/**
* Implementation of {@link ClassLoader#findClass(String)}.
*
* @throws ClassNotFoundException
*/
public Class<?> findClass(String className) throws ClassNotFoundException {
byte[] ba;
int size;
try {
// Maybe the bytecode is already there, because the class was
// compiled as a side effect of a preceding
// compilation.
JavaFileObject classFileObject =
this.getJavaFileManager()
.getJavaFileForInput(StandardLocation.CLASS_OUTPUT, className, Kind.CLASS);
if (classFileObject == null) {
// Get the sourceFile.
JavaFileObject sourceFileObject =
this.getJavaFileManager()
.getJavaFileForInput(StandardLocation.SOURCE_PATH, className, Kind.SOURCE);
if (sourceFileObject == null) {
throw new DiagnosticException("Source for '" + className + "' not found");
}
// Compose the effective compiler options.
Vector<String> optionList = new Vector<String>();
IPreferenceStore store = Bio7EditorPlugin.getDefault().getPreferenceStore();
String version = store.getString("compiler_version");
boolean debug = store.getBoolean("compiler_debug");
boolean verbose = store.getBoolean("compiler_verbose");
boolean warnings = store.getBoolean("compiler_warnings");
boolean createMarker = store.getBoolean("compiler_marker");
optionList.addElement("-source");
optionList.addElement(version);
optionList.addElement("-target");
optionList.addElement(version);
optionList.addElement("-classpath");
/* Add the Bio7 libs etc. for the compiler! */
optionList.addElement(new ScanClassPath().scan());
if (debug) {
optionList.addElement("-g");
} else {
optionList.addElement("-g:none");
}
if (verbose) {
optionList.addElement("-verbose");
}
if (warnings == false) {
optionList.addElement("-nowarn");
}
DiagnosticCollector<JavaFileObject> diagnosticsCollector =
new DiagnosticCollector<JavaFileObject>();
// Run the compiler.
boolean success =
this.compiler
.getTask(
null, // out
this.getJavaFileManager(), // fileManager
diagnosticsCollector,
optionList, // options
null, // classes
Collections.singleton(sourceFileObject) // compilationUnits
)
.call();
if (!success) {
markError(diagnosticsCollector, createMarker);
throw new ClassNotFoundException(className + ": Compilation failed");
}
classFileObject =
this.getJavaFileManager()
.getJavaFileForInput(StandardLocation.CLASS_OUTPUT, className, Kind.CLASS);
if (classFileObject == null) {
throw new ClassNotFoundException(className + ": Class file not created by compilation");
}
}
if (classFileObject instanceof ByteArrayJavaFileObject) {
ByteArrayJavaFileObject bajfo = (ByteArrayJavaFileObject) classFileObject;
ba = bajfo.toByteArray();
size = ba.length;
} else {
ba = new byte[4096];
size = 0;
InputStream is = classFileObject.openInputStream();
try {
for (; ; ) {
int res = is.read(ba, size, ba.length - size);
if (res == -1) break;
size += res;
if (size == ba.length) {
byte[] tmp = new byte[2 * size];
System.arraycopy(ba, 0, tmp, 0, size);
ba = tmp;
}
}
} finally {
is.close();
}
}
} catch (IOException ioe) {
throw new DiagnosticException(ioe);
}
return this.defineClass(
className,
ba,
0,
size,
(this.optionalProtectionDomainFactory == null
? null
: this.optionalProtectionDomainFactory.getProtectionDomain(
getSourceResourceName(className))));
}
/**
* Save a compiled class and associated classes to a jar file.
*
* <p>With a packageName = "" and recursive = false, it will save clazz and any classes compiled
* from the same source (I think); this is probably what you want.
*
* @param packageName package name prefix to search for classes, or "" for all
* @param clazz a class that has been previously compiled by this bridge
* @param mainClazz a class that will be installed as the "Main-Class" of a runnable jar
* @param outStream output stream
* @param recursive whether to retrieve classes from rest of the the JavaFileManager hierarchy
* @throws FileNotFoundException
* @throws IOException
*/
public void saveToJar(
String packageName,
Class<?> clazz,
Class<?> mainClazz,
OutputStream outStream,
boolean recursive)
throws IOException {
JavaFileManager manager = fileManagerCache.get(clazz);
List<JavaFileObject> list = new ArrayList<JavaFileObject>();
for (JavaFileObject obj :
manager.list(
StandardLocation.CLASS_PATH,
packageName,
Collections.singleton(JavaFileObject.Kind.CLASS),
false)) list.add(obj);
if (list.iterator().hasNext()) {
Manifest manifest = new Manifest();
manifest.getMainAttributes().put(Attributes.Name.MANIFEST_VERSION, "1.0");
if (mainClazz != null) {
manifest.getMainAttributes().put(Attributes.Name.MAIN_CLASS, mainClazz.getName());
}
manifest
.getMainAttributes()
.put(new Attributes.Name("X-Rascal-Saved-Class"), clazz.getName());
JarOutputStream target = new JarOutputStream(outStream, manifest);
JarEntry entry = new JarEntry("META-INF/");
target.putNextEntry(entry);
Collection<String> dirs = new ArrayList<String>();
for (JavaFileObject o : list) {
String path = o.toUri().getPath().replace(".", "/");
makeJarDirs(target, dirs, path);
entry = new JarEntry(path + ".class");
entry.setTime(o.getLastModified());
target.putNextEntry(entry);
try (InputStream stream = o.openInputStream()) {
byte[] buffer = new byte[8192];
int c = stream.read(buffer);
while (c > -1) {
target.write(buffer, 0, c);
c = stream.read(buffer);
}
}
target.closeEntry();
}
if (mainClazz != null) {
String name = mainClazz.getName();
String path = name.replace(".", "/") + ".class";
String dir = path.substring(0, path.lastIndexOf('/'));
StringBuilder dirTmp = new StringBuilder(dir.length());
for (String d : dir.split("/")) {
dirTmp.append(d);
dirTmp.append("/");
String tmp = dirTmp.toString();
if (!dirs.contains(tmp)) {
dirs.add(tmp);
entry = new JarEntry(tmp);
target.putNextEntry(entry);
}
}
entry = new JarEntry(path);
target.putNextEntry(entry);
try (InputStream stream = mainClazz.getClassLoader().getResourceAsStream(path)) {
byte[] buffer = new byte[8192];
int c = stream.read(buffer);
while (c > -1) {
target.write(buffer, 0, c);
c = stream.read(buffer);
}
}
target.closeEntry();
}
target.close();
}
}