1 /*
2  * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4  *
5  * This code is free software; you can redistribute it and/or modify it
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7  * published by the Free Software Foundation.
8  *
9  * This code is distributed in the hope that it will be useful, but WITHOUT
10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12  * version 2 for more details (a copy is included in the LICENSE file that
13  * accompanied this code).
14  *
15  * You should have received a copy of the GNU General Public License version
16  * 2 along with this work; if not, write to the Free Software Foundation,
17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18  *
19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20  * or visit www.oracle.com if you need additional information or have any
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22  */
23 
24 /*
25  * @test
26  * @bug 8177466
27  * @summary Add compiler support for local variable type-inference
28  * @modules jdk.compiler/com.sun.source.tree
29  *          jdk.compiler/com.sun.source.util
30  *          jdk.compiler/com.sun.tools.javac.api
31  *          jdk.compiler/com.sun.tools.javac.code
32  *          jdk.compiler/com.sun.tools.javac.util
33  * @build LocalVariableInferenceTester
34  * @run main LocalVariableInferenceTester ReferenceTypeTest.java
35  */
36 class ReferenceTypeTest {
37 
38     static final String STRING = "java.lang.String";
39     static final String FOO = "ReferenceTypeTest.Foo";
40 
test()41     void test() {
42         @InferredType(STRING)
43         var s = "";
44         for (@InferredType(STRING) var s2 = "" ; ; ) { break; }
45         for (@InferredType(STRING) var s2 : stringArray()) { break; }
46         for (@InferredType(STRING) var s2 : stringIterable()) { break; }
47         try (@InferredType(FOO) var s2 = new Foo()) { } finally { }
48         try (@InferredType(FOO) var s2 = new Foo(); @InferredType(FOO) var s3 = new Foo()) { } finally { }
49     }
50 
stringArray()51     String[] stringArray() { return null; }
stringIterable()52     Iterable<String> stringIterable() { return null; }
53 
54     static class Foo implements AutoCloseable {
55         @Override
close()56         public void close() { }
57     }
58 }
59