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- /*-------------------------------------------------------------------------
- *
- * nodeFuncs.h
- * Various general-purpose manipulations of Node trees
- *
- * Portions Copyright (c) 1996-2016, 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 0x10 /* examine RTEs */
- #define QTW_DONT_COPY_QUERY 0x20 /* do not copy top Query */
- /* 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 *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);
- 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 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 */
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