From 109e9b6e612cb536c76f7c4dcba3be93f59a62e2 Mon Sep 17 00:00:00 2001
From: Wim Looman <wim@nemo157.com>
Date: Fri, 24 Jan 2020 14:39:46 +0100
Subject: [PATCH] impl Debug for {Tiny,Array}VecIterator

---
 src/arrayvec.rs | 14 ++++++++++++++
 src/tinyvec.rs  | 17 +++++++++++++++++
 2 files changed, 31 insertions(+)

diff --git a/src/arrayvec.rs b/src/arrayvec.rs
index 5c75b14..8864a42 100644
--- a/src/arrayvec.rs
+++ b/src/arrayvec.rs
@@ -814,6 +814,14 @@ pub struct ArrayVecIterator<A: Array> {
   len: usize,
   data: A,
 }
+
+impl<A: Array> ArrayVecIterator<A> {
+  /// Returns the remaining items of this iterator as a slice.
+  pub fn as_slice(&self) -> &[A::Item] {
+    &self.data.as_slice()[self.base..self.len]
+  }
+}
+
 impl<A: Array> Iterator for ArrayVecIterator<A> {
   type Item = A::Item;
   #[inline]
@@ -853,6 +861,12 @@ impl<A: Array> Iterator for ArrayVecIterator<A> {
   }
 }
 
+impl<A: Array> Debug for ArrayVecIterator<A> where A::Item: Debug {
+  fn fmt(&self, f: &mut Formatter<'_>) -> core::fmt::Result {
+    f.debug_tuple("ArrayVecIterator").field(&self.as_slice()).finish()
+  }
+}
+
 impl<A: Array> IntoIterator for ArrayVec<A> {
   type Item = A::Item;
   type IntoIter = ArrayVecIterator<A>;
diff --git a/src/tinyvec.rs b/src/tinyvec.rs
index ab4e5e4..f313a39 100644
--- a/src/tinyvec.rs
+++ b/src/tinyvec.rs
@@ -684,6 +684,17 @@ pub enum TinyVecIterator<A: Array> {
   #[allow(missing_docs)]
   Heap(alloc::vec::IntoIter<A::Item>),
 }
+
+impl<A: Array> TinyVecIterator<A> {
+  /// Returns the remaining items of this iterator as a slice.
+  pub fn as_slice(&self) -> &[A::Item] {
+    match self {
+      TinyVecIterator::Inline(a) => a.as_slice(),
+      TinyVecIterator::Heap(v) => v.as_slice(),
+    }
+  }
+}
+
 impl<A: Array> Iterator for TinyVecIterator<A> {
   type Item = A::Item;
   #[inline]
@@ -724,6 +735,12 @@ impl<A: Array> Iterator for TinyVecIterator<A> {
   }
 }
 
+impl<A: Array> Debug for TinyVecIterator<A> where A::Item: Debug {
+  fn fmt(&self, f: &mut Formatter<'_>) -> core::fmt::Result {
+    f.debug_tuple("TinyVecIterator").field(&self.as_slice()).finish()
+  }
+}
+
 impl<A: Array> IntoIterator for TinyVec<A> {
   type Item = A::Item;
   type IntoIter = TinyVecIterator<A>;