File : asgc-graph-links-expandable_managed.ads
-- The Ada Structured Library - A set of container classes and general
-- tools for use with Ada95.
-- Copyright (C) 1998-1999 Corey Minyard (minyard@acm.org)
--
-- This library is free software; you can redistribute it and/or modify it
-- under the terms of the GNU General Public License as published by the
-- Free Software Foundation; either version 2 of the License, or (at your
-- option) any later version.
--
-- This library is distributed in the hope that it will be useful, but
-- WITHOUT ANY WARRANTY; without even the implied warranty of
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-- General Public License for more details.
--
-- You should have received a copy of the GNU General Public License along
-- with this library; if not, write to the Free Software Foundation, Inc.,
-- 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
--
-- As a special exception, if other files instantiate generics from this
-- unit, or you link this unit with other files to produce an executable,
-- this unit does not by itself cause the resulting executable to be
-- covered by the GNU General Public License. This exception does not
-- however invalidate any other reasons why the executable file might be
-- covered by the GNU Public License.
--
with System.Storage_Pools;
------------------------------------------------------------------------
-- A Graph_Link that keeps its links inside a dynamically allocated
-- array that will be reallocated as necessary for growth.
generic
Initial_Size : Positive;
Increment : Natural;
type Pool_Type is new System.Storage_Pools.Root_Storage_Pool with private;
My_Pool : in out Pool_Type;
package Asgc.Graph.Links.Expandable_Managed is
subtype Graph_Link_Parent is Links.Graph_Link;
type Graph_Link is new Graph_Link_Parent with private;
type Graph_Link_Class is
access all Graph_Link'Class;
procedure Free_Graph_Link (Node : in out Graph_Link);
procedure Copied_Graph_Link (Node : in out Graph_Link);
subtype Graph_Link_It_Parent is Links.Graph_Link_It;
type Graph_Link_It is new Graph_Link_It_Parent with private;
procedure Set_Node (Iter : in out Graph_Link_It;
Node : in Links.Graph_Link_Class);
procedure Add (Node : in out Graph_Link;
Val : in Link_Type;
Contents : in Link_Contained_Type);
procedure Delete_First (Node : in out Graph_Link);
procedure Delete_Val (Node : in out Graph_Link;
Val : in Link_Type;
Instance : in Positive := 1);
function Get_Pos (Node : in Graph_Link;
Pos : in Positive)
return Link_Type;
function Val_Exists (Node : in Graph_Link;
Val : in Link_Type;
Instance : in Positive := 1)
return Boolean;
procedure Delete (Iter : in out Graph_Link_It;
Is_End : out End_Marker);
procedure First (Iter : in out Graph_Link_It;
Is_End : out End_Marker);
procedure Next (Iter : in out Graph_Link_It;
Is_End : out End_Marker);
procedure Find (Iter : in out Graph_Link_It;
Val : in Link_Type;
Found : out Boolean;
Instance : in Positive := 1);
procedure Find_Again (Iter : in out Graph_Link_It;
Found : out Boolean);
function Get_Instance_Number (Iter : in Graph_Link_It)
return Positive;
function Get_Instance_Number (Node : in Graph_Link;
Pos : in Positive)
return Positive;
function Get (Iter : in Graph_Link_It)
return Link_Type;
function Get_Contents (Iter : in Graph_Link_It)
return Link_Contained_Type;
function Get_Contents (Node : in Graph_Link;
Val : in Link_Type;
Instance : in Positive := 1)
return Link_Contained_Type;
function Get_First_Contents (Node : in Graph_Link)
return Link_Contained_Type;
procedure Set_Contents (Iter : in out Graph_Link_It;
Contents : in Link_Contained_Type);
function Link_Count (Node : in Graph_Link) return Natural;
private
type Link is record
Val : Link_Type;
Contents : Link_Contained_Type;
end record;
type Edge_Array is array (Positive range <>) of Link;
type Edge_Array_Ptr is access all Edge_Array;
for Edge_Array_Ptr'Storage_Pool use My_Pool;
type Graph_Link is new Graph_Link_Parent with record
-- We start of with a null edge array. This makes copying the array
-- much easier, since it won't allocate and possibly leak anything if
-- assigned over. Using a controlled type might make it even easier,
-- but that makes things slower, too.
Edges : Edge_Array_Ptr := null;
Size : Natural := 0;
-- How many times is the graph link begin used?
Refcount : Natural := 0;
end record;
type Graph_Link_It is new Graph_Link_It_Parent with record
Robj : Graph_Link_Class;
Pos : Positive;
end record;
end Asgc.Graph.Links.Expandable_Managed;