------------------------------------------------------------------------------ -- -- -- Matreshka Project -- -- -- -- Localization, Internationalization, Globalization for Ada -- -- -- -- Runtime Library Component -- -- -- ------------------------------------------------------------------------------ -- -- -- Copyright © 2011, Vadim Godunko -- -- All rights reserved. -- -- -- -- Redistribution and use in source and binary forms, with or without -- -- modification, are permitted provided that the following conditions -- -- are met: -- -- -- -- * Redistributions of source code must retain the above copyright -- -- notice, this list of conditions and the following disclaimer. -- -- -- -- * Redistributions in binary form must reproduce the above copyright -- -- notice, this list of conditions and the following disclaimer in the -- -- documentation and/or other materials provided with the distribution. -- -- -- -- * Neither the name of the Vadim Godunko, IE nor the names of its -- -- contributors may be used to endorse or promote products derived from -- -- this software without specific prior written permission. -- -- -- -- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -- -- "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -- -- LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -- -- A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT -- -- HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, -- -- SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED -- -- TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR -- -- PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF -- -- LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING -- -- NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS -- -- SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. -- -- -- ------------------------------------------------------------------------------ -- $Revision: 1793 $ $Date: 2011-06-11 11:40:44 +0400 (Сб, 11 июн 2011) $ ------------------------------------------------------------------------------ -- This package provides proxy settings storage which implements fallbacks -- mechanism on top of several underling settings storages. ------------------------------------------------------------------------------ private with Ada.Containers.Vectors; package Matreshka.Internals.Settings.Fallbacks is type Fallback_Settings is new Abstract_Settings with private; function Create (Manager : not null access Abstract_Manager'Class) return not null Settings_Access; -- Creates fallbacks proxy. procedure Add (Self : not null access Fallback_Settings'Class; Storage : not null Settings_Access); -- Adds specified settings storage to be used to retrieve settings. First -- added storage is used to modify settings also. private package Vectors is new Ada.Containers.Vectors (Positive, Settings_Access); type Fallback_Settings is new Abstract_Settings with record Storages : Vectors.Vector; end record; overriding function Contains (Self : Fallback_Settings; Key : League.Strings.Universal_String) return Boolean; overriding procedure Finalize (Self : not null access Fallback_Settings); overriding function Name (Self : not null access Fallback_Settings) return League.Strings.Universal_String; -- Returns name of the first underling settings storage. overriding procedure Remove (Self : in out Fallback_Settings; Key : League.Strings.Universal_String); overriding procedure Set_Value (Self : in out Fallback_Settings; Key : League.Strings.Universal_String; Value : League.Holders.Holder); overriding procedure Sync (Self : in out Fallback_Settings); overriding function Value (Self : Fallback_Settings; Key : League.Strings.Universal_String) return League.Holders.Holder; end Matreshka.Internals.Settings.Fallbacks;