| /* |
| * Copyright (c) 2016, 2016, 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.core.common.type; |
| |
| /** |
| * A pair of stamp with one being the stamp that can be trusted and the other one being a guess that |
| * needs a dynamic check to be used. |
| */ |
| public final class StampPair { |
| |
| private final Stamp trustedStamp; |
| private final Stamp uncheckedStamp; |
| |
| private StampPair(Stamp trustedStamp, Stamp uncheckedStamp) { |
| assert trustedStamp != null; |
| this.trustedStamp = trustedStamp; |
| this.uncheckedStamp = uncheckedStamp; |
| } |
| |
| public static StampPair create(Stamp trustedStamp, Stamp uncheckedStamp) { |
| return new StampPair(trustedStamp, uncheckedStamp); |
| } |
| |
| public static StampPair createSingle(Stamp stamp) { |
| return new StampPair(stamp, null); |
| } |
| |
| public Stamp getUncheckedStamp() { |
| return uncheckedStamp; |
| } |
| |
| public Stamp getTrustedStamp() { |
| return trustedStamp; |
| } |
| |
| @Override |
| public String toString() { |
| if (uncheckedStamp == null) { |
| return trustedStamp.toString(); |
| } else { |
| return trustedStamp + " (unchecked=" + uncheckedStamp + ")"; |
| } |
| } |
| } |