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usr/include/python3.10/cpython/object.h 0000644 00000046235 15027550775 0013755 0 ustar 00 #ifndef Py_CPYTHON_OBJECT_H # error "this header file must not be included directly" #endif PyAPI_FUNC(void) _Py_NewReference(PyObject *op); #ifdef Py_TRACE_REFS /* Py_TRACE_REFS is such major surgery that we call external routines. */ PyAPI_FUNC(void) _Py_ForgetReference(PyObject *); #endif #ifdef Py_REF_DEBUG PyAPI_FUNC(Py_ssize_t) _Py_GetRefTotal(void); #endif /********************* String Literals ****************************************/ /* This structure helps managing static strings. The basic usage goes like this: Instead of doing r = PyObject_CallMethod(o, "foo", "args", ...); do _Py_IDENTIFIER(foo); ... r = _PyObject_CallMethodId(o, &PyId_foo, "args", ...); PyId_foo is a static variable, either on block level or file level. On first usage, the string "foo" is interned, and the structures are linked. On interpreter shutdown, all strings are released. Alternatively, _Py_static_string allows choosing the variable name. _PyUnicode_FromId returns a borrowed reference to the interned string. _PyObject_{Get,Set,Has}AttrId are __getattr__ versions using _Py_Identifier*. */ typedef struct _Py_Identifier { const char* string; // Index in PyInterpreterState.unicode.ids.array. It is process-wide // unique and must be initialized to -1. Py_ssize_t index; } _Py_Identifier; #define _Py_static_string_init(value) { .string = value, .index = -1 } #define _Py_static_string(varname, value) static _Py_Identifier varname = _Py_static_string_init(value) #define _Py_IDENTIFIER(varname) _Py_static_string(PyId_##varname, #varname) /* buffer interface */ typedef struct bufferinfo { void *buf; PyObject *obj; /* owned reference */ Py_ssize_t len; Py_ssize_t itemsize; /* This is Py_ssize_t so it can be pointed to by strides in simple case.*/ int readonly; int ndim; char *format; Py_ssize_t *shape; Py_ssize_t *strides; Py_ssize_t *suboffsets; void *internal; } Py_buffer; typedef int (*getbufferproc)(PyObject *, Py_buffer *, int); typedef void (*releasebufferproc)(PyObject *, Py_buffer *); typedef PyObject *(*vectorcallfunc)(PyObject *callable, PyObject *const *args, size_t nargsf, PyObject *kwnames); /* Maximum number of dimensions */ #define PyBUF_MAX_NDIM 64 /* Flags for getting buffers */ #define PyBUF_SIMPLE 0 #define PyBUF_WRITABLE 0x0001 /* we used to include an E, backwards compatible alias */ #define PyBUF_WRITEABLE PyBUF_WRITABLE #define PyBUF_FORMAT 0x0004 #define PyBUF_ND 0x0008 #define PyBUF_STRIDES (0x0010 | PyBUF_ND) #define PyBUF_C_CONTIGUOUS (0x0020 | PyBUF_STRIDES) #define PyBUF_F_CONTIGUOUS (0x0040 | PyBUF_STRIDES) #define PyBUF_ANY_CONTIGUOUS (0x0080 | PyBUF_STRIDES) #define PyBUF_INDIRECT (0x0100 | PyBUF_STRIDES) #define PyBUF_CONTIG (PyBUF_ND | PyBUF_WRITABLE) #define PyBUF_CONTIG_RO (PyBUF_ND) #define PyBUF_STRIDED (PyBUF_STRIDES | PyBUF_WRITABLE) #define PyBUF_STRIDED_RO (PyBUF_STRIDES) #define PyBUF_RECORDS (PyBUF_STRIDES | PyBUF_WRITABLE | PyBUF_FORMAT) #define PyBUF_RECORDS_RO (PyBUF_STRIDES | PyBUF_FORMAT) #define PyBUF_FULL (PyBUF_INDIRECT | PyBUF_WRITABLE | PyBUF_FORMAT) #define PyBUF_FULL_RO (PyBUF_INDIRECT | PyBUF_FORMAT) #define PyBUF_READ 0x100 #define PyBUF_WRITE 0x200 /* End buffer interface */ typedef struct { /* Number implementations must check *both* arguments for proper type and implement the necessary conversions in the slot functions themselves. */ binaryfunc nb_add; binaryfunc nb_subtract; binaryfunc nb_multiply; binaryfunc nb_remainder; binaryfunc nb_divmod; ternaryfunc nb_power; unaryfunc nb_negative; unaryfunc nb_positive; unaryfunc nb_absolute; inquiry nb_bool; unaryfunc nb_invert; binaryfunc nb_lshift; binaryfunc nb_rshift; binaryfunc nb_and; binaryfunc nb_xor; binaryfunc nb_or; unaryfunc nb_int; void *nb_reserved; /* the slot formerly known as nb_long */ unaryfunc nb_float; binaryfunc nb_inplace_add; binaryfunc nb_inplace_subtract; binaryfunc nb_inplace_multiply; binaryfunc nb_inplace_remainder; ternaryfunc nb_inplace_power; binaryfunc nb_inplace_lshift; binaryfunc nb_inplace_rshift; binaryfunc nb_inplace_and; binaryfunc nb_inplace_xor; binaryfunc nb_inplace_or; binaryfunc nb_floor_divide; binaryfunc nb_true_divide; binaryfunc nb_inplace_floor_divide; binaryfunc nb_inplace_true_divide; unaryfunc nb_index; binaryfunc nb_matrix_multiply; binaryfunc nb_inplace_matrix_multiply; } PyNumberMethods; typedef struct { lenfunc sq_length; binaryfunc sq_concat; ssizeargfunc sq_repeat; ssizeargfunc sq_item; void *was_sq_slice; ssizeobjargproc sq_ass_item; void *was_sq_ass_slice; objobjproc sq_contains; binaryfunc sq_inplace_concat; ssizeargfunc sq_inplace_repeat; } PySequenceMethods; typedef struct { lenfunc mp_length; binaryfunc mp_subscript; objobjargproc mp_ass_subscript; } PyMappingMethods; typedef PySendResult (*sendfunc)(PyObject *iter, PyObject *value, PyObject **result); typedef struct { unaryfunc am_await; unaryfunc am_aiter; unaryfunc am_anext; sendfunc am_send; } PyAsyncMethods; typedef struct { getbufferproc bf_getbuffer; releasebufferproc bf_releasebuffer; } PyBufferProcs; /* Allow printfunc in the tp_vectorcall_offset slot for * backwards-compatibility */ typedef Py_ssize_t printfunc; // If this structure is modified, Doc/includes/typestruct.h should be updated // as well. struct _typeobject { PyObject_VAR_HEAD const char *tp_name; /* For printing, in format "<module>.