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use std::iter::FromIterator;
use self::sealed::AsConnectionOption;
use util::FlatCsv;
use {HeaderName, HeaderValue};
#[derive(Clone, Debug)]
pub struct Connection(FlatCsv);
derive_header! {
Connection(_),
name: CONNECTION
}
impl Connection {
#[inline]
pub fn close() -> Connection {
Connection(HeaderValue::from_static("close").into())
}
#[inline]
pub fn keep_alive() -> Connection {
Connection(HeaderValue::from_static("keep-alive").into())
}
#[inline]
pub fn upgrade() -> Connection {
Connection(HeaderValue::from_static("upgrade").into())
}
pub fn contains(&self, name: impl AsConnectionOption) -> bool {
let s = name.as_connection_option();
self.0
.iter()
.find(|&opt| opt.eq_ignore_ascii_case(s))
.is_some()
}
}
impl FromIterator<HeaderName> for Connection {
fn from_iter<I>(iter: I) -> Self
where
I: IntoIterator<Item = HeaderName>,
{
let flat = iter.into_iter().map(HeaderValue::from).collect();
Connection(flat)
}
}
mod sealed {
pub trait AsConnectionOption: Sealed {
fn as_connection_option(&self) -> &str;
}
pub trait Sealed {}
impl<'a> AsConnectionOption for &'a str {
fn as_connection_option(&self) -> &str {
*self
}
}
impl<'a> Sealed for &'a str {}
impl<'a> AsConnectionOption for &'a ::HeaderName {
fn as_connection_option(&self) -> &str {
self.as_ref()
}
}
impl<'a> Sealed for &'a ::HeaderName {}
impl AsConnectionOption for ::HeaderName {
fn as_connection_option(&self) -> &str {
self.as_ref()
}
}
impl Sealed for ::HeaderName {}
}