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|
(**************************************************************************)
(* *)
(* OCaml *)
(* *)
(* Xavier Leroy, projet Cristal, INRIA Rocquencourt *)
(* *)
(* Copyright 1996 Institut National de Recherche en Informatique et *)
(* en Automatique. *)
(* *)
(* All rights reserved. This file is distributed under the terms of *)
(* the GNU Lesser General Public License version 2.1, with the *)
(* special exception on linking described in the file LICENSE. *)
(* *)
(**************************************************************************)
(* Predefined type constructors (with special typing rules in typecore) *)
open Path
open Types
open Btype
let builtin_idents = ref []
let wrap create s =
let id = create s in
builtin_idents := (s, id) :: !builtin_idents;
id
let ident_create = wrap Ident.create_predef
let ident_int = ident_create "int"
and ident_char = ident_create "char"
and ident_bytes = ident_create "bytes"
and ident_float = ident_create "float"
and ident_bool = ident_create "bool"
and ident_unit = ident_create "unit"
and ident_exn = ident_create "exn"
and ident_eff = ident_create "eff"
and ident_continuation = ident_create "continuation"
and ident_array = ident_create "array"
and ident_list = ident_create "list"
and ident_option = ident_create "option"
and ident_nativeint = ident_create "nativeint"
and ident_int32 = ident_create "int32"
and ident_int64 = ident_create "int64"
and ident_lazy_t = ident_create "lazy_t"
and ident_string = ident_create "string"
and ident_extension_constructor = ident_create "extension_constructor"
and ident_floatarray = ident_create "floatarray"
let path_int = Pident ident_int
and path_char = Pident ident_char
and path_bytes = Pident ident_bytes
and path_float = Pident ident_float
and path_bool = Pident ident_bool
and path_unit = Pident ident_unit
and path_exn = Pident ident_exn
and path_eff = Pident ident_eff
and path_continuation = Pident ident_continuation
and path_array = Pident ident_array
and path_list = Pident ident_list
and path_option = Pident ident_option
and path_nativeint = Pident ident_nativeint
and path_int32 = Pident ident_int32
and path_int64 = Pident ident_int64
and path_lazy_t = Pident ident_lazy_t
and path_string = Pident ident_string
and path_extension_constructor = Pident ident_extension_constructor
and path_floatarray = Pident ident_floatarray
let type_int = newgenty (Tconstr(path_int, [], ref Mnil))
and type_char = newgenty (Tconstr(path_char, [], ref Mnil))
and type_bytes = newgenty (Tconstr(path_bytes, [], ref Mnil))
and type_float = newgenty (Tconstr(path_float, [], ref Mnil))
and type_bool = newgenty (Tconstr(path_bool, [], ref Mnil))
and type_unit = newgenty (Tconstr(path_unit, [], ref Mnil))
and type_exn = newgenty (Tconstr(path_exn, [], ref Mnil))
and type_eff t = newgenty (Tconstr(path_eff, [t], ref Mnil))
and type_continuation t1 t2 =
newgenty (Tconstr(path_continuation, [t1; t2], ref Mnil))
and type_array t = newgenty (Tconstr(path_array, [t], ref Mnil))
and type_list t = newgenty (Tconstr(path_list, [t], ref Mnil))
and type_option t = newgenty (Tconstr(path_option, [t], ref Mnil))
and type_nativeint = newgenty (Tconstr(path_nativeint, [], ref Mnil))
and type_int32 = newgenty (Tconstr(path_int32, [], ref Mnil))
and type_int64 = newgenty (Tconstr(path_int64, [], ref Mnil))
and type_lazy_t t = newgenty (Tconstr(path_lazy_t, [t], ref Mnil))
and type_string = newgenty (Tconstr(path_string, [], ref Mnil))
and type_extension_constructor =
newgenty (Tconstr(path_extension_constructor, [], ref Mnil))
and type_floatarray = newgenty (Tconstr(path_floatarray, [], ref Mnil))
let ident_match_failure = ident_create "Match_failure"
and ident_out_of_memory = ident_create "Out_of_memory"
and ident_invalid_argument = ident_create "Invalid_argument"
and ident_failure = ident_create "Failure"
and ident_not_found = ident_create "Not_found"
and ident_sys_error = ident_create "Sys_error"
and ident_end_of_file = ident_create "End_of_file"
and ident_division_by_zero = ident_create "Division_by_zero"
and ident_stack_overflow = ident_create "Stack_overflow"
and ident_sys_blocked_io = ident_create "Sys_blocked_io"
and ident_assert_failure = ident_create "Assert_failure"
and ident_undefined_recursive_module =
ident_create "Undefined_recursive_module"
and ident_unhandled = ident_create "Unhandled"
and ident_continuation_already_taken = ident_create "Continuation_already_taken"
let all_predef_exns = [
ident_match_failure;
ident_out_of_memory;
ident_invalid_argument;
ident_failure;
ident_not_found;
ident_sys_error;
ident_end_of_file;
ident_division_by_zero;
ident_stack_overflow;
ident_sys_blocked_io;
ident_assert_failure;
ident_undefined_recursive_module;
ident_unhandled;
ident_continuation_already_taken;
]
let path_match_failure = Pident ident_match_failure
and path_assert_failure = Pident ident_assert_failure
and path_undefined_recursive_module = Pident ident_undefined_recursive_module
