Mercurial > hg > truffle
view truffle/com.oracle.truffle.api.interop.java/src/com/oracle/truffle/api/interop/java/JavaNewNode.java @ 22135:e70b20f4bb00
Implementing API for Java/Truffle interop. Based around JavaInterop.asJavaObject and JavaInterop.asTruffleObject methods. Connected to TruffleVM via Symbol.as(Class) wrapper. Verified by extended TCK.
author | Jaroslav Tulach <jaroslav.tulach@oracle.com> |
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date | Mon, 07 Sep 2015 17:07:20 +0200 |
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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.Constructor; import java.lang.reflect.InvocationTargetException; import java.util.List; final class JavaNewNode extends RootNode { JavaNewNode() { super(JavaInteropLanguage.class, null, null); } @Override public Object execute(VirtualFrame frame) { JavaInterop.JavaObject receiver = (JavaInterop.JavaObject) ForeignAccess.getReceiver(frame); List<Object> args = ForeignAccess.getArguments(frame); return execute(receiver, args.toArray()); } static Object execute(JavaInterop.JavaObject receiver, Object[] args) { if (receiver.obj != null) { throw new IllegalStateException("Can only work on classes: " + receiver.obj); } for (int i = 0; i < args.length; i++) { if (args[i] instanceof JavaInterop.JavaObject) { args[i] = ((JavaInterop.JavaObject) args[i]).obj; } } IllegalStateException ex = new IllegalStateException("No suitable constructor found for " + receiver.clazz); for (Constructor<?> constructor : receiver.clazz.getConstructors()) { try { Object ret = constructor.newInstance(args); if (JavaInterop.isPrimitive(ret)) { return ret; } return JavaInterop.asTruffleObject(ret); } catch (InstantiationException | IllegalAccessException | IllegalArgumentException | InvocationTargetException instEx) { ex = new IllegalStateException(instEx); } } throw ex; } }