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* Copyright (c) 1997, 2019, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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package jdk.javadoc.internal.tool;
import java.io.PrintWriter;
import java.util.Locale;
import java.util.ResourceBundle;
import javax.lang.model.element.Element;
import javax.tools.Diagnostic.Kind;
import com.sun.tools.javac.util.Context.Factory;
import jdk.javadoc.doclet.Reporter;
import com.sun.source.tree.CompilationUnitTree;
import com.sun.source.util.DocSourcePositions;
import com.sun.source.util.DocTreePath;
import com.sun.source.util.TreePath;
import com.sun.tools.javac.api.JavacTrees;
import com.sun.tools.javac.tree.JCTree;
import com.sun.tools.javac.util.Context;
import com.sun.tools.javac.util.JCDiagnostic;
import com.sun.tools.javac.util.JCDiagnostic.DiagnosticType;
import com.sun.tools.javac.util.JavacMessages;
import com.sun.tools.javac.util.Log;
/**
* Utility for integrating with javadoc tools and for localization.
* Handle resources, access to error and warning counts and
* message formatting.
*
* <p><b>This is NOT part of any supported API.
* If you write code that depends on this, you do so at your own risk.
* This code and its internal interfaces are subject to change or
* deletion without notice.</b>
*
* @see java.util.ResourceBundle
* @see java.text.MessageFormat
*/
public class Messager extends Log implements Reporter {
final Context context;
/** Get the current messager, which is also the compiler log. */
public static Messager instance0(Context context) {
Log instance = context.get(logKey);
if (instance == null || !(instance instanceof Messager))
throw new InternalError("no messager instance!");
return (Messager)instance;
}
public static void preRegister(Context context,
final String programName) {
context.put(logKey, (Factory<Log>)c -> new Messager(c, programName));
}
public static void preRegister(Context context, final String programName,
final PrintWriter outWriter, final PrintWriter errWriter) {
context.put(logKey, (Factory<Log>)c -> new Messager(c, programName, outWriter, errWriter));
}
@Override
public void print(Kind kind, String msg) {
switch (kind) {
case ERROR:
printError(msg);
return;
case WARNING:
case MANDATORY_WARNING:
printWarning(msg);
return;
default:
printNotice(msg);
return;
}
}
@Override
public void print(Kind kind, DocTreePath path, String msg) {
switch (kind) {
case ERROR:
printError(path, msg);
return;
case WARNING:
case MANDATORY_WARNING:
printWarning(path, msg);
return;
default:
printWarning(path, msg);
return;
}
}
@Override
public void print(Kind kind, Element e, String msg) {
switch (kind) {
case ERROR:
printError(e, msg);
return;
case WARNING:
case MANDATORY_WARNING:
printWarning(e, msg);
return;
case NOTE:
printNotice(e, msg);
return;
default:
throw new IllegalArgumentException(String.format("unexpected option %s", kind));
}
}
final String programName;
private Locale locale;
private final JavacMessages messages;
private final JCDiagnostic.Factory javadocDiags;
/** The default writer for diagnostics
*/
static final PrintWriter defaultOutWriter = new PrintWriter(System.out);
static final PrintWriter defaultErrWriter = new PrintWriter(System.err);
/**
* Constructor
* @param programName Name of the program (for error messages).
*/
public Messager(Context context, String programName) {
this(context, programName, defaultOutWriter, defaultErrWriter);
}
/**
* Constructor
* @param programName Name of the program (for error messages).
* @param outWriter Stream for notices etc.
