src/jdk.compiler/share/classes/com/sun/tools/javac/main/Main.java - platform/libcore - Git at Google

 /*
  * Copyright (c) 1999, 2018, 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.FileNotFoundException;
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.PrintWriter;
 import java.net.URL;
 import java.nio.file.NoSuchFileException;
 import java.security.CodeSource;
 import java.security.DigestInputStream;
 import java.security.MessageDigest;
 import java.security.NoSuchAlgorithmException;
 import java.util.Set;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;

 import javax.tools.JavaFileManager;

 import com.sun.tools.javac.api.BasicJavacTask;
 import com.sun.tools.javac.file.CacheFSInfo;
 import com.sun.tools.javac.file.BaseFileManager;
 import com.sun.tools.javac.file.JavacFileManager;
 import com.sun.tools.javac.jvm.Target;
 import com.sun.tools.javac.main.CommandLine.UnmatchedQuote;
 import com.sun.tools.javac.platform.PlatformDescription;
 import com.sun.tools.javac.processing.AnnotationProcessingError;
 import com.sun.tools.javac.resources.CompilerProperties.Errors;
 import com.sun.tools.javac.util.*;
 import com.sun.tools.javac.util.JCDiagnostic.DiagnosticInfo;
 import com.sun.tools.javac.util.Log.PrefixKind;
 import com.sun.tools.javac.util.Log.WriterKind;

 /** 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 normal output.
      */
     PrintWriter stdOut;

     /** The writer to use for diagnostic output.
      */
     PrintWriter stdErr;

     /** 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;

     private static final String ENV_OPT_NAME = "JDK_JAVAC_OPTIONS";

     /** 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;
     }

     /**
      * Construct a compiler instance.
      * @param name the name of this tool
      */
     public Main(String name) {
         this.ownName = name;
     }

     /**
      * Construct a compiler instance.
      * @param name the name of this tool
      * @param out a stream to which to write messages
      */
     public Main(String name, PrintWriter out) {
         this.ownName = name;
         this.stdOut = this.stdErr = out;
     }

     /**
      * Construct a compiler instance.
      * @param name the name of this tool
      * @param out a stream to which to write expected output
      * @param err a stream to which to write diagnostic output
      */
     public Main(String name, PrintWriter out, PrintWriter err) {
         this.ownName = name;
         this.stdOut = out;
         this.stdErr = err;
     }

     /** Report a usage error.
      */
     void reportDiag(DiagnosticInfo diag) {
         if (apiMode) {
             String msg = log.localize(diag);
             throw new PropagatedException(new IllegalStateException(msg));
         }
         reportHelper(diag);
         log.printLines(PrefixKind.JAVAC, "msg.usage", ownName);
     }

     /** Report helper.
      */
     void reportHelper(DiagnosticInfo diag) {
         String msg = log.localize(diag);
         String errorPrefix = log.localize(Errors.Error);
         msg = msg.startsWith(errorPrefix) ? msg : errorPrefix + msg;
         log.printRawLines(msg);
     }


     /**
      * Programmatic interface for main function.
      * @param args  the command line parameters
      * @return the result of the compilation
      */
     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);
         try {
             // A fresh context was created above, so the file manager can be safely closed:
             if (fileManager != null)
                 fileManager.close();
         } catch (IOException ex) {
             bugMessage(ex);
         }
         return result;
     }

     /**
      * Internal version of compile, allowing context to be provided.
      * Note that the context needs to have a file manager set up.
      * @param argv  the command line parameters
      * @param context the context
      * @return the result of the compilation
      */
     public Result compile(String[] argv, Context context) {
         if (stdOut != null) {
             context.put(Log.outKey, stdOut);
         }

         if (stdErr != null) {
             context.put(Log.errKey, stdErr);
         }

         log = Log.instance(context);

         if (argv.length == 0) {
             OptionHelper h = new OptionHelper.GrumpyHelper(log) {
                 @Override
                 public String getOwnName() { return ownName; }
                 @Override
                 public void put(String name, String value) { }
             };
             try {
                 Option.HELP.process(h, "-help");
             } catch (Option.InvalidValueException ignore) {
             }
             return Result.CMDERR;
         }