<name>" */ Py_ssize_t tp_basicsize, tp_itemsize; /* For allocation */ /* Methods to implement standard operations */ destructor tp_dealloc; Py_ssize_t tp_vectorcall_offset; getattrfunc tp_getattr; setattrfunc tp_setattr; PyAsyncMethods *tp_as_async; /* formerly known as tp_compare (Python 2) or tp_reserved (Python 3) */ reprfunc tp_repr; /* Method suites for standard classes */ PyNumberMethods *tp_as_number; PySequenceMethods *tp_as_sequence; PyMappingMethods *tp_as_mapping; /* More standard operations (here for binary compatibility) */ hashfunc tp_hash; ternaryfunc tp_call; reprfunc tp_str; getattrofunc tp_getattro; setattrofunc tp_setattro; /* Functions to access object as input/output buffer */ PyBufferProcs *tp_as_buffer; /* Flags to define presence of optional/expanded features */ unsigned long tp_flags; const char *tp_doc; /* Documentation string */ /* Assigned meaning in release 2.0 */ /* call function for all accessible objects */ traverseproc tp_traverse; /* delete references to contained objects */ inquiry tp_clear; /* Assigned meaning in release 2.1 */ /* rich comparisons */ richcmpfunc tp_richcompare; /* weak reference enabler */ Py_ssize_t tp_weaklistoffset; /* Iterators */ getiterfunc tp_iter; iternextfunc tp_iternext; /* Attribute descriptor and subclassing stuff */ struct PyMethodDef *tp_methods; struct PyMemberDef *tp_members; struct PyGetSetDef *tp_getset; // Strong reference on a heap type, borrowed reference on a static type struct _typeobject *tp_base; PyObject *tp_dict; descrgetfunc tp_descr_get; descrsetfunc tp_descr_set; Py_ssize_t tp_dictoffset; initproc tp_init; allocfunc tp_alloc; newfunc tp_new; freefunc tp_free; /* Low-level free-memory routine */ inquiry tp_is_gc; /* For PyObject_IS_GC */ PyObject *tp_bases; PyObject *tp_mro; /* method resolution order */ PyObject *tp_cache; PyObject *tp_subclasses; PyObject *tp_weaklist; destructor tp_del; /* Type attribute cache version tag. Added in version 2.6 */ unsigned int tp_version_tag; destructor tp_finalize; vectorcallfunc tp_vectorcall; }; /* The *real* layout of a type object when allocated on the heap */ typedef struct _heaptypeobject { /* Note: there's a dependency on the order of these members in slotptr() in typeobject.c . */ PyTypeObject ht_type; PyAsyncMethods as_async; PyNumberMethods as_number; PyMappingMethods as_mapping; PySequenceMethods as_sequence; /* as_sequence comes after as_mapping, so that the mapping wins when both the mapping and the sequence define a given operator (e.g. __getitem__). see add_operators() in typeobject.c . */ PyBufferProcs as_buffer; PyObject *ht_name, *ht_slots, *ht_qualname; struct _dictkeysobject *ht_cached_keys; PyObject *ht_module; /* here are optional user slots, followed by the members. */ } PyHeapTypeObject; /* access macro to the members which are floating "behind" the object */ #define PyHeapType_GET_MEMBERS(etype) \ ((PyMemberDef *)(((char *)etype) + Py_TYPE(etype)->tp_basicsize)) PyAPI_FUNC(const char *) _PyType_Name(PyTypeObject *); PyAPI_FUNC(PyObject *) _PyType_Lookup(PyTypeObject *, PyObject *); PyAPI_FUNC(PyObject *) _PyType_LookupId(PyTypeObject *, _Py_Identifier *); PyAPI_FUNC(PyObject *) _PyObject_LookupSpecial(PyObject *, _Py_Identifier *); PyAPI_FUNC(PyTypeObject *) _PyType_CalculateMetaclass(PyTypeObject *, PyObject *); PyAPI_FUNC(PyObject *) _PyType_GetDocFromInternalDoc(const char *, const char *); PyAPI_FUNC(PyObject *) _PyType_GetTextSignatureFromInternalDoc(const char *, const char *); struct PyModuleDef; PyAPI_FUNC(PyObject *) _PyType_GetModuleByDef(PyTypeObject *, struct PyModuleDef *); struct _Py_Identifier; PyAPI_FUNC(int) PyObject_Print(PyObject *, FILE *, int); PyAPI_FUNC(void) _Py_BreakPoint(void); PyAPI_FUNC(void) _PyObject_Dump(PyObject *); PyAPI_FUNC(int) _PyObject_IsFreed(PyObject *); PyAPI_FUNC(int) _PyObject_IsAbstract(PyObject *); PyAPI_FUNC(PyObject *) _PyObject_GetAttrId(PyObject *, struct _Py_Identifier *); PyAPI_FUNC(int) _PyObject_SetAttrId(PyObject *, struct _Py_Identifier *, PyObject *); /* Replacements of PyObject_GetAttr() and _PyObject_GetAttrId() which don't raise AttributeError. Return 1 and set *result != NULL if an attribute is found. Return 0 and set *result == NULL if an attribute is not found; an AttributeError is silenced. Return -1 and set *result == NULL if an error other than AttributeError is raised. */ PyAPI_FUNC(int) _PyObject_LookupAttr(PyObject *, PyObject *, PyObject **); PyAPI_FUNC(int) _PyObject_LookupAttrId(PyObject *, struct _Py_Identifier *, PyObject **); PyAPI_FUNC(int) _PyObject_GetMethod(PyObject *obj, PyObject *name, PyObject **method); PyAPI_FUNC(PyObject **) _PyObject_GetDictPtr(PyObject *); PyAPI_FUNC(PyObject *) _PyObject_NextNotImplemented(PyObject *); PyAPI_FUNC(void) PyObject_CallFinalizer(PyObject *); PyAPI_FUNC(int) PyObject_CallFinalizerFromDealloc(PyObject *); /* Same as PyObject_Generic{Get,Set}Attr, but passing the attributes dict as the last parameter. */ PyAPI_FUNC(PyObject *) _PyObject_GenericGetAttrWithDict(PyObject *, PyObject *, PyObject *, int); PyAPI_FUNC(int) _PyObject_GenericSetAttrWithDict(PyObject *, PyObject *, PyObject *, PyObject *); PyAPI_FUNC(PyObject *) _PyObject_FunctionStr(PyObject *); /* Safely decref `op` and set `op` to `op2`. * * As in case of Py_CLEAR "the obvious" code can be deadly: * * Py_DECREF(op); * op = op2; * * The safe way is: * * Py_SETREF(op, op2); * * That arranges to set `op` to `op2` _before_ decref'ing, so that any code * triggered as a side-effect of `op` getting torn down no longer believes * `op` points to a valid object. * * Py_XSETREF is a variant of Py_SETREF that uses Py_XDECREF instead of * Py_DECREF. */ #define Py_SETREF(op, op2) \ do { \ PyObject *_py_tmp = _PyObject_CAST(op); \ (op) = (op2); \ Py_DECREF(_py_tmp); \ } while (0) #define Py_XSETREF(op, op2) \ do { \ PyObject *_py_tmp = _PyObject_CAST(op); \ (op) = (op2); \ Py_XDECREF(_py_tmp); \ } while (0) PyAPI_DATA(PyTypeObject) _PyNone_Type; PyAPI_DATA(PyTypeObject) _PyNotImplemented_Type; /* Maps Py_LT to Py_GT, ..., Py_GE to Py_LE. * Defined in object.c. */ PyAPI_DATA(int) _Py_SwappedOp[]; PyAPI_FUNC(void) _PyDebugAllocatorStats(FILE *out, const char *block_name, int num_blocks, size_t sizeof_block); PyAPI_FUNC(void) _PyObject_DebugTypeStats(FILE *out); /* Define a pair of assertion macros: _PyObject_ASSERT_FROM(), _PyObject_ASSERT_WITH_MSG() and _PyObject_ASSERT(). These work like the regular C assert(), in that they will abort the process with a message on stderr if the given condition fails to hold, but compile away to nothing if NDEBUG is defined. However, before aborting, Python will also try to call _PyObject_Dump() on the given object. This may be of use when investigating bugs in which a particular object is corrupt (e.g. buggy a tp_visit method in an extension module breaking the garbage collector), to help locate the broken objects. The WITH_MSG variant allows you to supply an additional message that Python will attempt to print to stderr, after the object dump. */ #ifdef NDEBUG /* No debugging: compile away the assertions: */ # define _PyObject_ASSERT_FROM(obj, expr, msg, filename, lineno, func) \ ((void)0) #else /* With debugging: generate checks: */ # define _PyObject_ASSERT_FROM(obj, expr, msg, filename, lineno, func) \ ((expr) \ ? (void)(0) \ : _PyObject_AssertFailed((obj), Py_STRINGIFY(expr), \ (msg), (filename), (lineno), (func))) #endif #define _PyObject_ASSERT_WITH_MSG(obj, expr, msg) \ _PyObject_ASSERT_FROM(obj, expr, msg, __FILE__, __LINE__, __func__) #define _PyObject_ASSERT(obj, expr) \ _PyObject_ASSERT_WITH_MSG(obj, expr, NULL) #define _PyObject_ASSERT_FAILED_MSG(obj, msg) \ _PyObject_AssertFailed((obj), NULL, (msg), __FILE__, __LINE__, __func__) /* Declare and define _PyObject_AssertFailed() even when NDEBUG is defined, to avoid causing compiler/linker errors when building extensions without NDEBUG against a Python built with NDEBUG defined. msg, expr and function can be NULL. */ PyAPI_FUNC(void) _Py_NO_RETURN _PyObject_AssertFailed( PyObject *obj, const char *expr, const char *msg, const char *file, int line, const char *function); /* Check if an object is consistent. For example, ensure that the reference counter is greater than or equal to 1, and ensure that ob_type is not NULL. Call _PyObject_AssertFailed() if the object is inconsistent. If check_content is zero, only check header fields: reduce the overhead. The function always return 1. The return value is just here to be able to write: assert(_PyObject_CheckConsistency(obj, 1)); */ PyAPI_FUNC(int) _PyObject_CheckConsistency( PyObject *op, int check_content); /* Trashcan mechanism, thanks to Christian Tismer. When deallocating a container object, it's possible to trigger an unbounded chain of deallocations, as each Py_DECREF in turn drops the refcount on "the next" object in the chain to 0. This can easily lead to stack overflows, especially in threads (which typically have less stack space to work with). A container object can avoid this by bracketing the body of its tp_dealloc function with a pair of macros: static void mytype_dealloc(mytype *p) { ... declarations go here ... PyObject_GC_UnTrack(p); // must untrack first Py_TRASHCAN_BEGIN(p, mytype_dealloc) ... The body of the deallocator goes here, including all calls ... ... to Py_DECREF on contained objects. ... Py_TRASHCAN_END // there should be no code after this } CAUTION: Never return from the middle of the body! If the body needs to "get out early", put a label immediately before the Py_TRASHCAN_END call, and goto it. Else the call-depth counter (see below) will stay above 0 forever, and the trashcan will never get emptied. How it works: The BEGIN macro increments a call-depth counter. So long as this counter is small, the body of the deallocator is run directly without further ado. But if the counter gets large, it instead adds p to a list of objects to be deallocated later, skips the body of the deallocator, and resumes execution after the END macro. The tp_dealloc routine then returns without deallocating anything (and so unbounded call-stack depth is avoided). When the call stack finishes unwinding again, code generated by the END macro notices this, and calls another routine to deallocate all the objects that may have been added to the list of deferred deallocations. In effect, a chain of N deallocations is broken into (N-1)/(PyTrash_UNWIND_LEVEL-1) pieces, with the call stack never exceeding a depth of PyTrash_UNWIND_LEVEL. Since the tp_dealloc of a subclass typically calls the tp_dealloc of the base class, we need to ensure that the trashcan is only triggered on the tp_dealloc of the actual class being deallocated. Otherwise we might end up with a partially-deallocated object. To check this, the tp_dealloc function must be passed as second argument to Py_TRASHCAN_BEGIN(). */ /* This is the old private API, invoked by the macros before 3.2.4. Kept for binary compatibility of extensions using the stable ABI. */ PyAPI_FUNC(void) _PyTrash_deposit_object(PyObject*); PyAPI_FUNC(void) _PyTrash_destroy_chain(void); /* This is the old private API, invoked by the macros before 3.9. Kept for binary compatibility of extensions using the stable ABI. */ PyAPI_FUNC(void) _PyTrash_thread_deposit_object(PyObject*); PyAPI_FUNC(void) _PyTrash_thread_destroy_chain(void); /* Forward declarations for PyThreadState */ struct _ts; /* Python 3.9 private API, invoked by the macros below. */ PyAPI_FUNC(int) _PyTrash_begin(struct _ts *tstate, PyObject *op); PyAPI_FUNC(void) _PyTrash_end(struct _ts *tstate); /* Python 3.10 private API, invoked by the Py_TRASHCAN_BEGIN(). */ PyAPI_FUNC(int) _PyTrash_cond(PyObject *op, destructor dealloc); #define PyTrash_UNWIND_LEVEL 50 #define Py_TRASHCAN_BEGIN_CONDITION(op, cond) \ do { \ PyThreadState *_tstate = NULL; \ /* If "cond" is false, then _tstate remains NULL and the deallocator \ * is run normally without involving the trashcan */ \ if (cond) { \ _tstate = PyThreadState_Get(); \ if (_PyTrash_begin(_tstate, _PyObject_CAST(op))) { \ break; \ } \ } /* The body of the deallocator is here. */ #define Py_TRASHCAN_END \ if (_tstate) { \ _PyTrash_end(_tstate); \ } \ } while (0); #define Py_TRASHCAN_BEGIN(op, dealloc) \ Py_TRASHCAN_BEGIN_CONDITION(op, \ _PyTrash_cond(_PyObject_CAST(op), (destructor)dealloc)) /* For backwards compatibility, these macros enable the trashcan * unconditionally */ #define Py_TRASHCAN_SAFE_BEGIN(op) Py_TRASHCAN_BEGIN_CONDITION(op, 1) #define Py_TRASHCAN_SAFE_END(op) Py_TRASHCAN_END usr/include/python3.10/object.h 0000644 00000067270 15027551353 0012264 0 ustar 00 #ifndef Py_OBJECT_H #define Py_OBJECT_H #ifdef __cplusplus extern "C" { #endif /* Object and type object interface */ /* Objects are structures allocated on the heap. Special rules apply to the use of objects to ensure they are properly garbage-collected. Objects are never allocated statically or on the stack; they must be accessed through special macros and functions only. (Type objects are exceptions to the first rule; the standard types are represented by statically initialized type objects, although work on type/class unification for Python 2.2 made it possible to have heap-allocated type objects too). An object has a 'reference count' that is increased or decreased when a pointer to the object is copied or deleted; when the reference count reaches zero there are no references to the object left and it can be removed from the heap. An object has a 'type' that determines what it represents and what kind of data it contains. An object's type is fixed when it is created. Types themselves are represented as objects; an object contains a pointer to the corresponding type object. The type itself has a type pointer pointing to the object representing the type 'type', which contains a pointer to itself!. Objects do not float around in memory; once allocated an object keeps the same size and address. Objects that must hold variable-size data can contain pointers to variable-size parts of the object. Not all objects of the same type have the same size; but the size cannot change after allocation. (These restrictions are made so a reference to an object can be simply a pointer -- moving an object would require updating all the pointers, and changing an object's size would require moving it if there was another object right next to it.) Objects are always accessed through pointers of the type 'PyObject *'. The type 'PyObject' is a structure that only contains the reference count and the type pointer. The actual memory allocated for an object contains other data that can only be accessed after casting the pointer to a pointer to a longer structure type. This longer type must start with the reference count and type fields; the macro PyObject_HEAD should be used for this (to accommodate for future changes). The implementation of a particular object type can cast the object pointer to the proper type and back. A standard interface exists for objects that contain an array of items whose size is determined when the object is allocated. */ /* Py_DEBUG implies Py_REF_DEBUG. */ #if defined(Py_DEBUG) && !defined(Py_REF_DEBUG) # define Py_REF_DEBUG #endif #if defined(Py_LIMITED_API) && defined(Py_TRACE_REFS) # error Py_LIMITED_API is incompatible with Py_TRACE_REFS #endif /* PyTypeObject structure is defined in cpython/object.h. In Py_LIMITED_API, PyTypeObject is an opaque structure. */ typedef struct _typeobject PyTypeObject; #ifdef Py_TRACE_REFS /* Define pointers to support a doubly-linked list of all live heap objects. */ #define _PyObject_HEAD_EXTRA \ struct _object *_ob_next; \ struct _object *_ob_prev; #define _PyObject_EXTRA_INIT 0, 0, #else # define _PyObject_HEAD_EXTRA # define _PyObject_EXTRA_INIT #endif /* PyObject_HEAD defines the initial segment of every PyObject. */ #define PyObject_HEAD PyObject ob_base; #define PyObject_HEAD_INIT(type) \ { _PyObject_EXTRA_INIT \ 1, type }, #define PyVarObject_HEAD_INIT(type, size) \ { PyObject_HEAD_INIT(type) size }, /* PyObject_VAR_HEAD defines the initial segment of all variable-size * container objects. These end with a declaration of an array with 1 * element, but enough space is malloc'ed so that the array actually * has room for ob_size elements. Note that ob_size is an element count, * not necessarily a byte count. */ #define PyObject_VAR_HEAD PyVarObject ob_base; #define Py_INVALID_SIZE (Py_ssize_t)-1 /* Nothing is actually declared to be a PyObject, but every pointer to * a Python object can be cast to a PyObject*. This is inheritance built * by hand. Similarly every pointer to a variable-size Python object can, * in addition, be cast to PyVarObject*. */ typedef struct _object { _PyObject_HEAD_EXTRA Py_ssize_t ob_refcnt; PyTypeObject *ob_type; } PyObject; /* Cast argument to PyObject* type. */ #define _PyObject_CAST(op) ((PyObject*)(op)) #define _PyObject_CAST_CONST(op) ((const PyObject*)(op)) typedef struct { PyObject ob_base; Py_ssize_t ob_size; /* Number of items in variable part */ } PyVarObject; /* Cast argument to PyVarObject* type. */ #define _PyVarObject_CAST(op) ((PyVarObject*)(op)) #define _PyVarObject_CAST_CONST(op) ((const PyVarObject*)(op)) // Test if the 'x' object is the 'y' object, the same as "x is y" in Python. PyAPI_FUNC(int) Py_Is(PyObject *x, PyObject *y); #define Py_Is(x, y) ((x) == (y)) static inline Py_ssize_t _Py_REFCNT(const PyObject *ob) { return ob->ob_refcnt; } #define Py_REFCNT(ob) _Py_REFCNT(_PyObject_CAST_CONST(ob)) // bpo-39573: The Py_SET_TYPE() function must be used to set an object type. #define Py_TYPE(ob) (_PyObject_CAST(ob)->ob_type) // bpo-39573: The Py_SET_SIZE() function must be used to set an object size. #define Py_SIZE(ob) (_PyVarObject_CAST(ob)->ob_size) static inline int _Py_IS_TYPE(const PyObject *ob, const PyTypeObject *type) { // bpo-44378: Don't use Py_TYPE() since Py_TYPE() requires a non-const // object. return ob->ob_type == type; } #define Py_IS_TYPE(ob, type) _Py_IS_TYPE(_PyObject_CAST_CONST(ob), type) static inline void _Py_SET_REFCNT(PyObject *ob, Py_ssize_t refcnt) { ob->ob_refcnt = refcnt; } #define Py_SET_REFCNT(ob, refcnt) _Py_SET_REFCNT(_PyObject_CAST(ob), refcnt) static inline void _Py_SET_TYPE(PyObject *ob, PyTypeObject *type) { ob->ob_type = type; } #define Py_SET_TYPE(ob, type) _Py_SET_TYPE(_PyObject_CAST(ob), type) static inline void _Py_SET_SIZE(PyVarObject *ob, Py_ssize_t size) { ob->ob_size = size; } #define Py_SET_SIZE(ob, size) _Py_SET_SIZE(_PyVarObject_CAST(ob), size) /* Type objects contain a string containing the type name (to help somewhat in debugging), the allocation parameters (see PyObject_New() and PyObject_NewVar()), and methods for accessing objects of the type. Methods are optional, a nil pointer meaning that particular kind of access is not available for this type. The Py_DECREF() macro uses the tp_dealloc method without checking for a nil pointer; it should always be implemented except if the implementation can guarantee that the reference count will never reach zero (e.g., for statically allocated type objects). NB: the methods for certain type groups are now contained in separate method blocks. */ typedef PyObject * (*unaryfunc)(PyObject *); typedef PyObject * (*binaryfunc)(PyObject *, PyObject *); typedef PyObject * (*ternaryfunc)(PyObject *, PyObject *, PyObject *); typedef int (*inquiry)(PyObject *); typedef Py_ssize_t (*lenfunc)(PyObject *); typedef PyObject *(*ssizeargfunc)(PyObject *, Py_ssize_t); typedef PyObject *(*ssizessizeargfunc)(PyObject *, Py_ssize_t, Py_ssize_t); typedef int(*ssizeobjargproc)(PyObject *, Py_ssize_t, PyObject *); typedef int(*ssizessizeobjargproc)(PyObject *, Py_ssize_t, Py_ssize_t, PyObject *); typedef int(*objobjargproc)(PyObject *, PyObject *, PyObject *); typedef int (*objobjproc)(PyObject *, PyObject *); typedef int (*visitproc)(PyObject *, void *); typedef int (*traverseproc)(PyObject *, visitproc, void *); typedef void (*freefunc)(void *); typedef void (*destructor)(PyObject *); typedef PyObject *(*getattrfunc)(PyObject *, char *); typedef PyObject *(*getattrofunc)(PyObject *, PyObject *); typedef int (*setattrfunc)(PyObject *, char *, PyObject *); typedef int (*setattrofunc)(PyObject *, PyObject *, PyObject *); typedef PyObject *(*reprfunc)(PyObject *); typedef Py_hash_t (*hashfunc)(PyObject *); typedef PyObject *(*richcmpfunc) (PyObject *, PyObject *, int); typedef PyObject *(*getiterfunc) (PyObject *); typedef PyObject *(*iternextfunc) (PyObject *); typedef PyObject *(*descrgetfunc) (PyObject *, PyObject *, PyObject *); typedef int (*descrsetfunc) (PyObject *, PyObject *, PyObject *); typedef int (*initproc)(PyObject *, PyObject *, PyObject *); typedef PyObject *(*newfunc)(PyTypeObject *, PyObject *, PyObject *); typedef PyObject *(*allocfunc)(PyTypeObject *, Py_ssize_t); typedef struct{ int slot; /* slot id, see below */ void *pfunc; /* function pointer */ } PyType_Slot; typedef struct{ const char* name; int basicsize; int itemsize; unsigned int flags; PyType_Slot *slots; /* terminated by slot==0. */ } PyType_Spec; PyAPI_FUNC(PyObject*) PyType_FromSpec(PyType_Spec*); #if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 >= 0x03030000 PyAPI_FUNC(PyObject*) PyType_FromSpecWithBases(PyType_Spec*, PyObject*); #endif #if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 >= 0x03040000 PyAPI_FUNC(void*) PyType_GetSlot(PyTypeObject*, int); #endif #if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 >= 0x03090000 PyAPI_FUNC(PyObject*) PyType_FromModuleAndSpec(PyObject *, PyType_Spec *, PyObject *); PyAPI_FUNC(PyObject *) PyType_GetModule(struct _typeobject *); PyAPI_FUNC(void *) PyType_GetModuleState(struct _typeobject *); #endif /* Generic type check */ PyAPI_FUNC(int) PyType_IsSubtype(PyTypeObject *, PyTypeObject *); static inline int _PyObject_TypeCheck(PyObject *ob, PyTypeObject *type) { return Py_IS_TYPE(ob, type) || PyType_IsSubtype(Py_TYPE(ob), type); } #define PyObject_TypeCheck(ob, type) _PyObject_TypeCheck(_PyObject_CAST(ob), type) PyAPI_DATA(PyTypeObject) PyType_Type; /* built-in 'type' */ PyAPI_DATA(PyTypeObject) PyBaseObject_Type; /* built-in 'object' */ PyAPI_DATA(PyTypeObject) PySuper_Type; /* built-in 'super' */ PyAPI_FUNC(unsigned long) PyType_GetFlags(PyTypeObject*); PyAPI_FUNC(int) PyType_Ready(PyTypeObject *); PyAPI_FUNC(PyObject *) PyType_GenericAlloc(PyTypeObject *, Py_ssize_t); PyAPI_FUNC(PyObject *) PyType_GenericNew(PyTypeObject *, PyObject *, PyObject *); PyAPI_FUNC(unsigned int) PyType_ClearCache(void); PyAPI_FUNC(void) PyType_Modified(PyTypeObject *); /* Generic operations on objects */ PyAPI_FUNC(PyObject *) PyObject_Repr(PyObject *); PyAPI_FUNC(PyObject *) PyObject_Str(PyObject *); PyAPI_FUNC(PyObject *) PyObject_ASCII(PyObject *); PyAPI_FUNC(PyObject *) PyObject_Bytes(PyObject *); PyAPI_FUNC(PyObject *) PyObject_RichCompare(PyObject *, PyObject *, int); PyAPI_FUNC(int) PyObject_RichCompareBool(PyObject *, PyObject *, int); PyAPI_FUNC(PyObject *) PyObject_GetAttrString(PyObject *, const char *); PyAPI_FUNC(int) PyObject_SetAttrString(PyObject *, const char *, PyObject *); PyAPI_FUNC(int) PyObject_HasAttrString(PyObject *, const char *); PyAPI_FUNC(PyObject *) PyObject_GetAttr(PyObject *, PyObject *); PyAPI_FUNC(int) PyObject_SetAttr(PyObject *, PyObject *, PyObject *); PyAPI_FUNC(int) PyObject_HasAttr(PyObject *, PyObject *); PyAPI_FUNC(PyObject *) PyObject_SelfIter(PyObject *); PyAPI_FUNC(PyObject *) PyObject_GenericGetAttr(PyObject *, PyObject *); PyAPI_FUNC(int) PyObject_GenericSetAttr(PyObject *, PyObject *, PyObject *); #if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 >= 0x03030000 PyAPI_FUNC(int) PyObject_GenericSetDict(PyObject *, PyObject *, void *); #endif PyAPI_FUNC(Py_hash_t) PyObject_Hash(PyObject *); PyAPI_FUNC(Py_hash_t) PyObject_HashNotImplemented(PyObject *); PyAPI_FUNC(int) PyObject_IsTrue(PyObject *); PyAPI_FUNC(int) PyObject_Not(PyObject *); PyAPI_FUNC(int) PyCallable_Check(PyObject *); PyAPI_FUNC(void) PyObject_ClearWeakRefs(PyObject *); /* PyObject_Dir(obj) acts like Python builtins.dir(obj), returning a list of strings. PyObject_Dir(NULL) is like builtins.dir(), returning the names of the current locals. In this case, if there are no current locals, NULL is returned, and PyErr_Occurred() is false. */ PyAPI_FUNC(PyObject *) PyObject_Dir(PyObject *); /* Helpers for printing recursive container types */ PyAPI_FUNC(int) Py_ReprEnter(PyObject *); PyAPI_FUNC(void) Py_ReprLeave(PyObject *); /* Flag bits for printing: */ #define Py_PRINT_RAW 1 /* No string quotes etc. */ /* Type flags (tp_flags) These flags are used to change expected features and behavior for a particular type. Arbitration of the flag bit positions will need to be coordinated among all extension writers who publicly release their extensions (this will be fewer than you might expect!). Most flags were removed as of Python 3.0 to make room for new flags. (Some flags are not for backwards compatibility but to indicate the presence of an optional feature; these flags remain of course.) Type definitions should use Py_TPFLAGS_DEFAULT for their tp_flags value. Code can use PyType_HasFeature(type_ob, flag_value) to test whether the given type object has a specified feature. */ #ifndef Py_LIMITED_API /* Set if instances of the type object are treated as sequences for pattern matching */ #define Py_TPFLAGS_SEQUENCE (1 << 5) /* Set if instances of the type object are treated as mappings for pattern matching */ #define Py_TPFLAGS_MAPPING (1 << 6) #endif /* Disallow creating instances of the type: set tp_new to NULL and don't create * the "__new__" key in the type dictionary. */ #define Py_TPFLAGS_DISALLOW_INSTANTIATION (1UL << 7) /* Set if the type object is immutable: type attributes cannot be set nor deleted */ #define Py_TPFLAGS_IMMUTABLETYPE (1UL << 8) /* Set if the type object is dynamically allocated */ #define Py_TPFLAGS_HEAPTYPE (1UL << 9) /* Set if the type allows subclassing */ #define Py_TPFLAGS_BASETYPE (1UL << 10) /* Set if the type implements the vectorcall protocol (PEP 590) */ #ifndef Py_LIMITED_API #define Py_TPFLAGS_HAVE_VECTORCALL (1UL << 11) // Backwards compatibility alias for API that was provisional in Python 3.8 #define _Py_TPFLAGS_HAVE_VECTORCALL Py_TPFLAGS_HAVE_VECTORCALL #endif /* Set if the type is 'ready' -- fully initialized */ #define Py_TPFLAGS_READY (1UL << 12) /* Set while the type is being 'readied', to prevent recursive ready calls */ #define Py_TPFLAGS_READYING (1UL << 13) /* Objects support garbage collection (see objimpl.h) */ #define Py_TPFLAGS_HAVE_GC (1UL << 14) /* These two bits are preserved for Stackless Python, next after this is 17 */ #ifdef STACKLESS #define Py_TPFLAGS_HAVE_STACKLESS_EXTENSION (3UL << 15) #else #define Py_TPFLAGS_HAVE_STACKLESS_EXTENSION 0 #endif /* Objects behave like an unbound method */ #define Py_TPFLAGS_METHOD_DESCRIPTOR (1UL << 17) /* Object has up-to-date type attribute cache */ #define Py_TPFLAGS_VALID_VERSION_TAG (1UL << 19) /* Type is abstract and cannot be instantiated */ #define Py_TPFLAGS_IS_ABSTRACT (1UL << 20) // This undocumented flag gives certain built-ins their unique pattern-matching // behavior, which allows a single positional subpattern to match against the // subject itself (rather than a mapped attribute on it): #define _Py_TPFLAGS_MATCH_SELF (1UL << 22) /* These flags are used to determine if a type is a subclass. */ #define Py_TPFLAGS_LONG_SUBCLASS (1UL << 24) #define Py_TPFLAGS_LIST_SUBCLASS (1UL << 25) #define Py_TPFLAGS_TUPLE_SUBCLASS (1UL << 26) #define Py_TPFLAGS_BYTES_SUBCLASS (1UL << 27) #define Py_TPFLAGS_UNICODE_SUBCLASS (1UL << 28) #define Py_TPFLAGS_DICT_SUBCLASS (1UL << 29) #define Py_TPFLAGS_BASE_EXC_SUBCLASS (1UL << 30) #define Py_TPFLAGS_TYPE_SUBCLASS (1UL << 31) #define Py_TPFLAGS_DEFAULT ( \ Py_TPFLAGS_HAVE_STACKLESS_EXTENSION | \ 0) /* NOTE: Some of the following flags reuse lower bits (removed as part of the * Python 3.0 transition). */ /* The following flags are kept for compatibility; in previous * versions they indicated presence of newer tp_* fields on the * type struct. * Starting with 3.8, binary compatibility of C extensions across * feature releases of Python is not supported anymore (except when * using the stable ABI, in which all classes are created dynamically, * using the interpreter's memory layout.) * Note that older