Mercurial > jdk8-mips64-public > langtools / annotate
test/tools/javac/lambda/lambdaExecution/TMapper.java@5ddecb91d843 (annotated)
test/tools/javac/lambda/lambdaExecution/TMapper.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
| aoqi@0 | 1 | /* |
| aoqi@0 | 2 | * Copyright (c) 2010, 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. Oracle designates this |
| aoqi@0 | 8 | * particular file as subject to the "Classpath" exception as provided |
| aoqi@0 | 9 | * by Oracle in the LICENSE file that accompanied this code. |
| aoqi@0 | 10 | * |
| aoqi@0 | 11 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| aoqi@0 | 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| aoqi@0 | 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| aoqi@0 | 14 | * version 2 for more details (a copy is included in the LICENSE file that |
| aoqi@0 | 15 | * accompanied this code). |
| aoqi@0 | 16 | * |
| aoqi@0 | 17 | * You should have received a copy of the GNU General Public License version |
| aoqi@0 | 18 | * 2 along with this work; if not, write to the Free Software Foundation, |
| aoqi@0 | 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| aoqi@0 | 20 | * |
| aoqi@0 | 21 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| aoqi@0 | 22 | * or visit www.oracle.com if you need additional information or have any |
| aoqi@0 | 23 | * questions. |
| aoqi@0 | 24 | */ |
| aoqi@0 | 25 | |
| aoqi@0 | 26 | /** |
| aoqi@0 | 27 | * Given an input object maps to an appropriate output object. A mapper may |
| aoqi@0 | 28 | * variously provide a mapping between types, object instances or keys and |
| aoqi@0 | 29 | * values or any other form of transformation upon the input. |
| aoqi@0 | 30 | * |
| aoqi@0 | 31 | * <p/>All mapper implementations are expected to: |
| aoqi@0 | 32 | * <ul> |
| aoqi@0 | 33 | * <li>Provide stable results such that for any {@code t} the result of two |
| aoqi@0 | 34 | * {@code map} operations are always equivalent. ie.<pre> |
| aoqi@0 | 35 | * Foo one = mapper.map(a); |
| aoqi@0 | 36 | * Foo two = mapper.map(a); |
| aoqi@0 | 37 | * |
| aoqi@0 | 38 | * assert one.equals(two) && two.equals(one); |
| aoqi@0 | 39 | * </pre></li> |
| aoqi@0 | 40 | * <li>Equivalent input objects should map to equivalent output objects. ie.<pre> |
| aoqi@0 | 41 | * assert a.equals(b); // a and b are equivalent |
| aoqi@0 | 42 | * |
| aoqi@0 | 43 | * Foo x = mapper.map(a); |
| aoqi@0 | 44 | * Foo y = mapper.map(b); |
| aoqi@0 | 45 | * |
| aoqi@0 | 46 | * assert x.equals(y); // their mapped results should be as equivalent. |
| aoqi@0 | 47 | * </pre></li> |
| aoqi@0 | 48 | * <li>The mapper should not modify the input object in any way that would |
| aoqi@0 | 49 | * change the mapping.</li> |
| aoqi@0 | 50 | * <li>When used for aggregate operations upon many elements mappers |
| aoqi@0 | 51 | * should not assume that the {@code map} operation will be called upon elements |
| aoqi@0 | 52 | * in any specific order.</li> |
| aoqi@0 | 53 | * </ul> |
| aoqi@0 | 54 | * |
| aoqi@0 | 55 | * @param <R> the type of output objects from {@code map} operation. May be the |
| aoqi@0 | 56 | * @param <T> the type of input objects provided to the {@code map} operation. |
| aoqi@0 | 57 | * same type as {@code <T>}. |
| aoqi@0 | 58 | */ |
| aoqi@0 | 59 | public interface TMapper<R, T> { |
| aoqi@0 | 60 | |
| aoqi@0 | 61 | /** |
| aoqi@0 | 62 | * Map the provided input object to an appropriate output object. |
| aoqi@0 | 63 | * |
| aoqi@0 | 64 | * @param t the input object to be mapped. |
| aoqi@0 | 65 | * @return the mapped output object. |
| aoqi@0 | 66 | */ |
| aoqi@0 | 67 | R map(T t); |
| aoqi@0 | 68 | } |
