224 lines
8.4 KiB
OCaml
224 lines
8.4 KiB
OCaml
(***********************************************************************)
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(* *)
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(* OCaml *)
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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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(* Predefined type constructors (with special typing rules in typecore) *)
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open Path
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open Types
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open Btype
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let builtin_idents = ref []
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let wrap create s =
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let id = create s in
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builtin_idents := (s, id) :: !builtin_idents;
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id
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let ident_create = wrap Ident.create
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let ident_create_predef_exn = wrap Ident.create_predef_exn
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let ident_int = ident_create "int"
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and ident_char = ident_create "char"
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and ident_bytes = ident_create "bytes"
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and ident_float = ident_create "float"
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and ident_bool = ident_create "bool"
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and ident_unit = ident_create "unit"
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and ident_exn = ident_create "exn"
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and ident_array = ident_create "array"
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and ident_list = ident_create "list"
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and ident_option = ident_create "option"
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and ident_nativeint = ident_create "nativeint"
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and ident_int32 = ident_create "int32"
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and ident_int64 = ident_create "int64"
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and ident_lazy_t = ident_create "lazy_t"
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and ident_string = ident_create "string"
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let path_int = Pident ident_int
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and path_char = Pident ident_char
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and path_bytes = Pident ident_bytes
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and path_float = Pident ident_float
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and path_bool = Pident ident_bool
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and path_unit = Pident ident_unit
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and path_exn = Pident ident_exn
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and path_array = Pident ident_array
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and path_list = Pident ident_list
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and path_option = Pident ident_option
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and path_nativeint = Pident ident_nativeint
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and path_int32 = Pident ident_int32
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and path_int64 = Pident ident_int64
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and path_lazy_t = Pident ident_lazy_t
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and path_string = Pident ident_string
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let type_int = newgenty (Tconstr(path_int, [], ref Mnil))
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and type_char = newgenty (Tconstr(path_char, [], ref Mnil))
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and type_bytes = newgenty (Tconstr(path_bytes, [], ref Mnil))
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and type_float = newgenty (Tconstr(path_float, [], ref Mnil))
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and type_bool = newgenty (Tconstr(path_bool, [], ref Mnil))
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and type_unit = newgenty (Tconstr(path_unit, [], ref Mnil))
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and type_exn = newgenty (Tconstr(path_exn, [], ref Mnil))
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and type_array t = newgenty (Tconstr(path_array, [t], ref Mnil))
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and type_list t = newgenty (Tconstr(path_list, [t], ref Mnil))
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and type_option t = newgenty (Tconstr(path_option, [t], ref Mnil))
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and type_nativeint = newgenty (Tconstr(path_nativeint, [], ref Mnil))
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and type_int32 = newgenty (Tconstr(path_int32, [], ref Mnil))
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and type_int64 = newgenty (Tconstr(path_int64, [], ref Mnil))
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and type_lazy_t t = newgenty (Tconstr(path_lazy_t, [t], ref Mnil))
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and type_string = newgenty (Tconstr(path_string, [], ref Mnil))
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let ident_match_failure = ident_create_predef_exn "Match_failure"
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and ident_out_of_memory = ident_create_predef_exn "Out_of_memory"
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and ident_invalid_argument = ident_create_predef_exn "Invalid_argument"
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and ident_failure = ident_create_predef_exn "Failure"
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and ident_not_found = ident_create_predef_exn "Not_found"
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and ident_sys_error = ident_create_predef_exn "Sys_error"
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and ident_end_of_file = ident_create_predef_exn "End_of_file"
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and ident_division_by_zero = ident_create_predef_exn "Division_by_zero"
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and ident_stack_overflow = ident_create_predef_exn "Stack_overflow"
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and ident_sys_blocked_io = ident_create_predef_exn "Sys_blocked_io"
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and ident_assert_failure = ident_create_predef_exn "Assert_failure"
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and ident_undefined_recursive_module =
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ident_create_predef_exn "Undefined_recursive_module"
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let path_match_failure = Pident ident_match_failure
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and path_assert_failure = Pident ident_assert_failure
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and path_undefined_recursive_module = Pident ident_undefined_recursive_module
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let decl_abstr =
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{type_params = [];
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type_arity = 0;
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type_kind = Type_abstract;
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type_loc = Location.none;
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type_private = Asttypes.Public;
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type_manifest = None;
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type_variance = [];
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type_newtype_level = None;
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type_attributes = [];
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}
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let cstr id args =
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{
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cd_id = id;
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cd_args = Cstr_tuple args;
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cd_res = None;
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cd_loc = Location.none;
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cd_attributes = [];
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}
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let ident_false = ident_create "false"
