Restoring authorship annotation for <shadchin@yandex-team.ru>. Commit 2 of 2.

1 files changed, 384 insertions, 384 deletions

diff --git a/contrib/tools/python3/src/Include/cpython/abstract.h b/contrib/tools/python3/src/Include/cpython/abstract.h
index 9a3737c42f..0f1304d26a 100644
--- a/contrib/tools/python3/src/Include/cpython/abstract.h
+++ b/contrib/tools/python3/src/Include/cpython/abstract.h
@@ -1,384 +1,384 @@
-#ifndef Py_CPYTHON_ABSTRACTOBJECT_H 
-#  error "this header file must not be included directly" 
-#endif 
- 
-#ifdef __cplusplus 
-extern "C" { 
-#endif 
- 
-/* === Object Protocol ================================================== */ 
- 
-#ifdef PY_SSIZE_T_CLEAN 
-#  define _PyObject_CallMethodId _PyObject_CallMethodId_SizeT 
-#endif 
- 
-/* Convert keyword arguments from the FASTCALL (stack: C array, kwnames: tuple) 
-   format to a Python dictionary ("kwargs" dict). 
- 
-   The type of kwnames keys is not checked. The final function getting 
-   arguments is responsible to check if all keys are strings, for example using 
-   PyArg_ParseTupleAndKeywords() or PyArg_ValidateKeywordArguments(). 
- 
-   Duplicate keys are merged using the last value. If duplicate keys must raise 
-   an exception, the caller is responsible to implement an explicit keys on 
-   kwnames. */ 
-PyAPI_FUNC(PyObject *) _PyStack_AsDict( 
-    PyObject *const *values, 
-    PyObject *kwnames); 
- 
-/* Suggested size (number of positional arguments) for arrays of PyObject* 
-   allocated on a C stack to avoid allocating memory on the heap memory. Such 
-   array is used to pass positional arguments to call functions of the 
-   PyObject_Vectorcall() family. 
- 
-   The size is chosen to not abuse the C stack and so limit the risk of stack 
-   overflow. The size is also chosen to allow using the small stack for most 
-   function calls of the Python standard library. On 64-bit CPU, it allocates 
-   40 bytes on the stack. */ 
-#define _PY_FASTCALL_SMALL_STACK 5 
- 
-PyAPI_FUNC(PyObject *) _Py_CheckFunctionResult( 
-    PyThreadState *tstate, 
-    PyObject *callable, 
-    PyObject *result, 
-    const char *where); 
- 
-/* === Vectorcall protocol (PEP 590) ============================= */ 
- 
-/* Call callable using tp_call. Arguments are like PyObject_Vectorcall() 
-   or PyObject_FastCallDict() (both forms are supported), 
-   except that nargs is plainly the number of arguments without flags. */ 
-PyAPI_FUNC(PyObject *) _PyObject_MakeTpCall( 
-    PyThreadState *tstate, 
-    PyObject *callable, 
-    PyObject *const *args, Py_ssize_t nargs, 
-    PyObject *keywords); 
- 
-#define PY_VECTORCALL_ARGUMENTS_OFFSET ((size_t)1 << (8 * sizeof(size_t) - 1)) 
- 
-static inline Py_ssize_t 
-PyVectorcall_NARGS(size_t n) 
-{ 
-    return n & ~PY_VECTORCALL_ARGUMENTS_OFFSET; 
-} 
- 
-static inline vectorcallfunc 
-PyVectorcall_Function(PyObject *callable) 
-{ 
-    PyTypeObject *tp; 
-    Py_ssize_t offset; 
-    vectorcallfunc ptr; 
- 
-    assert(callable != NULL); 
-    tp = Py_TYPE(callable); 
-    if (!PyType_HasFeature(tp, Py_TPFLAGS_HAVE_VECTORCALL)) { 
-        return NULL; 
-    } 
-    assert(PyCallable_Check(callable)); 
-    offset = tp->tp_vectorcall_offset; 
-    assert(offset > 0); 
-    memcpy(&ptr, (char *) callable + offset, sizeof(ptr)); 
-    return ptr; 
-} 
- 
-/* Call the callable object 'callable' with the "vectorcall" calling 
-   convention. 
- 
-   args is a C array for positional arguments. 
- 
-   nargsf is the number of positional arguments plus optionally the flag 
-   PY_VECTORCALL_ARGUMENTS_OFFSET which means that the caller is allowed to 
-   modify args[-1]. 
