Language/OS - Multiplatform Resource Library/LANGUAGE OS.iso/a_utils/flex/aflexx-a/aflex.lha/aflex/src/ultrix/aflex.a

Text File | 1993-05-31 | 4.7 KB | 126 lines

-- TITLE aflex - main program
--
-- AUTHOR: John Self (UCI)
-- DESCRIPTION main subprogram of aflex, calls the major routines in order
-- $Header: /co/ua/self/arcadia/aflex/ada/src/RCS/aflex.a,v 1.11 90/10/15 20:00:40 self Exp Locker: self $
--***************************************************************************
--                              aflex
--                          version 1.3a
--***************************************************************************
--
--                            Arcadia Project
--               Department of Information and Computer Science
--                        University of California
--                        Irvine, California 92717
--
--    Send requests for aflex information to [e-mail]
--
--    Send bug reports for aflex to [e-mail]
--
-- Copyright (c) 1990 Regents of the University of California.
-- All rights reserved.
--
-- This software was developed by John Self of the Arcadia project
-- at the University of California, Irvine.
--
-- Redistribution and use in source and binary forms are permitted
-- provided that the above copyright notice and this paragraph are
-- duplicated in all such forms and that any documentation,
-- advertising materials, and other materials related to such
-- distribution and use acknowledge that the software was developed
-- by the University of California, Irvine.  The name of the
-- University may not be used to endorse or promote products derived
-- from this software without specific prior written permission.
-- THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
-- IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
-- WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
--
--    This program is based on the flex program written by Vern Paxson.
--
--    The following is the copyright notice from flex, from which aflex is
--    derived.
--    Copyright (c) 1989 The Regents of the University of California.
--    All rights reserved.
--
--    This code is derived from software contributed to Berkeley by
--    Vern Paxson.
--
--      The United States Government has rights in this work pursuant to
--    contract no. DE-AC03-76SF00098 between the United States Department of
--    Energy and the University of California.
--
--    Redistribution and use in source and binary forms are permitted
--    provided that the above copyright notice and this paragraph are
--    duplicated in all such forms and that any documentation,
--    advertising materials, and other materials related to such
--    distribution and use acknowledge that the software was developed
--    by the University of California, Berkeley.  The name of the
--    University may not be used to endorse or promote products derived
--    from this software without specific prior written permission.
--    THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
--    IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
--    WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
--
--*****************setenvduplicaduplicad*

with MAIN_BODY, DFA, GEN, MISC_DEFS, TEXT_IO, MISC;
with TSTRING, TEMPLATE_MANAGER, EXTERNAL_FILE_MANAGER; use MISC_DEFS, TEXT_IO,
  TSTRING, EXTERNAL_FILE_MANAGER;
--/ if DEC then
function AFLEX return INTEGER is
--/ elsif Systeam then
--// procedure AFLEX is
--/ else
--// function AFLEX return INTEGER is
--/ end if;
    copyright : constant string :=
    "@(#) Copyright (c) 1990 Regents of the University of California.";
        copyright2 : constant string :=
    "All rights reserved.";
begin
  MAIN_BODY.AFLEXINIT;

  MAIN_BODY.READIN;

  if (SYNTAXERROR) then
    MAIN_BODY.AFLEXEND(1);
  end if;

  if (PERFORMANCE_REPORT) then
    if (INTERACTIVE) then
      TEXT_IO.PUT_LINE(STANDARD_ERROR,
        "-I (interactive) entails a minor performance penalty");
    end if;


  end if;

  if (VARIABLE_TRAILING_CONTEXT_RULES) then
    MISC.AFLEXERROR("can't handle variable trailing context rules");
  end if;

  -- convert the ndfa to a dfa
  DFA.NTOD;

  -- generate the Ada state transition tables from the DFA
  GEN.MAKE_TABLES;

  TEMPLATE_MANAGER.GENERATE_IO_FILE;
  TEMPLATE_MANAGER.GENERATE_DFA_FILE;
  MAIN_BODY.AFLEXEND(0);
  --/ if not Systeam then -- No way to return a status code with Systeam?
  return 0;
  --/ end if;
exception
  when MAIN_BODY.AFLEX_TERMINATE =>
  --/ if not Systeam then -- No way to return a status code with Systeam?
    return MAIN_BODY.TERMINATION_STATUS;
  --/ else
--//     null;
  --/ end if;
end AFLEX;



es a private type; therefore, these