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

test/tools/javac/lambda/methodReferenceExecution/MethodReferenceTestNewInner.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 MethodReferenceTestNewInner
aoqi@0	31	*/
aoqi@0	32
aoqi@0	33	import org.testng.annotations.Test;
aoqi@0	34
aoqi@0	35	import static org.testng.Assert.assertEquals;
aoqi@0	36
aoqi@0	37	/**
aoqi@0	38	* @author Robert Field
aoqi@0	39	*/
aoqi@0	40
aoqi@0	41	@Test
aoqi@0	42	public class MethodReferenceTestNewInner {
aoqi@0	43
aoqi@0	44	String note = "NO NOTE";
aoqi@0	45
aoqi@0	46	interface M0<T> {
aoqi@0	47
aoqi@0	48	T m();
aoqi@0	49	}
aoqi@0	50
aoqi@0	51	interface MP<T> {
aoqi@0	52
aoqi@0	53	T m(MethodReferenceTestNewInner m);
aoqi@0	54	}
aoqi@0	55
aoqi@0	56	class N0 {
aoqi@0	57
aoqi@0	58	N0() {
aoqi@0	59	}
aoqi@0	60	}
aoqi@0	61
aoqi@0	62	interface M1<T> {
aoqi@0	63
aoqi@0	64	T m(Integer a);
aoqi@0	65	}
aoqi@0	66
aoqi@0	67	class N1 {
aoqi@0	68
aoqi@0	69	int i;
aoqi@0	70
aoqi@0	71	N1(int i) {
aoqi@0	72	this.i = i;
aoqi@0	73	}
aoqi@0	74	}
aoqi@0	75
aoqi@0	76	interface M2<T> {
aoqi@0	77
aoqi@0	78	T m(Integer n, String o);
aoqi@0	79	}
aoqi@0	80
aoqi@0	81	class N2 {
aoqi@0	82
aoqi@0	83	Number n;
aoqi@0	84	Object o;
aoqi@0	85
aoqi@0	86	N2(Number n, Object o) {
aoqi@0	87	this.n = n;
aoqi@0	88	this.o = o;
aoqi@0	89	}
aoqi@0	90
aoqi@0	91	public String toString() {
aoqi@0	92	return note + ":N2(" + n + "," + o + ")";
aoqi@0	93	}
aoqi@0	94	}
aoqi@0	95
aoqi@0	96	interface MV {
aoqi@0	97
aoqi@0	98	NV m(Integer ai, int i);
aoqi@0	99	}
aoqi@0	100
aoqi@0	101	class NV {
aoqi@0	102
aoqi@0	103	int i;
aoqi@0	104
aoqi@0	105	NV(int... v) {
aoqi@0	106	i = 0;
aoqi@0	107	for (int x : v) {
aoqi@0	108	i += x;
aoqi@0	109	}
aoqi@0	110	}
aoqi@0	111
aoqi@0	112	public String toString() {
aoqi@0	113	return note + ":NV(" + i + ")";
aoqi@0	114	}
aoqi@0	115	}
aoqi@0	116
aoqi@0	117	/* unbound constructor case not supported anymore (dropped by EG)
aoqi@0	118	public static void testConstructorReferenceP() {
aoqi@0	119	MP<N0> q;
aoqi@0	120
aoqi@0	121	q = N0::new;
aoqi@0	122	assertEquals(q.m(new MethodReferenceTestNewInner()).getClass().getSimpleName(), "N0");
aoqi@0	123	}
aoqi@0	124	*/
aoqi@0	125	public void testConstructorReference0() {
aoqi@0	126	M0<N0> q;
aoqi@0	127
aoqi@0	128	q = N0::new;
aoqi@0	129	assertEquals(q.m().getClass().getSimpleName(), "N0");
aoqi@0	130	}
aoqi@0	131
aoqi@0	132	public void testConstructorReference1() {
aoqi@0	133	M1<N1> q;
aoqi@0	134
aoqi@0	135	q = N1::new;
aoqi@0	136	assertEquals(q.m(14).getClass().getSimpleName(), "N1");
aoqi@0	137	}
aoqi@0	138
aoqi@0	139	public void testConstructorReference2() {
aoqi@0	140	M2<N2> q;
aoqi@0	141
aoqi@0	142	note = "T2";
aoqi@0	143	q = N2::new;
aoqi@0	144	assertEquals(q.m(7, "hi").toString(), "T2:N2(7,hi)");
aoqi@0	145	}
aoqi@0	146
aoqi@0	147	/***
aoqi@0	148	public void testConstructorReferenceVarArgs() {
aoqi@0	149	MV q;
aoqi@0	150
aoqi@0	151	note = "TVA";
aoqi@0	152	q = NV::new;
aoqi@0	153	assertEquals(q.m(5, 45).toString(), "TNV:NV(50)");
aoqi@0	154	}
aoqi@0	155	***/
aoqi@0	156
aoqi@0	157	}