mirror of
https://github.com/python/cpython.git
synced 2025-07-31 07:04:42 +00:00
ee3a1b5244
of some of the common builtin types. Use a bit in tp_flags for each common builtin type. Check the bit to determine if any instance is a subclass of these common types. The check avoids a function call and O(n) search of the base classes. The check is done in the various Py*_Check macros rather than calling PyType_IsSubtype(). All the bits are set in tp_flags when the type is declared in the Objects/*object.c files because PyType_Ready() is not called for all the types. Should PyType_Ready() be called for all types? If so and the change is made, the changes to the Objects/*object.c files can be reverted (remove setting the tp_flags). Objects/typeobject.c would also have to be modified to add conditions for Py*_CheckExact() in addition to each the PyType_IsSubtype check.
65 lines
2.1 KiB
C
65 lines
2.1 KiB
C
|
|
/* Integer object interface */
|
|
|
|
/*
|
|
PyIntObject represents a (long) integer. This is an immutable object;
|
|
an integer cannot change its value after creation.
|
|
|
|
There are functions to create new integer objects, to test an object
|
|
for integer-ness, and to get the integer value. The latter functions
|
|
returns -1 and sets errno to EBADF if the object is not an PyIntObject.
|
|
None of the functions should be applied to nil objects.
|
|
|
|
The type PyIntObject is (unfortunately) exposed here so we can declare
|
|
_Py_TrueStruct and _Py_ZeroStruct in boolobject.h; don't use this.
|
|
*/
|
|
|
|
#ifndef Py_INTOBJECT_H
|
|
#define Py_INTOBJECT_H
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
typedef struct {
|
|
PyObject_HEAD
|
|
long ob_ival;
|
|
} PyIntObject;
|
|
|
|
PyAPI_DATA(PyTypeObject) PyInt_Type;
|
|
|
|
#define PyInt_Check(op) \
|
|
PyType_FastSubclass((op)->ob_type, Py_TPFLAGS_INT_SUBCLASS)
|
|
#define PyInt_CheckExact(op) ((op)->ob_type == &PyInt_Type)
|
|
|
|
PyAPI_FUNC(PyObject *) PyInt_FromString(char*, char**, int);
|
|
#ifdef Py_USING_UNICODE
|
|
PyAPI_FUNC(PyObject *) PyInt_FromUnicode(Py_UNICODE*, Py_ssize_t, int);
|
|
#endif
|
|
PyAPI_FUNC(PyObject *) PyInt_FromLong(long);
|
|
PyAPI_FUNC(PyObject *) PyInt_FromSize_t(size_t);
|
|
PyAPI_FUNC(PyObject *) PyInt_FromSsize_t(Py_ssize_t);
|
|
PyAPI_FUNC(long) PyInt_AsLong(PyObject *);
|
|
PyAPI_FUNC(Py_ssize_t) PyInt_AsSsize_t(PyObject *);
|
|
PyAPI_FUNC(unsigned long) PyInt_AsUnsignedLongMask(PyObject *);
|
|
#ifdef HAVE_LONG_LONG
|
|
PyAPI_FUNC(unsigned PY_LONG_LONG) PyInt_AsUnsignedLongLongMask(PyObject *);
|
|
#endif
|
|
|
|
PyAPI_FUNC(long) PyInt_GetMax(void);
|
|
|
|
/* Macro, trading safety for speed */
|
|
#define PyInt_AS_LONG(op) (((PyIntObject *)(op))->ob_ival)
|
|
|
|
/* These aren't really part of the Int object, but they're handy; the protos
|
|
* are necessary for systems that need the magic of PyAPI_FUNC and that want
|
|
* to have stropmodule as a dynamically loaded module instead of building it
|
|
* into the main Python shared library/DLL. Guido thinks I'm weird for
|
|
* building it this way. :-) [cjh]
|
|
*/
|
|
PyAPI_FUNC(unsigned long) PyOS_strtoul(char *, char **, int);
|
|
PyAPI_FUNC(long) PyOS_strtol(char *, char **, int);
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
#endif /* !Py_INTOBJECT_H */
|