mirror of https://github.com/python/cpython
246 lines
8.1 KiB
C
246 lines
8.1 KiB
C
/* datetime.h
|
|
*/
|
|
|
|
#ifndef DATETIME_H
|
|
#define DATETIME_H
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
/* Fields are packed into successive bytes, each viewed as unsigned and
|
|
* big-endian, unless otherwise noted:
|
|
*
|
|
* byte offset
|
|
* 0 year 2 bytes, 1-9999
|
|
* 2 month 1 byte, 1-12
|
|
* 3 day 1 byte, 1-31
|
|
* 4 hour 1 byte, 0-23
|
|
* 5 minute 1 byte, 0-59
|
|
* 6 second 1 byte, 0-59
|
|
* 7 usecond 3 bytes, 0-999999
|
|
* 10
|
|
*/
|
|
|
|
/* # of bytes for year, month, and day. */
|
|
#define _PyDateTime_DATE_DATASIZE 4
|
|
|
|
/* # of bytes for hour, minute, second, and usecond. */
|
|
#define _PyDateTime_TIME_DATASIZE 6
|
|
|
|
/* # of bytes for year, month, day, hour, minute, second, and usecond. */
|
|
#define _PyDateTime_DATETIME_DATASIZE 10
|
|
|
|
|
|
typedef struct
|
|
{
|
|
PyObject_HEAD
|
|
long hashcode; /* -1 when unknown */
|
|
int days; /* -MAX_DELTA_DAYS <= days <= MAX_DELTA_DAYS */
|
|
int seconds; /* 0 <= seconds < 24*3600 is invariant */
|
|
int microseconds; /* 0 <= microseconds < 1000000 is invariant */
|
|
} PyDateTime_Delta;
|
|
|
|
typedef struct
|
|
{
|
|
PyObject_HEAD /* a pure abstract base clase */
|
|
} PyDateTime_TZInfo;
|
|
|
|
|
|
/* The datetime and time types have hashcodes, and an optional tzinfo member,
|
|
* present if and only if hastzinfo is true.
|
|
*/
|
|
#define _PyTZINFO_HEAD \
|
|
PyObject_HEAD \
|
|
long hashcode; \
|
|
char hastzinfo; /* boolean flag */
|
|
|
|
/* No _PyDateTime_BaseTZInfo is allocated; it's just to have something
|
|
* convenient to cast to, when getting at the hastzinfo member of objects
|
|
* starting with _PyTZINFO_HEAD.
|
|
*/
|
|
typedef struct
|
|
{
|
|
_PyTZINFO_HEAD
|
|
} _PyDateTime_BaseTZInfo;
|
|
|
|
/* All time objects are of PyDateTime_TimeType, but that can be allocated
|
|
* in two ways, with or without a tzinfo member. Without is the same as
|
|
* tzinfo == None, but consumes less memory. _PyDateTime_BaseTime is an
|
|
* internal struct used to allocate the right amount of space for the
|
|
* "without" case.
|
|
*/
|
|
#define _PyDateTime_TIMEHEAD \
|
|
_PyTZINFO_HEAD \
|
|
unsigned char data[_PyDateTime_TIME_DATASIZE];
|
|
|
|
typedef struct
|
|
{
|
|
_PyDateTime_TIMEHEAD
|
|
} _PyDateTime_BaseTime; /* hastzinfo false */
|
|
|
|
typedef struct
|
|
{
|
|
_PyDateTime_TIMEHEAD
|
|
PyObject *tzinfo;
|
|
} PyDateTime_Time; /* hastzinfo true */
|
|
|
|
|
|
/* All datetime objects are of PyDateTime_DateTimeType, but that can be
|
|
* allocated in two ways too, just like for time objects above. In addition,
|
|
* the plain date type is a base class for datetime, so it must also have
|
|
* a hastzinfo member (although it's unused there).
