1 files changed, 151 insertions, 0 deletions
diff --git a/third_party/rust/uuid/src/v3.rs b/third_party/rust/uuid/src/v3.rs
new file mode 100644
index 0000000000..cc7cb9ac39
--- /dev/null
+++ b/third_party/rust/uuid/src/v3.rs
@@ -0,0 +1,151 @@
+use crate::Uuid;
+
+impl Uuid {
+    /// Creates a UUID using a name from a namespace, based on the MD5
+    /// hash.
+    ///
+    /// A number of namespaces are available as constants in this crate:
+    ///
+    /// * [`NAMESPACE_DNS`]
+    /// * [`NAMESPACE_OID`]
+    /// * [`NAMESPACE_URL`]
+    /// * [`NAMESPACE_X500`]
+    ///
+    /// Note that usage of this method requires the `v3` feature of this crate
+    /// to be enabled.
+    ///
+    /// # Examples
+    ///
+    /// Generating a MD5 DNS UUID for `rust-lang.org`:
+    ///
+    /// ```
+    /// # use uuid::{Uuid, Version};
+    /// let uuid = Uuid::new_v3(&Uuid::NAMESPACE_DNS, b"rust-lang.org");
+    ///
+    /// assert_eq!(Some(Version::Md5), uuid.get_version());
+    /// ```
+    ///
+    /// # References
+    ///
+    /// * [Version 3 and 5 UUIDs in RFC4122](https://www.rfc-editor.org/rfc/rfc4122#section-4.3)
+    ///
+    /// [`NAMESPACE_DNS`]: #associatedconstant.NAMESPACE_DNS
+    /// [`NAMESPACE_OID`]: #associatedconstant.NAMESPACE_OID
+    /// [`NAMESPACE_URL`]: #associatedconstant.NAMESPACE_URL
+    /// [`NAMESPACE_X500`]: #associatedconstant.NAMESPACE_X500
+    pub fn new_v3(namespace: &Uuid, name: &[u8]) -> Uuid {
+        crate::Builder::from_md5_bytes(crate::md5::hash(namespace.as_bytes(), name)).into_uuid()
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[cfg(target_arch = "wasm32")]
+    use wasm_bindgen_test::*;
+
+    use crate::{std::string::ToString, Variant, Version};
+
+    static FIXTURE: &'static [(&'static Uuid, &'static str, &'static str)] = &[
+        (
+            &Uuid::NAMESPACE_DNS,
+            "example.org",
+            "04738bdf-b25a-3829-a801-b21a1d25095b",
+        ),
+        (
+            &Uuid::NAMESPACE_DNS,
+            "rust-lang.org",
+            "c6db027c-615c-3b4d-959e-1a917747ca5a",
+        ),
+        (
+            &Uuid::NAMESPACE_DNS,
+            "42",
+            "5aab6e0c-b7d3-379c-92e3-2bfbb5572511",
+        ),
+        (
+            &Uuid::NAMESPACE_DNS,
+            "lorem ipsum",
+            "4f8772e9-b59c-3cc9-91a9-5c823df27281",
+        ),
+        (
+            &Uuid::NAMESPACE_URL,
+            "example.org",
+            "39682ca1-9168-3da2-a1bb-f4dbcde99bf9",
+        ),
+        (
+            &Uuid::NAMESPACE_URL,
+            "rust-lang.org",
+            "7ed45aaf-e75b-3130-8e33-ee4d9253b19f",
+        ),
+        (
+            &Uuid::NAMESPACE_URL,
+            "42",
+            "08998a0c-fcf4-34a9-b444-f2bfc15731dc",
+        ),
+        (
+            &Uuid::NAMESPACE_URL,
+            "lorem ipsum",
+            "e55ad2e6-fb89-34e8-b012-c5dde3cd67f0",
+        ),
+        (
+            &Uuid::NAMESPACE_OID,
+            "example.org",
+            "f14eec63-2812-3110-ad06-1625e5a4a5b2",
+        ),
+        (
+            &Uuid::NAMESPACE_OID,
+            "rust-lang.org",
+            "6506a0ec-4d79-3e18-8c2b-f2b6b34f2b6d",
+        ),
+        (
+            &Uuid::NAMESPACE_OID,
+            "42",
+            "ce6925a5-2cd7-327b-ab1c-4b375ac044e4",
+        ),
+        (
+            &Uuid::NAMESPACE_OID,
+            "lorem ipsum",
+            "5dd8654f-76ba-3d47-bc2e-4d6d3a78cb09",
+        ),
+        (
+            &Uuid::NAMESPACE_X500,
+            "example.org",
+            "64606f3f-bd63-363e-b946-fca13611b6f7",
+        ),
+        (
+            &Uuid::NAMESPACE_X500,
+            "rust-lang.org",
+            "bcee7a9c-52f1-30c6-a3cc-8c72ba634990",
+        ),
+        (
+            &Uuid::NAMESPACE_X500,
+            "42",
+            "c1073fa2-d4a6-3104-b21d-7a6bdcf39a23",
+        ),
+        (
+            &Uuid::NAMESPACE_X500,
+            "lorem ipsum",
+            "02f09a3f-1624-3b1d-8409-44eff7708208",
+        ),
+    ];
+
+    #[test]
+    #[cfg_attr(target_arch = "wasm32", wasm_bindgen_test)]
+    fn test_new() {
+        for &(ref ns, ref name, _) in FIXTURE {
+            let uuid = Uuid::new_v3(*ns, name.as_bytes());
+            assert_eq!(uuid.get_version(), Some(Version::Md5));
+            assert_eq!(uuid.get_variant(), Variant::RFC4122);
+        }
+    }
+
+    #[test]
+    #[cfg_attr(target_arch = "wasm32", wasm_bindgen_test)]
+    fn test_hyphenated_string() {
+        for &(ref ns, ref name, ref expected) in FIXTURE {
+            let uuid = Uuid::new_v3(*ns, name.as_bytes());
+            assert_eq!(uuid.hyphenated().to_string(), *expected);
+        }
+    }
+}