Mercurial > jdk8-mips64-public > langtools / file comparison
comparison: test/tools/javac/T8019486/WrongLVTForLambdaTest.java
test/tools/javac/T8019486/WrongLVTForLambdaTest.java
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| 1 /* | |
| 2 * Copyright (c) 2013, 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. Oracle designates this | |
| 8 * particular file as subject to the "Classpath" exception as provided | |
| 9 * by Oracle in the LICENSE file that accompanied this code. | |
| 10 * | |
| 11 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 14 * version 2 for more details (a copy is included in the LICENSE file that | |
| 15 * accompanied this code). | |
| 16 * | |
| 17 * You should have received a copy of the GNU General Public License version | |
| 18 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 20 * | |
| 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
| 22 * or visit www.oracle.com if you need additional information or have any | |
| 23 * questions. | |
| 24 */ | |
| 25 | |
| 26 /* | |
| 27 * @test | |
| 28 * @bug 8019486 | |
| 29 * @summary javac, generates erroneous LVT for a test case with lambda code | |
| 30 * @library /tools/javac/lib | |
| 31 * @build ToolBox | |
| 32 * @run main WrongLVTForLambdaTest | |
| 33 */ | |
| 34 | |
| 35 import java.io.File; | |
| 36 import java.nio.file.Paths; | |
| 37 | |
| 38 import com.sun.tools.classfile.ClassFile; | |
| 39 import com.sun.tools.classfile.Code_attribute; | |
| 40 import com.sun.tools.classfile.LineNumberTable_attribute; | |
| 41 import com.sun.tools.classfile.Method; | |
| 42 import com.sun.tools.javac.util.Assert; | |
| 43 | |
| 44 public class WrongLVTForLambdaTest { | |
| 45 | |
| 46 static final String testSource = | |
| 47 /* 01 */ "import java.util.List;\n" + | |
| 48 /* 02 */ "import java.util.Arrays;\n" + | |
| 49 /* 03 */ "import java.util.stream.Collectors;\n" + | |
| 50 /* 04 */ "\n" + | |
| 51 /* 05 */ "public class Foo {\n" + | |
| 52 /* 06 */ " void bar(int value) {\n" + | |
| 53 /* 07 */ " final List<Integer> numbers = Arrays.asList(1, 2, 3);\n" + | |
| 54 /* 08 */ " final List<Integer> numbersPlusOne = \n" + | |
| 55 /* 09 */ " numbers.stream().map(number -> number / 1).collect(Collectors.toList());\n" + | |
| 56 /* 10 */ " }\n" + | |
| 57 /* 11 */ "}"; | |
| 58 | |
| 59 static final int[][] expectedLNT = { | |
| 60 // {line-number, start-pc}, | |
| 61 {9, 0}, //number -> number / 1 | |
| 62 }; | |
| 63 | |
| 64 public static void main(String[] args) throws Exception { | |
| 65 new WrongLVTForLambdaTest().run(); | |
| 66 } | |
| 67 | |
| 68 void run() throws Exception { | |
| 69 compileTestClass(); | |
| 70 checkClassFile(new File(Paths.get(System.getProperty("user.dir"), | |
| 71 "Foo.class").toUri())); | |
| 72 } | |
| 73 | |
| 74 void compileTestClass() throws Exception { | |
| 75 ToolBox.JavaToolArgs javacSuccessArgs = | |
| 76 new ToolBox.JavaToolArgs().setSources(testSource); | |
| 77 ToolBox.javac(javacSuccessArgs); | |
| 78 } | |
| 79 | |
| 80 void checkClassFile(final File cfile) throws Exception { | |
| 81 ClassFile classFile = ClassFile.read(cfile); | |
| 82 int methodsFound = 0; | |
| 83 for (Method method : classFile.methods) { | |
| 84 if (method.getName(classFile.constant_pool).startsWith("lambda$")) { | |
| 85 ++methodsFound; | |
| 86 Code_attribute code = (Code_attribute) method.attributes.get("Code"); | |
| 87 LineNumberTable_attribute lnt = | |
| 88 (LineNumberTable_attribute) code.attributes.get("LineNumberTable"); | |
| 89 Assert.check(lnt.line_number_table_length == expectedLNT.length, | |
| 90 "The LineNumberTable found has a length different to the expected one"); | |
| 91 int i = 0; | |
| 92 for (LineNumberTable_attribute.Entry entry: lnt.line_number_table) { | |
| 93 Assert.check(entry.line_number == expectedLNT[i][0] && | |
| 94 entry.start_pc == expectedLNT[i][1], | |
| 95 "LNT entry at pos " + i + " differ from expected." + | |
| 96 "Found " + entry.line_number + ":" + entry.start_pc + | |
| 97 ". Expected " + expectedLNT[i][0] + ":" + expectedLNT[i][1]); | |
| 98 i++; | |
| 99 } | |
| 100 } | |
| 101 } | |
| 102 Assert.check(methodsFound == 1, "Expected to find one lambda method, found " + methodsFound); | |
| 103 } | |
| 104 | |
| 105 void error(String msg) { | |
| 106 throw new AssertionError(msg); | |
| 107 } | |
| 108 | |
| 109 } |
