Adding upstream version 14.5.upstream/14.5upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 162 insertions, 0 deletions

diff --git a/src/include/nodes/nodeFuncs.h b/src/include/nodes/nodeFuncs.h
new file mode 100644
index 0000000..03a346c
--- /dev/null
+++ b/src/include/nodes/nodeFuncs.h
@@ -0,0 +1,162 @@
+/*-------------------------------------------------------------------------
+ *
+ * nodeFuncs.h
+ *		Various general-purpose manipulations of Node trees
+ *
+ * Portions Copyright (c) 1996-2021, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * src/include/nodes/nodeFuncs.h
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef NODEFUNCS_H
+#define NODEFUNCS_H
+
+#include "nodes/parsenodes.h"
+
+
+/* flags bits for query_tree_walker and query_tree_mutator */
+#define QTW_IGNORE_RT_SUBQUERIES	0x01	/* subqueries in rtable */
+#define QTW_IGNORE_CTE_SUBQUERIES	0x02	/* subqueries in cteList */
+#define QTW_IGNORE_RC_SUBQUERIES	0x03	/* both of above */
+#define QTW_IGNORE_JOINALIASES		0x04	/* JOIN alias var lists */
+#define QTW_IGNORE_RANGE_TABLE		0x08	/* skip rangetable entirely */
+#define QTW_EXAMINE_RTES_BEFORE		0x10	/* examine RTE nodes before their
+											 * contents */
+#define QTW_EXAMINE_RTES_AFTER		0x20	/* examine RTE nodes after their
+											 * contents */
+#define QTW_DONT_COPY_QUERY			0x40	/* do not copy top Query */
+#define QTW_EXAMINE_SORTGROUP		0x80	/* include SortGroupNode lists */
+
+/* callback function for check_functions_in_node */
+typedef bool (*check_function_callback) (Oid func_id, void *context);
+
+
+extern Oid	exprType(const Node *expr);
+extern int32 exprTypmod(const Node *expr);
+extern bool exprIsLengthCoercion(const Node *expr, int32 *coercedTypmod);
+extern Node *applyRelabelType(Node *arg, Oid rtype, int32 rtypmod, Oid rcollid,
+							  CoercionForm rformat, int rlocation,
+							  bool overwrite_ok);
+extern Node *relabel_to_typmod(Node *expr, int32 typmod);
+extern Node *strip_implicit_coercions(Node *node);
+extern bool expression_returns_set(Node *clause);
+
+extern Oid	exprCollation(const Node *expr);
+extern Oid	exprInputCollation(const Node *expr);
+extern void exprSetCollation(Node *expr, Oid collation);
+extern void exprSetInputCollation(Node *expr, Oid inputcollation);
+
+extern int	exprLocation(const Node *expr);
+
+extern void fix_opfuncids(Node *node);
+extern void set_opfuncid(OpExpr *opexpr);
+extern void set_sa_opfuncid(ScalarArrayOpExpr *opexpr);
+
+/* Is clause a FuncExpr clause? */
+static inline bool
+is_funcclause(const void *clause)
+{
+	return clause != NULL && IsA(clause, FuncExpr);
+}
+
+/* Is clause an OpExpr clause? */
+static inline bool
+is_opclause(const void *clause)
+{
+	return clause != NULL && IsA(clause, OpExpr);
+}
+
+/* Extract left arg of a binary opclause, or only arg of a unary opclause */
+static inline Node *
+get_leftop(const void *clause)
+{
+	const OpExpr *expr = (const OpExpr *) clause;
+
+	if (expr->args != NIL)
+		return (Node *) linitial(expr->args);
+	else
+		return NULL;
+}
+
+/* Extract right arg of a binary opclause (NULL if it's a unary opclause) */
+static inline Node *
+get_rightop(const void *clause)
+{
+	const OpExpr *expr = (const OpExpr *) clause;
+
+	if (list_length(expr->args) >= 2)
+		return (Node *) lsecond(expr->args);
+	else
+		return NULL;
+}
+
+/* Is clause an AND clause? */
+static inline bool
+is_andclause(const void *clause)
+{
+	return (clause != NULL &&
+			IsA(clause, BoolExpr) &&
+			((const BoolExpr *) clause)->boolop == AND_EXPR);
+}
+
+/* Is clause an OR clause? */
+static inline bool
+is_orclause(const void *clause)
+{
+	return (clause != NULL &&
+			IsA(clause, BoolExpr) &&
+			((const BoolExpr *) clause)->boolop == OR_EXPR);
+}
+
+/* Is clause a NOT clause? */
+static inline bool
+is_notclause(const void *clause)
+{
+	return (clause != NULL &&
+			IsA(clause, BoolExpr) &&
+			((const BoolExpr *) clause)->boolop == NOT_EXPR);
+}
+
+/* Extract argument from a clause known to be a NOT clause */
+static inline Expr *
+get_notclausearg(const void *notclause)
+{
+	return (Expr *) linitial(((const BoolExpr *) notclause)->args);
+}
+
+extern bool check_functions_in_node(Node *node, check_function_callback checker,
+									void *context);
+
+extern bool expression_tree_walker(Node *node, bool (*walker) (),
+								   void *context);
+extern Node *expression_tree_mutator(Node *node, Node *(*mutator) (),
+									 void *context);
+
+extern bool query_tree_walker(Query *query, bool (*walker) (),
+							  void *context, int flags);
+extern Query *query_tree_mutator(Query *query, Node *(*mutator) (),
+								 void *context, int flags);
+
+extern bool range_table_walker(List *rtable, bool (*walker) (),
+							   void *context, int flags);
+extern List *range_table_mutator(List *rtable, Node *(*mutator) (),
+								 void *context, int flags);
+
+extern bool range_table_entry_walker(RangeTblEntry *rte, bool (*walker) (),
+									 void *context, int flags);
+
+extern bool query_or_expression_tree_walker(Node *node, bool (*walker) (),
+											void *context, int flags);
+extern Node *query_or_expression_tree_mutator(Node *node, Node *(*mutator) (),
+											  void *context, int flags);
+
+extern bool raw_expression_tree_walker(Node *node, bool (*walker) (),
+									   void *context);
+
+struct PlanState;
+extern bool planstate_tree_walker(struct PlanState *planstate, bool (*walker) (),
+								  void *context);
+
+#endif							/* NODEFUNCS_H */