- 
-   kwnames is a tuple of keyword names. The values of the keyword arguments 
-   are stored in "args" after the positional arguments (note that the number 
-   of keyword arguments does not change nargsf). kwnames can also be NULL if 
-   there are no keyword arguments. 
- 
-   keywords must only contain strings and all keys must be unique. 
- 
-   Return the result on success. Raise an exception and return NULL on 
-   error. */ 
-static inline PyObject * 
-_PyObject_VectorcallTstate(PyThreadState *tstate, PyObject *callable, 
-                           PyObject *const *args, size_t nargsf, 
-                           PyObject *kwnames) 
-{ 
-    vectorcallfunc func; 
-    PyObject *res; 
- 
-    assert(kwnames == NULL || PyTuple_Check(kwnames)); 
-    assert(args != NULL || PyVectorcall_NARGS(nargsf) == 0); 
- 
-    func = PyVectorcall_Function(callable); 
-    if (func == NULL) { 
-        Py_ssize_t nargs = PyVectorcall_NARGS(nargsf); 
-        return _PyObject_MakeTpCall(tstate, callable, args, nargs, kwnames); 
-    } 
-    res = func(callable, args, nargsf, kwnames); 
-    return _Py_CheckFunctionResult(tstate, callable, res, NULL); 
-} 
- 
-static inline PyObject * 
-PyObject_Vectorcall(PyObject *callable, PyObject *const *args, 
-                     size_t nargsf, PyObject *kwnames) 
-{ 
-    PyThreadState *tstate = PyThreadState_GET(); 
-    return _PyObject_VectorcallTstate(tstate, callable, 
-                                      args, nargsf, kwnames); 
-} 
- 
-// Backwards compatibility aliases for API that was provisional in Python 3.8 
-#define _PyObject_Vectorcall PyObject_Vectorcall 
-#define _PyObject_VectorcallMethod PyObject_VectorcallMethod 
-#define _PyObject_FastCallDict PyObject_VectorcallDict 
-#define _PyVectorcall_Function PyVectorcall_Function 
-#define _PyObject_CallOneArg PyObject_CallOneArg 
-#define _PyObject_CallMethodNoArgs PyObject_CallMethodNoArgs 
-#define _PyObject_CallMethodOneArg PyObject_CallMethodOneArg 
- 
-/* Same as PyObject_Vectorcall except that keyword arguments are passed as 
-   dict, which may be NULL if there are no keyword arguments. */ 
-PyAPI_FUNC(PyObject *) PyObject_VectorcallDict( 
-    PyObject *callable, 
-    PyObject *const *args, 
-    size_t nargsf, 
-    PyObject *kwargs); 
- 
-/* Call "callable" (which must support vectorcall) with positional arguments 
-   "tuple" and keyword arguments "dict". "dict" may also be NULL */ 
-PyAPI_FUNC(PyObject *) PyVectorcall_Call(PyObject *callable, PyObject *tuple, PyObject *dict); 
- 
-static inline PyObject * 
-_PyObject_FastCallTstate(PyThreadState *tstate, PyObject *func, PyObject *const *args, Py_ssize_t nargs) 
-{ 
-    return _PyObject_VectorcallTstate(tstate, func, args, (size_t)nargs, NULL); 
-} 
- 
-/* Same as PyObject_Vectorcall except without keyword arguments */ 
-static inline PyObject * 
-_PyObject_FastCall(PyObject *func, PyObject *const *args, Py_ssize_t nargs) 
-{ 
-    PyThreadState *tstate = PyThreadState_GET(); 
-    return _PyObject_FastCallTstate(tstate, func, args, nargs); 
-} 
- 
-/* Call a callable without any arguments 
-   Private static inline function variant of public function 
-   PyObject_CallNoArgs(). */ 
-static inline PyObject * 
-_PyObject_CallNoArg(PyObject *func) { 
-    PyThreadState *tstate = PyThreadState_GET(); 
-    return _PyObject_VectorcallTstate(tstate, func, NULL, 0, NULL); 
-} 
- 
-static inline PyObject * 
-PyObject_CallOneArg(PyObject *func, PyObject *arg) 
-{ 
-    PyObject *_args[2]; 
-    PyObject **args; 
