diff options
Diffstat (limited to 'checker/declarations.ml')
| -rw-r--r-- | checker/declarations.ml | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/checker/declarations.ml b/checker/declarations.ml index 94388f4ac1..71b6c9ca0b 100644 --- a/checker/declarations.ml +++ b/checker/declarations.ml @@ -306,6 +306,48 @@ let join_alias (subst1 : substitution) (subst2 : substitution) = Umap.mapi (apply_subst subst2) subst1 +let update_subst subst1 subst2 = + let subst_inv key (mp,_) l = + let newmp = + match key with + | MBI msid -> MPbound msid + | MSI msid -> MPself msid + | MPI mp -> mp + in + match mp with + | MPbound mbid -> ((MBI mbid),newmp)::l + | MPself msid -> ((MSI msid),newmp)::l + | _ -> ((MPI mp),newmp)::l + in + let subst_mbi = Umap.fold subst_inv subst2 [] in + let alias_subst key (mp,_) sub= + let newsetkey = + match key with + | MPI mp1 -> + let compute_set_newkey l (k,mp') = + let mp_from_key = match k with + | MBI msid -> MPbound msid + | MSI msid -> MPself msid + | MPI mp -> mp + in + let new_mp1 = replace_mp_in_mp mp_from_key mp' mp1 in + if new_mp1 == mp1 then l else (MPI new_mp1)::l + in + begin + match List.fold_left compute_set_newkey [] subst_mbi with + | [] -> None + | l -> Some (l) + end + | _ -> None + in + match newsetkey with + | None -> sub + | Some l -> + List.fold_left (fun s k -> Umap.add k (mp,None) s) + sub l + in + Umap.fold alias_subst subst1 empty_subst + let subst_substituted s r = match !r with |