diff -r b0c086cd4520 -r d7e155f874a7 test/tools/javac/lambda/LocalVariableTable.java --- a/test/tools/javac/lambda/LocalVariableTable.java Tue Oct 15 15:57:13 2013 -0700 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,206 +0,0 @@ -/* - * 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. - * - * 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 8025998 - * @summary Missing LV table in lambda bodies - * @compile -g LocalVariableTable.java - * @run main LocalVariableTable - */ - -import java.lang.annotation.*; -import java.util.*; -import com.sun.tools.classfile.*; - -/* - * The test checks that a LocalVariableTable attribute is generated for the - * method bodies representing lambda expressions, and checks that the expected - * set of entries is found in the attribute. - * - * Since the bug was about missing entries in the LVT, not malformed entries, - * the test is not intended to be a detailed test of the contents of each - * LocalVariableTable entry: it is assumed that if a entry is present, it - * will have the correct contents. - * - * The test looks for test cases represented by nested classes whose - * name begins with "Lambda". Each such class contains a lambda expression - * that will mapped into a lambda method, and because the test is compiled - * with -g, these methods should have a LocalVariableTable. The set of - * expected names in the LVT is provided in an annotation on the class for - * the test case. - */ -public class LocalVariableTable { - public static void main(String... args) throws Exception { - new LocalVariableTable().run(); - } - - void run() throws Exception { - // the declared classes are returned in an unspecified order, - // so for neatness, sort them by name before processing them - Class[] classes = getClass().getDeclaredClasses(); - Arrays.sort(classes, (c1, c2) -> c1.getName().compareTo(c2.getName())); - - for (Class c : classes) { - if (c.getSimpleName().startsWith("Lambda")) - check(c); - } - if (errors > 0) - throw new Exception(errors + " errors found"); - } - - /** Check an individual test case. */ - void check(Class c) throws Exception { - System.err.println("Checking " + c.getSimpleName()); - - Expect expect = c.getAnnotation(Expect.class); - if (expect == null) { - error("@Expect not found for class " + c.getSimpleName()); - return; - } - - ClassFile cf = ClassFile.read(getClass().getResource(c.getName() + ".class").openStream()); - Method m = getLambdaMethod(cf); - if (m == null) { - error("lambda method not found"); - return; - } - - Code_attribute code = (Code_attribute) m.attributes.get(Attribute.Code); - if (code == null) { - error("Code attribute not found"); - return; - } - - LocalVariableTable_attribute lvt = - (LocalVariableTable_attribute) code.attributes.get(Attribute.LocalVariableTable); - if (lvt == null) { - error("LocalVariableTable attribute not found"); - return; - } - - Set foundNames = new LinkedHashSet<>(); - for (LocalVariableTable_attribute.Entry e: lvt.local_variable_table) { - foundNames.add(cf.constant_pool.getUTF8Value(e.name_index)); - } - - Set expectNames = new LinkedHashSet<>(Arrays.asList(expect.value())); - if (!foundNames.equals(expectNames)) { - Set foundOnly = new LinkedHashSet<>(foundNames); - foundOnly.removeAll(expectNames); - for (String s: foundOnly) - error("Unexpected name found: " + s); - Set expectOnly = new LinkedHashSet<>(expectNames); - expectOnly.removeAll(foundNames); - for (String s: expectOnly) - error("Expected name not found: " + s); - } - } - - /** Get a method whose name begins "lambda$...". */ - Method getLambdaMethod(ClassFile cf) throws ConstantPoolException { - for (Method m: cf.methods) { - if (m.getName(cf.constant_pool).startsWith("lambda$")) - return m; - } - return null; - } - - /** Report an error. */ - void error(String msg) { - System.err.println("Error: " + msg); - errors++; - } - - int errors; - - /** - * Annotation used to provide the set of names expected in the LVT attribute. - */ - @Retention(RetentionPolicy.RUNTIME) - @interface Expect { - String[] value(); - } - - /** Functional interface with nullary method. */ - interface Run0 { - public void run(); - } - - /** Functional interface with 1-ary method. */ - interface Run1 { - public void run(int a0); - } - - /** Functional interface with 2-ary method. */ - interface Run2 { - public void run(int a0, int a1); - } - - /* - * ---------- Test cases --------------------------------------------------- - */ - - @Expect({ "x" }) - static class Lambda_Args0_Local1 { - Run0 r = () -> { int x = 0; }; - } - - @Expect({ "x", "this" }) - static class Lambda_Args0_Local1_this { - int v; - Run0 r = () -> { int x = v; }; - } - - @Expect({ "a" }) - static class Lambda_Args1_Local0 { - Run1 r = (a) -> { }; - } - - @Expect({ "a", "x" }) - static class Lambda_Args1_Local1 { - Run1 r = (a) -> { int x = a; }; - } - - @Expect({ "a", "x" }) - static class Lambda_Args1_Local1_Captured1 { - void m() { - int v = 0; - Run1 r = (a) -> { int x = a + v; }; - } - } - - @Expect({ "a1", "a2", "x1", "x2", "this" }) - static class Lambda_Args2_Local2_Captured2_this { - int v; - void m() { - int v1 = 0; - int v2 = 0; - Run2 r = (a1, a2) -> { - int x1 = a1 + v1 + v; - int x2 = a2 + v2 + v; - }; - } - } -} -