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use std::fmt;
use std::str::FromStr;
use error::Error;
use self::HttpVersion::{Http09, Http10, Http11, H2, H2c};
#[derive(PartialEq, PartialOrd, Copy, Clone, Eq, Ord, Hash, Debug)]
pub enum HttpVersion {
Http09,
Http10,
Http11,
H2,
H2c,
#[doc(hidden)]
__DontMatchMe,
}
impl fmt::Display for HttpVersion {
fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
fmt.write_str(match *self {
Http09 => "HTTP/0.9",
Http10 => "HTTP/1.0",
Http11 => "HTTP/1.1",
H2 => "h2",
H2c => "h2c",
HttpVersion::__DontMatchMe => unreachable!(),
})
}
}
impl FromStr for HttpVersion {
type Err = Error;
fn from_str(s: &str) -> Result<HttpVersion, Error> {
Ok(match s {
"HTTP/0.9" => Http09,
"HTTP/1.0" => Http10,
"HTTP/1.1" => Http11,
"h2" => H2,
"h2c" => H2c,
_ => return Err(Error::Version),
})
}
}
impl Default for HttpVersion {
fn default() -> HttpVersion {
Http11
}
}
#[cfg(test)]
mod tests {
use std::str::FromStr;
use error::Error;
use super::HttpVersion;
use super::HttpVersion::{Http09,Http10,Http11,H2,H2c};
#[test]
fn test_default() {
assert_eq!(Http11, HttpVersion::default());
}
#[test]
fn test_from_str() {
assert_eq!(Http09, HttpVersion::from_str("HTTP/0.9").unwrap());
assert_eq!(Http10, HttpVersion::from_str("HTTP/1.0").unwrap());
assert_eq!(Http11, HttpVersion::from_str("HTTP/1.1").unwrap());
assert_eq!(H2, HttpVersion::from_str("h2").unwrap());
assert_eq!(H2c, HttpVersion::from_str("h2c").unwrap());
}
#[test]
fn test_from_str_panic() {
match HttpVersion::from_str("foo") {
Err(Error::Version) => assert!(true),
Err(_) => assert!(false),
Ok(_) => assert!(false),
}
}
}