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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 */ #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 *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 */