net.sourceforge.phpeclipse/src/net/sourceforge/phpeclipse/phpeditor/JavaAnnotationIterator.java

   1 /*******************************************************************************
   2  * Copyright (c) 2000, 2003 IBM Corporation and others.
   3  * All rights reserved. This program and the accompanying materials
   4  * are made available under the terms of the Common Public License v1.0
   5  * which accompanies this distribution, and is available at
   6  * http://www.eclipse.org/legal/cpl-v10.html
   7  *
   8  * Contributors:
   9  *     IBM Corporation - initial API and implementation
  10  *******************************************************************************/
  11 package net.sourceforge.phpeclipse.phpeditor;
  12
  13 import java.util.Iterator;
  14
  15 import org.eclipse.jface.text.source.IAnnotationModel;
  16
  17
  18 /**
  19  * Filters problems based on their types.
  20  */
  21 public class JavaAnnotationIterator implements Iterator {
  22
  23         private Iterator fIterator;
  24         private IJavaAnnotation fNext;
  25         private boolean fSkipIrrelevants;
  26
  27         public JavaAnnotationIterator(IAnnotationModel model, boolean skipIrrelevants) {
  28                 fIterator= model.getAnnotationIterator();
  29                 fSkipIrrelevants= skipIrrelevants;
  30                 skip();
  31         }
  32
  33         private void skip() {
  34                 while (fIterator.hasNext()) {
  35                         Object next= fIterator.next();
  36                         if (next instanceof IJavaAnnotation) {
  37                                 IJavaAnnotation a= (IJavaAnnotation) next;
  38                                 if (fSkipIrrelevants) {
  39                                         if (a.isRelevant()) {
  40                                                 fNext= a;
  41                                                 return;
  42                                         }
  43                                 } else {
  44                                         fNext= a;
  45                                         return;
  46                                 }
  47                         }
  48                 }
  49                 fNext= null;
  50         }
  51
  52         /*
  53          * @see Iterator#hasNext()
  54          */
  55         public boolean hasNext() {
  56                 return fNext != null;
  57         }
  58
  59         /*
  60          * @see Iterator#next()
  61          */
  62         public Object next() {
  63                 try {
  64                         return fNext;
  65                 } finally {
  66                         skip();
  67                 }
  68         }
  69
  70         /*
  71          * @see Iterator#remove()
  72          */
  73         public void remove() {
  74                 throw new UnsupportedOperationException();
  75         }
  76 }