public static double loadAndCalculate(string data, ref int from, char to = END_LINE)
{
if (from >= data.Length || data[from] == to)
{
throw new ArgumentException("Loaded invalid data: " + data);
}
List <Cell> listToMerge = new List <Cell>(16);
StringBuilder item = new StringBuilder();
do
{ // Main processing cycle of the first part.
char ch = data[from++];
if (stillCollecting(item.ToString(), ch, to))
{ // The char still belongs to the previous operand.
item.Append(ch);
if (from < data.Length && data[from] != to)
{
continue;
}
}
// We are done getting the next token. The getValue() call below may
// recursively call loadAndCalculate(). This will happen if extracted
// item is a function or if the next item is starting with a START_ARG '('.
ParserFunction func = new ParserFunction(data, ref from, item.ToString(), ch);
double value = func.getValue(data, ref from);
char action = validAction(ch) ? ch
: updateAction(data, ref from, ch, to);
listToMerge.Add(new Cell(value, action));
item.Clear();
} while (from < data.Length && data[from] != to);
if (from < data.Length &&
(data[from] == END_ARG || data[from] == to))
{ // This happens when called recursively: move one char forward.
from++;
}
Cell baseCell = listToMerge[0];
int index = 1;
return(merge(baseCell, ref index, listToMerge));
}
