98 lines
3.6 KiB
OCaml
98 lines
3.6 KiB
OCaml
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(* Predefined type constructors (with special typing rules in typecore) *)
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open Path
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open Typedtree
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let ident_int = Ident.new "int"
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and ident_char = Ident.new "char"
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and ident_string = Ident.new "string"
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and ident_float = Ident.new "float"
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and ident_bool = Ident.new "bool"
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and ident_unit = Ident.new "unit"
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and ident_exn = Ident.new "exn"
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and ident_array = Ident.new "array"
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and ident_list = Ident.new "list"
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and ident_format = Ident.new "format"
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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_string = Pident ident_string
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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_format = Pident ident_format
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let type_int = Tconstr(Pident ident_int, [])
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and type_char = Tconstr(Pident ident_char, [])
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and type_string = Tconstr(Pident ident_string, [])
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and type_float = Tconstr(Pident ident_float, [])
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and type_bool = Tconstr(Pident ident_bool, [])
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and type_unit = Tconstr(Pident ident_unit, [])
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and type_exn = Tconstr(Pident ident_exn, [])
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and type_array t = Tconstr(path_array, [t])
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and type_list t = Tconstr(path_list, [t])
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let ident_match_failure = Ident.new "Match_failure"
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and ident_out_of_memory = Ident.new "Out_of_memory"
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and ident_invalid_argument = Ident.new "Invalid_argument"
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and ident_failure = Ident.new "Failure"
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and ident_not_found = Ident.new "Not_found"
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and ident_sys_error = Ident.new "Sys_error"
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and ident_end_of_file = Ident.new "End_of_file"
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and ident_division_by_zero = Ident.new "Division_by_zero"
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let path_match_failure = Pident ident_match_failure
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let build_initial_env add_type add_exception empty_env =
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let newvar() =
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(* Cannot call Ctype.newvar here because ctype imports predef via env *)
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Tvar{tvar_level = -1 (*generic_level*); tvar_link = None} in
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let decl_abstr =
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{type_params = []; type_arity = 0; type_kind = Type_abstract}
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and decl_bool =
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{type_params = []; type_arity = 0;
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type_kind = Type_variant["false",[]; "true",[]]}
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and decl_unit =
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{type_params = []; type_arity = 0; type_kind = Type_variant["()",[]]}
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and decl_exn =
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{type_params = []; type_arity = 0; type_kind = Type_variant[]}
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and decl_array =
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let tvar = newvar() in
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{type_params = [tvar]; type_arity = 1; type_kind = Type_abstract}
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and decl_list =
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let tvar = newvar() in
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{type_params = [tvar]; type_arity = 1;
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type_kind = Type_variant["[]", []; "::", [tvar; type_list tvar]]}
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and decl_format =
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{type_params = [newvar(); newvar(); newvar()]; type_arity = 3;
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type_kind = Type_abstract} in
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add_exception ident_match_failure [type_string; type_int; type_int] (
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add_exception ident_out_of_memory [] (
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add_exception ident_invalid_argument [type_string] (
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add_exception ident_failure [type_string] (
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add_exception ident_not_found [] (
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add_exception ident_sys_error [type_string] (
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add_exception ident_end_of_file [] (
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add_exception ident_division_by_zero [] (
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add_type ident_format decl_format (
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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 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_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]
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