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test/tools/javac/lambda/methodReferenceExecution/MethodReferenceTestVarArgsExt.java@c09b7234cded (annotated)

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

Tue, 14 May 2013 11:11:09 -0700

author

rfield

date

Tue, 14 May 2013 11:11:09 -0700

changeset 1752

c09b7234cded

parent 0

959103a6100f

permissions

-rw-r--r--

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

aoqi@0	1	/*
aoqi@0	2	* Copyright (c) 2012, 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	* @test
aoqi@0	28	* @bug 8003639
aoqi@0	29	* @summary convert lambda testng tests to jtreg and add them
aoqi@0	30	* @run testng MethodReferenceTestVarArgsExt
aoqi@0	31	*/
aoqi@0	32
aoqi@0	33	import org.testng.annotations.Test;
aoqi@0	34	import java.lang.reflect.Array;
aoqi@0	35
aoqi@0	36	import static org.testng.Assert.assertEquals;
aoqi@0	37
aoqi@0	38	/**
aoqi@0	39	* @author Robert Field
aoqi@0	40	*/
aoqi@0	41
aoqi@0	42	interface NXII { String m(Integer a, Integer b); }
aoqi@0	43
aoqi@0	44	interface NXiii { String m(int a, int b, int c); }
aoqi@0	45
aoqi@0	46	interface NXi { String m(int a); }
aoqi@0	47
aoqi@0	48	interface NXaO { String m(Object[] a); }
aoqi@0	49
aoqi@0	50	interface NXai { String m(int[] a); }
aoqi@0	51
aoqi@0	52	interface NXvi { String m(int... va); }
aoqi@0	53
aoqi@0	54	@Test
aoqi@0	55	public class MethodReferenceTestVarArgsExt {
aoqi@0	56
aoqi@0	57	// These should be processed as var args
aoqi@0	58
aoqi@0	59	public void testVarArgsNXSuperclass() {
aoqi@0	60	NXII q;
aoqi@0	61
aoqi@0	62	q = (new Ext())::xvO;
aoqi@0	63	assertEquals(q.m(55,66), "xvO:55*66*");
aoqi@0	64	}
aoqi@0	65
aoqi@0	66	public void testVarArgsNXArray() {
aoqi@0	67	NXai q;
aoqi@0	68
aoqi@0	69	q = (new Ext())::xvO;
aoqi@0	70	assertEquals(q.m(new int[] { 55,66 } ), "xvO:[55,66,]*");
aoqi@0	71	}
aoqi@0	72
aoqi@0	73	public void testVarArgsNXII() {
aoqi@0	74	NXII q;
aoqi@0	75
aoqi@0	76	q = (new Ext())::xvI;
aoqi@0	77	assertEquals(q.m(33,7), "xvI:33-7-");
aoqi@0	78
aoqi@0	79	q = (new Ext())::xIvI;
aoqi@0	80	assertEquals(q.m(50,40), "xIvI:5040-");
aoqi@0	81
aoqi@0	82	q = (new Ext())::xvi;
aoqi@0	83	assertEquals(q.m(100,23), "xvi:123");
aoqi@0	84
aoqi@0	85	q = (new Ext())::xIvi;
aoqi@0	86	assertEquals(q.m(9,21), "xIvi:(9)21");
aoqi@0	87	}
aoqi@0	88
aoqi@0	89	public void testVarArgsNXiii() {
aoqi@0	90	NXiii q;
aoqi@0	91
aoqi@0	92	q = (new Ext())::xvI;
aoqi@0	93	assertEquals(q.m(3, 2, 1), "xvI:3-2-1-");
aoqi@0	94
aoqi@0	95	q = (new Ext())::xIvI;
aoqi@0	96	assertEquals(q.m(888, 99, 2), "xIvI:88899-2-");
