jdk.graal.compiler.graphio.DefaultGraphBlocks Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of compiler Show documentation

The GraalVM compiler and the Graal-truffle optimizer.

There is a newer version: 24.1.1

/*
 * Copyright (c) 2011, 2018, 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.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * 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 jdk.graal.compiler.graphio;

import java.util.Collection;
import java.util.Collections;

final class DefaultGraphBlocks implements GraphBlocks {
    private static final DefaultGraphBlocks DEFAULT = new DefaultGraphBlocks();

    private DefaultGraphBlocks() {
    }

    @SuppressWarnings("unchecked")
    public static  GraphBlocks empty() {
        return (GraphBlocks) DEFAULT;
    }

    @Override
    public Collection blocks(Object graph) {
        return Collections.emptyList();
    }

    @Override
    public int blockId(Object block) {
        return -1;
    }

    @Override
    public Collection blockNodes(Object info, Object block) {
        return Collections.emptyList();
    }

    @Override
    public Collection blockSuccessors(Object block) {
        return Collections.emptyList();
    }
}