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Eclipse Compiler for Java(TM)
/*******************************************************************************
* Copyright (c) 2018, 2019 IBM Corporation.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v2.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v20.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.jdt.internal.compiler.batch;
import java.io.File;
import java.io.IOException;
import java.net.URI;
import java.nio.file.DirectoryStream;
import java.nio.file.FileSystemNotFoundException;
import java.nio.file.FileSystems;
import java.nio.file.FileVisitResult;
import java.nio.file.FileVisitor;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.attribute.BasicFileAttributes;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
import org.eclipse.jdt.core.compiler.CharOperation;
import org.eclipse.jdt.internal.compiler.batch.FileSystem.Classpath;
import org.eclipse.jdt.internal.compiler.classfmt.ClassFileConstants;
import org.eclipse.jdt.internal.compiler.classfmt.ClassFileReader;
import org.eclipse.jdt.internal.compiler.classfmt.ClassFormatException;
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.util.JRTUtil;
import org.eclipse.jdt.internal.compiler.util.Util;
public class ClasspathJep247 extends ClasspathJrt {
protected java.nio.file.FileSystem fs = null;
protected String compliance = null;
protected long jdklevel;
protected String releaseInHex = null;
protected String[] subReleases = null;
protected Path releasePath = null;
protected Set packageCache;
protected File jdkHome;
protected String modulePath = null;
public ClasspathJep247(File jdkHome, String release, AccessRuleSet accessRuleSet) {
super(jdkHome, false, accessRuleSet, null);
this.compliance = release;
this.jdklevel = CompilerOptions.releaseToJDKLevel(this.compliance);
this.jdkHome = jdkHome;
this.file = new File(new File(jdkHome, "lib"), "jrt-fs.jar"); //$NON-NLS-1$ //$NON-NLS-2$
}
@Override
public List fetchLinkedJars(FileSystem.ClasspathSectionProblemReporter problemReporter) {
return null;
}
@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 (!isPackage(qualifiedPackageName, moduleName))
return null; // most common case
try {
//TODO: Check if any conversion needed for path separator
ClassFileReader reader = null;
byte[] content = null;
qualifiedBinaryFileName = qualifiedBinaryFileName.replace(".class", ".sig"); //$NON-NLS-1$ //$NON-NLS-2$
if (this.subReleases != null && this.subReleases.length > 0) {
for (String rel : this.subReleases) {
Path p = this.fs.getPath(rel, qualifiedBinaryFileName);
if (Files.exists(p)) {
content = JRTUtil.safeReadBytes(p);
if (content != null)
break;
}
}
} else {
content = JRTUtil.safeReadBytes(this.fs.getPath(this.releaseInHex, qualifiedBinaryFileName));
}
if (content != null) {
reader = new ClassFileReader(content, qualifiedBinaryFileName.toCharArray());
char[] modName = moduleName != null ? moduleName.toCharArray() : null;
return new NameEnvironmentAnswer(reader, fetchAccessRestriction(qualifiedBinaryFileName), modName);
}
} catch (ClassFormatException | IOException e) {
// continue
}
return null;
}
@Override
public void initialize() throws IOException {
if (this.compliance == null) {
return;
}
this.releaseInHex = Integer.toHexString(Integer.parseInt(this.compliance)).toUpperCase();
Path filePath = this.jdkHome.toPath().resolve("lib").resolve("ct.sym"); //$NON-NLS-1$ //$NON-NLS-2$
URI t = filePath.toUri();
if (!Files.exists(filePath)) {
return;
}
URI uri = URI.create("jar:file:" + t.getRawPath()); //$NON-NLS-1$
try {
this.fs = FileSystems.getFileSystem(uri);
} catch(FileSystemNotFoundException fne) {
// Ignore and move on
}
if (this.fs == null) {
HashMap env = new HashMap<>();
this.fs = FileSystems.newFileSystem(uri, env);
}
this.releasePath = this.fs.getPath("/"); //$NON-NLS-1$
if (!Files.exists(this.fs.getPath(this.releaseInHex))) {
throw new IllegalArgumentException("release " + this.compliance + " is not found in the system"); //$NON-NLS-1$//$NON-NLS-2$
}
super.initialize();
}
@Override
public void loadModules() {
// Modules below level 8 are not dealt with here. Leave it to ClasspathJrt
if (this.jdklevel <= ClassFileConstants.JDK1_8) {
super.loadModules();
return;
}
final Path modPath = this.fs.getPath(this.releaseInHex + "-modules"); //$NON-NLS-1$
if (!Files.exists(modPath)) {
throw new IllegalArgumentException("release " + this.compliance + " is not found in the system"); //$NON-NLS-1$//$NON-NLS-2$
}
this.modulePath = this.file.getPath() + "|" + modPath.toString(); //$NON-NLS-1$
