org.eclipse.jdt.core/batch/org/eclipse/jdt/internal/compiler/batch/ClasspathDirectory.java - objectteams/org.eclipse.objectteams - Git at Google

 /*******************************************************************************
  * Copyright (c) 2000, 2018 IBM Corporation and others.
  *
  * This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License 2.0
  * which accompanies this distribution, and is available at
  * https://www.eclipse.org/legal/epl-2.0/
  *
  * SPDX-License-Identifier: EPL-2.0
  *
  * Contributors:
  *     IBM Corporation - initial API and implementation
  *     Stephan Herrmann - Contribution for
  *								Bug 440687 - [compiler][batch][null] improve command line option for external annotations
  *     Lars Vogel <Lars.Vogel@vogella.com> - Contributions for
  *     						Bug 473178
  *******************************************************************************/
 package org.eclipse.jdt.internal.compiler.batch;

 import org.eclipse.jdt.core.compiler.CharOperation;
 import org.eclipse.jdt.internal.compiler.CompilationResult;
 import org.eclipse.jdt.internal.compiler.DefaultErrorHandlingPolicies;
 import org.eclipse.jdt.internal.compiler.ast.CompilationUnitDeclaration;
 import org.eclipse.jdt.internal.compiler.ast.TypeDeclaration;
 import org.eclipse.jdt.internal.compiler.classfmt.ClassFileReader;
 import org.eclipse.jdt.internal.compiler.classfmt.ClassFormatException;
 import org.eclipse.jdt.internal.compiler.classfmt.ExternalAnnotationProvider;
 import org.eclipse.jdt.internal.compiler.env.AccessRuleSet;
 import org.eclipse.jdt.internal.compiler.env.IModule;
 import org.eclipse.jdt.internal.compiler.env.NameEnvironmentAnswer;
 import org.eclipse.jdt.internal.compiler.impl.CompilerOptions;
 import org.eclipse.jdt.internal.compiler.lookup.TypeConstants;
 import org.eclipse.jdt.internal.compiler.parser.Parser;
 import org.eclipse.jdt.internal.compiler.parser.ScannerHelper;
 import org.eclipse.jdt.internal.compiler.problem.DefaultProblemFactory;
 import org.eclipse.jdt.internal.compiler.problem.ProblemReporter;
 import org.eclipse.jdt.internal.compiler.util.Util;
 import org.eclipse.objectteams.otdt.internal.core.compiler.control.Config;

 import java.io.File;
 import java.io.FilenameFilter;
 import java.io.IOException;
 import java.nio.file.FileSystems;
 import java.nio.file.FileVisitResult;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.nio.file.SimpleFileVisitor;
 import java.nio.file.attribute.BasicFileAttributes;
 import java.util.HashSet;
 import java.util.Hashtable;
 import java.util.List;
 import java.util.Map;
 import java.util.Set;
 import java.util.function.Function;
 import java.util.stream.Stream;

 /**
  * OTDT changes:
  * What: allow batch compiler to force mode == SOURCE
  * Why:  getTeamOfRoleFile may require a source team.
  */
 @SuppressWarnings({"rawtypes", "unchecked"})
 public class ClasspathDirectory extends ClasspathLocation {

 private Hashtable directoryCache;
 private String[] missingPackageHolder = new String[1];
 private int mode; // ability to only consider one kind of files (source vs. binaries), by default use both
 private String encoding; // only useful if referenced in the source path
 private Hashtable<String, Hashtable<String, String>> packageSecondaryTypes = null;
 Map options;

 ClasspathDirectory(File directory, String encoding, int mode,
 		AccessRuleSet accessRuleSet, String destinationPath, Map options) {
 	super(accessRuleSet, destinationPath);
 	this.mode = mode;
 	this.options = options;
 	try {
 		this.path = directory.getCanonicalPath();
 	} catch (IOException e) {
 		// should not happen as we know that the file exists
 		this.path = directory.getAbsolutePath();
 	}
 	if (!this.path.endsWith(File.separator))
 		this.path += File.separator;
 	this.directoryCache = new Hashtable(11);
 	this.encoding = encoding;
 }
 String[] directoryList(String qualifiedPackageName) {
 	String[] dirList = (String[]) this.directoryCache.get(qualifiedPackageName);
 	if (dirList == this.missingPackageHolder) return null; // package exists in another classpath directory or jar
 	if (dirList != null) return dirList;

