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

test/tools/javac/lambda/methodReferenceExecution/MethodReferenceTestVarArgsSuperDefault.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 MethodReferenceTestVarArgsSuperDefault
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 MethodReferenceTestVarArgsSuperDefault_I {
aoqi@0	43
aoqi@0	44	default String xvI(Integer... vi) {
aoqi@0	45	StringBuilder sb = new StringBuilder("xvI:");
aoqi@0	46	for (Integer i : vi) {
aoqi@0	47	sb.append(i);
aoqi@0	48	sb.append("-");
aoqi@0	49	}
aoqi@0	50	return sb.toString();
aoqi@0	51	}
aoqi@0	52
aoqi@0	53	default String xIvI(Integer f, Integer... vi) {
aoqi@0	54	StringBuilder sb = new StringBuilder("xIvI:");
aoqi@0	55	sb.append(f);
aoqi@0	56	for (Integer i : vi) {
aoqi@0	57	sb.append(i);
aoqi@0	58	sb.append("-");
aoqi@0	59	}
aoqi@0	60	return sb.toString();
aoqi@0	61	}
aoqi@0	62
aoqi@0	63	default String xvi(int... vi) {
aoqi@0	64	int sum = 0;
aoqi@0	65	for (int i : vi) {
aoqi@0	66	sum += i;
aoqi@0	67	}
aoqi@0	68	return "xvi:" + sum;
aoqi@0	69	}
aoqi@0	70
aoqi@0	71	default String xIvi(Integer f, int... vi) {
aoqi@0	72	int sum = 0;
aoqi@0	73	for (int i : vi) {
aoqi@0	74	sum += i;
aoqi@0	75	}
aoqi@0	76	return "xIvi:(" + f + ")" + sum;
aoqi@0	77	}
aoqi@0	78
aoqi@0	79	default String xvO(Object... vi) {
aoqi@0	80	StringBuilder sb = new StringBuilder("xvO:");
aoqi@0	81	for (Object i : vi) {
aoqi@0	82	if (i.getClass().isArray()) {
aoqi@0	83	sb.append("[");
aoqi@0	84	int len = Array.getLength(i);
aoqi@0	85	for (int x = 0; x < len; ++x) {
aoqi@0	86	sb.append(Array.get(i, x));
aoqi@0	87	sb.append(",");
aoqi@0	88	}
aoqi@0	89	sb.append("]");
aoqi@0	90
aoqi@0	91	} else {
aoqi@0	92	sb.append(i);
aoqi@0	93	}
aoqi@0	94	sb.append("*");
aoqi@0	95	}
aoqi@0	96	return sb.toString();
aoqi@0	97	}
aoqi@0	98	}
aoqi@0	99
aoqi@0	100	@Test
aoqi@0	101	public class MethodReferenceTestVarArgsSuperDefault implements MethodReferenceTestVarArgsSuperDefault_I {
aoqi@0	102
aoqi@0	103	interface DSPRII { String m(Integer a, Integer b); }
aoqi@0	104
aoqi@0	105	interface DSPRiii { String m(int a, int b, int c); }
aoqi@0	106
aoqi@0	107	interface DSPRi { String m(int a); }
aoqi@0	108
aoqi@0	109	interface DSPRaO { String m(Object[] a); }
aoqi@0	110
aoqi@0	111	interface DSPRai { String m(int[] a); }
aoqi@0	112
aoqi@0	113	interface DSPRvi { String m(int... va); }
aoqi@0	114
aoqi@0	115	// These should be processed as var args
aoqi@0	116
aoqi@0	117	public void testVarArgsSPRSuperclass() {
aoqi@0	118	DSPRII q;
aoqi@0	119
