htmler/error/
utils.rs

1use cssparser::Token;
2
3pub(crate) fn render_token(token: &Token<'_>) -> String {
4    // THIS TOOK FOREVER TO IMPLEMENT
5
6    match token {
7        // TODO: Give these guys some better names
8        Token::Ident(ident) => format!("{}", ident.clone()),
9        Token::AtKeyword(value) => format!("@{}", value.clone()),
10        Token::Hash(name) | Token::IDHash(name) => format!("#{}", name.clone()),
11        Token::QuotedString(value) => format!("\"{}\"", value.clone()),
12        Token::Number { has_sign: signed, value: num, int_value: _ }
13        | Token::Percentage { has_sign: signed, unit_value: num, int_value: _ } => render_number(*signed, *num, token),
14        Token::Dimension { has_sign: signed, value: num, int_value: _, unit } => {
15            format!("{}{}", render_int(*signed, *num), unit)
16        }
17        Token::WhiteSpace(_) => String::from(" "),
18        Token::Comment(comment) => format!("/* {} */", comment),
19        Token::Function(name) => format!("{}()", name.clone()),
20        Token::BadString(string) => format!("<Bad String {:?}>", string.clone()),
21        Token::BadUrl(url) => format!("<Bad URL {:?}>", url.clone()),
22        // Single-character token
23        sc_token => render_single_char_token(sc_token),
24    }
25}
26
27fn render_single_char_token(token: &Token) -> String {
28    String::from(match token {
29        Token::Colon => ":",
30        Token::Semicolon => ";",
31        Token::Comma => ",",
32        Token::IncludeMatch => "~=",
33        Token::DashMatch => "|=",
34        Token::PrefixMatch => "^=",
35        Token::SuffixMatch => "$=",
36        Token::SubstringMatch => "*=",
37        Token::CDO => "<!--",
38        Token::CDC => "-->",
39        Token::ParenthesisBlock => "<(",
40        Token::SquareBracketBlock => "<[",
41        Token::CurlyBracketBlock => "<{",
42        Token::CloseParenthesis => "<)",
43        Token::CloseSquareBracket => "<]",
44        Token::CloseCurlyBracket => "<}",
45        other => panic!("Token {:?} is not supposed to match as a single-character token!", other),
46    })
47}
48
49fn render_number(signed: bool, num: f32, token: &Token) -> String {
50    let num = render_int(signed, num);
51
52    match token {
53        Token::Number { .. } => num,
54        Token::Percentage { .. } => format!("{}%", num),
55        _ => panic!("render_number is not supposed to be called on a non-numerical token"),
56    }
57}
58
59fn render_int(signed: bool, num: f32) -> String {
60    if signed { render_int_signed(num) } else { render_int_unsigned(num) }
61}
62
63fn render_int_signed(num: f32) -> String {
64    if num > 0.0 { format!("+{}", num) } else { format!("-{}", num) }
65}
66
67fn render_int_unsigned(num: f32) -> String {
68    format!("{}", num)
69}
htmler/error/utils.rs

htmler/error/
utils.rs