         // prefix argv with contents of environment variable and expand @-files
         try {
             argv = CommandLine.parse(ENV_OPT_NAME, argv);
         } catch (UnmatchedQuote ex) {
             reportDiag(Errors.UnmatchedQuote(ex.variableName));
             return Result.CMDERR;
         } catch (FileNotFoundException | NoSuchFileException e) {
             reportHelper(Errors.FileNotFound(e.getMessage()));
             return Result.SYSERR;
         } catch (IOException ex) {
             log.printLines(PrefixKind.JAVAC, "msg.io");
             ex.printStackTrace(log.getWriter(WriterKind.NOTICE));
             return Result.SYSERR;
         }

         Arguments args = Arguments.instance(context);
         args.init(ownName, argv);

         if (log.nerrors > 0)
             return Result.CMDERR;

         Options options = Options.instance(context);

         // init Log
         boolean forceStdOut = options.isSet("stdout");
         if (forceStdOut) {
             log.flush();
             log.setWriters(new PrintWriter(System.out, true));
         }

         // init CacheFSInfo
         // allow System property in following line as a Mustang legacy
         boolean batchMode = (options.isUnset("nonBatchMode")
                     && System.getProperty("nonBatchMode") == null);
         if (batchMode)
             CacheFSInfo.preRegister(context);

         boolean ok = true;

         // init file manager
         fileManager = context.get(JavaFileManager.class);
         JavaFileManager undel = fileManager instanceof DelegatingJavaFileManager ?
                 ((DelegatingJavaFileManager) fileManager).getBaseFileManager() : fileManager;
         if (undel instanceof BaseFileManager) {
             ((BaseFileManager) undel).setContext(context); // reinit with options
             ok &= ((BaseFileManager) undel).handleOptions(args.getDeferredFileManagerOptions());
         }

         // 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);
         }

         ok &= args.validate();
         if (!ok || log.nerrors > 0)
             return Result.CMDERR;

         if (args.isEmpty())
             return Result.OK;

         // init Dependencies
         if (options.isSet("debug.completionDeps")) {
             Dependencies.GraphDependencies.preRegister(context);
         }

         // init plugins
         Set<List<String>> pluginOpts = args.getPluginOpts();
         if (!pluginOpts.isEmpty() || context.get(PlatformDescription.class) != null) {
             BasicJavacTask t = (BasicJavacTask) BasicJavacTask.instance(context);
             t.initPlugins(pluginOpts);
         }

         // init multi-release jar handling
         if (fileManager.isSupportedOption(Option.MULTIRELEASE.primaryName) == 1) {
             Target target = Target.instance(context);
             List<String> list = List.of(target.multiReleaseValue());
             fileManager.handleOption(Option.MULTIRELEASE.primaryName, list.iterator());
         }

         // init JavaCompiler
         JavaCompiler comp = JavaCompiler.instance(context);

         // init doclint
         List<String> docLintOpts = args.getDocLintOpts();
         if (!docLintOpts.isEmpty()) {
             BasicJavacTask t = (BasicJavacTask) BasicJavacTask.instance(context);
             t.initDocLint(docLintOpts);
         }

         if (options.get(Option.XSTDOUT) != null) {
             // Stdout reassigned - ask compiler to close it when it is done
             comp.closeables = comp.closeables.prepend(log.getWriter(WriterKind.NOTICE));
         }

         try {
             comp.compile(args.getFileObjects(), args.getClassNames(), null, List.nil());

             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;
                 }
             }

             return (comp.errorCount() == 0) ? Result.OK : Result.ERROR;

         } catch (OutOfMemoryError | StackOverflowError ex) {
             resourceMessage(ex);
             return Result.SYSERR;
         } catch (FatalError ex) {
             feMessage(ex, options);
             return Result.SYSERR;
         } catch (AnnotationProcessingError ex) {
             apMessage(ex);
             return Result.SYSERR;
         } catch (PropagatedException ex) {
             // TODO: what about errors from plugins?   should not simply rethrow the error here
             throw ex.getCause();
         } catch (IllegalAccessError iae) {
             if (twoClassLoadersInUse(iae)) {
                 bugMessage(iae);
             }
             return Result.ABNORMAL;
         } 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.isSet("dev"))
                 bugMessage(ex);
             return Result.ABNORMAL;
         } finally {
             if (comp != null) {
                 try {
                     comp.close();
                 } catch (ClientCodeException ex) {
                     throw new RuntimeException(ex.getCause());
                 }
             }
         }
     }