* @param errWriter Stream for errors and warnings
*/
@SuppressWarnings("deprecation")
public Messager(Context context, String programName, PrintWriter outWriter, PrintWriter errWriter) {
super(context, errWriter, errWriter, outWriter);
messages = JavacMessages.instance(context);
messages.add(locale -> ResourceBundle.getBundle("jdk.javadoc.internal.tool.resources.javadoc",
locale));
javadocDiags = new JCDiagnostic.Factory(messages, "javadoc");
this.programName = programName;
this.context = context;
locale = Locale.getDefault();
}
public void setLocale(Locale locale) {
this.locale = locale;
}
/**
* get and format message string from resource
*
* @param key selects message from resource
* @param args arguments for the message
*/
String getText(String key, Object... args) {
return messages.getLocalizedString(locale, key, args);
}
private String getDiagSource(DocTreePath path) {
if (path == null || path.getTreePath() == null) {
return programName;
}
JavacTrees trees = JavacTrees.instance(context);
DocSourcePositions sourcePositions = trees.getSourcePositions();
CompilationUnitTree cu = path.getTreePath().getCompilationUnit();
long spos = sourcePositions.getStartPosition(cu, path.getDocComment(), path.getLeaf());
long lineNumber = cu.getLineMap().getLineNumber(spos);
String fname = cu.getSourceFile().getName();
String posString = fname + ":" + lineNumber;
return posString;
}
private String getDiagSource(Element e) {
if (e == null) {
return programName;
}
JavacTrees trees = JavacTrees.instance(context);
TreePath path = trees.getPath(e);
if (path == null) {
return programName;
}
DocSourcePositions sourcePositions = trees.getSourcePositions();
JCTree tree = trees.getTree(e);
CompilationUnitTree cu = path.getCompilationUnit();
long spos = sourcePositions.getStartPosition(cu, tree);
long lineNumber = cu.getLineMap().getLineNumber(spos);
String fname = cu.getSourceFile().getName();
String posString = fname + ":" + lineNumber;
return posString;
}
/**
* Print error message, increment error count.
* Part of DocErrorReporter.
*
* @param msg message to print
*/
public void printError(String msg) {
printError((DocTreePath)null, msg);
}
public void printError(DocTreePath path, String msg) {
String prefix = getDiagSource(path);
if (diagListener != null) {
report(DiagnosticType.ERROR, prefix, msg);
return;
}
printError(prefix, msg);
}
public void printError(Element e, String msg) {
String prefix = getDiagSource(e);
if (diagListener != null) {
report(DiagnosticType.ERROR, prefix, msg);
return;
}
printError(prefix, msg);
}
public void printErrorUsingKey(String key, Object... args) {
printError((Element)null, getText(key, args));
}
// print the error and increment count
private void printError(String prefix, String msg) {
if (nerrors < MaxErrors) {
PrintWriter errWriter = getWriter(WriterKind.ERROR);
printRawLines(errWriter, prefix + ": " + getText("javadoc.error") + " - " + msg);
errWriter.flush();
prompt();
nerrors++;
}
}
/**
* Print warning message, increment warning count.
* Part of DocErrorReporter.
*
* @param msg message to print
*/
public void printWarning(String msg) {
printWarning((DocTreePath)null, msg);
}
public void printWarningUsingKey(String key, Object... args) {
printWarning((Element)null, getText(key, args));
}
public void printWarning(Element e, String key, Object... args) {
printWarning(getText(key, args));
}
public void printWarning(DocTreePath path, String msg) {
String prefix = getDiagSource(path);
if (diagListener != null) {
report(DiagnosticType.WARNING, prefix, msg);
return;
}
printWarning(prefix, msg);
}
public void printWarning(Element e, String msg) {
String prefix = getDiagSource(e);
if (diagListener != null) {
report(DiagnosticType.WARNING, prefix, msg);
return;
}
printWarning(prefix, msg);
}
// print the warning and increment count
private void printWarning(String prefix, String msg) {
if (nwarnings < MaxWarnings) {
PrintWriter warnWriter = getWriter(WriterKind.WARNING);
printRawLines(warnWriter, prefix + ": " + getText("javadoc.warning") + " - " + msg);
warnWriter.flush();
nwarnings++;
}
}
/**
* Print a message.
* Part of DocErrorReporter.
*
* @param msg message to print
*/
public void printNotice(String msg) {
printNotice((DocTreePath)null, msg);
}
public void printNotice(DocTreePath path, String msg) {
String prefix = getDiagSource(path);
if (diagListener != null) {
report(DiagnosticType.NOTE, null, prefix + ": " + msg);
return;
}
PrintWriter noticeWriter = getWriter(WriterKind.NOTICE);
if (path == null) {
printRawLines(noticeWriter, msg);
} else {
printRawLines(noticeWriter, prefix + ": " + msg);
}
noticeWriter.flush();
}
public void printNotice(Element e, String msg) {
String pos = getDiagSource(e);
if (diagListener != null) {
report(DiagnosticType.NOTE, pos, msg);
return;
}
PrintWriter noticeWriter = getWriter(WriterKind.NOTICE);
if (e == null) {
printRawLines(noticeWriter, msg);
} else {
printRawLines(noticeWriter, pos + ": " + msg);
}
noticeWriter.flush();
}
/**
* Print a message.
*
* @param key selects message from resource
*/
public void notice(String key, Object... args) {
/**代码未完, 请加载全部代码(NowJava.com).**/