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Diffstat (limited to 'src/backend/optimizer/util/clauses.c')
-rw-r--r--src/backend/optimizer/util/clauses.c78
1 files changed, 39 insertions, 39 deletions
diff --git a/src/backend/optimizer/util/clauses.c b/src/backend/optimizer/util/clauses.c
index 4dabbf50dac..0727bfb6f2c 100644
--- a/src/backend/optimizer/util/clauses.c
+++ b/src/backend/optimizer/util/clauses.c
@@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/optimizer/util/clauses.c,v 1.170 2004/05/10 22:44:45 tgl Exp $
+ * $PostgreSQL: pgsql/src/backend/optimizer/util/clauses.c,v 1.171 2004/05/26 04:41:27 neilc Exp $
*
* HISTORY
* AUTHOR DATE MAJOR EVENT
@@ -114,7 +114,7 @@ get_leftop(Expr *clause)
OpExpr *expr = (OpExpr *) clause;
if (expr->args != NIL)
- return lfirst(expr->args);
+ return linitial(expr->args);
else
return NULL;
}
@@ -130,8 +130,8 @@ get_rightop(Expr *clause)
{
OpExpr *expr = (OpExpr *) clause;
- if (expr->args != NIL && lnext(expr->args) != NIL)
- return lfirst(lnext(expr->args));
+ if (list_length(expr->args) >= 2)
+ return lsecond(expr->args);
else
return NULL;
}
@@ -176,7 +176,7 @@ make_notclause(Expr *notclause)
Expr *
get_notclausearg(Expr *notclause)
{
- return lfirst(((BoolExpr *) notclause)->args);
+ return linitial(((BoolExpr *) notclause)->args);
}
/*****************************************************************************
@@ -278,8 +278,8 @@ make_ands_explicit(List *andclauses)
{
if (andclauses == NIL)
return (Expr *) makeBoolConst(true, false);
- else if (lnext(andclauses) == NIL)
- return (Expr *) lfirst(andclauses);
+ else if (length(andclauses) == 1)
+ return (Expr *) linitial(andclauses);
else
return make_andclause(andclauses);
}
@@ -595,7 +595,7 @@ contain_mutable_functions_walker(Node *node, void *context)
if (IsA(node, SubLink))
{
SubLink *sublink = (SubLink *) node;
- List *opid;
+ ListCell *opid;
foreach(opid, sublink->operOids)
{
@@ -678,7 +678,7 @@ contain_volatile_functions_walker(Node *node, void *context)
if (IsA(node, SubLink))
{
SubLink *sublink = (SubLink *) node;
- List *opid;
+ ListCell *opid;
foreach(opid, sublink->operOids)
{
@@ -848,7 +848,7 @@ pull_constant_clauses(List *quals, List **constantQual)
{
FastList constqual,
restqual;
- List *q;
+ ListCell *q;
FastListInit(&constqual);
FastListInit(&restqual);
@@ -882,7 +882,7 @@ pull_constant_clauses(List *quals, List **constantQual)
bool
has_distinct_on_clause(Query *query)
{
- List *targetList;
+ ListCell *l;
/* Is there a DISTINCT clause at all? */
if (query->distinctClause == NIL)
@@ -901,9 +901,9 @@ has_distinct_on_clause(Query *query)
* This code assumes that the DISTINCT list is valid, ie, all its entries
* match some entry of the tlist.
*/
- foreach(targetList, query->targetList)
+ foreach(l, query->targetList)
{
- TargetEntry *tle = (TargetEntry *) lfirst(targetList);
+ TargetEntry *tle = (TargetEntry *) lfirst(l);
if (tle->resdom->ressortgroupref == 0)
{
@@ -998,8 +998,8 @@ CommuteClause(OpExpr *clause)
clause->opfuncid = InvalidOid;
/* opresulttype and opretset are assumed not to change */
- temp = lfirst(clause->args);
- lfirst(clause->args) = lsecond(clause->args);
+ temp = linitial(clause->args);
+ linitial(clause->args) = lsecond(clause->args);
lsecond(clause->args) = temp;
}
@@ -1162,7 +1162,7 @@ eval_const_expressions_mutator(Node *node, List *active_fns)
{
DistinctExpr *expr = (DistinctExpr *) node;
List *args;
- List *arg;
+ ListCell *arg;
bool has_null_input = false;
bool all_null_input = true;
bool has_nonconst_input = false;
@@ -1281,8 +1281,8 @@ eval_const_expressions_mutator(Node *node, List *active_fns)
if (newargs == NIL)
return makeBoolConst(false, false);
/* If only one nonconst-or-NULL input, it's the result */
- if (lnext(newargs) == NIL)
- return (Node *) lfirst(newargs);
+ if (length(newargs) == 1)
+ return (Node *) linitial(newargs);
/* Else we still need an OR node */
return (Node *) make_orclause(newargs);
}
@@ -1302,16 +1302,16 @@ eval_const_expressions_mutator(Node *node, List *active_fns)
if (newargs == NIL)
return makeBoolConst(true, false);
/* If only one nonconst-or-NULL input, it's the result */
- if (lnext(newargs) == NIL)
- return (Node *) lfirst(newargs);
