Thu, 30 Jul 2009 10:29:53 +0100
6827648: Extremely slow compilation time for visitor pattern code + generics
Summary: Javac unnecessarily recomputates type-substitutions multiple times
Reviewed-by: jjg
1 /*
2 * Copyright 2002-2003 Sun Microsystems, Inc. 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.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
20 * CA 95054 USA or visit www.sun.com if you need additional information or
21 * have any questions.
22 */
24 /**
25 * @test
26 * @bug 4635044 4787017
27 * @summary Invalid error when implicitly referencing enclosing type
28 *
29 * @compile WhichImplicitThis1.java
30 * @run main WhichImplicitThis1
31 */
33 /** Check that non-inheritance (private) prevents enclosing class selection. */
34 public class WhichImplicitThis1 {
35 boolean isMiddle() { return false; }
36 private class Middle extends WhichImplicitThis1 {
37 boolean isMiddle() { return true; }
38 boolean enclIsMiddle() { return WhichImplicitThis1.this.isMiddle(); }
39 class Inner {}
40 boolean check() {
41 return /*?.this.*/new WhichImplicitThis1.Middle().enclIsMiddle();
42 }
43 }
44 public static void main(String[] args) {
45 WhichImplicitThis1 t = new WhichImplicitThis1();
46 Middle m = t.new Middle();
47 if (!m.check()) throw new Error();
48 }
49 }