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.BinaryNode;

    29 

    30 final class CompoundAssignmentTreeImpl extends ExpressionTreeImpl implements CompoundAssignmentTree {

    31 

    32     private final ExpressionTree var, expr;

    33     private final Kind kind;

    34 

    35     CompoundAssignmentTreeImpl(final BinaryNode node, final ExpressionTree left, final ExpressionTree right) {

    36         super(node);

    37         assert node.isAssignment() : "not an assignment node";

    38         this.var = left;

    39         this.expr = right;

    40         this.kind = getOperator(node.tokenType());

    41         assert kind != Tree.Kind.ASSIGNMENT : "compound assignment expected";

    42     }

    43 

    44     @Override

    45     public Kind getKind() {

    46         return kind;

    47     }

    48 

    49     @Override

    50     public ExpressionTree getVariable() {

    51         return var;

    52     }

    53 

    54     @Override

    55     public ExpressionTree getExpression() {

    56         return expr;

    57     }

    58 

    59     @Override

    60     public <R,D> R accept(final TreeVisitor<R,D> visitor, final D data) {

    61         return visitor.visitCompoundAssignment(this, data);

    62     }

    63 }