diff options
| author | Gaëtan Gilbert | 2017-10-27 14:03:51 +0200 |
|---|---|---|
| committer | Gaëtan Gilbert | 2019-03-14 13:27:38 +0100 |
| commit | 75508769762372043387c67a9abe94e8f940e80a (patch) | |
| tree | 3f63e7790e9f3b6e7384b0a445d62cfa7edbe829 /kernel/typeops.ml | |
| parent | a0e16c9e5c3f88a8b72935dd4877f13388640f69 (diff) | |
Add a non-cumulative impredicative universe SProp.
Note currently it's impossible to define inductives in SProp because
indtypes.ml and the pretyper aren't fully plugged.
Diffstat (limited to 'kernel/typeops.ml')
| -rw-r--r-- | kernel/typeops.ml | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/kernel/typeops.ml b/kernel/typeops.ml index 6d12ce3020..1232ab654e 100644 --- a/kernel/typeops.ml +++ b/kernel/typeops.ml @@ -69,7 +69,7 @@ let type_of_type u = mkType uu let type_of_sort = function - | Prop | Set -> type1 + | SProp | Prop | Set -> type1 | Type u -> type_of_type u (*s Type of a de Bruijn index. *) @@ -264,6 +264,7 @@ let judge_of_int env i = let sort_of_product env domsort rangsort = match (domsort, rangsort) with + | (_, SProp) | (SProp, _) -> rangsort (* Product rule (s,Prop,Prop) *) | (_, Prop) -> rangsort (* Product rule (Prop/Set,Set,Set) *) @@ -463,7 +464,11 @@ let rec execute env cstr = let open Context.Rel.Declaration in match kind cstr with (* Atomic terms *) - | Sort s -> type_of_sort s + | Sort s -> + (match s with + | SProp -> if not (Environ.sprop_allowed env) then error_disallowed_sprop env + | _ -> ()); + type_of_sort s | Rel n -> type_of_relative env n |