Vendor dependencies for 0.3.0 release

vendor/derive_more/tests/index_mut.rs

@@ -0,0 +1,36 @@
+#![allow(dead_code)] // some code is tested for type checking only
+
+use derive_more::IndexMut;
+
+#[derive(IndexMut)]
+struct MyVec(Vec<i32>);
+// `Index` implementation is required for `IndexMut`.
+impl<__IdxT> ::core::ops::Index<__IdxT> for MyVec
+where
+    Vec<i32>: ::core::ops::Index<__IdxT>,
+{
+    type Output = <Vec<i32> as ::core::ops::Index<__IdxT>>::Output;
+    #[inline]
+    fn index(&self, idx: __IdxT) -> &Self::Output {
+        <Vec<i32> as ::core::ops::Index<__IdxT>>::index(&self.0, idx)
+    }
+}
+
+#[derive(IndexMut)]
+struct Numbers {
+    #[index_mut]
+    numbers: Vec<i32>,
+    useless: bool,
+}
+
+// `Index` implementation is required for `IndexMut`.
+impl<__IdxT> ::core::ops::Index<__IdxT> for Numbers
+where
+    Vec<i32>: ::core::ops::Index<__IdxT>,
+{
+    type Output = <Vec<i32> as ::core::ops::Index<__IdxT>>::Output;
+    #[inline]
+    fn index(&self, idx: __IdxT) -> &Self::Output {
+        <Vec<i32> as ::core::ops::Index<__IdxT>>::index(&self.numbers, idx)
+    }
+}