From 31c3df1ff1633fd408319c14ff87d79f29515b20 Mon Sep 17 00:00:00 2001
From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Thu, 12 Nov 2020 00:22:15 +0000
Subject: [PATCH] wip thunk etc.

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>
---
 src/bin/otter.rs | 7 ++++---
 src/utils.rs     | 8 ++++++++
 2 files changed, 12 insertions(+), 3 deletions(-)

diff --git a/src/bin/otter.rs b/src/bin/otter.rs
index 5efb3208..57e42f2f 100644
--- a/src/bin/otter.rs
+++ b/src/bin/otter.rs
@@ -128,7 +128,8 @@ fn parse_args<T:Default,U>(
   mem::drop(ap);
   let completed  =
     completer(parsed).unwrap_or_else(|e:ArgumentParseError| {
-      let ap = apmaker(&mut default());
+      let mut def = default();
+      let ap = apmaker(&mut def);
       ap.error(&us, &e.0, &mut stderr);
       exit(EXIT_USAGE);
     });
@@ -197,10 +198,10 @@ fn main() {
     let config = Thunk::new(||{
       ServerConfig::read(config_filename.as_ref().map(String::as_str))
         .context("read config file")?;
-      Ok(otter::global::config())
+      Ok::<_,AE>(otter::global::config())
     });
     let socket_path = socket_path.map(Ok::<_,APE>).unwrap_or_else(||{
-      Ok(config?.command_socket.clone())
+      Ok((*config)?.command_socket.clone())
     })?;
     Ok((subcommand, subargs, MainOpts {
       account,
diff --git a/src/utils.rs b/src/utils.rs
index 87a98572..26196c2f 100644
--- a/src/utils.rs
+++ b/src/utils.rs
@@ -92,4 +92,12 @@ impl<T: Sync, F: Sync + FnOnce() -> T> Deref for Thunk<T, F> {
   }
 }
 
+impl<Y: Sync, E: Sync, F: Sync + FnOnce() -> Result<Y,E>>
+  From<Thunk<Result<Y,E>, F>> for Result<Y,E>
+{
+  fn from(thunk: Thunk<Result<Y,E>, F>) -> Result<Y,E> {
+    Thunk::into_inner(thunk)
+  }
+}
+
 // todo: DerefMut
-- 
2.30.2