     private boolean twoClassLoadersInUse(IllegalAccessError iae) {
         String msg = iae.getMessage();
         Pattern pattern = Pattern.compile("(?i)(?<=tried to access class )([a-z_$][a-z\\d_$]*\\.)*[a-z_$][a-z\\d_$]*");
         Matcher matcher = pattern.matcher(msg);
         if (matcher.find()) {
             try {
                 String otherClassName = matcher.group(0);
                 Class<?> otherClass = Class.forName(otherClassName);
                 ClassLoader otherClassLoader = otherClass.getClassLoader();
                 ClassLoader javacClassLoader = this.getClass().getClassLoader();
                 if (javacClassLoader != otherClassLoader) {
                     CodeSource otherClassCodeSource = otherClass.getProtectionDomain().getCodeSource();
                     CodeSource javacCodeSource = this.getClass().getProtectionDomain().getCodeSource();
                     if (otherClassCodeSource != null && javacCodeSource != null) {
                         log.printLines(Errors.TwoClassLoaders2(otherClassCodeSource.getLocation(),
                                 javacCodeSource.getLocation()));
                     } else {
                         log.printLines(Errors.TwoClassLoaders1);
                     }
                     return true;
                 }
             } catch (Throwable t) {
                 return false;
             }
         }
         return false;
     }

     /** 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, Options options) {
         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("  " + url);
         }

         try (InputStream in = getClass().getResourceAsStream('/' + className.replace('.', '/') + ".class")) {
             final String algorithm = "MD5";
             byte[] digest;
             MessageDigest md = MessageDigest.getInstance(algorithm);
             try (DigestInputStream din = new DigestInputStream(in, md)) {
                 byte[] buf = new byte[8192];
                 int n;
                 do { n = din.read(buf); } while (n > 0);
                 digest = md.digest();
             }
             StringBuilder sb = new StringBuilder();
             for (byte b: digest)
                 sb.append(String.format("%02x", b));
             pw.println("  " + algorithm + " checksum: " + sb);
         } catch (NoSuchAlgorithmException | IOException e) {
             pw.println("  cannot compute digest: " + e);
         }
     }

     // TODO: update this to JavacFileManager
     private JavaFileManager fileManager;

     /* ************************************************************************
      * Internationalization
      *************************************************************************/

     public static final String javacBundleName =
         "com.sun.tools.javac.resources.javac";
 }
	/*
	* Copyright (c) 1999, 2018, 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.FileNotFoundException;
	import java.io.IOException;
	import java.io.InputStream;
	import java.io.PrintWriter;
	import java.net.URL;
	import java.nio.file.NoSuchFileException;
	import java.security.CodeSource;
	import java.security.DigestInputStream;
	import java.security.MessageDigest;
	import java.security.NoSuchAlgorithmException;
	import java.util.Set;
	import java.util.regex.Matcher;
	import java.util.regex.Pattern;

	import javax.tools.JavaFileManager;

	import com.sun.tools.javac.api.BasicJavacTask;
	import com.sun.tools.javac.file.CacheFSInfo;
	import com.sun.tools.javac.file.BaseFileManager;
	import com.sun.tools.javac.file.JavacFileManager;
	import com.sun.tools.javac.jvm.Target;
	import com.sun.tools.javac.main.CommandLine.UnmatchedQuote;
	import com.sun.tools.javac.platform.PlatformDescription;
	import com.sun.tools.javac.processing.AnnotationProcessingError;
	import com.sun.tools.javac.resources.CompilerProperties.Errors;
	import com.sun.tools.javac.util.*;
	import com.sun.tools.javac.util.JCDiagnostic.DiagnosticInfo;
	import com.sun.tools.javac.util.Log.PrefixKind;
	import com.sun.tools.javac.util.Log.WriterKind;

	/** 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 normal output.
	*/
	PrintWriter stdOut;

	/** The writer to use for diagnostic output.
	*/
	PrintWriter stdErr;

	/** 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;

	private static final String ENV_OPT_NAME = "JDK_JAVAC_OPTIONS";

	/** 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;
	}

	/**
	* Construct a compiler instance.
	* @param name the name of this tool
	*/
	public Main(String name) {
	this.ownName = name;
	}

	/**
	* Construct a compiler instance.
	* @param name the name of this tool
	* @param out a stream to which to write messages
	*/
	public Main(String name, PrintWriter out) {
	this.ownName = name;
	this.stdOut = this.stdErr = out;
	}

