1997-11-25 23:07:18 +01:00
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/*-------------------------------------------------------------------------
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*
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* parse_node.h
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*
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*
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2001-01-24 20:43:33 +01:00
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* Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group
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2000-01-26 06:58:53 +01:00
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* Portions Copyright (c) 1994, Regents of the University of California
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1997-11-25 23:07:18 +01:00
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*
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2002-04-17 01:08:12 +02:00
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* $Id: parse_node.h,v 1.30 2002/04/16 23:08:12 tgl Exp $
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1997-11-25 23:07:18 +01:00
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef PARSE_NODE_H
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#define PARSE_NODE_H
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1999-07-16 01:04:24 +02:00
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#include "nodes/parsenodes.h"
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#include "utils/rel.h"
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1997-11-25 23:07:18 +01:00
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2000-09-12 23:07:18 +02:00
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/*
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* State information used during parse analysis
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2001-02-14 22:35:07 +01:00
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*
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* p_rtable: list of RTEs that will become the rangetable of the query.
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* Note that neither relname nor refname of these entries are necessarily
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* unique; searching the rtable by name is a bad idea.
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*
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* p_joinlist: list of join items (RangeTblRef and JoinExpr nodes) that
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* will become the fromlist of the query's top-level FromExpr node.
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*
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* p_namespace: list of join items that represents the current namespace
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* for table and column lookup. This may be just a subset of the rtable +
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* joinlist, and/or may contain entries that are not yet added to the main
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* joinlist. Note that an RTE that is present in p_namespace, but does not
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* have its inFromCl flag set, is accessible only with an explicit qualifier;
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* lookups of unqualified column names should ignore it.
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2000-02-15 04:38:29 +01:00
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*/
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1997-11-25 23:07:18 +01:00
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typedef struct ParseState
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{
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2001-03-22 05:01:46 +01:00
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struct ParseState *parentParseState; /* stack link */
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2000-09-12 23:07:18 +02:00
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List *p_rtable; /* range table so far */
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2001-03-22 05:01:46 +01:00
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List *p_joinlist; /* join items so far (will become FromExpr
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* node's fromlist) */
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2001-02-14 22:35:07 +01:00
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List *p_namespace; /* current lookup namespace (join items) */
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2000-09-12 23:07:18 +02:00
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int p_last_resno; /* last targetlist resno assigned */
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2000-11-08 23:10:03 +01:00
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List *p_forUpdate; /* FOR UPDATE clause, if any (see gram.y) */
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1998-01-15 20:00:16 +01:00
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bool p_hasAggs;
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1998-01-17 05:53:46 +01:00
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bool p_hasSubLinks;
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1998-01-15 20:00:16 +01:00
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bool p_is_insert;
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1997-11-25 23:07:18 +01:00
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bool p_is_update;
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Relation p_target_relation;
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RangeTblEntry *p_target_rangetblentry;
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} ParseState;
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1998-01-19 06:06:41 +01:00
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extern ParseState *make_parsestate(ParseState *parentParseState);
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2002-04-17 01:08:12 +02:00
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extern Expr *make_op(List *opname, Node *ltree, Node *rtree);
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extern Node *make_operand(Node *tree, Oid orig_typeId, Oid target_typeId);
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2000-09-12 23:07:18 +02:00
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extern Var *make_var(ParseState *pstate, RangeTblEntry *rte, int attrno);
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1999-07-19 02:26:20 +02:00
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extern ArrayRef *transformArraySubscripts(ParseState *pstate,
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2000-04-12 19:17:23 +02:00
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Node *arrayBase,
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2001-02-14 22:35:07 +01:00
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Oid arrayType,
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2000-04-12 19:17:23 +02:00
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List *indirection,
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bool forceSlice,
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Node *assignFrom);
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1997-11-26 02:14:33 +01:00
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extern Const *make_const(Value *value);
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2001-10-28 07:26:15 +01:00
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2001-11-05 18:46:40 +01:00
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#endif /* PARSE_NODE_H */
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