There are several other functions which might eventually end up here and ideally become unified across json/ and text/ and io/ so this is just a first step to create the new subdir and get rid of upb/internal/
PiperOrigin-RevId: 488954926
upb_String is a hack which exists because the original C++ tokenizer got to
assume the existence of C++ strings, so at least for now the C tokenizer needs
a rough equivalent. But this should be a purely internal implementation detail,
not part of the visible surface.
PiperOrigin-RevId: 469814074
- Disallow multiline strings.
- Disallow a letter immediately following a number without intervening whitespace.
- Replace distinct bool option flags with a single options int.
PiperOrigin-RevId: 467829817