Mercurial > hg > graal-jvmci-8
view jvmci/jdk.vm.ci.hotspot/src/jdk/vm/ci/hotspot/HotSpotObjectConstant.java @ 22697:57646377e480
Rename Compiler to JVMCICompiler and expose it from JVMCIRuntime.
author | Roland Schatz <roland.schatz@oracle.com> |
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date | Wed, 21 Oct 2015 13:47:47 +0200 |
parents | 1bbd4a7c274b |
children |
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/* * Copyright (c) 2009, 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.hotspot; import java.lang.invoke.CallSite; import java.util.Objects; import jdk.vm.ci.meta.Assumptions; import jdk.vm.ci.meta.JavaConstant; import jdk.vm.ci.meta.ResolvedJavaType; import jdk.vm.ci.meta.VMConstant; /** * Represents a constant non-{@code null} object reference, within the compiler and across the * compiler/runtime interface. */ public interface HotSpotObjectConstant extends JavaConstant, HotSpotConstant, VMConstant { JavaConstant compress(); JavaConstant uncompress(); /** * Gets the resolved Java type of the object represented by this constant. */ HotSpotResolvedObjectType getType(); /** * Gets the result of {@link Class#getClassLoader()} for the {@link Class} object represented by * this constant. * * @return {@code null} if this constant does not represent a {@link Class} object */ JavaConstant getClassLoader(); /** * Gets the {@linkplain System#identityHashCode(Object) identity} has code for the object * represented by this constant. */ int getIdentityHashCode(); /** * Gets the result of {@link Class#getComponentType()} for the {@link Class} object represented * by this constant. * * @return {@code null} if this constant does not represent a {@link Class} object */ JavaConstant getComponentType(); /** * Gets the result of {@link Class#getSuperclass()} for the {@link Class} object represented by * this constant. * * @return {@code null} if this constant does not represent a {@link Class} object */ JavaConstant getSuperclass(); /** * Gets the result of {@link CallSite#getTarget()} for the {@link CallSite} object represented * by this constant. * * @param assumptions used to register an assumption that the {@link CallSite}'s target does not * change * @return {@code null} if this constant does not represent a {@link CallSite} object */ JavaConstant getCallSiteTarget(Assumptions assumptions); /** * Determines if this constant represents an {@linkplain String#intern() interned} string. */ boolean isInternedString(); /** * Gets the object represented by this constant represents if it is of a given type. * * @param type the expected type of the object represented by this constant. If the object is * required to be of this type, then wrap the call to this method in * {@link Objects#requireNonNull(Object)}. * @return the object value represented by this constant if it is an * {@link ResolvedJavaType#isInstance(JavaConstant) instance of} {@code type} otherwise * {@code null} */ <T> T asObject(Class<T> type); /** * Gets the object represented by this constant represents if it is of a given type. * * @param type the expected type of the object represented by this constant. If the object is * required to be of this type, then wrap the call to this method in * {@link Objects#requireNonNull(Object)}. * @return the object value represented by this constant if it is an * {@link ResolvedJavaType#isInstance(JavaConstant) instance of} {@code type} otherwise * {@code null} */ Object asObject(ResolvedJavaType type); }