LString LString::fromUtf8(const std::string &s) {
if (s.size() == 0) return LString();
const uint8_t *begin = reinterpret_cast<const uint8_t*>(s.c_str());
const uint8_t *end = begin + s.size();
LString ret;
ret.reserve(s.size());
LChar *destBegin = ret.begin();
LChar *destEnd = ret.end();
bool conversionSucceeded = utf8ToUtf32(&begin, end, &destBegin, destEnd);
assert(conversionSucceeded && "Failed conversion utf8 -> utf32");
ret.resize(destBegin - ret.begin());
return ret;
}