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and ident_true = ident_create "true"
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and ident_void = ident_create "()"
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and ident_nil = ident_create "[]"
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and ident_cons = ident_create "::"
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and ident_none = ident_create "None"
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and ident_some = ident_create "Some"
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let common_initial_env add_type add_extension empty_env =
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let decl_bool =
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{decl_abstr with
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type_kind = Type_variant([cstr ident_false []; cstr ident_true []])}
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and decl_unit =
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{decl_abstr with
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type_kind = Type_variant([cstr ident_void []])}
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and decl_exn =
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{decl_abstr with
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type_kind = Type_open}
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and decl_array =
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let tvar = newgenvar() in
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{decl_abstr with
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type_params = [tvar];
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type_arity = 1;
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type_variance = [Variance.full]}
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and decl_list =
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let tvar = newgenvar() in
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{decl_abstr with
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type_params = [tvar];
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type_arity = 1;
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type_kind =
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Type_variant([cstr ident_nil []; cstr ident_cons [tvar; type_list tvar]]);
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type_variance = [Variance.covariant]}
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and decl_option =
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let tvar = newgenvar() in
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{decl_abstr with
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type_params = [tvar];
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type_arity = 1;
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type_kind = Type_variant([cstr ident_none []; cstr ident_some [tvar]]);
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type_variance = [Variance.covariant]}
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and decl_lazy_t =
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let tvar = newgenvar() in
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{decl_abstr with
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type_params = [tvar];
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type_arity = 1;
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type_variance = [Variance.covariant]}
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in
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let add_extension id l =
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add_extension id
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{ ext_type_path = path_exn;
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ext_type_params = [];
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ext_args = Cstr_tuple l;
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ext_ret_type = None;
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ext_private = Asttypes.Public;
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ext_loc = Location.none;
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ext_attributes = [] }
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in
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add_extension ident_match_failure
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[newgenty (Ttuple[type_string; type_int; type_int])] (
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add_extension ident_out_of_memory [] (
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add_extension ident_stack_overflow [] (
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add_extension ident_invalid_argument [type_string] (
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add_extension ident_failure [type_string] (
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add_extension ident_not_found [] (
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add_extension ident_sys_blocked_io [] (
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add_extension ident_sys_error [type_string] (
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add_extension ident_end_of_file [] (
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add_extension ident_division_by_zero [] (
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add_extension ident_assert_failure
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[newgenty (Ttuple[type_string; type_int; type_int])] (
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add_extension ident_undefined_recursive_module
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[newgenty (Ttuple[type_string; type_int; type_int])] (
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add_type ident_int64 decl_abstr (
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add_type ident_int32 decl_abstr (
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add_type ident_nativeint decl_abstr (
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add_type ident_lazy_t decl_lazy_t (
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add_type ident_option decl_option (
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add_type ident_list decl_list (
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add_type ident_array decl_array (
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add_type ident_exn decl_exn (
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add_type ident_unit decl_unit (
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add_type ident_bool decl_bool (
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add_type ident_float decl_abstr (
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add_type ident_string decl_abstr (
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add_type ident_char decl_abstr (
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add_type ident_int decl_abstr (
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empty_env))))))))))))))))))))))))))
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let build_initial_env add_type add_exception empty_env =
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let common = common_initial_env add_type add_exception empty_env in
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let safe_string = add_type ident_bytes decl_abstr common in
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let decl_bytes_unsafe = {decl_abstr with type_manifest = Some type_string} in
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let unsafe_string = add_type ident_bytes decl_bytes_unsafe common in
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(safe_string, unsafe_string)
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let builtin_values =
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List.map (fun id -> Ident.make_global id; (Ident.name id, id))
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[ident_match_failure; ident_out_of_memory; ident_stack_overflow;
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ident_invalid_argument;
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ident_failure; ident_not_found; ident_sys_error; ident_end_of_file;
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ident_division_by_zero; ident_sys_blocked_io;
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ident_assert_failure; ident_undefined_recursive_module ]
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(* Start non-predef identifiers at 1000. This way, more predefs can
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be defined in this file (above!) without breaking .cmi
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compatibility. *)
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let _ = Ident.set_current_time 999
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let builtin_idents = List.rev !builtin_idents
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