 	File dir = new File(this.path + qualifiedPackageName);
 	notFound : if (dir.isDirectory()) {
 		// must protect against a case insensitive File call
 		// walk the qualifiedPackageName backwards looking for an uppercase character before the '/'
 		int index = qualifiedPackageName.length();
 		int last = qualifiedPackageName.lastIndexOf(File.separatorChar);
 		while (--index > last && !ScannerHelper.isUpperCase(qualifiedPackageName.charAt(index))){/*empty*/}
 		if (index > last) {
 			if (last == -1) {
 				if (!doesFileExist(qualifiedPackageName, Util.EMPTY_STRING))
 					break notFound;
 			} else {
 				String packageName = qualifiedPackageName.substring(last + 1);
 				String parentPackage = qualifiedPackageName.substring(0, last);
 				if (!doesFileExist(packageName, parentPackage))
 					break notFound;
 			}
 		}
 		if ((dirList = dir.list()) == null)
 			dirList = CharOperation.NO_STRINGS;
 		this.directoryCache.put(qualifiedPackageName, dirList);
 		return dirList;
 	}
 	this.directoryCache.put(qualifiedPackageName, this.missingPackageHolder);
 	return null;
 }
 boolean doesFileExist(String fileName, String qualifiedPackageName) {
 	String[] dirList = directoryList(qualifiedPackageName);
 	if (dirList == null) return false; // most common case

 	for (int i = dirList.length; --i >= 0;)
 		if (fileName.equals(dirList[i]))
 			return true;
 	return false;
 }
 @Override
 public List fetchLinkedJars(FileSystem.ClasspathSectionProblemReporter problemReporter) {
 	return null;
 }
 private NameEnvironmentAnswer findClassInternal(char[] typeName, String qualifiedPackageName, String qualifiedBinaryFileName, boolean asBinaryOnly) {
 	if (!isPackage(qualifiedPackageName, null)) return null; // most common case TODO(SHMOD): use module name from this.module?
 //{ObjectTeams: make configurable via Dependencies:
 	int adjustedMode = this.mode;
 	if (Config.getSourceTypeRequired())
 		adjustedMode = SOURCE;
 // SH}

 	String fileName = new String(typeName);
 //{ObjectTeams: was "this.mode" instead of adjustedMode
 	boolean binaryExists = ((adjustedMode & BINARY) != 0) && doesFileExist(fileName + SUFFIX_STRING_class, qualifiedPackageName);
 	boolean sourceExists = ((adjustedMode & SOURCE) != 0) && doesFileExist(fileName + SUFFIX_STRING_java, qualifiedPackageName);
 // SH}
 	if (sourceExists && !asBinaryOnly) {
 		String fullSourcePath = this.path + qualifiedBinaryFileName.substring(0, qualifiedBinaryFileName.length() - 6)  + SUFFIX_STRING_java;
 		CompilationUnit unit = new CompilationUnit(null, fullSourcePath, this.encoding, this.destinationPath);
 		unit.module = this.module == null ? null : this.module.name();
 		if (!binaryExists)
 			return new NameEnvironmentAnswer(unit,
 					fetchAccessRestriction(qualifiedBinaryFileName));
 		String fullBinaryPath = this.path + qualifiedBinaryFileName;
 		long binaryModified = new File(fullBinaryPath).lastModified();
 		long sourceModified = new File(fullSourcePath).lastModified();
 		if (sourceModified > binaryModified)
 			return new NameEnvironmentAnswer(unit,
 					fetchAccessRestriction(qualifiedBinaryFileName));
 	}
 	if (binaryExists) {
 		try {
 			ClassFileReader reader = ClassFileReader.read(this.path + qualifiedBinaryFileName);
 			// https://bugs.eclipse.org/bugs/show_bug.cgi?id=321115, package names are to be treated case sensitive.
 			String typeSearched = qualifiedPackageName.length() > 0 ?
 					qualifiedPackageName.replace(File.separatorChar, '/') + "/" + fileName //$NON-NLS-1$
 					: fileName;
 			if (!CharOperation.equals(reader.getName(), typeSearched.toCharArray())) {
 				reader = null;
 			}
 			if (reader != null) {
 				char[] modName = reader.moduleName != null ? reader.moduleName : this.module != null ? this.module.name() : null;
 				return new NameEnvironmentAnswer(
 						reader,
 						fetchAccessRestriction(qualifiedBinaryFileName),
 						modName);
 			}
 		} catch (IOException | ClassFormatException e) {
 			// treat as if file is missing
 		}
 	}
 	return null;
 }
 public NameEnvironmentAnswer findSecondaryInClass(char[] typeName, String qualifiedPackageName, String qualifiedBinaryFileName) {
 	//"package-info" is a reserved class name and can never be a secondary type (it is much faster to stop the search here).
 	if(CharOperation.equals(TypeConstants.PACKAGE_INFO_NAME, typeName)) {
 		return null;
 	}

