mirror of
https://github.com/postgres/postgres.git
synced 2025-06-30 21:42:05 +03:00
Remove all time travel stuff. Small parser cleanup.
This commit is contained in:
Bruce Momjian
@ -7,7 +7,7 @@
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*
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*
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* IDENTIFICATION
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* $Header: /cvsroot/pgsql/src/backend/parser/analyze.c,v 1.48 1997/10/30 16:34:22 thomas Exp $
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* $Header: /cvsroot/pgsql/src/backend/parser/analyze.c,v 1.49 1997/11/20 23:22:11 momjian Exp $
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*
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*-------------------------------------------------------------------------
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*/
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@ -21,6 +21,7 @@
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#include "nodes/parsenodes.h"
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#include "nodes/relation.h"
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#include "parse.h" /* for AND, OR, etc. */
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#include "catalog/pg_aggregate.h"
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#include "catalog/pg_type.h" /* for INT4OID, etc. */
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#include "catalog/pg_proc.h"
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#include "utils/elog.h"
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@ -66,33 +67,31 @@ static List *expandAllTables(ParseState *pstate);
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static char *figureColname(Node *expr, Node *resval);
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static List *makeTargetNames(ParseState *pstate, List *cols);
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static List *transformTargetList(ParseState *pstate, List *targetlist);
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static TargetEntry *
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make_targetlist_expr(ParseState *pstate,
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static TargetEntry *make_targetlist_expr(ParseState *pstate,
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char *colname, Node *expr,
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List *arrayRef);
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static bool inWhereClause = false;
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static Node *transformWhereClause(ParseState *pstate, Node *a_expr);
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static List *
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transformGroupClause(ParseState *pstate, List *grouplist,
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static List *transformGroupClause(ParseState *pstate, List *grouplist,
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List *targetlist);
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static List *
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transformSortClause(ParseState *pstate,
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static List *transformSortClause(ParseState *pstate,
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List *orderlist, List *targetlist,
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char *uniqueFlag);
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static void parseFromClause(ParseState *pstate, List *frmList);
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static Node *
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ParseFunc(ParseState *pstate, char *funcname,
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static Node *ParseFunc(ParseState *pstate, char *funcname,
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List *fargs, int *curr_resno);
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static List *setup_tlist(char *attname, Oid relid);
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static List *setup_base_tlist(Oid typeid);
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static void
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make_arguments(int nargs, List *fargs, Oid *input_typeids,
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static void make_arguments(int nargs, List *fargs, Oid *input_typeids,
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Oid *function_typeids);
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static void AddAggToParseState(ParseState *pstate, Aggreg *aggreg);
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static void finalizeAggregates(ParseState *pstate, Query *qry);
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static void parseCheckAggregates(ParseState *pstate, Query *qry);
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static ParseState *makeParseState(void);
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static Node *parser_typecast(Value *expr, TypeName *typename, int typlen);
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static Node *parser_typecast2(Node *expr, Oid exprType, Type tp, int typlen);
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static Aggreg *ParseAgg(char *aggname, Oid basetype, Node *target);
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/*****************************************************************************
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*
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@ -464,9 +463,9 @@ transformRuleStmt(ParseState *pstate, RuleStmt *stmt)
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* equal to 2.
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*/
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addRangeTableEntry(pstate, stmt->object->relname, "*CURRENT*",
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FALSE, FALSE, NULL);
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FALSE, FALSE);
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addRangeTableEntry(pstate, stmt->object->relname, "*NEW*",
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FALSE, FALSE, NULL);
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FALSE, FALSE);
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pstate->p_last_resno = 1;
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pstate->p_is_rule = true; /* for expand all */
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@ -947,8 +946,7 @@ parseFromClause(ParseState *pstate, List *frmList)
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* eg. select * from foo f where f.x = 1; will generate wrong answer
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* if we expand * to foo.x.
