/*
* Copyright (c) 1999, 2013, 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
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package com.sun.tools.javac.main;
import java.io.File;
import java.io.IOException;
import java.io.PrintWriter;
import java.net.URL;
import java.security.DigestInputStream;
import java.security.MessageDigest;
import java.util.Arrays;
import java.util.Collection;
import java.util.Iterator;
import java.util.LinkedHashSet;
import java.util.Set;
import javax.annotation.processing.Processor;
import javax.tools.JavaFileManager;
import javax.tools.JavaFileObject;
import com.sun.source.util.JavacTask;
import com.sun.source.util.Plugin;
import com.sun.tools.doclint.DocLint;
import com.sun.tools.javac.api.BasicJavacTask;
import com.sun.tools.javac.code.Source;
import com.sun.tools.javac.file.CacheFSInfo;
import com.sun.tools.javac.file.JavacFileManager;
import com.sun.tools.javac.jvm.Profile;
import com.sun.tools.javac.jvm.Target;
import com.sun.tools.javac.processing.AnnotationProcessingError;
import com.sun.tools.javac.processing.JavacProcessingEnvironment;
import com.sun.tools.javac.util.*;
import com.sun.tools.javac.util.Log.PrefixKind;
import com.sun.tools.javac.util.Log.WriterKind;
import com.sun.tools.javac.util.ServiceLoader;
import static com.sun.tools.javac.main.Option.*;
/** This class provides a command line interface to the javac compiler.
*
* <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>
*/
public class Main {
/** The name of the compiler, for use in diagnostics.
*/
String ownName;
/** The writer to use for diagnostic output.
*/
PrintWriter out;
/** The log to use for diagnostic output.
*/
public Log log;
/**
* If true, certain errors will cause an exception, such as command line
* arg errors, or exceptions in user provided code.
*/
boolean apiMode;
/** Result codes.
*/
public enum Result {
OK(0), // Compilation completed with no errors.
ERROR(1), // Completed but reported errors.
CMDERR(2), // Bad command-line arguments
SYSERR(3), // System error or resource exhaustion.
ABNORMAL(4); // Compiler terminated abnormally
Result(int exitCode) {
this.exitCode = exitCode;
}
public boolean isOK() {
return (exitCode == 0);
}
public final int exitCode;
}
private Option[] recognizedOptions =
Option.getJavaCompilerOptions().toArray(new Option[0]);
private OptionHelper optionHelper = new OptionHelper() {
@Override
public String get(Option option) {
return options.get(option);
}
@Override
public void put(String name, String value) {
options.put(name, value);
}
@Override
public void remove(String name) {
options.remove(name);
}
@Override
public Log getLog() {
return log;
}
@Override
public String getOwnName() {
return ownName;
}
@Override
public void error(String key, Object... args) {
Main.this.error(key, args);
}
@Override
public void addFile(File f) {
filenames.add(f);
}
@Override
public void addClassName(String s) {
classnames.append(s);
}
};
/**
* Construct a compiler instance.
*/
public Main(String name) {
this(name, new PrintWriter(System.err, true));
}
/**
* Construct a compiler instance.
*/
public Main(String name, PrintWriter out) {
this.ownName = name;
this.out = out;
}
/** A table of all options that's passed to the JavaCompiler constructor. */
private Options options = null;
/** The list of source files to process
*/
public Set<File> filenames = null; // XXX sb protected
/** List of class files names passed on the command line
*/
public ListBuffer<String> classnames = null; // XXX sb protected
/** Report a usage error.
*/
void error(String key, Object... args) {
if (apiMode) {
String msg = log.localize(PrefixKind.JAVAC, key, args);
throw new PropagatedException(new IllegalStateException(msg));
}
warning(key, args);
log.printLines(PrefixKind.JAVAC, "msg.usage", ownName);
}
/** Report a warning.
*/
void warning(String key, Object... args) {
log.printRawLines(ownName + ": " + log.localize(PrefixKind.JAVAC, key, args));
}
public Option getOption(String flag) {
for (Option option : recognizedOptions) {
if (option.matches(flag))
return option;
}
return null;
}
public void setOptions(Options options) {
if (options == null)
throw new NullPointerException();
this.options = options;
}
public void setAPIMode(boolean apiMode) {
this.apiMode = apiMode;
}
/** Process command line arguments: store all command line options
* in `options' table and return all source filenames.
* @param flags The array of command line arguments.
