jdk8-mips64-public/langtools: test/tools/javac/lambda/methodReferenceExecution/MethodReferenceTestVarArgsSuper.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 MethodReferenceTestVarArgsSuper

    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 class MethodReferenceTestVarArgsSuper_Sub {

    44     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     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     String xvi(int... vi) {

    64         int sum = 0;

    65         for (int i : vi) {

    66             sum += i;

    67         }

    68         return "xvi:" + sum;

    69     }

    71     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     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 MethodReferenceTestVarArgsSuper extends MethodReferenceTestVarArgsSuper_Sub {

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

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

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

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

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

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

   115     String xvI(Integer... vi) {

   116         return "ERROR";

   117     }

   119     String xIvI(Integer f, Integer... vi) {

   120         return "ERROR";

   121     }

   123     String xvi(int... vi) {

   124         return "ERROR";

   125     }

   127     String xIvi(Integer f, int... vi) {

   128         return "ERROR";

   129    }

   131     String xvO(Object... vi) {

   132         return "ERROR";

   133     }

   135     // These should be processed as var args

   137     public void testVarArgsSPRSuperclass() {

   138         SPRII q;

   140         q = super::xvO;

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

   142     }

   144     public void testVarArgsSPRArray() {

   145         SPRai q;

   147         q = super::xvO;

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

   149     }

   151     public void testVarArgsSPRII() {

   152         SPRII q;

   154         q = super::xvI;

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

   157         q = super::xIvI;

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

   160         q = super::xvi;

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

   163         q = super::xIvi;

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

   165     }

   167     public void testVarArgsSPRiii() {

   168         SPRiii q;

   170         q = super::xvI;

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

   173         q = super::xIvI;

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

   176         q = super::xvi;

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

   179         q = super::xIvi;

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

   181     }

   183     public void testVarArgsSPRi() {

   184         SPRi q;

   186         q = super::xvI;

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

   189         q = super::xIvI;

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

   192         q = super::xvi;

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

   195         q = super::xIvi;

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

   197     }

   199     // These should NOT be processed as var args

   201     public void testVarArgsSPRaO() {

   202         SPRaO q;

   204         q = super::xvO;

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

   206     }

   207 }

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

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

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