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AspectJ tools most notably contains the AspectJ compiler (AJC). AJC applies aspects to Java classes during
compilation, fully replacing Javac for plain Java classes and also compiling native AspectJ or annotation-based
@AspectJ syntax. Furthermore, AJC can weave aspects into existing class files in a post-compile binary weaving step.
This library is a superset of AspectJ weaver and hence also of AspectJ runtime.
/* ====================================================================
* The Apache Software License, Version 1.1
*
* Copyright (c) 2001, 2017 The Apache Software Foundation. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution,
* if any, must include the following acknowledgment:
* "This product includes software developed by the
* Apache Software Foundation (https://www.apache.org/)."
* Alternately, this acknowledgment may appear in the software itself,
* if and wherever such third-party acknowledgments normally appear.
*
* 4. The names "Apache" and "Apache Software Foundation" and
* "Apache BCEL" must not be used to endorse or promote products
* derived from this software without prior written permission. For
* written permission, please contact [email protected].
*
* 5. Products derived from this software may not be called "Apache",
* "Apache BCEL", nor may "Apache" appear in their name, without
* prior written permission of the Apache Software Foundation.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* vec = new ArrayList<>();
for (StringTokenizer tok = new StringTokenizer(class_path, System.getProperty("path.separator")); tok
.hasMoreTokens();) {
String path = tok.nextToken();
if (!path.equals("")) {
File file = new File(path);
try {
if (file.isDirectory()) {
vec.add(new Dir(path));
} else if (file.exists()) {
if (file.getName().endsWith("jrt-fs.jar")) { // TODO a bit crude...
vec.add(new JImage());
} else {
vec.add(new Zip(new ZipFile(file)));
}
}
} catch (IOException e) {
System.err.println("CLASSPATH component " + file + ": " + e);
}
}
}
paths = new PathEntry[vec.size()];
vec.toArray(paths);
}
/**
* Search for classes in CLASSPATH.
*
* @deprecated Use SYSTEM_CLASS_PATH constant
*/
@Deprecated
public ClassPath() {
this(getClassPath());
}
/**
* @return used class path string
*/
@Override
public String toString() {
return class_path;
}
@Override
public int hashCode() {
return class_path.hashCode();
}
@Override
public boolean equals(Object o) {
if (o instanceof ClassPath) {
return class_path.equals(((ClassPath) o).class_path);
}
return false;
}
private static final void getPathComponents(String path, List list) {
if (path != null) {
StringTokenizer tok = new StringTokenizer(path, File.pathSeparator);
while (tok.hasMoreTokens()) {
String name = tok.nextToken();
File file = new File(name);
if (file.exists())
list.add(name);
}
}
}
/**
* Checks for class path components in the following properties:
* "java.class.path", "sun.boot.class.path", "java.ext.dirs"
*
* @return class path as used by default by BCEL
*/
public static final String getClassPath() {
String class_path = System.getProperty("java.class.path");
String boot_path = System.getProperty("sun.boot.class.path");
String ext_path = System.getProperty("java.ext.dirs");
String vm_version = System.getProperty("java.version");
ArrayList list = new ArrayList<>();
getPathComponents(class_path, list);
getPathComponents(boot_path, list);
ArrayList dirs = new ArrayList<>();
getPathComponents(ext_path, dirs);
for (String string : dirs) {
File ext_dir = new File(string);
String[] extensions = ext_dir.list(new FilenameFilter() {
@Override
public boolean accept(File dir, String name) {
name = name.toLowerCase();
return name.endsWith(".zip") || name.endsWith(".jar");
}
});
if (extensions != null)
for (String extension : extensions)
list.add(ext_dir.toString() + File.separatorChar + extension);
}
StringBuilder buf = new StringBuilder();
for (Iterator e = list.iterator(); e.hasNext();) {
buf.append(e.next());
if (e.hasNext())
buf.append(File.pathSeparatorChar);
}
// On Java 9+, sun.boot.class.path won't be set. System classes are accessible through JRT filesystem.
if (vm_version.matches("^(9|[1-9][0-9]+).*")) {
buf.insert(0, File.pathSeparatorChar);
buf.insert(0, System.getProperty("java.home") + File.separator + "lib" + File.separator + JRT_FS);
}
return buf.toString().intern();
}
/**
* @param name
* fully qualified class name, e.g. java.lang.String
* @return input stream for class
*/
public InputStream getInputStream(String name) throws IOException {
return getInputStream(name, ".class");
}
/**
* Return stream for class or resource on CLASSPATH.
*
* @param name
* fully qualified file name, e.g. java/lang/String
* @param suffix
* file name ends with suff, e.g. .java
* @return input stream for file on class path
*/
public InputStream getInputStream(String name, String suffix) throws IOException {
InputStream is = null;
try {
is = getClass().getClassLoader().getResourceAsStream(name + suffix);
} catch (Exception e) {
}
if (is != null)
return is;
return getClassFile(name, suffix).getInputStream();
}
/**
* @param name
* fully qualified file name, e.g. java/lang/String
* @param suffix
* file name ends with suff, e.g. .java
* @return class file for the java class
*/
public ClassFile getClassFile(String name, String suffix) throws IOException {
for (PathEntry path : paths) {
ClassFile cf;
if ((cf = path.getClassFile(name, suffix)) != null)
return cf;
}
throw new IOException("Couldn't find: " + name + suffix);
}
/**
* @param name
* fully qualified class name, e.g. java.lang.String
* @return input stream for class
*/
public ClassFile getClassFile(String name) throws IOException {
return getClassFile(name, ".class");
}
/**
* @param name
* fully qualified file name, e.g. java/lang/String
* @param suffix
* file name ends with suffix, e.g. .java
* @return byte array for file on class path
*/
public byte[] getBytes(String name, String suffix) throws IOException {
InputStream is = getInputStream(name, suffix);
if (is == null)
throw new IOException("Couldn't find: " + name + suffix);
DataInputStream dis = new DataInputStream(is);
byte[] bytes = new byte[is.available()];
dis.readFully(bytes);
dis.close();
is.close();
return bytes;
}
/**
* @return byte array for class
*/
public byte[] getBytes(String name) throws IOException {
return getBytes(name, ".class");
}
/**
* @param name
* name of file to search for, e.g. java/lang/String.java
* @return full (canonical) path for file
*/
public String getPath(String name) throws IOException {
int index = name.lastIndexOf('.');
String suffix = "";
if (index > 0) {
suffix = name.substring(index);
name = name.substring(0, index);
}
return getPath(name, suffix);
}
/**
* @param name
* name of file to search for, e.g. java/lang/String
* @param suffix
* file name suffix, e.g. .java
* @return full (canonical) path for file, if it exists
*/
public String getPath(String name, String suffix) throws IOException {
return getClassFile(name, suffix).getPath();
}
private static abstract class PathEntry implements Serializable {
abstract ClassFile getClassFile(String name, String suffix) throws IOException;
}
/**
* Contains information about file/ZIP entry of the Java class.
