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Move copying out of tight loop

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This commit is contained in:
Andrew Noyes
2025-05-19 19:49:11 -04:00
parent a4d7d1f91e
commit a890ce3666
1 changed files with 16 additions and 3 deletions
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19
src/parser3.h
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@@ -327,14 +327,27 @@ inline Status n_string(Parser3 *self) {
} }
inline Status n_string2(Parser3 *self) { inline Status n_string2(Parser3 *self) {
auto commit = [self, before = self->buf]() {
int len = self->buf - before;
if (self->writeBuf != before) {
memmove(self->writeBuf, before, len);
}
self->writeBuf += len;
};
begin: begin:
switch (tables.stringByteMeaning[uint8_t(*self->buf)]) { auto meaning = tables.stringByteMeaning[uint8_t(*self->buf)];
case Tables::NORMAL: if (meaning == Tables::NORMAL) {
*self->writeBuf++ = *self->buf++; ++self->buf;
if (self->buf == self->bufEnd) { if (self->buf == self->bufEnd) {
commit();
MUSTTAIL return Parser3::keepGoing(self); MUSTTAIL return Parser3::keepGoing(self);
} }
goto begin; goto begin;
}
commit();
switch (meaning) {
case Tables::NORMAL:
__builtin_unreachable();
case Tables::DUBQUOTE: case Tables::DUBQUOTE:
self->flushString(); self->flushString();
self->callbacks->on_end_string(self->data); self->callbacks->on_end_string(self->data);