1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33

// Reusable pattern for the first byte of an identifier.
#[macro_export]
macro_rules! ident_start {
    () => {
        b'a'..=b'z' | b'A'..=b'Z' | b'_' | b'\x80'..=b'\xff'
    };
}

// Reusable pattern for identifier after the first byte.
#[macro_export]
macro_rules! ident {
    () => {
        b'0'..=b'9' | b'a'..=b'z' | b'A'..=b'Z' | b'_' | b'\x80'..=b'\xff'
    };
}

#[macro_export]
macro_rules! lexer_bail {
    ($state:expr, $issue:ident($($args:expr),+$(,)?)$(,)?) => {
        {
            let issue = $crate::lexer::issue::$issue($state, $($args,)+);

            return Err(Box::new(issue));
        }
    };
    ($state:expr, $issue:ident) => {
        {
            let issue = $crate::lexer::issue::$issue($state);

            return Err(Box::new(issue));
        }
    };
}