test/tools/javac/lambda/TargetType03.java

Tue, 12 Mar 2013 16:02:43 +0000

author
mcimadamore
date
Tue, 12 Mar 2013 16:02:43 +0000
changeset 1628
5ddecb91d843
parent 0
959103a6100f
permissions
-rw-r--r--

8009545: Graph inference: dependencies between inference variables should be set during incorporation
Summary: Move all transitivity checks into the incorporation round
Reviewed-by: jjg

     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  */
    24 /*
    25  * @test
    26  * @bug 8003280
    27  * @summary Add lambda tests
    28  *  check overload resolution and target type inference w.r.t. generic methods
    29  * @author  Maurizio Cimadamore
    30  * @run main TargetType03
    31  */
    32 import java.util.*;
    34 public class TargetType03 {
    36     interface Mapper<X,Y> {
    37         Y myMap(X a);
    38     }
    40     static class MapperList<A> extends ArrayList<A> {
    41         public <B> List<B> myMap(Mapper<A, B> mapper) {
    42             ArrayList<B> mappedList = new ArrayList<>();
    43             for (A elem : this) {
    44                 mappedList.add(mapper.myMap(elem));
    45             }
    46             return mappedList;
    47         };
    48     }
    50     public static void main(String[] args) {
    51         MapperList<Integer> numbers = new MapperList<>();
    52         numbers.add(1);
    53         numbers.add(2);
    54         numbers.add(3);
    55         numbers.add(4);
    56         numbers.add(5);
    57         List<Integer> sqNumbers = numbers.myMap(a -> a * a);
    58         //check invariants
    59         if (numbers.size() != sqNumbers.size()) {
    60             throw new AssertionError();
    61         }
    62         for (int i = 0; i < numbers.size() ; i ++) {
    63             if (sqNumbers.get(i) != Math.pow(numbers.get(i), 2)) {
    64                 throw new AssertionError();
    65             }
    66         }
    67     }
    68 }

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