tileInventory.mli

(** Module representing the tile inventory for players. *)

(** [t] is the type of a tile inventory. *)
type t

(** [tile] is the type of a tile. *)
type tile = Letter of char | Blank

(** [next_tile t] is the next tile to be drawn from the tile inventory, 
    followed by a tile inventory with the tile [tile] removed. *)
val next_tile : t -> tile option * t

(** [tiles_left t] is the number of tiles left a player has in his
    or her tile inventory. *)
val tiles_left : t -> int

(** [draw i t] is a list of [i] tiles drawn from [t] and a new [TileInventory.t]
    with those tiles rremoved. *)
val draw : int -> t -> tile list * t

(** [from_file f] is the list of possible tiles read from the file [f]. *)
val from_file : string -> t

(** [string_of_tile t] is the string representing the either the letter 
    on tile [t] or a blank tile. *)
val string_of_tile : tile -> string

(** [tile_of_char c] is the tile represented of the character [c].  ['_']
    represents the blank tile, while all lowercase letters a-z represent their
    corresponding tiles.  Precondition: [c] in ([[a-z]] + ['_']). *)
val tile_of_char : char -> tile