1/* 2 * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24/** 25 * @test 8160156 26 * @summary javac is generating let expressions unnecessarily 27 * @library /tools/lib 28 * @modules 29 * jdk.compiler/com.sun.tools.javac.api 30 * jdk.compiler/com.sun.tools.javac.main 31 * @build toolbox.ToolBox toolbox.JavacTask 32 * @run main LetExpressionsAreUnnecessarilyGeneratedTest 33 */ 34 35import java.nio.file.Files; 36import java.nio.file.Path; 37import java.nio.file.Paths; 38 39import toolbox.JavacTask; 40import toolbox.Task; 41import toolbox.TestRunner; 42import toolbox.ToolBox; 43 44public class LetExpressionsAreUnnecessarilyGeneratedTest extends TestRunner { 45 ToolBox tb; 46 47 public static void main(String... args) throws Exception { 48 new LetExpressionsAreUnnecessarilyGeneratedTest().runTests(); 49 } 50 51 public LetExpressionsAreUnnecessarilyGeneratedTest() { 52 super(System.err); 53 tb = new ToolBox(); 54 } 55 56 protected void runTests() throws Exception { 57 runTests(m -> new Object[] { Paths.get(m.getName()) }); 58 } 59 60 @Test 61 public void testDontGenerateLetExpr(Path testBase) throws Exception { 62 Path src = testBase.resolve("src"); 63 tb.writeJavaFiles(src, 64 "package base;\n" + 65 "public abstract class Base {\n" + 66 " protected int i = 1;\n" + 67 "}", 68 69 "package sub;\n" + 70 "import base.Base;\n" + 71 "public class Sub extends Base {\n" + 72 " private int i = 4;\n" + 73 " void m() {\n" + 74 " new Runnable() {\n" + 75 " public void run() {\n" + 76 " Sub.super.i += 10;\n" + 77 " }\n" + 78 " };\n" + 79 " }\n" + 80 "}"); 81 82 Path out = testBase.resolve("out"); 83 Files.createDirectories(out); 84 Path base = src.resolve("base"); 85 Path sub = src.resolve("sub"); 86 87 new JavacTask(tb) 88 .outdir(out) 89 .files(tb.findJavaFiles(base)) 90 .run(Task.Expect.SUCCESS); 91 92 new JavacTask(tb) 93 .classpath(out) 94 .outdir(out) 95 .files(tb.findJavaFiles(sub)) 96 .run(Task.Expect.SUCCESS); 97 } 98} 99