/usr/share/ada/adainclude/alog/alog-transforms.ads is in libalog2-dev 0.5.2-2.
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-- Copyright (c) 2008,
-- Reto Buerki, Adrian-Ken Rueegsegger
--
-- This file is part of Alog.
--
-- Alog is free software; you can redistribute it and/or modify
-- it under the terms of the GNU Lesser General Public License as published
-- by the Free Software Foundation; either version 2.1 of the License, or
-- (at your option) any later version.
--
-- Alog 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 Lesser General Public License for more details.
--
-- You should have received a copy of the GNU Lesser General Public License
-- along with Alog; if not, write to the Free Software
-- Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
-- MA 02110-1301 USA
--
with Ada.Strings.Unbounded;
-- Abstract package Transforms. Provides methods used by all Alog transforms.
package Alog.Transforms is
use Ada.Strings.Unbounded;
type Instance is abstract tagged limited private;
-- Abstract type transform instance. All tranforms in the Alog framework
-- must implement this type.
subtype Class is Instance'Class;
type Handle is access Class;
function "="
(Left : Handle;
Right : Handle)
return Boolean;
-- Equal function.
procedure Set_Name
(Transform : in out Class;
Name : String);
-- Set transform name.
function Get_Name (Transform : Class) return String;
-- Get transform name.
function Transform_Message
(Transform : Instance;
Level : Log_Level;
Msg : String)
return String is abstract;
-- Transform message with specified log level.
procedure Setup (Transform : in out Instance) is null;
-- Each transform must provide a Setup-procedure. These procedures are
-- called by logger instances when attaching Transforms. All needed
-- operations prior to transforming log messages should be done here.
procedure Teardown (Transform : in out Instance) is null;
-- Each transform must provide a Teardown-procedure. These procedures are
-- called by logger instances when detaching Transforms or when the logger
-- object gets out of scope.
private
type Instance is abstract tagged limited record
Name : Unbounded_String := To_Unbounded_String ("sample-transform");
-- Transform Name. Names must be unique.
end record;
end Alog.Transforms;
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