val repeat : string -> int -> string
val expand : int -> string -> string

(* Logging functions, they print to stderr and consider the verbosity flag *)
val hline    : string
val prt_line : string -> unit
val prt_node : Types.node -> unit
val log_line : int -> string -> unit
val log_plain_line : int -> string -> unit
val log_node : int -> Types.node -> unit

(* Generate a fresh variable from a given prefix, e.g. "foo" -> "foo$1"  *)
val fresh_var : string -> string

(* Generate a fresg constant from a given prefix, e.g. "foo" -> "foo$$1"  *)
val fresh_const : string -> string

(* Generate an Types.location tuple from Lexing data structures *)
val loc_from_lexpos : Lexing.position -> Lexing.position -> Types.location

(* Default transformation traversal for AST nodes *)
val transform_children : (Types.node -> Types.node) -> Types.node -> Types.node

(* Add a single annotation to a node (no traversal) *)
val annotate : Types.annotation -> Types.node -> Types.node

(*val visit_children : (Types.node -> unit) -> Types.node -> unit*)

(* Extract annotation from node *)
val annof   : Types.node -> Types.annotation list
val locof   : Types.node -> Types.location
val depthof : Types.node -> int
val indexof : Types.node -> int
val typeof  : Types.node -> Types.ctype
val labelof : Types.node -> string

val const_type : Types.const -> Types.ctype

(* Print file location to stderr *)
val prerr_loc : Types.location -> unit

(* Print file location to stderr *)
val prerr_loc_msg : Types.location -> string -> unit

(* Flatten Block nodes into the given array of nodes *)
val flatten_blocks : Types.node list -> Types.node list

(* Extract the node list from a Block node *)
val block_body : Types.node -> Types.node list

(* Get the basic type of a declaration, removing array dimensions *)
val basetypeof : Types.node -> Types.ctype

(* Get name from variable or function declaration *)
val nameof : Types.node -> string

val optmap : ('a -> 'b) -> 'a list option -> 'b list option
val optmapl : ('a -> 'b) -> 'a list option -> 'b list

(* List.mapi clone (only available in OCaml version >= 4.00 *)
val mapi : (int -> 'a -> 'b) -> 'a list -> 'b list

val is_immediate_const : Types.const -> bool

val is_array : Types.node -> bool

val node_warning : Types.node -> string -> unit