jdk8-mips64-public/langtools: test/tools/javac/lambda/methodReferenceExecution/MethodReferenceTestVarArgsSuperDefault.java@c09b7234cded

8012556: Implement lambda methods on interfaces as static
8006140: Javac NPE compiling Lambda expression on initialization expression of static field in interface
Summary: Lambdas occurring in static contexts or those not needing instance information should be generated into static methods. This has long been the case for classes. However, as a work-around to the lack of support for statics on interfaces, interface lambda methods have been generated into default methods. For lambdas in interface static contexts (fields and static methods) this causes an NPE in javac because there is no 'this'. MethodHandles now support static methods on interfaces. This changeset allows lambda methods to be generated as static interface methods. An existing bug in Hotspot (8013875) is exposed in a test when the "-esa" flag is used. This test and another test that already exposed this bug have been marked with @ignore.
Reviewed-by: mcimadamore

     1 /*

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     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

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     8  * particular file as subject to the "Classpath" exception as provided

     9  * by Oracle in the LICENSE file that accompanied this code.

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    11  * This code is distributed in the hope that it will be useful, but WITHOUT

    12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    14  * version 2 for more details (a copy is included in the LICENSE file that

    15  * accompanied this code).

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    19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    20  *

    21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

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    26 /**

    27  * @test

    28  * @bug 8003639

    29  * @summary convert lambda testng tests to jtreg and add them

    30  * @run testng MethodReferenceTestVarArgsSuperDefault

    31  */

    33 import org.testng.annotations.Test;

    34 import java.lang.reflect.Array;

    36 import static org.testng.Assert.assertEquals;

    38 /**

    39  * @author Robert Field

    40  */

    42 interface MethodReferenceTestVarArgsSuperDefault_I {

    44     default String xvI(Integer... vi) {

    45         StringBuilder sb = new StringBuilder("xvI:");

    46         for (Integer i : vi) {

    47             sb.append(i);

    48             sb.append("-");

    49         }

    50         return sb.toString();

    51     }

    53     default String xIvI(Integer f, Integer... vi) {

    54         StringBuilder sb = new StringBuilder("xIvI:");

    55         sb.append(f);

    56         for (Integer i : vi) {

    57             sb.append(i);

    58             sb.append("-");

    59         }

    60         return sb.toString();

    61     }

    63     default String xvi(int... vi) {

    64         int sum = 0;

    65         for (int i : vi) {

    66             sum += i;

    67         }

    68         return "xvi:" + sum;

    69     }

    71     default String xIvi(Integer f, int... vi) {

    72         int sum = 0;

    73         for (int i : vi) {

    74             sum += i;

    75         }

    76         return "xIvi:(" + f + ")" + sum;

    77     }

    79     default String xvO(Object... vi) {

    80         StringBuilder sb = new StringBuilder("xvO:");

    81         for (Object i : vi) {

    82             if (i.getClass().isArray()) {

    83                 sb.append("[");

    84                 int len = Array.getLength(i);

    85                 for (int x = 0; x < len; ++x)  {

    86                     sb.append(Array.get(i, x));

    87                     sb.append(",");

    88                 }

    89                 sb.append("]");

    91             } else {

    92                 sb.append(i);

    93             }

    94             sb.append("*");

    95         }

    96         return sb.toString();

    97     }

    98 }

   100 @Test

   101 public class MethodReferenceTestVarArgsSuperDefault implements MethodReferenceTestVarArgsSuperDefault_I {

   103     interface DSPRII { String m(Integer a, Integer b); }

   105     interface DSPRiii { String m(int a, int b, int c); }

   107     interface DSPRi { String m(int a); }

   109     interface DSPRaO { String m(Object[] a); }

   111     interface DSPRai { String m(int[] a); }

   113     interface DSPRvi { String m(int... va); }

   115     // These should be processed as var args

   117     public void testVarArgsSPRSuperclass() {

   118         DSPRII q;

   120         q = MethodReferenceTestVarArgsSuperDefault_I.super::xvO;

   121         assertEquals(q.m(55,66), "xvO:55*66*");

   122     }

   124     public void testVarArgsSPRArray() {

   125         DSPRai q;

   127         q = MethodReferenceTestVarArgsSuperDefault_I.super::xvO;

   128         assertEquals(q.m(new int[] { 55,66 } ), "xvO:[55,66,]*");

   129     }

   131     public void testVarArgsSPRII() {

   132         DSPRII q;

   134         q = MethodReferenceTestVarArgsSuperDefault_I.super::xvI;

   135         assertEquals(q.m(33,7), "xvI:33-7-");

   137         q = MethodReferenceTestVarArgsSuperDefault_I.super::xIvI;

   138         assertEquals(q.m(50,40), "xIvI:5040-");

   140         q = MethodReferenceTestVarArgsSuperDefault_I.super::xvi;

   141         assertEquals(q.m(100,23), "xvi:123");

   143         q = MethodReferenceTestVarArgsSuperDefault_I.super::xIvi;

   144         assertEquals(q.m(9,21), "xIvi:(9)21");

   145     }

   147     public void testVarArgsSPRiii() {

   148         DSPRiii q;

   150         q = MethodReferenceTestVarArgsSuperDefault_I.super::xvI;

   151         assertEquals(q.m(3, 2, 1), "xvI:3-2-1-");

   153         q = MethodReferenceTestVarArgsSuperDefault_I.super::xIvI;

   154         assertEquals(q.m(888, 99, 2), "xIvI:88899-2-");

   156         q = MethodReferenceTestVarArgsSuperDefault_I.super::xvi;

   157         assertEquals(q.m(900,80,7), "xvi:987");

   159         q = MethodReferenceTestVarArgsSuperDefault_I.super::xIvi;

   160         assertEquals(q.m(333,27, 72), "xIvi:(333)99");

   161     }

   163     public void testVarArgsSPRi() {

   164         DSPRi q;

   166         q = MethodReferenceTestVarArgsSuperDefault_I.super::xvI;

   167         assertEquals(q.m(3), "xvI:3-");

   169         q = MethodReferenceTestVarArgsSuperDefault_I.super::xIvI;

   170         assertEquals(q.m(888), "xIvI:888");

   172         q = MethodReferenceTestVarArgsSuperDefault_I.super::xvi;

   173         assertEquals(q.m(900), "xvi:900");

   175         q = MethodReferenceTestVarArgsSuperDefault_I.super::xIvi;

   176         assertEquals(q.m(333), "xIvi:(333)0");

   177     }

   179     // These should NOT be processed as var args

   181     public void testVarArgsSPRaO() {

   182         DSPRaO q;

   184         q = MethodReferenceTestVarArgsSuperDefault_I.super::xvO;

   185         assertEquals(q.m(new String[] { "yo", "there", "dude" }), "xvO:yo*there*dude*");

   186     }

   189 }

Mercurial > jdk8-mips64-public > langtools / file revision

test/tools/javac/lambda/methodReferenceExecution/MethodReferenceTestVarArgsSuperDefault.java@c09b7234cded

test/tools/javac/lambda/methodReferenceExecution/MethodReferenceTestVarArgsSuperDefault.java