-    PyThreadState *tstate; 
-    size_t nargsf; 
- 
-    assert(arg != NULL); 
-    args = _args + 1;  // For PY_VECTORCALL_ARGUMENTS_OFFSET 
-    args[0] = arg; 
-    tstate = PyThreadState_GET(); 
-    nargsf = 1 | PY_VECTORCALL_ARGUMENTS_OFFSET; 
-    return _PyObject_VectorcallTstate(tstate, func, args, nargsf, NULL); 
-} 
- 
-PyAPI_FUNC(PyObject *) PyObject_VectorcallMethod( 
-    PyObject *name, PyObject *const *args, 
-    size_t nargsf, PyObject *kwnames); 
- 
-static inline PyObject * 
-PyObject_CallMethodNoArgs(PyObject *self, PyObject *name) 
-{ 
-    return PyObject_VectorcallMethod(name, &self, 
-           1 | PY_VECTORCALL_ARGUMENTS_OFFSET, NULL); 
-} 
- 
-static inline PyObject * 
-PyObject_CallMethodOneArg(PyObject *self, PyObject *name, PyObject *arg) 
-{ 
-    PyObject *args[2] = {self, arg}; 
- 
-    assert(arg != NULL); 
-    return PyObject_VectorcallMethod(name, args, 
-           2 | PY_VECTORCALL_ARGUMENTS_OFFSET, NULL); 
-} 
- 
-/* Like PyObject_CallMethod(), but expect a _Py_Identifier* 
-   as the method name. */ 
-PyAPI_FUNC(PyObject *) _PyObject_CallMethodId(PyObject *obj, 
-                                              _Py_Identifier *name, 
-                                              const char *format, ...); 
- 
-PyAPI_FUNC(PyObject *) _PyObject_CallMethodId_SizeT(PyObject *obj, 
-                                                    _Py_Identifier *name, 
-                                                    const char *format, 
-                                                    ...); 
- 
-PyAPI_FUNC(PyObject *) _PyObject_CallMethodIdObjArgs( 
-    PyObject *obj, 
-    struct _Py_Identifier *name, 
-    ...); 
- 
-static inline PyObject * 
-_PyObject_VectorcallMethodId( 
-    _Py_Identifier *name, PyObject *const *args, 
-    size_t nargsf, PyObject *kwnames) 
-{ 
-    PyObject *oname = _PyUnicode_FromId(name); /* borrowed */ 
-    if (!oname) { 
-        return NULL; 
-    } 
-    return PyObject_VectorcallMethod(oname, args, nargsf, kwnames); 
-} 
- 
-static inline PyObject * 
-_PyObject_CallMethodIdNoArgs(PyObject *self, _Py_Identifier *name) 
-{ 
-    return _PyObject_VectorcallMethodId(name, &self, 
-           1 | PY_VECTORCALL_ARGUMENTS_OFFSET, NULL); 
-} 
- 
-static inline PyObject * 
-_PyObject_CallMethodIdOneArg(PyObject *self, _Py_Identifier *name, PyObject *arg) 
-{ 
-    PyObject *args[2] = {self, arg}; 
- 
-    assert(arg != NULL); 
-    return _PyObject_VectorcallMethodId(name, args, 
-           2 | PY_VECTORCALL_ARGUMENTS_OFFSET, NULL); 
-} 
- 
-PyAPI_FUNC(int) _PyObject_HasLen(PyObject *o); 
- 
-/* Guess the size of object 'o' using len(o) or o.__length_hint__(). 
-   If neither of those return a non-negative value, then return the default 
-   value.  If one of the calls fails, this function returns -1. */ 
-PyAPI_FUNC(Py_ssize_t) PyObject_LengthHint(PyObject *o, Py_ssize_t); 
- 
-/* === New Buffer API ============================================ */ 
- 
-/* Return 1 if the getbuffer function is available, otherwise return 0. */ 
-PyAPI_FUNC(int) PyObject_CheckBuffer(PyObject *obj); 
- 
-/* This is a C-API version of the getbuffer function call.  It checks 
-   to make sure object has the required function pointer and issues the 
-   call. 
- 
-   Returns -1 and raises an error on failure and returns 0 on success. */ 
-PyAPI_FUNC(int) PyObject_GetBuffer(PyObject *obj, Py_buffer *view, 
-                                   int flags); 
- 
-/* Get the memory area pointed to by the indices for the buffer given. 
