Mon, 02 Sep 2013 22:38:36 +0100
8016177: structural most specific and stuckness
Reviewed-by: jjg, vromero
Contributed-by: maurizio.cimadamore@oracle.com
aoqi@0 | 1 | /* |
aoqi@0 | 2 | * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved. |
aoqi@0 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
aoqi@0 | 4 | * |
aoqi@0 | 5 | * This code is free software; you can redistribute it and/or modify it |
aoqi@0 | 6 | * under the terms of the GNU General Public License version 2 only, as |
aoqi@0 | 7 | * published by the Free Software Foundation. |
aoqi@0 | 8 | * |
aoqi@0 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
aoqi@0 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
aoqi@0 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
aoqi@0 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
aoqi@0 | 13 | * accompanied this code). |
aoqi@0 | 14 | * |
aoqi@0 | 15 | * You should have received a copy of the GNU General Public License version |
aoqi@0 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
aoqi@0 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
aoqi@0 | 18 | * |
aoqi@0 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
aoqi@0 | 20 | * or visit www.oracle.com if you need additional information or have any |
aoqi@0 | 21 | * questions. |
aoqi@0 | 22 | */ |
aoqi@0 | 23 | |
aoqi@0 | 24 | /* |
aoqi@0 | 25 | * @test |
aoqi@0 | 26 | * @bug 7017664 |
aoqi@0 | 27 | * @summary Basher for CompoundScopes |
aoqi@0 | 28 | */ |
aoqi@0 | 29 | |
aoqi@0 | 30 | import com.sun.source.util.JavacTask; |
aoqi@0 | 31 | import com.sun.tools.javac.code.Symbol; |
aoqi@0 | 32 | import com.sun.tools.javac.code.Types; |
aoqi@0 | 33 | import com.sun.tools.javac.file.JavacFileManager; |
aoqi@0 | 34 | import com.sun.tools.javac.util.Context; |
aoqi@0 | 35 | |
aoqi@0 | 36 | import com.sun.tools.javac.code.Symbol.*; |
aoqi@0 | 37 | |
aoqi@0 | 38 | import java.io.IOException; |
aoqi@0 | 39 | import java.net.URI; |
aoqi@0 | 40 | import java.util.Arrays; |
aoqi@0 | 41 | import java.util.List; |
aoqi@0 | 42 | import javax.lang.model.element.Element; |
aoqi@0 | 43 | import javax.tools.JavaCompiler; |
aoqi@0 | 44 | import javax.tools.JavaFileObject; |
aoqi@0 | 45 | import javax.tools.SimpleJavaFileObject; |
aoqi@0 | 46 | import javax.tools.ToolProvider; |
aoqi@0 | 47 | |
aoqi@0 | 48 | import static javax.tools.JavaFileObject.Kind; |
aoqi@0 | 49 | |
aoqi@0 | 50 | public class ImplementationCacheTest { |
aoqi@0 | 51 | |
aoqi@0 | 52 | static class SourceFile extends SimpleJavaFileObject { |
aoqi@0 | 53 | |
aoqi@0 | 54 | final String source = "interface I { void m(); }\n" + |
aoqi@0 | 55 | "class A implements I { public void m() {} }\n" + |
aoqi@0 | 56 | "class B extends A { }\n"; |
aoqi@0 | 57 | |
aoqi@0 | 58 | public SourceFile() { |
aoqi@0 | 59 | super(URI.create("test.java"), Kind.SOURCE); |
aoqi@0 | 60 | } |
aoqi@0 | 61 | |
aoqi@0 | 62 | public CharSequence getCharContent(boolean ignoreEncodingErrors) { |
aoqi@0 | 63 | return source; |
aoqi@0 | 64 | } |
aoqi@0 | 65 | } |
aoqi@0 | 66 | |
aoqi@0 | 67 | public static void main(String[] args) throws IOException { |
aoqi@0 | 68 | List<? extends JavaFileObject> files = Arrays.asList(new SourceFile()); |
aoqi@0 | 69 | JavaCompiler tool = ToolProvider.getSystemJavaCompiler(); |
aoqi@0 | 70 | JavacTask ct = (JavacTask)tool.getTask(null, null, null, null, null, files); |
aoqi@0 | 71 | Context ctx = new Context(); |
aoqi@0 | 72 | JavacFileManager.preRegister(ctx); |
aoqi@0 | 73 | checkImplementationCache(ct.analyze(), Types.instance(ctx)); |
aoqi@0 | 74 | } |
aoqi@0 | 75 | |
aoqi@0 | 76 | static void checkImplementationCache(Iterable<? extends Element> elements, Types types) { |
aoqi@0 | 77 | if (types == null) { |
aoqi@0 | 78 | throw new AssertionError("problems initializing Types"); |
aoqi@0 | 79 | } |
aoqi@0 | 80 | |
aoqi@0 | 81 | Symbol a = null; |
aoqi@0 | 82 | Symbol b = null; |
aoqi@0 | 83 | Symbol i = null; |
aoqi@0 | 84 | |
aoqi@0 | 85 | for (Element e : elements) { |
aoqi@0 | 86 | if (e.getSimpleName().contentEquals("A")) { |
aoqi@0 | 87 | a = (Symbol)e; |
aoqi@0 | 88 | } else if (e.getSimpleName().contentEquals("B")) { |
aoqi@0 | 89 | b = (Symbol)e; |
aoqi@0 | 90 | } else if (e.getSimpleName().contentEquals("I")) { |
aoqi@0 | 91 | i = (Symbol)e; |
aoqi@0 | 92 | } |
aoqi@0 | 93 | } |
aoqi@0 | 94 | |
aoqi@0 | 95 | if (a == null || b == null || i == null) { |
aoqi@0 | 96 | throw new AssertionError("missing class"); |
aoqi@0 | 97 | } |
aoqi@0 | 98 | |
aoqi@0 | 99 | MethodSymbol I_m = null; |
aoqi@0 | 100 | |
aoqi@0 | 101 | for (Symbol sym : i.members().getElements()) { |
aoqi@0 | 102 | if (sym.name.contentEquals("m")) { |
aoqi@0 | 103 | I_m = (MethodSymbol)sym; |
aoqi@0 | 104 | } |
aoqi@0 | 105 | } |
aoqi@0 | 106 | |
aoqi@0 | 107 | if (I_m == null) { |
aoqi@0 | 108 | throw new AssertionError("missing method m() in scope of interface I"); |
aoqi@0 | 109 | } |
aoqi@0 | 110 | |
aoqi@0 | 111 | Symbol impl = I_m.implementation((TypeSymbol)b, types, true); |
aoqi@0 | 112 | |
aoqi@0 | 113 | if (impl == null || impl.owner != a) { |
aoqi@0 | 114 | throw new AssertionError("wrong implementation for m() in B"); |
aoqi@0 | 115 | } |
aoqi@0 | 116 | |
aoqi@0 | 117 | b.members().enter(I_m.clone(b)); |
aoqi@0 | 118 | |
aoqi@0 | 119 | Symbol newImpl = I_m.implementation((TypeSymbol)b, types, true); |
aoqi@0 | 120 | |
aoqi@0 | 121 | if (newImpl == impl) { |
aoqi@0 | 122 | throw new AssertionError("stale implementation for m() in B"); |
aoqi@0 | 123 | } |
aoqi@0 | 124 | |
aoqi@0 | 125 | if (newImpl == null || newImpl.owner != b) { |
aoqi@0 | 126 | throw new AssertionError("wrong implementation for m() in B"); |
aoqi@0 | 127 | } |
aoqi@0 | 128 | } |
aoqi@0 | 129 | } |