org.eclipse.jdt.core/model/org/eclipse/jdt/internal/core/builder/ClasspathJrt.java - jdt/eclipse.jdt.core - Git at Google

 /*******************************************************************************
  * Copyright (c) 2016 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/epl-v10.html
  *
  * This is an implementation of an early-draft specification developed under the Java
  * Community Process (JCP) and is made available for testing and evaluation purposes
  * only. The code is not compatible with any specification of the JCP.
  *
  * Contributors:
  *     IBM Corporation - initial API and implementation
  *******************************************************************************/
 package org.eclipse.jdt.internal.core.builder;

 import java.io.File;
 import java.io.IOException;
 import java.nio.file.FileVisitResult;
 import java.nio.file.Path;
 import java.nio.file.attribute.BasicFileAttributes;
 import java.util.Collection;
 import java.util.HashMap;
 import java.util.HashSet;
 import java.util.Optional;
 import java.util.Set;
 import java.util.function.Function;
 import java.util.zip.ZipFile;

 import org.eclipse.core.runtime.IPath;
 import org.eclipse.jdt.core.compiler.CharOperation;
 import org.eclipse.jdt.internal.compiler.classfmt.ClassFileReader;
 import org.eclipse.jdt.internal.compiler.classfmt.ClassFormatException;
 import org.eclipse.jdt.internal.compiler.classfmt.ExternalAnnotationDecorator;
 import org.eclipse.jdt.internal.compiler.env.IBinaryType;
 import org.eclipse.jdt.internal.compiler.env.IModule;
 import org.eclipse.jdt.internal.compiler.env.IModuleEnvironment;
 import org.eclipse.jdt.internal.compiler.env.IMultiModuleEntry;
 import org.eclipse.jdt.internal.compiler.env.IMultiModulePackageLookup;
 import org.eclipse.jdt.internal.compiler.env.IMultiModuleTypeLookup;
 import org.eclipse.jdt.internal.compiler.env.INameEnvironment;
 import org.eclipse.jdt.internal.compiler.env.NameEnvironmentAnswer;
 import org.eclipse.jdt.internal.compiler.env.IPackageLookup;
 import org.eclipse.jdt.internal.compiler.env.ITypeLookup;
 import org.eclipse.jdt.internal.compiler.util.JRTUtil;
 import org.eclipse.jdt.internal.compiler.util.SimpleSet;
 import org.eclipse.jdt.internal.compiler.util.SuffixConstants;

 public class ClasspathJrt extends ClasspathLocation implements IMultiModuleEntry {

 //private HashMap<String, SimpleSet> packagesInModule = null;
 private static HashMap<String, HashMap<String, SimpleSet>> PackageCache = new HashMap<>();
 private static HashMap<String, Set<IModule>> ModulesCache = new HashMap<>();
 INameEnvironment env = null;
 private String externalAnnotationPath;
 private ZipFile annotationZipFile;
 String zipFilename; // keep for equals

 protected Function<char[], ITypeLookup> typeLookupForModule = modName ->
 (typeName, qualifiedPackageName, qualifiedBinaryFileName, asBinaryOnly) -> {
 return typeLookup().findClass(typeName, qualifiedPackageName, qualifiedBinaryFileName, asBinaryOnly, modName);
 };

 protected Function<char[], IPackageLookup> pkgLookupForModule = modName ->
 qualifiedPackageName -> {
 return packageLookup().isPackage(qualifiedPackageName, modName);
 };

