Find the end of a reference token and reject an escape in one loop over the
characters instead of two library calls (find_first_of, memchr), and parse an
array index straight from the pointer instead of copying the token first. An
index that is not a plain number of up to 18 digits (9 for a 32-bit
size_type) is left to json_pointer, which reports it as before.
patch() on the diff of every eighth scalar (instructions on macOS, Linux Ir GCC 13 /
Clang 18): canada 67.7M -> 63.7M, 42.6M -> 38.4M / 43.6M -> 40.0M; citm_catalog
27.1M -> 26.8M, 18.1M -> 17.7M / 18.0M -> 17.7M; twitter unchanged.
Signed-off-by: Niels Lohmann <mail@nlohmann.me>
Niels Lohmann
38ba507196