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package edg.constraint;
import java.util.List;
import edg.graph.Edge;
import edg.slicing.Phase;
public class AsteriskConstraint extends EdgeConstraint
{
private static AsteriskConstraint constraint = new AsteriskConstraint();
public static AsteriskConstraint getConstraint()
{
return AsteriskConstraint.constraint;
}
private AsteriskConstraint()
{
}
public boolean equals(Object object)
{
return object instanceof AsteriskConstraint;
}
public String toString()
{
return "*";
}
protected List<Constraints> resolve(Phase phase, Edge edge, Constraints constraints, int productionDepth)
{
return super.wrap(constraints);
}
protected List<Constraints> resolve(Phase phase, Edge edge, Constraints constraints, AccessConstraint topConstraint, int productionDepth)
{
if (phase.isInstanceof(Phase.Slicing))
return super.wrap(new Constraints());
super.check(phase, Phase.SummaryGeneration);
if (topConstraint.operation == AccessConstraint.Operation.Remove)
return super.wrap(super.push(phase, constraints));
super.check(topConstraint.operation, AccessConstraint.Operation.Add);
final Constraints newConstraints = super.pop(constraints);
if (newConstraints.isEdgeConstraintsEmpty())
return super.wrap(newConstraints);
final EdgeConstraint peekConstraint = newConstraints.peekEdgeConstraint();
return super.resolve(phase, edge, newConstraints, peekConstraint, productionDepth);
}
protected List<Constraints> resolve(Phase phase, Edge edge, Constraints constraints, GrammarConstraint topConstraint, int productionDepth)
{
super.check(phase, Phase.SummaryGeneration);
return super.wrap(super.push(phase, constraints));
}
protected List<Constraints> resolve(Phase phase, Edge edge, Constraints constraints, SeekingConstraint topConstraint, int productionDepth)
{
if (phase.isInstanceof(Phase.Slicing))
return super.wrap(new Constraints());
super.check(phase, Phase.SummaryGeneration);
if (topConstraint.operation == SeekingConstraint.Operation.LetThrough || topConstraint.operation == SeekingConstraint.Operation.Remove)
return super.wrap(super.push(phase, constraints));
super.check(topConstraint.operation, SeekingConstraint.Operation.Add);
final Constraints newConstraints = super.pop(constraints);
if (newConstraints.isEdgeConstraintsEmpty())
return super.wrap(newConstraints);
final EdgeConstraint peekConstraint = newConstraints.peekEdgeConstraint();
return super.resolve(phase, edge, newConstraints, peekConstraint, productionDepth);
}
protected List<Constraints> resolve(Phase phase, Edge edge, Constraints constraints, AsteriskConstraint topConstraint, int productionDepth)
{
super.check(phase, Phase.SummaryGeneration);
return super.wrap(constraints);
}
}