 public ClasspathJrt(String zipFilename, IPath externalAnnotationPath, INameEnvironment env) {
 	this.zipFilename = zipFilename;
 	this.env = env;
 	if (externalAnnotationPath != null)
 		this.externalAnnotationPath = externalAnnotationPath.toString();
 	loadModules(this);
 }
 /**
  * Calculate and cache the package list available in the zipFile.
  * @param jrt The ClasspathJar to use
  * @return A SimpleSet with the all the package names in the zipFile.
  */
 static HashMap<String, SimpleSet> findPackagesInModules(final ClasspathJrt jrt) {
 	String zipFileName = jrt.zipFilename;
 	HashMap<String, SimpleSet> cache = PackageCache.get(zipFileName);
 	if (cache != null) {
 		return cache;
 	}
 	final HashMap<String, SimpleSet> packagesInModule = new HashMap<>();
 	PackageCache.put(zipFileName, packagesInModule);
 	try {
 		final File imageFile = new File(zipFileName);
 		org.eclipse.jdt.internal.compiler.util.JRTUtil.walkModuleImage(imageFile,
 				new org.eclipse.jdt.internal.compiler.util.JRTUtil.JrtFileVisitor<Path>() {
 			SimpleSet packageSet = null;
 			@Override
 			public FileVisitResult visitPackage(Path dir, Path mod, BasicFileAttributes attrs) throws IOException {
 				ClasspathJar.addToPackageSet(this.packageSet, dir.toString(), true);
 				return FileVisitResult.CONTINUE;
 			}

 			@Override
 			public FileVisitResult visitFile(Path file, Path mod, BasicFileAttributes attrs) throws IOException {
 				return FileVisitResult.CONTINUE;
 			}

 			@Override
 			public FileVisitResult visitModule(Path mod) throws IOException {
 				String name = mod.toString();
 				try {
 					jrt.acceptModule(JRTUtil.getClassfileContent(imageFile, IModuleEnvironment.MODULE_INFO_CLASS, name));
 				} catch (ClassFormatException e) {
 					e.printStackTrace();
 				}
 				this.packageSet = new SimpleSet(41);
 				this.packageSet.add(""); //$NON-NLS-1$
 				packagesInModule.put(name, this.packageSet);
 				return FileVisitResult.CONTINUE;
 			}
 		}, JRTUtil.NOTIFY_PACKAGES | JRTUtil.NOTIFY_MODULES);
 	} catch (IOException e) {
 		// TODO: BETA_JAVA9 Should report better
 	}
 	return packagesInModule;
 }

 public static void loadModules(final ClasspathJrt jrt) {
 	String zipFileName = jrt.zipFilename;
 	Set<IModule> cache = ModulesCache.get(zipFileName);

 	if (cache == null) {
 		try {
 			final File imageFile = new File(zipFileName);
 			org.eclipse.jdt.internal.compiler.util.JRTUtil.walkModuleImage(imageFile,
 					new org.eclipse.jdt.internal.compiler.util.JRTUtil.JrtFileVisitor<Path>() {
 				SimpleSet packageSet = null;

 				@Override
 				public FileVisitResult visitPackage(Path dir, Path mod, BasicFileAttributes attrs)
 						throws IOException {
 					ClasspathJar.addToPackageSet(this.packageSet, dir.toString(), true);
 					return FileVisitResult.CONTINUE;
 				}

 				@Override
 				public FileVisitResult visitFile(Path file, Path mod, BasicFileAttributes attrs)
 						throws IOException {
 					return FileVisitResult.CONTINUE;
 				}

 				@Override
 				public FileVisitResult visitModule(Path mod) throws IOException {
 					try {
 						jrt.acceptModule(JRTUtil.getClassfileContent(imageFile, IModuleEnvironment.MODULE_INFO_CLASS, mod.toString()));
 					} catch (ClassFormatException e) {
 						e.printStackTrace();
 					}
 					return FileVisitResult.SKIP_SUBTREE;
 				}
 			}, JRTUtil.NOTIFY_MODULES);
 		} catch (IOException e) {
 			// TODO: BETA_JAVA9 Should report better
 		}
 	} else {
 //		for (IModuleDeclaration iModule : cache) {
 //			jimage.env.acceptModule(iModule, jimage);
 //		}
 	}
 }
 void acceptModule(byte[] content) {
 	if (content == null)
 		return;
 	ClassFileReader reader = null;
 	try {
 		reader = new ClassFileReader(content, IModuleEnvironment.MODULE_INFO_CLASS.toCharArray(), null);
 	} catch (ClassFormatException e) {
 		e.printStackTrace();
 	}
 	if (reader != null) {
 		IModule moduleDecl = reader.getModuleDeclaration();
 		if (moduleDecl != null) {
 			Set<IModule> cache = ModulesCache.get(this.zipFilename);
 			if (cache == null) {
 				ModulesCache.put(this.zipFilename, cache = new HashSet<IModule>());
 			}
 			cache.add(moduleDecl);
 		}
 	}
 }
 public void cleanup() {
 	if (this.annotationZipFile != null) {
 		try {
 			this.annotationZipFile.close();
 		} catch(IOException e) { // ignore it
 		}
 		this.annotationZipFile = null;
 	}
 }

