Implement std::convert::TryFrom<Config> for RawConfig

Previously, the RawConfig struct had a try_from function.  As the
TryFrom trait has been stabilized with Rust 1.34.0, we can use it
instead.

2 files changed, 7 insertions, 2 deletions

diff --git a/src/auth.rs b/src/auth.rs
index 0b000f7..cab1021 100644
--- a/src/auth.rs
+++ b/src/auth.rs
@@ -1,6 +1,7 @@
 // Copyright (C) 2018-2019 Robin Krahl <robin.krahl@ireas.org>
 // SPDX-License-Identifier: MIT
 
+use std::convert::TryFrom as _;
 use std::marker;
 use std::ops;
 use std::os::raw::c_char;
diff --git a/src/config.rs b/src/config.rs
index c273792..cb678d7 100644
--- a/src/config.rs
+++ b/src/config.rs
@@ -1,6 +1,8 @@
 // Copyright (C) 2018-2019 Robin Krahl <robin.krahl@ireas.org>
 // SPDX-License-Identifier: MIT
 
+use std::convert;
+
 use crate::error::{Error, LibraryError};
 
 /// The configuration for a Nitrokey.
@@ -68,8 +70,10 @@ impl Config {
     }
 }
 
-impl RawConfig {
-    pub fn try_from(config: Config) -> Result<RawConfig, Error> {
+impl convert::TryFrom<Config> for RawConfig {
+    type Error = Error;
+
+    fn try_from(config: Config) -> Result<RawConfig, Error> {
         Ok(RawConfig {
             numlock: option_to_config_otp_slot(config.numlock)?,
             capslock: option_to_config_otp_slot(config.capslock)?,