/// <summary>
/// 取得運算結果。body可能會有數字(int)、右括號(bool)、單元運算列(List(char))
/// </summary>
/// <param name="userIdForAns">用戶ID</param>
/// <returns>運算結果</returns>
public IHttpActionResult PostAnswer(int userIdForAns)
{
//讀取body
EqualExpression equalexpression = Request.Content.ReadAsAsync <EqualExpression>().Result;
ExpressionController expController = Users.GetExpressionController(userIdForAns);
List <UnaryOperator> unaryList = (equalexpression.UnaryList == null) ?
new List <UnaryOperator>()
: equalexpression.UnaryList.Select(x => Operators.GetUnary(x)).ToList();
decimal?number = equalexpression.Number;
decimal ans = 0;
try
{
switch (equalexpression.Type())
{
case EqualType.NUM_EQUAL:
expController.Add(number.Value, unaryList);
ans = expController.GetResult();
break;
case EqualType.NUM_RB_EQUAL:
expController.Add(number.Value, unaryList);
expController.RightBracket();
ans = expController.GetResult();
break;
default:
throw new Exception("EqualType錯誤");
}
}
catch (Exception)
{
expController.Clear();
return(Ok("fail"));
}
return(Ok(ans));
}
public void Clear()
{
Number = null;
expController.Clear();
}