Implement Error for OidParseError

src/asn1_types/oid.rs

@@ -9,16 +9,20 @@ use alloc::vec::Vec;
 use core::{
     convert::TryFrom, fmt, iter::FusedIterator, marker::PhantomData, ops::Shl, str::FromStr,
 };
+use displaydoc::Display;
 use num_traits::Num;
 
 /// An error for OID parsing functions.
-#[derive(Debug)]
+#[derive(Debug, Display)]
+#[cfg_attr(feature = "std", derive(thiserror::Error))]
 pub enum OidParseError {
+    /// Non-relative OIDs must be at least 2 components long and relative OIDs must not be empty
     TooShort,
-    /// Signalizes that the first or second component is too large.
-    /// The first must be within the range 0 to 6 (inclusive).
-    /// The second component must be less than 40.
+
+    /// The first OID component must be < 7 and the second must be < 40
     FirstComponentsTooLarge,
+
+    /// OID component is not an integer
     ParseIntError,
 }
 
@@ -31,7 +35,6 @@ pub enum OidParseError {
 /// create oids. For example `oid!(1.2.44.233)` or `oid!(rel 44.233)`
 /// for relative oids. See the [module documentation](index.html) for more information.
 #[derive(Hash, PartialEq, Eq, Clone)]
-
 pub struct Oid<'a> {
     asn1: Cow<'a, [u8]>,
     relative: bool,