*/
public Collection<File> processArgs(String[] flags) { // XXX sb protected
return processArgs(flags, null);
}
public Collection<File> processArgs(String[] flags, String[] classNames) { // XXX sb protected
int ac = 0;
while (ac < flags.length) {
String flag = flags[ac];
ac++;
Option option = null;
if (flag.length() > 0) {
// quick hack to speed up file processing:
// if the option does not begin with '-', there is no need to check
// most of the compiler options.
int firstOptionToCheck = flag.charAt(0) == '-' ? 0 : recognizedOptions.length-1;
for (int j=firstOptionToCheck; j<recognizedOptions.length; j++) {
if (recognizedOptions[j].matches(flag)) {
option = recognizedOptions[j];
break;
}
}
}
if (option == null) {
error("err.invalid.flag", flag);
return null;
}
if (option.hasArg()) {
if (ac == flags.length) {
error("err.req.arg", flag);
return null;
}
String operand = flags[ac];
ac++;
if (option.process(optionHelper, flag, operand))
return null;
} else {
if (option.process(optionHelper, flag))
return null;
}
}
if (options.get(PROFILE) != null && options.get(BOOTCLASSPATH) != null) {
error("err.profile.bootclasspath.conflict");
return null;
}
if (this.classnames != null && classNames != null) {
this.classnames.addAll(Arrays.asList(classNames));
}
if (!checkDirectory(D))
return null;
if (!checkDirectory(S))
return null;
String sourceString = options.get(SOURCE);
Source source = (sourceString != null)
? Source.lookup(sourceString)
: Source.DEFAULT;
String targetString = options.get(TARGET);
Target target = (targetString != null)
? Target.lookup(targetString)
: Target.DEFAULT;
// We don't check source/target consistency for CLDC, as J2ME
// profiles are not aligned with J2SE targets; moreover, a
// single CLDC target may have many profiles. In addition,
// this is needed for the continued functioning of the JSR14
// prototype.
if (Character.isDigit(target.name.charAt(0))) {
if (target.compareTo(source.requiredTarget()) < 0) {
if (targetString != null) {
if (sourceString == null) {
warning("warn.target.default.source.conflict",
targetString,
source.requiredTarget().name);
} else {
warning("warn.source.target.conflict",
sourceString,
source.requiredTarget().name);
}
return null;
} else {
target = source.requiredTarget();
options.put("-target", target.name);
}
} else {
if (targetString == null && !source.allowGenerics()) {
target = Target.JDK1_4;
options.put("-target", target.name);
}
}
}
String profileString = options.get(PROFILE);
if (profileString != null) {
Profile profile = Profile.lookup(profileString);
if (!profile.isValid(target)) {
warning("warn.profile.target.conflict", profileString, target.name);
return null;
}
}
// handle this here so it works even if no other options given
String showClass = options.get("showClass");
if (showClass != null) {
if (showClass.equals("showClass")) // no value given for option
showClass = "com.sun.tools.javac.Main";
showClass(showClass);
}
options.notifyListeners();
return filenames;
}
// where
private boolean checkDirectory(Option option) {
String value = options.get(option);
if (value == null)
return true;
File file = new File(value);
if (!file.exists()) {
error("err.dir.not.found", value);
return false;
}
if (!file.isDirectory()) {
error("err.file.not.directory", value);
return false;
}
return true;
}
/** Programmatic interface for main function.
* @param args The command line parameters.
*/
public Result compile(String[] args) {
Context context = new Context();
JavacFileManager.preRegister(context); // can't create it until Log has been set up
Result result = compile(args, context);
if (fileManager instanceof JavacFileManager) {
// A fresh context was created above, so jfm must be a JavacFileManager
((JavacFileManager)fileManager).close();
}
return result;
}
public Result compile(String[] args, Context context) {
return compile(args, context, List.<JavaFileObject>nil(), null);
}
/** Programmatic interface for main function.
* @param args The command line parameters.
*/
public Result compile(String[] args,
Context context,
List<JavaFileObject> fileObjects,
Iterable<? extends Processor> processors)
{
return compile(args, null, context, fileObjects, processors);
}
public Result compile(String[] args,
String[] classNames,
Context context,
List<JavaFileObject> fileObjects,
Iterable<? extends Processor> processors)
{
context.put(Log.outKey, out);
log = Log.instance(context);
if (options == null)
options = Options.instance(context); // creates a new one
filenames = new LinkedHashSet<File>();
classnames = new ListBuffer<String>();
JavaCompiler comp = null;
/*
* TODO: Logic below about what is an acceptable command line
* should be updated to take annotation processing semantics
* into account.
