Mercurial > hg > graal-jvmci-8
view jvmci/jdk.vm.ci.meta/src/jdk/vm/ci/meta/ValueKind.java @ 23985:05922ce51c5e
Restore extra level of weakness in the ResolvedJavaType cache
author | Tom Rodriguez <tom.rodriguez@oracle.com> |
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date | Mon, 23 Jan 2017 15:50:05 -0800 |
parents | c351824fff81 |
children |
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/* * Copyright (c) 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 jdk.vm.ci.meta; /** * Represents the type of {@link Value values}. This class can be extended by compilers to track * additional information about values. */ public abstract class ValueKind<K extends ValueKind<K>> { private enum IllegalKind implements PlatformKind { ILLEGAL; private final EnumKey<IllegalKind> key = new EnumKey<>(this); public Key getKey() { return key; } public int getSizeInBytes() { return 0; } public int getVectorLength() { return 0; } public char getTypeChar() { return '-'; } } private static class IllegalValueKind extends ValueKind<IllegalValueKind> { IllegalValueKind() { super(IllegalKind.ILLEGAL); } @Override public IllegalValueKind changeType(PlatformKind newPlatformKind) { return this; } @Override public String toString() { return "ILLEGAL"; } } /** * The non-type. */ public static final ValueKind<?> Illegal = new IllegalValueKind(); private final PlatformKind platformKind; public ValueKind(PlatformKind platformKind) { this.platformKind = platformKind; } public final PlatformKind getPlatformKind() { return platformKind; } /** * Create a new {@link ValueKind} with a different {@link PlatformKind}. Subclasses must * override this to preserve the additional information added by the compiler. */ public abstract K changeType(PlatformKind newPlatformKind); /** * Returns a String representation of the kind, which will be included at the end of * {@link Value#toString()} implementation. Defaults to {@link #toString()} but can be * overridden to provide something more specific. */ public String getKindSuffix() { return toString(); } }