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------------------------------------------------------------------------------
-- --
-- POLYORB COMPONENTS --
-- --
-- S T R I N G _ S E T S --
-- --
-- B o d y --
-- --
-- Copyright (C) 2006-2012, Free Software Foundation, Inc. --
-- --
-- This is free software; you can redistribute it and/or modify it under --
-- terms of the GNU General Public License as published by the Free Soft- --
-- ware Foundation; either version 3, or (at your option) any later ver- --
-- sion. This software is distributed in the hope that it will be useful, --
-- but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHAN- --
-- TABILITY 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 and --
-- a copy of the GCC Runtime Library Exception along with this program; --
-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
-- <http://www.gnu.org/licenses/>. --
-- --
-- PolyORB is maintained by AdaCore --
-- (email: sales@adacore.com) --
-- --
------------------------------------------------------------------------------
with GNAT.HTable;
package body String_Sets is
function Hash_String is new GNAT.HTable.Hash (Header_Num);
function Hash (F : String_Ptr) return Header_Num is
begin
return Hash_String (F.all);
end Hash;
function Equal (F1, F2 : String_Ptr) return Boolean is
begin
return F1.all = F2.all;
end Equal;
function Contains (Container : Set; Element : String) return Boolean is
Element_Copy : aliased constant String := Element;
begin
return Tables.Get (Container.Set, Element_Copy'Unchecked_Access);
end Contains;
procedure Insert (Container : in out Set; Element : String) is
begin
-- Avoid heap allocation if the string is already in the set
if not Contains (Container, Element) then
Tables.Set (Container.Set, new String'(Element), True);
end if;
end Insert;
end String_Sets;
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