1 /*
   2  * Copyright (c) 2015, 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.api.tree;
  27 
  28 import jdk.nashorn.internal.ir.IfNode;
  29 
  30 final class IfTreeImpl extends StatementTreeImpl implements IfTree {
  31     private final ExpressionTree cond;
  32     private final StatementTree thenStat;
  33     private final StatementTree elseStat;
  34     IfTreeImpl(final IfNode node, final ExpressionTree cond,
  35             final StatementTree thenStat, final StatementTree elseStat) {
  36         super(node);
  37         this.cond = cond;
  38         this.thenStat = thenStat;
  39         this.elseStat = elseStat;
  40     }
  41     
  42     @Override
  43     public Kind getKind() {
  44         return Kind.IF;
  45     }
  46     
  47     @Override
  48     public ExpressionTree getCondition() {
  49         return cond;
  50     }
  51     
  52     @Override
  53     public StatementTree getThenStatement() {
  54         return thenStat;
  55     }
  56     
  57     /**
  58      * @return null if this if statement has no else branch.
  59      */
  60     @Override
  61     public StatementTree getElseStatement() {
  62         return elseStat;
  63     }
  64     
  65     @Override
  66     public <R,D> R accept(TreeVisitor<R,D> visitor, D data) {
  67         return visitor.visitIf(this, data);
  68     }
  69 }