extensions using the stable ABI set these flags, * so the bits must not be repurposed. */ #define Py_TPFLAGS_HAVE_FINALIZE (1UL << 0) #define Py_TPFLAGS_HAVE_VERSION_TAG (1UL << 18) /* The macros Py_INCREF(op) and Py_DECREF(op) are used to increment or decrement reference counts. Py_DECREF calls the object's deallocator function when the refcount falls to 0; for objects that don't contain references to other objects or heap memory this can be the standard function free(). Both macros can be used wherever a void expression is allowed. The argument must not be a NULL pointer. If it may be NULL, use Py_XINCREF/Py_XDECREF instead. The macro _Py_NewReference(op) initialize reference counts to 1, and in special builds (Py_REF_DEBUG, Py_TRACE_REFS) performs additional bookkeeping appropriate to the special build. We assume that the reference count field can never overflow; this can be proven when the size of the field is the same as the pointer size, so we ignore the possibility. Provided a C int is at least 32 bits (which is implicitly assumed in many parts of this code), that's enough for about 2**31 references to an object. XXX The following became out of date in Python 2.2, but I'm not sure XXX what the full truth is now. Certainly, heap-allocated type objects XXX can and should be deallocated. Type objects should never be deallocated; the type pointer in an object is not considered to be a reference to the type object, to save complications in the deallocation function. (This is actually a decision that's up to the implementer of each new type so if you want, you can count such references to the type object.) */ #ifdef Py_REF_DEBUG PyAPI_DATA(Py_ssize_t) _Py_RefTotal; PyAPI_FUNC(void) _Py_NegativeRefcount(const char *filename, int lineno, PyObject *op); #endif /* Py_REF_DEBUG */ PyAPI_FUNC(void) _Py_Dealloc(PyObject *); /* These are provided as conveniences to Python runtime embedders, so that they can have object code that is not dependent on Python compilation flags. */ PyAPI_FUNC(void) Py_IncRef(PyObject *); PyAPI_FUNC(void) Py_DecRef(PyObject *); // Similar to Py_IncRef() and Py_DecRef() but the argument must be non-NULL. // Private functions used by Py_INCREF() and Py_DECREF(). PyAPI_FUNC(void) _Py_IncRef(PyObject *); PyAPI_FUNC(void) _Py_DecRef(PyObject *); static inline void _Py_INCREF(PyObject *op) { #if defined(Py_REF_DEBUG) && defined(Py_LIMITED_API) && Py_LIMITED_API+0 >= 0x030A0000 // Stable ABI for Python 3.10 built in debug mode. _Py_IncRef(op); #else // Non-limited C API and limited C API for Python 3.9 and older access // directly PyObject.ob_refcnt. #ifdef Py_REF_DEBUG _Py_RefTotal++; #endif op->ob_refcnt++; #endif } #define Py_INCREF(op) _Py_INCREF(_PyObject_CAST(op)) static inline void _Py_DECREF( #if defined(Py_REF_DEBUG) && !(defined(Py_LIMITED_API) && Py_LIMITED_API+0 >= 0x030A0000) const char *filename, int lineno, #endif PyObject *op) { #if defined(Py_REF_DEBUG) && defined(Py_LIMITED_API) && Py_LIMITED_API+0 >= 0x030A0000 // Stable ABI for Python 3.10 built in debug mode. _Py_DecRef(op); #else // Non-limited C API and limited C API for Python 3.9 and older access // directly PyObject.ob_refcnt. #ifdef Py_REF_DEBUG _Py_RefTotal--; #endif if (--op->ob_refcnt != 0) { #ifdef Py_REF_DEBUG if (op->ob_refcnt < 0) { _Py_NegativeRefcount(filename, lineno, op); } #endif } else { _Py_Dealloc(op); } #endif } #if defined(Py_REF_DEBUG) && !(defined(Py_LIMITED_API) && Py_LIMITED_API+0 >= 0x030A0000) # define Py_DECREF(op) _Py_DECREF(__FILE__, __LINE__, _PyObject_CAST(op)) #else # define Py_DECREF(op) _Py_DECREF(_PyObject_CAST(op)) #endif /* Safely decref `op` and set `op` to NULL, especially useful in tp_clear * and tp_dealloc implementations. * * Note that "the obvious" code can be deadly: * * Py_XDECREF(op); * op = NULL; * * Typically, `op` is something like self->containee, and `self` is done * using its `containee` member. In the code sequence above, suppose * `containee` is non-NULL with a refcount of 1. Its refcount falls to * 0 on the first line, which can trigger an arbitrary amount of code, * possibly including finalizers (like __del__ methods or weakref callbacks) * coded in Python, which in turn can release the GIL and allow other threads * to run, etc. Such code may even invoke methods of `self` again, or cause * cyclic gc to trigger, but-- oops! --self->containee still points to the * object being torn down, and it may be in an insane state while being torn * down. This has in fact been a rich historic source of miserable (rare & * hard-to-diagnose) segfaulting (and other) bugs. * * The safe way is: * * Py_CLEAR(op); * * That arranges to set `op` to NULL _before_ decref'ing, so that any code * triggered as a side-effect of `op` getting torn down no longer believes * `op` points to a valid object. * * There are cases where it's safe to use the naive code, but they're brittle. * For example, if `op` points to a Python integer, you know that destroying * one of those can't cause problems -- but in part that relies on that * Python integers aren't currently weakly referencable. Best practice is * to use Py_CLEAR() even if you can't think of a reason for why you need to. */ #define Py_CLEAR(op) \ do { \ PyObject *_py_tmp = _PyObject_CAST(op); \ if (_py_tmp != NULL) { \ (op) = NULL; \ Py_DECREF(_py_tmp); \ } \ } while (0) /* Function to use in case the object pointer can be NULL: */ static inline void _Py_XINCREF(PyObject *op) { if (op != NULL) { Py_INCREF(op); } } #define Py_XINCREF(op) _Py_XINCREF(_PyObject_CAST(op)) static inline void _Py_XDECREF(PyObject *op) { if (op != NULL) { Py_DECREF(op); } } #define