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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 Q Public License version 1.0. *)
(* *)
(***********************************************************************)
(* 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
let ident_create_predef_exn = wrap Ident.create_predef_exn
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_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"
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_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
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_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))
let ident_match_failure = ident_create_predef_exn "Match_failure"
and ident_out_of_memory = ident_create_predef_exn "Out_of_memory"
and ident_invalid_argument = ident_create_predef_exn "Invalid_argument"
and ident_failure = ident_create_predef_exn "Failure"
and ident_not_found = ident_create_predef_exn "Not_found"
and ident_sys_error = ident_create_predef_exn "Sys_error"
and ident_end_of_file = ident_create_predef_exn "End_of_file"
and ident_division_by_zero = ident_create_predef_exn "Division_by_zero"
and ident_stack_overflow = ident_create_predef_exn "Stack_overflow"
and ident_sys_blocked_io = ident_create_predef_exn "Sys_blocked_io"
and ident_assert_failure = ident_create_predef_exn "Assert_failure"
and ident_undefined_recursive_module =
ident_create_predef_exn "Undefined_recursive_module"
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;
]
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 decl_abstr =
{type_params = [];
type_arity = 0;
type_kind = Type_abstract;
type_loc = Location.none;
type_private = Asttypes.Public;
type_manifest = None;
type_variance = [];
type_newtype_level = None;
type_attributes = [];
type_immediate = false;
}
let decl_abstr_imm = {decl_abstr with type_immediate = true}
let cstr id args =
{
cd_id = id;
cd_args = Cstr_tuple args;
cd_res = None;
cd_loc = Location.none;
cd_attributes = [];
}
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 common_initial_env add_type add_extension empty_env =
let decl_bool =
{decl_abstr with
type_kind = Type_variant([cstr ident_false []; cstr ident_true []]);
type_immediate = true}
and decl_unit =
{decl_abstr with
type_kind = Type_variant([cstr ident_void []]);
type_immediate = true}
and decl_exn =
{decl_abstr with
type_kind = Type_open}
and decl_array =
let tvar = newgenvar() in
{decl_abstr with
type_params = [tvar];
type_arity = 1;
type_variance = [Variance.full]}
and decl_list =
let tvar = newgenvar() in
{decl_abstr with
type_params = [tvar];
type_arity = 1;
type_kind =
Type_variant([cstr ident_nil []; cstr ident_cons [tvar; type_list tvar]]);
type_variance = [Variance.covariant]}
and decl_option =
let tvar = newgenvar() in
{decl_abstr with
type_params = [tvar];
type_arity = 1;
type_kind = Type_variant([cstr ident_none []; cstr ident_some [tvar]]);
type_variance = [Variance.covariant]}
and decl_lazy_t =
let tvar = newgenvar() in
{decl_abstr with
type_params = [tvar];
type_arity = 1;
type_variance = [Variance.covariant]}
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 = [{Asttypes.txt="ocaml.warn_on_literal_pattern";
loc=Location.none},
Parsetree.PStr[]] }
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_type ident_int64 decl_abstr (
add_type ident_int32 decl_abstr (
add_type ident_nativeint decl_abstr (
add_type ident_lazy_t decl_lazy_t (
add_type ident_option decl_option (
add_type ident_list decl_list (
add_type ident_array decl_array (
add_type ident_exn decl_exn (
add_type ident_unit decl_unit (
add_type ident_bool decl_bool (
add_type ident_float decl_abstr (
add_type ident_string decl_abstr (
add_type ident_char decl_abstr_imm (
add_type ident_int decl_abstr_imm (
add_type ident_extension_constructor decl_abstr (
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 safe_string = add_type ident_bytes decl_abstr common in
let decl_bytes_unsafe = {decl_abstr with type_manifest = Some type_string} in
let unsafe_string = add_type ident_bytes decl_bytes_unsafe common in
(safe_string, unsafe_string)
let builtin_values =
List.map (fun id -> Ident.make_global id; (Ident.name id, id))
[ident_match_failure; ident_out_of_memory; ident_stack_overflow;
ident_invalid_argument;
ident_failure; ident_not_found; ident_sys_error; ident_end_of_file;
ident_division_by_zero; ident_sys_blocked_io;
ident_assert_failure; ident_undefined_recursive_module ]
(* Start non-predef identifiers at 1000. This way, more predefs can
be defined in this file (above!) without breaking .cmi
compatibility. *)
let _ = Ident.set_current_time 999
let builtin_idents = List.rev !builtin_idents
|
