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Viewing changes to src/include/nodes/nodeFuncs.h

  • Committer: Bazaar Package Importer
  • Author(s): Martin Pitt
  • Date: 2009-03-20 12:00:13 UTC
  • Revision ID: james.westby@ubuntu.com-20090320120013-hogj7egc5mjncc5g
Tags: upstream-8.4~0cvs20090328
Import upstream version 8.4~0cvs20090328

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src/include/nodes/nodeFuncs.h
 
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/*-------------------------------------------------------------------------
 
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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) 1996-2009, 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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 * $PostgreSQL$
 
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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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#include "nodes/parsenodes.h"
 
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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_EXAMINE_RTES                        0x08            /* examine RTEs */
 
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#define QTW_DONT_COPY_QUERY                     0x10            /* do not copy top Query */
 
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extern Oid      exprType(Node *expr);
 
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extern int32 exprTypmod(Node *expr);
 
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extern bool exprIsLengthCoercion(Node *expr, int32 *coercedTypmod);
 
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extern bool expression_returns_set(Node *clause);
 
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extern int      exprLocation(Node *expr);
 
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extern bool expression_tree_walker(Node *node, bool (*walker) (),
 
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                                                                                           void *context);
 
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extern Node *expression_tree_mutator(Node *node, Node *(*mutator) (),
 
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                                                                                                 void *context);
 
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extern bool query_tree_walker(Query *query, bool (*walker) (),
 
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                                                                                  void *context, int flags);
 
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extern Query *query_tree_mutator(Query *query, Node *(*mutator) (),
 
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                                                                                         void *context, int flags);
 
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extern bool range_table_walker(List *rtable, bool (*walker) (),
 
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                                                                                   void *context, int flags);
 
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extern List *range_table_mutator(List *rtable, Node *(*mutator) (),
 
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                                                                                         void *context, int flags);
 
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extern bool query_or_expression_tree_walker(Node *node, bool (*walker) (),
 
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                                                                                                   void *context, int flags);
 
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extern Node *query_or_expression_tree_mutator(Node *node, Node *(*mutator) (),
 
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                                                                                                   void *context, int flags);
 
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extern bool raw_expression_tree_walker(Node *node, bool (*walker) (),
 
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                                                                           void *context);
 
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#endif   /* NODEFUNCS_H */