public ExpressionOperation(ExpressionOperationKind kind)
{
if (kind == ExpressionOperationKind.Number)
throw new InvalidOperationException(
"Number has to be specified only for ExpressionOperationKind.Number or Identifier");
Kind = kind;
Number = 0;
}
public ExpressionOperation(ExpressionOperationKind kind, int number)
{
if (kind != ExpressionOperationKind.Number)
throw new InvalidOperationException(
"Number can be specified only for ExpressionOperationKind.Number");
Kind = kind;
Number = number;
}