| /* |
| * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| package org.graalvm.compiler.graph.test.matchers; |
| |
| import org.hamcrest.Description; |
| import org.hamcrest.Matcher; |
| import org.hamcrest.TypeSafeDiagnosingMatcher; |
| import org.hamcrest.core.IsNot; |
| |
| import org.graalvm.compiler.graph.iterators.NodeIterable; |
| |
| public class NodeIterableIsEmpty extends TypeSafeDiagnosingMatcher<NodeIterable<?>> { |
| |
| private static final NodeIterableIsEmpty INSTANCE = new NodeIterableIsEmpty(); |
| |
| @Override |
| public boolean matchesSafely(NodeIterable<?> iterable, Description mismatchDescription) { |
| mismatchDescription.appendText("is a non-empty NodeIterable"); |
| return iterable.isEmpty(); |
| } |
| |
| @Override |
| public void describeTo(Description description) { |
| description.appendText("is an empty NodeIterable"); |
| } |
| |
| public static Matcher<NodeIterable<?>> isEmpty() { |
| return INSTANCE; |
| } |
| |
| public static Matcher<NodeIterable<?>> isNotEmpty() { |
| return IsNot.not(INSTANCE); |
| } |
| } |