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 2006 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 6402516
27 * @summary need Trees.getScope(TreePath)
28 * @build Checker CheckClass
29 * @run main CheckClass
30 */
32 import java.util.*;
33 import com.sun.source.tree.*;
34 import javax.lang.model.element.*;
35 import javax.lang.model.util.*;
37 /*
38 * Check the enclosing class of a scope against the contents of string literals.
39 */
40 public class CheckClass extends Checker {
41 public static void main(String... args) throws Exception {
42 Checker chk = new CheckClass();
43 chk.check("TestClass.java");
44 }
46 @Override
47 protected boolean checkLocal(Scope s, String ref) {
48 //System.err.println("checkLocal: " + s + " " + ref + " " + s.getEnclosingClass());
49 TypeElement te = s.getEnclosingClass();
50 boolean ok;
51 if (te == null)
52 ok = ref.equals("0");
53 else {
54 CharSequence name = te.getQualifiedName();
55 ok = ref.equals(name == null || name.length() == 0 ? "-" : name.toString());
56 }
57 if (!ok)
58 error(s, ref, "bad enclosing class found: " + te);
59 return ok;
60 }
61 }