Mercurial > hg > graal-jvmci-8
view graal/com.oracle.truffle.api.interop/src/com/oracle/truffle/api/interop/impl/SymbolInvokerImpl.java @ 21770:c76742cc2c6f
Polishing inter-operability APIs: Exposing only Message, TruffleObject and ForeignAccess-related classes.
author | Jaroslav Tulach <jaroslav.tulach@oracle.com> |
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date | Mon, 08 Jun 2015 04:50:13 +0200 |
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/* * Copyright (c) 2014, 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.impl; import java.io.*; import com.oracle.truffle.api.*; import com.oracle.truffle.api.frame.*; import com.oracle.truffle.api.impl.*; import com.oracle.truffle.api.interop.ForeignAccess; import com.oracle.truffle.api.interop.Message; import com.oracle.truffle.api.interop.TruffleObject; import com.oracle.truffle.api.nodes.*; public final class SymbolInvokerImpl extends SymbolInvoker { static final FrameDescriptor UNUSED_FRAMEDESCRIPTOR = new FrameDescriptor(); @Override protected Object invoke(Object symbol, Object... arr) throws IOException { if (symbol instanceof String) { return symbol; } if (symbol instanceof Number) { return symbol; } if (symbol instanceof Boolean) { return symbol; } Node executeMain = Message.createExecute(arr.length).createNode(); CallTarget callTarget = Truffle.getRuntime().createCallTarget(new TemporaryRoot(executeMain, (TruffleObject) symbol, arr)); VirtualFrame frame = Truffle.getRuntime().createVirtualFrame(arr, UNUSED_FRAMEDESCRIPTOR); Object ret = callTarget.call(frame); if (ret instanceof TruffleObject) { TruffleObject tret = (TruffleObject) ret; Object isBoxedResult; try { Node isBoxed = Message.IS_BOXED.createNode(); CallTarget isBoxedTarget = Truffle.getRuntime().createCallTarget(new TemporaryRoot(isBoxed, tret)); isBoxedResult = isBoxedTarget.call(frame); } catch (IllegalArgumentException ex) { isBoxedResult = false; } if (Boolean.TRUE.equals(isBoxedResult)) { Node unbox = Message.UNBOX.createNode(); CallTarget unboxTarget = Truffle.getRuntime().createCallTarget(new TemporaryRoot(unbox, tret)); Object unboxResult = unboxTarget.call(frame); return unboxResult; } else { try { Node isNull = Message.IS_NULL.createNode(); CallTarget isNullTarget = Truffle.getRuntime().createCallTarget(new TemporaryRoot(isNull, tret)); Object isNullResult = isNullTarget.call(frame); if (Boolean.TRUE.equals(isNullResult)) { return null; } } catch (IllegalArgumentException ex) { // fallthrough } } } return ret; } private static class TemporaryRoot extends RootNode { @Child private Node foreignAccess; private final TruffleObject function; private final Object[] args; public TemporaryRoot(Node foreignAccess, TruffleObject function, Object... args) { this.foreignAccess = foreignAccess; this.function = function; this.args = args; } @Override public Object execute(VirtualFrame frame) { return ForeignAccess.execute(foreignAccess, frame, function, args); } } }