1 /*-------------------------------------------------------------------------
2  *
3  * pg_enum.h
4  *	  definition of the "enum" system catalog (pg_enum)
5  *
6  *
7  * Portions Copyright (c) 1996-2018, 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			enumtypid;		/* OID of owning enum type */
34 	float4		enumsortorder;	/* sort position of this enum value */
35 	NameData	enumlabel;		/* text representation of enum value */
36 } FormData_pg_enum;
37 
38 /* ----------------
39  *		Form_pg_enum corresponds to a pointer to a tuple with
40  *		the format of pg_enum relation.
41  * ----------------
42  */
43 typedef FormData_pg_enum *Form_pg_enum;
44 
45 /*
46  * prototypes for functions in pg_enum.c
47  */
48 extern void EnumValuesCreate(Oid enumTypeOid, List *vals);
49 extern void EnumValuesDelete(Oid enumTypeOid);
50 extern void AddEnumLabel(Oid enumTypeOid, const char *newVal,
51 			 const char *neighbor, bool newValIsAfter,
52 			 bool skipIfExists);
53 extern void RenameEnumLabel(Oid enumTypeOid,
54 				const char *oldVal, const char *newVal);
55 
56 #endif							/* PG_ENUM_H */
57