-   Note that view->ndim is the assumed size of indices. */ 
-PyAPI_FUNC(void *) PyBuffer_GetPointer(Py_buffer *view, Py_ssize_t *indices); 
- 
-/* Return the implied itemsize of the data-format area from a 
-   struct-style description. */ 
-PyAPI_FUNC(Py_ssize_t) PyBuffer_SizeFromFormat(const char *format); 
- 
-/* Implementation in memoryobject.c */ 
-PyAPI_FUNC(int) PyBuffer_ToContiguous(void *buf, Py_buffer *view, 
-                                      Py_ssize_t len, char order); 
- 
-PyAPI_FUNC(int) PyBuffer_FromContiguous(Py_buffer *view, void *buf, 
-                                        Py_ssize_t len, char order); 
- 
-/* Copy len bytes of data from the contiguous chunk of memory 
-   pointed to by buf into the buffer exported by obj.  Return 
-   0 on success and return -1 and raise a PyBuffer_Error on 
-   error (i.e. the object does not have a buffer interface or 
-   it is not working). 
- 
-   If fort is 'F', then if the object is multi-dimensional, 
-   then the data will be copied into the array in 
-   Fortran-style (first dimension varies the fastest).  If 
-   fort is 'C', then the data will be copied into the array 
-   in C-style (last dimension varies the fastest).  If fort 
-   is 'A', then it does not matter and the copy will be made 
-   in whatever way is more efficient. */ 
-PyAPI_FUNC(int) PyObject_CopyData(PyObject *dest, PyObject *src); 
- 
-/* Copy the data from the src buffer to the buffer of destination. */ 
-PyAPI_FUNC(int) PyBuffer_IsContiguous(const Py_buffer *view, char fort); 
- 
-/*Fill the strides array with byte-strides of a contiguous 
-  (Fortran-style if fort is 'F' or C-style otherwise) 
-  array of the given shape with the given number of bytes 
-  per element. */ 
-PyAPI_FUNC(void) PyBuffer_FillContiguousStrides(int ndims, 
-                                               Py_ssize_t *shape, 
-                                               Py_ssize_t *strides, 
-                                               int itemsize, 
-                                               char fort); 
- 
-/* Fills in a buffer-info structure correctly for an exporter 
-   that can only share a contiguous chunk of memory of 
-   "unsigned bytes" of the given length. 
- 
-   Returns 0 on success and -1 (with raising an error) on error. */ 
-PyAPI_FUNC(int) PyBuffer_FillInfo(Py_buffer *view, PyObject *o, void *buf, 
-                                  Py_ssize_t len, int readonly, 
-                                  int flags); 
- 
-/* Releases a Py_buffer obtained from getbuffer ParseTuple's "s*". */ 
-PyAPI_FUNC(void) PyBuffer_Release(Py_buffer *view); 
- 
-/* ==== Iterators ================================================ */ 
- 
-#define PyIter_Check(obj) \ 
-    (Py_TYPE(obj)->tp_iternext != NULL && \ 
-     Py_TYPE(obj)->tp_iternext != &_PyObject_NextNotImplemented) 
- 
-/* === Sequence protocol ================================================ */ 
- 
-/* Assume tp_as_sequence and sq_item exist and that 'i' does not 
-   need to be corrected for a negative index. */ 
-#define PySequence_ITEM(o, i)\ 
-    ( Py_TYPE(o)->tp_as_sequence->sq_item(o, i) ) 
- 
-#define PY_ITERSEARCH_COUNT    1 
-#define PY_ITERSEARCH_INDEX    2 
-#define PY_ITERSEARCH_CONTAINS 3 
- 
-/* Iterate over seq. 
- 
-   Result depends on the operation: 
- 
-   PY_ITERSEARCH_COUNT:  return # of times obj appears in seq; -1 if 
-     error. 
-   PY_ITERSEARCH_INDEX:  return 0-based index of first occurrence of 
-     obj in seq; set ValueError and return -1 if none found; 
-     also return -1 on error. 
