| /* |
| * Copyright (c) 2013, 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 jdk.vm.ci.meta; |
| |
| /** |
| * Represents a platform-specific low-level type for values. |
| */ |
| public interface PlatformKind { |
| |
| String name(); |
| |
| public interface Key { |
| |
| } |
| |
| class EnumKey<E extends Enum<E>> implements Key { |
| private final Enum<E> e; |
| |
| public EnumKey(Enum<E> e) { |
| this.e = e; |
| } |
| |
| @Override |
| public int hashCode() { |
| return e.ordinal(); |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| if (obj == this) { |
| return true; |
| } |
| if (obj instanceof EnumKey) { |
| EnumKey<?> that = (EnumKey<?>) obj; |
| return this.e == that.e; |
| } |
| return false; |
| } |
| } |
| |
| /** |
| * Gets a value associated with this object that can be used as a stable key in a map. The |
| * {@link Object#hashCode()} implementation of the returned value should be stable between VM |
| * executions. |
| */ |
| Key getKey(); |
| |
| /** |
| * Get the size in bytes of this {@link PlatformKind}. |
| */ |
| int getSizeInBytes(); |
| |
| /** |
| * Returns how many primitive values fit in this {@link PlatformKind}. For scalar types this is |
| * one, for SIMD types it may be higher. |
| */ |
| int getVectorLength(); |
| |
| /** |
| * Gets a single type char that identifies this type for use in debug output. |
| */ |
| char getTypeChar(); |
| } |