Implement Display for ByteOffset

Without this patch ErrorTree<BytesOffset> does not implement Error which makes using it (e.g. with final_parser) a lot more cumbersome.
Lucretiel · Aug 11, 2022 · 3513333 · 3513333
1 parent f5cc556
commit 3513333
Showing 1 changed file with 10 additions and 0 deletions.
diff --git a/src/final_parser.rs b/src/final_parser.rs
@@ -72,6 +72,16 @@ impl<I> RecreateContext<I> for I {
 #[derive(Debug, Clone, Copy, PartialEq, Eq)]
 pub struct ByteOffset(pub usize);
 
+impl Display for ByteOffset {
+    fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
+        if f.alternate() {
+            write!(f, "byte offset {}", self.0)
+        } else {
+            write!(f, "{}", self.0)
+        }
+    }
+}
+
 impl<I: Offset> RecreateContext<I> for ByteOffset {
     fn recreate_context(original_input: I, tail: I) -> Self {
         ByteOffset(original_input.offset(&tail))