Function is_boundary_char

src/classmap_scanner.rs:1571–1573

(c: u8)

/// Check if a character is a valid boundary (not part of an identifier).
#[inline]
fn is_boundary_char(c: u8) -> bool {
    !c.is_ascii_alphanumeric() && c != b'_' && c != b':' && c != b'$'
}

/// Find the next single-quote or backslash in a slice, returning the
/// offset and the byte found.  Uses `memchr` for SIMD acceleration.