Map cache = ModulesCache.get(this.modulePath);
if (cache == null) {
try (DirectoryStream stream = Files.newDirectoryStream(modPath)) {
HashMap newCache = new HashMap<>();
for (final java.nio.file.Path subdir: stream) {
Files.walkFileTree(subdir, new FileVisitor() {
@Override
public FileVisitResult preVisitDirectory(java.nio.file.Path dir, BasicFileAttributes attrs)
throws IOException {
return FileVisitResult.CONTINUE;
}
@Override
public FileVisitResult visitFile(java.nio.file.Path f, BasicFileAttributes attrs) throws IOException {
byte[] content = null;
if (Files.exists(f)) {
content = JRTUtil.safeReadBytes(f);
if (content == null)
return FileVisitResult.CONTINUE;
ClasspathJep247.this.acceptModule(content, newCache);
ClasspathJep247.this.moduleNamesCache.add(JRTUtil.sanitizedFileName(f));
}
return FileVisitResult.CONTINUE;
}
@Override
public FileVisitResult visitFileFailed(java.nio.file.Path f, IOException exc) throws IOException {
return FileVisitResult.CONTINUE;
}
@Override
public FileVisitResult postVisitDirectory(java.nio.file.Path dir, IOException exc) throws IOException {
return FileVisitResult.CONTINUE;
}
});
}
synchronized(ModulesCache) {
if (ModulesCache.get(this.modulePath) == null) {
ModulesCache.put(this.modulePath, Collections.unmodifiableMap(newCache));
}
}
} catch (IOException e) {
e.printStackTrace();
}
} else {
this.moduleNamesCache.addAll(cache.keySet());
}
}
@Override
void acceptModule(ClassFileReader reader, Map cache) {
// Modules below level 8 are not dealt with here. Leave it to ClasspathJrt
if (this.jdklevel <= ClassFileConstants.JDK1_8) {
super.acceptModule(reader, cache);
return;
}
if (reader != null) {
IModule moduleDecl = reader.getModuleDeclaration();
if (moduleDecl != null) {
cache.put(String.valueOf(moduleDecl.name()), moduleDecl);
}
}
}
protected void addToPackageCache(String packageName, boolean endsWithSep) {
if (this.packageCache.contains(packageName))
return;
this.packageCache.add(packageName);
}
@Override
public synchronized char[][] getModulesDeclaringPackage(String qualifiedPackageName, String moduleName) {
// Ignore moduleName as this has nothing to do with modules (as of now)
if (this.packageCache != null)
return singletonModuleNameIf(this.packageCache.contains(qualifiedPackageName));
this.packageCache = new HashSet<>(41);
this.packageCache.add(Util.EMPTY_STRING);
List sub = new ArrayList<>();
try (DirectoryStream stream = Files.newDirectoryStream(this.releasePath)) {
for (final java.nio.file.Path subdir: stream) {
String rel = JRTUtil.sanitizedFileName(subdir);
if (rel.contains(this.releaseInHex)) {
sub.add(rel);
} else {
continue;
}
Files.walkFileTree(subdir, new FileVisitor() {
@Override
public FileVisitResult preVisitDirectory(java.nio.file.Path dir, BasicFileAttributes attrs) throws IOException {
if (dir.getNameCount() <= 1)
return FileVisitResult.CONTINUE;
Path relative = dir.subpath(1, dir.getNameCount());
addToPackageCache(relative.toString(), false);
return FileVisitResult.CONTINUE;
}
@Override
public FileVisitResult visitFile(java.nio.file.Path f, BasicFileAttributes attrs) throws IOException {
return FileVisitResult.CONTINUE;
}
@Override
public FileVisitResult visitFileFailed(java.nio.file.Path f, IOException exc) throws IOException {
return FileVisitResult.CONTINUE;
}
@Override
public FileVisitResult postVisitDirectory(java.nio.file.Path dir, IOException exc) throws IOException {
return FileVisitResult.CONTINUE;
}
});
}
} catch (IOException e) {
e.printStackTrace();
// Rethrow
}
this.subReleases = sub.toArray(new String[sub.size()]);
return singletonModuleNameIf(this.packageCache.contains(qualifiedPackageName));
}
@Override
public void reset() {
try {
super.reset();
this.fs.close();
} catch (IOException e) {
// Move on
}
}
@Override
public String toString() {
return "Classpath for JEP 247 for JDK " + this.file.getPath(); //$NON-NLS-1$
}
@Override
public char[] normalizedPath() {
if (this.normalizedPath == null) {
String path2 = this.getPath();
char[] rawName = path2.toCharArray();
if (File.separatorChar == '\\') {
CharOperation.replace(rawName, '\\', '/');
}
this.normalizedPath = CharOperation.subarray(rawName, 0, CharOperation.lastIndexOf('.', rawName));
}
return this.normalizedPath;
}
@Override
public String getPath() {
if (this.path == null) {
try {
this.path = this.file.getCanonicalPath();
} catch (IOException e) {
// in case of error, simply return the absolute path
this.path = this.file.getAbsolutePath();
}
}
return this.path;
}
@Override
public int getMode() {
return BINARY;
}
}