bundles/org.simantics.scl.compiler/src/org/simantics/scl/compiler/elaboration/chr/planning/items/CheckPrePlanItem.java

   1 package org.simantics.scl.compiler.elaboration.chr.planning.items;
   2
   3 import org.simantics.scl.compiler.elaboration.chr.plan.CheckOp;
   4 import org.simantics.scl.compiler.elaboration.chr.planning.PrePlanItem;
   5 import org.simantics.scl.compiler.elaboration.chr.planning.QueryPlanningContext;
   6 import org.simantics.scl.compiler.elaboration.expressions.Expression;
   7
   8 import gnu.trove.set.hash.TIntHashSet;
   9
  10 public class CheckPrePlanItem extends PrePlanItem {
  11     public Expression condition;
  12     public TIntHashSet variableSet;
  13
  14     public CheckPrePlanItem(Expression condition, TIntHashSet variableSet, int secondaryPriority) {
  15         super(secondaryPriority);
  16         this.variableSet = variableSet;
  17         this.condition = condition;
  18         if(variableSet.isEmpty())
  19             primaryPriority = 0.0;
  20     }
  21
  22     @Override
  23     public void initializeListeners(QueryPlanningContext context) {
  24         context.listen(variableSet, this);
  25     }
  26
  27     @Override
  28     public void variableSolved(QueryPlanningContext context, int variableId) {
  29         variableSet.remove(variableId);
  30         if(variableSet.isEmpty()) {
  31             primaryPriority = 0.0;
  32             context.priorityQueue.adjust(this);
  33         }
  34     }
  35
  36     @Override
  37     public void generate(QueryPlanningContext context) {
  38         context.addPlanOp(new CheckOp(location, condition));
  39         context.bind(variableSet);
  40     }
  41 }