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use Error;
use header::{HeaderName, HeaderValue, HeaderMap};
use method::Method;
use sealed::Sealed;
use status::StatusCode;
use uri::{Scheme, Authority, PathAndQuery, Uri};
pub trait HttpTryFrom<T>: Sized + Sealed {
type Error: Into<Error>;
#[doc(hidden)]
fn try_from(t: T) -> Result<Self, Self::Error>;
}
pub(crate) trait HttpTryInto<T>: Sized {
fn http_try_into(self) -> Result<T, Error>;
}
#[doc(hidden)]
impl<T, U> HttpTryInto<U> for T
where
U: HttpTryFrom<T>,
T: Sized,
{
fn http_try_into(self) -> Result<U, Error> {
HttpTryFrom::try_from(self)
.map_err(|e: U::Error| e.into())
}
}
macro_rules! reflexive {
($($t:ty,)*) => ($(
impl HttpTryFrom<$t> for $t {
type Error = Error;
fn try_from(t: Self) -> Result<Self, Self::Error> {
Ok(t)
}
}
impl Sealed for $t {}
)*)
}
reflexive! {
Uri,
Method,
StatusCode,
HeaderName,
HeaderValue,
Scheme,
Authority,
PathAndQuery,
}
impl<T> HttpTryFrom<HeaderMap<T>> for HeaderMap<T> {
type Error = Error;
fn try_from(t: Self) -> Result<Self, Self::Error> {
Ok(t)
}
}
impl<T> Sealed for HeaderMap<T> {}