/* 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 class */ | |
} 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; | |
#define PyDateTime_CAPSULE_NAME "datetime.datetime_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 = NULL; | |
#define PyDateTime_IMPORT \ | |
PyDateTimeAPI = (PyDateTime_CAPI *)PyCapsule_Import(PyDateTime_CAPSULE_NAME, 0) | |
/* 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 |