/usr/share/ada/adainclude/opentoken/opentoken-text_feeder-string.ads is in libopentoken5-dev 6.0b-4.
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The actual contents of the file can be viewed below.
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--
-- Copyright (C) 1999 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.
--
-------------------------------------------------------------------------------
with Ada.Strings.Unbounded;
-------------------------------------------------------------------------------
-- This package provides a text feeder class that returns user-defined strings.
-------------------------------------------------------------------------------
package OpenToken.Text_Feeder.String is
type Instance is new OpenToken.Text_Feeder.Instance with private;
--------------------------------------------------------------------------
-- This function returns strings for the analyzer. This version of
-- it returns the string given it with the set command the first
-- time it is called. On subsequent calls, Token.EOF_Character is
-- retured.
--------------------------------------------------------------------------
overriding procedure Get
(Feeder : in out Instance;
New_Text : out Standard.String;
Text_End : out Integer);
----------------------------------------------------------------------------
-- This function sets the string to be returned the next time Get is called
----------------------------------------------------------------------------
procedure Set (Feeder : out Instance;
Value : in Standard.String
);
--------------------------------------------------------------------------
-- Return True if there is no more text to process. For this
-- feeder that happens after a Get when no Set has yet been
-- called.
--------------------------------------------------------------------------
overriding function End_Of_Text (Feeder : in Instance) return Boolean;
private
type Instance is new OpenToken.Text_Feeder.Instance with record
Next_Value : Ada.Strings.Unbounded.Unbounded_String :=
Ada.Strings.Unbounded.Null_Unbounded_String;
end record;
end OpenToken.Text_Feeder.String;
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