Mercurial > hg > graal-jvmci-8
view graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/snippets/ClassSnippets.java @ 7300:2912b72d840a
More complete and reusable Word type
author | Christian Wimmer <christian.wimmer@oracle.com> |
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date | Fri, 04 Jan 2013 12:08:11 -0800 |
parents | 9e27795a9d05 |
children |
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/* * Copyright (c) 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.hotspot.snippets; import static com.oracle.graal.hotspot.snippets.HotSpotSnippetUtils.*; import static com.oracle.graal.nodes.extended.UnsafeCastNode.*; import java.lang.reflect.*; import com.oracle.graal.nodes.*; import com.oracle.graal.snippets.*; import com.oracle.graal.snippets.ClassSubstitution.MethodSubstitution; import com.oracle.graal.word.*; /** * Snippets for {@link java.lang.Class} methods. */ @ClassSubstitution(java.lang.Class.class) public class ClassSnippets implements SnippetsInterface { @MethodSubstitution(isStatic = false) public static int getModifiers(final Class<?> thisObj) { Word klass = loadWordFromObject(thisObj, klassOffset()); if (klass == Word.zero()) { // Class for primitive type return Modifier.ABSTRACT | Modifier.FINAL | Modifier.PUBLIC; } else { return klass.readInt(klassModifierFlagsOffset()); } } @MethodSubstitution(isStatic = false) public static boolean isInterface(final Class<?> thisObj) { Word klass = loadWordFromObject(thisObj, klassOffset()); if (klass == Word.zero()) { return false; } else { int accessFlags = klass.readInt(klassAccessFlagsOffset()); return (accessFlags & Modifier.INTERFACE) != 0; } } @MethodSubstitution(isStatic = false) public static boolean isArray(final Class<?> thisObj) { Word klass = loadWordFromObject(thisObj, klassOffset()); if (klass == Word.zero()) { return false; } else { int layoutHelper = klass.readInt(klassLayoutHelperOffset()); return (layoutHelper & arrayKlassLayoutHelperIdentifier()) != 0; } } @MethodSubstitution(isStatic = false) public static boolean isPrimitive(final Class<?> thisObj) { Word klass = loadWordFromObject(thisObj, klassOffset()); return klass == Word.zero(); } @MethodSubstitution(isStatic = false) public static Class<?> getSuperclass(final Class<?> thisObj) { Word klass = loadWordFromObject(thisObj, klassOffset()); if (klass != Word.zero()) { int accessFlags = klass.readInt(klassAccessFlagsOffset()); if ((accessFlags & Modifier.INTERFACE) == 0) { int layoutHelper = klass.readInt(klassLayoutHelperOffset()); if ((layoutHelper & arrayKlassLayoutHelperIdentifier()) != 0) { return Object.class; } else { Word superKlass = klass.readWord(klassSuperKlassOffset()); if (superKlass == Word.zero()) { return null; } else { return unsafeCast(superKlass.readObject(classMirrorOffset()), Class.class, true, true); } } } } return null; } @MethodSubstitution(isStatic = false) public static Class<?> getComponentType(final Class<?> thisObj) { Word klass = loadWordFromObject(thisObj, klassOffset()); if (klass != Word.zero()) { int layoutHelper = klass.readInt(klassLayoutHelperOffset()); if ((layoutHelper & arrayKlassLayoutHelperIdentifier()) != 0) { return unsafeCast(klass.readObject(arrayKlassComponentMirrorOffset()), Class.class, true, true); } } return null; } @MethodSubstitution(isStatic = false) public static boolean isInstance(final Class<?> thisObj, Object obj) { return !thisObj.isPrimitive() && MaterializeNode.isInstance(thisObj, obj); } }