| /* |
| * 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 |
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| */ |
| |
| /** |
| * @test 8160156 |
| * @summary javac is generating let expressions unnecessarily |
| * @library /tools/lib |
| * @modules |
| * jdk.compiler/com.sun.tools.javac.api |
| * jdk.compiler/com.sun.tools.javac.main |
| * @build toolbox.ToolBox toolbox.JavacTask |
| * @run main LetExpressionsAreUnnecessarilyGeneratedTest |
| */ |
| |
| import java.nio.file.Files; |
| import java.nio.file.Path; |
| import java.nio.file.Paths; |
| |
| import toolbox.JavacTask; |
| import toolbox.Task; |
| import toolbox.TestRunner; |
| import toolbox.ToolBox; |
| |
| public class LetExpressionsAreUnnecessarilyGeneratedTest extends TestRunner { |
| ToolBox tb; |
| |
| public static void main(String... args) throws Exception { |
| new LetExpressionsAreUnnecessarilyGeneratedTest().runTests(); |
| } |
| |
| public LetExpressionsAreUnnecessarilyGeneratedTest() { |
| super(System.err); |
| tb = new ToolBox(); |
| } |
| |
| protected void runTests() throws Exception { |
| runTests(m -> new Object[] { Paths.get(m.getName()) }); |
| } |
| |
| @Test |
| public void testDontGenerateLetExpr(Path testBase) throws Exception { |
| Path src = testBase.resolve("src"); |
| tb.writeJavaFiles(src, |
| "package base;\n" + |
| "public abstract class Base {\n" + |
| " protected int i = 1;\n" + |
| "}", |
| |
| "package sub;\n" + |
| "import base.Base;\n" + |
| "public class Sub extends Base {\n" + |
| " private int i = 4;\n" + |
| " void m() {\n" + |
| " new Runnable() {\n" + |
| " public void run() {\n" + |
| " Sub.super.i += 10;\n" + |
| " }\n" + |
| " };\n" + |
| " }\n" + |
| "}"); |
| |
| Path out = testBase.resolve("out"); |
| Files.createDirectories(out); |
| Path base = src.resolve("base"); |
| Path sub = src.resolve("sub"); |
| |
| new JavacTask(tb) |
| .outdir(out) |
| .files(tb.findJavaFiles(base)) |
| .run(Task.Expect.SUCCESS); |
| |
| new JavacTask(tb) |
| .classpath(out) |
| .outdir(out) |
| .files(tb.findJavaFiles(sub)) |
| .run(Task.Expect.SUCCESS); |
| } |
| } |