1------------------------------------------------------------------------------ 2-- -- 3-- GNAT LIBRARY COMPONENTS -- 4-- -- 5-- A D A . C O N T A I N E R S . H A S H _ T A B L E S -- 6-- -- 7-- S p e c -- 8-- -- 9-- Copyright (C) 2004-2011, Free Software Foundation, Inc. -- 10-- -- 11-- GNAT is free software; you can redistribute it and/or modify it under -- 12-- terms of the GNU General Public License as published by the Free Soft- -- 13-- ware Foundation; either version 3, or (at your option) any later ver- -- 14-- sion. GNAT is distributed in the hope that it will be useful, but WITH- -- 15-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY -- 16-- or FITNESS FOR A PARTICULAR PURPOSE. -- 17-- -- 18-- As a special exception under Section 7 of GPL version 3, you are granted -- 19-- additional permissions described in the GCC Runtime Library Exception, -- 20-- version 3.1, as published by the Free Software Foundation. -- 21-- -- 22-- You should have received a copy of the GNU General Public License and -- 23-- a copy of the GCC Runtime Library Exception along with this program; -- 24-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see -- 25-- <http://www.gnu.org/licenses/>. -- 26-- -- 27-- This unit was originally developed by Matthew J Heaney. -- 28------------------------------------------------------------------------------ 29 30-- This package declares the hash-table type used to implement hashed 31-- containers. 32 33package Ada.Containers.Hash_Tables is 34 pragma Pure; 35 -- Declare Pure so this can be imported by Remote_Types packages 36 37 generic 38 type Node_Type (<>) is limited private; 39 40 type Node_Access is access Node_Type; 41 42 package Generic_Hash_Table_Types is 43 type Buckets_Type is array (Hash_Type range <>) of Node_Access; 44 45 type Buckets_Access is access all Buckets_Type; 46 for Buckets_Access'Storage_Size use 0; 47 -- Storage_Size of zero so this package can be Pure 48 49 type Hash_Table_Type is tagged record 50 Buckets : Buckets_Access; 51 Length : Count_Type := 0; 52 Busy : Natural := 0; 53 Lock : Natural := 0; 54 end record; 55 end Generic_Hash_Table_Types; 56 57 generic 58 type Node_Type is private; 59 package Generic_Bounded_Hash_Table_Types is 60 type Nodes_Type is array (Count_Type range <>) of Node_Type; 61 type Buckets_Type is array (Hash_Type range <>) of Count_Type; 62 63 type Hash_Table_Type 64 (Capacity : Count_Type; 65 Modulus : Hash_Type) is 66 tagged record 67 Length : Count_Type := 0; 68 Busy : Natural := 0; 69 Lock : Natural := 0; 70 Free : Count_Type'Base := -1; 71 Nodes : Nodes_Type (1 .. Capacity) := (others => <>); 72 Buckets : Buckets_Type (1 .. Modulus) := (others => 0); 73 end record; 74 end Generic_Bounded_Hash_Table_Types; 75 76end Ada.Containers.Hash_Tables; 77