73 lines
2.9 KiB
C
73 lines
2.9 KiB
C
/* -------------------------------------------------------------------------
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*
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* nodeFuncs.h
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* Various general-purpose manipulations of Node trees
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*
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* Portions Copyright (c) 1996-2012, PostgreSQL Global Development Group
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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* src/include/nodes/nodeFuncs.h
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*
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* -------------------------------------------------------------------------
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*/
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#ifndef NODEFUNCS_H
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#define NODEFUNCS_H
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#ifndef FRONTEND_PARSER
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#include "nodes/parsenodes.h"
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#include "nodes/plannodes.h"
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#else
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#include "datatypes.h"
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#include "nodes/primnodes.h"
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#include "nodes/value.h"
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#include "catalog/pg_attribute.h"
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#include "access/tupdesc.h"
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#include "nodes/parsenodes_common.h"
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#endif
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/* flags bits for query_tree_walker and query_tree_mutator */
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#define QTW_IGNORE_RT_SUBQUERIES 0x01 /* subqueries in rtable */
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#define QTW_IGNORE_CTE_SUBQUERIES 0x02 /* subqueries in cteList */
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#define QTW_IGNORE_RC_SUBQUERIES 0x03 /* both of above */
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#define QTW_IGNORE_JOINALIASES 0x04 /* JOIN alias var lists */
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#define QTW_IGNORE_RANGE_TABLE 0x08 /* skip rangetable entirely */
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#define QTW_EXAMINE_RTES 0x10 /* examine RTEs */
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#define QTW_DONT_COPY_QUERY 0x20 /* do not copy top Query */
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#define QTW_IGNORE_DUMMY 0x40 /* remote dummy */
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extern Oid exprType(const Node* expr);
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extern int32 exprTypmod(const Node* expr);
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extern bool exprIsLengthCoercion(const Node* expr, int32* coercedTypmod);
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extern Node* relabel_to_typmod(Node* expr, int32 typmod);
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extern bool expression_returns_set(Node* clause);
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extern Oid exprCollation(const Node* expr);
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extern Oid exprInputCollation(const Node* expr);
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extern void exprSetCollation(Node* expr, Oid collation);
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extern void exprSetInputCollation(Node* expr, Oid inputcollation);
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extern int exprLocation(const Node* expr);
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extern bool expression_tree_walker(Node* node, bool (*walker)(), void* context);
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extern Node* expression_tree_mutator(Node* node, Node* (*mutator)(Node*, void*), void* context, bool isCopy = true);
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#ifndef FRONTEND_PARSER
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extern bool query_tree_walker(Query* query, bool (*walker)(), void* context, int flags);
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extern Query* query_tree_mutator(Query* query, Node* (*mutator)(Node*, void*), void* context, int flags);
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#endif
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extern bool range_table_walker(List* rtable, bool (*walker)(), void* context, int flags);
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extern List* range_table_mutator(List* rtable, Node* (*mutator)(Node*, void*), void* context, int flags);
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extern bool query_or_expression_tree_walker(Node* node, bool (*walker)(), void* context, int flags);
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extern Node* query_or_expression_tree_mutator(Node* node, Node* (*mutator)(Node*, void*), void* context, int flags);
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extern bool raw_expression_tree_walker(Node* node, bool (*walker)(), void* context);
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extern bool is_func_distinct_unshippable(Oid funcid);
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extern bool lockNextvalWalker(Node* node, void* context);
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extern void find_nextval_seqoid_walker(Node* node, Oid* seqoid);
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#endif /* NODEFUNCS_H */
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