*/
try {
if (args.length == 0
&& (classNames == null || classNames.length == 0)
&& fileObjects.isEmpty()) {
Option.HELP.process(optionHelper, "-help");
return Result.CMDERR;
}
Collection<File> files;
try {
files = processArgs(CommandLine.parse(args), classNames);
if (files == null) {
// null signals an error in options, abort
return Result.CMDERR;
} else if (files.isEmpty() && fileObjects.isEmpty() && classnames.isEmpty()) {
// it is allowed to compile nothing if just asking for help or version info
if (options.isSet(HELP)
|| options.isSet(X)
|| options.isSet(VERSION)
|| options.isSet(FULLVERSION))
return Result.OK;
if (JavaCompiler.explicitAnnotationProcessingRequested(options)) {
error("err.no.source.files.classes");
} else {
error("err.no.source.files");
}
return Result.CMDERR;
}
} catch (java.io.FileNotFoundException e) {
warning("err.file.not.found", e.getMessage());
return Result.SYSERR;
}
boolean forceStdOut = options.isSet("stdout");
if (forceStdOut) {
log.flush();
log.setWriters(new PrintWriter(System.out, true));
}
// allow System property in following line as a Mustang legacy
boolean batchMode = (options.isUnset("nonBatchMode")
&& System.getProperty("nonBatchMode") == null);
if (batchMode)
CacheFSInfo.preRegister(context);
// FIXME: this code will not be invoked if using JavacTask.parse/analyze/generate
// invoke any available plugins
String plugins = options.get(PLUGIN);
if (plugins != null) {
JavacProcessingEnvironment pEnv = JavacProcessingEnvironment.instance(context);
ClassLoader cl = pEnv.getProcessorClassLoader();
ServiceLoader<Plugin> sl = ServiceLoader.load(Plugin.class, cl);
Set<List<String>> pluginsToCall = new LinkedHashSet<List<String>>();
for (String plugin: plugins.split("\\x00")) {
pluginsToCall.add(List.from(plugin.split("\\s+")));
}
JavacTask task = null;
Iterator<Plugin> iter = sl.iterator();
while (iter.hasNext()) {
Plugin plugin = iter.next();
for (List<String> p: pluginsToCall) {
if (plugin.getName().equals(p.head)) {
pluginsToCall.remove(p);
try {
if (task == null)
task = JavacTask.instance(pEnv);
plugin.init(task, p.tail.toArray(new String[p.tail.size()]));
} catch (Throwable ex) {
if (apiMode)
throw new RuntimeException(ex);
pluginMessage(ex);
return Result.SYSERR;
}
}
}
}
for (List<String> p: pluginsToCall) {
log.printLines(PrefixKind.JAVAC, "msg.plugin.not.found", p.head);
}
}
comp = JavaCompiler.instance(context);
// FIXME: this code will not be invoked if using JavacTask.parse/analyze/generate
String xdoclint = options.get(XDOCLINT);
String xdoclintCustom = options.get(XDOCLINT_CUSTOM);
if (xdoclint != null || xdoclintCustom != null) {
Set<String> doclintOpts = new LinkedHashSet<String>();
if (xdoclint != null)
doclintOpts.add(DocLint.XMSGS_OPTION);
if (xdoclintCustom != null) {
for (String s: xdoclintCustom.split("\\s+")) {
if (s.isEmpty())
continue;
doclintOpts.add(s.replace(XDOCLINT_CUSTOM.text, DocLint.XMSGS_CUSTOM_PREFIX));
}
}
if (!(doclintOpts.size() == 1
&& doclintOpts.iterator().next().equals(DocLint.XMSGS_CUSTOM_PREFIX + "none"))) {
JavacTask t = BasicJavacTask.instance(context);
// standard doclet normally generates H1, H2
doclintOpts.add(DocLint.XIMPLICIT_HEADERS + "2");
new DocLint().init(t, doclintOpts.toArray(new String[doclintOpts.size()]));
comp.keepComments = true;
}
}
fileManager = context.get(JavaFileManager.class);
if (!files.isEmpty()) {
// add filenames to fileObjects
comp = JavaCompiler.instance(context);
List<JavaFileObject> otherFiles = List.nil();
JavacFileManager dfm = (JavacFileManager)fileManager;
for (JavaFileObject fo : dfm.getJavaFileObjectsFromFiles(files))
otherFiles = otherFiles.prepend(fo);
for (JavaFileObject fo : otherFiles)
fileObjects = fileObjects.prepend(fo);
}
comp.compile(fileObjects,
classnames.toList(),
processors);
if (log.expectDiagKeys != null) {
if (log.expectDiagKeys.isEmpty()) {
log.printRawLines("all expected diagnostics found");
return Result.OK;
} else {
log.printRawLines("expected diagnostic keys not found: " + log.expectDiagKeys);
return Result.ERROR;
}
}
if (comp.errorCount() != 0)
return Result.ERROR;
} catch (IOException ex) {
ioMessage(ex);
return Result.SYSERR;
} catch (OutOfMemoryError ex) {
resourceMessage(ex);
return Result.SYSERR;
} catch (StackOverflowError ex) {
resourceMessage(ex);
return Result.SYSERR;
} catch (FatalError ex) {
feMessage(ex);
return Result.SYSERR;
} catch (AnnotationProcessingError ex) {
if (apiMode)
throw new RuntimeException(ex.getCause());
apMessage(ex);
return Result.SYSERR;
} catch (ClientCodeException ex) {
// as specified by javax.tools.JavaCompiler#getTask
// and javax.tools.JavaCompiler.CompilationTask#call
throw new RuntimeException(ex.getCause());
} catch (PropagatedException ex) {
throw ex.getCause();
} catch (Throwable ex) {
// Nasty. If we've already reported an error, compensate
// for buggy compiler error recovery by swallowing thrown
// exceptions.
