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

test/tools/javac/lambda/methodReferenceExecution/MethodReferenceTestVarArgsThis.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 MethodReferenceTestVarArgsThis
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 NsII { String m(Integer a, Integer b); }
aoqi@0	43
aoqi@0	44	interface Nsiii { String m(int a, int b, int c); }
aoqi@0	45
aoqi@0	46	interface Nsi { String m(int a); }
aoqi@0	47
aoqi@0	48	interface NsaO { String m(Object[] a); }
aoqi@0	49
aoqi@0	50	interface Nsai { String m(int[] a); }
aoqi@0	51
aoqi@0	52	interface Nsvi { String m(int... va); }
aoqi@0	53
aoqi@0	54	@Test
aoqi@0	55	public class MethodReferenceTestVarArgsThis {
aoqi@0	56
aoqi@0	57	// These should be processed as var args
aoqi@0	58
aoqi@0	59	String xvI(Integer... vi) {
aoqi@0	60	StringBuilder sb = new StringBuilder("xvI:");
aoqi@0	61	for (Integer i : vi) {
aoqi@0	62	sb.append(i);
aoqi@0	63	sb.append("-");
aoqi@0	64	}
aoqi@0	65	return sb.toString();
aoqi@0	66	}
aoqi@0	67
aoqi@0	68	String xIvI(Integer f, Integer... vi) {
aoqi@0	69	StringBuilder sb = new StringBuilder("xIvI:");
aoqi@0	70	sb.append(f);
aoqi@0	71	for (Integer i : vi) {
aoqi@0	72	sb.append(i);
aoqi@0	73	sb.append("-");
aoqi@0	74	}
aoqi@0	75	return sb.toString();
aoqi@0	76	}
aoqi@0	77
aoqi@0	78	String xvi(int... vi) {
aoqi@0	79	int sum = 0;
aoqi@0	80	for (int i : vi) {
aoqi@0	81	sum += i;
aoqi@0	82	}
aoqi@0	83	return "xvi:" + sum;
aoqi@0	84	}
aoqi@0	85
aoqi@0	86	String xIvi(Integer f, int... vi) {
aoqi@0	87	int sum = 0;
aoqi@0	88	for (int i : vi) {
aoqi@0	89	sum += i;
aoqi@0	90	}
aoqi@0	91	return "xIvi:(" + f + ")" + sum;
aoqi@0	92	}
aoqi@0	93
aoqi@0	94	String xvO(Object... vi) {
aoqi@0	95	StringBuilder sb = new StringBuilder("xvO:");
aoqi@0	96	for (Object i : vi) {
aoqi@0	97	if (i.getClass().isArray()) {
aoqi@0	98	sb.append("[");
aoqi@0	99	int len = Array.getLength(i);
aoqi@0	100	for (int x = 0; x < len; ++x) {
aoqi@0	101	sb.append(Array.get(i, x));
aoqi@0	102	sb.append(",");
aoqi@0	103	}
aoqi@0	104	sb.append("]");
aoqi@0	105
aoqi@0	106	} else {
aoqi@0	107	sb.append(i);
aoqi@0	108	}
aoqi@0	109	sb.append("*");
aoqi@0	110	}
aoqi@0	111	return sb.toString();
aoqi@0	112	}
aoqi@0	113
aoqi@0	114	public void testVarArgsNsSuperclass() {
aoqi@0	115	NsII q;
aoqi@0	116
aoqi@0	117	q = this::xvO;
aoqi@0	118	assertEquals(q.m(55,66), "xvO:55*66*");
aoqi@0	119	}
aoqi@0	120
aoqi@0	121	public void testVarArgsNsArray() {
aoqi@0	122	Nsai q;
aoqi@0	123
aoqi@0	124	q = this::xvO;
aoqi@0	125	assertEquals(q.m(new int[] { 55,66 } ), "xvO:[55,66,]*");
aoqi@0	126	}
aoqi@0	127
aoqi@0	128	public void testVarArgsNsII() {
aoqi@0	129	NsII q;
aoqi@0	130
aoqi@0	131	q = this::xvI;
aoqi@0	132	assertEquals(q.m(33,7), "xvI:33-7-");
aoqi@0	133
aoqi@0	134	q = this::xIvI;
aoqi@0	135	assertEquals(q.m(50,40), "xIvI:5040-");
aoqi@0	136
aoqi@0	137	q = this::xvi;
aoqi@0	138	assertEquals(q.m(100,23), "xvi:123");
aoqi@0	139
aoqi@0	140	q = this::xIvi;
aoqi@0	141	assertEquals(q.m(9,21), "xIvi:(9)21");
aoqi@0	142	}
aoqi@0	143
aoqi@0	144	public void testVarArgsNsiii() {
aoqi@0	145	Nsiii q;
aoqi@0	146
aoqi@0	147	q = this::xvI;
aoqi@0	148	assertEquals(q.m(3, 2, 1), "xvI:3-2-1-");
aoqi@0	149
aoqi@0	150	q = this::xIvI;
aoqi@0	151	assertEquals(q.m(888, 99, 2), "xIvI:88899-2-");
aoqi@0	152
aoqi@0	153	q = this::xvi;
aoqi@0	154	assertEquals(q.m(900,80,7), "xvi:987");
aoqi@0	155
aoqi@0	156	q = this::xIvi;
aoqi@0	157	assertEquals(q.m(333,27, 72), "xIvi:(333)99");
aoqi@0	158	}
aoqi@0	159
aoqi@0	160	public void testVarArgsNsi() {
aoqi@0	161	Nsi q;
aoqi@0	162
aoqi@0	163	q = this::xvI;
aoqi@0	164	assertEquals(q.m(3), "xvI:3-");
aoqi@0	165
aoqi@0	166	q = this::xIvI;
aoqi@0	167	assertEquals(q.m(888), "xIvI:888");
aoqi@0	168
aoqi@0	169	q = this::xvi;
aoqi@0	170	assertEquals(q.m(900), "xvi:900");
aoqi@0	171
aoqi@0	172	q = this::xIvi;
aoqi@0	173	assertEquals(q.m(333), "xIvi:(333)0");
aoqi@0	174	}
aoqi@0	175
aoqi@0	176	// These should NOT be processed as var args
aoqi@0	177
aoqi@0	178	public void testVarArgsNsaO() {
aoqi@0	179	NsaO q;
aoqi@0	180
aoqi@0	181	q = this::xvO;
aoqi@0	182	assertEquals(q.m(new String[] { "yo", "there", "dude" }), "xvO:yo*there*dude*");
aoqi@0	183	}
aoqi@0	184
aoqi@0	185
aoqi@0	186	}