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[postgresql] / src / include / catalog / pg_enum.h
1 /*-------------------------------------------------------------------------
2  *
3  * pg_enum.h
4  *        definition of the "enum" system catalog (pg_enum)
5  *
6  *
7  * Portions Copyright (c) 1996-2019, PostgreSQL Global Development Group
8  * Portions Copyright (c) 1994, Regents of the University of California
9  *
10  * src/include/catalog/pg_enum.h
11  *
12  * NOTES
13  *        The Catalog.pm module reads this file and derives schema
14  *        information.
15  *
16  *-------------------------------------------------------------------------
17  */
18 #ifndef PG_ENUM_H
19 #define PG_ENUM_H
20
21 #include "catalog/genbki.h"
22 #include "catalog/pg_enum_d.h"
23
24 #include "nodes/pg_list.h"
25
26 /* ----------------
27  *              pg_enum definition.  cpp turns this into
28  *              typedef struct FormData_pg_enum
29  * ----------------
30  */
31 CATALOG(pg_enum,3501,EnumRelationId)
32 {
33         Oid                     oid;                    /* oid */
34         Oid                     enumtypid;              /* OID of owning enum type */
35         float4          enumsortorder;  /* sort position of this enum value */
36         NameData        enumlabel;              /* text representation of enum value */
37 } FormData_pg_enum;
38
39 /* ----------------
40  *              Form_pg_enum corresponds to a pointer to a tuple with
41  *              the format of pg_enum relation.
42  * ----------------
43  */
44 typedef FormData_pg_enum *Form_pg_enum;
45
46 /*
47  * prototypes for functions in pg_enum.c
48  */
49 extern void EnumValuesCreate(Oid enumTypeOid, List *vals);
50 extern void EnumValuesDelete(Oid enumTypeOid);
51 extern void AddEnumLabel(Oid enumTypeOid, const char *newVal,
52                          const char *neighbor, bool newValIsAfter,
53                          bool skipIfExists);
54 extern void RenameEnumLabel(Oid enumTypeOid,
55                                 const char *oldVal, const char *newVal);
56 extern bool EnumBlacklisted(Oid enum_id);
57 extern Size EstimateEnumBlacklistSpace(void);
58 extern void SerializeEnumBlacklist(void *space, Size size);
59 extern void RestoreEnumBlacklist(void *space);
60 extern void AtEOXact_Enum(void);
61
62 #endif                                                  /* PG_ENUM_H */