Module `Typetexp.TyVarEnv`

val reset : unit -> unit

removes all type variables from scope

val with_local_scope : (unit -> 'a) -> 'a

Evaluate in a narrowed type-variable scope

type poly_univars

val make_poly_univars : 
  (string Location.loc * Env.stage) list ->
  Typetexp.TyVarEnv.poly_univars

A variant of make_poly_univars_jkinds that gets variables without jkind annotations

val make_poly_univars_jkinds : 
  context:(string -> Jkind.History.annotation_context_lr) ->
  (string Location.loc * Parsetree.jkind_annotation option * Env.stage) list ->
  Typetexp.TyVarEnv.poly_univars

remember that a list of strings connotes univars; this must always be paired with a check_poly_univars.

val check_poly_univars : 
  Env.t ->
  Location.t ->
  Typetexp.TyVarEnv.poly_univars ->
  Types.type_expr list

Verify that the given univars are universally quantified, and return the list of variables. The type in which the univars are used must be generalised

val instance_poly_univars : 
  Env.t ->
  Location.t ->
  Typetexp.TyVarEnv.poly_univars ->
  Types.type_expr list

Same as check_poly_univars, but instantiates the resulting type scheme (i.e. variables become Tvar rather than Tunivar)

Module Typetexp.TyVarEnv

Module `Typetexp.TyVarEnv`