46 lines
1.7 KiB
Java
Executable File
46 lines
1.7 KiB
Java
Executable File
/*
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* aptIn16 - Apt implementation with Java 6 annotation processors.
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* Copyright (C) 2012 Travis Burtrum (moparisthebest)
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published y
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package com.moparisthebest.mirror.convert;
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import java.util.*;
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public class InstanceFilter {
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// Assumes targetKinds and E are sensible.
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private static <E, F extends E, C extends Collection<F>> C collectionFilter(C collection, Iterable<? extends E> elements, Class<F> clazz) {
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for (E e : elements) {
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//if (clazz.isAssignableFrom(e.getClass()))
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if (clazz.isInstance(e))
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collection.add(clazz.cast(e));
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}
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return collection;
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}
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// Assumes targetKinds and E are sensible.
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public static <E, F extends E> List<F> listFilter(Iterable<? extends E> elements, Class<F> clazz) {
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return collectionFilter(new ArrayList<F>(), elements, clazz);
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}
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// Assumes targetKinds and E are sensible.
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public static <E, F extends E> Set<F> setFilter(Iterable<? extends E> elements, Class<F> clazz) {
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// Return set preserving iteration order of input set.
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return collectionFilter(new LinkedHashSet<F>(), elements, clazz);
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}
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}
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