mirror of
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64b5ce3a69
Given an immutable type M, and an instance I of a subclass of M, the
constructor call M(I) was just returning I as-is; but it should return a
new instance of M. This fixes it for M in {int, long}. Strings, floats
and tuples remain to be done.
Added new macros PyInt_CheckExact and PyLong_CheckExact, to more easily
distinguish between "is" and "is a" (i.e., only an int passes
PyInt_CheckExact, while any sublass of int passes PyInt_Check).
Added private API function _PyLong_Copy.
72 lines
2.3 KiB
C
72 lines
2.3 KiB
C
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/* Integer object interface */
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/*
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PyIntObject represents a (long) integer. This is an immutable object;
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an integer cannot change its value after creation.
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There are functions to create new integer objects, to test an object
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for integer-ness, and to get the integer value. The latter functions
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returns -1 and sets errno to EBADF if the object is not an PyIntObject.
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None of the functions should be applied to nil objects.
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The type PyIntObject is (unfortunately) exposed here so we can declare
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_Py_TrueStruct and _Py_ZeroStruct below; don't use this.
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*/
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#ifndef Py_INTOBJECT_H
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#define Py_INTOBJECT_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef struct {
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PyObject_HEAD
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long ob_ival;
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} PyIntObject;
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extern DL_IMPORT(PyTypeObject) PyInt_Type;
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#define PyInt_Check(op) PyObject_TypeCheck(op, &PyInt_Type)
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#define PyInt_CheckExact(op) ((op)->ob_type == &PyInt_Type)
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extern DL_IMPORT(PyObject *) PyInt_FromString(char*, char**, int);
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#ifdef Py_USING_UNICODE
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extern DL_IMPORT(PyObject *) PyInt_FromUnicode(Py_UNICODE*, int, int);
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#endif
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extern DL_IMPORT(PyObject *) PyInt_FromLong(long);
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extern DL_IMPORT(long) PyInt_AsLong(PyObject *);
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extern DL_IMPORT(long) PyInt_GetMax(void);
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/*
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False and True are special intobjects used by Boolean expressions.
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All values of type Boolean must point to either of these; but in
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contexts where integers are required they are integers (valued 0 and 1).
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Hope these macros don't conflict with other people's.
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Don't forget to apply Py_INCREF() when returning True or False!!!
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*/
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extern DL_IMPORT(PyIntObject) _Py_ZeroStruct, _Py_TrueStruct; /* Don't use these directly */
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#define Py_False ((PyObject *) &_Py_ZeroStruct)
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#define Py_True ((PyObject *) &_Py_TrueStruct)
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/* Macro, trading safety for speed */
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#define PyInt_AS_LONG(op) (((PyIntObject *)(op))->ob_ival)
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/* These aren't really part of the Int object, but they're handy; the protos
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* are necessary for systems that need the magic of DL_IMPORT and that want
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* to have stropmodule as a dynamically loaded module instead of building it
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* into the main Python shared library/DLL. Guido thinks I'm weird for
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* building it this way. :-) [cjh]
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*/
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extern DL_IMPORT(unsigned long) PyOS_strtoul(char *, char **, int);
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extern DL_IMPORT(long) PyOS_strtol(char *, char **, int);
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#ifdef __cplusplus
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}
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#endif
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#endif /* !Py_INTOBJECT_H */
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