/// <summary>
/// 要素登録
/// </summary>
/// <param name="pItem">要素</param>
/// <remarks>
/// CalculatorItemBaseクラスおよび派生クラスを登録します。
/// 登録する順番は数式に準じます。
/// </remarks>
public void Entry(CalculatorItemBase pItem)
{
if (pItem is CalculatorValueBase)
{
this.mStackValue.Push((CalculatorValue)pItem);
return;
}
CalculatorOperatorBase opeThis = (CalculatorOperatorBase)pItem;
// (
if (opeThis.OperatorType == CalculatorOperatorBase.EnumOperatorType.Open)
{
this.mStackOperator.Push(opeThis);
return;
}
// )
if (opeThis.OperatorType == CalculatorOperatorBase.EnumOperatorType.Close)
{
while (true)
{
CalculatorOperatorBase ope = this.mStackOperator.Pop();
ope.Calculation(this.mStackValue);
if (ope.OperatorType == CalculatorOperatorBase.EnumOperatorType.Open)
{
break;
}
}
return;
}
if (mStackOperator.Count == 0)
{
this.mStackOperator.Push(opeThis);
return;
}
CalculatorOperatorBase opeBefore = mStackOperator.Peek();
int priority = opeBefore.ComparePriority(opeThis);
if (priority < 0)
{
this.mStackOperator.Push(opeThis);
return;
}
opeBefore.Calculation(this.mStackValue);
mStackOperator.Pop();
this.mStackOperator.Push(opeThis);
}
/// <summary>
/// 優先順位比較
/// </summary>
/// <param name="pTarget">比較対象</param>
/// <returns>負=this＜pTarget、0=this==pTarget、正=this＞pTarget</returns>
public int ComparePriority(CalculatorItemBase pTarget)
{
if (this.Priority < pTarget.Priority)
{
return(-1);
}
else if (this.Priority > pTarget.Priority)
{
return(1);
}
else
{
return(0);
}
}
/// <summary>
/// 要素推測・生成
/// </summary>
/// <param name="pObject">推測元オブジェクト</param>
/// <returns>object</returns>
/// <seealso cref="Calculators.OperatorKeyWord"/>
/// <remarks>
/// pObjectから推測した要素を作成しこれを返します。
/// 推測可能なオブジェクト(文字列)は OperatorKeyWord を参照のこと。
/// OperatorKeyWord に無く、かつIConvertibleを継承するオブジェクトは数値と見なされます。
/// (ex)
/// Make("(");
/// </remarks>
static public object Make(object pObject)
{
object obj = CalculatorItemBase.Make(InstanceTable, pObject);
if (obj != null)
{
return(obj);
}
if (pObject is IConvertible)
{
return(new CalculatorValue(((IConvertible)pObject).ToDouble(CultureInfo.CurrentCulture.NumberFormat)));
}
return(null);
}
/// <summary>
/// 要素登録(自動解釈型)
/// </summary>
/// <param name="pObject">要素</param>
/// <remarks>
/// 様々な型の要素を判別し、登録します。
/// 詳しくはCalculatorItemBase.Make()メソッドを参照。
/// (ex)
/// Entry(1);
/// Entry("+");
/// Entry(2);
/// </remarks>
/// <seealso cref="CalculatorItemBase.Make"/>
public void Entry(object pObject)
{
object obj;
string str = pObject.ToString();
if ((str.Length > 0) && (str[0] == '@'))
{
obj = this.GetItemEventHandler(str);
}
else
{
obj = CalculatorItemBase.Make(pObject);
}
if (obj == null)
{
throw new ArgumentNullException();
}
this.Entry((CalculatorItemBase)obj);
}
