1 /*-------------------------------------------------------------------------
2  *
3  * postgres_ext.h
4  *
5  *	   This file contains declarations of things that are visible everywhere
6  *	in PostgreSQL *and* are visible to clients of frontend interface libraries.
7  *	For example, the Oid type is part of the API of libpq and other libraries.
8  *
9  *	   Declarations which are specific to a particular interface should
10  *	go in the header file for that interface (such as libpq-fe.h).  This
11  *	file is only for fundamental Postgres declarations.
12  *
13  *	   User-written C functions don't count as "external to Postgres."
14  *	Those function much as local modifications to the backend itself, and
15  *	use header files that are otherwise internal to Postgres to interface
16  *	with the backend.
17  *
18  * src/include/postgres_ext.h
19  *
20  *-------------------------------------------------------------------------
21  */
22 
23 #ifndef POSTGRES_EXT_H
24 #define POSTGRES_EXT_H
25 
26 #include "pg_config_ext.h"
27 
28 /*
29  * Object ID is a fundamental type in Postgres.
30  */
31 typedef unsigned int Oid;
32 
33 #ifdef __cplusplus
34 #define InvalidOid		(Oid(0))
35 #else
36 #define InvalidOid		((Oid) 0)
37 #endif
38 
39 #define OID_MAX  UINT_MAX
40 /* you will need to include <limits.h> to use the above #define */
41 
42 #define atooid(x) ((Oid) strtoul((x), NULL, 10))
43 /* the above needs <stdlib.h> */
44 
45 
46 /* Define a signed 64-bit integer type for use in client API declarations. */
47 typedef PG_INT64_TYPE pg_int64;
48 
49 
50 /*
51  * Identifiers of error message fields.  Kept here to keep common
52  * between frontend and backend, and also to export them to libpq
53  * applications.
54  */
55 #define PG_DIAG_SEVERITY		'S'
56 #define PG_DIAG_SEVERITY_NONLOCALIZED 'V'
57 #define PG_DIAG_SQLSTATE		'C'
58 #define PG_DIAG_MESSAGE_PRIMARY 'M'
59 #define PG_DIAG_MESSAGE_DETAIL	'D'
60 #define PG_DIAG_MESSAGE_HINT	'H'
61 #define PG_DIAG_STATEMENT_POSITION 'P'
62 #define PG_DIAG_INTERNAL_POSITION 'p'
63 #define PG_DIAG_INTERNAL_QUERY	'q'
64 #define PG_DIAG_CONTEXT			'W'
65 #define PG_DIAG_SCHEMA_NAME		's'
66 #define PG_DIAG_TABLE_NAME		't'
67 #define PG_DIAG_COLUMN_NAME		'c'
68 #define PG_DIAG_DATATYPE_NAME	'd'
69 #define PG_DIAG_CONSTRAINT_NAME 'n'
70 #define PG_DIAG_SOURCE_FILE		'F'
71 #define PG_DIAG_SOURCE_LINE		'L'
72 #define PG_DIAG_SOURCE_FUNCTION 'R'
73 
74 #endif							/* POSTGRES_EXT_H */
75