private static object InternalCount(MutableString/*!*/ self, MutableString[]/*!*/ ranges) {
BitArray map = new RangeParser(ranges).Parse();
int count = 0;
for (int i = 0; i < self.Length; i++) {
if (map.Get(self.GetChar(i)))
count++;
}
return ScriptingRuntimeHelpers.Int32ToObject(count);
}
private static MutableString/*!*/ InternalDelete(MutableString/*!*/ self, MutableString[]/*!*/ ranges) {
BitArray map = new RangeParser(ranges).Parse();
MutableString result = self.CreateInstance().TaintBy(self);
for (int i = 0; i < self.Length; i++) {
if (!map.Get(self.GetChar(i))) {
result.Append(self.GetChar(i));
}
}
return result;
}