T7068451.java revision 2674:e284f560acf6
1/* 2 * Copyright (c) 2011, 2014, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24/* 25 * @test 26 * @bug 7068451 27 * @summary Regression: javac compiles fixed sources against previous, 28 * not current, version of generated sources 29 */ 30 31import java.io.File; 32import java.io.FileNotFoundException; 33import java.io.FileWriter; 34import java.io.IOException; 35import java.io.Writer; 36import java.nio.file.NoSuchFileException; 37import java.util.Arrays; 38import java.util.Collections; 39import java.util.List; 40import java.util.Set; 41import javax.annotation.processing.AbstractProcessor; 42import javax.annotation.processing.Filer; 43import javax.annotation.processing.Messager; 44import javax.annotation.processing.RoundEnvironment; 45import javax.annotation.processing.SupportedAnnotationTypes; 46import javax.lang.model.SourceVersion; 47import javax.lang.model.element.TypeElement; 48import javax.tools.Diagnostic.Kind; 49import javax.tools.JavaCompiler; 50import javax.tools.JavaCompiler.CompilationTask; 51import javax.tools.StandardLocation; 52import javax.tools.ToolProvider; 53 54public class T7068451 { 55 public static void main(String[] args) throws Exception { 56 new T7068451().run(); 57 } 58 59 void run() throws Exception { 60 JavaCompiler compiler = ToolProvider.getSystemJavaCompiler(); 61 System.err.println("using " + compiler.getClass() + " from " + compiler.getClass().getProtectionDomain().getCodeSource()); 62 63 File tmp = new File("tmp"); 64 tmp.mkdir(); 65 for (File f: tmp.listFiles()) 66 f.delete(); 67 68 File input = writeFile(tmp, "X.java", "package p; class X { { p.C.first(); } }"); 69 70 List<String> opts = Arrays.asList( 71 "-s", tmp.getPath(), 72 "-d", tmp.getPath(), 73 "-XprintRounds"); 74 75 System.err.println(); 76 System.err.println("FIRST compilation"); 77 System.err.println(); 78 79 CompilationTask task = compiler.getTask(null, null, null, opts, null, 80 compiler.getStandardFileManager(null, null, null).getJavaFileObjects(input)); 81 task.setProcessors(Collections.singleton(new Proc("first"))); 82 check("compilation", task.call()); 83 84 writeFile(tmp, "X.java", "package p; class X { { p.C.second(); } }"); 85 86 //Thread.sleep(2000); 87 88 System.err.println(); 89 System.err.println("SECOND compilation"); 90 System.err.println(); 91 92 task = compiler.getTask(null, null, null, opts, null, 93 compiler.getStandardFileManager(null, null, null).getJavaFileObjects(input)); 94 task.setProcessors(Collections.singleton(new Proc("second"))); 95 check("compilation", task.call()); 96 97 //Thread.sleep(2000); 98 99 System.err.println(); 100 System.err.println("SECOND compilation, REPEATED"); 101 System.err.println(); 102 103 task = compiler.getTask(null, null, null, opts, null, 104 compiler.getStandardFileManager(null, null, null).getJavaFileObjects(input)); 105 task.setProcessors(Collections.singleton(new Proc("second"))); 106 check("compilation", task.call()); 107 } 108 109 void check(String msg, boolean ok) { 110 System.err.println(msg + ": " + (ok ? "ok" : "failed")); 111 if (!ok) 112 throw new AssertionError(msg); 113 } 114 115 static File writeFile(File base, String path, String body) throws IOException { 116 File f = new File(base, path); 117 FileWriter out = new FileWriter(f); 118 out.write(body); 119 out.close(); 120 System.err.println("wrote " + path + ": " + body); 121 return f; 122 } 123 124 @SupportedAnnotationTypes("*") 125 private static class Proc extends AbstractProcessor { 126 final String m; 127 Proc(String m) { 128 this.m = m; 129 } 130 131 int count; 132 @Override public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) { 133 if (roundEnv.processingOver() || count++ > 0) { 134 return false; 135 } 136 137 Filer filer = processingEnv.getFiler(); 138 Messager messager = processingEnv.getMessager(); 139 140 System.err.println("running Proc"); 141 try { 142 int len = filer.getResource(StandardLocation.SOURCE_OUTPUT, "p", "C.java").getCharContent(false).length(); 143 messager.printMessage(Kind.NOTE, "C.java: found previous content of length " + len); 144 } catch (FileNotFoundException | NoSuchFileException x) { 145 messager.printMessage(Kind.NOTE, "C.java: not previously there"); 146 } catch (IOException x) { 147 messager.printMessage(Kind.ERROR, "while reading: " + x); 148 } 149 150 try { 151 String body = "package p; public class C { public static void " + m + "() {} }"; 152 Writer w = filer.createSourceFile("p.C").openWriter(); 153 w.write(body); 154 w.close(); 155 messager.printMessage(Kind.NOTE, "C.java: wrote new content: " + body); 156 } catch (IOException x) { 157 messager.printMessage(Kind.ERROR, "while writing: " + x); 158 } 159 160 return true; 161 } 162 163 @Override 164 public SourceVersion getSupportedSourceVersion() { 165 return SourceVersion.latest(); 166 } 167 } 168} 169 170