// SPDX-License-Identifier: Apache-2.0 OR MIT pub(crate) fn skip(mut s: &str) -> &str { 'skip: while !s.is_empty() { let byte = s.as_bytes()[0]; if byte == b'/' { if s.starts_with("//") && (!s.starts_with("///") || s.starts_with("////")) && !s.starts_with("//!") { if let Some(i) = s.find('\n') { s = &s[i + 1..]; continue; } else { return ""; } } else if s.starts_with("/**/") { s = &s[4..]; continue; } else if s.starts_with("/*") && (!s.starts_with("/**") || s.starts_with("/***")) && !s.starts_with("/*!") { let mut depth = 0; let bytes = s.as_bytes(); let mut i = 0; let upper = bytes.len() - 1; while i < upper { if bytes[i] == b'/' && bytes[i + 1] == b'*' { depth += 1; i += 1; // eat '*' } else if bytes[i] == b'*' && bytes[i + 1] == b'/' { depth -= 1; if depth == 0 { s = &s[i + 2..]; continue 'skip; } i += 1; // eat '/' } i += 1; } return s; } } match byte { b' ' | 0x09..=0x0D => { s = &s[1..]; continue; } b if b <= 0x7F => {} _ => { let ch = s.chars().next().unwrap(); if is_whitespace(ch) { s = &s[ch.len_utf8()..]; continue; } } } return s; } s} fn is_whitespace(ch: char) -> bool { // Rust treats left-to-right mark and right-to-left mark as whitespace ch.is_whitespace() || ch == '\u{200e}' || ch == '\u{200f}'}
// SPDX-License-Identifier: Apache-2.0 OR MIT
pub(crate) fn skip(mut s: &str) -> &str {
'skip: while !s.is_empty() {
let byte = s.as_bytes()[0];
if byte == b'/' {
if s.starts_with("//")
&& (!s.starts_with("///") || s.starts_with("////"))
&& !s.starts_with("//!")
{
if let Some(i) = s.find('\n') {
s = &s[i + 1..];
continue;
} else {
return "";
}
} else if s.starts_with("/**/") {
s = &s[4..];
continue;
} else if s.starts_with("/*")
&& (!s.starts_with("/**") || s.starts_with("/***"))
&& !s.starts_with("/*!")
{
let mut depth = 0;
let bytes = s.as_bytes();
let mut i = 0;
let upper = bytes.len() - 1;
while i < upper {
if bytes[i] == b'/' && bytes[i + 1] == b'*' {
depth += 1;
i += 1; // eat '*'
} else if bytes[i] == b'*' && bytes[i + 1] == b'/' {
depth -= 1;
if depth == 0 {
s = &s[i + 2..];
continue 'skip;
}
i += 1; // eat '/'
}
i += 1;
}
return s;
}
}
match byte {
b' ' | 0x09..=0x0D => {
s = &s[1..];
continue;
}
b if b <= 0x7F => {}
_ => {
let ch = s.chars().next().unwrap();
if is_whitespace(ch) {
s = &s[ch.len_utf8()..];
continue;
}
}
}
return s;
}
s
}
fn is_whitespace(ch: char) -> bool {
// Rust treats left-to-right mark and right-to-left mark as whitespace
ch.is_whitespace() || ch == '\u{200e}' || ch == '\u{200f}'
}