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test/tools/javac/lambda/methodReference/MethodRef7.java@5ddecb91d843 (annotated)

test/tools/javac/lambda/methodReference/MethodRef7.java

Tue, 12 Mar 2013 16:02:43 +0000

author

mcimadamore

date

Tue, 12 Mar 2013 16:02:43 +0000

changeset 1628

5ddecb91d843

parent 0

959103a6100f

permissions

-rw-r--r--

8009545: Graph inference: dependencies between inference variables should be set during incorporation
Summary: Move all transitivity checks into the incorporation round
Reviewed-by: jjg

aoqi@0	1	/*
aoqi@0	2	* Copyright (c) 2011, 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.
aoqi@0	8	*
aoqi@0	9	* This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
aoqi@0	12	* version 2 for more details (a copy is included in the LICENSE file that
aoqi@0	13	* accompanied this code).
aoqi@0	14	*
aoqi@0	15	* You should have received a copy of the GNU General Public License version
aoqi@0	16	* 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0	18	*
aoqi@0	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0	20	* or visit www.oracle.com if you need additional information or have any
aoqi@0	21	* questions.
aoqi@0	22	*/
aoqi@0	23
aoqi@0	24	/**
aoqi@0	25	* @test
aoqi@0	26	* @bug 8003280
aoqi@0	27	* @summary Add lambda tests
aoqi@0	28	* Test that parameter types are inferred from SAM descriptor when method parameters are elided,
aoqi@0	29	with different types of method references
aoqi@0	30	* @compile MethodRef7.java
aoqi@0	31	* @run main MethodRef7
aoqi@0	32	*/
aoqi@0	33
aoqi@0	34	public class MethodRef7 {
aoqi@0	35
aoqi@0	36	static interface A {void m();}
aoqi@0	37
aoqi@0	38	static interface A2 {void m(int n);}
aoqi@0	39
aoqi@0	40	static interface B {String m();}
aoqi@0	41
aoqi@0	42	static interface B2 {String m(int n);}
aoqi@0	43
aoqi@0	44	static interface C {String m(MethodRef7 mr);}
aoqi@0	45
aoqi@0	46	static interface C2 {String m(MethodRef7 mr, int n);}
aoqi@0	47
aoqi@0	48	static interface D {Fee<String> m();}
aoqi@0	49
aoqi@0	50	static interface D2 {Fee<String> m(String s);}
aoqi@0	51
aoqi@0	52	static class Fee<T> {
aoqi@0	53
aoqi@0	54	public Fee() {
aoqi@0	55	System.out.println("Fee<T> instantiated");
aoqi@0	56	}
aoqi@0	57
aoqi@0	58	public Fee(String s) {
aoqi@0	59	System.out.println("Fee<T> instantiated: " + s);
aoqi@0	60	}
aoqi@0	61	}
aoqi@0	62
aoqi@0	63	private static void assertTrue(boolean cond) {
aoqi@0	64	if (!cond)
aoqi@0	65	throw new AssertionError();
aoqi@0	66	}
aoqi@0	67
aoqi@0	68	static void bar() {
aoqi@0	69	System.out.println("MethodRef_neg1.bar()");
aoqi@0	70	}
aoqi@0	71
aoqi@0	72	static void bar(int x) {
aoqi@0	73	System.out.println("MethodRef_neg1.bar(int) " + x);
aoqi@0	74	}
aoqi@0	75
aoqi@0	76	String wahoo() {
aoqi@0	77	return "wahoo";
aoqi@0	78	}
aoqi@0	79
aoqi@0	80	String wahoo(int x) {
aoqi@0	81	return "wahoo " + x;
aoqi@0	82	}
aoqi@0	83
aoqi@0	84	public static void main(String[] args) {
aoqi@0	85
aoqi@0	86	A a = MethodRef7::bar; //static reference to bar()
aoqi@0	87	a.m();
aoqi@0	88	A2 a2 = MethodRef7::bar; //static reference to bar(int x)
aoqi@0	89	a2.m(10);
aoqi@0	90
aoqi@0	91	MethodRef7 mr = new MethodRef7();
aoqi@0	92	B b = mr::wahoo; //instance reference to wahoo()
aoqi@0	93	assertTrue(b.m().equals("wahoo"));
aoqi@0	94	B2 b2 = mr::wahoo; //instance reference to wahoo(int x)
aoqi@0	95	assertTrue(b2.m(1).equals("wahoo 1"));
aoqi@0	96
aoqi@0	97	C c = MethodRef7::wahoo; //unbound reference to wahoo()
aoqi@0	98	assertTrue(c.m(mr).equals("wahoo"));
aoqi@0	99	C2 c2 = MethodRef7::wahoo; //unbound reference to wahoo(int x)
aoqi@0	100	assertTrue(c2.m(mr, 2).equals("wahoo 2"));
aoqi@0	101
aoqi@0	102	D d = Fee<String>::new; //constructor reference to Fee()
aoqi@0	103	D2 d2 = Fee<String>::new; //constructor reference to Fee(String s)
aoqi@0	104	}
aoqi@0	105	}