From: Skgland <bb-github@t-online.de>
Date: Thu, 11 Mar 2021 00:18:11 +0000 (+0100)
Subject: improve comment
X-Git-Tag: v0.9.0~130^2~3
X-Git-Url: https://git.sagredo.dev/?a=commitdiff_plain;h=d437609365095665897eeb4b97e58cc67fe0d2ac;p=scryer-prolog.git

improve comment
---

diff --git a/src/machine/streams.rs b/src/machine/streams.rs
index e1401b0e..97c3b494 100644
--- a/src/machine/streams.rs
+++ b/src/machine/streams.rs
@@ -365,7 +365,17 @@ impl Stream {
     }
 
     pub fn bytes(&self) -> Option<std::cell::Ref<Vec<u8>>> {
-        // if Ref had an and_then function this could be simplified
+        /*
+        // Replacement of workaround for when we have stable https://github.com/rust-lang/rust/issues/81061
+        std::cell::Ref::filter_map(
+            self.stream_inst.0.borrow(),
+            |inner_stream| match inner_stream.stream_inst {
+                StreamInstance::Bytes(cursor) => Some(cursor.get_ref()),
+                _ => None,
+            },
+        )
+        .ok()
+        */
         let val = std::cell::Ref::map(self.stream_inst.0.borrow(), |inner_stream| {
             &inner_stream.stream_inst
         });