Mercurial > hg > graal-jvmci-8
view graal/com.oracle.graal.lir/src/com/oracle/graal/lir/CompositeValue.java @ 9631:3c9aeef2702c
Value: provide proper `hashCode()' and `equals()' implementations
author | Bernhard Urban <bernhard.urban@jku.at> |
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date | Fri, 10 May 2013 12:43:43 +0200 |
parents | 149fe42411df |
children | 65d7696fb58a |
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/* * Copyright (c) 2013, 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 com.oracle.graal.lir; import java.lang.annotation.*; import com.oracle.graal.api.meta.*; import com.oracle.graal.lir.LIRInstruction.OperandFlag; import com.oracle.graal.lir.LIRInstruction.OperandMode; import com.oracle.graal.lir.LIRInstruction.ValueProcedure; /** * Base class to represent values that need to be stored in more than one register. */ public abstract class CompositeValue extends Value { private static final long serialVersionUID = -169180052684126180L; @Retention(RetentionPolicy.RUNTIME) @Target(ElementType.FIELD) public static @interface Component { OperandFlag[] value() default OperandFlag.REG; } private final CompositeValueClass valueClass; public CompositeValue(PlatformKind kind) { super(kind); valueClass = CompositeValueClass.get(getClass()); } public final void forEachComponent(OperandMode mode, ValueProcedure proc) { valueClass.forEachComponent(this, mode, proc); } @Override public String toString() { return valueClass.toString(this); } @Override public int hashCode() { final int prime = 31; int result = super.hashCode(); result = prime * result + ((valueClass == null) ? 0 : valueClass.hashCode()); return result; } @Override public boolean equals(Object obj) { if (this == obj) { return true; } if (!super.equals(obj)) { return false; } if (getClass() != obj.getClass()) { return false; } CompositeValue other = (CompositeValue) obj; if (valueClass == null) { if (other.valueClass != null) { return false; } } else if (!valueClass.equals(other.valueClass)) { return false; } return true; } }