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
26package jdk.nashorn.internal.ir;
27
28import jdk.nashorn.internal.codegen.types.Type;
29import jdk.nashorn.internal.ir.annotations.Immutable;
30import jdk.nashorn.internal.ir.visitor.NodeVisitor;
31
32/**
33 * IR representation for an error expression.
34 */
35@Immutable
36public final class ErrorNode extends Expression {
37    private static final long serialVersionUID = 1L;
38
39    /**
40     * Constructor
41     *
42     * @param token      token
43     * @param finish     finish
44     */
45    public ErrorNode(final long token, final int finish) {
46        super(token, finish);
47    }
48
49    @Override
50    public Type getType() {
51        return Type.OBJECT;
52    }
53
54    @Override
55    public Node accept(final NodeVisitor<? extends LexicalContext> visitor) {
56        if (visitor.enterErrorNode(this)) {
57            return visitor.leaveErrorNode(this);
58        }
59
60        return this;
61    }
62
63    @Override
64    public void toString(final StringBuilder sb, final boolean printType) {
65        sb.append("<error>");
66    }
67}
68
69