-   PY_ITERSEARCH_CONTAINS:  return 1 if obj in seq, else 0; -1 on 
-     error. */ 
-PyAPI_FUNC(Py_ssize_t) _PySequence_IterSearch(PyObject *seq, 
-                                              PyObject *obj, int operation); 
- 
-/* === Mapping protocol ================================================= */ 
- 
-PyAPI_FUNC(int) _PyObject_RealIsInstance(PyObject *inst, PyObject *cls); 
- 
-PyAPI_FUNC(int) _PyObject_RealIsSubclass(PyObject *derived, PyObject *cls); 
- 
-PyAPI_FUNC(char *const *) _PySequence_BytesToCharpArray(PyObject* self); 
- 
-PyAPI_FUNC(void) _Py_FreeCharPArray(char *const array[]); 
- 
-/* For internal use by buffer API functions */ 
-PyAPI_FUNC(void) _Py_add_one_to_index_F(int nd, Py_ssize_t *index, 
-                                        const Py_ssize_t *shape); 
-PyAPI_FUNC(void) _Py_add_one_to_index_C(int nd, Py_ssize_t *index, 
-                                        const Py_ssize_t *shape); 
- 
-/* Convert Python int to Py_ssize_t. Do nothing if the argument is None. */ 
-PyAPI_FUNC(int) _Py_convert_optional_to_ssize_t(PyObject *, void *); 
- 
-#ifdef __cplusplus 
-} 
-#endif 
+#ifndef Py_CPYTHON_ABSTRACTOBJECT_H
+#  error "this header file must not be included directly"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* === Object Protocol ================================================== */
+
+#ifdef PY_SSIZE_T_CLEAN
+#  define _PyObject_CallMethodId _PyObject_CallMethodId_SizeT
+#endif
+
+/* Convert keyword arguments from the FASTCALL (stack: C array, kwnames: tuple)
+   format to a Python dictionary ("kwargs" dict).
+
+   The type of kwnames keys is not checked. The final function getting
+   arguments is responsible to check if all keys are strings, for example using
+   PyArg_ParseTupleAndKeywords() or PyArg_ValidateKeywordArguments().
+
+   Duplicate keys are merged using the last value. If duplicate keys must raise
+   an exception, the caller is responsible to implement an explicit keys on
+   kwnames. */
+PyAPI_FUNC(PyObject *) _PyStack_AsDict(
+    PyObject *const *values,
+    PyObject *kwnames);
+
+/* Suggested size (number of positional arguments) for arrays of PyObject*
+   allocated on a C stack to avoid allocating memory on the heap memory. Such
+   array is used to pass positional arguments to call functions of the
+   PyObject_Vectorcall() family.
+
+   The size is chosen to not abuse the C stack and so limit the risk of stack
+   overflow. The size is also chosen to allow using the small stack for most
+   function calls of the Python standard library. On 64-bit CPU, it allocates
+   40 bytes on the stack. */
+#define _PY_FASTCALL_SMALL_STACK 5
+
+PyAPI_FUNC(PyObject *) _Py_CheckFunctionResult(
+    PyThreadState *tstate,
+    PyObject *callable,
+    PyObject *result,
+    const char *where);
+
+/* === Vectorcall protocol (PEP 590) ============================= */
+
+/* Call callable using tp_call. Arguments are like PyObject_Vectorcall()
+   or PyObject_FastCallDict() (both forms are supported),
+   except that nargs is plainly the number of arguments without flags. */
+PyAPI_FUNC(PyObject *) _PyObject_MakeTpCall(
+    PyThreadState *tstate,
+    PyObject *callable,
+    PyObject *const *args, Py_ssize_t nargs,
+    PyObject *keywords);
+
+#define PY_VECTORCALL_ARGUMENTS_OFFSET ((size_t)1 << (8 * sizeof(size_t) - 1))
+
+static inline Py_ssize_t
+PyVectorcall_NARGS(size_t n)
+{
+    return n & ~PY_VECTORCALL_ARGUMENTS_OFFSET;
+}
+
+static inline vectorcallfunc
+PyVectorcall_Function(PyObject *callable)
+{
+    PyTypeObject *tp;
+    Py_ssize_t offset;
+    vectorcallfunc ptr;
+
+    assert(callable != NULL);
+    tp = Py_TYPE(callable);
+    if (!PyType_HasFeature(tp, Py_TPFLAGS_HAVE_VECTORCALL)) {
+        return NULL;
+    }
+    assert(PyCallable_Check(callable));
+    offset = tp->tp_vectorcall_offset;
+    assert(offset > 0);
+    memcpy(&ptr, (char *) callable + offset, sizeof(ptr));
+    return ptr;
+}
+
+/* Call the callable object 'callable' with the "vectorcall" calling
+   convention.
+
+   args is a C array for positional arguments.
+
+   nargsf is the number of positional arguments plus optionally the flag
+   PY_VECTORCALL_ARGUMENTS_OFFSET which means that the caller is allowed to
+   modify args[-1].
