Merge pull request #210 from scanner-inc/arbitrary-for-cmp-reverse

Implement Arbitrary for core::cmp::Reverse

Author: Manishearth

src/foreign/core/cmp.rs

@@ -0,0 +1,23 @@
+use {
+    crate::{size_hint, Arbitrary, Result, Unstructured},
+    core::cmp::Reverse,
+};
+
+impl<'a, A> Arbitrary<'a> for Reverse<A>
+where
+    A: Arbitrary<'a>,
+{
+    fn arbitrary(u: &mut Unstructured<'a>) -> Result<Self> {
+        Arbitrary::arbitrary(u).map(Self)
+    }
+
+    #[inline]
+    fn size_hint(depth: usize) -> (usize, Option<usize>) {
+        Self::try_size_hint(depth).unwrap_or_default()
+    }
+
+    #[inline]
+    fn try_size_hint(depth: usize) -> Result<(usize, Option<usize>), crate::MaxRecursionReached> {
+        size_hint::try_recursion_guard(depth, <A as Arbitrary>::try_size_hint)
+    }
+}

src/foreign/core/mod.rs

@@ -6,6 +6,7 @@ mod array;
 mod bool;
 mod cell;
 mod char;
+mod cmp;
 mod iter;
 mod marker;
 mod num;