 public boolean equals(Object o) {
 	if (this == o) return true;
 	if (!(o instanceof ClasspathJrt)) return false;
 	ClasspathJrt jar = (ClasspathJrt) o;
 	return this.zipFilename.endsWith(jar.zipFilename);
 }

 private NameEnvironmentAnswer findClass(String binaryFileName, String qualifiedPackageName, String qualifiedBinaryFileName, boolean asBinaryOnly, Optional<Collection<char[]>> moduleNames) {
 	if (!isPackage(qualifiedPackageName)) return null; // most common case

 	try {
 		IBinaryType reader = ClassFileReader.readFromModules(new File(this.zipFilename), qualifiedBinaryFileName, moduleNames);
 		if (reader != null) {
 			if (this.externalAnnotationPath != null) {
 				String fileNameWithoutExtension = qualifiedBinaryFileName.substring(0, qualifiedBinaryFileName.length() - SuffixConstants.SUFFIX_CLASS.length);
 				try {
 					if (this.annotationZipFile == null) {
 						this.annotationZipFile = ExternalAnnotationDecorator.getAnnotationZipFile(this.externalAnnotationPath, null);
 					}
 					reader = ExternalAnnotationDecorator.create(reader, this.externalAnnotationPath, fileNameWithoutExtension, this.annotationZipFile);
 				} catch (IOException e) {
 					// don't let error on annotations fail class reading
 				}
 			}
 			return new NameEnvironmentAnswer(reader, null, reader.getModule());
 		}
 	} catch (IOException e) { // treat as if class file is missing
 	} catch (ClassFormatException e) { // treat as if class file is missing
 	}
 	return null;
 }

 public IPath getProjectRelativePath() {
 	return null;
 }

 public int hashCode() {
 	return this.zipFilename == null ? super.hashCode() : this.zipFilename.hashCode();
 }
 @Override
 public boolean isPackage(String qualifiedPackageName) {
 	//
 	return isPackage(qualifiedPackageName, Optional.empty());
 }
 public boolean isPackage(String qualifiedPackageName, Optional<char[]> moduleName) {
 //	try {
 //		synchronized (this) {
 //			if (this.packagesInModule == null) {
 //				this.packagesInModule = findPackagesInModules(this);
 //			}
 //		}
 //	} catch(Exception e) {
 //		// TODO BETA_JAVA9
 //	}
 //	if (moduleName.isPresent()) {
 //		SimpleSet set = this.packagesInModule.get(moduleName.get());
 //		return set != null && set.includes(qualifiedPackageName);
 //	}
 //	Set<String> keySet = this.packagesInModule.keySet();
 //	for (String string : keySet) {
 //		SimpleSet set = this.packagesInModule.get(string);
 //		if (set.includes(qualifiedPackageName)) return true;
 //	}
 //
 //	return false;
 	return JRTUtil.isPackage(new File(this.zipFilename), qualifiedPackageName, moduleName);
 }

 public String toString() {
 	String start = "Classpath jrt file " + this.zipFilename; //$NON-NLS-1$
 	return start;
 }

