Mercurial > hg > graal-jvmci-8
diff graal/com.oracle.truffle.api.interop/src/com/oracle/truffle/api/interop/ForeignAccessArguments.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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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/graal/com.oracle.truffle.api.interop/src/com/oracle/truffle/api/interop/ForeignAccessArguments.java Mon Jun 08 04:50:13 2015 +0200 @@ -0,0 +1,48 @@ +/* + * Copyright (c) 2014, 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; + +final class ForeignAccessArguments { + static final Object[] EMPTY_ARGUMENTS_ARRAY = new Object[0]; + static final int RECEIVER_INDEX = 0; + static final int RUNTIME_ARGUMENT_COUNT = 1; + + static Object[] create(Object receiver, Object... arguments) { + if (arguments.length == 0) { + return new Object[]{receiver}; + } + Object[] objectArguments = new Object[RUNTIME_ARGUMENT_COUNT + arguments.length]; + objectArguments[RECEIVER_INDEX] = receiver; + arraycopy(arguments, 0, objectArguments, RUNTIME_ARGUMENT_COUNT, arguments.length); + return objectArguments; + } + + private static void arraycopy(Object[] src, int srcPos, Object[] dest, int destPos, int length) { + for (int i = 0; i < length; i++) { + dest[destPos + i] = src[srcPos + i]; + } + } + +}