 	String typeNameString = new String(typeName);
 	String moduleName = this.module != null ? String.valueOf(this.module.name()) : null; // TODO(SHMOD): test for ModuleBinding.ANY & UNNAMED
 	boolean prereqs = this.options != null && isPackage(qualifiedPackageName, moduleName) && ((this.mode & SOURCE) != 0) && doesFileExist(typeNameString + SUFFIX_STRING_java, qualifiedPackageName);
 	return prereqs ? null : findSourceSecondaryType(typeNameString, qualifiedPackageName, qualifiedBinaryFileName); /* only secondary types */
 }

 @Override
 public boolean hasAnnotationFileFor(String qualifiedTypeName) {
 	int pos = qualifiedTypeName.lastIndexOf('/');
 	if (pos != -1 && (pos + 1 < qualifiedTypeName.length())) {
 		String fileName = qualifiedTypeName.substring(pos + 1) + ExternalAnnotationProvider.ANNOTATION_FILE_SUFFIX;
 		return doesFileExist(fileName, qualifiedTypeName.substring(0, pos));
 	}
 	return false;
 }
 @Override
 public NameEnvironmentAnswer findClass(char[] typeName, String qualifiedPackageName, String moduleName, String qualifiedBinaryFileName) {
 	return findClass(typeName, qualifiedPackageName, moduleName, qualifiedBinaryFileName, false);
 }
 @Override
 public NameEnvironmentAnswer findClass(char[] typeName, String qualifiedPackageName, String moduleName, String qualifiedBinaryFileName, boolean asBinaryOnly) {
 	if (File.separatorChar == '/')
       return findClassInternal(typeName, qualifiedPackageName, qualifiedBinaryFileName, asBinaryOnly);

 	return findClassInternal(typeName, qualifiedPackageName.replace('/', File.separatorChar),
 				qualifiedBinaryFileName.replace('/', File.separatorChar), asBinaryOnly);
 }
 /**
  *  Add all the secondary types in the package
  */
 private Hashtable<String, String> getSecondaryTypes(String qualifiedPackageName) {
 	Hashtable<String, String> packageEntry = new Hashtable<>();

 	String[] dirList = (String[]) this.directoryCache.get(qualifiedPackageName);
 	if (dirList == this.missingPackageHolder // package exists in another classpath directory or jar
 			|| dirList == null)
 		return packageEntry;

 	File dir = new File(this.path + qualifiedPackageName);
 	File[] listFiles = dir.isDirectory() ? dir.listFiles() : null;
 	if (listFiles == null) return packageEntry;

 	for (int i = 0, l = listFiles.length; i < l; ++i) {
 		File f = listFiles[i];
 		if (f.isDirectory()) continue;
 		String s = f.getAbsolutePath();
 		if (s == null) continue;
 		if (!(s.endsWith(SUFFIX_STRING_java) || s.endsWith(SUFFIX_STRING_JAVA))) continue;
 		CompilationUnit cu = new CompilationUnit(null, s, this.encoding, this.destinationPath);
 		CompilationResult compilationResult = new CompilationResult(s.toCharArray(), 1, 1, 10);
 		ProblemReporter problemReporter =
 				new ProblemReporter(
 					DefaultErrorHandlingPolicies.proceedWithAllProblems(),
 					new CompilerOptions(this.options),
 					new DefaultProblemFactory());
 		Parser parser = new Parser(problemReporter, false);
 		parser.reportSyntaxErrorIsRequired = false;

 		CompilationUnitDeclaration unit = parser.parse(cu, compilationResult);
 		org.eclipse.jdt.internal.compiler.ast.TypeDeclaration[] types = unit != null ? unit.types : null;
 		if (types == null) continue;
 		for (int j = 0, k = types.length; j < k; j++) {
 			TypeDeclaration type = types[j];
 			char[] name = type.isSecondary() ? type.name : null;  // add only secondary types
 			if (name != null)
 				packageEntry.put(new String(name), s);
 		}
 	}
 	return packageEntry;
 }
 private NameEnvironmentAnswer findSourceSecondaryType(String typeName, String qualifiedPackageName, String qualifiedBinaryFileName) {

 	if (this.packageSecondaryTypes == null) this.packageSecondaryTypes = new Hashtable<>();
 	Hashtable<String, String> packageEntry = this.packageSecondaryTypes.get(qualifiedPackageName);
 	if (packageEntry == null) {
 		packageEntry = 	getSecondaryTypes(qualifiedPackageName);
 		this.packageSecondaryTypes.put(qualifiedPackageName, packageEntry);
 	}
 	String fileName = packageEntry.get(typeName);
 	return fileName != null ? new NameEnvironmentAnswer(new CompilationUnit(null,
 			fileName, this.encoding, this.destinationPath),
 			fetchAccessRestriction(qualifiedBinaryFileName)) : null;
 }