 public String debugPathString() {
 	return this.zipFilename;
 }
 public NameEnvironmentAnswer findClass(char[] typeName, String qualifiedPackageName, String qualifiedBinaryFileName, boolean asBinaryOnly, Optional<Collection<char[]>> moduleNames) {
 	String fileName = new String(typeName);
 	return findClass(fileName, qualifiedPackageName, qualifiedBinaryFileName, asBinaryOnly, Optional.empty());
 }
 @Override
 public IModule getModule(char[] moduleName) {
 	Set<IModule> modules = ModulesCache.get(this.zipFilename);
 	if (modules != null) {
 		for (IModule mod : modules) {
 			if (CharOperation.equals(mod.name(), moduleName))
 					return mod;
 		}
 	}
 	return null;
 }
 @Override
 public IMultiModuleTypeLookup typeLookup() {
 	return this::findClass;
 }
 @Override
 public IMultiModulePackageLookup packageLookup() {
 	return this::isPackage;
 }

 @Override
 public IModuleEnvironment getLookupEnvironment() {
 	//
 	return this;
 }
 @Override
 public IModuleEnvironment getLookupEnvironmentFor(IModule mod) {
 	//
 	return new IModuleEnvironment() {

 		@Override
 		public ITypeLookup typeLookup() {
 			//
 			return servesModule(mod.name()) ? ClasspathJrt.this.typeLookupForModule.apply(mod.name()) : ITypeLookup.Dummy;
 		}

 		@Override
 		public IPackageLookup packageLookup() {
 			//
 			return servesModule(mod.name()) ? ClasspathJrt.this.pkgLookupForModule.apply(mod.name()) : IPackageLookup.Dummy;
 		}
 	};
 }
 @Override
 public NameEnvironmentAnswer findClass(String typeName, String qualifiedPackageName, String qualifiedBinaryFileName) {
 	//
 	return findClass(typeName, qualifiedPackageName, qualifiedBinaryFileName, false, Optional.empty());
 }
 @Override
 public NameEnvironmentAnswer findClass(String typeName, String qualifiedPackageName, String qualifiedBinaryFileName,
 		boolean asBinaryOnly) {
 	//
 	return findClass(typeName, qualifiedPackageName, qualifiedBinaryFileName, asBinaryOnly, Optional.empty());
 }

 }
	/*******************************************************************************
	* Copyright (c) 2016 IBM Corporation and others.
	* All rights reserved. This program and the accompanying materials
	* are made available under the terms of the Eclipse Public License v1.0
	* which accompanies this distribution, and is available at
	* http://www.eclipse.org/legal/epl-v10.html
	*
	* This is an implementation of an early-draft specification developed under the Java
	* Community Process (JCP) and is made available for testing and evaluation purposes
	* only. The code is not compatible with any specification of the JCP.
	*
	* Contributors:
	* IBM Corporation - initial API and implementation
	*******************************************************************************/
	package org.eclipse.jdt.internal.core.builder;

	import java.io.File;
	import java.io.IOException;
	import java.nio.file.FileVisitResult;
	import java.nio.file.Path;
	import java.nio.file.attribute.BasicFileAttributes;
	import java.util.Collection;
	import java.util.HashMap;
	import java.util.HashSet;
	import java.util.Optional;
	import java.util.Set;
	import java.util.function.Function;
	import java.util.zip.ZipFile;

