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-------------------------------------------------------------------------------
--
-- Copyright (C) 1999,2000 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.
-------------------------------------------------------------------------------
with Ada.Text_IO;
with OpenToken.Text_Feeder.Text_IO;
---------------------------------------------------------------------------
-- This example is an implementation of Example 3.6 from "Compilers
-- Principles, Techniques, and Tools" by Aho, Sethi, and Ullman (aka: "The
-- Dragon Book").
---------------------------------------------------------------------------
procedure Asu_Example_3_6.Run is
-- Global text file for reading parse data
File : Ada.Text_IO.File_Type;
File_Name : constant String := "asu.txt";
Analyzer : Tokenizer.Instance := Tokenizer.Initialize (Syntax);
begin
Ada.Text_IO.Open
(File => File,
Mode => Ada.Text_IO.In_File,
Name => File_Name
);
Ada.Text_IO.Set_Input (File);
Tokenizer.Input_Feeder := OpenToken.Text_Feeder.Text_IO.Create;
for Q in 1 .. 10 loop
Tokenizer.Find_Next (Analyzer);
Ada.Text_IO.Put_Line ("Found " & Example_Token_ID'Image (Tokenizer.ID (Analyzer)));
end loop;
end Asu_Example_3_6.Run;
|