Py_XDECREF(op) _Py_XDECREF(_PyObject_CAST(op)) // Create a new strong reference to an object: // increment the reference count of the object and return the object. PyAPI_FUNC(PyObject*) Py_NewRef(PyObject *obj); // Similar to Py_NewRef(), but the object can be NULL. PyAPI_FUNC(PyObject*) Py_XNewRef(PyObject *obj); static inline PyObject* _Py_NewRef(PyObject *obj) { Py_INCREF(obj); return obj; } static inline PyObject* _Py_XNewRef(PyObject *obj) { Py_XINCREF(obj); return obj; } // Py_NewRef() and Py_XNewRef() are exported as functions for the stable ABI. // Names overridden with macros by static inline functions for best // performances. #define Py_NewRef(obj) _Py_NewRef(_PyObject_CAST(obj)) #define Py_XNewRef(obj) _Py_XNewRef(_PyObject_CAST(obj)) /* _Py_NoneStruct is an object of undefined type which can be used in contexts where NULL (nil) is not suitable (since NULL often means 'error'). Don't forget to apply Py_INCREF() when returning this value!!! */ PyAPI_DATA(PyObject) _Py_NoneStruct; /* Don't use this directly */ #define Py_None (&_Py_NoneStruct) // Test if an object is the None singleton, the same as "x is None" in Python. PyAPI_FUNC(int) Py_IsNone(PyObject *x); #define Py_IsNone(x) Py_Is((x), Py_None) /* Macro for returning Py_None from a function */ #define Py_RETURN_NONE return Py_NewRef(Py_None) /* Py_NotImplemented is a singleton used to signal that an operation is not implemented for a given type combination. */ PyAPI_DATA(PyObject) _Py_NotImplementedStruct; /* Don't use this directly */ #define Py_NotImplemented (&_Py_NotImplementedStruct) /* Macro for returning Py_NotImplemented from a function */ #define Py_RETURN_NOTIMPLEMENTED return Py_NewRef(Py_NotImplemented) /* Rich comparison opcodes */ #define Py_LT 0 #define Py_LE 1 #define Py_EQ 2 #define Py_NE 3 #define Py_GT 4 #define Py_GE 5 #if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 >= 0x030A0000 /* Result of calling PyIter_Send */ typedef enum { PYGEN_RETURN = 0, PYGEN_ERROR = -1, PYGEN_NEXT = 1, } PySendResult; #endif /* * Macro for implementing rich comparisons * * Needs to be a macro because any C-comparable type can be used. */ #define Py_RETURN_RICHCOMPARE(val1, val2, op) \ do { \ switch (op) { \ case Py_EQ: if ((val1) == (val2)) Py_RETURN_TRUE; Py_RETURN_FALSE; \ case Py_NE: if ((val1) != (val2)) Py_RETURN_TRUE; Py_RETURN_FALSE; \ case Py_LT: if ((val1) < (val2)) Py_RETURN_TRUE; Py_RETURN_FALSE; \ case Py_GT: if ((val1) > (val2)) Py_RETURN_TRUE; Py_RETURN_FALSE; \ case Py_LE: if ((val1) <= (val2)) Py_RETURN_TRUE; Py_RETURN_FALSE; \ case Py_GE: if ((val1) >= (val2)) Py_RETURN_TRUE; Py_RETURN_FALSE; \ default: \ Py_UNREACHABLE(); \ } \ } while (0) /* More conventions ================ Argument Checking ----------------- Functions that take objects as arguments normally don't check for nil arguments, but they do check the type of the argument, and return an error if the function doesn't apply to the type. Failure Modes ------------- Functions may fail for a variety of reasons, including running out of memory. This is communicated to the caller in two ways: an error string is set (see errors.h), and the function result differs: functions that normally return a pointer return NULL for failure, functions returning an integer return -1 (which could be a legal return value too!), and other functions return 0 for success and -1 for failure. Callers should always check for errors before using the result. If an error was set, the caller must either explicitly clear it, or pass the error on to its caller. Reference Counts ---------------- It takes a while to get used to the proper usage of reference counts. Functions that create an object set the reference count to 1; such new objects must be stored somewhere or destroyed again with Py_DECREF(). Some functions that 'store' objects, such as PyTuple_SetItem() and PyList_SetItem(), don't increment the reference count of the object, since the most frequent use is to store a fresh object. Functions that 'retrieve' objects, such as PyTuple_GetItem() and PyDict_GetItemString(), also don't increment the reference count, since most frequently the object is only looked at quickly. Thus, to retrieve an object and store it again, the caller must call Py_INCREF() explicitly. NOTE: functions that 'consume' a reference count, like PyList_SetItem(), consume the reference even if the object wasn't successfully stored, to simplify error handling. It seems attractive to make other functions that take an object as argument consume a reference count; however, this may quickly get confusing (even the current practice is already confusing). Consider it carefully, it may save lots of calls to Py_INCREF() and Py_DECREF() at times. */ #ifndef Py_LIMITED_API # define Py_CPYTHON_OBJECT_H # include "cpython/object.h" # undef Py_CPYTHON_OBJECT_H #endif static inline int PyType_HasFeature(PyTypeObject *type, unsigned long feature) { unsigned long flags; #ifdef Py_LIMITED_API // PyTypeObject is opaque in the limited C API flags = PyType_GetFlags(type); #else flags = type->tp_flags; #endif return ((flags & feature) != 0); } #define PyType_FastSubclass(type, flag) PyType_HasFeature(type, flag) static inline int _PyType_Check(PyObject *op) { return PyType_FastSubclass(Py_TYPE(op), Py_TPFLAGS_TYPE_SUBCLASS); } #define PyType_Check(op) _PyType_Check(_PyObject_CAST(op)) static inline int _PyType_CheckExact(PyObject *op) { return Py_IS_TYPE(op, &PyType_Type); } #define PyType_CheckExact(op) _PyType_CheckExact(_PyObject_CAST(op)) #ifdef __cplusplus } #endif #endif /* !Py_OBJECT_H */
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