Mercurial > jdk8-mips64-public > langtools / annotate
src/share/classes/com/sun/tools/sjavac/comp/SmartFileObject.java@959103a6100f (annotated)
src/share/classes/com/sun/tools/sjavac/comp/SmartFileObject.java
Wed, 27 Apr 2016 01:34:52 +0800
- author
- aoqi
- date
- Wed, 27 Apr 2016 01:34:52 +0800
- changeset 0
- 959103a6100f
- child 2525
- 2eb010b6cb22
- permissions
- -rw-r--r--
Initial load
http://hg.openjdk.java.net/jdk8u/jdk8u/langtools/
changeset: 2573:53ca196be1ae
tag: jdk8u25-b17
| aoqi@0 | 1 | /* |
| aoqi@0 | 2 | * Copyright (c) 2012, 2013, 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 | |
| aoqi@0 | 26 | package com.sun.tools.sjavac.comp; |
| aoqi@0 | 27 | |
| aoqi@0 | 28 | import java.io.*; |
| aoqi@0 | 29 | import java.net.URI; |
| aoqi@0 | 30 | import javax.lang.model.element.Modifier; |
| aoqi@0 | 31 | import javax.lang.model.element.NestingKind; |
| aoqi@0 | 32 | import javax.tools.JavaFileObject; |
| aoqi@0 | 33 | |
| aoqi@0 | 34 | /** |
| aoqi@0 | 35 | * The SmartFileObject will return an outputstream that cache the written data |
| aoqi@0 | 36 | * and compare the new content with the old content on disk. Only if they differ, |
| aoqi@0 | 37 | * will the file be updated. |
| aoqi@0 | 38 | * |
| aoqi@0 | 39 | * <p><b>This is NOT part of any supported API. |
| aoqi@0 | 40 | * If you write code that depends on this, you do so at your own |
| aoqi@0 | 41 | * risk. This code and its internal interfaces are subject to change |
| aoqi@0 | 42 | * or deletion without notice.</b></p> |
| aoqi@0 | 43 | */ |
| aoqi@0 | 44 | public class SmartFileObject implements JavaFileObject { |
| aoqi@0 | 45 | |
| aoqi@0 | 46 | JavaFileObject file; |
| aoqi@0 | 47 | PrintWriter stdout; |
| aoqi@0 | 48 | |
| aoqi@0 | 49 | public SmartFileObject(JavaFileObject r, PrintWriter pw) { |
| aoqi@0 | 50 | file = r; |
| aoqi@0 | 51 | stdout = pw; |
| aoqi@0 | 52 | } |
| aoqi@0 | 53 | |
| aoqi@0 | 54 | @Override |
| aoqi@0 | 55 | public boolean equals(Object other) { |
| aoqi@0 | 56 | return file.equals(other); |
| aoqi@0 | 57 | } |
| aoqi@0 | 58 | |
| aoqi@0 | 59 | @Override |
| aoqi@0 | 60 | public int hashCode() { |
| aoqi@0 | 61 | return file.hashCode(); |
| aoqi@0 | 62 | } |
| aoqi@0 | 63 | |
| aoqi@0 | 64 | public Kind getKind() { |
| aoqi@0 | 65 | return file.getKind(); |
| aoqi@0 | 66 | } |
| aoqi@0 | 67 | |
| aoqi@0 | 68 | public boolean isNameCompatible(String simpleName, Kind kind) { |
| aoqi@0 | 69 | return file.isNameCompatible(simpleName, kind); |
| aoqi@0 | 70 | } |
| aoqi@0 | 71 | |
| aoqi@0 | 72 | public URI toUri() { |
| aoqi@0 | 73 | return file.toUri(); |
| aoqi@0 | 74 | } |
| aoqi@0 | 75 | |
| aoqi@0 | 76 | public String getName() { |
| aoqi@0 | 77 | return file.getName(); |
| aoqi@0 | 78 | } |
| aoqi@0 | 79 | |
| aoqi@0 | 80 | public InputStream openInputStream() throws IOException { |
| aoqi@0 | 81 | return file.openInputStream(); |
| aoqi@0 | 82 | } |
| aoqi@0 | 83 | |
| aoqi@0 | 84 | public OutputStream openOutputStream() throws IOException { |
| aoqi@0 | 85 | return file.openOutputStream(); |
| aoqi@0 | 86 | } |
| aoqi@0 | 87 | |
| aoqi@0 | 88 | public CharSequence getCharContent(boolean ignoreEncodingErrors) throws IOException { |
| aoqi@0 | 89 | return file.getCharContent(ignoreEncodingErrors); |
| aoqi@0 | 90 | } |
| aoqi@0 | 91 | |
| aoqi@0 | 92 | static String lineseparator = System.getProperty("line.separator"); |
| aoqi@0 | 93 | |
| aoqi@0 | 94 | public Writer openWriter() throws IOException { |
| aoqi@0 | 95 | StringBuilder s = new StringBuilder(); |
| aoqi@0 | 96 | try (BufferedReader r = new BufferedReader(file.openReader(true))) { |
| aoqi@0 | 97 | while (r.ready()) { |
| aoqi@0 | 98 | s.append(r.readLine()+lineseparator); |
| aoqi@0 | 99 | } |
| aoqi@0 | 100 | } catch (FileNotFoundException e) { |
| aoqi@0 | 101 | // Perfectly ok. |
| aoqi@0 | 102 | } |
| aoqi@0 | 103 | return new SmartWriter(file, s.toString(), file.getName(), stdout); |
| aoqi@0 | 104 | } |
| aoqi@0 | 105 | |
| aoqi@0 | 106 | public long getLastModified() { |
| aoqi@0 | 107 | return file.getLastModified(); |
| aoqi@0 | 108 | } |
| aoqi@0 | 109 | |
| aoqi@0 | 110 | public boolean delete() { |
| aoqi@0 | 111 | return file.delete(); |
| aoqi@0 | 112 | } |
| aoqi@0 | 113 | |
| aoqi@0 | 114 | public Modifier getAccessLevel() { |
| aoqi@0 | 115 | return file.getAccessLevel(); |
| aoqi@0 | 116 | } |
| aoqi@0 | 117 | |
| aoqi@0 | 118 | public NestingKind getNestingKind() { |
| aoqi@0 | 119 | return file.getNestingKind(); |
| aoqi@0 | 120 | } |
| aoqi@0 | 121 | |
| aoqi@0 | 122 | public Reader openReader(boolean ignoreEncodingErrors) throws IOException { |
| aoqi@0 | 123 | return file.openReader(ignoreEncodingErrors); |
| aoqi@0 | 124 | } |
| aoqi@0 | 125 | |
| aoqi@0 | 126 | } |
