replace as_str impl with derive(AsRefStr)

Signed-off-by: bg-furiosa <[email protected]>

device-api/bin/show_topology.rs

@@ -24,7 +24,7 @@ async fn main() -> Result<(), DeviceError> {
         let mut row = vec![device1.to_string().cell()];
         for device2 in devices.iter() {
             let link_type = topology.get_link_type(device1, device2);
-            row.push(link_type.as_str().cell());
+            row.push(link_type.as_ref().cell());
         }
         rows.push(row);
     }

device-api/src/topology/mod.rs

@@ -1,6 +1,8 @@
 #![allow(warnings)]
 use std::collections::BTreeMap;
 
+use strum_macros::AsRefStr;
+
 use crate::topology::hwloc::{Hwloc, HwlocTopology};
 use crate::topology::hwloc_binding::*;
 use crate::topology::LinkType::*;
@@ -9,7 +11,7 @@ use crate::{Device, DeviceResult};
 mod hwloc;
 mod hwloc_binding;
 
-#[derive(Clone, Copy, Debug, PartialEq)]
+#[derive(AsRefStr, Clone, Copy, Debug, PartialEq)]
 pub enum LinkType {
     // LinkTypeUnknown unknown
     LinkTypeUnknown = 0,
@@ -31,18 +33,6 @@ pub enum LinkType {
     LinkTypeSoc = 70,
 }
 
-impl LinkType {
-    pub fn as_str(&self) -> &'static str {
-        match self {
-            LinkTypeUnknown => "LinkTypeUnknown",
-            LinkTypeInterconnect => "LinkTypeInterconnect",
-            LinkTypeCPU => "LinkTypeCPU",
-            LinkTypeHostBridge => "LinkTypeHostBridge",
-            LinkTypeSoc => "LinkTypeSoc",
-        }
-    }
-}
-
 pub trait HardwareTopologyHint {
     fn get_hw_topology_hint(&self) -> String;
 }