refactor: improve readability of cast functions

3 files changed, 20 insertions, 23 deletions

diff --git a/src/libs/intertrait/cast/arc.rs b/src/libs/intertrait/cast/arc.rs
index 33d84d2..1742c32 100644
--- a/src/libs/intertrait/cast/arc.rs
+++ b/src/libs/intertrait/cast/arc.rs
@@ -31,19 +31,16 @@ impl<CastFromSelf: ?Sized + CastFromSync> CastArc for CastFromSelf
         self: Arc<Self>,
     ) -> Result<Arc<OtherTrait>, CastError>
     {
-        let caster = get_caster::<OtherTrait>((*self).type_id()).map_or_else(
-            || {
-                Err(CastError::CastFailed {
-                    from: type_name::<CastFromSelf>(),
-                    to: type_name::<OtherTrait>(),
-                })
-            },
-            Ok,
-        )?;
+        let caster =
+            get_caster::<OtherTrait>((*self).type_id()).ok_or(CastError::CastFailed {
+                from: type_name::<CastFromSelf>(),
+                to: type_name::<OtherTrait>(),
+            })?;
 
-        match caster.opt_cast_arc {
-            Some(cast_arc) => Ok(cast_arc(self.arc_any())),
-            None => Err(CastError::NotArcCastable(type_name::<OtherTrait>())),
-        }
+        let cast_arc = caster
+            .opt_cast_arc
+            .ok_or(CastError::NotArcCastable(type_name::<OtherTrait>()))?;
+
+        Ok(cast_arc(self.arc_any()))
     }
 }
diff --git a/src/libs/intertrait/cast/box.rs b/src/libs/intertrait/cast/box.rs
index c463c2f..5694d97 100644
--- a/src/libs/intertrait/cast/box.rs
+++ b/src/libs/intertrait/cast/box.rs
@@ -30,12 +30,12 @@ impl<CastFromSelf: ?Sized + CastFrom> CastBox for CastFromSelf
         self: Box<Self>,
     ) -> Result<Box<OtherTrait>, CastError>
     {
-        match get_caster::<OtherTrait>((*self).type_id()) {
-            Some(caster) => Ok((caster.cast_box)(self.box_any())),
-            None => Err(CastError::CastFailed {
+        let caster =
+            get_caster::<OtherTrait>((*self).type_id()).ok_or(CastError::CastFailed {
                 from: type_name::<CastFromSelf>(),
                 to: type_name::<OtherTrait>(),
-            }),
-        }
+            })?;
+
+        Ok((caster.cast_box)(self.box_any()))
     }
 }
diff --git a/src/libs/intertrait/cast/rc.rs b/src/libs/intertrait/cast/rc.rs
index 63c0024..805bcd7 100644
--- a/src/libs/intertrait/cast/rc.rs
+++ b/src/libs/intertrait/cast/rc.rs
@@ -30,12 +30,12 @@ impl<CastFromSelf: ?Sized + CastFrom> CastRc for CastFromSelf
         self: Rc<Self>,
     ) -> Result<Rc<OtherTrait>, CastError>
     {
-        match get_caster::<OtherTrait>((*self).type_id()) {
-            Some(caster) => Ok((caster.cast_rc)(self.rc_any())),
-            None => Err(CastError::CastFailed {
+        let caster =
+            get_caster::<OtherTrait>((*self).type_id()).ok_or(CastError::CastFailed {
                 from: type_name::<CastFromSelf>(),
                 to: type_name::<OtherTrait>(),
-            }),
-        }
+            })?;
+
+        Ok((caster.cast_rc)(self.rc_any()))
     }
 }