 @Override
 public char[][][] findTypeNames(String qualifiedPackageName, String moduleName) {
 	if (!isPackage(qualifiedPackageName, moduleName)) {
 		return null; // most common case
 	}
 	File dir = new File(this.path + qualifiedPackageName);
 	if (!dir.exists() || !dir.isDirectory()) {
 		return null;
 	}
 	String[] listFiles = dir.list(new FilenameFilter() {
 		@Override
 		public boolean accept(File directory1, String name) {
 			String fileName = name.toLowerCase();
 			return fileName.endsWith(".class") || fileName.endsWith(".java"); //$NON-NLS-1$ //$NON-NLS-2$
 		}
 	});
 	int length;
 	if (listFiles == null || (length = listFiles.length) == 0) {
 		return null;
 	}
 	Set<String> secondary = getSecondaryTypes(qualifiedPackageName).keySet();
 	char[][][] result = new char[length + secondary.size()][][];
 	char[][] packageName = CharOperation.splitOn(File.separatorChar, qualifiedPackageName.toCharArray());
 	for (int i = 0; i < length; i++) {
 		String fileName = listFiles[i];
 		int indexOfLastDot = fileName.indexOf('.');
 		String typeName = indexOfLastDot > 0 ? fileName.substring(0, indexOfLastDot) : fileName;
 		result[i] = CharOperation.arrayConcat(packageName, typeName.toCharArray());
 	}
 	if (secondary.size() > 0) {
 		int idx = length;
 		for (String type : secondary) {
 			result[idx++] = CharOperation.arrayConcat(packageName, type.toCharArray());
 		}
 	}
 	return result;
 }
 @Override
 public void initialize() throws IOException {
 	// nothing to do
 }
 @Override
 public char[][] getModulesDeclaringPackage(String qualifiedPackageName, /*@Nullable*/String moduleName) {
 	String qp2 = File.separatorChar == '/' ? qualifiedPackageName : qualifiedPackageName.replace('/', File.separatorChar);
 	return singletonModuleNameIf(directoryList(qp2) != null);
 }
 @Override
 public boolean hasCompilationUnit(String qualifiedPackageName, String moduleName) {
 	String qp2 = File.separatorChar == '/' ? qualifiedPackageName : qualifiedPackageName.replace('/', File.separatorChar);
 	String[] dirList = directoryList(qp2);
 	if (dirList != null) {
 		for (String entry : dirList) {
 			String entryLC = entry.toLowerCase();
 			if (entryLC.endsWith(SUFFIX_STRING_java) || entryLC.endsWith(SUFFIX_STRING_class))
 				return true;
 		}
 	}
 	return false;
 }
 @Override
 public boolean hasCUDeclaringPackage(String qualifiedPackageName, Function<CompilationUnit, String> pkgNameExtractor) {
 	String qp2 = File.separatorChar == '/' ? qualifiedPackageName : qualifiedPackageName.replace('/', File.separatorChar);
 	return Stream.of(directoryList(qp2)).anyMatch(entry -> {
 		String entryLC = entry.toLowerCase();
 		boolean hasDeclaration = false;
 		String fullPath = this.path + qp2 + "/" + entry; //$NON-NLS-1$
 		String pkgName = null;
 		if (entryLC.endsWith(SUFFIX_STRING_class)) {
 			return true;
 		} else if (entryLC.endsWith(SUFFIX_STRING_java)) {
 			CompilationUnit cu = new CompilationUnit(null, fullPath, this.encoding);
 			pkgName = pkgNameExtractor.apply(cu);
 		}
 		if (pkgName != null && pkgName.equals(qp2.replace(File.separatorChar, '.')))
 			hasDeclaration = true;
 		return hasDeclaration;
 	});
 }

 @Override
 public char[][] listPackages() {
 	Set<String> packageNames = new HashSet<>();
 	try {
 		Path basePath = FileSystems.getDefault().getPath(this.path);
 		Files.walkFileTree(basePath, new SimpleFileVisitor<Path>() {
 			@Override
 			public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) {
 				if (file.toString().toLowerCase().endsWith(SUFFIX_STRING_class)) {
 					packageNames.add(file.getParent().relativize(basePath).toString().replace('/', '.'));
 				}
 				return FileVisitResult.CONTINUE;
 			}
 		});
 	} catch (IOException e) {
 		// treat as if files are missing
 	}
 	return packageNames.stream().map(String::toCharArray).toArray(char[][]::new);
 }

