From d718f226b81401eb2376a5bd0a56e1606319d59d Mon Sep 17 00:00:00 2001
From: Ted Mielczarek <ted@mielczarek.org>
Date: Thu, 13 Sep 2018 13:25:34 -0400
Subject: [PATCH] Implement IntoCtx/TryIntoCtx for references to primitive
 types.

This should help in fixing https://github.com/m4b/scroll_derive/issues/15 .
---
 src/ctx.rs | 29 ++++++++++++++++++++++++++++-
 1 file changed, 28 insertions(+), 1 deletion(-)

diff --git a/src/ctx.rs b/src/ctx.rs
index 6a42281..fdfb763 100644
--- a/src/ctx.rs
+++ b/src/ctx.rs
@@ -188,6 +188,12 @@ macro_rules! into_ctx_impl {
                 write_into!($typ, $size, self, dst, le);
             }
         }
+        impl<'a> IntoCtx<Endian> for &'a $typ {
+            #[inline]
+            fn into_ctx(self, dst: &mut [u8], le: Endian) {
+                (*self).into_ctx(dst, le)
+            }
+        }
         impl TryIntoCtx<Endian> for $typ where $typ: IntoCtx<Endian> {
             type Error = error::Error;
             type Size = usize;
@@ -201,6 +207,14 @@ macro_rules! into_ctx_impl {
                 }
             }
         }
+        impl<'a> TryIntoCtx<Endian> for &'a $typ {
+            type Error = error::Error;
+            type Size = usize;
+            #[inline]
+            fn try_into_ctx(self, dst: &mut [u8], le: Endian) -> error::Result<Self::Size> {
+                (*self).try_into_ctx(dst, le)
+            }
+        }
     }
 }
 
@@ -295,7 +309,6 @@ macro_rules! from_ctx_float_impl {
                 }
             }
         }
-
         impl<'a> TryFromCtx<'a, Endian> for $typ where $typ: FromCtx<Endian> {
             type Error = error::Error;
             type Size = usize;
@@ -334,6 +347,12 @@ macro_rules! into_ctx_float_impl {
                 write_into!(signed_to_unsigned!($typ), $size, transmute::<$typ, signed_to_unsigned!($typ)>(self), dst, le);
             }
         }
+        impl<'a> IntoCtx<Endian> for &'a $typ {
+            #[inline]
+            fn into_ctx(self, dst: &mut [u8], le: Endian) {
+                (*self).into_ctx(dst, le)
+            }
+        }
         impl TryIntoCtx<Endian> for $typ where $typ: IntoCtx<Endian> {
             type Error = error::Error;
             type Size = usize;
@@ -347,6 +366,14 @@ macro_rules! into_ctx_float_impl {
                 }
             }
         }
+        impl<'a> TryIntoCtx<Endian> for &'a $typ {
+            type Error = error::Error;
+            type Size = usize;
+            #[inline]
+            fn try_into_ctx(self, dst: &mut [u8], le: Endian) -> error::Result<Self::Size> {
+                (*self).try_into_ctx(dst, le)
+            }
+        }
     }
 }