+
+   kwnames is a tuple of keyword names. The values of the keyword arguments
+   are stored in "args" after the positional arguments (note that the number
+   of keyword arguments does not change nargsf). kwnames can also be NULL if
+   there are no keyword arguments.
+
+   keywords must only contain strings and all keys must be unique.
+
+   Return the result on success. Raise an exception and return NULL on
+   error. */
+static inline PyObject *
+_PyObject_VectorcallTstate(PyThreadState *tstate, PyObject *callable,
+                           PyObject *const *args, size_t nargsf,
+                           PyObject *kwnames)
+{
+    vectorcallfunc func;
+    PyObject *res;
+
+    assert(kwnames == NULL || PyTuple_Check(kwnames));
+    assert(args != NULL || PyVectorcall_NARGS(nargsf) == 0);
+
+    func = PyVectorcall_Function(callable);
+    if (func == NULL) {
+        Py_ssize_t nargs = PyVectorcall_NARGS(nargsf);
+        return _PyObject_MakeTpCall(tstate, callable, args, nargs, kwnames);
+    }
+    res = func(callable, args, nargsf, kwnames);
+    return _Py_CheckFunctionResult(tstate, callable, res, NULL);
+}
+
+static inline PyObject *
+PyObject_Vectorcall(PyObject *callable, PyObject *const *args,
+                     size_t nargsf, PyObject *kwnames)
+{
+    PyThreadState *tstate = PyThreadState_GET();
+    return _PyObject_VectorcallTstate(tstate, callable,
+                                      args, nargsf, kwnames);
+}
+
+// Backwards compatibility aliases for API that was provisional in Python 3.8
+#define _PyObject_Vectorcall PyObject_Vectorcall
+#define _PyObject_VectorcallMethod PyObject_VectorcallMethod
+#define _PyObject_FastCallDict PyObject_VectorcallDict
+#define _PyVectorcall_Function PyVectorcall_Function
+#define _PyObject_CallOneArg PyObject_CallOneArg
+#define _PyObject_CallMethodNoArgs PyObject_CallMethodNoArgs
+#define _PyObject_CallMethodOneArg PyObject_CallMethodOneArg
+
+/* Same as PyObject_Vectorcall except that keyword arguments are passed as
+   dict, which may be NULL if there are no keyword arguments. */
+PyAPI_FUNC(PyObject *) PyObject_VectorcallDict(
+    PyObject *callable,
+    PyObject *const *args,
+    size_t nargsf,
+    PyObject *kwargs);
+
+/* Call "callable" (which must support vectorcall) with positional arguments
+   "tuple" and keyword arguments "dict". "dict" may also be NULL */
+PyAPI_FUNC(PyObject *) PyVectorcall_Call(PyObject *callable, PyObject *tuple, PyObject *dict);
+
+static inline PyObject *
+_PyObject_FastCallTstate(PyThreadState *tstate, PyObject *func, PyObject *const *args, Py_ssize_t nargs)
+{
+    return _PyObject_VectorcallTstate(tstate, func, args, (size_t)nargs, NULL);
+}
+
+/* Same as PyObject_Vectorcall except without keyword arguments */
+static inline PyObject *
+_PyObject_FastCall(PyObject *func, PyObject *const *args, Py_ssize_t nargs)
+{
+    PyThreadState *tstate = PyThreadState_GET();
+    return _PyObject_FastCallTstate(tstate, func, args, nargs);
+}
+
+/* Call a callable without any arguments
+   Private static inline function variant of public function
+   PyObject_CallNoArgs(). */
+static inline PyObject *
+_PyObject_CallNoArg(PyObject *func) {
+    PyThreadState *tstate = PyThreadState_GET();
+    return _PyObject_VectorcallTstate(tstate, func, NULL, 0, NULL);
+}
+
+static inline PyObject *
+PyObject_CallOneArg(PyObject *func, PyObject *arg)
+{
+    PyObject *_args[2];
+    PyObject **args;
+    PyThreadState *tstate;
+    size_t nargsf;
+
+    assert(arg != NULL);
+    args = _args + 1;  // For PY_VECTORCALL_ARGUMENTS_OFFSET
+    args[0] = arg;
+    tstate = PyThreadState_GET();
+    nargsf = 1 | PY_VECTORCALL_ARGUMENTS_OFFSET;
+    return _PyObject_VectorcallTstate(tstate, func, args, nargsf, NULL);
+}
+
+PyAPI_FUNC(PyObject *) PyObject_VectorcallMethod(
+    PyObject *name, PyObject *const *args,
+    size_t nargsf, PyObject *kwnames);