	import org.eclipse.core.runtime.IPath;
	import org.eclipse.jdt.core.compiler.CharOperation;
	import org.eclipse.jdt.internal.compiler.classfmt.ClassFileReader;
	import org.eclipse.jdt.internal.compiler.classfmt.ClassFormatException;
	import org.eclipse.jdt.internal.compiler.classfmt.ExternalAnnotationDecorator;
	import org.eclipse.jdt.internal.compiler.env.IBinaryType;
	import org.eclipse.jdt.internal.compiler.env.IModule;
	import org.eclipse.jdt.internal.compiler.env.IModuleEnvironment;
	import org.eclipse.jdt.internal.compiler.env.IMultiModuleEntry;
	import org.eclipse.jdt.internal.compiler.env.IMultiModulePackageLookup;
	import org.eclipse.jdt.internal.compiler.env.IMultiModuleTypeLookup;
	import org.eclipse.jdt.internal.compiler.env.INameEnvironment;
	import org.eclipse.jdt.internal.compiler.env.NameEnvironmentAnswer;
	import org.eclipse.jdt.internal.compiler.env.IPackageLookup;
	import org.eclipse.jdt.internal.compiler.env.ITypeLookup;
	import org.eclipse.jdt.internal.compiler.util.JRTUtil;
	import org.eclipse.jdt.internal.compiler.util.SimpleSet;
	import org.eclipse.jdt.internal.compiler.util.SuffixConstants;

	public class ClasspathJrt extends ClasspathLocation implements IMultiModuleEntry {

	//private HashMap<String, SimpleSet> packagesInModule = null;
	private static HashMap<String, HashMap<String, SimpleSet>> PackageCache = new HashMap<>();
	private static HashMap<String, Set<IModule>> ModulesCache = new HashMap<>();
	INameEnvironment env = null;
	private String externalAnnotationPath;
	private ZipFile annotationZipFile;
	String zipFilename; // keep for equals

	protected Function<char[], ITypeLookup> typeLookupForModule = modName ->
	(typeName, qualifiedPackageName, qualifiedBinaryFileName, asBinaryOnly) -> {
	return typeLookup().findClass(typeName, qualifiedPackageName, qualifiedBinaryFileName, asBinaryOnly, modName);
	};

	protected Function<char[], IPackageLookup> pkgLookupForModule = modName ->
	qualifiedPackageName -> {
	return packageLookup().isPackage(qualifiedPackageName, modName);
	};

	public ClasspathJrt(String zipFilename, IPath externalAnnotationPath, INameEnvironment env) {
	this.zipFilename = zipFilename;
	this.env = env;
	if (externalAnnotationPath != null)
	this.externalAnnotationPath = externalAnnotationPath.toString();
	loadModules(this);
	}
	/**
	* Calculate and cache the package list available in the zipFile.
	* @param jrt The ClasspathJar to use
	* @return A SimpleSet with the all the package names in the zipFile.
	*/
	static HashMap<String, SimpleSet> findPackagesInModules(final ClasspathJrt jrt) {
	String zipFileName = jrt.zipFilename;
	HashMap<String, SimpleSet> cache = PackageCache.get(zipFileName);
	if (cache != null) {
	return cache;
	}
	final HashMap<String, SimpleSet> packagesInModule = new HashMap<>();
	PackageCache.put(zipFileName, packagesInModule);
	try {
	final File imageFile = new File(zipFileName);
	org.eclipse.jdt.internal.compiler.util.JRTUtil.walkModuleImage(imageFile,
	new org.eclipse.jdt.internal.compiler.util.JRTUtil.JrtFileVisitor<Path>() {
	SimpleSet packageSet = null;
	@Override
	public FileVisitResult visitPackage(Path dir, Path mod, BasicFileAttributes attrs) throws IOException {
	ClasspathJar.addToPackageSet(this.packageSet, dir.toString(), true);
	return FileVisitResult.CONTINUE;
	}

	@Override
	public FileVisitResult visitFile(Path file, Path mod, BasicFileAttributes attrs) throws IOException {
	return FileVisitResult.CONTINUE;
	}

