/usr/share/ada/adainclude/opentoken/opentoken-recognizer-graphic_character.ads 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, 2008 Christoph Karl Walter Grein
--
-- 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 package implements a token recognizer for a character literal 'x',
-- where all graphic characters are allowed for x except those given in an
-- exclusion set.
-------------------------------------------------------------------------------
with Ada.Strings.Maps;
package OpenToken.Recognizer.Graphic_Character is
type Instance is new OpenToken.Recognizer.Instance with private;
----------------------------------------------------------------------------
-- Call this procedure to create a Graphic_Character token.
----------------------------------------------------------------------------
function Get (Exclude : Ada.Strings.Maps.Character_Set := Ada.Strings.Maps.Null_Set)
return Instance;
----------------------------------------------------------------------------
-- Call this procedure to redefine the exclusion set.
----------------------------------------------------------------------------
procedure Redefine (Inst : in out Instance;
Exclude : in Ada.Strings.Maps.Character_Set);
private
type State_ID is (Opening_Tick, The_Character, Closing_Tick, Done);
type Instance is new OpenToken.Recognizer.Instance with record
Excluded : Ada.Strings.Maps.Character_Set;
-- The finite state machine state
State : State_ID := Opening_Tick;
end record;
----------------------------------------------------------------------------
-- This procedure will be called when analysis on a new candidate string
-- is started. The Token needs to clear its state (if any).
----------------------------------------------------------------------------
overriding procedure Clear (The_Token : in out Instance);
----------------------------------------------------------------------------
-- This procedure will be called to perform further analysis on a token
-- based on the given next character.
----------------------------------------------------------------------------
overriding procedure Analyze
(The_Token : in out Instance;
Next_Char : in Character;
Verdict : out Analysis_Verdict);
end OpenToken.Recognizer.Graphic_Character;
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