feat: Add PortOffset::opposite

CQCL · Jun 18, 2024 · f7b5628 · f7b5628
1 parent ab60561
commit f7b5628
Showing 1 changed file with 12 additions and 0 deletions.
diff --git a/src/lib.rs b/src/lib.rs
@@ -368,6 +368,18 @@ impl PortOffset {
             PortOffset::Outgoing(offset) => offset as usize,
         }
     }
+
+    /// Returns the opposite port offset.
+    ///
+    /// This maps `PortOffset::Incoming(x)` to `PortOffset::Outgoing(x)` and
+    /// vice versa.
+    #[inline(always)]
+    pub fn opposite(&self) -> Self {
+        match self {
+            &PortOffset::Incoming(idx) => PortOffset::Outgoing(idx),
+            &PortOffset::Outgoing(idx) => PortOffset::Incoming(idx),
+        }
+    }
 }
 
 impl Default for PortOffset {