mirror of
https://git.postgresql.org/git/postgresql.git
synced 2026-02-07 17:47:37 +08:00
cc4feded0a
The creates a single function JsonEncodeDateTime which will format these data types in an efficient and consistent manner. This will be all the more important when we come to jsonpath so we don't have to implement yet more code doing the same thing in two more places. This also extends the code to handle time and timetz types which were not previously handled specially. This requires exposing the time2tm and timetz2tm functions. Patch from Nikita Glukhov
80 lines
2.5 KiB
C
80 lines
2.5 KiB
C
/*-------------------------------------------------------------------------
|
|
*
|
|
* date.h
|
|
* Definitions for the SQL "date" and "time" types.
|
|
*
|
|
*
|
|
* Portions Copyright (c) 1996-2018, PostgreSQL Global Development Group
|
|
* Portions Copyright (c) 1994, Regents of the University of California
|
|
*
|
|
* src/include/utils/date.h
|
|
*
|
|
*-------------------------------------------------------------------------
|
|
*/
|
|
#ifndef DATE_H
|
|
#define DATE_H
|
|
|
|
#include <math.h>
|
|
|
|
#include "fmgr.h"
|
|
#include "datatype/timestamp.h"
|
|
|
|
typedef int32 DateADT;
|
|
|
|
typedef int64 TimeADT;
|
|
|
|
typedef struct
|
|
{
|
|
TimeADT time; /* all time units other than months and years */
|
|
int32 zone; /* numeric time zone, in seconds */
|
|
} TimeTzADT;
|
|
|
|
/*
|
|
* Infinity and minus infinity must be the max and min values of DateADT.
|
|
*/
|
|
#define DATEVAL_NOBEGIN ((DateADT) PG_INT32_MIN)
|
|
#define DATEVAL_NOEND ((DateADT) PG_INT32_MAX)
|
|
|
|
#define DATE_NOBEGIN(j) ((j) = DATEVAL_NOBEGIN)
|
|
#define DATE_IS_NOBEGIN(j) ((j) == DATEVAL_NOBEGIN)
|
|
#define DATE_NOEND(j) ((j) = DATEVAL_NOEND)
|
|
#define DATE_IS_NOEND(j) ((j) == DATEVAL_NOEND)
|
|
#define DATE_NOT_FINITE(j) (DATE_IS_NOBEGIN(j) || DATE_IS_NOEND(j))
|
|
|
|
/*
|
|
* Macros for fmgr-callable functions.
|
|
*
|
|
* For TimeADT, we make use of the same support routines as for int64.
|
|
* Therefore TimeADT is pass-by-reference if and only if int64 is!
|
|
*/
|
|
#define MAX_TIME_PRECISION 6
|
|
|
|
#define DatumGetDateADT(X) ((DateADT) DatumGetInt32(X))
|
|
#define DatumGetTimeADT(X) ((TimeADT) DatumGetInt64(X))
|
|
#define DatumGetTimeTzADTP(X) ((TimeTzADT *) DatumGetPointer(X))
|
|
|
|
#define DateADTGetDatum(X) Int32GetDatum(X)
|
|
#define TimeADTGetDatum(X) Int64GetDatum(X)
|
|
#define TimeTzADTPGetDatum(X) PointerGetDatum(X)
|
|
|
|
#define PG_GETARG_DATEADT(n) DatumGetDateADT(PG_GETARG_DATUM(n))
|
|
#define PG_GETARG_TIMEADT(n) DatumGetTimeADT(PG_GETARG_DATUM(n))
|
|
#define PG_GETARG_TIMETZADT_P(n) DatumGetTimeTzADTP(PG_GETARG_DATUM(n))
|
|
|
|
#define PG_RETURN_DATEADT(x) return DateADTGetDatum(x)
|
|
#define PG_RETURN_TIMEADT(x) return TimeADTGetDatum(x)
|
|
#define PG_RETURN_TIMETZADT_P(x) return TimeTzADTPGetDatum(x)
|
|
|
|
|
|
/* date.c */
|
|
extern int32 anytime_typmod_check(bool istz, int32 typmod);
|
|
extern double date2timestamp_no_overflow(DateADT dateVal);
|
|
extern void EncodeSpecialDate(DateADT dt, char *str);
|
|
extern DateADT GetSQLCurrentDate(void);
|
|
extern TimeTzADT *GetSQLCurrentTime(int32 typmod);
|
|
extern TimeADT GetSQLLocalTime(int32 typmod);
|
|
extern int time2tm(TimeADT time, struct pg_tm *tm, fsec_t *fsec);
|
|
extern int timetz2tm(TimeTzADT *time, struct pg_tm *tm, fsec_t *fsec, int *tzp);
|
|
|
|
#endif /* DATE_H */
|