utils: Loop: Provide and use Loop::ok

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

diff --git a/apitest/at-otter.rs b/apitest/at-otter.rs
index d5ce0ac280e0eeaa14dbda0f2a388486e13e1843..a718c9db6f337514f123c899b7905b3a9e035262 100644 (file)
--- a/apitest/at-otter.rs
+++ b/apitest/at-otter.rs
@@ -144,7 +144,7 @@ impl Session {
         let puse = puse.value().as_element().ok_or(Loop::Continue)?;
         let attr = puse.attr("data-info").ok_or(Loop::Break)?;
         let info = serde_json::from_str(attr).unwrap();
-        Ok::<_,Loop<Infallible>>(PieceInfo { id: (), info })
+        Loop::ok(PieceInfo { id: (), info })
       })
       .collect()
   }

diff --git a/src/utils.rs b/src/utils.rs
index 66cfcf3682c5bb6164effd5fcac53c11e57d3f8d..bd79992d8f5964de5d1404f68cf931f8abf3161d 100644 (file)
--- a/src/utils.rs
+++ b/src/utils.rs
@@ -302,6 +302,9 @@ pub enum Loop<E> {
 impl<E> From<E> for Loop<E> {
   fn from(e: E) -> Loop<E> { Loop::Error(e) }
 }
+impl Loop<Infallible> {
+  pub fn ok<T>(t: T) -> Result<T,Loop<Infallible>> { Ok(t) }
+}
 
 pub trait IteratorExt<U,E,F>: Iterator
   where F: FnMut(Self::Item) -> Result<U,Loop<E>>,