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*/
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rte = addRangeTableEntry(pstate, relname, refname, baserel->inh, TRUE,
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baserel->timeRange);
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rte = addRangeTableEntry(pstate, relname, refname, baserel->inh, TRUE);
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}
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}
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@ -968,7 +966,7 @@ makeRangeTable(ParseState *pstate, char *relname, List *frmList)
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return;
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if (refnameRangeTablePosn(pstate->p_rtable, relname) < 1)
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rte = addRangeTableEntry(pstate, relname, relname, FALSE, FALSE, NULL);
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rte = addRangeTableEntry(pstate, relname, relname, FALSE, FALSE);
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else
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rte = refnameRangeTableEntry(pstate->p_rtable, relname);
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@ -2321,7 +2319,7 @@ ParseFunc(ParseState *pstate, char *funcname, List *fargs, int *curr_resno)
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rte = refnameRangeTableEntry(pstate->p_rtable, refname);
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if (rte == NULL)
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rte = addRangeTableEntry(pstate, refname, refname, FALSE, FALSE, NULL);
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rte = addRangeTableEntry(pstate, refname, refname, FALSE, FALSE);
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relname = rte->relname;
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relid = rte->relid;
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@ -2443,7 +2441,7 @@ ParseFunc(ParseState *pstate, char *funcname, List *fargs, int *curr_resno)
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rte = refnameRangeTableEntry(pstate->p_rtable, refname);
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if (rte == NULL)
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rte = addRangeTableEntry(pstate, refname, refname,
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FALSE, FALSE, NULL);
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FALSE, FALSE);
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relname = rte->relname;
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vnum = refnameRangeTablePosn(pstate->p_rtable, rte->refname);
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@ -2862,3 +2860,340 @@ parseCheckAggregates(ParseState *pstate, Query *qry)
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*/
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return;
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}
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/* not used
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#define PSIZE(PTR) (*((int32 *)(PTR) - 1))
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*/
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static Node *
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parser_typecast(Value *expr, TypeName *typename, int typlen)
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{
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/* check for passing non-ints */
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Const *adt;
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Datum lcp;
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Type tp;
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char type_string[NAMEDATALEN];
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int32 len;
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char *cp = NULL;
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char *const_string = NULL;
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bool string_palloced = false;
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switch (nodeTag(expr))
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{
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case T_String:
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const_string = DatumGetPointer(expr->val.str);
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break;
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case T_Integer:
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const_string = (char *) palloc(256);
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string_palloced = true;
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sprintf(const_string, "%ld", expr->val.ival);
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break;
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default:
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elog(WARN,
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"parser_typecast: cannot cast this expression to type \"%s\"",
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typename->name);
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}
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if (typename->arrayBounds != NIL)
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{
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sprintf(type_string, "_%s", typename->name);
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tp = (Type) type(type_string);
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}
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else
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{
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tp = (Type) type(typename->name);
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}
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len = tlen(tp);
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#if 0 /* fix me */
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switch (CInteger(lfirst(expr)))
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{
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case INT4OID: /* int4 */
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const_string = (char *) palloc(256);
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string_palloced = true;
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sprintf(const_string, "%d", ((Const *) lnext(expr))->constvalue);
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break;
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case NAMEOID: /* char16 */
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const_string = (char *) palloc(256);
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string_palloced = true;
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sprintf(const_string, "%s", ((Const *) lnext(expr))->constvalue);
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break;
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case CHAROID: /* char */
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const_string = (char *) palloc(256);
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string_palloced = true;
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sprintf(const_string, "%c", ((Const) lnext(expr))->constvalue);
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break;
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case FLOAT8OID: /* float8 */
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const_string = (char *) palloc(256);
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string_palloced = true;
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sprintf(const_string, "%f", ((Const) lnext(expr))->constvalue);
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break;
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case CASHOID: /* money */
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const_string = (char *) palloc(256);
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string_palloced = true;
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sprintf(const_string, "%d",
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(int) ((Const *) expr)->constvalue);
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break;
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case TEXTOID: /* text */
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const_string = DatumGetPointer(((Const) lnext(expr))->constvalue);
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const_string = (char *) textout((struct varlena *) const_string);
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break;
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case UNKNOWNOID: /* unknown */
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const_string = DatumGetPointer(((Const) lnext(expr))->constvalue);
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const_string = (char *) textout((struct varlena *) const_string);
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break;
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default:
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elog(WARN, "unknown type %d", CInteger(lfirst(expr)));
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}
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#endif
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cp = instr2(tp, const_string, typlen);
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if (!tbyvalue(tp))
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{
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/*
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if (len >= 0 && len != PSIZE(cp)) {
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char *pp;
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pp = (char *) palloc(len);
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memmove(pp, cp, len);
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cp = pp;
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}
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*/
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lcp = PointerGetDatum(cp);
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}
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else
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{
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switch (len)
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{
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case 1:
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lcp = Int8GetDatum(cp);
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break;
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case 2:
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lcp = Int16GetDatum(cp);
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break;
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case 4:
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lcp = Int32GetDatum(cp);
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break;
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default:
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lcp = PointerGetDatum(cp);
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break;
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}
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}
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adt = makeConst(typeid(tp),
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len,
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(Datum) lcp,
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false,
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tbyvalue(tp),
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false, /* not a set */
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true /* is cast */ );
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if (string_palloced)
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pfree(const_string);
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return (Node *) adt;
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}
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static Node *
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parser_typecast2(Node *expr, Oid exprType, Type tp, int typlen)
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{
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/* check for passing non-ints */
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Const *adt;
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Datum lcp;
