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test/tools/javac/lambda/LambdaCapture02.java@5ddecb91d843 (annotated)

test/tools/javac/lambda/LambdaCapture02.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	* basic test for capture of non-mutable locals
aoqi@0	29	* @author Brian Goetz
aoqi@0	30	* @author Maurizio Cimadamore
aoqi@0	31	* @run main LambdaCapture02
aoqi@0	32	*/
aoqi@0	33
aoqi@0	34	public class LambdaCapture02 {
aoqi@0	35
aoqi@0	36	static int assertionCount = 0;
aoqi@0	37
aoqi@0	38	static void assertTrue(boolean cond) {
aoqi@0	39	assertionCount++;
aoqi@0	40	if (!cond)
aoqi@0	41	throw new AssertionError();
aoqi@0	42	}
aoqi@0	43
aoqi@0	44	interface Tester {
aoqi@0	45	void test();
aoqi@0	46	}
aoqi@0	47
aoqi@0	48	interface TU<T, U> {
aoqi@0	49	public T foo(U u);
aoqi@0	50	}
aoqi@0	51
aoqi@0	52	public static <T, U> T exec(TU<T, U> lambda, U x) {
aoqi@0	53	return lambda.foo(x);
aoqi@0	54	}
aoqi@0	55
aoqi@0	56	public Integer n = 5;
aoqi@0	57
aoqi@0	58	//Simple local capture
aoqi@0	59	void test1() {
aoqi@0	60	final Integer N = 1;
aoqi@0	61	int res = LambdaCapture02.<Integer,Integer>exec((Integer x) -> x + N, 3);
aoqi@0	62	assertTrue(4 == res);
aoqi@0	63	}
aoqi@0	64
aoqi@0	65	//Local capture with multiple scopes (anon class)
aoqi@0	66	void test2() {
aoqi@0	67	final Integer N = 1;
aoqi@0	68	new Tester() {
aoqi@0	69	public void test() {
aoqi@0	70	final Integer M = 2;
aoqi@0	71	int res = LambdaCapture02.<Integer,Integer>exec((Integer x) -> x + N + M, 3);
aoqi@0	72	assertTrue(6 == res);
aoqi@0	73	}
aoqi@0	74	}.test();
aoqi@0	75	}
aoqi@0	76
aoqi@0	77	//Local capture with multiple scopes (local class)
aoqi@0	78	void test3() {
aoqi@0	79	final Integer N = 1;
aoqi@0	80	class MyTester implements Tester {
aoqi@0	81	public void test() {
aoqi@0	82	final Integer M = 2;
aoqi@0	83	int res = LambdaCapture02.<Integer,Integer>exec((Integer x) -> x + N + M, 3);
aoqi@0	84	assertTrue(6 == res);
aoqi@0	85	}
aoqi@0	86	}
aoqi@0	87	new MyTester().test();
aoqi@0	88	}
aoqi@0	89
aoqi@0	90	//access to field from enclosing scope
aoqi@0	91	void test4() {
aoqi@0	92	final Integer N = 4;
aoqi@0	93	int res1 = LambdaCapture02.<Integer,Integer>exec((Integer x) -> x + n + N, 3);
aoqi@0	94	assertTrue(12 == res1);
aoqi@0	95	int res2 = LambdaCapture02.<Integer,Integer>exec((Integer x) -> x + LambdaCapture02.this.n + N, 3);
aoqi@0	96	assertTrue(12 == res2);
aoqi@0	97	}
aoqi@0	98
aoqi@0	99	public static void main(String[] args) {
aoqi@0	100	LambdaCapture02 t = new LambdaCapture02();
aoqi@0	101	t.test1();
aoqi@0	102	t.test2();
aoqi@0	103	t.test3();
aoqi@0	104	t.test4();
aoqi@0	105	assertTrue(assertionCount == 5);
aoqi@0	106	}
aoqi@0	107	}