public MathExpr[] GetMathExprs(string atom)
{
var priority0 = "+;-;";
var priority1 = "*;/;%;";
var priority2 = "*^";
var priority0ar = priority0.Split(new char[] { ';' }, StringSplitOptions.None);
var priority1ar = priority1.Split(new char[] { ';' }, StringSplitOptions.None);
var priority2ar = priority2.Split(new char[] { ';' }, StringSplitOptions.None);
var op = (priority0 + priority1 + priority2).Split(new char[] { ';' }, StringSplitOptions.None);
var digits = "0123456789";
var open = atom.Count(c => c == '(');
var close = atom.Count(c => c == ')');
if (open == close)
{
var priority = 0;
MathExpr expr = null;
var all = new List<MathExpr>();
for (int i = 0; i < atom.Length; i++)
{
var c = atom[i];
if (expr == null)
{
expr = new MathExpr();
}
if (c == '(')
{
//expr.Left += c;
priority++;
}
else if (c == ')')
{
//expr.Left += c;
priority--;
}
else if (op.Any(a => a == c.ToString()))
{
if (string.IsNullOrEmpty(expr.Left))
{
if (c == '-' || c == '+')
{
expr.Left += c;
}
else
{
throw new MpException(MpException.GetMessage(ErrorCodes.TP_Выражения1),
ErrorCodes.TP_Выражения1);
}
}
else if (!string.IsNullOrEmpty(expr.Left) && expr.Operator == null)
{
expr.Operator = c.ToString();
expr.Priority = priority;
if (priority0ar.Any(a => a == c.ToString()))
expr.OperatorPriority = 0;
else if (priority1ar.Any(a => a == c.ToString()))
expr.OperatorPriority = 1;
else
{
var c1 = c;
if (priority2ar.Any(a => a == c1.ToString()))
expr.OperatorPriority = 2;
else
{
throw new MpException(MpException.GetMessage(ErrorCodes.TP_Выражения2),
ErrorCodes.TP_Выражения2);
}
}
all.Add(expr);
expr = null;
}
}
else
{
if (digits.Contains(c))
{
expr.Left += c;
}
else
{
//поиск переменной или функции
expr.Left += c;
}
}
if (i == atom.Length - 1)
{
all.Add(expr);
expr = null;
}
}
return all.ToArray();
}
else
{
throw new MpException(MpException.GetMessage(ErrorCodes.TP_Выражения3),
ErrorCodes.TP_Выражения3);
}
throw new NotImplementedException();
}
public string GetPolskaFormat(string atom, out MathExpr[] exprs)
{
exprs = GetMathExprs(atom);
return exprs.OrderByDescending(o => o.Priority).ThenBy(o => o.OperatorPriority).Aggregate("", (current, expr) => current + expr.Polska()+" ");
}
