1/* 2 * Copyright (c) 2011, 2015, 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 7017664 27 * @summary Basher for CompoundScopes 28 * @modules jdk.compiler/com.sun.tools.javac.code 29 * jdk.compiler/com.sun.tools.javac.file 30 * jdk.compiler/com.sun.tools.javac.util 31 */ 32 33import com.sun.source.util.JavacTask; 34import com.sun.tools.javac.code.Symbol; 35import com.sun.tools.javac.code.Types; 36import com.sun.tools.javac.file.JavacFileManager; 37import com.sun.tools.javac.util.Context; 38 39import com.sun.tools.javac.code.Symbol.*; 40 41import java.io.IOException; 42import java.net.URI; 43import java.util.Arrays; 44import java.util.List; 45import javax.lang.model.element.Element; 46import javax.tools.JavaCompiler; 47import javax.tools.JavaFileObject; 48import javax.tools.SimpleJavaFileObject; 49import javax.tools.ToolProvider; 50 51import static javax.tools.JavaFileObject.Kind; 52 53public class ImplementationCacheTest { 54 55 static class SourceFile extends SimpleJavaFileObject { 56 57 final String source = "interface I { void m(); }\n" + 58 "class A implements I { public void m() {} }\n" + 59 "class B extends A { }\n"; 60 61 public SourceFile() { 62 super(URI.create("test.java"), Kind.SOURCE); 63 } 64 65 public CharSequence getCharContent(boolean ignoreEncodingErrors) { 66 return source; 67 } 68 } 69 70 public static void main(String[] args) throws IOException { 71 List<? extends JavaFileObject> files = Arrays.asList(new SourceFile()); 72 JavaCompiler tool = ToolProvider.getSystemJavaCompiler(); 73 JavacTask ct = (JavacTask)tool.getTask(null, null, null, null, null, files); 74 Context ctx = new Context(); 75 JavacFileManager.preRegister(ctx); 76 checkImplementationCache(ct.analyze(), Types.instance(ctx)); 77 } 78 79 static void checkImplementationCache(Iterable<? extends Element> elements, Types types) { 80 if (types == null) { 81 throw new AssertionError("problems initializing Types"); 82 } 83 84 Symbol a = null; 85 Symbol b = null; 86 Symbol i = null; 87 88 for (Element e : elements) { 89 if (e.getSimpleName().contentEquals("A")) { 90 a = (Symbol)e; 91 } else if (e.getSimpleName().contentEquals("B")) { 92 b = (Symbol)e; 93 } else if (e.getSimpleName().contentEquals("I")) { 94 i = (Symbol)e; 95 } 96 } 97 98 if (a == null || b == null || i == null) { 99 throw new AssertionError("missing class"); 100 } 101 102 MethodSymbol I_m = null; 103 104 for (Symbol sym : i.members().getSymbols()) { 105 if (sym.name.contentEquals("m")) { 106 I_m = (MethodSymbol)sym; 107 } 108 } 109 110 if (I_m == null) { 111 throw new AssertionError("missing method m() in scope of interface I"); 112 } 113 114 Symbol impl = I_m.implementation((TypeSymbol)b, types, true); 115 116 if (impl == null || impl.owner != a) { 117 throw new AssertionError("wrong implementation for m() in B"); 118 } 119 120 b.members().enter(I_m.clone(b)); 121 122 Symbol newImpl = I_m.implementation((TypeSymbol)b, types, true); 123 124 if (newImpl == impl) { 125 throw new AssertionError("stale implementation for m() in B"); 126 } 127 128 if (newImpl == null || newImpl.owner != b) { 129 throw new AssertionError("wrong implementation for m() in B"); 130 } 131 } 132} 133