Niels Lohmann baf0bee38f Binary readers: append strings straight from contiguous input ...

get_bytes() read every string into a zero-filled resize() and copied the
bytes over it, so each byte was written twice. A string that the input holds
in one block (bulk_remaining() at least its length) is now appended from it
directly. The claimed length is checked against the input first, so a huge
claimed length still allocates nothing it cannot fill; other inputs and
binary values keep the chunked loop.

from_cbor() and from_msgpack() of twitter.json and citm_catalog.json get
5.5-9.1% faster on an Apple M1 Max and 2.7-8.6% on x86-64 (GCC 15, Clang 21);
canada.json, which has few strings, is unchanged.

Signed-off-by: Niels Lohmann <mail@nlohmann.me>

2026-11-06 06:43:54 +01:00

..

json_fwd.hpp

json_view: one SIMD macro set with the library (#5921)

2026-10-26 20:13:31 +01:00

json_literals.hpp

Move the user-defined string literals to <nlohmann/json_literals.hpp> and add JSON_NO_AUTOMATIC_UDLS (#5610)

2026-09-30 20:08:17 +02:00

json_view.hpp

Fix the MSVC and GCC builds of develop (C4127, -Weffc++) (#6016)

2026-11-02 20:07:00 +01:00

json.hpp

Binary readers: append strings straight from contiguous input

2026-11-06 06:43:54 +01:00