1/* 2 * Copyright (c) 2011, 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 26 * @bug 8003280 27 * @summary Add lambda tests 28 * test for capture of non-mutable locals/outer fields in multiple scopes 29 * @author Maurizio Cimadamore 30 * @run main LambdaCapture03 31 */ 32 33public class LambdaCapture03 { 34 35 static int assertionCount = 0; 36 37 static void assertTrue(boolean cond) { 38 assertionCount++; 39 if (!cond) 40 throw new AssertionError(); 41 } 42 43 interface Tester { 44 void test(); 45 } 46 47 interface TU<T, U> { 48 public T foo(U u); 49 } 50 51 public static <T, U> T exec(TU<T, U> lambda, U x) { 52 return lambda.foo(x); 53 } 54 55 Integer n1 = 10; 56 57 void test1() { 58 final Integer N1 = 1; 59 class A { 60 Integer n2 = 20; 61 void test() { 62 final Integer N2 = 2; 63 class B { 64 void test() { 65 final Integer N3 = 3; 66 int res = LambdaCapture03.exec((Integer x) -> x + n1 + n2 + N1 + N2 + N3, 30); 67 assertTrue(res == 66); 68 } 69 } 70 new B().test(); 71 } 72 } 73 new A().test(); 74 } 75 76 void test2() { 77 final Integer N1 = 1; 78 new Tester() { 79 Integer n2 = 20; 80 public void test() { 81 final Integer N2 = 2; 82 new Tester() { 83 public void test() { 84 final Integer N3 = 3; 85 int res = LambdaCapture03.exec((Integer x) -> x + n1 + n2 + N1 + N2 + N3, 30); 86 assertTrue(res == 66); 87 } 88 }.test(); 89 } 90 }.test(); 91 } 92 93 public static void main(String[] args) { 94 LambdaCapture03 t = new LambdaCapture03(); 95 t.test1(); 96 t.test2(); 97 assertTrue(assertionCount == 2); 98 } 99} 100