| /* |
| * Copyright (c) 2014, 2015, 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; |
| |
| import java.nio.ByteBuffer; |
| import java.util.Objects; |
| |
| import jdk.vm.ci.meta.SerializableConstant; |
| |
| /** |
| * Type describing values that support arithmetic operations. |
| */ |
| public abstract class ArithmeticStamp extends Stamp { |
| |
| private final ArithmeticOpTable ops; |
| |
| protected ArithmeticStamp(ArithmeticOpTable ops) { |
| this.ops = ops; |
| } |
| |
| public ArithmeticOpTable getOps() { |
| return ops; |
| } |
| |
| public abstract SerializableConstant deserialize(ByteBuffer buffer); |
| |
| @Override |
| public Stamp improveWith(Stamp other) { |
| if (this.isCompatible(other)) { |
| return this.join(other); |
| } |
| // Cannot improve, because stamps are not compatible. |
| return this; |
| } |
| |
| @Override |
| public int hashCode() { |
| final int prime = 31; |
| int result = 1; |
| result = prime * result + ops.hashCode(); |
| return result; |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| if (this == obj) { |
| return true; |
| } |
| if (!(obj instanceof ArithmeticStamp)) { |
| return false; |
| } |
| assert Objects.equals(ops, ((ArithmeticStamp) obj).ops) : ops + " vs. " + ((ArithmeticStamp) obj).ops; |
| return true; |
| } |
| } |
