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