/usr/share/ada/adainclude/opentoken/opentoken-recognizer-character_set.adb is in libopentoken4-dev 5.0a-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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--
-- Copyright (C) 1999 FlightSafety International and Ted Dennison
--
-- This file is part of the OpenToken package.
--
-- The OpenToken package 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 3, or (at your option)
-- any later version. The OpenToken package 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 distributed with the OpenToken
-- package; see file GPL.txt. If not, write to the Free Software Foundation,
-- 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.
--
-- This software was originally developed by the following company, and was
-- released as open-source software as a service to the community:
--
-- FlightSafety International Simulation Systems Division
-- Broken Arrow, OK USA 918-259-4000
--
-------------------------------------------------------------------------------
-----------------------------------------------------------------------------
-- This package implements a token recognizer for a token of any
-- number of characters from a given set.
-----------------------------------------------------------------------------
package body OpenToken.Recognizer.Character_Set is
overriding procedure Clear (The_Token : in out Instance)
is begin
The_Token.State := Text;
end Clear;
overriding procedure Analyze
(The_Token : in out Instance;
Next_Char : in Character;
Verdict : out Analysis_Verdict)
is begin
case The_Token.State is
when Text =>
if Ada.Strings.Maps.Is_In (Element => Next_Char, Set => The_Token.Set) then
Verdict := Matches;
else
Verdict := Failed;
The_Token.State := Done;
end if;
when Done =>
-- We shouldn't get called from here.
Verdict := Failed;
end case;
end Analyze;
----------------------------------------------------------------------------
-- This procedure will be called to create a character set token
----------------------------------------------------------------------------
function Get (Set : in Ada.Strings.Maps.Character_Set;
Reportable : in Boolean := False)
return Instance
is begin
return (Report => Reportable,
State => Text,
Set => Set);
end Get;
end OpenToken.Recognizer.Character_Set;
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