189 lines
7.9 KiB
Java
189 lines
7.9 KiB
Java
/*
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* Copyright (c) 2013, 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 8019486 8026861 8027142
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* @summary javac, generates erroneous LVT for a test case with lambda code
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* @library /tools/lib
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* @enablePreview
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* @modules jdk.compiler/com.sun.tools.javac.api
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* jdk.compiler/com.sun.tools.javac.main
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* jdk.compiler/com.sun.tools.javac.util
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* java.base/jdk.internal.classfile.impl
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* @build toolbox.ToolBox toolbox.JavacTask
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* @run main WrongLNTForLambdaTest
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*/
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import java.io.File;
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import java.nio.file.Paths;
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import com.sun.tools.javac.util.Assert;
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import java.lang.classfile.*;
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import java.lang.classfile.attribute.*;
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import toolbox.JavacTask;
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import toolbox.ToolBox;
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public class WrongLNTForLambdaTest {
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static final String testSource =
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/* 01 */ "import java.util.List;\n" +
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/* 02 */ "import java.util.Arrays;\n" +
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/* 03 */ "import java.util.stream.Collectors;\n" +
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/* 04 */ "\n" +
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/* 05 */ "public class Foo {\n" +
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/* 06 */ " void bar(int value) {\n" +
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/* 07 */ " final List<Integer> numbers = Arrays.asList(1, 2, 3);\n" +
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/* 08 */ " final List<Integer> numbersPlusOne = \n" +
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/* 09 */ " numbers.stream().map(number -> number / 1).collect(Collectors.toList());\n" +
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/* 10 */ " }\n" +
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/* 11 */ " void variablesInLambdas(int value) {\n" +
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/* 12 */ " Runnable r1 = () -> {\n" +
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/* 13 */ " int i = value;\n" +
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/* 14 */ " class FooBar<T extends CharSequence> {\n" +
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/* 15 */ " public void run() {\n" +
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/* 16 */ " T t = null;\n" +
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/* 17 */ " }\n" +
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/* 18 */ " }\n" +
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/* 19 */ " };\n" +
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/* 20 */ " Runnable r2 = () -> System.err.println(1);\n" +
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/* 21 */ " Runnable r3 = (Runnable & java.io.Serializable) this::foo;\n" +
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/* 22 */ " Runnable r4 = super :: notify;\n" +
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/* 23 */ " }\n" +
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/* 24 */ " private void foo() {}\n" +
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/* 25 */ " void assignLambda() {\n" +
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/* 26 */ " Runnable r = () -> { };\n" +
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/* 27 */ " }\n" +
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/* 28 */ " void callLambda(int i, Runnable r) {\n" +
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/* 29 */ " callLambda(0,\n" +
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/* 30 */ " () -> { });\n" +
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/* 31 */ " }\n" +
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/* 32 */ "}";
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static final int[][] simpleLambdaExpectedLNT = {
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// {line-number, start-pc},
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{9, 0}, //number -> number / 1
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};
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static final int[][] lambdaWithVarsExpectedLNT = {
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// {line-number, start-pc},
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{13, 0}, //number -> number / 1
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{19, 2}, //number -> number / 1
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};
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static final int[][] insideLambdaWithVarsExpectedLNT = {
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// {line-number, start-pc},
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{16, 0}, //number -> number / 1
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{17, 2}, //number -> number / 1
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};
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static final int[][] lambdaVoid2VoidExpectedLNT = {
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// {line-number, start-pc},
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{20, 0}, //number -> number / 1
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};
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static final int[][] deserializeExpectedLNT = {
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// {line-number, start-pc},
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{05, 0}, //number -> number / 1
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};
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static final int[][] lambdaBridgeExpectedLNT = {
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// {line-number, start-pc},
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{22, 0}, //number -> number / 1
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};
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static final int[][] assignmentExpectedLNT = {
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// {line-number, start-pc},
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{26, 0}, //number -> number / 1
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{27, 6}, //number -> number / 1
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};
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static final int[][] callExpectedLNT = {
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// {line-number, start-pc},
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{29, 0}, //number -> number / 1
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{31, 10}, //number -> number / 1
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};
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public static void main(String[] args) throws Exception {
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new WrongLNTForLambdaTest().run();
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}
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ToolBox tb = new ToolBox();
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void run() throws Exception {
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compileTestClass();
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checkClassFile(new File(Paths.get(System.getProperty("user.dir"),
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"Foo.class").toUri()), "lambda$bar$0", simpleLambdaExpectedLNT);
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checkClassFile(new File(Paths.get(System.getProperty("user.dir"),
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"Foo.class").toUri()), "lambda$variablesInLambdas$0", lambdaWithVarsExpectedLNT);
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checkClassFile(new File(Paths.get(System.getProperty("user.dir"),
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"Foo$1FooBar.class").toUri()), "run", insideLambdaWithVarsExpectedLNT);
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checkClassFile(new File(Paths.get(System.getProperty("user.dir"),
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"Foo.class").toUri()), "lambda$variablesInLambdas$1", lambdaVoid2VoidExpectedLNT);
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checkClassFile(new File(Paths.get(System.getProperty("user.dir"),
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"Foo.class").toUri()), "$deserializeLambda$", deserializeExpectedLNT);
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checkClassFile(new File(Paths.get(System.getProperty("user.dir"),
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"Foo.class").toUri()), "lambda$variablesInLambdas$2", lambdaBridgeExpectedLNT);
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checkClassFile(new File(Paths.get(System.getProperty("user.dir"),
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"Foo.class").toUri()), "assignLambda", assignmentExpectedLNT);
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checkClassFile(new File(Paths.get(System.getProperty("user.dir"),
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"Foo.class").toUri()), "callLambda", callExpectedLNT);
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}
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void compileTestClass() throws Exception {
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new JavacTask(tb)
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.sources(testSource)
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.run();
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}
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void checkClassFile(final File cfile, String methodToFind, int[][] expectedLNT) throws Exception {
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ClassModel classFile = ClassFile.of().parse(cfile.toPath());
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boolean methodFound = false;
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for (MethodModel method : classFile.methods()) {
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if (method.methodName().equalsString(methodToFind)) {
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methodFound = true;
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CodeAttribute code = method.findAttribute(Attributes.code()).orElseThrow();
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LineNumberTableAttribute lnt = code.findAttribute(Attributes.lineNumberTable()).orElseThrow();
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Assert.check(lnt.lineNumbers().size() == expectedLNT.length,
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"The LineNumberTable found has a length different to the expected one");
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int i = 0;
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for (LineNumberInfo entry: lnt.lineNumbers()) {
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Assert.check(entry.lineNumber() == expectedLNT[i][0] &&
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entry.startPc() == expectedLNT[i][1],
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"LNT entry at pos " + i + " differ from expected." +
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"Found " + entry.lineNumber() + ":" + entry.startPc() +
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". Expected " + expectedLNT[i][0] + ":" + expectedLNT[i][1]);
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i++;
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}
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}
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}
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Assert.check(methodFound, "The seek method was not found");
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}
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void error(String msg) {
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throw new AssertionError(msg);
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}
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}
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