21   StringRef Current = Code;  in emit()  local
23   while (!Current.empty()) {  in emit()
24     size_t Pos = Current.find_first_of("$\n\\");  in emit()
26       OS << Current;  in emit()
27       Current = "";  in emit()
31     OS << Current.substr(0, Pos);  in emit()
32     Current = Current.substr(Pos);  in emit()
34     if (Current.startswith("\n")) {  in emit()
36       Current = Current.drop_front(1);  in emit()
40     if (Current.startswith("\\$") || Current.startswith("\\\\")) {  in emit()
41       OS << Current[1];  in emit()
42       Current = Current.drop_front(2);  in emit()
46     if (Current.startswith("\\")) {  in emit()
47       Current = Current.drop_front(1);  in emit()
51     if (Current.startswith("${")) {  in emit()
52       StringRef StartVar = Current;  in emit()
53       Current = Current.drop_front(2);  in emit()
55       std::tie(Var, Current) = Current.split("}");  in emit()
81     Current = Current.drop_front(1);  in emit()