1 files changed, 60 insertions, 0 deletions
diff --git a/third_party/rust/headers/src/common/referer.rs b/third_party/rust/headers/src/common/referer.rs
new file mode 100644
index 0000000000..864cbd723b
--- /dev/null
+++ b/third_party/rust/headers/src/common/referer.rs
@@ -0,0 +1,60 @@
+use std::str::FromStr;
+
+use http::header::HeaderValue;
+
+/// `Referer` header, defined in
+/// [RFC7231](http://tools.ietf.org/html/rfc7231#section-5.5.2)
+///
+/// The `Referer` [sic] header field allows the user agent to specify a
+/// URI reference for the resource from which the target URI was obtained
+/// (i.e., the "referrer", though the field name is misspelled).  A user
+/// agent MUST NOT include the fragment and userinfo components of the
+/// URI reference, if any, when generating the Referer field value.
+///
+/// ## ABNF
+///
+/// ```text
+/// Referer = absolute-URI / partial-URI
+/// ```
+///
+/// ## Example values
+///
+/// * `http://www.example.org/hypertext/Overview.html`
+///
+/// # Examples
+///
+/// ```
+/// # extern crate headers;
+/// use headers::Referer;
+///
+/// let r = Referer::from_static("/People.html#tim");
+/// ```
+#[derive(Debug, Clone, PartialEq)]
+pub struct Referer(HeaderValue);
+
+derive_header! {
+    Referer(_),
+    name: REFERER
+}
+
+impl Referer {
+    /// Create a `Referer` with a static string.
+    ///
+    /// # Panic
+    ///
+    /// Panics if the string is not a legal header value.
+    pub fn from_static(s: &'static str) -> Referer {
+        Referer(HeaderValue::from_static(s))
+    }
+}
+
+error_type!(InvalidReferer);
+
+impl FromStr for Referer {
+    type Err = InvalidReferer;
+    fn from_str(src: &str) -> Result<Self, Self::Err> {
+        HeaderValue::from_str(src)
+            .map(Referer)
+            .map_err(|_| InvalidReferer { _inner: () })
+    }
+}