	/**
	* Construct a compiler instance.
	* @param name the name of this tool
	* @param out a stream to which to write expected output
	* @param err a stream to which to write diagnostic output
	*/
	public Main(String name, PrintWriter out, PrintWriter err) {
	this.ownName = name;
	this.stdOut = out;
	this.stdErr = err;
	}

	/** Report a usage error.
	*/
	void reportDiag(DiagnosticInfo diag) {
	if (apiMode) {
	String msg = log.localize(diag);
	throw new PropagatedException(new IllegalStateException(msg));
	}
	reportHelper(diag);
	log.printLines(PrefixKind.JAVAC, "msg.usage", ownName);
	}

	/** Report helper.
	*/
	void reportHelper(DiagnosticInfo diag) {
	String msg = log.localize(diag);
	String errorPrefix = log.localize(Errors.Error);
	msg = msg.startsWith(errorPrefix) ? msg : errorPrefix + msg;
	log.printRawLines(msg);
	}


	/**
	* Programmatic interface for main function.
	* @param args the command line parameters
	* @return the result of the compilation
	*/
	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);
	try {
	// A fresh context was created above, so the file manager can be safely closed:
	if (fileManager != null)
	fileManager.close();
	} catch (IOException ex) {
	bugMessage(ex);
	}
	return result;
	}

	/**
	* Internal version of compile, allowing context to be provided.
	* Note that the context needs to have a file manager set up.
	* @param argv the command line parameters
	* @param context the context
	* @return the result of the compilation
	*/
	public Result compile(String[] argv, Context context) {
	if (stdOut != null) {
	context.put(Log.outKey, stdOut);
	}

	if (stdErr != null) {
	context.put(Log.errKey, stdErr);
	}

	log = Log.instance(context);

	if (argv.length == 0) {
	OptionHelper h = new OptionHelper.GrumpyHelper(log) {
	@Override
	public String getOwnName() { return ownName; }
	@Override
	public void put(String name, String value) { }
	};
	try {
	Option.HELP.process(h, "-help");
	} catch (Option.InvalidValueException ignore) {
	}
	return Result.CMDERR;
	}

	// prefix argv with contents of environment variable and expand @-files
	try {
	argv = CommandLine.parse(ENV_OPT_NAME, argv);
	} catch (UnmatchedQuote ex) {
	reportDiag(Errors.UnmatchedQuote(ex.variableName));
	return Result.CMDERR;
	} catch (FileNotFoundException \| NoSuchFileException e) {
	reportHelper(Errors.FileNotFound(e.getMessage()));
	return Result.SYSERR;
	} catch (IOException ex) {
	log.printLines(PrefixKind.JAVAC, "msg.io");
	ex.printStackTrace(log.getWriter(WriterKind.NOTICE));
	return Result.SYSERR;
	}

	Arguments args = Arguments.instance(context);
	args.init(ownName, argv);

	if (log.nerrors > 0)
	return Result.CMDERR;

	Options options = Options.instance(context);

	// init Log
	boolean forceStdOut = options.isSet("stdout");
	if (forceStdOut) {
	log.flush();
	log.setWriters(new PrintWriter(System.out, true));
	}

	// init CacheFSInfo
	// allow System property in following line as a Mustang legacy
	boolean batchMode = (options.isUnset("nonBatchMode")
	&& System.getProperty("nonBatchMode") == null);
	if (batchMode)
	CacheFSInfo.preRegister(context);

	boolean ok = true;

	// init file manager
	fileManager = context.get(JavaFileManager.class);
	JavaFileManager undel = fileManager instanceof DelegatingJavaFileManager ?
	((DelegatingJavaFileManager) fileManager).getBaseFileManager() : fileManager;
	if (undel instanceof BaseFileManager) {
	((BaseFileManager) undel).setContext(context); // reinit with options
	ok &= ((BaseFileManager) undel).handleOptions(args.getDeferredFileManagerOptions());
	}

	// 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);
	}

	ok &= args.validate();
	if (!ok \|\| log.nerrors > 0)
	return Result.CMDERR;

	if (args.isEmpty())
	return Result.OK;

	// init Dependencies
	if (options.isSet("debug.completionDeps")) {
	Dependencies.GraphDependencies.preRegister(context);
	}

	// init plugins
	Set<List<String>> pluginOpts = args.getPluginOpts();
	if (!pluginOpts.isEmpty() \|\| context.get(PlatformDescription.class) != null) {
	BasicJavacTask t = (BasicJavacTask) BasicJavacTask.instance(context);
	t.initPlugins(pluginOpts);
	}