	@Override
	public FileVisitResult visitModule(Path mod) throws IOException {
	String name = mod.toString();
	try {
	jrt.acceptModule(JRTUtil.getClassfileContent(imageFile, IModuleEnvironment.MODULE_INFO_CLASS, name));
	} catch (ClassFormatException e) {
	e.printStackTrace();
	}
	this.packageSet = new SimpleSet(41);
	this.packageSet.add(""); //$NON-NLS-1$
	packagesInModule.put(name, this.packageSet);
	return FileVisitResult.CONTINUE;
	}
	}, JRTUtil.NOTIFY_PACKAGES \| JRTUtil.NOTIFY_MODULES);
	} catch (IOException e) {
	// TODO: BETA_JAVA9 Should report better
	}
	return packagesInModule;
	}

	public static void loadModules(final ClasspathJrt jrt) {
	String zipFileName = jrt.zipFilename;
	Set<IModule> cache = ModulesCache.get(zipFileName);

	if (cache == null) {
	try {
	final File imageFile = new File(zipFileName);
	org.eclipse.jdt.internal.compiler.util.JRTUtil.walkModuleImage(imageFile,
	new org.eclipse.jdt.internal.compiler.util.JRTUtil.JrtFileVisitor<Path>() {
	SimpleSet packageSet = null;

	@Override
	public FileVisitResult visitPackage(Path dir, Path mod, BasicFileAttributes attrs)
	throws IOException {
	ClasspathJar.addToPackageSet(this.packageSet, dir.toString(), true);
	return FileVisitResult.CONTINUE;
	}

	@Override
	public FileVisitResult visitFile(Path file, Path mod, BasicFileAttributes attrs)
	throws IOException {
	return FileVisitResult.CONTINUE;
	}

	@Override
	public FileVisitResult visitModule(Path mod) throws IOException {
	try {
	jrt.acceptModule(JRTUtil.getClassfileContent(imageFile, IModuleEnvironment.MODULE_INFO_CLASS, mod.toString()));
	} catch (ClassFormatException e) {
	e.printStackTrace();
	}
	return FileVisitResult.SKIP_SUBTREE;
	}
	}, JRTUtil.NOTIFY_MODULES);
	} catch (IOException e) {
	// TODO: BETA_JAVA9 Should report better
	}
	} else {
	// for (IModuleDeclaration iModule : cache) {
	// jimage.env.acceptModule(iModule, jimage);
	// }
	}
	}
	void acceptModule(byte[] content) {
	if (content == null)
	return;
	ClassFileReader reader = null;
	try {
	reader = new ClassFileReader(content, IModuleEnvironment.MODULE_INFO_CLASS.toCharArray(), null);
	} catch (ClassFormatException e) {
	e.printStackTrace();
	}
	if (reader != null) {
	IModule moduleDecl = reader.getModuleDeclaration();
	if (moduleDecl != null) {
	Set<IModule> cache = ModulesCache.get(this.zipFilename);
	if (cache == null) {
	ModulesCache.put(this.zipFilename, cache = new HashSet<IModule>());
	}
	cache.add(moduleDecl);
	}
	}
	}
	public void cleanup() {
	if (this.annotationZipFile != null) {
	try {
	this.annotationZipFile.close();
	} catch(IOException e) { // ignore it
	}
	this.annotationZipFile = null;
	}
	}

	public boolean equals(Object o) {
	if (this == o) return true;
	if (!(o instanceof ClasspathJrt)) return false;
	ClasspathJrt jar = (ClasspathJrt) o;
	return this.zipFilename.endsWith(jar.zipFilename);
	}

	private NameEnvironmentAnswer findClass(String binaryFileName, String qualifiedPackageName, String qualifiedBinaryFileName, boolean asBinaryOnly, Optional<Collection<char[]>> moduleNames) {
	if (!isPackage(qualifiedPackageName)) return null; // most common case

	try {
	IBinaryType reader = ClassFileReader.readFromModules(new File(this.zipFilename), qualifiedBinaryFileName, moduleNames);
	if (reader != null) {
	if (this.externalAnnotationPath != null) {
	String fileNameWithoutExtension = qualifiedBinaryFileName.substring(0, qualifiedBinaryFileName.length() - SuffixConstants.SUFFIX_CLASS.length);
	try {
	if (this.annotationZipFile == null) {
	this.annotationZipFile = ExternalAnnotationDecorator.getAnnotationZipFile(this.externalAnnotationPath, null);
	}
	reader = ExternalAnnotationDecorator.create(reader, this.externalAnnotationPath, fileNameWithoutExtension, this.annotationZipFile);
	} catch (IOException e) {
	// don't let error on annotations fail class reading
	}
	}
	return new NameEnvironmentAnswer(reader, null, reader.getModule());
	}
	} catch (IOException e) { // treat as if class file is missing
	} catch (ClassFormatException e) { // treat as if class file is missing
	}
	return null;
	}

