Typetexp (ocaml.Typetexp)

val valid_tyvar_name : string -> bool

type poly_univars

val make_poly_univars : string list -> poly_univars

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

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

val transl_simple_type : 
  Env.t ->
  ?univars:poly_univars ->
  bool ->
  Parsetree.core_type ->
  Typedtree.core_type

val transl_simple_type_univars : 
  Env.t ->
  Parsetree.core_type ->
  Typedtree.core_type

val transl_simple_type_delayed : 
  Env.t ->
  Parsetree.core_type ->
  Typedtree.core_type * Types.type_expr * (unit -> unit)

val transl_type_scheme : Env.t -> Parsetree.core_type -> Typedtree.core_type

val reset_type_variables : unit -> unit

val type_variable : Location.t -> string -> Types.type_expr

val transl_type_param : Env.t -> Parsetree.core_type -> Typedtree.core_type

type variable_context

val narrow : unit -> variable_context

val widen : variable_context -> unit

exception Already_bound

type error =

| Unbound_type_variable of string
| Undefined_type_constructor of Path.t
| Type_arity_mismatch of Longident.t * int * int
| Bound_type_variable of string
| Recursive_type
| Unbound_row_variable of Longident.t
| Type_mismatch of Errortrace.unification_error
| Alias_type_mismatch of Errortrace.unification_error
| Present_has_conjunction of string
| Present_has_no_type of string
| Constructor_mismatch of Types.type_expr * Types.type_expr
| Not_a_variant of Types.type_expr
| Variant_tags of string * string
| Invalid_variable_name of string
| Cannot_quantify of string * Types.type_expr
| Multiple_constraints_on_type of Longident.t
| Method_mismatch of string * Types.type_expr * Types.type_expr
| Opened_object of Path.t option
| Not_an_object of Types.type_expr

exception Error of Location.t * Env.t * error

val report_error : Env.t -> Stdlib.Format.formatter -> error -> unit

val transl_modtype_longident : 
  (Location.t -> Env.t -> Longident.t -> Path.t) ref

val transl_modtype : 
  (Env.t -> Parsetree.module_type -> Typedtree.module_type) ref

val create_package_mty : 
  Location.t ->
  Env.t ->
  Parsetree.package_type ->
  (Longident.t Asttypes.loc * Parsetree.core_type) list * Parsetree.module_type