• file
• revisions
• annotate
• diff
• comparison
• raw

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

test/tools/javac/lambda/methodReferenceExecution/MethodReferenceTestVarArgs.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 MethodReferenceTestVarArgs
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	@Test
aoqi@0	43	public class MethodReferenceTestVarArgs {
aoqi@0	44
aoqi@0	45	interface SII {
aoqi@0	46
aoqi@0	47	String m(Integer a, Integer b);
aoqi@0	48	}
aoqi@0	49
aoqi@0	50	interface Siii {
aoqi@0	51
aoqi@0	52	String m(int a, int b, int c);
aoqi@0	53	}
aoqi@0	54
aoqi@0	55	interface Si {
aoqi@0	56
aoqi@0	57	String m(int a);
aoqi@0	58	}
aoqi@0	59
aoqi@0	60	interface SaO {
aoqi@0	61
aoqi@0	62	String m(Object[] a);
aoqi@0	63	}
aoqi@0	64
aoqi@0	65	interface Sai {
aoqi@0	66
aoqi@0	67	String m(int[] a);
aoqi@0	68	}
aoqi@0	69
aoqi@0	70	interface Svi {
aoqi@0	71
aoqi@0	72	String m(int... va);
aoqi@0	73	}
aoqi@0	74
aoqi@0	75	// These should be processed as var args
aoqi@0	76
aoqi@0	77	static String xvI(Integer... vi) {
aoqi@0	78	StringBuilder sb = new StringBuilder("xvI:");
aoqi@0	79	for (Integer i : vi) {
aoqi@0	80	sb.append(i);
aoqi@0	81	sb.append("-");
aoqi@0	82	}
aoqi@0	83	return sb.toString();
aoqi@0	84	}
aoqi@0	85
aoqi@0	86	static String xIvI(Integer f, Integer... vi) {
aoqi@0	87	StringBuilder sb = new StringBuilder("xIvI:");
aoqi@0	88	sb.append(f);
aoqi@0	89	for (Integer i : vi) {
aoqi@0	90	sb.append(i);
aoqi@0	91	sb.append("-");
aoqi@0	92	}
aoqi@0	93	return sb.toString();
aoqi@0	94	}
aoqi@0	95
aoqi@0	96	static String xvi(int... vi) {
aoqi@0	97	int sum = 0;
aoqi@0	98	for (int i : vi) {
aoqi@0	99	sum += i;
aoqi@0	100	}
aoqi@0	101	return "xvi:" + sum;
aoqi@0	102	}
aoqi@0	103
aoqi@0	104	static String xIvi(Integer f, int... vi) {
aoqi@0	105	int sum = 0;
aoqi@0	106	for (int i : vi) {
aoqi@0	107	sum += i;
aoqi@0	108	}
aoqi@0	109	return "xIvi:(" + f + ")" + sum;
aoqi@0	110	}
aoqi@0	111
aoqi@0	112	static String xvO(Object... vi) {
aoqi@0	113	StringBuilder sb = new StringBuilder("xvO:");
aoqi@0	114	for (Object i : vi) {
aoqi@0	115	if (i.getClass().isArray()) {
aoqi@0	116	sb.append("[");
aoqi@0	117	int len = Array.getLength(i);
aoqi@0	118	for (int x = 0; x < len; ++x) {
aoqi@0	119	sb.append(Array.get(i, x));
aoqi@0	120	sb.append(",");
aoqi@0	121	}
aoqi@0	122	sb.append("]");
aoqi@0	123
aoqi@0	124	} else {
aoqi@0	125	sb.append(i);
aoqi@0	126	}
aoqi@0	127	sb.append("*");
aoqi@0	128	}
aoqi@0	129	return sb.toString();
aoqi@0	130	}
aoqi@0	131
aoqi@0	132	public void testVarArgsSuperclass() {
aoqi@0	133	SII q;
aoqi@0	134
aoqi@0	135	q = MethodReferenceTestVarArgs::xvO;
aoqi@0	136	assertEquals(q.m(55,66), "xvO:55*66*");
aoqi@0	137	}
aoqi@0	138
aoqi@0	139	public void testVarArgsArray() {
aoqi@0	140	Sai q;
aoqi@0	141
aoqi@0	142	q = MethodReferenceTestVarArgs::xvO;
aoqi@0	143	assertEquals(q.m(new int[] { 55,66 } ), "xvO:[55,66,]*");
aoqi@0	144	}
aoqi@0	145
aoqi@0	146	public void testVarArgsII() {
aoqi@0	147	SII q;
aoqi@0	148
aoqi@0	149	q = MethodReferenceTestVarArgs::xvI;
aoqi@0	150	assertEquals(q.m(33,7), "xvI:33-7-");
aoqi@0	151
aoqi@0	152	q = MethodReferenceTestVarArgs::xIvI;
aoqi@0	153	assertEquals(q.m(50,40), "xIvI:5040-");
aoqi@0	154
aoqi@0	155	q = MethodReferenceTestVarArgs::xvi;
aoqi@0	156	assertEquals(q.m(100,23), "xvi:123");
aoqi@0	157
aoqi@0	158	q = MethodReferenceTestVarArgs::xIvi;
aoqi@0	159	assertEquals(q.m(9,21), "xIvi:(9)21");
aoqi@0	160	}
aoqi@0	161
aoqi@0	162	public void testVarArgsiii() {
aoqi@0	163	Siii q;
aoqi@0	164
aoqi@0	165	q = MethodReferenceTestVarArgs::xvI;
aoqi@0	166	assertEquals(q.m(3, 2, 1), "xvI:3-2-1-");
aoqi@0	167
aoqi@0	168	q = MethodReferenceTestVarArgs::xIvI;
aoqi@0	169	assertEquals(q.m(888, 99, 2), "xIvI:88899-2-");
aoqi@0	170
aoqi@0	171	q = MethodReferenceTestVarArgs::xvi;
aoqi@0	172	assertEquals(q.m(900,80,7), "xvi:987");
aoqi@0	173
aoqi@0	174	q = MethodReferenceTestVarArgs::xIvi;
aoqi@0	175	assertEquals(q.m(333,27, 72), "xIvi:(333)99");
aoqi@0	176	}
aoqi@0	177
aoqi@0	178	public void testVarArgsi() {
aoqi@0	179	Si q;
aoqi@0	180
aoqi@0	181	q = MethodReferenceTestVarArgs::xvI;
aoqi@0	182	assertEquals(q.m(3), "xvI:3-");
aoqi@0	183
aoqi@0	184	q = MethodReferenceTestVarArgs::xIvI;
aoqi@0	185	assertEquals(q.m(888), "xIvI:888");
aoqi@0	186
aoqi@0	187	q = MethodReferenceTestVarArgs::xvi;
aoqi@0	188	assertEquals(q.m(900), "xvi:900");
aoqi@0	189
aoqi@0	190	q = MethodReferenceTestVarArgs::xIvi;
aoqi@0	191	assertEquals(q.m(333), "xIvi:(333)0");
aoqi@0	192	}
aoqi@0	193
aoqi@0	194	// These should NOT be processed as var args
aoqi@0	195
aoqi@0	196	public void testVarArgsaO() {
aoqi@0	197	SaO q;
aoqi@0	198
aoqi@0	199	q = MethodReferenceTestVarArgs::xvO;
aoqi@0	200	assertEquals(q.m(new String[] { "yo", "there", "dude" }), "xvO:yo*there*dude*");
aoqi@0	201	}
aoqi@0	202
aoqi@0	203
aoqi@0	204	}