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annotate graal/com.oracle.max.graal.graph/src/com/oracle/max/graal/graph/iterators/FilteredNodeIterable.java @ 4411:cd2b68ef8e23

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cleanup around filter and predicates : remove duplicate compiler.util.NodeIterators add contains to NodeIterable support isNotA(Class).nor(Class) filtering support filtering on interfaces remove and/or(Class) from FilteredNodeIterable replace with isA(Class).or(Class) lower the cost on extending NodeIterable (remove the until field) NodeList is a NodeIterable Use NodeIterable functions where possible
author Gilles Duboscq <duboscq@ssw.jku.at>
date Mon, 30 Jan 2012 13:06:11 +0100
parents 60c48d99c28b
children
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1 /*
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2 * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 */
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23 package com.oracle.max.graal.graph.iterators;
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24
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25 import java.util.*;
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26
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27 import com.oracle.max.graal.graph.*;
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28
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29 public class FilteredNodeIterable<T extends Node> extends NodeIterable<T> {
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30 private final NodeIterable<T> nodeIterable;
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31 private NodePredicate predicate = NodePredicates.alwaysTrue();
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32 private NodePredicate until = NodePredicates.isNull();
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33 public FilteredNodeIterable(NodeIterable<T> nodeIterable) {
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34 this.nodeIterable = nodeIterable;
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35 }
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36 public FilteredNodeIterable<T> and(NodePredicate nodePredicate) {
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37 this.predicate = this.predicate.and(nodePredicate);
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38 return this;
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39 }
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40 public FilteredNodeIterable<T> or(NodePredicate nodePredicate) {
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41 this.predicate = this.predicate.or(nodePredicate);
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42 return this;
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43 }
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44 @Override
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45 public NodeIterable<T> until(final T u) {
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46 until = until.or(NodePredicates.equals(u));
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47 return this;
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48 }
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49 @Override
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50 public NodeIterable<T> until(final Class<? extends T> clazz) {
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51 until = until.or(NodePredicates.isA(clazz));
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52 return this;
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53 }
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54 @Override
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55 public Iterator<T> iterator() {
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56 final Iterator<T> iterator = nodeIterable.iterator();
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57 return new PredicatedProxyNodeIterator<>(until, iterator, predicate);
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58 }
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59
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60 @SuppressWarnings("unchecked")
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61 @Override
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62 public <F extends T> FilteredNodeIterable<F> filter(Class<F> clazz) {
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63 return (FilteredNodeIterable<F>) this.and(NodePredicates.isA(clazz));
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64 }
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65
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66 @Override
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67 public FilteredNodeIterable<T> filter(NodePredicate p) {
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68 return this.and(p);
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69 }
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70
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71 @Override
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72 public FilteredNodeIterable<T> filterInterface(Class< ? > iface) {
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73 return this.and(NodePredicates.isAInterface(iface));
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74 }
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75 }