1 files changed, 188 insertions, 0 deletions
diff --git a/src/include/catalog/namespace.h b/src/include/catalog/namespace.h
new file mode 100644
index 0000000..2456c08
--- /dev/null
+++ b/src/include/catalog/namespace.h
@@ -0,0 +1,188 @@
+/*-------------------------------------------------------------------------
+ *
+ * namespace.h
+ *	  prototypes for functions in backend/catalog/namespace.c
+ *
+ *
+ * Portions Copyright (c) 1996-2020, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * src/include/catalog/namespace.h
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef NAMESPACE_H
+#define NAMESPACE_H
+
+#include "nodes/primnodes.h"
+#include "storage/lock.h"
+
+
+/*
+ *	This structure holds a list of possible functions or operators
+ *	found by namespace lookup.  Each function/operator is identified
+ *	by OID and by argument types; the list must be pruned by type
+ *	resolution rules that are embodied in the parser, not here.
+ *	See FuncnameGetCandidates's comments for more info.
+ */
+typedef struct _FuncCandidateList
+{
+	struct _FuncCandidateList *next;
+	int			pathpos;		/* for internal use of namespace lookup */
+	Oid			oid;			/* the function or operator's OID */
+	int			nargs;			/* number of arg types returned */
+	int			nvargs;			/* number of args to become variadic array */
+	int			ndargs;			/* number of defaulted args */
+	int		   *argnumbers;		/* args' positional indexes, if named call */
+	Oid			args[FLEXIBLE_ARRAY_MEMBER];	/* arg types */
+}		   *FuncCandidateList;
+
+/*
+ * Result of checkTempNamespaceStatus
+ */
+typedef enum TempNamespaceStatus
+{
+	TEMP_NAMESPACE_NOT_TEMP,	/* nonexistent, or non-temp namespace */
+	TEMP_NAMESPACE_IDLE,		/* exists, belongs to no active session */
+	TEMP_NAMESPACE_IN_USE		/* belongs to some active session */
+} TempNamespaceStatus;
+
+/*
+ *	Structure for xxxOverrideSearchPath functions
+ *
+ * The generation counter is private to namespace.c and shouldn't be touched
+ * by other code.  It can be initialized to zero if necessary (that means
+ * "not known equal to the current active path").
+ */
+typedef struct OverrideSearchPath
+{
+	List	   *schemas;		/* OIDs of explicitly named schemas */
+	bool		addCatalog;		/* implicitly prepend pg_catalog? */
+	bool		addTemp;		/* implicitly prepend temp schema? */
+	uint64		generation;		/* for quick detection of equality to active */
+} OverrideSearchPath;
+
+/*
+ * Option flag bits for RangeVarGetRelidExtended().
+ */
+typedef enum RVROption
+{
+	RVR_MISSING_OK = 1 << 0,	/* don't error if relation doesn't exist */
+	RVR_NOWAIT = 1 << 1,		/* error if relation cannot be locked */
+	RVR_SKIP_LOCKED = 1 << 2	/* skip if relation cannot be locked */
+} RVROption;
+
+typedef void (*RangeVarGetRelidCallback) (const RangeVar *relation, Oid relId,
+										  Oid oldRelId, void *callback_arg);
+
+#define RangeVarGetRelid(relation, lockmode, missing_ok) \
+	RangeVarGetRelidExtended(relation, lockmode, \
+							 (missing_ok) ? RVR_MISSING_OK : 0, NULL, NULL)
+
+extern Oid	RangeVarGetRelidExtended(const RangeVar *relation,
+									 LOCKMODE lockmode, uint32 flags,
+									 RangeVarGetRelidCallback callback,
+									 void *callback_arg);
+extern Oid	RangeVarGetCreationNamespace(const RangeVar *newRelation);
+extern Oid	RangeVarGetAndCheckCreationNamespace(RangeVar *newRelation,
+												 LOCKMODE lockmode,
+												 Oid *existing_relation_id);
+extern void RangeVarAdjustRelationPersistence(RangeVar *newRelation, Oid nspid);
+extern Oid	RelnameGetRelid(const char *relname);
+extern bool RelationIsVisible(Oid relid);
+
+extern Oid	TypenameGetTypid(const char *typname);
+extern Oid	TypenameGetTypidExtended(const char *typname, bool temp_ok);
+extern bool TypeIsVisible(Oid typid);
+
+extern FuncCandidateList FuncnameGetCandidates(List *names,