	// init multi-release jar handling
	if (fileManager.isSupportedOption(Option.MULTIRELEASE.primaryName) == 1) {
	Target target = Target.instance(context);
	List<String> list = List.of(target.multiReleaseValue());
	fileManager.handleOption(Option.MULTIRELEASE.primaryName, list.iterator());
	}

	// init JavaCompiler
	JavaCompiler comp = JavaCompiler.instance(context);

	// init doclint
	List<String> docLintOpts = args.getDocLintOpts();
	if (!docLintOpts.isEmpty()) {
	BasicJavacTask t = (BasicJavacTask) BasicJavacTask.instance(context);
	t.initDocLint(docLintOpts);
	}

	if (options.get(Option.XSTDOUT) != null) {
	// Stdout reassigned - ask compiler to close it when it is done
	comp.closeables = comp.closeables.prepend(log.getWriter(WriterKind.NOTICE));
	}

	try {
	comp.compile(args.getFileObjects(), args.getClassNames(), null, List.nil());

	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;
	}
	}

	return (comp.errorCount() == 0) ? Result.OK : Result.ERROR;

	} catch (OutOfMemoryError \| StackOverflowError ex) {
	resourceMessage(ex);
	return Result.SYSERR;
	} catch (FatalError ex) {
	feMessage(ex, options);
	return Result.SYSERR;
	} catch (AnnotationProcessingError ex) {
	apMessage(ex);
	return Result.SYSERR;
	} catch (PropagatedException ex) {
	// TODO: what about errors from plugins? should not simply rethrow the error here
	throw ex.getCause();
	} catch (IllegalAccessError iae) {
	if (twoClassLoadersInUse(iae)) {
	bugMessage(iae);
	}
	return Result.ABNORMAL;
	} 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.isSet("dev"))
	bugMessage(ex);
	return Result.ABNORMAL;
	} finally {
	if (comp != null) {
	try {
	comp.close();
	} catch (ClientCodeException ex) {
	throw new RuntimeException(ex.getCause());
	}
	}
	}
	}

	private boolean twoClassLoadersInUse(IllegalAccessError iae) {
	String msg = iae.getMessage();
	Pattern pattern = Pattern.compile("(?i)(?<=tried to access class )([a-z_$][a-z\\d_$]\\.)[a-z_$][a-z\\d_$]*");
	Matcher matcher = pattern.matcher(msg);
	if (matcher.find()) {
	try {
	String otherClassName = matcher.group(0);
	Class<?> otherClass = Class.forName(otherClassName);
	ClassLoader otherClassLoader = otherClass.getClassLoader();
	ClassLoader javacClassLoader = this.getClass().getClassLoader();
	if (javacClassLoader != otherClassLoader) {
	CodeSource otherClassCodeSource = otherClass.getProtectionDomain().getCodeSource();
	CodeSource javacCodeSource = this.getClass().getProtectionDomain().getCodeSource();
	if (otherClassCodeSource != null && javacCodeSource != null) {
	log.printLines(Errors.TwoClassLoaders2(otherClassCodeSource.getLocation(),
	javacCodeSource.getLocation()));
	} else {
	log.printLines(Errors.TwoClassLoaders1);
	}
	return true;
	}
	} catch (Throwable t) {
	return false;
	}
	}
	return false;
	}

	/** 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, Options options) {
	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(" " + url);
	}

	try (InputStream in = getClass().getResourceAsStream('/' + className.replace('.', '/') + ".class")) {
	final String algorithm = "MD5";
	byte[] digest;
	MessageDigest md = MessageDigest.getInstance(algorithm);
	try (DigestInputStream din = new DigestInputStream(in, md)) {
	byte[] buf = new byte[8192];
	int n;
	do { n = din.read(buf); } while (n > 0);
	digest = md.digest();
	}
	StringBuilder sb = new StringBuilder();
	for (byte b: digest)
	sb.append(String.format("%02x", b));
	pw.println(" " + algorithm + " checksum: " + sb);
	} catch (NoSuchAlgorithmException \| IOException e) {
	pw.println(" cannot compute digest: " + e);
	}
	}

	// TODO: update this to JavacFileManager
	private JavaFileManager fileManager;

	/* ************************************************************************
	* Internationalization
	*************************************************************************/

	public static final String javacBundleName =
	"com.sun.tools.javac.resources.javac";
	}