/* * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ /* * @test * @bug 8177466 * @summary Add compiler support for local variable type-inference * @modules jdk.compiler/com.sun.source.tree * jdk.compiler/com.sun.source.util * jdk.compiler/com.sun.tools.javac.api * jdk.compiler/com.sun.tools.javac.code * jdk.compiler/com.sun.tools.javac.util * @build LocalVariableInferenceTester * @run main LocalVariableInferenceTester NonDenotableTest.java */ import java.util.List; class NonDenotableTest { static final String OBJECT = "java.lang.Object"; static final String STRING = "java.lang.String"; static final String ANON_OBJECT = "#ANON(java.lang.Object)"; static final String ANON_RUNNABLE = "#ANON(java.lang.Object,java.lang.Runnable)"; static final String LIST_EXT = "java.util.List<? extends java.lang.String>"; static final String LIST_SUP = "java.util.List<? super java.lang.String>"; static final String LIST_UNB = "java.util.List<?>"; static final String COMP_UNB = "java.lang.Comparable<?>"; static final String LIST_EXT_COMP_UNB = "java.util.List<? extends java.lang.Comparable<?>>"; static final String LIST_SUP_COMP_UNB = "java.util.List<? super java.lang.Comparable<?>>"; static final String INT_INTEGER_DOUBLE = "#INT(java.lang.Number,java.lang.Comparable<? extends java.lang.Number&java.lang.Comparable<?>>)"; void testExtends() { @InferredType(LIST_EXT) var s = extString(); for (@InferredType(LIST_EXT) var s2 = extString() ; ; ) { break; } for (@InferredType(LIST_EXT) var s2 : extStringArr()) { break; } for (@InferredType(LIST_EXT) var s2 : extStringIter()) { break; } for (@InferredType(STRING) var s2 : extString()) { break; } } void testExtendsFbound() { @InferredType(LIST_EXT_COMP_UNB) var s = extFbound(); for (@InferredType(LIST_EXT_COMP_UNB) var s2 = extFbound() ; ; ) { break; } for (@InferredType(LIST_EXT_COMP_UNB) var s2 : extFboundArr()) { break; } for (@InferredType(LIST_EXT_COMP_UNB) var s2 : extFboundIter()) { break; } for (@InferredType(COMP_UNB) var s2 : extFbound()) { break; } } void testSuperFbound() { @InferredType(LIST_UNB) var s = supFbound(); for (@InferredType(LIST_UNB) var s2 = supFbound() ; ; ) { break; } for (@InferredType(LIST_UNB) var s2 : supFboundArr()) { break; } for (@InferredType(LIST_UNB) var s2 : supFboundIter()) { break; } for (@InferredType(OBJECT) var s2 : supFbound()) { break; } } void testSuper() { @InferredType(LIST_SUP) var s = supString(); for (@InferredType(LIST_SUP) var s2 = supString() ; ; ) { break; } for (@InferredType(LIST_SUP) var s2 : supStringArr()) { break; } for (@InferredType(LIST_SUP) var s2 : supStringIter()) { break; } for (@InferredType(OBJECT) var s2 : supString()) { break; } } void testUnbound() { @InferredType(LIST_UNB) var s = unbString(); for (@InferredType(LIST_UNB) var s2 = unbString() ; ; ) { break; } for (@InferredType(LIST_UNB) var s2 : unbStringArr()) { break; } for (@InferredType(LIST_UNB) var s2 : unbStringIter()) { break; } for (@InferredType(OBJECT) var s2 : unbString()) { break; } } void testAnonymousClass() { @InferredType(ANON_OBJECT) var o = new Object() { }; for (@InferredType(ANON_OBJECT) var s2 = new Object() { } ; ; ) { break; } for (@InferredType(ANON_OBJECT) var s2 : arrayOf(new Object() { })) { break; } for (@InferredType(ANON_OBJECT) var s2 : listOf(new Object() { })) { break; } } void testAnonymousInterface() { @InferredType(ANON_RUNNABLE) var r = new Runnable() { public void run() { } }; for (@InferredType(ANON_RUNNABLE) var s2 = new Runnable() { public void run() { } } ; ; ) { break; } for (@InferredType(ANON_RUNNABLE) var s2 : arrayOf(new Runnable() { public void run() { } })) { break; } for (@InferredType(ANON_RUNNABLE) var s2 : listOf(new Runnable() { public void run() { } })) { break; } } void testIntersection() { @InferredType(INT_INTEGER_DOUBLE) var c = choose(1, 1L); for (@InferredType(INT_INTEGER_DOUBLE) var s2 = choose(1, 1L) ; ;) { break; } for (@InferredType(INT_INTEGER_DOUBLE) var s2 : arrayOf(choose(1, 1L))) { break; } for (@InferredType(INT_INTEGER_DOUBLE) var s2 : listOf(choose(1, 1L))) { break; } } List<? extends String> extString() { return null; } List<? super String> supString() { return null; } List<?> unbString() { return null; } List<? extends String>[] extStringArr() { return null; } List<? super String>[] supStringArr() { return null; } List<?>[] unbStringArr() { return null; } Iterable<? extends List<? extends String>> extStringIter() { return null; } Iterable<? extends List<? super String>> supStringIter() { return null; } Iterable<? extends List<?>> unbStringIter() { return null; } <Z extends Comparable<Z>> List<? extends Z> extFbound() { return null; } <Z extends Comparable<Z>> List<? super Z> supFbound() { return null; } <Z extends Comparable<Z>> List<? extends Z>[] extFboundArr() { return null; } <Z extends Comparable<Z>> List<? super Z>[] supFboundArr() { return null; } <Z extends Comparable<Z>> Iterable<? extends List<? extends Z>> extFboundIter() { return null; } <Z extends Comparable<Z>> Iterable<? extends List<? super Z>> supFboundIter() { return null; } <Z> List<Z> listOf(Z z) { return null; } <Z> Z[] arrayOf(Z z) { return null; } <Z> Z choose(Z z1, Z z2) { return z1; } }