 @Override
 public void reset() {
 	super.reset();
 	this.directoryCache = new Hashtable(11);
 }
 @Override
 public String toString() {
 	return "ClasspathDirectory " + this.path; //$NON-NLS-1$
 }
 @Override
 public char[] normalizedPath() {
 	if (this.normalizedPath == null) {
 		this.normalizedPath = this.path.toCharArray();
 		if (File.separatorChar == '\\') {
 			CharOperation.replace(this.normalizedPath, '\\', '/');
 		}
 	}
 	return this.normalizedPath;
 }
 @Override
 public String getPath() {
 	return this.path;
 }
 @Override
 public int getMode() {
 	return this.mode;
 }
 @Override
 public IModule getModule() {
 	return this.module;
 }
 }
	/*******************************************************************************
	* Copyright (c) 2000, 2018 IBM Corporation and others.
	*
	* This program and the accompanying materials
	* are made available under the terms of the Eclipse Public License 2.0
	* which accompanies this distribution, and is available at
	* https://www.eclipse.org/legal/epl-2.0/
	*
	* SPDX-License-Identifier: EPL-2.0
	*
	* Contributors:
	* IBM Corporation - initial API and implementation
	* Stephan Herrmann - Contribution for
	* Bug 440687 - [compiler][batch][null] improve command line option for external annotations
	* Lars Vogel <Lars.Vogel@vogella.com> - Contributions for
	* Bug 473178
	*******************************************************************************/
	package org.eclipse.jdt.internal.compiler.batch;

	import org.eclipse.jdt.core.compiler.CharOperation;
	import org.eclipse.jdt.internal.compiler.CompilationResult;
	import org.eclipse.jdt.internal.compiler.DefaultErrorHandlingPolicies;
	import org.eclipse.jdt.internal.compiler.ast.CompilationUnitDeclaration;
	import org.eclipse.jdt.internal.compiler.ast.TypeDeclaration;
	import org.eclipse.jdt.internal.compiler.classfmt.ClassFileReader;
	import org.eclipse.jdt.internal.compiler.classfmt.ClassFormatException;
	import org.eclipse.jdt.internal.compiler.classfmt.ExternalAnnotationProvider;
	import org.eclipse.jdt.internal.compiler.env.AccessRuleSet;
	import org.eclipse.jdt.internal.compiler.env.IModule;
	import org.eclipse.jdt.internal.compiler.env.NameEnvironmentAnswer;
	import org.eclipse.jdt.internal.compiler.impl.CompilerOptions;
	import org.eclipse.jdt.internal.compiler.lookup.TypeConstants;
	import org.eclipse.jdt.internal.compiler.parser.Parser;
	import org.eclipse.jdt.internal.compiler.parser.ScannerHelper;
	import org.eclipse.jdt.internal.compiler.problem.DefaultProblemFactory;
	import org.eclipse.jdt.internal.compiler.problem.ProblemReporter;
	import org.eclipse.jdt.internal.compiler.util.Util;
	import org.eclipse.objectteams.otdt.internal.core.compiler.control.Config;

	import java.io.File;
	import java.io.FilenameFilter;
	import java.io.IOException;
	import java.nio.file.FileSystems;
	import java.nio.file.FileVisitResult;
	import java.nio.file.Files;
	import java.nio.file.Path;
	import java.nio.file.SimpleFileVisitor;
	import java.nio.file.attribute.BasicFileAttributes;
	import java.util.HashSet;
	import java.util.Hashtable;
	import java.util.List;
	import java.util.Map;
	import java.util.Set;
	import java.util.function.Function;
	import java.util.stream.Stream;

	/**
	* OTDT changes:
	* What: allow batch compiler to force mode == SOURCE
	* Why: getTeamOfRoleFile may require a source team.
	*/
	@SuppressWarnings({"rawtypes", "unchecked"})
	public class ClasspathDirectory extends ClasspathLocation {

	private Hashtable directoryCache;
	private String[] missingPackageHolder = new String[1];
	private int mode; // ability to only consider one kind of files (source vs. binaries), by default use both
	private String encoding; // only useful if referenced in the source path
	private Hashtable<String, Hashtable<String, String>> packageSecondaryTypes = null;
	Map options;

	ClasspathDirectory(File directory, String encoding, int mode,
	AccessRuleSet accessRuleSet, String destinationPath, Map options) {
	super(accessRuleSet, destinationPath);
	this.mode = mode;
	this.options = options;
	try {
	this.path = directory.getCanonicalPath();
	} catch (IOException e) {
	// should not happen as we know that the file exists
	this.path = directory.getAbsolutePath();
	}
	if (!this.path.endsWith(File.separator))
	this.path += File.separator;
	this.directoryCache = new Hashtable(11);
	this.encoding = encoding;
	}
	String[] directoryList(String qualifiedPackageName) {
	String[] dirList = (String[]) this.directoryCache.get(qualifiedPackageName);
	if (dirList == this.missingPackageHolder) return null; // package exists in another classpath directory or jar
	if (dirList != null) return dirList;

