1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/test/tools/javac/scope/7017664/ImplementationCacheTest.java Wed Apr 27 01:34:52 2016 +0800
1.3 @@ -0,0 +1,129 @@
1.4 +/*
1.5 + * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved.
1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 + *
1.8 + * This code is free software; you can redistribute it and/or modify it
1.9 + * under the terms of the GNU General Public License version 2 only, as
1.10 + * published by the Free Software Foundation.
1.11 + *
1.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.14 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.15 + * version 2 for more details (a copy is included in the LICENSE file that
1.16 + * accompanied this code).
1.17 + *
1.18 + * You should have received a copy of the GNU General Public License version
1.19 + * 2 along with this work; if not, write to the Free Software Foundation,
1.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.21 + *
1.22 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
1.23 + * or visit www.oracle.com if you need additional information or have any
1.24 + * questions.
1.25 + */
1.26 +
1.27 +/*
1.28 + * @test
1.29 + * @bug 7017664
1.30 + * @summary Basher for CompoundScopes
1.31 + */
1.32 +
1.33 +import com.sun.source.util.JavacTask;
1.34 +import com.sun.tools.javac.code.Symbol;
1.35 +import com.sun.tools.javac.code.Types;
1.36 +import com.sun.tools.javac.file.JavacFileManager;
1.37 +import com.sun.tools.javac.util.Context;
1.38 +
1.39 +import com.sun.tools.javac.code.Symbol.*;
1.40 +
1.41 +import java.io.IOException;
1.42 +import java.net.URI;
1.43 +import java.util.Arrays;
1.44 +import java.util.List;
1.45 +import javax.lang.model.element.Element;
1.46 +import javax.tools.JavaCompiler;
1.47 +import javax.tools.JavaFileObject;
1.48 +import javax.tools.SimpleJavaFileObject;
1.49 +import javax.tools.ToolProvider;
1.50 +
1.51 +import static javax.tools.JavaFileObject.Kind;
1.52 +
1.53 +public class ImplementationCacheTest {
1.54 +
1.55 + static class SourceFile extends SimpleJavaFileObject {
1.56 +
1.57 + final String source = "interface I { void m(); }\n" +
1.58 + "class A implements I { public void m() {} }\n" +
1.59 + "class B extends A { }\n";
1.60 +
1.61 + public SourceFile() {
1.62 + super(URI.create("test.java"), Kind.SOURCE);
1.63 + }
1.64 +
1.65 + public CharSequence getCharContent(boolean ignoreEncodingErrors) {
1.66 + return source;
1.67 + }
1.68 + }
1.69 +
1.70 + public static void main(String[] args) throws IOException {
1.71 + List<? extends JavaFileObject> files = Arrays.asList(new SourceFile());
1.72 + JavaCompiler tool = ToolProvider.getSystemJavaCompiler();
1.73 + JavacTask ct = (JavacTask)tool.getTask(null, null, null, null, null, files);
1.74 + Context ctx = new Context();
1.75 + JavacFileManager.preRegister(ctx);
1.76 + checkImplementationCache(ct.analyze(), Types.instance(ctx));
1.77 + }
1.78 +
1.79 + static void checkImplementationCache(Iterable<? extends Element> elements, Types types) {
1.80 + if (types == null) {
1.81 + throw new AssertionError("problems initializing Types");
1.82 + }
1.83 +
1.84 + Symbol a = null;
1.85 + Symbol b = null;
1.86 + Symbol i = null;
1.87 +
1.88 + for (Element e : elements) {
1.89 + if (e.getSimpleName().contentEquals("A")) {
1.90 + a = (Symbol)e;
1.91 + } else if (e.getSimpleName().contentEquals("B")) {
1.92 + b = (Symbol)e;
1.93 + } else if (e.getSimpleName().contentEquals("I")) {
1.94 + i = (Symbol)e;
1.95 + }
1.96 + }
1.97 +
1.98 + if (a == null || b == null || i == null) {
1.99 + throw new AssertionError("missing class");
1.100 + }
1.101 +
1.102 + MethodSymbol I_m = null;
1.103 +
1.104 + for (Symbol sym : i.members().getElements()) {
1.105 + if (sym.name.contentEquals("m")) {
1.106 + I_m = (MethodSymbol)sym;
1.107 + }
1.108 + }
1.109 +
1.110 + if (I_m == null) {
1.111 + throw new AssertionError("missing method m() in scope of interface I");
1.112 + }
1.113 +
1.114 + Symbol impl = I_m.implementation((TypeSymbol)b, types, true);
1.115 +
1.116 + if (impl == null || impl.owner != a) {
1.117 + throw new AssertionError("wrong implementation for m() in B");
1.118 + }
1.119 +
1.120 + b.members().enter(I_m.clone(b));
1.121 +
1.122 + Symbol newImpl = I_m.implementation((TypeSymbol)b, types, true);
1.123 +
1.124 + if (newImpl == impl) {
1.125 + throw new AssertionError("stale implementation for m() in B");
1.126 + }
1.127 +
1.128 + if (newImpl == null || newImpl.owner != b) {
1.129 + throw new AssertionError("wrong implementation for m() in B");
1.130 + }
1.131 + }
1.132 +}
