1 /* 2 * Copyright (c) 2006, 2019, 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. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 package javax.tools; 27 28 import java.util.ArrayList; 29 import java.util.Collections; 30 import java.util.List; 31 import java.util.Objects; 32 33 /** 34 * Provides an easy way to collect diagnostics in a list. 35 * 36 * @param <S> the type of source objects used by diagnostics received 37 * by this object 38 * 39 * @author Peter von der Ahé 40 * @since 1.6 41 */ 42 public final class DiagnosticCollector<S> implements DiagnosticListener<S> { 43 private List<Diagnostic<? extends S>> diagnostics = 44 Collections.synchronizedList(new ArrayList<Diagnostic<? extends S>>()); 45 46 /** 47 * Creates a new instance of DiagnosticCollector. 48 */ 49 public DiagnosticCollector() {} 50 51 public void report(Diagnostic<? extends S> diagnostic) { 52 Objects.requireNonNull(diagnostic); 53 diagnostics.add(diagnostic); 54 } 55 56 /** 57 * Returns a list view of diagnostics collected by this object. 58 * 59 * @return a list view of diagnostics 60 */ 61 public List<Diagnostic<? extends S>> getDiagnostics() { 62 return Collections.unmodifiableList(diagnostics); 63 } 64 }