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src/share/classes/com/sun/tools/javac/file/BaseFileObject.java@2eb010b6cb22 (annotated)

src/share/classes/com/sun/tools/javac/file/BaseFileObject.java

Thu, 31 Aug 2017 15:17:03 +0800

author

aoqi

date

Thu, 31 Aug 2017 15:17:03 +0800

changeset 2525

2eb010b6cb22

parent 581

f2fdd52e4e87

parent 0

959103a6100f

permissions

-rw-r--r--

merge

aoqi@0	1	/*
aoqi@0	2	* Copyright (c) 2005, 2009, 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.javac.file;
aoqi@0	27
aoqi@0	28	import java.io.File;
aoqi@0	29	import java.io.IOException;
aoqi@0	30	import java.io.InputStreamReader;
aoqi@0	31	import java.io.Reader;
aoqi@0	32	import java.net.URI;
aoqi@0	33	import java.net.URISyntaxException;
aoqi@0	34	import java.nio.charset.CharsetDecoder;
aoqi@0	35	import javax.lang.model.element.Modifier;
aoqi@0	36	import javax.lang.model.element.NestingKind;
aoqi@0	37	import javax.tools.FileObject;
aoqi@0	38	import javax.tools.JavaFileObject;
aoqi@0	39
aoqi@0	40	import static javax.tools.JavaFileObject.Kind.*;
aoqi@0	41
aoqi@0	42	import com.sun.tools.javac.util.BaseFileManager;
aoqi@0	43
aoqi@0	44	/**
aoqi@0	45	* <p><b>This is NOT part of any supported API.
aoqi@0	46	* If you write code that depends on this, you do so at your own risk.
aoqi@0	47	* This code and its internal interfaces are subject to change or
aoqi@0	48	* deletion without notice.</b>
aoqi@0	49	*/
aoqi@0	50	public abstract class BaseFileObject implements JavaFileObject {
aoqi@0	51	protected BaseFileObject(JavacFileManager fileManager) {
aoqi@0	52	this.fileManager = fileManager;
aoqi@0	53	}
aoqi@0	54
aoqi@0	55	/** Return a short name for the object, such as for use in raw diagnostics
aoqi@0	56	*/
aoqi@0	57	public abstract String getShortName();
aoqi@0	58
aoqi@0	59	@Override
aoqi@0	60	public String toString() {
aoqi@0	61	return getClass().getSimpleName() + "[" + getName() + "]";
aoqi@0	62	}
aoqi@0	63
aoqi@0	64	public NestingKind getNestingKind() { return null; }
aoqi@0	65
aoqi@0	66	public Modifier getAccessLevel() { return null; }
aoqi@0	67
aoqi@0	68	public Reader openReader(boolean ignoreEncodingErrors) throws IOException {
aoqi@0	69	return new InputStreamReader(openInputStream(), getDecoder(ignoreEncodingErrors));
aoqi@0	70	}
aoqi@0	71
aoqi@0	72	protected CharsetDecoder getDecoder(boolean ignoreEncodingErrors) {
aoqi@0	73	throw new UnsupportedOperationException();
aoqi@0	74	}
aoqi@0	75
aoqi@0	76	protected abstract String inferBinaryName(Iterable<? extends File> path);
aoqi@0	77
aoqi@0	78	protected static JavaFileObject.Kind getKind(String filename) {
aoqi@0	79	return BaseFileManager.getKind(filename);
aoqi@0	80	}
aoqi@0	81
aoqi@0	82	protected static String removeExtension(String fileName) {
aoqi@0	83	int lastDot = fileName.lastIndexOf(".");
aoqi@0	84	return (lastDot == -1 ? fileName : fileName.substring(0, lastDot));
aoqi@0	85	}
aoqi@0	86
aoqi@0	87	protected static URI createJarUri(File jarFile, String entryName) {
aoqi@0	88	URI jarURI = jarFile.toURI().normalize();
aoqi@0	89	String separator = entryName.startsWith("/") ? "!" : "!/";
aoqi@0	90	try {
aoqi@0	91	// The jar URI convention appears to be not to re-encode the jarURI
aoqi@0	92	return new URI("jar:" + jarURI + separator + entryName);
aoqi@0	93	} catch (URISyntaxException e) {
aoqi@0	94	throw new CannotCreateUriError(jarURI + separator + entryName, e);
aoqi@0	95	}
aoqi@0	96	}
aoqi@0	97
aoqi@0	98	/** Used when URLSyntaxException is thrown unexpectedly during
aoqi@0	99	* implementations of (Base)FileObject.toURI(). */
aoqi@0	100	protected static class CannotCreateUriError extends Error {
aoqi@0	101	private static final long serialVersionUID = 9101708840997613546L;
aoqi@0	102	public CannotCreateUriError(String value, Throwable cause) {
aoqi@0	103	super(value, cause);
aoqi@0	104	}
aoqi@0	105	}
aoqi@0	106
aoqi@0	107	/** Return the last component of a presumed hierarchical URI.
aoqi@0	108	* From the scheme specific part of the URI, it returns the substring
aoqi@0	109	* after the last "/" if any, or everything if no "/" is found.
aoqi@0	110	*/
aoqi@0	111	public static String getSimpleName(FileObject fo) {
aoqi@0	112	URI uri = fo.toUri();
aoqi@0	113	String s = uri.getSchemeSpecificPart();
aoqi@0	114	return s.substring(s.lastIndexOf("/") + 1); // safe when / not found
aoqi@0	115
aoqi@0	116	}
aoqi@0	117
aoqi@0	118	// force subtypes to define equals
aoqi@0	119	@Override
aoqi@0	120	public abstract boolean equals(Object other);
aoqi@0	121
aoqi@0	122	// force subtypes to define hashCode
aoqi@0	123	@Override
aoqi@0	124	public abstract int hashCode();
aoqi@0	125
aoqi@0	126	/** The file manager that created this JavaFileObject. */
aoqi@0	127	protected final JavacFileManager fileManager;
aoqi@0	128	}