Wed, 24 Sep 2014 11:38:26 -0700
Added tag jdk8u40-b07 for changeset 2fa3858a281f
aoqi@0 | 1 | /* |
aoqi@0 | 2 | * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved. |
aoqi@0 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
aoqi@0 | 4 | * |
aoqi@0 | 5 | * This code is free software; you can redistribute it and/or modify it |
aoqi@0 | 6 | * under the terms of the GNU General Public License version 2 only, as |
aoqi@0 | 7 | * published by the Free Software Foundation. |
aoqi@0 | 8 | * |
aoqi@0 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
aoqi@0 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
aoqi@0 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
aoqi@0 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
aoqi@0 | 13 | * accompanied this code). |
aoqi@0 | 14 | * |
aoqi@0 | 15 | * You should have received a copy of the GNU General Public License version |
aoqi@0 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
aoqi@0 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
aoqi@0 | 18 | * |
aoqi@0 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
aoqi@0 | 20 | * or visit www.oracle.com if you need additional information or have any |
aoqi@0 | 21 | * questions. |
aoqi@0 | 22 | */ |
aoqi@0 | 23 | |
aoqi@0 | 24 | /** |
aoqi@0 | 25 | * @test |
aoqi@0 | 26 | * @bug 8003280 |
aoqi@0 | 27 | * @summary Add lambda tests |
aoqi@0 | 28 | * This test is for self referential and recursive lambda expression that have type inference |
aoqi@0 | 29 | * @compile InferenceTest11.java |
aoqi@0 | 30 | * @run main InferenceTest11 |
aoqi@0 | 31 | */ |
aoqi@0 | 32 | |
aoqi@0 | 33 | public class InferenceTest11 { |
aoqi@0 | 34 | |
aoqi@0 | 35 | private static void assertTrue(boolean b) { |
aoqi@0 | 36 | if(!b) |
aoqi@0 | 37 | throw new AssertionError(); |
aoqi@0 | 38 | } |
aoqi@0 | 39 | |
aoqi@0 | 40 | static Func<Integer, Integer> f1; |
aoqi@0 | 41 | static Func<Integer, ? extends Number> f2; |
aoqi@0 | 42 | |
aoqi@0 | 43 | public static void main(String[] args) { |
aoqi@0 | 44 | |
aoqi@0 | 45 | f1 = n -> { |
aoqi@0 | 46 | if(n <= 0) |
aoqi@0 | 47 | return 0; |
aoqi@0 | 48 | if(n == 1) |
aoqi@0 | 49 | return 1; |
aoqi@0 | 50 | return f1.m(n-1) + f1.m(n-2); |
aoqi@0 | 51 | }; |
aoqi@0 | 52 | assertTrue(f1.m(-1) == 0); |
aoqi@0 | 53 | assertTrue(f1.m(0) == 0); |
aoqi@0 | 54 | assertTrue(f1.m(10) == 55); |
aoqi@0 | 55 | |
aoqi@0 | 56 | f2 = n -> { |
aoqi@0 | 57 | if(n <= 1) |
aoqi@0 | 58 | return 1.0; |
aoqi@0 | 59 | return 2 * (Double)f2.m(n-1) + 1; |
aoqi@0 | 60 | }; |
aoqi@0 | 61 | assertTrue(f2.m(4).doubleValue() == 15.0); |
aoqi@0 | 62 | } |
aoqi@0 | 63 | |
aoqi@0 | 64 | interface Func<T, V> { |
aoqi@0 | 65 | V m(T t); |
aoqi@0 | 66 | } |
aoqi@0 | 67 | } |