/usr/share/ada/adainclude/opentoken/opentoken-recognizer-identifier.adb is in libopentoken3-dev 4.0b-4.
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 an identifier
-------------------------------------------------------------------------------
package body OpenToken.Recognizer.Identifier is
overriding procedure Clear (The_Token : in out Instance)
is begin
The_Token.State := First_Char;
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 First_Char =>
if Ada.Strings.Maps.Is_In
(Element => Next_Char,
Set => The_Token.Start_Chars)
then
Verdict := Matches;
The_Token.State := Text;
else
Verdict := Failed;
The_Token.State := Done;
end if;
when Text =>
if
Ada.Strings.Maps.Is_In
(Element => Next_Char,
Set => The_Token.Body_Chars)
then
Verdict := Matches;
elsif Next_Char = '_' and then The_Token.Has_Separator then
Verdict := So_Far_So_Good;
The_Token.State := Underscore;
else
Verdict := Failed;
The_Token.State := Done;
end if;
when Underscore =>
if
Ada.Strings.Maps.Is_In
(Element => Next_Char,
Set => The_Token.Body_Chars)
then
Verdict := Matches;
The_Token.State := Text;
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 an identifier token
----------------------------------------------------------------------------
function Get (Start_Chars : in Ada.Strings.Maps.Character_Set :=
Ada.Strings.Maps.Constants.Letter_Set;
Body_Chars : in Ada.Strings.Maps.Character_Set :=
Ada.Strings.Maps.Constants.Alphanumeric_Set;
Has_Separator : in Boolean := True
) return Instance is
begin
return (Report => True,
Start_Chars => Start_Chars,
Body_Chars => Body_Chars,
Has_Separator => Has_Separator,
State => First_Char);
end Get;
end OpenToken.Recognizer.Identifier;
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