json/include/nlohmann/detail/input at 2ddcf344e683d60964f621fb2774bafd066100a8 - json

amorfo77/json

0 Fork 0

mirror of https://github.com/nlohmann/json.git synced 2026-11-06 20:49:21 +00:00

Files

T

Niels Lohmann 2ddcf344e6 Vector scans: one compare for the quote and the control characters

The SSE2/NEON tests for the bytes a string run stops at compared with the
quote, with the backslash and with 0x20 separately. Flipping bit 1 maps
0x00-0x1F onto itself and the quote onto 0x20, and every other ASCII byte
to 33 or more, so (c ^ 2) < 33 finds the quote and the control characters
with one compare: signed where the bytes from 0x80 stop the run too,
unsigned (or with a saturating subtraction / minimum on SSE2) where they
do not. This saves one vector operation per 16 bytes in all twelve vector
tests: the lexer's vector_plain_run() and vector_utf8_run(), dump()'s
copy_plain_halves() and copy_plain_vectors(), and json_view's scanner and
serializer. The DEL tests of the ensure_ascii paths stay.

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

2026-11-06 18:33:28 +01:00

binary_reader.hpp

Binary reader and writer: remove checks that invariants make dead (#6001 )

2026-11-04 23:42:17 +01:00

contiguous_parser.hpp

accept(): skip digits without computing their value

2026-11-06 12:16:38 +01:00

input_adapters.hpp

Lexer, parser, stream adapter, SAX: remove checks that invariants make dead (#6004 )

2026-11-02 17:54:39 +01:00

json_sax.hpp

Fix leak and crash when an allocation throws during parsing (#6023 )