*/
public interface ClassFile {
/**
* @return input stream for class file.
*/
InputStream getInputStream() throws IOException;
/**
* @return canonical path to class file.
*/
String getPath();
/**
* @return base path of found class, i.e. class is contained relative to
* that path, which may either denote a directory, or zip file
*/
String getBase();
/**
* @return modification time of class file.
*/
long getTime();
/**
* @return size of class file.
*/
long getSize();
}
private static class Dir extends PathEntry {
private String dir;
Dir(String d) {
dir = d;
}
@Override
ClassFile getClassFile(String name, String suffix) throws IOException {
final File file = new File(dir + File.separatorChar + name.replace('.', File.separatorChar) + suffix);
return file.exists() ? new ClassFile() {
@Override
public InputStream getInputStream() throws IOException {
return new FileInputStream(file);
}
@Override
public String getPath() {
try {
return file.getCanonicalPath();
} catch (IOException e) {
return null;
}
}
@Override
public long getTime() {
return file.lastModified();
}
@Override
public long getSize() {
return file.length();
}
@Override
public String getBase() {
return dir;
}
} : null;
}
@Override
public String toString() {
return dir;
}
}
private static class JImage extends PathEntry {
private static URI JRT_URI = URI.create("jrt:/"); //$NON-NLS-1$
private static String MODULES_PATH = "modules"; //$NON-NLS-1$
private static String JAVA_BASE_PATH = "java.base"; //$NON-NLS-1$
private java.nio.file.FileSystem fs;
private final Map fileMap;
JImage() {
fs = FileSystems.getFileSystem(JRT_URI);
fileMap = buildFileMap();
}
private Map buildFileMap() {
final Map fileMap = new HashMap<>();
final java.nio.file.PathMatcher matcher = fs.getPathMatcher("glob:*.class");
Iterable roots = fs.getRootDirectories();
for (java.nio.file.Path path : roots) {
try {
Files.walkFileTree(path, new SimpleFileVisitor() {
@Override
public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) throws IOException {
if (file.getNameCount() > 2
&& matcher.matches(file.getFileName())) {
Path classPath = file.subpath(2, file.getNameCount());
fileMap.put(classPath.toString(), file);
}
return FileVisitResult.CONTINUE;
}
});
}
catch (IOException e) {
throw new RuntimeException(e);
}
}
return fileMap;
}
private static class ByteBasedClassFile implements ClassFile {
private byte[] bytes;
private ByteArrayInputStream bais;
private String path;
private String base;
private long time;
private long size;
public ByteBasedClassFile(byte[] bytes, String path, String base, long time, long size) {
this.bytes = bytes;
this.path = path;
this.base = base;
this.time = time;
this.size = size;
}
@Override
public InputStream getInputStream() throws IOException {
// TODO too costly to keep these in inflated form in memory?
this.bais = new ByteArrayInputStream(bytes);
return this.bais;
}
@Override
public String getPath() {
return this.path;
}
@Override
public String getBase() {
return this.base;
}
@Override
public long getTime() {
return this.time;
}
@Override
public long getSize() {
return this.size;
}
}
@Override
ClassFile getClassFile(String name, String suffix) throws IOException {
// Class files are in here under names like this:
// /modules/java.base/java/lang/Object.class (jdk9 b74)
// so within a modules top level qualifier and then the java.base module
String fileName = name.replace('.', '/') + suffix;
Path p = fileMap.get(fileName);
if (p == null) {
return null;
}
byte[] bs = Files.readAllBytes(p);
BasicFileAttributeView bfav = Files.getFileAttributeView(p, BasicFileAttributeView.class);
BasicFileAttributes bfas = bfav.readAttributes();
long time = bfas.lastModifiedTime().toMillis();
long size = bfas.size();
ClassFile cf = new ByteBasedClassFile(bs, "jimage",fileName,time,size);
return cf;
}
}
private static class Zip extends PathEntry {
private ZipFile zip;
Zip(ZipFile z) {
zip = z;
}
@Override
ClassFile getClassFile(String name, String suffix) throws IOException {
final ZipEntry entry = zip.getEntry(name.replace('.', '/') + suffix);
return (entry != null) ? new ClassFile() {
@Override
public InputStream getInputStream() throws IOException {
return zip.getInputStream(entry);
}
@Override
public String getPath() {
return entry.toString();
}
@Override
public long getTime() {
return entry.getTime();
}
@Override
public long getSize() {
return entry.getSize();
}
@Override
public String getBase() {
return zip.getName();
}
} : null;
}
}
}