Thu, 18 Apr 2013 20:00:14 -0700
8012656: cache frequently used name strings for DocImpl classes
Reviewed-by: darcy
aoqi@0 | 1 | /* |
aoqi@0 | 2 | * Copyright (c) 2012, 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. Oracle designates this |
aoqi@0 | 8 | * particular file as subject to the "Classpath" exception as provided |
aoqi@0 | 9 | * by Oracle in the LICENSE file that accompanied this code. |
aoqi@0 | 10 | * |
aoqi@0 | 11 | * This code is distributed in the hope that it will be useful, but WITHOUT |
aoqi@0 | 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
aoqi@0 | 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
aoqi@0 | 14 | * version 2 for more details (a copy is included in the LICENSE file that |
aoqi@0 | 15 | * accompanied this code). |
aoqi@0 | 16 | * |
aoqi@0 | 17 | * You should have received a copy of the GNU General Public License version |
aoqi@0 | 18 | * 2 along with this work; if not, write to the Free Software Foundation, |
aoqi@0 | 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
aoqi@0 | 20 | * |
aoqi@0 | 21 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
aoqi@0 | 22 | * or visit www.oracle.com if you need additional information or have any |
aoqi@0 | 23 | * questions. |
aoqi@0 | 24 | */ |
aoqi@0 | 25 | package com.sun.tools.javadoc.api; |
aoqi@0 | 26 | |
aoqi@0 | 27 | import com.sun.tools.javac.util.ClientCodeException; |
aoqi@0 | 28 | import java.util.Locale; |
aoqi@0 | 29 | import java.util.concurrent.atomic.AtomicBoolean; |
aoqi@0 | 30 | |
aoqi@0 | 31 | import javax.tools.DocumentationTool.DocumentationTask; |
aoqi@0 | 32 | import javax.tools.JavaFileObject; |
aoqi@0 | 33 | |
aoqi@0 | 34 | import com.sun.tools.javac.util.Context; |
aoqi@0 | 35 | import com.sun.tools.javadoc.Start; |
aoqi@0 | 36 | import java.util.Collections; |
aoqi@0 | 37 | |
aoqi@0 | 38 | /** |
aoqi@0 | 39 | * Provides access to functionality specific to the JDK documentation tool, |
aoqi@0 | 40 | * javadoc. |
aoqi@0 | 41 | * |
aoqi@0 | 42 | * <p><b>This is NOT part of any supported API. |
aoqi@0 | 43 | * If you write code that depends on this, you do so at your own |
aoqi@0 | 44 | * risk. This code and its internal interfaces are subject to change |
aoqi@0 | 45 | * or deletion without notice.</b></p> |
aoqi@0 | 46 | */ |
aoqi@0 | 47 | public class JavadocTaskImpl implements DocumentationTask { |
aoqi@0 | 48 | private final AtomicBoolean used = new AtomicBoolean(); |
aoqi@0 | 49 | |
aoqi@0 | 50 | private final Context context; |
aoqi@0 | 51 | private Class<?> docletClass; |
aoqi@0 | 52 | private Iterable<String> options; |
aoqi@0 | 53 | private Iterable<? extends JavaFileObject> fileObjects; |
aoqi@0 | 54 | private Locale locale; |
aoqi@0 | 55 | |
aoqi@0 | 56 | public JavadocTaskImpl(Context context, Class<?> docletClass, |
aoqi@0 | 57 | Iterable<String> options, Iterable<? extends JavaFileObject> fileObjects) { |
aoqi@0 | 58 | this.context = context; |
aoqi@0 | 59 | this.docletClass = docletClass; |
aoqi@0 | 60 | |
aoqi@0 | 61 | this.options = (options == null) ? Collections.<String>emptySet() |
aoqi@0 | 62 | : nullCheck(options); |
aoqi@0 | 63 | this.fileObjects = (fileObjects == null) ? Collections.<JavaFileObject>emptySet() |
aoqi@0 | 64 | : nullCheck(fileObjects); |
aoqi@0 | 65 | setLocale(Locale.getDefault()); |
aoqi@0 | 66 | } |
aoqi@0 | 67 | |
aoqi@0 | 68 | public void setLocale(Locale locale) { |
aoqi@0 | 69 | if (used.get()) |
aoqi@0 | 70 | throw new IllegalStateException(); |
aoqi@0 | 71 | this.locale = locale; |
aoqi@0 | 72 | } |
aoqi@0 | 73 | |
aoqi@0 | 74 | public Boolean call() { |
aoqi@0 | 75 | if (!used.getAndSet(true)) { |
aoqi@0 | 76 | initContext(); |
aoqi@0 | 77 | Start jdoc = new Start(context); |
aoqi@0 | 78 | try { |
aoqi@0 | 79 | return jdoc.begin(docletClass, options, fileObjects); |
aoqi@0 | 80 | } catch (ClientCodeException e) { |
aoqi@0 | 81 | throw new RuntimeException(e.getCause()); |
aoqi@0 | 82 | } |
aoqi@0 | 83 | } else { |
aoqi@0 | 84 | throw new IllegalStateException("multiple calls to method 'call'"); |
aoqi@0 | 85 | } |
aoqi@0 | 86 | } |
aoqi@0 | 87 | |
aoqi@0 | 88 | private void initContext() { |
aoqi@0 | 89 | //initialize compiler's default locale |
aoqi@0 | 90 | context.put(Locale.class, locale); |
aoqi@0 | 91 | } |
aoqi@0 | 92 | |
aoqi@0 | 93 | private static <T> Iterable<T> nullCheck(Iterable<T> items) { |
aoqi@0 | 94 | for (T item: items) { |
aoqi@0 | 95 | if (item == null) |
aoqi@0 | 96 | throw new NullPointerException(); |
aoqi@0 | 97 | } |
aoqi@0 | 98 | return items; |
aoqi@0 | 99 | } |
aoqi@0 | 100 | } |