From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Wed, 4 May 2022 21:55:50 +0000 (+0100)
Subject: materials format: Provide try_from_integer
X-Git-Tag: otter-1.1.0~277
X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=commitdiff_plain;h=dea673e5442ffe0a0ec151e5a4be2ab8b48a3a5d;p=otter.git

materials format: Provide try_from_integer

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>
---

diff --git a/src/materials-format.rs b/src/materials-format.rs
index 9bdf634c..223f0ad6 100644
--- a/src/materials-format.rs
+++ b/src/materials-format.rs
@@ -49,6 +49,15 @@ impl TryFrom<Raw> for Version {
   }
 }
 
+impl Version {
+  #[throws(VersionError)]
+  pub fn try_from_integer<I>(i: I) -> Version
+  where I: num::Integer + ToPrimitive {
+    let v = i.to_u32().ok_or_else(|| MFVE::Other("integer out of range"))?;
+    v.try_into()?
+  }
+}
+
 impl FromStr for Version {
   type Err = VersionError;
   #[throws(VersionError)]