+
+static inline PyObject *
+PyObject_CallMethodNoArgs(PyObject *self, PyObject *name)
+{
+    return PyObject_VectorcallMethod(name, &self,
+           1 | PY_VECTORCALL_ARGUMENTS_OFFSET, NULL);
+}
+
+static inline PyObject *
+PyObject_CallMethodOneArg(PyObject *self, PyObject *name, PyObject *arg)
+{
+    PyObject *args[2] = {self, arg};
+
+    assert(arg != NULL);
+    return PyObject_VectorcallMethod(name, args,
+           2 | PY_VECTORCALL_ARGUMENTS_OFFSET, NULL);
+}
+
+/* Like PyObject_CallMethod(), but expect a _Py_Identifier*
+   as the method name. */
+PyAPI_FUNC(PyObject *) _PyObject_CallMethodId(PyObject *obj,
+                                              _Py_Identifier *name,
+                                              const char *format, ...);
+
+PyAPI_FUNC(PyObject *) _PyObject_CallMethodId_SizeT(PyObject *obj,
+                                                    _Py_Identifier *name,
+                                                    const char *format,
+                                                    ...);
+
+PyAPI_FUNC(PyObject *) _PyObject_CallMethodIdObjArgs(
+    PyObject *obj,
+    struct _Py_Identifier *name,
+    ...);
+
+static inline PyObject *
+_PyObject_VectorcallMethodId(
+    _Py_Identifier *name, PyObject *const *args,
+    size_t nargsf, PyObject *kwnames)
+{
+    PyObject *oname = _PyUnicode_FromId(name); /* borrowed */
+    if (!oname) {
+        return NULL;
+    }
+    return PyObject_VectorcallMethod(oname, args, nargsf, kwnames);
+}
+
+static inline PyObject *
+_PyObject_CallMethodIdNoArgs(PyObject *self, _Py_Identifier *name)
+{
+    return _PyObject_VectorcallMethodId(name, &self,
+           1 | PY_VECTORCALL_ARGUMENTS_OFFSET, NULL);
+}
+
+static inline PyObject *
+_PyObject_CallMethodIdOneArg(PyObject *self, _Py_Identifier *name, PyObject *arg)
+{
+    PyObject *args[2] = {self, arg};
+
+    assert(arg != NULL);
+    return _PyObject_VectorcallMethodId(name, args,
+           2 | PY_VECTORCALL_ARGUMENTS_OFFSET, NULL);
+}
+
+PyAPI_FUNC(int) _PyObject_HasLen(PyObject *o);
+
+/* Guess the size of object 'o' using len(o) or o.__length_hint__().
+   If neither of those return a non-negative value, then return the default
+   value.  If one of the calls fails, this function returns -1. */
+PyAPI_FUNC(Py_ssize_t) PyObject_LengthHint(PyObject *o, Py_ssize_t);
+
+/* === New Buffer API ============================================ */
+
+/* Return 1 if the getbuffer function is available, otherwise return 0. */
+PyAPI_FUNC(int) PyObject_CheckBuffer(PyObject *obj);
+
+/* This is a C-API version of the getbuffer function call.  It checks
+   to make sure object has the required function pointer and issues the
+   call.
+
+   Returns -1 and raises an error on failure and returns 0 on success. */
+PyAPI_FUNC(int) PyObject_GetBuffer(PyObject *obj, Py_buffer *view,
+                                   int flags);
+
+/* Get the memory area pointed to by the indices for the buffer given.
+   Note that view->ndim is the assumed size of indices. */
+PyAPI_FUNC(void *) PyBuffer_GetPointer(Py_buffer *view, Py_ssize_t *indices);
+
+/* Return the implied itemsize of the data-format area from a
+   struct-style description. */
+PyAPI_FUNC(Py_ssize_t) PyBuffer_SizeFromFormat(const char *format);
+
+/* Implementation in memoryobject.c */
+PyAPI_FUNC(int) PyBuffer_ToContiguous(void *buf, Py_buffer *view,
+                                      Py_ssize_t len, char order);
+
+PyAPI_FUNC(int) PyBuffer_FromContiguous(Py_buffer *view, void *buf,
+                                        Py_ssize_t len, char order);
+
+/* Copy len bytes of data from the contiguous chunk of memory
+   pointed to by buf into the buffer exported by obj.  Return
+   0 on success and return -1 and raise a PyBuffer_Error on
+   error (i.e. the object does not have a buffer interface or
+   it is not working).