let cstr id args =
{
cd_id = id;
cd_args = Cstr_tuple args;
cd_res = None;
cd_loc = Location.none;
cd_attributes = [];
cd_uid = Uid.of_predef_id id;
}
let ident_false = ident_create "false"
and ident_true = ident_create "true"
and ident_void = ident_create "()"
and ident_nil = ident_create "[]"
and ident_cons = ident_create "::"
and ident_none = ident_create "None"
and ident_some = ident_create "Some"
let mk_add_type add_type type_ident
?manifest ?(immediate=Type_immediacy.Unknown) ?(kind=Type_abstract) env =
let decl =
{type_params = [];
type_arity = 0;
type_kind = kind;
type_loc = Location.none;
type_private = Asttypes.Public;
type_manifest = manifest;
type_variance = [];
type_separability = [];
type_is_newtype = false;
type_expansion_scope = lowest_level;
type_attributes = [];
type_immediate = immediate;
type_unboxed = unboxed_false_default_false;
type_uid = Uid.of_predef_id type_ident;
}
in
add_type type_ident decl env
let common_initial_env add_type add_extension empty_env =
let add_type = mk_add_type add_type
and add_type1 type_ident
~variance ~separability ?(kind=fun _ -> Type_abstract) env =
let param = newgenvar () in
let decl =
{type_params = [param];
type_arity = 1;
type_kind = kind param;
type_loc = Location.none;
type_private = Asttypes.Public;
type_manifest = None;
type_variance = [variance];
type_separability = [separability];
type_is_newtype = false;
type_expansion_scope = lowest_level;
type_attributes = [];
type_immediate = Unknown;
type_unboxed = unboxed_false_default_false;
type_uid = Uid.of_predef_id type_ident;
}
in
add_type type_ident decl env
and add_continuation type_ident env =
let tvar1 = newgenvar() in
let tvar2 = newgenvar() in
let arity = 2 in
let decl =
{type_params = [tvar1; tvar2];
type_arity = arity;
type_kind = Type_abstract;
type_loc = Location.none;
type_private = Asttypes.Public;
type_manifest = None;
type_variance = [Variance.contravariant; Variance.covariant];
type_separability = Types.Separability.default_signature ~arity;
type_is_newtype = false;
type_expansion_scope = lowest_level;
type_attributes = [];
type_immediate = Unknown;
type_unboxed = unboxed_false_default_false;
type_uid = Uid.of_predef_id type_ident;
}
in
add_type type_ident decl env
in
let add_extension id l =
add_extension id
{ ext_type_path = path_exn;
ext_type_params = [];
ext_args = Cstr_tuple l;
ext_ret_type = None;
ext_private = Asttypes.Public;
ext_loc = Location.none;
ext_attributes = [Ast_helper.Attr.mk
(Location.mknoloc "ocaml.warn_on_literal_pattern")
(Parsetree.PStr [])];
ext_uid = Uid.of_predef_id id;
}
in
add_extension ident_match_failure
[newgenty (Ttuple[type_string; type_int; type_int])] (
add_extension ident_out_of_memory [] (
add_extension ident_stack_overflow [] (
add_extension ident_invalid_argument [type_string] (
add_extension ident_failure [type_string] (
add_extension ident_not_found [] (
add_extension ident_sys_blocked_io [] (
add_extension ident_sys_error [type_string] (
add_extension ident_end_of_file [] (
add_extension ident_division_by_zero [] (
add_extension ident_assert_failure
[newgenty (Ttuple[type_string; type_int; type_int])] (
add_extension ident_undefined_recursive_module
[newgenty (Ttuple[type_string; type_int; type_int])] (
add_extension ident_unhandled [] (
add_extension ident_continuation_already_taken [] (
add_type ident_int64 (
add_type ident_int32 (
add_type ident_nativeint (
add_type1 ident_lazy_t ~variance:Variance.covariant
~separability:Separability.Ind (
add_type1 ident_option ~variance:Variance.covariant
~separability:Separability.Ind
~kind:(fun tvar ->
Type_variant([cstr ident_none []; cstr ident_some [tvar]])
) (
add_type1 ident_list ~variance:Variance.covariant
~separability:Separability.Ind
~kind:(fun tvar ->
Type_variant([cstr ident_nil []; cstr ident_cons [tvar; type_list tvar]])
) (
add_type1 ident_array ~variance:Variance.full ~separability:Separability.Ind (
add_type ident_exn ~kind:Type_open (
add_type1 ident_eff ~variance:Variance.full ~separability:Separability.Ind ~kind:(fun _ -> Type_open) (
add_continuation ident_continuation (
add_type ident_unit ~immediate:Always
~kind:(Type_variant([cstr ident_void []])) (
add_type ident_bool ~immediate:Always
~kind:(Type_variant([cstr ident_false []; cstr ident_true []])) (
add_type ident_float (
add_type ident_string (
add_type ident_char ~immediate:Always (
add_type ident_int ~immediate:Always (
add_type ident_extension_constructor (
add_type ident_floatarray (
empty_env))))))))))))))))))))))))))))))))
let build_initial_env add_type add_exception empty_env =
let common = common_initial_env add_type add_exception empty_env in
let add_type = mk_add_type add_type in
let safe_string = add_type ident_bytes common in
let unsafe_string = add_type ident_bytes ~manifest:type_string common in
(safe_string, unsafe_string)
let builtin_values =
List.map (fun id -> (Ident.name id, id)) all_predef_exns
let builtin_idents = List.rev !builtin_idents
|
