Module Typecore

type type_forcing_context =
| If_conditional
| If_no_else_branch
| While_loop_conditional
| While_loop_body
| For_loop_start_index
| For_loop_stop_index
| For_loop_body
| Assert_condition
| Sequence_left_hand_side
| When_guard
type type_expected = private {
ty : Types.type_expr;
explanation : type_forcing_context option;
}
val mk_expected : ?⁠explanation:type_forcing_context -> Types.type_expr -> type_expected
val is_nonexpansive : Typedtree.expression -> bool
type existential_restriction =
| At_toplevel

no existential types at the toplevel

| In_group

nor with let ... and ...

| In_rec

or recursive definition

| With_attributes

or let[@any_attribute] = ...

| In_class_args

or in class arguments class c (...) = ...

| In_class_def

or in class c = let ... in ...

| In_self_pattern

or in self pattern

val type_binding : Env.t -> Asttypes.rec_flag -> Parsetree.value_binding list -> Annot.ident option -> Typedtree.value_binding list * Env.t
val type_let : existential_restriction -> Env.t -> Asttypes.rec_flag -> Parsetree.value_binding list -> Annot.ident option -> Typedtree.value_binding list * Env.t
val type_expression : Env.t -> Parsetree.expression -> Typedtree.expression
val type_class_arg_pattern : string -> Env.t -> Env.t -> Asttypes.arg_label -> Parsetree.pattern -> Typedtree.pattern * (Ident.t * Ident.t * Types.type_expr) list * Env.t * Env.t
val type_self_pattern : string -> Types.type_expr -> Env.t -> Env.t -> Env.t -> Parsetree.pattern -> Typedtree.pattern * (Ident.t * Types.type_expr) Types.Meths.t Stdlib.ref * (Ident.t * Asttypes.mutable_flag * Asttypes.virtual_flag * Types.type_expr) Types.Vars.t Stdlib.ref * Env.t * Env.t * Env.t
val check_partial : ?⁠lev:int -> Env.t -> Types.type_expr -> Location.t -> Typedtree.case list -> Typedtree.partial
val type_expect : ?⁠in_function:(Location.t * Types.type_expr) -> Env.t -> Parsetree.expression -> type_expected -> Typedtree.expression
val type_exp : Env.t -> Parsetree.expression -> Typedtree.expression
val type_approx : Env.t -> Parsetree.expression -> Types.type_expr
val type_argument : Env.t -> Parsetree.expression -> Types.type_expr -> Types.type_expr -> Typedtree.expression
val option_some : Env.t -> Typedtree.expression -> Typedtree.expression
val option_none : Env.t -> Types.type_expr -> Location.t -> Typedtree.expression
val extract_option_type : Env.t -> Types.type_expr -> Types.type_expr
val generalizable : int -> Types.type_expr -> bool
val reset_delayed_checks : unit -> unit
val force_delayed_checks : unit -> unit
val name_pattern : string -> Typedtree.pattern list -> Ident.t
val name_cases : string -> Typedtree.case list -> Ident.t
val self_coercion : (Path.t * Location.t list Stdlib.ref) list Stdlib.ref
type error =
| Constructor_arity_mismatch of Longident.t * int * int
| Label_mismatch of Longident.t * Ctype.Unification_trace.t
| Pattern_type_clash of Ctype.Unification_trace.t * Typedtree.pattern_desc option
| Or_pattern_type_clash of Ident.t * Ctype.Unification_trace.t
| Multiply_bound_variable of string
| Orpat_vars of Ident.t * Ident.t list
| Expr_type_clash of Ctype.Unification_trace.t * type_forcing_context option * Typedtree.expression_desc option
| Apply_non_function of Types.type_expr
| Apply_wrong_label of Asttypes.arg_label * Types.type_expr
| Label_multiply_defined of string
| Label_missing of Ident.t list
| Label_not_mutable of Longident.t
| Wrong_name of string * type_expected * string * Path.t * string * string list
| Name_type_mismatch of string * Longident.t * Path.t * Path.t * (Path.t * Path.t) list
| Invalid_format of string
| Undefined_method of Types.type_expr * string * string list option
| Undefined_inherited_method of string * string list
| Virtual_class of Longident.t
| Private_type of Types.type_expr
| Private_label of Longident.t * Types.type_expr
| Private_constructor of Types.constructor_description * Types.type_expr
| Unbound_instance_variable of string * string list
| Instance_variable_not_mutable of string
| Not_subtype of Ctype.Unification_trace.t * Ctype.Unification_trace.t
| Outside_class
| Value_multiply_overridden of string
| Coercion_failure of Types.type_expr * Types.type_expr * Ctype.Unification_trace.t * bool
| Too_many_arguments of bool * Types.type_expr * type_forcing_context option
| Abstract_wrong_label of Asttypes.arg_label * Types.type_expr * type_forcing_context option
| Scoping_let_module of string * Types.type_expr
| Not_a_variant_type of Longident.t
| Incoherent_label_order
| Less_general of string * Ctype.Unification_trace.t
| Modules_not_allowed
| Cannot_infer_signature
| Not_a_packed_module of Types.type_expr
| Unexpected_existential of existential_restriction * string * string list
| Invalid_interval
| Invalid_for_loop_index
| No_value_clauses
| Exception_pattern_disallowed
| Mixed_value_and_exception_patterns_under_guard
| Inlined_record_escape
| Inlined_record_expected
| Unrefuted_pattern of Typedtree.pattern
| Invalid_extension_constructor_payload
| Not_an_extension_constructor
| Literal_overflow of string
| Unknown_literal of string * char
| Illegal_letrec_pat
| Illegal_letrec_expr
| Illegal_class_expr
| Empty_pattern
| Letop_type_clash of string * Ctype.Unification_trace.t
| Andop_type_clash of string * Ctype.Unification_trace.t
| Bindings_type_clash of Ctype.Unification_trace.t
exception Error of Location.t * Env.t * error
exception Error_forward of Location.error
val report_error : loc:Location.t -> Env.t -> error -> Location.error
deprecated

. Use Location.error_of_exn, Location.print_report.

val type_module : (Env.t -> Parsetree.module_expr -> Typedtree.module_expr) Stdlib.ref
val type_open : (?⁠used_slot:bool Stdlib.ref -> Asttypes.override_flag -> Env.t -> Location.t -> Longident.t Asttypes.loc -> Path.t * Env.t) Stdlib.ref
val type_open_decl : (?⁠used_slot:bool Stdlib.ref -> Env.t -> Parsetree.open_declaration -> Typedtree.open_declaration * Types.signature * Env.t) Stdlib.ref
val type_object : (Env.t -> Location.t -> Parsetree.class_structure -> Typedtree.class_structure * Types.class_signature * string list) Stdlib.ref
val type_package : (Env.t -> Parsetree.module_expr -> Path.t -> Longident.t list -> Typedtree.module_expr * Types.type_expr list) Stdlib.ref
val create_package_type : Location.t -> Env.t -> (Longident.t * (Longident.t * Parsetree.core_type) list) -> Path.t * (Longident.t * Typedtree.core_type) list * Types.type_expr
val constant : Parsetree.constant -> (Asttypes.constanterror) Stdlib.result
val check_recursive_bindings : Env.t -> Typedtree.value_binding list -> unit
val check_recursive_class_bindings : Env.t -> Ident.t list -> Typedtree.class_expr list -> unit