	public IPath getProjectRelativePath() {
	return null;
	}

	public int hashCode() {
	return this.zipFilename == null ? super.hashCode() : this.zipFilename.hashCode();
	}
	@Override
	public boolean isPackage(String qualifiedPackageName) {
	//
	return isPackage(qualifiedPackageName, Optional.empty());
	}
	public boolean isPackage(String qualifiedPackageName, Optional<char[]> moduleName) {
	// try {
	// synchronized (this) {
	// if (this.packagesInModule == null) {
	// this.packagesInModule = findPackagesInModules(this);
	// }
	// }
	// } catch(Exception e) {
	// // TODO BETA_JAVA9
	// }
	// if (moduleName.isPresent()) {
	// SimpleSet set = this.packagesInModule.get(moduleName.get());
	// return set != null && set.includes(qualifiedPackageName);
	// }
	// Set<String> keySet = this.packagesInModule.keySet();
	// for (String string : keySet) {
	// SimpleSet set = this.packagesInModule.get(string);
	// if (set.includes(qualifiedPackageName)) return true;
	// }
	//
	// return false;
	return JRTUtil.isPackage(new File(this.zipFilename), qualifiedPackageName, moduleName);
	}

	public String toString() {
	String start = "Classpath jrt file " + this.zipFilename; //$NON-NLS-1$
	return start;
	}

	public String debugPathString() {
	return this.zipFilename;
	}
	public NameEnvironmentAnswer findClass(char[] typeName, String qualifiedPackageName, String qualifiedBinaryFileName, boolean asBinaryOnly, Optional<Collection<char[]>> moduleNames) {
	String fileName = new String(typeName);
	return findClass(fileName, qualifiedPackageName, qualifiedBinaryFileName, asBinaryOnly, Optional.empty());
	}
	@Override
	public IModule getModule(char[] moduleName) {
	Set<IModule> modules = ModulesCache.get(this.zipFilename);
	if (modules != null) {
	for (IModule mod : modules) {
	if (CharOperation.equals(mod.name(), moduleName))
	return mod;
	}
	}
	return null;
	}
	@Override
	public IMultiModuleTypeLookup typeLookup() {
	return this::findClass;
	}
	@Override
	public IMultiModulePackageLookup packageLookup() {
	return this::isPackage;
	}

	@Override
	public IModuleEnvironment getLookupEnvironment() {
	//
	return this;
	}
	@Override
	public IModuleEnvironment getLookupEnvironmentFor(IModule mod) {
	//
	return new IModuleEnvironment() {

	@Override
	public ITypeLookup typeLookup() {
	//
	return servesModule(mod.name()) ? ClasspathJrt.this.typeLookupForModule.apply(mod.name()) : ITypeLookup.Dummy;
	}

	@Override
	public IPackageLookup packageLookup() {
	//
	return servesModule(mod.name()) ? ClasspathJrt.this.pkgLookupForModule.apply(mod.name()) : IPackageLookup.Dummy;
	}
	};
	}
	@Override
	public NameEnvironmentAnswer findClass(String typeName, String qualifiedPackageName, String qualifiedBinaryFileName) {
	//
	return findClass(typeName, qualifiedPackageName, qualifiedBinaryFileName, false, Optional.empty());
	}
	@Override
	public NameEnvironmentAnswer findClass(String typeName, String qualifiedPackageName, String qualifiedBinaryFileName,
	boolean asBinaryOnly) {
	//
	return findClass(typeName, qualifiedPackageName, qualifiedBinaryFileName, asBinaryOnly, Optional.empty());
	}

	}