|
|
*/
|
|
typedef struct
|
|
{
|
|
_PyTZINFO_HEAD
|
|
unsigned char data[_PyDateTime_DATE_DATASIZE];
|
|
} PyDateTime_Date;
|
|
|
|
#define _PyDateTime_DATETIMEHEAD \
|
|
_PyTZINFO_HEAD \
|
|
unsigned char data[_PyDateTime_DATETIME_DATASIZE];
|
|
|
|
typedef struct
|
|
{
|
|
_PyDateTime_DATETIMEHEAD
|
|
} _PyDateTime_BaseDateTime; /* hastzinfo false */
|
|
|
|
typedef struct
|
|
{
|
|
_PyDateTime_DATETIMEHEAD
|
|
PyObject *tzinfo;
|
|
} PyDateTime_DateTime; /* hastzinfo true */
|
|
|
|
|
|
/* Apply for date and datetime instances. */
|
|
#define PyDateTime_GET_YEAR(o) ((((PyDateTime_Date*)o)->data[0] << 8) | \
|
|
((PyDateTime_Date*)o)->data[1])
|
|
#define PyDateTime_GET_MONTH(o) (((PyDateTime_Date*)o)->data[2])
|
|
#define PyDateTime_GET_DAY(o) (((PyDateTime_Date*)o)->data[3])
|
|
|
|
#define PyDateTime_DATE_GET_HOUR(o) (((PyDateTime_DateTime*)o)->data[4])
|
|
#define PyDateTime_DATE_GET_MINUTE(o) (((PyDateTime_DateTime*)o)->data[5])
|
|
#define PyDateTime_DATE_GET_SECOND(o) (((PyDateTime_DateTime*)o)->data[6])
|
|
#define PyDateTime_DATE_GET_MICROSECOND(o) \
|
|
((((PyDateTime_DateTime*)o)->data[7] << 16) | \
|
|
(((PyDateTime_DateTime*)o)->data[8] << 8) | \
|
|
((PyDateTime_DateTime*)o)->data[9])
|
|
|
|
/* Apply for time instances. */
|
|
#define PyDateTime_TIME_GET_HOUR(o) (((PyDateTime_Time*)o)->data[0])
|
|
#define PyDateTime_TIME_GET_MINUTE(o) (((PyDateTime_Time*)o)->data[1])
|
|
#define PyDateTime_TIME_GET_SECOND(o) (((PyDateTime_Time*)o)->data[2])
|
|
#define PyDateTime_TIME_GET_MICROSECOND(o) \
|
|
((((PyDateTime_Time*)o)->data[3] << 16) | \
|
|
(((PyDateTime_Time*)o)->data[4] << 8) | \
|
|
((PyDateTime_Time*)o)->data[5])
|
|
|
|
|
|
/* Define structure for C API. */
|
|
typedef struct {
|
|
/* type objects */
|
|
PyTypeObject *DateType;
|
|
PyTypeObject *DateTimeType;
|
|
PyTypeObject *TimeType;
|
|
PyTypeObject *DeltaType;
|
|
PyTypeObject *TZInfoType;
|
|
|
|
/* constructors */
|
|
PyObject *(*Date_FromDate)(int, int, int, PyTypeObject*);
|
|
PyObject *(*DateTime_FromDateAndTime)(int, int, int, int, int, int, int,
|
|
PyObject*, PyTypeObject*);
|
|
PyObject *(*Time_FromTime)(int, int, int, int, PyObject*, PyTypeObject*);
|
|
PyObject *(*Delta_FromDelta)(int, int, int, int, PyTypeObject*);
|
|
|
|
/* constructors for the DB API */
|
|
PyObject *(*DateTime_FromTimestamp)(PyObject*, PyObject*, PyObject*);
|
|
PyObject *(*Date_FromTimestamp)(PyObject*, PyObject*);
|
|
|
|
} PyDateTime_CAPI;
|
|
|
|
|
|
/* "magic" constant used to partially protect against developer mistakes. */
|
|
#define DATETIME_API_MAGIC 0x414548d5
|
|
|
|
#ifdef Py_BUILD_CORE
|
|
|
|
/* Macros for type checking when building the Python core. */
|
|
#define PyDate_Check(op) PyObject_TypeCheck(op, &PyDateTime_DateType)
|
|
#define PyDate_CheckExact(op) (Py_TYPE(op) == &PyDateTime_DateType)
|
|
|
|
#define PyDateTime_Check(op) PyObject_TypeCheck(op, &PyDateTime_DateTimeType)
|
|
#define PyDateTime_CheckExact(op) (Py_TYPE(op) == &PyDateTime_DateTimeType)
|
|
|
|
#define PyTime_Check(op) PyObject_TypeCheck(op, &PyDateTime_TimeType)
|
|
#define PyTime_CheckExact(op) (Py_TYPE(op) == &PyDateTime_TimeType)
|
|
|
|
#define PyDelta_Check(op) PyObject_TypeCheck(op, &PyDateTime_DeltaType)
|
|
#define PyDelta_CheckExact(op) (Py_TYPE(op) == &PyDateTime_DeltaType)
|
|
|
|
#define PyTZInfo_Check(op) PyObject_TypeCheck(op, &PyDateTime_TZInfoType)
|
|
#define PyTZInfo_CheckExact(op) (Py_TYPE(op) == &PyDateTime_TZInfoType)
|
|
|
|
#else
|
|
|
|
/* Define global variable for the C API and a macro for setting it. */
|
|
static PyDateTime_CAPI *PyDateTimeAPI;
|
|
|
|
#define PyDateTime_IMPORT \
|
|
PyDateTimeAPI = (PyDateTime_CAPI*) PyCObject_Import("datetime", \
|
|
"datetime_CAPI")
|
|
|
|
/* This macro would be used if PyCObject_ImportEx() was created.
