Module Typeopt

val is_function_type : Env.t -> Types.type_expr -> (Types.type_expr * Types.type_expr) option
val is_base_type : Env.t -> Types.type_expr -> Path.t -> bool
val maybe_pointer_type : Env.t -> Types.type_expr -> Lambda.immediate_or_pointer
val maybe_pointer : Typedtree.expression -> Lambda.immediate_or_pointer
val array_type_kind : Env.t -> Types.type_expr -> Lambda.array_kind
val array_kind : Typedtree.expression -> Lambda.array_kind
val array_pattern_kind : Typedtree.pattern -> Lambda.array_kind
val bigarray_type_kind_and_layout : Env.t -> Types.type_expr -> Lambda.bigarray_kind * Lambda.bigarray_layout
val value_kind : Env.t -> Types.type_expr -> Lambda.value_kind
val function_return_value_kind : Env.t -> Types.type_expr -> Lambda.value_kind
val classify_lazy_argument : Typedtree.expression -> [ `Constant_or_function | `Float_that_cannot_be_shortcut | `Identifier of [ `Forward_value | `Other ] | `Other ]

value_kind_union k1 k2 is a value_kind at least as general as k1 and k2