public JSObject exec(JSObject arg)
{
if (this.GetType() != typeof(RegExp))
throw new JSException(new TypeError("Try to call RegExp.exec on not RegExp object."));
string input = (arg ?? "undefined").ToString();
lIndex = Tools.JSObjectToNumber(lastIndex);
if ((lIndex.attributes & JSObjectAttributesInternal.SystemObject) != 0)
lIndex = lIndex.CloneImpl();
if (lIndex.valueType == JSObjectType.Double)
{
lIndex.valueType = JSObjectType.Int;
lIndex.iValue = (int)lIndex.dValue;
}
if (lIndex.iValue < 0)
lIndex.iValue = 0;
if (lIndex.iValue >= input.Length && input.Length > 0)
{
lIndex.iValue = 0;
return Null;
}
var m = regEx.Match(input, lIndex.iValue);
if (!m.Success)
{
lIndex.iValue = 0;
return Null;
}
var res = new Array(m.Groups.Count);
for (int i = 0; i < m.Groups.Count; i++)
res.data[i] = m.Groups[i].Success ? (JSObject)m.Groups[i].Value : null;
if (_global)
lIndex.iValue = m.Index + m.Length;
res.DefineMember("index").Assign(m.Index);
res.DefineMember("input").Assign(input);
return res;
}