if (comp == null || comp.errorCount() == 0 ||
options == null || options.isSet("dev"))
bugMessage(ex);
return Result.ABNORMAL;
} finally {
if (comp != null) {
try {
comp.close();
} catch (ClientCodeException ex) {
throw new RuntimeException(ex.getCause());
}
}
filenames = null;
options = null;
}
return Result.OK;
}
/** Print a message reporting an internal error.
*/
void bugMessage(Throwable ex) {
log.printLines(PrefixKind.JAVAC, "msg.bug", JavaCompiler.version());
ex.printStackTrace(log.getWriter(WriterKind.NOTICE));
}
/** Print a message reporting a fatal error.
*/
void feMessage(Throwable ex) {
log.printRawLines(ex.getMessage());
if (ex.getCause() != null && options.isSet("dev")) {
ex.getCause().printStackTrace(log.getWriter(WriterKind.NOTICE));
}
}
/** Print a message reporting an input/output error.
*/
void ioMessage(Throwable ex) {
log.printLines(PrefixKind.JAVAC, "msg.io");
ex.printStackTrace(log.getWriter(WriterKind.NOTICE));
}
/** Print a message reporting an out-of-resources error.
*/
void resourceMessage(Throwable ex) {
log.printLines(PrefixKind.JAVAC, "msg.resource");
ex.printStackTrace(log.getWriter(WriterKind.NOTICE));
}
/** Print a message reporting an uncaught exception from an
* annotation processor.
*/
void apMessage(AnnotationProcessingError ex) {
log.printLines(PrefixKind.JAVAC, "msg.proc.annotation.uncaught.exception");
ex.getCause().printStackTrace(log.getWriter(WriterKind.NOTICE));
}
/** Print a message reporting an uncaught exception from an
* annotation processor.
*/
void pluginMessage(Throwable ex) {
log.printLines(PrefixKind.JAVAC, "msg.plugin.uncaught.exception");
ex.printStackTrace(log.getWriter(WriterKind.NOTICE));
}
/** Display the location and checksum of a class. */
void showClass(String className) {
PrintWriter pw = log.getWriter(WriterKind.NOTICE);
pw.println("javac: show class: " + className);
URL url = getClass().getResource('/' + className.replace('.', '/') + ".class");
if (url == null)
pw.println(" class not found");
else {
pw.println(" " + url);
try {
final String algorithm = "MD5";
byte[] digest;
MessageDigest md = MessageDigest.getInstance(algorithm);
DigestInputStream in = new DigestInputStream(url.openStream(), md);
try {
byte[] buf = new byte[8192];
int n;
do { n = in.read(buf); } while (n > 0);
digest = md.digest();
} finally {
in.close();
}
StringBuilder sb = new StringBuilder();
for (byte b: digest)
sb.append(String.format("%02x", b));
pw.println(" " + algorithm + " checksum: " + sb);
} catch (Exception e) {
pw.println(" cannot compute digest: " + e);
}
}
}
private JavaFileManager fileManager;
/* ************************************************************************
* Internationalization
*************************************************************************/
// /** Find a localized string in the resource bundle.
// * @param key The key for the localized string.
// */
// public static String getLocalizedString(String key, Object... args) { // FIXME sb private
// try {
// if (messages == null)
// messages = new JavacMessages(javacBundleName);
// return messages.getLocalizedString("javac." + key, args);
// }
// catch (MissingResourceException e) {
// throw new Error("Fatal Error: Resource for javac is missing", e);
// }
// }
//
// public static void useRawMessages(boolean enable) {
// if (enable) {
// messages = new JavacMessages(javacBundleName) {
// @Override
// public String getLocalizedString(String key, Object... args) {
// return key;
// }
// };
// } else {
// messages = new JavacMessages(javacBundleName);
// }
// }
public static final String javacBundleName =
"com.sun.tools.javac.resources.javac";
//
// private static JavacMessages messages;
}
Javac main.java
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