1 files changed, 97 insertions, 0 deletions
diff --git a/src/include/parser/parse_func.h b/src/include/parser/parse_func.h
new file mode 100644
index 00000000000..de8fc66d848
--- /dev/null
+++ b/src/include/parser/parse_func.h
@@ -0,0 +1,97 @@
+/*-------------------------------------------------------------------------
+ *
+ * catalog_utils.h--
+ *
+ *
+ *
+ * Copyright (c) 1994, Regents of the University of California
+ *
+ * $Id: parse_func.h,v 1.1 1997/11/25 22:06:56 momjian Exp $
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef PARSER_FUNC_H
+#define PARSER_FUNC_H
+
+#include <nodes/nodes.h>
+#include <nodes/pg_list.h>
+#include <nodes/parsenodes.h>
+#include <nodes/primnodes.h>
+#include <parser/parse_func.h>
+#include <parser/parse_node.h>
+
+/*
+ *	This structure is used to explore the inheritance hierarchy above
+ *	nodes in the type tree in order to disambiguate among polymorphic
+ *	functions.
+ */
+typedef struct _InhPaths
+{
+	int			nsupers;		/* number of superclasses */
+	Oid			self;			/* this class */
+	Oid		   *supervec;		/* vector of superclasses */
+} InhPaths;
+
+/*
+ *	This structure holds a list of possible functions or operators that
+ *	agree with the known name and argument types of the function/operator.
+ */
+typedef struct _CandidateList
+{
+	Oid		   *args;
+	struct _CandidateList *next;
+}		   *CandidateList;
+
+Node *ParseFunc(ParseState *pstate, char *funcname, List *fargs,
+	int *curr_resno);
+
+Oid funcid_get_rettype(Oid funcid);
+
+CandidateList func_get_candidates(char *funcname, int nargs);
+
+bool can_coerce(int nargs, Oid *input_typeids, Oid *func_typeids);
+
+int match_argtypes(int nargs,
+				   Oid *input_typeids,
+				   CandidateList function_typeids,
+				   CandidateList *candidates);
+
+Oid * func_select_candidate(int nargs,
+						  Oid *input_typeids,
+						  CandidateList candidates);
+
+bool func_get_detail(char *funcname,
+					int nargs,
+					Oid *oid_array,
+					Oid *funcid,	/* return value */
+					Oid *rettype,	/* return value */
+					bool *retset,	/* return value */
+					Oid **true_typeids);
+
+Oid ** argtype_inherit(int nargs, Oid *oid_array);
+
+int findsupers(Oid relid, Oid **supervec);
+
+Oid **genxprod(InhPaths *arginh, int nargs);
+
+void make_arguments(int nargs,
+				   List *fargs,
+				   Oid *input_typeids,
+				   Oid *function_typeids);
+
+List *setup_tlist(char *attname, Oid relid);
+
+List *setup_base_tlist(Oid typeid);
+
+Node *ParseComplexProjection(ParseState *pstate,
+						   char *funcname,
+						   Node *first_arg,
+						   bool *attisset);
+	
+void func_error(char *caller, char *funcname, int nargs, Oid *argtypes);
+
+				   
+
+
+#endif							/* PARSE_FUNC_H */
+