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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.annotations.Immutable;
import jdk.nashorn.internal.ir.visitor.NodeVisitor;
import jdk.nashorn.internal.parser.Token;
import jdk.nashorn.internal.runtime.Source;
/**
* IR Node representing a line number
*/
@Immutable
public final class LineNumberNode extends Node {
/** Line number */
private final int lineNumber;
/**
* Constructor
*
* @param source the source
* @param token token
* @param lineNumber the line number
*/
public LineNumberNode(final Source source, final long token, final int lineNumber) {
super(source, token, Token.descPosition(token));
this.lineNumber = lineNumber;
}
private LineNumberNode(final LineNumberNode lineNumberNode) {
super(lineNumberNode);
this.lineNumber = lineNumberNode.getLineNumber();
}
@Override
public Node accept(final NodeVisitor visitor) {
if (visitor.enterLineNumberNode(this)) {
return visitor.leaveLineNumberNode(this);
}
return this;
}
@Override
public void toString(final StringBuilder sb) {
sb.append("[|");
sb.append(lineNumber);
sb.append("|]");
}
@Override
public boolean isAtom() {
return true;
}
/**
* Get the line number
* @return line number
*/
public int getLineNumber() {
return lineNumber;
}
@Override
public boolean isDebug() {
return true;
}
}
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