Mercurial > hg > graal-jvmci-8
diff graal/com.oracle.truffle.api/src/com/oracle/truffle/api/Arguments.java @ 7267:a4b84ba6dc2e
Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
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date | Tue, 18 Dec 2012 15:33:55 +0100 |
parents | |
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 15:33:55 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() { + } +}