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 2004-2007 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 */
25 import com.sun.mirror.apt.*;
26 import com.sun.mirror.declaration.*;
27 import com.sun.mirror.type.*;
28 import com.sun.mirror.util.*;
30 import java.util.Collection;
31 import java.util.Set;
32 import java.util.Arrays;
34 import static java.util.Collections.*;
35 import static com.sun.mirror.util.DeclarationVisitors.*;
37 /*
38 * This class is used to test getPackage on classes that are
39 * not already loaded.
40 */
41 public class TestGetPackageApf implements AnnotationProcessorFactory {
42 // Process any set of annotations
43 private static final Collection<String> supportedAnnotations
44 = unmodifiableCollection(Arrays.asList("*"));
46 // No supported options
47 private static final Collection<String> supportedOptions = emptySet();
49 public Collection<String> supportedAnnotationTypes() {
50 return supportedAnnotations;
51 }
53 public Collection<String> supportedOptions() {
54 return supportedOptions;
55 }
57 public AnnotationProcessor getProcessorFor(
58 Set<AnnotationTypeDeclaration> atds,
59 AnnotationProcessorEnvironment env) {
60 return new TestGetPackageAp(env);
61 }
63 private static class TestGetPackageAp implements AnnotationProcessor {
64 private final AnnotationProcessorEnvironment env;
65 TestGetPackageAp(AnnotationProcessorEnvironment env) {
66 this.env = env;
67 }
69 public void process() {
70 boolean failed = false;
71 String packageNames[] = {
72 "", // unnamed package
73 "java.lang.annotation",
74 "java.lang",
75 "java.util",
76 "java.awt.image.renderable",
77 "foo.bar",
78 "foo",
79 "p1",
80 // "p1.p2", // class p1.p2 obscures package p1.p2
81 };
83 for(String packageName: packageNames) {
84 PackageDeclaration p = env.getPackage(packageName);
85 if (p == null) {
86 failed = true;
87 System.err.println("ERROR: No declaration found for ``" + packageName + "''.");
88 }
89 else if (!packageName.equals(p.getQualifiedName())) {
90 failed = true;
91 System.err.println("ERROR: Unexpected package name; expected " + packageName +
92 "got " + p.getQualifiedName());
93 }
94 }
96 String notPackageNames[] = {
97 "XXYZZY",
98 "java.lang.String",
99 "1",
100 "1.2",
101 "3.14159",
102 "To be or not to be is a tautology",
103 "1+2=3",
104 };
106 for(String notPackageName: notPackageNames) {
107 PackageDeclaration p = env.getPackage(notPackageName);
108 if (p != null) {
109 failed = true;
110 System.err.println("ERROR: Unexpected declaration: ``" + p + "''.");
111 }
112 }
114 if (failed)
115 throw new RuntimeException("Errors found testing getPackage.");
116 }
117 }
118 }