|
|
#define PyDateTime_IMPORT \
|
|
PyDateTimeAPI = (PyDateTime_CAPI*) PyCObject_ImportEx("datetime", \
|
|
"datetime_CAPI", \
|
|
DATETIME_API_MAGIC)
|
|
*/
|
|
|
|
/* Macros for type checking when not building the Python core. */
|
|
#define PyDate_Check(op) PyObject_TypeCheck(op, PyDateTimeAPI->DateType)
|
|
#define PyDate_CheckExact(op) (Py_TYPE(op) == PyDateTimeAPI->DateType)
|
|
|
|
#define PyDateTime_Check(op) PyObject_TypeCheck(op, PyDateTimeAPI->DateTimeType)
|
|
#define PyDateTime_CheckExact(op) (Py_TYPE(op) == PyDateTimeAPI->DateTimeType)
|
|
|
|
#define PyTime_Check(op) PyObject_TypeCheck(op, PyDateTimeAPI->TimeType)
|
|
#define PyTime_CheckExact(op) (Py_TYPE(op) == PyDateTimeAPI->TimeType)
|
|
|
|
#define PyDelta_Check(op) PyObject_TypeCheck(op, PyDateTimeAPI->DeltaType)
|
|
#define PyDelta_CheckExact(op) (Py_TYPE(op) == PyDateTimeAPI->DeltaType)
|
|
|
|
#define PyTZInfo_Check(op) PyObject_TypeCheck(op, PyDateTimeAPI->TZInfoType)
|
|
#define PyTZInfo_CheckExact(op) (Py_TYPE(op) == PyDateTimeAPI->TZInfoType)
|
|
|
|
/* Macros for accessing constructors in a simplified fashion. */
|
|
#define PyDate_FromDate(year, month, day) \
|
|
PyDateTimeAPI->Date_FromDate(year, month, day, PyDateTimeAPI->DateType)
|
|
|
|
#define PyDateTime_FromDateAndTime(year, month, day, hour, min, sec, usec) \
|
|
PyDateTimeAPI->DateTime_FromDateAndTime(year, month, day, hour, \
|
|
min, sec, usec, Py_None, PyDateTimeAPI->DateTimeType)
|
|
|
|
#define PyTime_FromTime(hour, minute, second, usecond) \
|
|
PyDateTimeAPI->Time_FromTime(hour, minute, second, usecond, \
|
|
Py_None, PyDateTimeAPI->TimeType)
|
|
|
|
#define PyDelta_FromDSU(days, seconds, useconds) \
|
|
PyDateTimeAPI->Delta_FromDelta(days, seconds, useconds, 1, \
|
|
PyDateTimeAPI->DeltaType)
|
|
|
|
/* Macros supporting the DB API. */
|
|
#define PyDateTime_FromTimestamp(args) \
|
|
PyDateTimeAPI->DateTime_FromTimestamp( \
|
|
(PyObject*) (PyDateTimeAPI->DateTimeType), args, NULL)
|
|
|
|
#define PyDate_FromTimestamp(args) \
|
|
PyDateTimeAPI->Date_FromTimestamp( \
|
|
(PyObject*) (PyDateTimeAPI->DateType), args)
|
|
|
|
#endif /* Py_BUILD_CORE */
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
#endif
|