1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
|
/*
* Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package jdk.nashorn.internal.ir;
import jdk.nashorn.internal.ir.visitor.NodeVisitor;
/**
* Synthetic AST node that represents return from a split fragment of a split function for control flow reasons (break
* or continue into a target outside the current fragment). It has no JavaScript source representation and only occurs
* in synthetic functions created by the split-into-functions transformation. It is different from a return node in
* that the return value is irrelevant, and doesn't affect the function's return type calculation.
*/
public final class SplitReturn extends Statement {
private static final long serialVersionUID = 1L;
/** The sole instance of this AST node. */
public static final SplitReturn INSTANCE = new SplitReturn();
private SplitReturn() {
super(NO_LINE_NUMBER, NO_TOKEN, NO_FINISH);
}
@Override
public boolean isTerminal() {
return true;
}
@Override
public Node accept(final NodeVisitor<? extends LexicalContext> visitor) {
return visitor.enterSplitReturn(this) ? visitor.leaveSplitReturn(this) : this;
}
@Override
public void toString(final StringBuilder sb, final boolean printType) {
sb.append(":splitreturn;");
}
private Object readResolve() {
return INSTANCE;
}
}
|
