1 /*
   2  * Copyright (c) 2016, 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 package jdk.nashorn.api.tree;
  26 
  27 import jdk.nashorn.internal.ir.Expression;
  28 import jdk.nashorn.internal.ir.UnaryNode;
  29 import jdk.nashorn.internal.parser.TokenType;
  30 
  31 final class YieldTreeImpl extends ExpressionTreeImpl
  32         implements YieldTree {
  33 
  34     private final ExpressionTree expr;
  35 
  36     YieldTreeImpl(final Expression exprNode, final ExpressionTree expr) {
  37         super(exprNode);
  38         this.expr = expr;
  39     }
  40 
  41     @Override
  42     public Kind getKind() {
  43         return Kind.YIELD;
  44     }
  45 
  46     @Override
  47     public ExpressionTree getExpression() {
  48         return expr;
  49     }
  50 
  51     @Override
  52     public boolean isStar() {
  53         return ((UnaryNode) node).isTokenType(TokenType.YIELD_STAR);
  54     }
  55 
  56     @Override
  57     public <R,D> R accept(final TreeVisitor<R,D> visitor, final D data) {
  58         return visitor.visitYield(this, data);
  59     }
  60 }