Mercurial > hg > truffle
view graal/com.oracle.graal.api.meta/src/com/oracle/graal/api/meta/Value.java @ 9863:b2141bc6e98e
option values are either initialized upon creation or they must provide a lazily initialized value
author | Doug Simon <doug.simon@oracle.com> |
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date | Tue, 04 Jun 2013 15:42:42 +0200 |
parents | a886c764ea59 |
children | 8c4a3d9308a7 |
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/* * Copyright (c) 2009, 2012, 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.api.meta; import java.io.*; /** * Abstract base class for values manipulated by the compiler. All values have a {@linkplain Kind * kind} and are immutable. */ public abstract class Value implements Serializable { private static final long serialVersionUID = -6909397188697766469L; @SuppressWarnings("serial") public static final AllocatableValue ILLEGAL = new AllocatableValue(Kind.Illegal) { @Override public String toString() { return "-"; } }; private final Kind kind; private final PlatformKind platformKind; /** * Initializes a new value of the specified kind. * * @param platformKind the kind */ protected Value(PlatformKind platformKind) { this.platformKind = platformKind; if (platformKind instanceof Kind) { this.kind = (Kind) platformKind; } else { this.kind = Kind.Illegal; } } /** * Returns a String representation of the kind, which should be the end of all * {@link #toString()} implementation of subclasses. */ protected final String getKindSuffix() { return "|" + getKind().getTypeChar(); } /** * Returns the kind of this value. */ public final Kind getKind() { return kind; } /** * Returns the platform specific kind used to store this value. */ public final PlatformKind getPlatformKind() { return platformKind; } @Override public int hashCode() { return 41 + platformKind.hashCode(); } @Override public boolean equals(Object obj) { if (obj instanceof Value) { Value other = (Value) obj; return kind.equals(other.kind) && platformKind.equals(platformKind); } return false; } }