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 2006 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 | * @test |
duke@1 | 26 | * @bug 6439826 6411930 6380018 6392177 |
duke@1 | 27 | * @summary Exception issuing Diagnostic while processing generated errant code |
duke@1 | 28 | */ |
duke@1 | 29 | |
duke@1 | 30 | import java.io.*; |
duke@1 | 31 | import java.util.*; |
duke@1 | 32 | import javax.annotation.processing.*; |
duke@1 | 33 | import javax.lang.model.*; |
duke@1 | 34 | import javax.lang.model.element.*; |
duke@1 | 35 | import javax.tools.*; |
duke@1 | 36 | import com.sun.source.util.*; |
duke@1 | 37 | import com.sun.tools.javac.api.*; |
duke@1 | 38 | import static javax.lang.model.util.ElementFilter.*; |
duke@1 | 39 | |
duke@1 | 40 | |
duke@1 | 41 | @SupportedAnnotationTypes("*") |
jjg@287 | 42 | @SupportedSourceVersion(SourceVersion.RELEASE_7 ) |
duke@1 | 43 | public class T6439826 extends AbstractProcessor { |
duke@1 | 44 | public static void main(String... args) { |
duke@1 | 45 | String testSrc = System.getProperty("test.src", "."); |
duke@1 | 46 | String testClasses = System.getProperty("test.classes"); |
duke@1 | 47 | JavacTool tool = JavacTool.create(); |
duke@1 | 48 | MyDiagListener dl = new MyDiagListener(); |
duke@1 | 49 | StandardJavaFileManager fm = tool.getStandardFileManager(dl, null, null); |
duke@1 | 50 | Iterable<? extends JavaFileObject> files = |
duke@1 | 51 | fm.getJavaFileObjectsFromFiles(Arrays.asList(new File(testSrc, T6439826.class.getName()+".java"))); |
jjg@308 | 52 | Iterable<String> opts = Arrays.asList("-source","1.6", |
jjg@308 | 53 | "-proc:only", |
duke@1 | 54 | "-processor", "T6439826", |
duke@1 | 55 | "-processorpath", testClasses); |
duke@1 | 56 | StringWriter out = new StringWriter(); |
duke@1 | 57 | JavacTask task = tool.getTask(out, fm, dl, opts, null, files); |
duke@1 | 58 | task.call(); |
duke@1 | 59 | String s = out.toString(); |
duke@1 | 60 | System.err.print(s); |
duke@1 | 61 | // Expect the following 2 diagnostics, and no output to log |
duke@1 | 62 | // Foo.java:1: illegal character: \35 |
duke@1 | 63 | // Foo.java:1: reached end of file while parsing |
duke@1 | 64 | System.err.println(dl.count + " diagnostics; " + s.length() + " characters"); |
duke@1 | 65 | if (dl.count != 2 || s.length() != 0) |
duke@1 | 66 | throw new AssertionError("unexpected output from compiler"); |
duke@1 | 67 | } |
duke@1 | 68 | |
duke@1 | 69 | public boolean process(Set<? extends TypeElement> annotations, |
duke@1 | 70 | RoundEnvironment roundEnv) { |
duke@1 | 71 | Set<? extends TypeElement> elems = typesIn(roundEnv.getRootElements()); |
duke@1 | 72 | for (TypeElement e: elems) { |
duke@1 | 73 | if (e.getSimpleName().toString().equals(T6439826.class.getName())) |
duke@1 | 74 | writeBadFile(); |
duke@1 | 75 | } |
duke@1 | 76 | return false; |
duke@1 | 77 | } |
duke@1 | 78 | |
duke@1 | 79 | private void writeBadFile() { |
duke@1 | 80 | Filer filer = processingEnv.getFiler(); |
duke@1 | 81 | Messager messager = processingEnv.getMessager(); |
duke@1 | 82 | try { |
duke@1 | 83 | Writer out = filer.createSourceFile("Foo").openWriter(); |
duke@1 | 84 | out.write("class Foo #"); // write a file that generates a scanner error |
duke@1 | 85 | out.close(); |
duke@1 | 86 | } catch (IOException e) { |
duke@1 | 87 | messager.printMessage(Diagnostic.Kind.ERROR, e.toString()); |
duke@1 | 88 | } |
duke@1 | 89 | } |
duke@1 | 90 | |
duke@1 | 91 | static class MyDiagListener implements DiagnosticListener { |
duke@1 | 92 | public void report(Diagnostic d) { |
duke@1 | 93 | System.err.println(d); |
duke@1 | 94 | count++; |
duke@1 | 95 | } |
duke@1 | 96 | |
duke@1 | 97 | public int count; |
duke@1 | 98 | } |
duke@1 | 99 | } |