public static void ParseOperand(Esymbol symbol,ref string expression,ref int pos,ref int begin,ref int end)
{
if (GetOprandType(symbol) == OprandType.Left)
{
if (CommonTool.GetSymbol(expression[pos + 1]) == Esymbol.LeftBracket)
{
//replace directly
expression = expression.Remove(pos, 1);
expression = expression.Insert(pos, _DicoperandFunc[symbol]);
pos--;
}
else
{
expression = expression.Remove(pos, 1);
expression = expression.Insert(pos, _DicoperandFunc[symbol]+"(");
int pos2 = pos;
pos2 = pos2 + _DicoperandFunc[symbol].Length + "(".Length;
for (;pos2<expression.Length && !CommonTool.IsCaculateSymbol(expression[pos2]); pos2++)
{
}
expression = expression.Insert(pos2, ")");
pos--;
}
}
else
{
//右操作！
}
}
////数字节点只能是叶子。
//public GeneralNode(double number_p)
//{
// number = number_p;
// left = right = null;
// isNumber = true;
// symbol = Esymbol.Nothing;
// priority = Epriority.Nothing;
//}
//操作符节点初始化
public void SetUpNode(params object[] paras)//Esymbol symbol_p, INode left_p, INode right_p)
{
if (paras != null && paras.Length == 4)
{
if (paras[0] != null)
{
number = (double)paras[0];
isNumber = true;
}
else
{
isNumber = false;
}
left = (INode)paras[1];
right = (INode)paras[2];
if (paras[3] != null)
{
symbol = (Esymbol)paras[3];
}
else
{
symbol = Esymbol.Nothing;
}
priority = this.SymbolInPriority(symbol);
}
else
throw new Exception("Node初始化参数数量对！");
}
public static void ParseOperand(Esymbol symbol, ref string expression, ref int pos, ref int begin, ref int end)
{
if (GetOprandType(symbol) == OprandType.Left)
{
if (CommonTool.GetSymbol(expression[pos + 1]) == Esymbol.LeftBracket)
{
//replace directly
expression = expression.Remove(pos, 1);
expression = expression.Insert(pos, _DicoperandFunc[symbol]);
pos--;
}
else
{
expression = expression.Remove(pos, 1);
expression = expression.Insert(pos, _DicoperandFunc[symbol] + "(");
int pos2 = pos;
pos2 = pos2 + _DicoperandFunc[symbol].Length + "(".Length;
for (; pos2 < expression.Length && !CommonTool.IsCaculateSymbol(expression[pos2]); pos2++)
{
}
expression = expression.Insert(pos2, ")");
pos--;
}
}
else
{
//右操作！
}
}
public static OprandType GetOprandType(Esymbol symbol)
{
if (isOperand(symbol))
{
if (symbol == Esymbol.Fan || symbol==Esymbol.JieChen) return OprandType.Left;
else return OprandType.Right;
}
return OprandType.Nothing;
}
public static bool IsCaculateSymbol(char c)
{
Esymbol s = GetSymbol(c);
if (s == Esymbol.Division || s == Esymbol.Muliply || s == Esymbol.Plus || s == Esymbol.Subtraction || s == Esymbol.Power)
{
return(true);
}
return(false);
}
public static OprandType GetOprandType(Esymbol symbol)
{
if (isOperand(symbol))
{
if (symbol == Esymbol.Fan || symbol == Esymbol.JieChen)
{
return(OprandType.Left);
}
else
{
return(OprandType.Right);
}
}
return(OprandType.Nothing);
}
public static bool isOperand(Esymbol symbol)
{
return _DicoperandFunc.ContainsKey(symbol);
}
public static bool isOperand(Esymbol symbol)
{
return(_DicoperandFunc.ContainsKey(symbol));
}
