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|
-------------------------------------------------------------------------------
--
-- Copyright (C) 2006 Stephen Leake
--
-- 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.
--
-----------------------------------------------------------------------------
with OpenToken.Recognizer.Extended_Digits;
-- This package implements a token recognizer for Ada integer
-- syntax, with optional base, no exponent, and optional preceding
-- sign.
--
-- [sign] base # based_numeral #
-- [sign] numeral
package OpenToken.Recognizer.Based_Integer is
type Instance is new OpenToken.Recognizer.Instance with private;
not overriding function Get return Instance;
private
type State_ID is (First_Char, Maybe_Base, Numeral, Done);
type Instance is new OpenToken.Recognizer.Instance with record
Number_Recognizer : Extended_Digits.Instance;
Last_Verdict : Analysis_Verdict := Failed;
State : State_ID := First_Char;
Base : Natural := 0;
Based : Boolean := False;
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.Based_Integer;
|
