diff rust/hg-core/src/lib.rs @ 50860:f50e71fdfcb4

rust: improve the type on DirsMultiset::from_manifest

It could only return an HgPathError, but we didn't express this in the
type, so we needed some unreachable!()s.  Now that is expressed in the
type.

--- a/rust/hg-core/src/lib.rs	Wed Aug 02 09:59:49 2023 -0400
+++ b/rust/hg-core/src/lib.rs	Tue Aug 08 11:50:26 2023 -0400
@@ -66,6 +66,12 @@
     InvalidPath(HgPathError),
 }
 
+impl From<HgPathError> for DirstateMapError {
+    fn from(error: HgPathError) -> Self {
+        Self::InvalidPath(error)
+    }
+}
+
 impl fmt::Display for DirstateMapError {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
         match self {
@@ -83,6 +89,12 @@
     Common(errors::HgError),
 }
 
+impl From<HgPathError> for DirstateError {
+    fn from(error: HgPathError) -> Self {
+        Self::Map(DirstateMapError::InvalidPath(error))
+    }
+}
+
 impl fmt::Display for DirstateError {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
         match self {