From 70b22d4dc0a3ea1fd9f2627ddfe7f42c8c4244ec Mon Sep 17 00:00:00 2001
From: dullbananas <dull.bananas0@gmail.com>
Date: Mon, 19 Jun 2023 06:46:45 -0700
Subject: [PATCH] Allow generics in impl_borrow_decode (#635)

* Allow generics in impl_borrow_decode

* Use impl_borrow_decode for PhantomData

* Update impls.rs

* Update mod.rs
---
 src/de/impls.rs | 6 +-----
 src/de/mod.rs   | 4 ++--
 2 files changed, 3 insertions(+), 7 deletions(-)

diff --git a/src/de/impls.rs b/src/de/impls.rs
index b1c80b0..93154f0 100644
--- a/src/de/impls.rs
+++ b/src/de/impls.rs
@@ -514,11 +514,7 @@ impl<T> Decode for core::marker::PhantomData<T> {
         Ok(core::marker::PhantomData)
     }
 }
-impl<'de, T> BorrowDecode<'de> for core::marker::PhantomData<T> {
-    fn borrow_decode<D: BorrowDecoder<'de>>(_: &mut D) -> Result<Self, DecodeError> {
-        Ok(core::marker::PhantomData)
-    }
-}
+impl_borrow_decode!(core::marker::PhantomData<T>, T);
 
 impl<T> Decode for Option<T>
 where
diff --git a/src/de/mod.rs b/src/de/mod.rs
index 07f35e3..061f5b4 100644
--- a/src/de/mod.rs
+++ b/src/de/mod.rs
@@ -100,8 +100,8 @@ pub trait BorrowDecode<'de>: Sized {
 /// Helper macro to implement `BorrowDecode` for any type that implements `Decode`.
 #[macro_export]
 macro_rules! impl_borrow_decode {
-    ($ty:ty) => {
-        impl<'de> $crate::BorrowDecode<'de> for $ty {
+    ($ty:ty $(, $param:ident),*) => {
+        impl<'de $(, $param)*> $crate::BorrowDecode<'de> for $ty {
             fn borrow_decode<D: $crate::de::BorrowDecoder<'de>>(
                 decoder: &mut D,
             ) -> core::result::Result<Self, $crate::error::DecodeError> {