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comparison graal/com.oracle.truffle.api.interop/src/com/oracle/truffle/api/interop/ForeignAccessArguments.java @ 21770:c76742cc2c6f

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Polishing inter-operability APIs: Exposing only Message, TruffleObject and ForeignAccess-related classes.
author Jaroslav Tulach <jaroslav.tulach@oracle.com>
date Mon, 08 Jun 2015 04:50:13 +0200
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21769:b6309a7d5a44 21770:c76742cc2c6f
1 /*
2 * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25 package com.oracle.truffle.api.interop;
26
27 final class ForeignAccessArguments {
28 static final Object[] EMPTY_ARGUMENTS_ARRAY = new Object[0];
29 static final int RECEIVER_INDEX = 0;
30 static final int RUNTIME_ARGUMENT_COUNT = 1;
31
32 static Object[] create(Object receiver, Object... arguments) {
33 if (arguments.length == 0) {
34 return new Object[]{receiver};
35 }
36 Object[] objectArguments = new Object[RUNTIME_ARGUMENT_COUNT + arguments.length];
37 objectArguments[RECEIVER_INDEX] = receiver;
38 arraycopy(arguments, 0, objectArguments, RUNTIME_ARGUMENT_COUNT, arguments.length);
39 return objectArguments;
40 }
41
42 private static void arraycopy(Object[] src, int srcPos, Object[] dest, int destPos, int length) {
43 for (int i = 0; i < length; i++) {
44 dest[destPos + i] = src[srcPos + i];
45 }
46 }
47
48 }