IfTreeImpl.java revision 1304:4da1c371efcb 
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
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24 */
25
26package jdk.nashorn.api.tree;
27
28import jdk.nashorn.internal.ir.IfNode;
29
30final 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(final TreeVisitor<R,D> visitor, final D data) {
67        return visitor.visitIf(this, data);
68    }
69}
70