+
+   If fort is 'F', then if the object is multi-dimensional,
+   then the data will be copied into the array in
+   Fortran-style (first dimension varies the fastest).  If
+   fort is 'C', then the data will be copied into the array
+   in C-style (last dimension varies the fastest).  If fort
+   is 'A', then it does not matter and the copy will be made
+   in whatever way is more efficient. */
+PyAPI_FUNC(int) PyObject_CopyData(PyObject *dest, PyObject *src);
+
+/* Copy the data from the src buffer to the buffer of destination. */
+PyAPI_FUNC(int) PyBuffer_IsContiguous(const Py_buffer *view, char fort);
+
+/*Fill the strides array with byte-strides of a contiguous
+  (Fortran-style if fort is 'F' or C-style otherwise)
+  array of the given shape with the given number of bytes
+  per element. */
+PyAPI_FUNC(void) PyBuffer_FillContiguousStrides(int ndims,
+                                               Py_ssize_t *shape,
+                                               Py_ssize_t *strides,
+                                               int itemsize,
+                                               char fort);
+
+/* Fills in a buffer-info structure correctly for an exporter
+   that can only share a contiguous chunk of memory of
+   "unsigned bytes" of the given length.
+
+   Returns 0 on success and -1 (with raising an error) on error. */
+PyAPI_FUNC(int) PyBuffer_FillInfo(Py_buffer *view, PyObject *o, void *buf,
+                                  Py_ssize_t len, int readonly,
+                                  int flags);
+
+/* Releases a Py_buffer obtained from getbuffer ParseTuple's "s*". */
+PyAPI_FUNC(void) PyBuffer_Release(Py_buffer *view);
+
+/* ==== Iterators ================================================ */
+
+#define PyIter_Check(obj) \
+    (Py_TYPE(obj)->tp_iternext != NULL && \
+     Py_TYPE(obj)->tp_iternext != &_PyObject_NextNotImplemented)
+
+/* === Sequence protocol ================================================ */
+
+/* Assume tp_as_sequence and sq_item exist and that 'i' does not
+   need to be corrected for a negative index. */
+#define PySequence_ITEM(o, i)\
+    ( Py_TYPE(o)->tp_as_sequence->sq_item(o, i) )
+
+#define PY_ITERSEARCH_COUNT    1
+#define PY_ITERSEARCH_INDEX    2
+#define PY_ITERSEARCH_CONTAINS 3
+
+/* Iterate over seq.
+
+   Result depends on the operation:
+
+   PY_ITERSEARCH_COUNT:  return # of times obj appears in seq; -1 if
+     error.
+   PY_ITERSEARCH_INDEX:  return 0-based index of first occurrence of
+     obj in seq; set ValueError and return -1 if none found;
+     also return -1 on error.
+   PY_ITERSEARCH_CONTAINS:  return 1 if obj in seq, else 0; -1 on
+     error. */
+PyAPI_FUNC(Py_ssize_t) _PySequence_IterSearch(PyObject *seq,
+                                              PyObject *obj, int operation);
+
+/* === Mapping protocol ================================================= */
+
+PyAPI_FUNC(int) _PyObject_RealIsInstance(PyObject *inst, PyObject *cls);
+
+PyAPI_FUNC(int) _PyObject_RealIsSubclass(PyObject *derived, PyObject *cls);
+
+PyAPI_FUNC(char *const *) _PySequence_BytesToCharpArray(PyObject* self);
+
+PyAPI_FUNC(void) _Py_FreeCharPArray(char *const array[]);
+
+/* For internal use by buffer API functions */
+PyAPI_FUNC(void) _Py_add_one_to_index_F(int nd, Py_ssize_t *index,
+                                        const Py_ssize_t *shape);
+PyAPI_FUNC(void) _Py_add_one_to_index_C(int nd, Py_ssize_t *index,
+                                        const Py_ssize_t *shape);
+
+/* Convert Python int to Py_ssize_t. Do nothing if the argument is None. */
+PyAPI_FUNC(int) _Py_convert_optional_to_ssize_t(PyObject *, void *);
+
+#ifdef __cplusplus
+}
+#endif