1 files changed, 51 insertions, 0 deletions
diff --git a/third_party/rust/moz_cbor/src/lib.rs b/third_party/rust/moz_cbor/src/lib.rs
new file mode 100644
index 0000000000..de9f992df0
--- /dev/null
+++ b/third_party/rust/moz_cbor/src/lib.rs
@@ -0,0 +1,51 @@
+pub mod decoder;
+pub mod serializer;
+#[cfg(test)]
+mod test_decoder;
+#[cfg(test)]
+mod test_serializer;
+
+use std::cmp::Ordering;
+use std::collections::BTreeMap;
+
+#[derive(Debug, Clone, PartialEq, PartialOrd, Eq)]
+pub enum CborType {
+    Integer(u64),
+    SignedInteger(i64),
+    Tag(u64, Box<CborType>),
+    Bytes(Vec<u8>),
+    String(String),
+    Array(Vec<CborType>),
+    Map(BTreeMap<CborType, CborType>),
+    Null,
+}
+
+#[derive(Debug, PartialEq)]
+pub enum CborError {
+    DuplicateMapKey,
+    InputTooLarge,
+    InputValueOutOfRange,
+    LibraryError,
+    MalformedInput,
+    TruncatedInput,
+    UnsupportedType,
+}
+
+impl Ord for CborType {
+    /// Sorting for maps: RFC 7049 Section 3.9
+    ///
+    /// The keys in every map must be sorted lowest value to highest.
+    ///  *  If two keys have different lengths, the shorter one sorts
+    ///     earlier;
+    ///
+    ///  *  If two keys have the same length, the one with the lower value
+    ///     in (byte-wise) lexical order sorts earlier.
+    fn cmp(&self, other: &Self) -> Ordering {
+        let self_bytes = self.serialize();
+        let other_bytes = other.serialize();
+        if self_bytes.len() == other_bytes.len() {
+            return self_bytes.cmp(&other_bytes);
+        }
+        self_bytes.len().cmp(&other_bytes.len())
+    }
+}