Mercurial > hg > truffle
view truffle/com.oracle.truffle.api.interop.java/src/com/oracle/truffle/api/interop/java/ArrayHasSizeNode.java @ 22540:72601dde92e8
added @TruffleBoundary to JavaFunctionNode.execute
author | Doug Simon <doug.simon@oracle.com> |
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date | Tue, 12 Jan 2016 14:25:28 +0100 |
parents | e70b20f4bb00 |
children |
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/* * Copyright (c) 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. Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * 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.truffle.api.interop.java; import com.oracle.truffle.api.frame.VirtualFrame; import com.oracle.truffle.api.interop.ForeignAccess; import com.oracle.truffle.api.nodes.RootNode; import java.lang.reflect.Array; final class ArrayHasSizeNode extends RootNode { ArrayHasSizeNode() { super(JavaInteropLanguage.class, null, null); } @Override public Object execute(VirtualFrame frame) { JavaInterop.JavaObject receiver = (JavaInterop.JavaObject) ForeignAccess.getReceiver(frame); Object obj = receiver.obj; if (obj == null) { return false; } try { return obj instanceof Object[] || Array.getLength(obj) >= 0; } catch (IllegalArgumentException ex) { return Boolean.FALSE; } } }