Replacing "cast surgery" in LetIn by a proper field (see PR #404).

This is a patch fulfilling the relevant remark of Maxime that an
explicit information at the ML type level would be better than "cast
surgery" to carry the optional type of a let-in.

There are a very few semantic changes.
- a "(x:t:=c)" in a block of binders is now written in the more
  standard way "(x:=c:t)"
- in notations, the type of a let-in is not displayed if not
  explicitly asked so.

See discussion at PR #417 for more information.

1 files changed, 3 insertions, 3 deletions

diff --git a/vernac/command.ml b/vernac/command.ml
index cdc1c88e63..8244ee5346 100644
--- a/vernac/command.ml
+++ b/vernac/command.ml
@@ -55,7 +55,7 @@ let rec under_binders env sigma f n c =
 
 let rec complete_conclusion a cs = function
   | CProdN (loc,bl,c) -> CProdN (loc,bl,complete_conclusion a cs c)
-  | CLetIn (loc,b,t,c) -> CLetIn (loc,b,t,complete_conclusion a cs c)
+  | CLetIn (loc,na,b,t,c) -> CLetIn (loc,na,b,t,complete_conclusion a cs c)
   | CHole (loc, k, _, _) ->
       let (has_no_args,name,params) = a in
       if not has_no_args then
@@ -416,7 +416,7 @@ let rec check_anonymous_type ind =
     match ind with
     | GSort (_, GType []) -> true
     | GProd (_, _, _, _, e) 
-    | GLetIn (_, _, _, e)
+    | GLetIn (_, _, _, _, e)
     | GLambda (_, _, _, _, e)
     | GApp (_, e, _)
     | GCast (_, e, _) -> check_anonymous_type e
@@ -560,7 +560,7 @@ let check_named (loc, na) = match na with
 
 
 let check_param = function
-| CLocalDef (na, _) -> check_named na
+| CLocalDef (na, _, _) -> check_named na
 | CLocalAssum (nas, Default _, _) -> List.iter check_named nas
 | CLocalAssum (nas, Generalized _, _) -> ()
 | CLocalPattern _ -> assert false