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Truffle is a multi-language framework for executing dynamic languages
that achieves high performance when combined with Graal.
/*
* Copyright (c) 2012, 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. 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.dsl;
import java.lang.annotation.ElementType;
import java.lang.annotation.Repeatable;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
import com.oracle.truffle.api.nodes.Node;
/**
* A {@link NodeChild} element defines an executable child for the enclosing {@link Node}. A
* {@link Node} contains multiple {@link NodeChildren} specified in linear execution order.
*
* @since 0.8 or earlier
*/
@Retention(RetentionPolicy.CLASS)
@Target({ElementType.TYPE})
@Repeatable(NodeChildren.class)
public @interface NodeChild {
/** @since 0.8 or earlier */
String value() default "";
/** @since 0.8 or earlier */
Class> type() default Node.class;
/**
* The {@link #executeWith()} property allows a node to pass the result of one child's
* executable as an input to another child's executable. These referenced children must be
* defined before the current node in the execution order. The current node {@link #type()}
* attribute must be set to a {@link Node} which supports the evaluated execution with the
* number of {@link #executeWith()} arguments that are defined. For example if this child is
* executed with one argument, the {@link #type()} attribute must define a node which publicly
* declares a method with the signature Object execute*(VirtualFrame, Object)
.
*
* @since 0.8 or earlier
*/
String[] executeWith() default {};
}
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