From c0df9a3b95b50a5b9d08368a296e6d70e5f515f2 Mon Sep 17 00:00:00 2001
From: Matt Harvey <mattharvey@google.com>
Date: Tue, 14 Sep 2021 16:04:34 -0700
Subject: [PATCH] kata-io alias analogous to io::Result

Sometimes it is useful for kata-io to be API-compatible with std::io
(e.g. porting a ZMODEM library). std::io has a similarly defined alias
where E is its own error type.

Change-Id: Idaf88fb1d41bcb984608d82a0ea222290c78f5c4
GitOrigin-RevId: 5738e6ac705b6fe3b48dd64891808cf50b75afb7
---
 apps/system/components/DebugConsole/kata-io/src/lib.rs | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/apps/system/components/DebugConsole/kata-io/src/lib.rs b/apps/system/components/DebugConsole/kata-io/src/lib.rs
index 5eb7877..9ca92d3 100644
--- a/apps/system/components/DebugConsole/kata-io/src/lib.rs
+++ b/apps/system/components/DebugConsole/kata-io/src/lib.rs
@@ -2,14 +2,16 @@
 
 pub struct Error;
 
+pub type Result<T> = core::result::Result<T, Error>;
+
 /// Interface for the CLI to consume bytes.
 pub trait Read {
-    fn read(&mut self, buf: &mut [u8]) -> Result<usize, Error>;
+    fn read(&mut self, buf: &mut [u8]) -> Result<usize>;
 }
 
 /// Interface for the CLI to emit bytes.
 pub trait Write {
-    fn write(&mut self, buf: &[u8]) -> Result<usize, Error>;
+    fn write(&mut self, buf: &[u8]) -> Result<usize>;
 }
 
 /// Adapter for writing core::fmt formatted strings.
@@ -24,7 +26,7 @@ impl core::fmt::Write for dyn Write + '_ {
 }
 
 impl dyn Read + '_ {
-    pub fn get_u8(&mut self) -> Result<u8, Error> {
+    pub fn get_u8(&mut self) -> Result<u8> {
         let mut buf: [u8; 1] = [0u8];
         let n_read = self.read(&mut buf)?;
         match n_read {