Mercurial > hg > graal-compiler
diff graal/com.oracle.truffle.api/src/com/oracle/truffle/api/Arguments.java @ 7274:19f5c9b96fa7
Merge.
author | Doug Simon <doug.simon@oracle.com> |
---|---|
date | Tue, 18 Dec 2012 17:59:32 +0100 |
parents | a4b84ba6dc2e |
children | 5e3d1a68664e |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/graal/com.oracle.truffle.api/src/com/oracle/truffle/api/Arguments.java Tue Dec 18 17:59:32 2012 +0100 @@ -0,0 +1,46 @@ +/* + * Copyright (c) 2012, 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. + * + * 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; + +/** + * Base class for arguments passed to guest language methods via the + * {@link CallTarget#call(com.oracle.truffle.api.frame.PackedFrame, Arguments)} method. A guest language create a + * subclass with immutable fields representing the arguments passed to a guest language method. The {@link Arguments} + * object must be created immediately before a method call and it must not be stored in a field or cast to + * {@link java.lang.Object}. + */ +public class Arguments { + + /** + * Constant that can be used as an argument to + * {@link CallTarget#call(com.oracle.truffle.api.frame.PackedFrame, Arguments)} in case no arguments should be + * supplied. + */ + public static final Arguments EMPTY_ARGUMENTS = new Arguments(); + + /** + * Constructs an empty {@link Arguments} instance. Guest languages should create a subclass to specify their own arguments. + */ + protected Arguments() { + } +}