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/*
* Copyright (c) 2010, 2013, 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 jdk.nashorn.internal.ir;
import jdk.nashorn.internal.ir.visitor.NodeVisitor;
/**
* Interface for nodes that can be part of the lexical context.
* @see LexicalContext
*/
public interface LexicalContextNode {
/**
* Accept function for the node given a lexical context. It must be prepared
* to replace itself if present in the lexical context
*
* @param lc lexical context
* @param visitor node visitor
*
* @return new node or same node depending on state change
*/
Node accept(final LexicalContext lc, final NodeVisitor<? extends LexicalContext> visitor);
// Would be a default method on Java 8
static class Acceptor {
static Node accept(LexicalContextNode node, final NodeVisitor<? extends LexicalContext> visitor) {
final LexicalContext lc = visitor.getLexicalContext();
lc.push(node);
final LexicalContextNode newNode = (LexicalContextNode)node.accept(lc, visitor);
return (Node)lc.pop(newNode);
}
}
}
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