *args,
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Py_ssize_t nargs,
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PyObject *kwnames);
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#define _PyObject_FastCall(func, args, nargs) \
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_PyObject_FastCallDict((func), (args), (nargs), NULL)
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#define _PyObject_CallNoArg(func) \
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_PyObject_FastCallDict((func), NULL, 0, NULL)
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PyAPI_FUNC(PyObject *) _PyObject_Call_Prepend(
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PyObject *callable,
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PyObject *obj,
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PyObject *args,
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PyObject *kwargs);
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PyAPI_FUNC(PyObject *) _PyObject_FastCall_Prepend(
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PyObject *callable,
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PyObject *obj,
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PyObject *const *args,
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Py_ssize_t nargs);
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PyAPI_FUNC(PyObject *) _Py_CheckFunctionResult(PyObject *callable,
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PyObject *result,
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const char *where);
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/* Like PyObject_CallMethod(), but expect a _Py_Identifier*
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as the method name. */
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PyAPI_FUNC(PyObject *) _PyObject_CallMethodId(PyObject *obj,
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_Py_Identifier *name,
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const char *format, ...);
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PyAPI_FUNC(PyObject *) _PyObject_CallMethodId_SizeT(PyObject *obj,
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_Py_Identifier *name,
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const char *format,
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...);
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PyAPI_FUNC(PyObject *) _PyObject_CallMethodIdObjArgs(
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PyObject *obj,
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struct _Py_Identifier *name,
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...);
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PyAPI_FUNC(int) _PyObject_HasLen(PyObject *o);
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/* Guess the size of object 'o' using len(o) or o.__length_hint__().
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If neither of those return a non-negative value, then return the default
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value. If one of the calls fails, this function returns -1. */
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PyAPI_FUNC(Py_ssize_t) PyObject_LengthHint(PyObject *o, Py_ssize_t);
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/* === New Buffer API ============================================ */
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/* Return 1 if the getbuffer function is available, otherwise return 0. */
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#define PyObject_CheckBuffer(obj) \
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(((obj)->ob_type->tp_as_buffer != NULL) && \
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((obj)->ob_type->tp_as_buffer->bf_getbuffer != NULL))
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/* This is a C-API version of the getbuffer function call. It checks
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to make sure object has the required function pointer and issues the
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call.
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Returns -1 and raises an error on failure and returns 0 on success. */
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PyAPI_FUNC(int) PyObject_GetBuffer(PyObject *obj, Py_buffer *view,
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int flags);
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/* Get the memory area pointed to by the indices for the buffer given.
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Note that view->ndim is the assumed size of indices. */
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PyAPI_FUNC(void *) PyBuffer_GetPointer(Py_buffer *view, Py_ssize_t *indices);
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/* Return the implied itemsize of the data-format area from a
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struct-style description. */
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PyAPI_FUNC(int) PyBuffer_SizeFromFormat(const char *);
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/* Implementation in memoryobject.c */
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PyAPI_FUNC(int) PyBuffer_ToContiguous(void *buf, Py_buffer *view,
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Py_ssize_t len, char order);
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PyAPI_FUNC(int) PyBuffer_FromContiguous(Py_buffer *view, void *buf,
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Py_ssize_t len, char order);
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/* Copy len bytes of data from the contiguous chunk of memory
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pointed to by buf into the buffer exported by obj. Return
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0 on success and return -1 and raise a PyBuffer_Error on
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error (i.e. the object does not have a buffer interface or
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it is not working).
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If fort is 'F', then if the object is multi-dimensional,
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then the data will be copied into the array in
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Fortran-style (first dimension varies the fastest). If
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fort is 'C', then the data will be copied into the array
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in C-style (last dimension varies the fastest). If fort
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is 'A', then it does not matter and the copy will be made
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in whatever way is more efficient. */
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PyAPI_FUNC(int) PyObject_CopyData(PyObject *dest, PyObject *src);
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/* Copy the data from the src buffer to the buffer of destination. */
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PyAPI_FUNC(int) PyBuffer_IsContiguous(const Py_buffer *view, char fort);
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/*Fill the strides array with byte-strides of a contiguous
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(Fortran-style if fort is 'F' or C-style otherwise)
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array of the given shape with the given number of bytes
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per element. */
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PyAPI_FUNC(void) PyBuffer_FillContiguousStrides(int ndims,
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Py_ssize_t *shape,
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Py_ssize_t *strides,
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int itemsize,
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char fort);
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/* Fills in a buffer-info structure correctly for an exporter
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that can only share a contiguous chunk of memory of
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"unsigned bytes" of the given length.
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Returns 0 on success and -1 (with raising an error) on error. */
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PyAPI_FUNC(int) PyBuffer_FillInfo(Py_buffer *view, PyObject *o, void *buf,
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Py_ssize_t len, int readonly,
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int flags);
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/* Releases a Py_buffer obtained from getbuffer ParseTuple's "s*". */
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PyAPI_FUNC(void) PyBuffer_Release(Py_buffer *view);
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/* ==== Iterators ================================================ */
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#define PyIter_Check(obj) \
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((obj)->ob_type->tp_iternext != NULL && \
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(obj)->ob_type->tp_iternext != &_PyObject_NextNotImplemented)
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/* === Number Protocol ================================================== */
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#define PyIndex_Check(obj) \
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((obj)->ob_type->tp_as_number != NULL && \
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(obj)->ob_type->tp_as_number->nb_index != NULL)
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/* === Sequence protocol ================================================ */
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/* Assume tp_as_sequence and sq_item exist and that 'i' does not
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need to be corrected for a negative index. */
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#define PySequence_ITEM(o, i)\
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( Py_TYPE(o)->tp_as_sequence->sq_item(o, i) )
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#define PY_ITERSEARCH_COUNT 1
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#define PY_ITERSEARCH_INDEX 2
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#define PY_ITERSEARCH_CONTAINS 3
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/* Iterate over seq.
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Result depends on the operation:
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PY_ITERSEARCH_COUNT: return # of times obj appears in seq; -1 if
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error.
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PY_ITERSEARCH_INDEX: return 0-based index of first occurrence of
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obj in seq; set ValueError and return -1 if none found;
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also return -1 on error.
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PY_ITERSEARCH_CONTAINS: return 1 if obj in seq, else 0; -1 on
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error. */
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PyAPI_FUNC(Py_ssize_t) _PySequence_IterSearch(PyObject *seq,
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PyObject *obj, int operation);
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/* === Mapping protocol ================================================= */
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PyAPI_FUNC(int) _PyObject_RealIsInstance(PyObject *inst, PyObject *cls);
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PyAPI_FUNC(int) _PyObject_RealIsSubclass(PyObject *derived, PyObject *cls);
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PyAPI_FUNC(char *const *) _PySequence_BytesToCharpArray(PyObject* self);
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PyAPI_FUNC(void) _Py_FreeCharPArray(char *const array[]);
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/* For internal use by buffer API functions */
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PyAPI_FUNC(void) _Py_add_one_to_index_F(int nd, Py_ssize_t *index,
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const Py_ssize_t *shape);
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PyAPI_FUNC(void) _Py_add_one_to_index_C(int nd, Py_ssize_t *index,
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const Py_ssize_t *shape);
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/* Convert Python int to Py_ssize_t. Do nothing if the argument is None. */
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PyAPI_FUNC(int) _Py_convert_optional_to_ssize_t(PyObject *, void *);
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#ifdef __cplusplus
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}
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#endif
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