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datetime.h
/* datetime.h */ #ifndef Py_LIMITED_API #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 Py_hash_t 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 \ Py_hash_t 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 unsigned char fold; 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 unsigned char fold; PyObject *tzinfo; } PyDateTime_DateTime; /* hastzinfo true */ /* Apply for date and datetime instances. */ // o is a pointer to a time or a datetime object. #define _PyDateTime_HAS_TZINFO(o) (((_PyDateTime_BaseTZInfo *)(o))->hastzinfo) #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]) #define PyDateTime_DATE_GET_FOLD(o) (((PyDateTime_DateTime*)(o))->fold) #define PyDateTime_DATE_GET_TZINFO(o) (_PyDateTime_HAS_TZINFO((o)) ? \ ((PyDateTime_DateTime *)(o))->tzinfo : Py_None) /* 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 PyDateTime_TIME_GET_FOLD(o) (((PyDateTime_Time*)(o))->fold) #define PyDateTime_TIME_GET_TZINFO(o) (_PyDateTime_HAS_TZINFO(o) ? \ ((PyDateTime_Time *)(o))->tzinfo : Py_None) /* Apply for time delta instances */ #define PyDateTime_DELTA_GET_DAYS(o) (((PyDateTime_Delta*)(o))->days) #define PyDateTime_DELTA_GET_SECONDS(o) (((PyDateTime_Delta*)(o))->seconds) #define PyDateTime_DELTA_GET_MICROSECONDS(o) \ (((PyDateTime_Delta*)(o))->microseconds) /* Define structure for C API. */ typedef struct { /* type objects */ PyTypeObject *DateType; PyTypeObject *DateTimeType; PyTypeObject *TimeType; PyTypeObject *DeltaType; PyTypeObject *TZInfoType; /* singletons */ PyObject *TimeZone_UTC; /* 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*); PyObject *(*TimeZone_FromTimeZone)(PyObject *offset, PyObject *name); /* constructors for the DB API */ PyObject *(*DateTime_FromTimestamp)(PyObject*, PyObject*, PyObject*); PyObject *(*Date_FromTimestamp)(PyObject*, PyObject*); /* PEP 495 constructors */ PyObject *(*DateTime_FromDateAndTimeAndFold)(int, int, int, int, int, int, int, PyObject*, int, PyTypeObject*); PyObject *(*Time_FromTimeAndFold)(int, int, int, int, PyObject*, int, PyTypeObject*); } PyDateTime_CAPI; #define PyDateTime_CAPSULE_NAME "datetime.datetime_CAPI" /* This block is only used as part of the public API and should not be * included in _datetimemodule.c, which does not use the C API capsule. * See bpo-35081 for more details. * */ #ifndef _PY_DATETIME_IMPL /* 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) /* Macro for access to the UTC singleton */ #define PyDateTime_TimeZone_UTC PyDateTimeAPI->TimeZone_UTC /* Macros for type checking when not building the Python core. */ #define PyDate_Check(op) PyObject_TypeCheck((op), PyDateTimeAPI->DateType) #define PyDate_CheckExact(op) Py_IS_TYPE((op), PyDateTimeAPI->DateType) #define PyDateTime_Check(op) PyObject_TypeCheck((op), PyDateTimeAPI->DateTimeType) #define PyDateTime_CheckExact(op) Py_IS_TYPE((op), PyDateTimeAPI->DateTimeType) #define PyTime_Check(op) PyObject_TypeCheck((op), PyDateTimeAPI->TimeType) #define PyTime_CheckExact(op) Py_IS_TYPE((op), PyDateTimeAPI->TimeType) #define PyDelta_Check(op) PyObject_TypeCheck((op), PyDateTimeAPI->DeltaType) #define PyDelta_CheckExact(op) Py_IS_TYPE((op), PyDateTimeAPI->DeltaType) #define PyTZInfo_Check(op) PyObject_TypeCheck((op), PyDateTimeAPI->TZInfoType) #define PyTZInfo_CheckExact(op) Py_IS_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 PyDateTime_FromDateAndTimeAndFold(year, month, day, hour, min, sec, usec, fold) \ PyDateTimeAPI->DateTime_FromDateAndTimeAndFold((year), (month), (day), (hour), \ (min), (sec), (usec), Py_None, (fold), PyDateTimeAPI->DateTimeType) #define PyTime_FromTime(hour, minute, second, usecond) \ PyDateTimeAPI->Time_FromTime((hour), (minute), (second), (usecond), \ Py_None, PyDateTimeAPI->TimeType) #define PyTime_FromTimeAndFold(hour, minute, second, usecond, fold) \ PyDateTimeAPI->Time_FromTimeAndFold((hour), (minute), (second), (usecond), \ Py_None, (fold), PyDateTimeAPI->TimeType) #define PyDelta_FromDSU(days, seconds, useconds) \ PyDateTimeAPI->Delta_FromDelta((days), (seconds), (useconds), 1, \ PyDateTimeAPI->DeltaType) #define PyTimeZone_FromOffset(offset) \ PyDateTimeAPI->TimeZone_FromTimeZone((offset), NULL) #define PyTimeZone_FromOffsetAndName(offset, name) \ PyDateTimeAPI->TimeZone_FromTimeZone((offset), (name)) /* 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 /* !defined(_PY_DATETIME_IMPL) */ #ifdef __cplusplus } #endif #endif #endif /* !Py_LIMITED_API */
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