	File dir = new File(this.path + qualifiedPackageName);
	notFound : if (dir.isDirectory()) {
	// must protect against a case insensitive File call
	// walk the qualifiedPackageName backwards looking for an uppercase character before the '/'
	int index = qualifiedPackageName.length();
	int last = qualifiedPackageName.lastIndexOf(File.separatorChar);
	while (--index > last && !ScannerHelper.isUpperCase(qualifiedPackageName.charAt(index))){/empty/}
	if (index > last) {
	if (last == -1) {
	if (!doesFileExist(qualifiedPackageName, Util.EMPTY_STRING))
	break notFound;
	} else {
	String packageName = qualifiedPackageName.substring(last + 1);
	String parentPackage = qualifiedPackageName.substring(0, last);
	if (!doesFileExist(packageName, parentPackage))
	break notFound;
	}
	}
	if ((dirList = dir.list()) == null)
	dirList = CharOperation.NO_STRINGS;
	this.directoryCache.put(qualifiedPackageName, dirList);
	return dirList;
	}
	this.directoryCache.put(qualifiedPackageName, this.missingPackageHolder);
	return null;
	}
	boolean doesFileExist(String fileName, String qualifiedPackageName) {
	String[] dirList = directoryList(qualifiedPackageName);
	if (dirList == null) return false; // most common case

	for (int i = dirList.length; --i >= 0;)
	if (fileName.equals(dirList[i]))
	return true;
	return false;
	}
	@Override
	public List fetchLinkedJars(FileSystem.ClasspathSectionProblemReporter problemReporter) {
	return null;
	}
	private NameEnvironmentAnswer findClassInternal(char[] typeName, String qualifiedPackageName, String qualifiedBinaryFileName, boolean asBinaryOnly) {
	if (!isPackage(qualifiedPackageName, null)) return null; // most common case TODO(SHMOD): use module name from this.module?
	//{ObjectTeams: make configurable via Dependencies:
	int adjustedMode = this.mode;
	if (Config.getSourceTypeRequired())
	adjustedMode = SOURCE;
	// SH}

	String fileName = new String(typeName);
	//{ObjectTeams: was "this.mode" instead of adjustedMode
	boolean binaryExists = ((adjustedMode & BINARY) != 0) && doesFileExist(fileName + SUFFIX_STRING_class, qualifiedPackageName);
	boolean sourceExists = ((adjustedMode & SOURCE) != 0) && doesFileExist(fileName + SUFFIX_STRING_java, qualifiedPackageName);
	// SH}
	if (sourceExists && !asBinaryOnly) {
	String fullSourcePath = this.path + qualifiedBinaryFileName.substring(0, qualifiedBinaryFileName.length() - 6) + SUFFIX_STRING_java;
	CompilationUnit unit = new CompilationUnit(null, fullSourcePath, this.encoding, this.destinationPath);
	unit.module = this.module == null ? null : this.module.name();
	if (!binaryExists)
	return new NameEnvironmentAnswer(unit,
	fetchAccessRestriction(qualifiedBinaryFileName));
	String fullBinaryPath = this.path + qualifiedBinaryFileName;
	long binaryModified = new File(fullBinaryPath).lastModified();
	long sourceModified = new File(fullSourcePath).lastModified();
	if (sourceModified > binaryModified)
	return new NameEnvironmentAnswer(unit,
	fetchAccessRestriction(qualifiedBinaryFileName));
	}
	if (binaryExists) {
	try {
	ClassFileReader reader = ClassFileReader.read(this.path + qualifiedBinaryFileName);
	// https://bugs.eclipse.org/bugs/show_bug.cgi?id=321115, package names are to be treated case sensitive.
	String typeSearched = qualifiedPackageName.length() > 0 ?
	qualifiedPackageName.replace(File.separatorChar, '/') + "/" + fileName //$NON-NLS-1$
	: fileName;
	if (!CharOperation.equals(reader.getName(), typeSearched.toCharArray())) {
	reader = null;
	}
	if (reader != null) {
	char[] modName = reader.moduleName != null ? reader.moduleName : this.module != null ? this.module.name() : null;
	return new NameEnvironmentAnswer(
	reader,
	fetchAccessRestriction(qualifiedBinaryFileName),
	modName);
	}
	} catch (IOException \| ClassFormatException e) {
	// treat as if file is missing
	}
	}
	return null;
	}
	public NameEnvironmentAnswer findSecondaryInClass(char[] typeName, String qualifiedPackageName, String qualifiedBinaryFileName) {
	//"package-info" is a reserved class name and can never be a secondary type (it is much faster to stop the search here).
	if(CharOperation.equals(TypeConstants.PACKAGE_INFO_NAME, typeName)) {
	return null;
	}