aoqi@0	97
aoqi@0	98	q = (new Ext())::xvi;
aoqi@0	99	assertEquals(q.m(900,80,7), "xvi:987");
aoqi@0	100
aoqi@0	101	q = (new Ext())::xIvi;
aoqi@0	102	assertEquals(q.m(333,27, 72), "xIvi:(333)99");
aoqi@0	103	}
aoqi@0	104
aoqi@0	105	public void testVarArgsNXi() {
aoqi@0	106	NXi q;
aoqi@0	107
aoqi@0	108	q = (new Ext())::xvI;
aoqi@0	109	assertEquals(q.m(3), "xvI:3-");
aoqi@0	110
aoqi@0	111	q = (new Ext())::xIvI;
aoqi@0	112	assertEquals(q.m(888), "xIvI:888");
aoqi@0	113
aoqi@0	114	q = (new Ext())::xvi;
aoqi@0	115	assertEquals(q.m(900), "xvi:900");
aoqi@0	116
aoqi@0	117	q = (new Ext())::xIvi;
aoqi@0	118	assertEquals(q.m(333), "xIvi:(333)0");
aoqi@0	119	}
aoqi@0	120
aoqi@0	121	// These should NOT be processed as var args
aoqi@0	122
aoqi@0	123	public void testVarArgsNXaO() {
aoqi@0	124	NXaO q;
aoqi@0	125
aoqi@0	126	q = (new Ext())::xvO;
aoqi@0	127	assertEquals(q.m(new String[] { "yo", "there", "dude" }), "xvO:yo*there*dude*");
aoqi@0	128	}
aoqi@0	129
aoqi@0	130
aoqi@0	131	}
aoqi@0	132
aoqi@0	133	class Ext {
aoqi@0	134
aoqi@0	135	String xvI(Integer... vi) {
aoqi@0	136	StringBuilder sb = new StringBuilder("xvI:");
aoqi@0	137	for (Integer i : vi) {
aoqi@0	138	sb.append(i);
aoqi@0	139	sb.append("-");
aoqi@0	140	}
aoqi@0	141	return sb.toString();
aoqi@0	142	}
aoqi@0	143
aoqi@0	144	String xIvI(Integer f, Integer... vi) {
aoqi@0	145	StringBuilder sb = new StringBuilder("xIvI:");
aoqi@0	146	sb.append(f);
aoqi@0	147	for (Integer i : vi) {
aoqi@0	148	sb.append(i);
aoqi@0	149	sb.append("-");
aoqi@0	150	}
aoqi@0	151	return sb.toString();
aoqi@0	152	}
aoqi@0	153
aoqi@0	154	String xvi(int... vi) {
aoqi@0	155	int sum = 0;
aoqi@0	156	for (int i : vi) {
aoqi@0	157	sum += i;
aoqi@0	158	}
aoqi@0	159	return "xvi:" + sum;
aoqi@0	160	}
aoqi@0	161
aoqi@0	162	String xIvi(Integer f, int... vi) {
aoqi@0	163	int sum = 0;
aoqi@0	164	for (int i : vi) {
aoqi@0	165	sum += i;
aoqi@0	166	}
aoqi@0	167	return "xIvi:(" + f + ")" + sum;
aoqi@0	168	}
aoqi@0	169
aoqi@0	170	String xvO(Object... vi) {
aoqi@0	171	StringBuilder sb = new StringBuilder("xvO:");
aoqi@0	172	for (Object i : vi) {
aoqi@0	173	if (i.getClass().isArray()) {
aoqi@0	174	sb.append("[");
aoqi@0	175	int len = Array.getLength(i);
aoqi@0	176	for (int x = 0; x < len; ++x) {
aoqi@0	177	sb.append(Array.get(i, x));
aoqi@0	178	sb.append(",");
aoqi@0	179	}
aoqi@0	180	sb.append("]");
aoqi@0	181
aoqi@0	182	} else {
aoqi@0	183	sb.append(i);
aoqi@0	184	}
aoqi@0	185	sb.append("*");
aoqi@0	186	}
aoqi@0	187	return sb.toString();
aoqi@0	188	}
aoqi@0	189
aoqi@0	190
aoqi@0	191	}