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| author |  Adam Chlipala <adam@chlipala.net> | 2018-08-29 21:44:02 -0400 |
|---|---|---|
| committer | Adam Chlipala <adam@chlipala.net> | 2018-08-29 21:44:02 -0400 |
| commit | 1f11b7ba4e2fdf116aaf0f4d8ca7cde55daa410c (patch) | |
| tree | f4aa05ffdec8d728d816e7b7ca0447f0efb4f7d9 | |
| parent | 7eec6f5c0d702323bd735e2184ff74f27ad37d17 (diff) | |
Detect lambda abstractions over type classes as deserving of implicit-argument status
| -rw-r--r-- | src/elab_env.sml | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/src/elab_env.sml b/src/elab_env.sml index 0474bf7c..a2097aa9 100644 --- a/src/elab_env.sml +++ b/src/elab_env.sml @@ -493,10 +493,11 @@ fun class_name_in (c, _) = case c of CNamed n => SOME (ClNamed n) | CModProj x => SOME (ClProj x) + | CAbs (_, _, c') => class_head_in c' | CUnif (_, _, _, _, ref (Known c)) => class_name_in c | _ => NONE -fun isClass (env : env) c = +and isClass (env : env) c = let fun find NONE = false | find (SOME c) = Option.isSome (CM.find (#classes env, c)) @@ -504,7 +505,7 @@ fun isClass (env : env) c = find (class_name_in c) end -fun class_head_in c = +and class_head_in c = case #1 c of CApp (f, _) => class_head_in f | CUnif (_, _, _, _, ref (Known c)) => class_head_in c |