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Ye-old pgindent run. Same 4-space tabs.
This commit is contained in:
Bruce Momjian
@ -9,7 +9,7 @@
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*
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*
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* IDENTIFICATION
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* $Header: /cvsroot/pgsql/src/backend/optimizer/plan/setrefs.c,v 1.61 2000/04/04 01:21:47 tgl Exp $
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* $Header: /cvsroot/pgsql/src/backend/optimizer/plan/setrefs.c,v 1.62 2000/04/12 17:15:22 momjian Exp $
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*
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*-------------------------------------------------------------------------
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*/
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@ -24,13 +24,15 @@
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#include "optimizer/tlist.h"
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#include "optimizer/var.h"
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typedef struct {
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typedef struct
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{
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List *outer_tlist;
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List *inner_tlist;
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Index acceptable_rel;
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} join_references_context;
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typedef struct {
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typedef struct
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{
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Index subvarno;
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List *subplanTargetList;
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} replace_vars_with_subplan_refs_context;
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@ -38,12 +40,12 @@ typedef struct {
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static void set_join_references(Join *join);
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static void set_uppernode_references(Plan *plan, Index subvarno);
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static Node *join_references_mutator(Node *node,
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join_references_context *context);
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join_references_context *context);
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static Node *replace_vars_with_subplan_refs(Node *node,
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Index subvarno,
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List *subplanTargetList);
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Index subvarno,
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List *subplanTargetList);
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static Node *replace_vars_with_subplan_refs_mutator(Node *node,
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replace_vars_with_subplan_refs_context *context);
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replace_vars_with_subplan_refs_context *context);
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static bool fix_opids_walker(Node *node, void *context);
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/*****************************************************************************
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@ -56,7 +58,7 @@ static bool fix_opids_walker(Node *node, void *context);
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* set_plan_references
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* This is the final processing pass of the planner/optimizer. The plan
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* tree is complete; we just have to adjust some representational details
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* for the convenience of the executor. We update Vars in upper plan nodes
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* for the convenience of the executor. We update Vars in upper plan nodes
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* to refer to the outputs of their subplans, and we compute regproc OIDs
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* for operators (ie, we look up the function that implements each op).
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* We must also build lists of all the subplan nodes present in each
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@ -74,7 +76,8 @@ set_plan_references(Plan *plan)
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if (plan == NULL)
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return;
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/* We must rebuild the plan's list of subplan nodes, since we are
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/*
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* We must rebuild the plan's list of subplan nodes, since we are
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* copying/mutating its expression trees.
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*/
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plan->subPlan = NIL;
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@ -92,10 +95,10 @@ set_plan_references(Plan *plan)
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fix_opids((Node *) ((IndexScan *) plan)->indxqualorig);
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plan->subPlan =
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nconc(plan->subPlan,
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pull_subplans((Node *) ((IndexScan *) plan)->indxqual));
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pull_subplans((Node *) ((IndexScan *) plan)->indxqual));
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plan->subPlan =
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nconc(plan->subPlan,
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pull_subplans((Node *) ((IndexScan *) plan)->indxqualorig));
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pull_subplans((Node *) ((IndexScan *) plan)->indxqualorig));
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break;
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case T_NestLoop:
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set_join_references((Join *) plan);
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@ -105,24 +108,26 @@ set_plan_references(Plan *plan)
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fix_opids((Node *) ((MergeJoin *) plan)->mergeclauses);
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plan->subPlan =
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nconc(plan->subPlan,
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pull_subplans((Node *) ((MergeJoin *) plan)->mergeclauses));
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pull_subplans((Node *) ((MergeJoin *) plan)->mergeclauses));
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break;
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case T_HashJoin:
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set_join_references((Join *) plan);
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fix_opids((Node *) ((HashJoin *) plan)->hashclauses);
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plan->subPlan =
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nconc(plan->subPlan,
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pull_subplans((Node *) ((HashJoin *) plan)->hashclauses));
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pull_subplans((Node *) ((HashJoin *) plan)->hashclauses));
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break;
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case T_Material:
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case T_Sort:
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case T_Unique:
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case T_Hash:
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/* These plan types don't actually bother to evaluate their
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/*
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* These plan types don't actually bother to evaluate their
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* targetlists or quals (because they just return their
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* unmodified input tuples). The optimizer is lazy about
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* creating really valid targetlists for them. Best to
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* just leave the targetlist alone.
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* creating really valid targetlists for them. Best to just
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* leave the targetlist alone.
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*/
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break;
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case T_Agg:
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@ -130,7 +135,9 @@ set_plan_references(Plan *plan)
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set_uppernode_references(plan, (Index) 0);
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break;
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case T_Result:
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/* Result may or may not have a subplan; no need to fix up
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/*
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* Result may or may not have a subplan; no need to fix up
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* subplan references if it hasn't got one...
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*
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* XXX why does Result use a different subvarno from Agg/Group?
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@ -144,9 +151,7 @@ set_plan_references(Plan *plan)
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break;
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case T_Append:
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foreach(pl, ((Append *) plan)->appendplans)
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{
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set_plan_references((Plan *) lfirst(pl));
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}
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break;
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case T_TidScan:
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/* nothing special */
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@ -158,8 +163,8 @@ set_plan_references(Plan *plan)
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}
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/*
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* For all plan types, fix operators in targetlist and qual expressions,
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* and find subplans therein.
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* For all plan types, fix operators in targetlist and qual
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* expressions, and find subplans therein.
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*/
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fix_opids((Node *) plan->targetlist);
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fix_opids((Node *) plan->qual);
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@ -176,20 +181,21 @@ set_plan_references(Plan *plan)
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* NOTE: it is essential that we recurse into subplans AFTER we set
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* subplan references in this plan's tlist and quals. If we did the
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* reference-adjustments bottom-up, then we would fail to match this
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* plan's var nodes against the already-modified nodes of the subplans.
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* plan's var nodes against the already-modified nodes of the
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* subplans.
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*/
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set_plan_references(plan->lefttree);
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set_plan_references(plan->righttree);
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foreach(pl, plan->initPlan)
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{
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SubPlan *sp = (SubPlan *) lfirst(pl);
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SubPlan *sp = (SubPlan *) lfirst(pl);
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Assert(IsA(sp, SubPlan));
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set_plan_references(sp->plan);
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}
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foreach(pl, plan->subPlan)
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{
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SubPlan *sp = (SubPlan *) lfirst(pl);
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SubPlan *sp = (SubPlan *) lfirst(pl);
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Assert(IsA(sp, SubPlan));
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set_plan_references(sp->plan);
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@ -325,9 +331,10 @@ join_references_mutator(Node *node,
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newvar->varattno = resdom->resno;
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return (Node *) newvar;
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}
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/*
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* Var not in either tlist --- either raise an error,
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* or return the Var unmodified.
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* Var not in either tlist --- either raise an error, or return
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* the Var unmodified.
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*/
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if (var->varno != context->acceptable_rel)
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elog(ERROR, "join_references: variable not in subplan target lists");
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@ -370,7 +377,7 @@ replace_vars_with_subplan_refs(Node *node,
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static Node *
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replace_vars_with_subplan_refs_mutator(Node *node,
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replace_vars_with_subplan_refs_context *context)
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replace_vars_with_subplan_refs_context *context)
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{
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if (node == NULL)
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return NULL;
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@ -414,7 +421,7 @@ fix_opids(Node *node)
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}
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static bool
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fix_opids_walker (Node *node, void *context)
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fix_opids_walker(Node *node, void *context)
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{
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if (node == NULL)
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return false;
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