1 files changed, 40 insertions, 0 deletions
diff --git a/vendor/bytes/src/buf/vec_deque.rs b/vendor/bytes/src/buf/vec_deque.rs
new file mode 100644
index 00000000..55d5636b
--- /dev/null
+++ b/vendor/bytes/src/buf/vec_deque.rs
@@ -0,0 +1,40 @@
+use alloc::collections::VecDeque;
+#[cfg(feature = "std")]
+use std::io;
+
+use super::Buf;
+
+impl Buf for VecDeque<u8> {
+    fn remaining(&self) -> usize {
+        self.len()
+    }
+
+    fn chunk(&self) -> &[u8] {
+        let (s1, s2) = self.as_slices();
+        if s1.is_empty() {
+            s2
+        } else {
+            s1
+        }
+    }
+
+    #[cfg(feature = "std")]
+    fn chunks_vectored<'a>(&'a self, dst: &mut [io::IoSlice<'a>]) -> usize {
+        if self.is_empty() || dst.is_empty() {
+            return 0;
+        }
+
+        let (s1, s2) = self.as_slices();
+        dst[0] = io::IoSlice::new(s1);
+        if s2.is_empty() || dst.len() == 1 {
+            return 1;
+        }
+
+        dst[1] = io::IoSlice::new(s2);
+        2
+    }
+
+    fn advance(&mut self, cnt: usize) {
+        self.drain(..cnt);
+    }
+}