1 files changed, 51 insertions, 0 deletions
diff --git a/third_party/rust/scroll/src/endian.rs b/third_party/rust/scroll/src/endian.rs
new file mode 100644
index 0000000000..06d7a1dc1c
--- /dev/null
+++ b/third_party/rust/scroll/src/endian.rs
@@ -0,0 +1,51 @@
+#[derive(PartialEq, Eq, Copy, Debug, Clone)]
+/// The endianness (byte order) of a stream of bytes
+pub enum Endian {
+    Little,
+    Big,
+}
+
+/// Little Endian byte order context
+pub const LE: Endian = Endian::Little;
+/// Big Endian byte order context
+pub const BE: Endian = Endian::Big;
+/// Network byte order context
+pub const NETWORK: Endian = Endian::Big;
+#[cfg(target_endian = "little")]
+/// The machine's native byte order
+pub const NATIVE: Endian = LE;
+#[cfg(target_endian = "big")]
+/// The machine's native byte order
+pub const NATIVE: Endian = BE;
+
+impl Default for Endian {
+    #[inline]
+    fn default() -> Self {
+        NATIVE
+    }
+}
+
+impl From<bool> for Endian {
+    #[inline]
+    fn from(little_endian: bool) -> Self {
+        if little_endian {
+            LE
+        } else {
+            BE
+        }
+    }
+}
+
+impl Endian {
+    #[inline]
+    pub fn network() -> Endian {
+        NETWORK
+    }
+    #[inline]
+    pub fn is_little(&self) -> bool {
+        match *self {
+            LE => true,
+            _ => false,
+        }
+    }
+}