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int32 len = tlen(tp);
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char *cp = NULL;
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char *const_string = NULL;
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bool string_palloced = false;
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Assert(IsA(expr, Const));
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switch (exprType)
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{
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case 0: /* NULL */
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break;
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case INT4OID: /* int4 */
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const_string = (char *) palloc(256);
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string_palloced = true;
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sprintf(const_string, "%d",
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(int) ((Const *) expr)->constvalue);
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break;
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case NAMEOID: /* char16 */
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const_string = (char *) palloc(256);
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string_palloced = true;
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sprintf(const_string, "%s",
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(char *) ((Const *) expr)->constvalue);
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break;
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case CHAROID: /* char */
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const_string = (char *) palloc(256);
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string_palloced = true;
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sprintf(const_string, "%c",
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(char) ((Const *) expr)->constvalue);
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break;
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case FLOAT4OID: /* float4 */
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{
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float32 floatVal =
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DatumGetFloat32(((Const *) expr)->constvalue);
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const_string = (char *) palloc(256);
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string_palloced = true;
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sprintf(const_string, "%f", *floatVal);
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break;
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}
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case FLOAT8OID: /* float8 */
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{
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float64 floatVal =
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DatumGetFloat64(((Const *) expr)->constvalue);
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const_string = (char *) palloc(256);
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string_palloced = true;
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sprintf(const_string, "%f", *floatVal);
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break;
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}
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case CASHOID: /* money */
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const_string = (char *) palloc(256);
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string_palloced = true;
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sprintf(const_string, "%ld",
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(long) ((Const *) expr)->constvalue);
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break;
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case TEXTOID: /* text */
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const_string =
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DatumGetPointer(((Const *) expr)->constvalue);
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const_string = (char *) textout((struct varlena *) const_string);
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break;
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case UNKNOWNOID: /* unknown */
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const_string =
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DatumGetPointer(((Const *) expr)->constvalue);
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const_string = (char *) textout((struct varlena *) const_string);
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break;
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default:
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elog(WARN, "unknown type %u ", exprType);
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}
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if (!exprType)
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{
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adt = makeConst(typeid(tp),
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(Size) 0,
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(Datum) NULL,
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true, /* isnull */
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false, /* was omitted */
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false, /* not a set */
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true /* is cast */ );
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return ((Node *) adt);
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}
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cp = instr2(tp, const_string, typlen);
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if (!tbyvalue(tp))
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{
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/*
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if (len >= 0 && len != PSIZE(cp)) {
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char *pp;
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pp = (char *) palloc(len);
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memmove(pp, cp, len);
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cp = pp;
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}
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*/
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lcp = PointerGetDatum(cp);
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}
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else
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{
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switch (len)
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{
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case 1:
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lcp = Int8GetDatum(cp);
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break;
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case 2:
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lcp = Int16GetDatum(cp);
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break;
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case 4:
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lcp = Int32GetDatum(cp);
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break;
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default:
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lcp = PointerGetDatum(cp);
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break;
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}
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}
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adt = makeConst(typeid(tp),
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(Size) len,
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(Datum) lcp,
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false,
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false, /* was omitted */
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false, /* not a set */
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true /* is cast */ );
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/*
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* printf("adt %s : %u %d %d\n",CString(expr),typeid(tp) , len,cp);
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*/
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if (string_palloced)
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pfree(const_string);
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return ((Node *) adt);
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}
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static Aggreg *
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ParseAgg(char *aggname, Oid basetype, Node *target)
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{
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Oid fintype;
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Oid vartype;
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Oid xfn1;
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Form_pg_aggregate aggform;
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Aggreg *aggreg;
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HeapTuple theAggTuple;
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theAggTuple = SearchSysCacheTuple(AGGNAME, PointerGetDatum(aggname),
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ObjectIdGetDatum(basetype),
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0, 0);
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if (!HeapTupleIsValid(theAggTuple))
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{
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elog(WARN, "aggregate %s does not exist", aggname);
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}
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aggform = (Form_pg_aggregate) GETSTRUCT(theAggTuple);
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fintype = aggform->aggfinaltype;
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xfn1 = aggform->aggtransfn1;
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if (nodeTag(target) != T_Var && nodeTag(target) != T_Expr)
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elog(WARN, "parser: aggregate can only be applied on an attribute or expression");
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/* only aggregates with transfn1 need a base type */
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if (OidIsValid(xfn1))
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{
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basetype = aggform->aggbasetype;
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if (nodeTag(target) == T_Var)
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vartype = ((Var *) target)->vartype;
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else
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vartype = ((Expr *) target)->typeOid;
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if (basetype != vartype)
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{
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Type tp1,
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tp2;
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tp1 = get_id_type(basetype);
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tp2 = get_id_type(vartype);
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elog(NOTICE, "Aggregate type mismatch:");
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elog(WARN, "%s works on %s, not %s", aggname,
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tname(tp1), tname(tp2));
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}
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}
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aggreg = makeNode(Aggreg);
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aggreg->aggname = pstrdup(aggname);
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aggreg->basetype = aggform->aggbasetype;
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aggreg->aggtype = fintype;
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aggreg->target = target;
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return aggreg;
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}
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