| /* |
| * Copyright (c) 2011, 2017, 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.graphio; |
| |
| import java.util.Collection; |
| import java.util.Collections; |
| |
| final class DefaultGraphBlocks implements GraphBlocks<Object, Object, Object> { |
| private static final DefaultGraphBlocks DEFAULT = new DefaultGraphBlocks(); |
| |
| private DefaultGraphBlocks() { |
| } |
| |
| @SuppressWarnings("unchecked") |
| public static <G, B, N> GraphBlocks<G, B, N> empty() { |
| return (GraphBlocks<G, B, N>) DEFAULT; |
| } |
| |
| @Override |
| public Collection<? extends Void> blocks(Object graph) { |
| return Collections.emptyList(); |
| } |
| |
| @Override |
| public int blockId(Object block) { |
| return -1; |
| } |
| |
| @Override |
| public Collection<? extends Object> blockNodes(Object info, Object block) { |
| return Collections.emptyList(); |
| } |
| |
| @Override |
| public Collection<? extends Object> blockSuccessors(Object block) { |
| return Collections.emptyList(); |
| } |
| } |