private CalcOperation.EOperation MixOperaions(CalcOperation.EOperation newOperaion, CalcOperation.EOperation prevOperaion)
{
if (prevOperaion == CalcOperation.EOperation.None)
{
return(newOperaion);
}
else
{
if (prevOperaion == newOperaion)
{
switch (newOperaion)
{
case CalcOperation.EOperation.Divide:
break;
case CalcOperation.EOperation.Minus:
break;
case CalcOperation.EOperation.Multiply:
break;
case CalcOperation.EOperation.Plus:
break;
}
}
}
return(CalcOperation.EOperation.None);
}
private Operations ParseOperation(string text, ref int index)
{
var operations = new List <CalcOperation>();
CalcOperation.EOperation currentOperaion = CalcOperation.EOperation.Plus;
for (int i = index; i < text.Length; i++)
{
var symbol = text[i];
switch (symbol)
{
case BlockVarriants.OpenScope:
i++;
var operation = ParseOperation(text, ref i);
operations.Add(new CalcOperation(currentOperaion, operation));
break;
case BlockVarriants.CloseScope:
index = i;
return(new Operations(operations));
case BlockVarriants.Divide:
currentOperaion = CalcOperation.EOperation.Divide;
break;
case BlockVarriants.Multiply:
currentOperaion = CalcOperation.EOperation.Multiply;
break;
case BlockVarriants.Minus:
currentOperaion = CalcOperation.EOperation.Minus;
break;
case BlockVarriants.Plus:
currentOperaion = CalcOperation.EOperation.Plus;
break;
case ' ':
case '\t':
break;
default:
if (currentOperaion == CalcOperation.EOperation.None)
{
throw new Exception("Parse error, can't find type of operation at " + i.ToString());
}
if (char.IsDigit(symbol))
{
var constant = ParseConstant(text, ref i);
operations.Add(new CalcOperation(currentOperaion, constant));
}
else if (char.IsLetter(symbol))
{
var varriable = ParseVarriable(text, ref i);
operations.Add(new CalcOperation(currentOperaion, varriable));
}
else
{
var newCalc = ParseOperation(text, ref i);
operations.Add(new CalcOperation(currentOperaion, newCalc));
}
currentOperaion = CalcOperation.EOperation.None;
break;
}
}
if (!operations.Any())
{
throw new Exception($"Parse error, can't find any operands from {index} to {text.Length - 1}");
}
index = text.Length;
return(new Operations(operations));
}
