diff options
| -rw-r--r-- | library/lib.ml | 18 |
1 files changed, 10 insertions, 8 deletions
diff --git a/library/lib.ml b/library/lib.ml index 356f90b227..9dbf7ddc01 100644 --- a/library/lib.ml +++ b/library/lib.ml @@ -463,14 +463,16 @@ let add_section_variable id impl keep = | (vars,repl,abs)::sl -> sectab := ((id,impl,keep)::vars,repl,abs)::sl -let rec extract_hyps = function - | ((id,impl,keep)::idl,(id',b,t)::hyps) when id=id' -> (id',impl,b,t) :: extract_hyps (idl,hyps) - | ((id,impl,Some (ty,keep))::idl,hyps) -> - if List.exists (fun (id,_,_) -> List.mem id keep) hyps then - (id,impl,None,ty) :: extract_hyps (idl,hyps) - else extract_hyps (idl,hyps) - | (id::idl,hyps) -> extract_hyps (idl,hyps) - | [], _ -> [] +let extract_hyps (secs,ohyps) = + let rec aux = function + | ((id,impl,keep)::idl,(id',b,t)::hyps) when id=id' -> (id',impl,b,t) :: aux (idl,hyps) + | ((id,impl,Some (ty,keep))::idl,hyps) -> + if List.exists (fun (id,_,_) -> List.mem id keep) ohyps then + (id,impl,None,ty) :: aux (idl,hyps) + else aux (idl,hyps) + | (id::idl,hyps) -> aux (idl,hyps) + | [], _ -> [] + in aux (secs,ohyps) let instance_from_variable_context sign = let rec inst_rec = function |