namespace NUnit.Framework.Constraints { public abstract class BinaryOperator : ConstraintOperator { public override int LeftPrecedence { get { if (!(base.RightContext is CollectionOperator) && !(base.RightContext is ExactCountOperator)) return base.LeftPrecedence; return base.LeftPrecedence + 10; } } public override int RightPrecedence { get { if (!(base.RightContext is CollectionOperator)) return base.RightPrecedence; return base.RightPrecedence + 10; } } public override void Reduce(ConstraintBuilder.ConstraintStack stack) { IConstraint right = stack.Pop(); IConstraint left = stack.Pop(); stack.Push(ApplyOperator(left, right)); } public abstract IConstraint ApplyOperator(IConstraint left, IConstraint right); } }