public LikeExpression(IParseTreeValue lhs, IParseTreeValue rhs)
     : base(lhs, rhs, Tokens.Like, false)
 {
     _hashCode = OpSymbol.GetHashCode();
 }
 public IsClauseExpression(IParseTreeValue value, string opSymbol)
     : base(value, null, opSymbol)
 {
     _hashCode = OpSymbol.GetHashCode();
 }
 public BinaryExpression(IParseTreeValue lhs, IParseTreeValue rhs, string opSymbol)
     : base(lhs, rhs, opSymbol, true)
 {
     _hashCode = OpSymbol.GetHashCode();
 }