1 files changed, 74 insertions, 0 deletions
diff --git a/src/include/parser/parse_func.h b/src/include/parser/parse_func.h
new file mode 100644
index 0000000..57795a8
--- /dev/null
+++ b/src/include/parser/parse_func.h
@@ -0,0 +1,74 @@
+/*-------------------------------------------------------------------------
+ *
+ * parse_func.h
+ *
+ *
+ *
+ * Portions Copyright (c) 1996-2021, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * src/include/parser/parse_func.h
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef PARSE_FUNC_H
+#define PARSE_FUNC_H
+
+#include "catalog/namespace.h"
+#include "parser/parse_node.h"
+
+
+/* Result codes for func_get_detail */
+typedef enum
+{
+	FUNCDETAIL_NOTFOUND,		/* no matching function */
+	FUNCDETAIL_MULTIPLE,		/* too many matching functions */
+	FUNCDETAIL_NORMAL,			/* found a matching regular function */
+	FUNCDETAIL_PROCEDURE,		/* found a matching procedure */
+	FUNCDETAIL_AGGREGATE,		/* found a matching aggregate function */
+	FUNCDETAIL_WINDOWFUNC,		/* found a matching window function */
+	FUNCDETAIL_COERCION			/* it's a type coercion request */
+} FuncDetailCode;
+
+
+extern Node *ParseFuncOrColumn(ParseState *pstate, List *funcname, List *fargs,
+							   Node *last_srf, FuncCall *fn, bool proc_call,
+							   int location);
+
+extern FuncDetailCode func_get_detail(List *funcname,
+									  List *fargs, List *fargnames,
+									  int nargs, Oid *argtypes,
+									  bool expand_variadic, bool expand_defaults,
+									  bool include_out_arguments,
+									  Oid *funcid, Oid *rettype,
+									  bool *retset, int *nvargs, Oid *vatype,
+									  Oid **true_typeids, List **argdefaults);
+
+extern int	func_match_argtypes(int nargs,
+								Oid *input_typeids,
+								FuncCandidateList raw_candidates,
+								FuncCandidateList *candidates);
+
+extern FuncCandidateList func_select_candidate(int nargs,
+											   Oid *input_typeids,
+											   FuncCandidateList candidates);
+
+extern void make_fn_arguments(ParseState *pstate,
+							  List *fargs,
+							  Oid *actual_arg_types,
+							  Oid *declared_arg_types);
+
+extern const char *funcname_signature_string(const char *funcname, int nargs,
+											 List *argnames, const Oid *argtypes);
+extern const char *func_signature_string(List *funcname, int nargs,
+										 List *argnames, const Oid *argtypes);
+
+extern Oid	LookupFuncName(List *funcname, int nargs, const Oid *argtypes,
+						   bool missing_ok);
+extern Oid	LookupFuncWithArgs(ObjectType objtype, ObjectWithArgs *func,
+							   bool missing_ok);
+
+extern void check_srf_call_placement(ParseState *pstate, Node *last_srf,
+									 int location);
+
+#endif							/* PARSE_FUNC_H */