Tue, 25 Sep 2012 13:11:05 -0700
7196464: upgrade JavaCompiler.shouldStopPolicy to accomodate policies in face of error and no error
Reviewed-by: mcimadamore
1 /*
2 * Copyright (c) 2005, 2009, 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 */
26 package com.sun.tools.javac.file;
28 import java.io.File;
29 import java.io.IOException;
30 import java.io.InputStreamReader;
31 import java.io.Reader;
32 import java.net.URI;
33 import java.net.URISyntaxException;
34 import java.nio.charset.CharsetDecoder;
35 import javax.lang.model.element.Modifier;
36 import javax.lang.model.element.NestingKind;
37 import javax.tools.FileObject;
38 import javax.tools.JavaFileObject;
40 import static javax.tools.JavaFileObject.Kind.*;
42 import com.sun.tools.javac.util.BaseFileManager;
44 /**
45 * <p><b>This is NOT part of any supported API.
46 * If you write code that depends on this, you do so at your own risk.
47 * This code and its internal interfaces are subject to change or
48 * deletion without notice.</b>
49 */
50 public abstract class BaseFileObject implements JavaFileObject {
51 protected BaseFileObject(JavacFileManager fileManager) {
52 this.fileManager = fileManager;
53 }
55 /** Return a short name for the object, such as for use in raw diagnostics
56 */
57 public abstract String getShortName();
59 @Override
60 public String toString() {
61 return getClass().getSimpleName() + "[" + getName() + "]";
62 }
64 public NestingKind getNestingKind() { return null; }
66 public Modifier getAccessLevel() { return null; }
68 public Reader openReader(boolean ignoreEncodingErrors) throws IOException {
69 return new InputStreamReader(openInputStream(), getDecoder(ignoreEncodingErrors));
70 }
72 protected CharsetDecoder getDecoder(boolean ignoreEncodingErrors) {
73 throw new UnsupportedOperationException();
74 }
76 protected abstract String inferBinaryName(Iterable<? extends File> path);
78 protected static JavaFileObject.Kind getKind(String filename) {
79 return BaseFileManager.getKind(filename);
80 }
82 protected static String removeExtension(String fileName) {
83 int lastDot = fileName.lastIndexOf(".");
84 return (lastDot == -1 ? fileName : fileName.substring(0, lastDot));
85 }
87 protected static URI createJarUri(File jarFile, String entryName) {
88 URI jarURI = jarFile.toURI().normalize();
89 String separator = entryName.startsWith("/") ? "!" : "!/";
90 try {
91 // The jar URI convention appears to be not to re-encode the jarURI
92 return new URI("jar:" + jarURI + separator + entryName);
93 } catch (URISyntaxException e) {
94 throw new CannotCreateUriError(jarURI + separator + entryName, e);
95 }
96 }
98 /** Used when URLSyntaxException is thrown unexpectedly during
99 * implementations of (Base)FileObject.toURI(). */
100 protected static class CannotCreateUriError extends Error {
101 private static final long serialVersionUID = 9101708840997613546L;
102 public CannotCreateUriError(String value, Throwable cause) {
103 super(value, cause);
104 }
105 }
107 /** Return the last component of a presumed hierarchical URI.
108 * From the scheme specific part of the URI, it returns the substring
109 * after the last "/" if any, or everything if no "/" is found.
110 */
111 public static String getSimpleName(FileObject fo) {
112 URI uri = fo.toUri();
113 String s = uri.getSchemeSpecificPart();
114 return s.substring(s.lastIndexOf("/") + 1); // safe when / not found
116 }
118 // force subtypes to define equals
119 @Override
120 public abstract boolean equals(Object other);
122 // force subtypes to define hashCode
123 @Override
124 public abstract int hashCode();
126 /** The file manager that created this JavaFileObject. */
127 protected final JavacFileManager fileManager;
128 }