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 getTypeDeclaration on classes that are
39 * not already loaded.
40 */
41 public class TestGetTypeDeclarationApf 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 TestGetTypeDeclarationAp(env);
61 }
63 private static class TestGetTypeDeclarationAp implements AnnotationProcessor {
64 private final AnnotationProcessorEnvironment env;
65 TestGetTypeDeclarationAp(AnnotationProcessorEnvironment env) {
66 this.env = env;
67 }
69 public void process() {
70 String classNames[] = {
71 "java.lang.String", // should be already available
72 "java.lang.Thread.State", // should be already available
73 "java.util.Collection",
74 "java.util.Map.Entry",
75 "foo.bar.Baz.Xxyzzy.Wombat",
76 "foo.bar.Baz.Xxyzzy",
77 "foo.bar.Baz",
78 "foo.bar.Quux",
79 "foo.bar.Quux.Xxyzzy",
80 "foo.bar.Quux.Xxyzzy.Wombat",
81 "NestedClassAnnotations",
82 "NestedClassAnnotations.NestedClass",
83 };
85 for(String className: classNames) {
86 TypeDeclaration t = env.getTypeDeclaration(className);
87 if (t == null)
88 throw new RuntimeException("No declaration found for " + className);
89 if (! t.getQualifiedName().equals(className))
90 throw new RuntimeException("Class with wrong name found for " + className);
91 }
93 // Test obscuring behavior; i.e. nested class C1 in class
94 // p1 where p1 is member of package p2 should be favored
95 // over class C1 in package p1.p2.
96 String nonuniqueCanonicalNames[] = {
97 "p1.p2.C1",
98 };
99 for(String className: nonuniqueCanonicalNames) {
100 ClassDeclaration c1 = (ClassDeclaration) env.getTypeDeclaration(className);
101 ClassDeclaration c2 = (ClassDeclaration) c1.getDeclaringType();
102 PackageDeclaration p = env.getPackage("p1");
104 if (!p.equals(c1.getPackage()) ||
105 c2 == null ||
106 !"C1".equals(c1.getSimpleName())) {
107 throw new RuntimeException("Bad class declaration");
108 }
109 }
111 String notClassNames[] = {
112 "",
113 "XXYZZY",
114 "java",
115 "java.lang",
116 "java.lang.Bogogogous",
117 "1",
118 "1.2",
119 "3.14159",
120 "To be or not to be is a tautology",
121 "1+2=3",
122 "foo+.x",
123 "foo+x",
124 "+",
125 "?",
126 "***",
127 "java.*",
128 };
130 for(String notClassName: notClassNames) {
131 Declaration t = env.getTypeDeclaration(notClassName);
132 if (t != null) {
133 System.err.println("Unexpected declaration:" + t);
134 throw new RuntimeException("Declaration found for ``" + notClassName + "''.");
135 }
136 }
138 }
139 }
140 }