private bool GetInsideFunction(ITextSnapshot snapshot, int pos, out string className, out string funcName, out int argIndex)
{
var lineNum = snapshot.GetLineNumberFromPosition(pos);
var sb = new StringBuilder(snapshot.GetLineTextUpToPosition(pos));
var rxFuncCall = new Regex(@"(?:;|{|}|(?:(\w+)\s*\.\s*)?(\w+)\s*(\())"); // groups: 1 = class name, 2 = function name, 3 = start bracket
while (true)
{
var parser = new CodeParser(sb.ToString());
foreach (var match in rxFuncCall.Matches(parser.Source).Cast <Match>().Reverse())
{
if (match.Groups[0].Length == 1)
{
// Found a character that proves we're not inside a function.
className = null;
funcName = null;
argIndex = 0;
return(false);
}
else
{
parser.Position = match.Groups[3].Index; // position of start bracket
var startPos = parser.Position;
if (parser.ReadNestable() && parser.Type != CodeType.Nested)
{
className = match.Groups[1].Value;
funcName = match.Groups[2].Value;
// Count the number of commas between that position and the end.
parser.Position = startPos;
var commaCount = 0;
while (parser.Read())
{
if (parser.Text == ",")
{
commaCount++;
}
}
argIndex = commaCount;
return(true);
}
}
}
lineNum--;
if (lineNum < 0)
{
break;
}
var line = snapshot.GetLineFromLineNumber(lineNum);
sb.Insert(0, line.GetText() + "\r\n");
}
className = null;
funcName = null;
argIndex = 0;
return(false);
}
