-- Natools.S_Expressions.Atom_Buffers implements an unbounded Atom designed --
-- to be used as an input buffer, accumulating data and extracting it as a  --
-- single Atom object.                                                      --
-- It also provides an individual Octet accessor, used in parser internal   --
-- recursive buffer.                                                        --
------------------------------------------------------------------------------

with Natools.References;
with Natools.Storage_Pools;

package Natools.S_Expressions.Atom_Buffers is
   pragma Preelaborate (Atom_Buffers);

   package Atom_Refs is new Natools.References
     (Atom,
      Storage_Pools.Access_In_Default_Pool'Storage_Pool,
      Storage_Pools.Access_In_Default_Pool'Storage_Pool);

   type Atom_Buffer is tagged private;

   procedure Preallocate (Buffer : in out Atom_Buffer; Length : in Count);
      --  Preallocate enough memory to append Length octets without
      --  any further allocation.

   procedure Append (Buffer : in out Atom_Buffer; Data : in Atom);