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 6 * under the terms of the GNU General Public License version 2 only, as 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 21 * questions. 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