private Stack <double> GetConvertStack(Stack <string> operands)
{
Stack <double> result = new Stack <double>();
while (!operands.IsEmpty())
{
if (!(operands.Top() == "pi" || operands.Top() == "e"))
{
result.Push(double.Parse(operands.Top()));
}
else
{
if (operands.Top() == "pi")
{
result.Push(Math.PI);
}
else
{
result.Push(Math.E);
}
}
operands.Pop();
}
return(result.ReverseStack());
}
public string GetReverseNotation(string line, out Stack <Actions> actions, out Stack <string> operands)
{
string result = "";
actions = new Stack <Actions>();
operands = new Stack <string>();
Stack <Actions> functions = new Stack <Actions>();
for (int i = 0; i < line.Length; i++)
{
if (IsSplite(line[i]))
{
continue;
}
if (IsDigit(line[i]) && (i == 0 || line[i - 1] != '.'))
{
AddDigits(ref result, line, ref i, operands);
continue;
}
if (line[i] == '(')
{
functions.Push(new Actions("(", false, -1));
continue;
}
if (line[i] == ')')
{
AddFunctionsAndOperations(functions, ref result, actions);
continue;
}
if (IsBinaryOperation(line, i))
{
AddOperationToStack(functions, line, i, ref result, actions);
continue;
}
if (IsConstant(line, ref i, ref result, operands))
{
continue;
}
AddFunctionToStack(functions, line, ref i);
}
while (!functions.IsEmpty())
{
if (!IsFunction(functions.Top().Name) && (functions.Top().Name.Length == 0 ||
functions.Top().Name[0] != '+' && functions.Top().Name[0] != '-' &&
functions.Top().Name[0] != '*' && functions.Top().Name[0] != '/' &&
functions.Top().Name[0] != '^'))
{
throw new Exception("Строка не корректно задана");
}
result += functions.Top().Name;
actions.Push(functions.Top());
result += ' ';
functions.Pop();
}
actions = actions.ReverseStack();
operands = operands.ReverseStack();
return(result);
}