| /* |
| * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /** |
| * @test |
| * @bug 8144733 |
| * @summary Verify that Scope.remove removes the Symbol also from already running iterations. |
| * @modules jdk.compiler/com.sun.tools.javac.code |
| * jdk.compiler/com.sun.tools.javac.util |
| */ |
| |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.Collections; |
| import java.util.Iterator; |
| import java.util.List; |
| import java.util.function.Function; |
| |
| import com.sun.tools.javac.code.Scope; |
| import com.sun.tools.javac.code.Scope.WriteableScope; |
| import com.sun.tools.javac.code.Symbol; |
| import com.sun.tools.javac.code.Symbol.PackageSymbol; |
| import com.sun.tools.javac.util.Context; |
| import com.sun.tools.javac.util.Name; |
| import com.sun.tools.javac.util.Names; |
| |
| public class IterateAndRemove { |
| public static void main(String... args) { |
| new IterateAndRemove().run(); |
| } |
| |
| void run() { |
| Context ctx = new Context(); |
| Names names = Names.instance(ctx); |
| Symbol root = new PackageSymbol(names.empty, null); |
| Name one = names.fromString("1"); |
| PackageSymbol sym1 = new PackageSymbol(one, new PackageSymbol(names.fromString("a"), root)); |
| PackageSymbol sym2 = new PackageSymbol(one, new PackageSymbol(names.fromString("b"), root)); |
| PackageSymbol sym3 = new PackageSymbol(one, new PackageSymbol(names.fromString("c"), root)); |
| List<Symbol> symbols = Arrays.asList(sym1, sym2, sym3); |
| |
| List<Function<Scope, Iterable<Symbol>>> getters = Arrays.asList( |
| scope -> scope.getSymbols(), |
| scope -> scope.getSymbolsByName(one) |
| ); |
| for (Function<Scope, Iterable<Symbol>> scope2Content : getters) { |
| for (int removeAt : new int[] {0, 1, 2, 3}) { |
| for (Symbol removeWhat : new Symbol[] {sym1, sym2, sym3}) { |
| WriteableScope s = WriteableScope.create(root); |
| |
| symbols.forEach(s :: enter); |
| |
| Iterator<Symbol> it = scope2Content.apply(s).iterator(); |
| List<PackageSymbol> actual = new ArrayList<>(); |
| int count = 0; |
| |
| while (true) { |
| if (count++ == removeAt) |
| s.remove(removeWhat); |
| if (!it.hasNext()) |
| break; |
| actual.add((PackageSymbol) it.next()); |
| } |
| |
| List<Symbol> copy = new ArrayList<>(symbols); |
| |
| Collections.reverse(copy); |
| |
| count = 0; |
| |
| while (true) { |
| if (count == removeAt && copy.indexOf(removeWhat) >= count) |
| copy.remove(removeWhat); |
| count++; |
| if (count >= copy.size()) |
| break; |
| } |
| |
| if (!copy.equals(actual)) { |
| throw new AssertionError("differs: actual: " + actual + "; expected: " + copy); |
| } |
| } |
| } |
| } |
| } |
| } |