aoqi@0	120	q = MethodReferenceTestVarArgsSuperDefault_I.super::xvO;
aoqi@0	121	assertEquals(q.m(55,66), "xvO:55*66*");
aoqi@0	122	}
aoqi@0	123
aoqi@0	124	public void testVarArgsSPRArray() {
aoqi@0	125	DSPRai q;
aoqi@0	126
aoqi@0	127	q = MethodReferenceTestVarArgsSuperDefault_I.super::xvO;
aoqi@0	128	assertEquals(q.m(new int[] { 55,66 } ), "xvO:[55,66,]*");
aoqi@0	129	}
aoqi@0	130
aoqi@0	131	public void testVarArgsSPRII() {
aoqi@0	132	DSPRII q;
aoqi@0	133
aoqi@0	134	q = MethodReferenceTestVarArgsSuperDefault_I.super::xvI;
aoqi@0	135	assertEquals(q.m(33,7), "xvI:33-7-");
aoqi@0	136
aoqi@0	137	q = MethodReferenceTestVarArgsSuperDefault_I.super::xIvI;
aoqi@0	138	assertEquals(q.m(50,40), "xIvI:5040-");
aoqi@0	139
aoqi@0	140	q = MethodReferenceTestVarArgsSuperDefault_I.super::xvi;
aoqi@0	141	assertEquals(q.m(100,23), "xvi:123");
aoqi@0	142
aoqi@0	143	q = MethodReferenceTestVarArgsSuperDefault_I.super::xIvi;
aoqi@0	144	assertEquals(q.m(9,21), "xIvi:(9)21");
aoqi@0	145	}
aoqi@0	146
aoqi@0	147	public void testVarArgsSPRiii() {
aoqi@0	148	DSPRiii q;
aoqi@0	149
aoqi@0	150	q = MethodReferenceTestVarArgsSuperDefault_I.super::xvI;
aoqi@0	151	assertEquals(q.m(3, 2, 1), "xvI:3-2-1-");
aoqi@0	152
aoqi@0	153	q = MethodReferenceTestVarArgsSuperDefault_I.super::xIvI;
aoqi@0	154	assertEquals(q.m(888, 99, 2), "xIvI:88899-2-");
aoqi@0	155
aoqi@0	156	q = MethodReferenceTestVarArgsSuperDefault_I.super::xvi;
aoqi@0	157	assertEquals(q.m(900,80,7), "xvi:987");
aoqi@0	158
aoqi@0	159	q = MethodReferenceTestVarArgsSuperDefault_I.super::xIvi;
aoqi@0	160	assertEquals(q.m(333,27, 72), "xIvi:(333)99");
aoqi@0	161	}
aoqi@0	162
aoqi@0	163	public void testVarArgsSPRi() {
aoqi@0	164	DSPRi q;
aoqi@0	165
aoqi@0	166	q = MethodReferenceTestVarArgsSuperDefault_I.super::xvI;
aoqi@0	167	assertEquals(q.m(3), "xvI:3-");
aoqi@0	168
aoqi@0	169	q = MethodReferenceTestVarArgsSuperDefault_I.super::xIvI;
aoqi@0	170	assertEquals(q.m(888), "xIvI:888");
aoqi@0	171
aoqi@0	172	q = MethodReferenceTestVarArgsSuperDefault_I.super::xvi;
aoqi@0	173	assertEquals(q.m(900), "xvi:900");
aoqi@0	174
aoqi@0	175	q = MethodReferenceTestVarArgsSuperDefault_I.super::xIvi;
aoqi@0	176	assertEquals(q.m(333), "xIvi:(333)0");
aoqi@0	177	}
aoqi@0	178
aoqi@0	179	// These should NOT be processed as var args
aoqi@0	180
aoqi@0	181	public void testVarArgsSPRaO() {
aoqi@0	182	DSPRaO q;
aoqi@0	183
aoqi@0	184	q = MethodReferenceTestVarArgsSuperDefault_I.super::xvO;
aoqi@0	185	assertEquals(q.m(new String[] { "yo", "there", "dude" }), "xvO:yo*there*dude*");
aoqi@0	186	}
aoqi@0	187
aoqi@0	188
aoqi@0	189	}