/usr/share/ada/adainclude/opentoken/opentoken-recognizer-integer.ads is in libopentoken5-dev 6.0b-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
--
-------------------------------------------------------------------------------
with OpenToken.Recognizer.Extended_Digits;
---------------------------------------------------------------------------
-- This package implements a token recognizer for an integer. An
-- integer is defined as a string starting with a series of digits,
-- optionally followed by an exponent specification. An exponent
-- specification is a letter 'e' (or 'E') followed by an optional
-- plus sign and decimal digits. Each of the sequences of digits may
-- be interspersed with one or more single underscores (but must not
-- end with an underscore), if not explicitly dis- allowed. When this
-- recognizer and the one for Java style based integers are used
-- together in the same syntax, note that the integer recognizer must
-- be created with leading zero disallowed or a string like 07 is
-- ambiguous. (However 0 is always a simple integer.)
---------------------------------------------------------------------------
package OpenToken.Recognizer.Integer is
type Instance is new OpenToken.Recognizer.Instance with private;
----------------------------------------------------------------------------
-- This procedure will be called to create an Integer token.
--
-- One would probably want to disallow signs in languages that use
-- '-' or '+' as an operator between integers. If your syntax does
-- not have such a concept, you will probably want to allow them.
--------------------------------------------------------------------------
function Get (Allow_Underscores : Boolean := True;
Allow_Exponent : Boolean := True;
Allow_Leading_Zero : Boolean := True;
Allow_Signs : Boolean := True
) return Instance;
private
type State_ID is (First_Char, First_Numeral, Numeral, Exponent_Sign, Exponent, Done);
type Instance is new OpenToken.Recognizer.Instance with record
Allow_Exponent : Boolean;
Allow_Leading_Zero : Boolean;
Allow_Signs : Boolean;
-- The finite state machine state
Decimal_Recognizer : Extended_Digits.Instance; -- Numeral, Exponent
Last_Verdict : Analysis_Verdict := Failed;
Check_Zero : Boolean := True;
State : State_ID := First_Char;
end record;
overriding procedure Clear (The_Token : in out Instance);
overriding procedure Analyze
(The_Token : in out Instance;
Next_Char : in Character;
Verdict : out Analysis_Verdict);
end OpenToken.Recognizer.Integer;
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