	String typeNameString = new String(typeName);
	String moduleName = this.module != null ? String.valueOf(this.module.name()) : null; // TODO(SHMOD): test for ModuleBinding.ANY & UNNAMED
	boolean prereqs = this.options != null && isPackage(qualifiedPackageName, moduleName) && ((this.mode & SOURCE) != 0) && doesFileExist(typeNameString + SUFFIX_STRING_java, qualifiedPackageName);
	return prereqs ? null : findSourceSecondaryType(typeNameString, qualifiedPackageName, qualifiedBinaryFileName); /* only secondary types */
	}

	@Override
	public boolean hasAnnotationFileFor(String qualifiedTypeName) {
	int pos = qualifiedTypeName.lastIndexOf('/');
	if (pos != -1 && (pos + 1 < qualifiedTypeName.length())) {
	String fileName = qualifiedTypeName.substring(pos + 1) + ExternalAnnotationProvider.ANNOTATION_FILE_SUFFIX;
	return doesFileExist(fileName, qualifiedTypeName.substring(0, pos));
	}
	return false;
	}
	@Override
	public NameEnvironmentAnswer findClass(char[] typeName, String qualifiedPackageName, String moduleName, String qualifiedBinaryFileName) {
	return findClass(typeName, qualifiedPackageName, moduleName, qualifiedBinaryFileName, false);
	}
	@Override
	public NameEnvironmentAnswer findClass(char[] typeName, String qualifiedPackageName, String moduleName, String qualifiedBinaryFileName, boolean asBinaryOnly) {
	if (File.separatorChar == '/')
	return findClassInternal(typeName, qualifiedPackageName, qualifiedBinaryFileName, asBinaryOnly);

	return findClassInternal(typeName, qualifiedPackageName.replace('/', File.separatorChar),
	qualifiedBinaryFileName.replace('/', File.separatorChar), asBinaryOnly);
	}
	/**
	* Add all the secondary types in the package
	*/
	private Hashtable<String, String> getSecondaryTypes(String qualifiedPackageName) {
	Hashtable<String, String> packageEntry = new Hashtable<>();

	String[] dirList = (String[]) this.directoryCache.get(qualifiedPackageName);
	if (dirList == this.missingPackageHolder // package exists in another classpath directory or jar
	\|\| dirList == null)
	return packageEntry;

	File dir = new File(this.path + qualifiedPackageName);
	File[] listFiles = dir.isDirectory() ? dir.listFiles() : null;
	if (listFiles == null) return packageEntry;

	for (int i = 0, l = listFiles.length; i < l; ++i) {
	File f = listFiles[i];
	if (f.isDirectory()) continue;
	String s = f.getAbsolutePath();
	if (s == null) continue;
	if (!(s.endsWith(SUFFIX_STRING_java) \|\| s.endsWith(SUFFIX_STRING_JAVA))) continue;
	CompilationUnit cu = new CompilationUnit(null, s, this.encoding, this.destinationPath);
	CompilationResult compilationResult = new CompilationResult(s.toCharArray(), 1, 1, 10);
	ProblemReporter problemReporter =
	new ProblemReporter(
	DefaultErrorHandlingPolicies.proceedWithAllProblems(),
	new CompilerOptions(this.options),
	new DefaultProblemFactory());
	Parser parser = new Parser(problemReporter, false);
	parser.reportSyntaxErrorIsRequired = false;

	CompilationUnitDeclaration unit = parser.parse(cu, compilationResult);
	org.eclipse.jdt.internal.compiler.ast.TypeDeclaration[] types = unit != null ? unit.types : null;
	if (types == null) continue;
	for (int j = 0, k = types.length; j < k; j++) {
	TypeDeclaration type = types[j];
	char[] name = type.isSecondary() ? type.name : null; // add only secondary types
	if (name != null)
	packageEntry.put(new String(name), s);
	}
	}
	return packageEntry;
	}
	private NameEnvironmentAnswer findSourceSecondaryType(String typeName, String qualifiedPackageName, String qualifiedBinaryFileName) {

	if (this.packageSecondaryTypes == null) this.packageSecondaryTypes = new Hashtable<>();
	Hashtable<String, String> packageEntry = this.packageSecondaryTypes.get(qualifiedPackageName);
	if (packageEntry == null) {
	packageEntry = getSecondaryTypes(qualifiedPackageName);
	this.packageSecondaryTypes.put(qualifiedPackageName, packageEntry);
	}
	String fileName = packageEntry.get(typeName);
	return fileName != null ? new NameEnvironmentAnswer(new CompilationUnit(null,
	fileName, this.encoding, this.destinationPath),
	fetchAccessRestriction(qualifiedBinaryFileName)) : null;
	}


