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
duke@1 | 1 | /* |
duke@1 | 2 | * Copyright 2004-2007 Sun Microsystems, Inc. All Rights Reserved. |
duke@1 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
duke@1 | 4 | * |
duke@1 | 5 | * This code is free software; you can redistribute it and/or modify it |
duke@1 | 6 | * under the terms of the GNU General Public License version 2 only, as |
duke@1 | 7 | * published by the Free Software Foundation. |
duke@1 | 8 | * |
duke@1 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
duke@1 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
duke@1 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
duke@1 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
duke@1 | 13 | * accompanied this code). |
duke@1 | 14 | * |
duke@1 | 15 | * You should have received a copy of the GNU General Public License version |
duke@1 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
duke@1 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
duke@1 | 18 | * |
duke@1 | 19 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
duke@1 | 20 | * CA 95054 USA or visit www.sun.com if you need additional information or |
duke@1 | 21 | * have any questions. |
duke@1 | 22 | */ |
duke@1 | 23 | |
duke@1 | 24 | |
duke@1 | 25 | import com.sun.mirror.apt.*; |
duke@1 | 26 | import com.sun.mirror.declaration.*; |
duke@1 | 27 | import com.sun.mirror.type.*; |
duke@1 | 28 | import com.sun.mirror.util.*; |
duke@1 | 29 | |
duke@1 | 30 | import java.util.Collection; |
duke@1 | 31 | import java.util.Set; |
duke@1 | 32 | import java.util.Arrays; |
duke@1 | 33 | |
duke@1 | 34 | import static java.util.Collections.*; |
duke@1 | 35 | import static com.sun.mirror.util.DeclarationVisitors.*; |
duke@1 | 36 | |
duke@1 | 37 | /* |
duke@1 | 38 | * This class is used to test getPackage on classes that are |
duke@1 | 39 | * not already loaded. |
duke@1 | 40 | */ |
duke@1 | 41 | public class TestGetPackageApf implements AnnotationProcessorFactory { |
duke@1 | 42 | // Process any set of annotations |
duke@1 | 43 | private static final Collection<String> supportedAnnotations |
duke@1 | 44 | = unmodifiableCollection(Arrays.asList("*")); |
duke@1 | 45 | |
duke@1 | 46 | // No supported options |
duke@1 | 47 | private static final Collection<String> supportedOptions = emptySet(); |
duke@1 | 48 | |
duke@1 | 49 | public Collection<String> supportedAnnotationTypes() { |
duke@1 | 50 | return supportedAnnotations; |
duke@1 | 51 | } |
duke@1 | 52 | |
duke@1 | 53 | public Collection<String> supportedOptions() { |
duke@1 | 54 | return supportedOptions; |
duke@1 | 55 | } |
duke@1 | 56 | |
duke@1 | 57 | public AnnotationProcessor getProcessorFor( |
duke@1 | 58 | Set<AnnotationTypeDeclaration> atds, |
duke@1 | 59 | AnnotationProcessorEnvironment env) { |
duke@1 | 60 | return new TestGetPackageAp(env); |
duke@1 | 61 | } |
duke@1 | 62 | |
duke@1 | 63 | private static class TestGetPackageAp implements AnnotationProcessor { |
duke@1 | 64 | private final AnnotationProcessorEnvironment env; |
duke@1 | 65 | TestGetPackageAp(AnnotationProcessorEnvironment env) { |
duke@1 | 66 | this.env = env; |
duke@1 | 67 | } |
duke@1 | 68 | |
duke@1 | 69 | public void process() { |
duke@1 | 70 | boolean failed = false; |
duke@1 | 71 | String packageNames[] = { |
duke@1 | 72 | "", // unnamed package |
duke@1 | 73 | "java.lang.annotation", |
duke@1 | 74 | "java.lang", |
duke@1 | 75 | "java.util", |
duke@1 | 76 | "java.awt.image.renderable", |
duke@1 | 77 | "foo.bar", |
duke@1 | 78 | "foo", |
duke@1 | 79 | "p1", |
duke@1 | 80 | // "p1.p2", // class p1.p2 obscures package p1.p2 |
duke@1 | 81 | }; |
duke@1 | 82 | |
duke@1 | 83 | for(String packageName: packageNames) { |
duke@1 | 84 | PackageDeclaration p = env.getPackage(packageName); |
duke@1 | 85 | if (p == null) { |
duke@1 | 86 | failed = true; |
duke@1 | 87 | System.err.println("ERROR: No declaration found for ``" + packageName + "''."); |
duke@1 | 88 | } |
duke@1 | 89 | else if (!packageName.equals(p.getQualifiedName())) { |
duke@1 | 90 | failed = true; |
duke@1 | 91 | System.err.println("ERROR: Unexpected package name; expected " + packageName + |
duke@1 | 92 | "got " + p.getQualifiedName()); |
duke@1 | 93 | } |
duke@1 | 94 | } |
duke@1 | 95 | |
duke@1 | 96 | String notPackageNames[] = { |
duke@1 | 97 | "XXYZZY", |
duke@1 | 98 | "java.lang.String", |
duke@1 | 99 | "1", |
duke@1 | 100 | "1.2", |
duke@1 | 101 | "3.14159", |
duke@1 | 102 | "To be or not to be is a tautology", |
duke@1 | 103 | "1+2=3", |
duke@1 | 104 | }; |
duke@1 | 105 | |
duke@1 | 106 | for(String notPackageName: notPackageNames) { |
duke@1 | 107 | PackageDeclaration p = env.getPackage(notPackageName); |
duke@1 | 108 | if (p != null) { |
duke@1 | 109 | failed = true; |
duke@1 | 110 | System.err.println("ERROR: Unexpected declaration: ``" + p + "''."); |
duke@1 | 111 | } |
duke@1 | 112 | } |
duke@1 | 113 | |
duke@1 | 114 | if (failed) |
duke@1 | 115 | throw new RuntimeException("Errors found testing getPackage."); |
duke@1 | 116 | } |
duke@1 | 117 | } |
duke@1 | 118 | } |