dan/oxc
1
0
Fork 0
mirror of https://github.com/danbulant/oxc synced 2026-05-19 12:19:15 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

perf(parser): faster decoding unicode escapes in identifiers (#4579)

Browse source 
Replace `next_char` and `peek_char` with `peek_byte` when decoding unicode escape sequences in identifiers.
This commit is contained in:
overlookmotel 2024-07-31 03:33:08 +00:00
parent ae1d38f60d
commit 55a8763d6e
1 changed files with 6 additions and 3 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

9
crates/oxc_parser/src/lexer/unicode.rs
View file

@ -54,14 +54,17 @@ impl<'a> Lexer<'a> {
check_identifier_start: bool,
) {
let start = self.offset();
if self.next_char() != Some('u') {
if self.peek_byte() == Some(b'u') {
self.consume_char();
} else {
self.next_char();
let range = Span::new(start, self.offset());
self.error(diagnostics::unicode_escape_sequence(range));
return;
}
let value = match self.peek_char() {
Some('{') => self.unicode_code_point(),
let value = match self.peek_byte() {
Some(b'{') => self.unicode_code_point(),
_ => self.surrogate_pair(),
};