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-------------------------------------------------------------------------------
--
-- Copyright (C) 2000 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 2, 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.
--
-- Maintainer: Ted Dennison (dennison@telepath.com)
--
-- Update History:
-- $Log: token_sequence_test-run.adb,v $
-- Revision 1.1 2000/08/12 21:00:48 Ted
-- initial version
--
--
-------------------------------------------------------------------------------
with Ada.Exceptions;
with Ada.Text_IO;
with OpenToken.Token.Sequence;
with OpenToken.Text_Feeder.String;
use type OpenToken.Token.Sequence.Instance;
-------------------------------------------------------------------------------
-- Test driver for the token sequence handling code.
-------------------------------------------------------------------------------
procedure Token_Sequence_Test.Run is
begin
----------------------------------------------------------------------------
-- Test Case 1
--
-- Inputs : A valid sequence of tokens.
--
-- Expected Results : A Token.Sequence
-- Purpose : Verify that a valid sequence of tokens is properly parsed.
Test_Case_1 : declare
Parse_String : constant String := "Do several things 200 times in a row";
Analyzer : Tokenizer.Instance := Tokenizer.Initialize (Syntax, String_Feeder'access);
Sequence : OpenToken.Token.Sequence.Class :=
Do_Keyword & Several_Keyword & Things_Keyword &
Int_Literal & Times_Keyword &
In_Keyword & A_Keyword & Row_Keyword;
Passed : Boolean := True;
begin
Ada.Text_IO.Put ("Testing parsing of valid token sequence...");
Ada.Text_IO.Flush;
-- Put the parse string into the analyzer's text feeder.
OpenToken.Text_Feeder.String.Set
(Feeder => String_Feeder,
Value => Parse_String
);
-- Load up the first token
Tokenizer.Find_Next (Analyzer);
-- Perform the parse
OpenToken.Token.Sequence.Parse
(Match => Sequence,
Analyzer => Analyzer
);
if Tokenizer.ID (Analyzer) = EOF then
Ada.Text_IO.Put_Line ("passed");
else
Ada.Text_IO.Put_Line ("failed.");
Ada.Text_IO.Put_Line ("There was an unexpected " &
Token_Ids'Image (Tokenizer.ID (Analyzer)) &
" left on the input stream.");
end if;
exception
when Error: others =>
Ada.Text_IO.Put_Line ("failed due to parse exception:");
Ada.Text_IO.Put_Line (Ada.Exceptions.Exception_Information (Error));
end Test_Case_1;
----------------------------------------------------------------------------
-- Test Case 2
--
-- Inputs : An invalid token sequence.
--
-- Expected Results : A parse exception.
-- Purpose : Verify that an invalid token sequence is correctly
-- diagnosed.
--
Test_Case_2 : declare
Parse_String : constant String := "Do several things in a row";
Analyzer : Tokenizer.Instance := Tokenizer.Initialize (Syntax, String_Feeder'access);
Sequence : OpenToken.Token.Sequence.Class :=
Do_Keyword & Several_Keyword & Things_Keyword &
Int_Literal & Times_Keyword & In_Keyword &
A_Keyword & Row_Keyword;
Passed : Boolean := True;
begin
Ada.Text_IO.Put ("Testing parsing of invalid token sequence...");
Ada.Text_IO.Flush;
-- Put the parse string into the analyzer's text feeder.
OpenToken.Text_Feeder.String.Set
(Feeder => String_Feeder,
Value => Parse_String
);
-- Load up the first token
Tokenizer.Find_Next (Analyzer);
-- Parse token sequence
OpenToken.Token.Sequence.Parse
(Match => Sequence,
Analyzer => Analyzer
);
Ada.Text_IO.Put_Line ("failed.");
exception
when OpenToken.Token.Parse_Error =>
Ada.Text_IO.Put_Line ("passed.");
when Error : others =>
Ada.Text_IO.Put_Line ("failed due to parse exception:");
Ada.Text_IO.Put_Line (Ada.Exceptions.Exception_Information (Error));
end Test_Case_2;
end Token_Sequence_Test.Run;
|