+ if (length(newargs) == 1)
+ return (Node *) linitial(newargs);
/* Else we still need an AND node */
return (Node *) make_andclause(newargs);
}
case NOT_EXPR:
Assert(length(args) == 1);
- if (IsA(lfirst(args), Const))
+ if (IsA(linitial(args), Const))
{
- Const *const_input = (Const *) lfirst(args);
+ Const *const_input = (Const *) linitial(args);
/* NOT NULL => NULL */
if (const_input->constisnull)
@@ -1320,13 +1320,13 @@ eval_const_expressions_mutator(Node *node, List *active_fns)
return makeBoolConst(!DatumGetBool(const_input->constvalue),
false);
}
- else if (not_clause((Node *) lfirst(args)))
+ else if (not_clause((Node *) linitial(args)))
{
/* Cancel NOT/NOT */
- return (Node *) get_notclausearg((Expr *) lfirst(args));
+ return (Node *) get_notclausearg((Expr *) linitial(args));
}
/* Else we still need a NOT node */
- return (Node *) make_notclause((Expr *) lfirst(args));
+ return (Node *) make_notclause((Expr *) linitial(args));
default:
elog(ERROR, "unrecognized boolop: %d",
(int) expr->boolop);
@@ -1414,7 +1414,7 @@ eval_const_expressions_mutator(Node *node, List *active_fns)
FastList newargs;
Node *defresult;
Const *const_input;
- List *arg;
+ ListCell *arg;
/* Simplify the test expression, if any */
newarg = eval_const_expressions_mutator((Node *) caseexpr->arg,
@@ -1480,7 +1480,7 @@ eval_const_expressions_mutator(Node *node, List *active_fns)
ArrayExpr *newarray;
bool all_const = true;
FastList newelems;
- List *element;
+ ListCell *element;
FastListInit(&newelems);
foreach(element, arrayexpr->elements)
@@ -1511,7 +1511,7 @@ eval_const_expressions_mutator(Node *node, List *active_fns)
CoalesceExpr *coalesceexpr = (CoalesceExpr *) node;
CoalesceExpr *newcoalesce;
FastList newargs;
- List *arg;
+ ListCell *arg;
FastListInit(&newargs);
foreach(arg, coalesceexpr->args)
@@ -1614,7 +1614,7 @@ static List *
simplify_or_arguments(List *args, bool *haveNull, bool *forceTrue)
{
List *newargs = NIL;
- List *larg;
+ ListCell *larg;
foreach(larg, args)
{
@@ -1675,7 +1675,7 @@ static List *
simplify_and_arguments(List *args, bool *haveNull, bool *forceFalse)
{
List *newargs = NIL;
- List *larg;
+ ListCell *larg;
foreach(larg, args)
{
@@ -1774,7 +1774,7 @@ evaluate_function(Oid funcid, Oid result_type, List *args,
Form_pg_proc funcform = (Form_pg_proc) GETSTRUCT(func_tuple);
bool has_nonconst_input = false;
bool has_null_input = false;
- List *arg;
+ ListCell *arg;
FuncExpr *newexpr;
/*
@@ -1870,7 +1870,7 @@ inline_function(Oid funcid, Oid result_type, List *args,
Query *querytree;
Node *newexpr;
int *usecounts;
- List *arg;
+ ListCell *arg;
int i;
/*
@@ -1946,13 +1946,13 @@ inline_function(Oid funcid, Oid result_type, List *args,
if (length(raw_parsetree_list) != 1)
goto fail;
- querytree_list = parse_analyze(lfirst(raw_parsetree_list),
+ querytree_list = parse_analyze(linitial(raw_parsetree_list),
argtypes, funcform->pronargs);
if (length(querytree_list) != 1)
goto fail;
- querytree = (Query *) lfirst(querytree_list);
+ querytree = (Query *) linitial(querytree_list);
/*
* The single command must be a simple "SELECT expression".
@@ -1976,7 +1976,7 @@ inline_function(Oid funcid, Oid result_type, List *args,
length(querytree->targetList) != 1)
goto fail;
- newexpr = (Node *) ((TargetEntry *) lfirst(querytree->targetList))->expr;
+ newexpr = (Node *) ((TargetEntry *) linitial(querytree->targetList))->expr;
/*
* If the function has any arguments declared as polymorphic types,
@@ -2330,7 +2330,7 @@ expression_tree_walker(Node *node,
bool (*walker) (),
void *context)
{
- List *temp;
+ ListCell *temp;
/*
* The walker has already visited the current node, and so we need
@@ -2576,7 +2576,7 @@ query_tree_walker(Query *query,
void *context,
int flags)
{
- List *rt;
+ ListCell *rt;
Assert(query != NULL && IsA(query, Query));
@@ -2972,7 +2972,7 @@ expression_tree_mutator(Node *node,
* elements!
*/
FastList resultlist;
- List *temp;
+ ListCell *temp;
FastListInit(&resultlist);
foreach(temp, (List *) node)
@@ -3064,7 +3064,7 @@ query_tree_mutator(Query *query,
int flags)
{
FastList newrt;
- List *rt;
+ ListCell *rt;
Assert(query != NULL && IsA(query, Query));
generated by cgit v1.2.3 (git 2.25.1) at 2025-05-21 12:42:20 +0000