1 files changed, 75 insertions, 0 deletions
diff --git a/third_party/rust/http/src/version.rs b/third_party/rust/http/src/version.rs
new file mode 100644
index 0000000000..d8b713061e
--- /dev/null
+++ b/third_party/rust/http/src/version.rs
@@ -0,0 +1,75 @@
+//! HTTP version
+//!
+//! This module contains a definition of the `Version` type. The `Version`
+//! type is intended to be accessed through the root of the crate
+//! (`http::Version`) rather than this module.
+//!
+//! The `Version` type contains constants that represent the various versions
+//! of the HTTP protocol.
+//!
+//! # Examples
+//!
+//! ```
+//! use http::Version;
+//!
+//! let http11 = Version::HTTP_11;
+//! let http2 = Version::HTTP_2;
+//! assert!(http11 != http2);
+//!
+//! println!("{:?}", http2);
+//! ```
+
+use std::fmt;
+
+/// Represents a version of the HTTP spec.
+#[derive(PartialEq, PartialOrd, Copy, Clone, Eq, Ord, Hash)]
+pub struct Version(Http);
+
+impl Version {
+    /// `HTTP/0.9`
+    pub const HTTP_09: Version = Version(Http::Http09);
+
+    /// `HTTP/1.0`
+    pub const HTTP_10: Version = Version(Http::Http10);
+
+    /// `HTTP/1.1`
+    pub const HTTP_11: Version = Version(Http::Http11);
+
+    /// `HTTP/2.0`
+    pub const HTTP_2: Version = Version(Http::H2);
+
+    /// `HTTP/3.0`
+    pub const HTTP_3: Version = Version(Http::H3);
+}
+
+#[derive(PartialEq, PartialOrd, Copy, Clone, Eq, Ord, Hash)]
+enum Http {
+    Http09,
+    Http10,
+    Http11,
+    H2,
+    H3,
+    __NonExhaustive,
+}
+
+impl Default for Version {
+    #[inline]
+    fn default() -> Version {
+        Version::HTTP_11
+    }
+}
+
+impl fmt::Debug for Version {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        use self::Http::*;
+
+        f.write_str(match self.0 {
+            Http09 => "HTTP/0.9",
+            Http10 => "HTTP/1.0",
+            Http11 => "HTTP/1.1",
+            H2 => "HTTP/2.0",
+            H3 => "HTTP/3.0",
+            __NonExhaustive => unreachable!(),
+        })
+    }
+}