1 /*
   2  * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package jdk.nashorn.internal.ir;
  27 
  28 import jdk.nashorn.internal.ir.annotations.Immutable;
  29 import jdk.nashorn.internal.ir.visitor.NodeVisitor;
  30 
  31 /**
  32  * IR representation for a debugger statement.
  33  */
  34 @Immutable
  35 public final class DebuggerNode extends Statement {
  36     private static final long serialVersionUID = 1L;
  37 
  38     /**
  39      * Constructor
  40      *
  41      * @param lineNumber line number
  42      * @param token      token
  43      * @param finish     finish
  44      */
  45     public DebuggerNode(final int lineNumber, final long token, final int finish) {
  46         super(lineNumber, token, finish);
  47     }
  48 
  49     @Override
  50     public Node accept(final NodeVisitor<? extends LexicalContext> visitor) {
  51         if (visitor.enterDebuggerNode(this)) {
  52             return visitor.leaveDebuggerNode(this);
  53         }
  54 
  55         return this;
  56     }
  57 
  58     @Override
  59     public void toString(final StringBuilder sb, final boolean printType) {
  60         sb.append("debugger");
  61     }
  62 }
  63