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use language_tags::LanguageTag;
use QualityItem;
header! {
/// `Accept-Language` header, defined in
///
/// The `Accept-Language` header field can be used by user agents to
/// indicate the set of natural languages that are preferred in the
/// response.
///
/// # ABNF
///
/// ```text
/// Accept-Language = 1#( language-range [ weight ] )
/// language-range = <language-range, see [RFC4647], Section 2.1>
/// ```
///
/// # Example values
/// * `da, en-gb;q=0.8, en;q=0.7`
/// * `en-us;q=1.0, en;q=0.5, fr`
///
/// # Examples
///
/// ```
/// use headers::{Headers, AcceptLanguage, LanguageTag, qitem};
///
/// let mut headers = Headers::new();
/// let mut langtag: LanguageTag = Default::default();
/// langtag.language = Some("en".to_owned());
/// langtag.region = Some("US".to_owned());
/// headers.set(
/// AcceptLanguage(vec![
/// qitem(langtag),
/// ])
/// );
/// ```
///
/// ```
/// # extern crate headers;
/// # #[macro_use] extern crate language_tags;
/// # use headers::{Headers, AcceptLanguage, QualityItem, q, qitem};
/// #
/// # fn main() {
/// let mut headers = Headers::new();
/// headers.set(
/// AcceptLanguage(vec![
/// qitem(langtag!(da)),
/// QualityItem::new(langtag!(en;;;GB), q(800)),
/// QualityItem::new(langtag!(en), q(700)),
/// ])
/// );
/// # }
/// ```
(AcceptLanguage, ACCEPT_LANGUAGE) => (QualityItem<LanguageTag>)+
test_accept_language {
// From the RFC
test_header!(test1, vec![b"da, en-gb;q=0.8, en;q=0.7"]);
// Own test
test_header!(
test2, vec![b"en-US, en; q=0.5, fr"],
Some(AcceptLanguage(vec![
qitem("en-US".parse().unwrap()),
QualityItem::new("en".parse().unwrap(), q(500)),
qitem("fr".parse().unwrap()),
])));
}
}
bench_header!(bench, AcceptLanguage,
{ vec![b"en-us;q=1.0, en;q=0.5, fr".to_vec()] });