jdk8-mips64-public/langtools: test/tools/javac/T8019486/WrongLNTForLambdaTest.java@864dafc5ab7a (annotated)

test/tools/javac/T8019486/WrongLNTForLambdaTest.java@864dafc5ab7a (annotated)

test/tools/javac/T8019486/WrongLNTForLambdaTest.java

Wed, 23 Oct 2013 07:50:04 +0200

author: jlahoda
date: Wed, 23 Oct 2013 07:50:04 +0200
changeset 2165: 864dafc5ab7a
child 2186: 6e0f31d61e56
permissions: -rw-r--r--

8026861: Wrong LineNumberTable for variable declarations in lambdas
Summary: Setting or correcting positions for many trees produced by LambdaToMethod.
Reviewed-by: vromero, rfield

 /*
  * Copyright (c) 2013, 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.  Oracle designates this
  * particular file as subject to the "Classpath" exception as provided
  * by Oracle in the LICENSE file that accompanied this code.
  *
  * 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 8019486 8026861
  * @summary javac, generates erroneous LVT for a test case with lambda code
  * @library /tools/javac/lib
  * @build ToolBox
  * @run main WrongLNTForLambdaTest
  */
 import java.io.File;
 import java.nio.file.Paths;
 import com.sun.tools.classfile.ClassFile;
 import com.sun.tools.classfile.Code_attribute;
 import com.sun.tools.classfile.LineNumberTable_attribute;
 import com.sun.tools.classfile.Method;
 import com.sun.tools.javac.util.Assert;
 public class WrongLNTForLambdaTest {
     static final String testSource =
     /* 01 */        "import java.util.List;\n" +
     /* 02 */        "import java.util.Arrays;\n" +
     /* 03 */        "import java.util.stream.Collectors;\n" +
     /* 04 */        "\n" +
     /* 05 */        "public class Foo {\n" +
     /* 06 */        "    void bar(int value) {\n" +
     /* 07 */        "        final List<Integer> numbers = Arrays.asList(1, 2, 3);\n" +
     /* 08 */        "        final List<Integer> numbersPlusOne = \n" +
     /* 09 */        "             numbers.stream().map(number -> number / 1).collect(Collectors.toList());\n" +
     /* 10 */        "    }\n" +
     /* 11 */        "    void variablesInLambdas(int value) {\n" +
     /* 12 */        "        Runnable r1 = () -> {\n" +
     /* 13 */        "            int i  = value;\n" +
     /* 14 */        "            class FooBar<T extends CharSequence> {\n" +
     /* 15 */        "                public void run() {\n" +
     /* 16 */        "                    T t = null;\n" +
     /* 17 */        "                }\n" +
     /* 18 */        "            }\n" +
     /* 19 */        "        };\n" +
     /* 20 */        "        Runnable r2 = () -> System.err.println(1);\n" +
     /* 21 */        "        Runnable r3 = (Runnable & java.io.Serializable) this::foo;\n" +
     /* 22 */        "        Runnable r4 = super :: notify;\n" +
     /* 23 */        "    }\n" +
     /* 24 */        "    private void foo() {}\n" +
     /* 25 */        "}";
     static final int[][] simpleLambdaExpectedLNT = {
     //  {line-number, start-pc},
         {9,           0},       //number -> number / 1
     };
     static final int[][] lambdaWithVarsExpectedLNT = {
     //  {line-number, start-pc},
         {13,           0},       //number -> number / 1
         {19,           2},       //number -> number / 1
     };
     static final int[][] insideLambdaWithVarsExpectedLNT = {
     //  {line-number, start-pc},
         {16,           0},       //number -> number / 1
         {17,           2},       //number -> number / 1
     };
     static final int[][] lambdaVoid2VoidExpectedLNT = {
     //  {line-number, start-pc},
         {20,           0},       //number -> number / 1
     };
     static final int[][] deserializeExpectedLNT = {
     //  {line-number, start-pc},
         {05,           0},       //number -> number / 1
     };
     static final int[][] lambdaBridgeExpectedLNT = {
     //  {line-number, start-pc},
         {22,           0},       //number -> number / 1
     };
     public static void main(String[] args) throws Exception {
         new WrongLNTForLambdaTest().run();
     }
     void run() throws Exception {
         compileTestClass();
         checkClassFile(new File(Paths.get(System.getProperty("user.dir"),
                 "Foo.class").toUri()), "lambda$bar$0", simpleLambdaExpectedLNT);
         checkClassFile(new File(Paths.get(System.getProperty("user.dir"),
                 "Foo.class").toUri()), "lambda$variablesInLambdas$1", lambdaWithVarsExpectedLNT);
         checkClassFile(new File(Paths.get(System.getProperty("user.dir"),
                 "Foo$1FooBar.class").toUri()), "run", insideLambdaWithVarsExpectedLNT);
         checkClassFile(new File(Paths.get(System.getProperty("user.dir"),
                 "Foo.class").toUri()), "lambda$variablesInLambdas$2", lambdaVoid2VoidExpectedLNT);
         checkClassFile(new File(Paths.get(System.getProperty("user.dir"),
                 "Foo.class").toUri()), "$deserializeLambda$", deserializeExpectedLNT);
         checkClassFile(new File(Paths.get(System.getProperty("user.dir"),
                 "Foo.class").toUri()), "lambda$MR$variablesInLambdas$notify$8bc4f5bd$1", lambdaBridgeExpectedLNT);
     }
     void compileTestClass() throws Exception {
         ToolBox.JavaToolArgs javacSuccessArgs =
                 new ToolBox.JavaToolArgs().setSources(testSource);
         ToolBox.javac(javacSuccessArgs);
     }
     void checkClassFile(final File cfile, String methodToFind, int[][] expectedLNT) throws Exception {
         ClassFile classFile = ClassFile.read(cfile);
         boolean methodFound = false;
         for (Method method : classFile.methods) {
             if (method.getName(classFile.constant_pool).equals(methodToFind)) {
                 methodFound = true;
                 Code_attribute code = (Code_attribute) method.attributes.get("Code");
                 LineNumberTable_attribute lnt =
                         (LineNumberTable_attribute) code.attributes.get("LineNumberTable");
                 Assert.check(lnt.line_number_table_length == expectedLNT.length,
                         "The LineNumberTable found has a length different to the expected one");
                 int i = 0;
                 for (LineNumberTable_attribute.Entry entry: lnt.line_number_table) {
                     Assert.check(entry.line_number == expectedLNT[i][0] &&
                             entry.start_pc == expectedLNT[i][1],
                             "LNT entry at pos " + i + " differ from expected." +
                             "Found " + entry.line_number + ":" + entry.start_pc +
                             ". Expected " + expectedLNT[i][0] + ":" + expectedLNT[i][1]);
                     i++;
                 }
             }
         }
         Assert.check(methodFound, "The seek method was not found");
     }
     void error(String msg) {
         throw new AssertionError(msg);
     }
 }

Mercurial > jdk8-mips64-public > langtools / annotate

test/tools/javac/T8019486/WrongLNTForLambdaTest.java@864dafc5ab7a (annotated)

test/tools/javac/T8019486/WrongLNTForLambdaTest.java