	@Override
	public char[][][] findTypeNames(String qualifiedPackageName, String moduleName) {
	if (!isPackage(qualifiedPackageName, moduleName)) {
	return null; // most common case
	}
	File dir = new File(this.path + qualifiedPackageName);
	if (!dir.exists() \|\| !dir.isDirectory()) {
	return null;
	}
	String[] listFiles = dir.list(new FilenameFilter() {
	@Override
	public boolean accept(File directory1, String name) {
	String fileName = name.toLowerCase();
	return fileName.endsWith(".class") \|\| fileName.endsWith(".java"); //$NON-NLS-1$ //$NON-NLS-2$
	}
	});
	int length;
	if (listFiles == null \|\| (length = listFiles.length) == 0) {
	return null;
	}
	Set<String> secondary = getSecondaryTypes(qualifiedPackageName).keySet();
	char[][][] result = new char[length + secondary.size()][][];
	char[][] packageName = CharOperation.splitOn(File.separatorChar, qualifiedPackageName.toCharArray());
	for (int i = 0; i < length; i++) {
	String fileName = listFiles[i];
	int indexOfLastDot = fileName.indexOf('.');
	String typeName = indexOfLastDot > 0 ? fileName.substring(0, indexOfLastDot) : fileName;
	result[i] = CharOperation.arrayConcat(packageName, typeName.toCharArray());
	}
	if (secondary.size() > 0) {
	int idx = length;
	for (String type : secondary) {
	result[idx++] = CharOperation.arrayConcat(packageName, type.toCharArray());
	}
	}
	return result;
	}
	@Override
	public void initialize() throws IOException {
	// nothing to do
	}
	@Override
	public char[][] getModulesDeclaringPackage(String qualifiedPackageName, /@Nullable/String moduleName) {
	String qp2 = File.separatorChar == '/' ? qualifiedPackageName : qualifiedPackageName.replace('/', File.separatorChar);
	return singletonModuleNameIf(directoryList(qp2) != null);
	}
	@Override
	public boolean hasCompilationUnit(String qualifiedPackageName, String moduleName) {
	String qp2 = File.separatorChar == '/' ? qualifiedPackageName : qualifiedPackageName.replace('/', File.separatorChar);
	String[] dirList = directoryList(qp2);
	if (dirList != null) {
	for (String entry : dirList) {
	String entryLC = entry.toLowerCase();
	if (entryLC.endsWith(SUFFIX_STRING_java) \|\| entryLC.endsWith(SUFFIX_STRING_class))
	return true;
	}
	}
	return false;
	}
	@Override
	public boolean hasCUDeclaringPackage(String qualifiedPackageName, Function<CompilationUnit, String> pkgNameExtractor) {
	String qp2 = File.separatorChar == '/' ? qualifiedPackageName : qualifiedPackageName.replace('/', File.separatorChar);
	return Stream.of(directoryList(qp2)).anyMatch(entry -> {
	String entryLC = entry.toLowerCase();
	boolean hasDeclaration = false;
	String fullPath = this.path + qp2 + "/" + entry; //$NON-NLS-1$
	String pkgName = null;
	if (entryLC.endsWith(SUFFIX_STRING_class)) {
	return true;
	} else if (entryLC.endsWith(SUFFIX_STRING_java)) {
	CompilationUnit cu = new CompilationUnit(null, fullPath, this.encoding);
	pkgName = pkgNameExtractor.apply(cu);
	}
	if (pkgName != null && pkgName.equals(qp2.replace(File.separatorChar, '.')))
	hasDeclaration = true;
	return hasDeclaration;
	});
	}

	@Override
	public char[][] listPackages() {
	Set<String> packageNames = new HashSet<>();
	try {
	Path basePath = FileSystems.getDefault().getPath(this.path);
	Files.walkFileTree(basePath, new SimpleFileVisitor<Path>() {
	@Override
	public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) {
	if (file.toString().toLowerCase().endsWith(SUFFIX_STRING_class)) {
	packageNames.add(file.getParent().relativize(basePath).toString().replace('/', '.'));
	}
	return FileVisitResult.CONTINUE;
	}
	});
	} catch (IOException e) {
	// treat as if files are missing
	}
	return packageNames.stream().map(String::toCharArray).toArray(char[][]::new);
	}

	@Override
	public void reset() {
	super.reset();
	this.directoryCache = new Hashtable(11);
	}
	@Override
	public String toString() {
	return "ClasspathDirectory " + this.path; //$NON-NLS-1$
	}
	@Override
	public char[] normalizedPath() {
	if (this.normalizedPath == null) {
	this.normalizedPath = this.path.toCharArray();
	if (File.separatorChar == '\\') {
	CharOperation.replace(this.normalizedPath, '\\', '/');
	}
	}
	return this.normalizedPath;
	}
	@Override
	public String getPath() {
	return this.path;
	}
	@Override
	public int getMode() {
	return this.mode;
	}
	@Override
	public IModule getModule() {
	return this.module;
	}
	}