+											   int nargs, List *argnames,
+											   bool expand_variadic,
+											   bool expand_defaults,
+											   bool missing_ok);
+extern bool FunctionIsVisible(Oid funcid);
+
+extern Oid	OpernameGetOprid(List *names, Oid oprleft, Oid oprright);
+extern FuncCandidateList OpernameGetCandidates(List *names, char oprkind,
+											   bool missing_schema_ok);
+extern bool OperatorIsVisible(Oid oprid);
+
+extern Oid	OpclassnameGetOpcid(Oid amid, const char *opcname);
+extern bool OpclassIsVisible(Oid opcid);
+
+extern Oid	OpfamilynameGetOpfid(Oid amid, const char *opfname);
+extern bool OpfamilyIsVisible(Oid opfid);
+
+extern Oid	CollationGetCollid(const char *collname);
+extern bool CollationIsVisible(Oid collid);
+
+extern Oid	ConversionGetConid(const char *conname);
+extern bool ConversionIsVisible(Oid conid);
+
+extern Oid	get_statistics_object_oid(List *names, bool missing_ok);
+extern bool StatisticsObjIsVisible(Oid relid);
+
+extern Oid	get_ts_parser_oid(List *names, bool missing_ok);
+extern bool TSParserIsVisible(Oid prsId);
+
+extern Oid	get_ts_dict_oid(List *names, bool missing_ok);
+extern bool TSDictionaryIsVisible(Oid dictId);
+
+extern Oid	get_ts_template_oid(List *names, bool missing_ok);
+extern bool TSTemplateIsVisible(Oid tmplId);
+
+extern Oid	get_ts_config_oid(List *names, bool missing_ok);
+extern bool TSConfigIsVisible(Oid cfgid);
+
+extern void DeconstructQualifiedName(List *names,
+									 char **nspname_p,
+									 char **objname_p);
+extern Oid	LookupNamespaceNoError(const char *nspname);
+extern Oid	LookupExplicitNamespace(const char *nspname, bool missing_ok);
+extern Oid	get_namespace_oid(const char *nspname, bool missing_ok);
+
+extern Oid	LookupCreationNamespace(const char *nspname);
+extern void CheckSetNamespace(Oid oldNspOid, Oid nspOid);
+extern Oid	QualifiedNameGetCreationNamespace(List *names, char **objname_p);
+extern RangeVar *makeRangeVarFromNameList(List *names);
+extern char *NameListToString(List *names);
+extern char *NameListToQuotedString(List *names);
+
+extern bool isTempNamespace(Oid namespaceId);
+extern bool isTempToastNamespace(Oid namespaceId);
+extern bool isTempOrTempToastNamespace(Oid namespaceId);
+extern bool isAnyTempNamespace(Oid namespaceId);
+extern bool isOtherTempNamespace(Oid namespaceId);
+extern TempNamespaceStatus checkTempNamespaceStatus(Oid namespaceId);
+extern int	GetTempNamespaceBackendId(Oid namespaceId);
+extern Oid	GetTempToastNamespace(void);
+extern void GetTempNamespaceState(Oid *tempNamespaceId,
+								  Oid *tempToastNamespaceId);
+extern void SetTempNamespaceState(Oid tempNamespaceId,
+								  Oid tempToastNamespaceId);
+extern void ResetTempTableNamespace(void);
+
+extern OverrideSearchPath *GetOverrideSearchPath(MemoryContext context);
+extern OverrideSearchPath *CopyOverrideSearchPath(OverrideSearchPath *path);
+extern bool OverrideSearchPathMatchesCurrent(OverrideSearchPath *path);
+extern void PushOverrideSearchPath(OverrideSearchPath *newpath);
+extern void PopOverrideSearchPath(void);
+
+extern Oid	get_collation_oid(List *collname, bool missing_ok);
+extern Oid	get_conversion_oid(List *conname, bool missing_ok);
+extern Oid	FindDefaultConversionProc(int32 for_encoding, int32 to_encoding);
+
+
+/* initialization & transaction cleanup code */
+extern void InitializeSearchPath(void);
+extern void AtEOXact_Namespace(bool isCommit, bool parallel);
+extern void AtEOSubXact_Namespace(bool isCommit, SubTransactionId mySubid,
+								  SubTransactionId parentSubid);
+
+/* stuff for search_path GUC variable */
+extern char *namespace_search_path;
+
+extern List *fetch_search_path(bool includeImplicit);
+extern int	fetch_search_path_array(Oid *sarray, int sarray_len);
+
+#endif							/* NAMESPACE_H */