1 files changed, 127 insertions, 0 deletions
diff --git a/third_party/rust/neqo-http3/src/request_target.rs b/third_party/rust/neqo-http3/src/request_target.rs
new file mode 100644
index 0000000000..a58445b5d7
--- /dev/null
+++ b/third_party/rust/neqo-http3/src/request_target.rs
@@ -0,0 +1,127 @@
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+#![allow(clippy::module_name_repetitions)]
+
+use std::fmt::{Debug, Formatter};
+use url::{ParseError, Url};
+
+pub trait RequestTarget: Debug {
+    fn scheme(&self) -> &str;
+    fn authority(&self) -> &str;
+    fn path(&self) -> &str;
+}
+
+pub struct RefRequestTarget<'s, 'a, 'p> {
+    scheme: &'s str,
+    authority: &'a str,
+    path: &'p str,
+}
+
+impl RequestTarget for RefRequestTarget<'_, '_, '_> {
+    fn scheme(&self) -> &str {
+        self.scheme
+    }
+
+    fn authority(&self) -> &str {
+        self.authority
+    }
+
+    fn path(&self) -> &str {
+        self.path
+    }
+}
+
+impl<'s, 'a, 'p> RefRequestTarget<'s, 'a, 'p> {
+    #[must_use]
+    pub fn new(scheme: &'s str, authority: &'a str, path: &'p str) -> Self {
+        Self {
+            scheme,
+            authority,
+            path,
+        }
+    }
+}
+
+impl Debug for RefRequestTarget<'_, '_, '_> {
+    fn fmt(&self, f: &mut Formatter) -> ::std::fmt::Result {
+        write!(f, "{}://{}{}", self.scheme, self.authority, self.path)
+    }
+}
+
+/// `AsRequestTarget` is a trait that produces a `RequestTarget` that
+/// refers to the identified object.
+pub trait AsRequestTarget<'x> {
+    type Target: RequestTarget;
+    type Error;
+    /// Produce a `RequestTarget` that refers to `self`.
+    /// # Errors
+    /// This method can generate an error of type `Self::Error`
+    /// if the conversion is unsuccessful.
+    fn as_request_target(&'x self) -> Result<Self::Target, Self::Error>;
+}
+
+impl<'x, S, A, P> AsRequestTarget<'x> for (S, A, P)
+where
+    S: AsRef<str> + 'x,
+    A: AsRef<str> + 'x,
+    P: AsRef<str> + 'x,
+{
+    type Target = RefRequestTarget<'x, 'x, 'x>;
+    type Error = ();
+    fn as_request_target(&'x self) -> Result<Self::Target, Self::Error> {
+        Ok(RefRequestTarget::new(
+            self.0.as_ref(),
+            self.1.as_ref(),
+            self.2.as_ref(),
+        ))
+    }
+}
+
+impl<'x> AsRequestTarget<'x> for Url {
+    type Target = RefRequestTarget<'x, 'x, 'x>;
+    type Error = ();
+    fn as_request_target(&'x self) -> Result<Self::Target, Self::Error> {
+        Ok(RefRequestTarget::new(
+            self.scheme(),
+            self.host_str().unwrap_or(""),
+            self.path(),
+        ))
+    }
+}
+
+pub struct UrlRequestTarget {
+    url: Url,
+}
+
+impl RequestTarget for UrlRequestTarget {
+    fn scheme(&self) -> &str {
+        self.url.scheme()
+    }
+
+    fn authority(&self) -> &str {
+        self.url.host_str().unwrap_or("")
+    }
+
+    fn path(&self) -> &str {
+        self.url.path()
+    }
+}
+
+impl Debug for UrlRequestTarget {
+    fn fmt(&self, f: &mut Formatter) -> ::std::fmt::Result {
+        self.url.fmt(f)
+    }
+}
+
+impl<'x> AsRequestTarget<'x> for str {
+    type Target = UrlRequestTarget;
+    type Error = ParseError;
+    fn as_request_target(&'x self) -> Result<Self::Target, Self::Error> {
+        let url = Url::parse(self)?;
+        Ok(UrlRequestTarget { url })
+    }
+}