suplib/src/RCSPhrases.m3


 Copyright 1999-2003 John D. Polstra.
 * All rights reserved.
 *
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 * modification, are permitted provided that the following conditions
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 * 1. Redistributions of source code must retain the above copyright
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 * 2. Redistributions in binary form must reproduce the above copyright
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 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgment:
 *      This product includes software developed by John D. Polstra.
 * 4. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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 * $Id: RCSPhrases.m3.html,v 1.3 2010-04-29 17:20:02 wagner Exp $ 

MODULE RCSPhrases;

IMPORT RCSPhrase, RefSeq;

REVEAL
  T = RefSeq.T BRANDED OBJECT END;

  Iterator = IterPublic BRANDED OBJECT
    phrases: T;
    cur: CARDINAL;
  OVERRIDES
    next := IterNext;
  END;

PROCEDURE New(): T =
  BEGIN
    RETURN NEW(T).init();
  END New;

PROCEDURE Append(phrases: T; phrase: RCSPhrase.T) =
  BEGIN
    phrases.addhi(phrase);
  END Append;

PROCEDURE Iterate(phrases: T): Iterator =
  BEGIN
    RETURN NEW(Iterator, phrases := phrases, cur := 0);
  END Iterate;

PROCEDURE IterNext(self: Iterator;
                   VAR phrase: RCSPhrase.T): BOOLEAN =
  BEGIN
    IF self.phrases # NIL AND self.cur < self.phrases.size() THEN
      phrase := self.phrases.get(self.cur);
      INC(self.cur);
      RETURN TRUE;
    END;
    RETURN FALSE;
  END IterNext;

BEGIN
END RCSPhrases.