55 lines
2.2 KiB
OCaml
55 lines
2.2 KiB
OCaml
(***********************************************************************)
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(* *)
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(* Objective Caml *)
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(* *)
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(* Xavier Leroy, projet Cristal, INRIA Rocquencourt *)
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(* *)
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(* Copyright 1996 Institut National de Recherche en Informatique et *)
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(* en Automatique. All rights reserved. This file is distributed *)
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(* under the terms of the Q Public License version 1.0. *)
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(* *)
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(***********************************************************************)
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(* $Id$ *)
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(* Typechecking of type expressions for the core language *)
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open Format;;
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val transl_simple_type:
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Env.t -> bool -> Parsetree.core_type -> Types.type_expr
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val transl_simple_type_delayed:
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Env.t -> Parsetree.core_type -> Types.type_expr * (unit -> unit)
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(* Translate a type, but leave type variables unbound. Returns
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the type and a function that binds the type variable. *)
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val transl_type_scheme:
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Env.t -> Parsetree.core_type -> Types.type_expr
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val reset_type_variables: unit -> unit
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val enter_type_variable: bool -> string -> Types.type_expr
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val type_variable : Location.t -> string -> Types.type_expr
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val narrow: unit -> unit
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val widen: unit -> unit
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exception Already_bound
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type error =
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Unbound_type_variable of string
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| Unbound_type_constructor of Longident.t
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| Unbound_type_constructor_2 of Path.t
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| Type_arity_mismatch of Longident.t * int * int
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| Bound_type_variable of string
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| Recursive_type
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| Unbound_class of Longident.t
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| Unbound_row_variable of Longident.t
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| Type_mismatch of (Types.type_expr * Types.type_expr) list
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| Alias_type_mismatch of (Types.type_expr * Types.type_expr) list
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| Present_has_conjunction of string
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| Present_has_no_type of string
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| Constructor_mismatch of Types.type_expr * Types.type_expr
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| Not_a_variant of Types.type_expr
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| Variant_tags of string * string
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exception Error of Location.t * error
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val report_error: formatter -> error -> unit
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