static void optimize(final File f, final File d, final Remapper remapper) throws IOException {
if (f.isDirectory()) {
File[] files = f.listFiles();
for (int i = 0; i < files.length; ++i) {
optimize(files[i], d, remapper);
}
} else if (f.getName().endsWith(".class")) {
ConstantPool cp = new ConstantPool();
ClassReader cr = new ClassReader(new FileInputStream(f));
// auto-boxing removal requires to recompute the maxs
ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_MAXS);
ClassConstantsCollector ccc = new ClassConstantsCollector(cw, cp);
ClassOptimizer co = new ClassOptimizer(ccc, remapper);
cr.accept(co, ClassReader.SKIP_DEBUG);
Set<Constant> constants = new TreeSet<Constant>(new ConstantComparator());
constants.addAll(cp.values());
cr = new ClassReader(cw.toByteArray());
cw = new ClassWriter(0);
Iterator<Constant> i = constants.iterator();
while (i.hasNext()) {
Constant c = i.next();
c.write(cw);
}
cr.accept(cw, ClassReader.SKIP_DEBUG);
if (MAPPING.get(cr.getClassName() + "/remove") != null) {
return;
}
String n = remapper.mapType(cr.getClassName());
File g = new File(d, n + ".class");
if (!g.exists() || g.lastModified() < f.lastModified()) {
if (!g.getParentFile().exists() && !g.getParentFile().mkdirs()) {
throw new IOException("Cannot create directory " + g.getParentFile());
}
OutputStream os = new FileOutputStream(g);
try {
os.write(cw.toByteArray());
} finally {
os.close();
}
}
}
}
public static ClassMetadata scan(ClassReader source) {
ClassMetadata info = new ClassMetadata();
source.accept(new MetaScanner(info), 0);
info.type = Type.getObjectType(source.getClassName());
for (FieldDescriptor fd : info.fields) {
if ((fd.access & ACC_PUBLIC) == ACC_PUBLIC) {
info.directFieldAccess = true;
}
}
return info;
}
/**
* Runs ASM on the provider byteCode, chaining a reader to a writer and using the {@code
* ClassVisitor} you yourself provide via the {@see #createClassVisitor(ClassWriter)} method as
* the filter.
*/
protected byte[] runASM(
byte[] byteCode, boolean computeStacks, TransplantMapper transplantMapper) {
ClassReader reader = new ClassReader(byteCode);
int classFileFormatVersion = 48;
if (byteCode.length > 7) classFileFormatVersion = byteCode[7] & 0xFF;
int flags = classFileFormatVersion < 50 ? ClassWriter.COMPUTE_FRAMES : 0;
if (computeStacks) flags |= ClassWriter.COMPUTE_MAXS;
ClassWriter writer = new FixedClassWriter(reader, flags);
ClassVisitor visitor = createClassVisitor(writer, reader.getClassName(), transplantMapper);
reader.accept(visitor, 0);
return writer.toByteArray();
}
private static Class loadCompiledScriptFromClass(Ruby runtime, InputStream in)
throws IOException {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
byte[] buf = new byte[8192];
int read;
while ((read = in.read(buf)) != -1) {
baos.write(buf, 0, read);
}
buf = baos.toByteArray();
JRubyClassLoader jcl = runtime.getJRubyClassLoader();
OneShotClassLoader oscl = new OneShotClassLoader(jcl);
ClassReader cr = new ClassReader(buf);
String className = cr.getClassName().replace('/', '.');
return oscl.defineClass(className, buf);
}
public static void parse(File sourceFile) throws Exception {
if (ByteCodeTranslator.verbose) {
System.out.println("Parsing: " + sourceFile.getAbsolutePath());
}
ClassReader r = new ClassReader(new FileInputStream(sourceFile));
/*if(ByteCodeTranslator.verbose) {
System.out.println("Class: " + r.getClassName() + " derives from: " + r.getSuperName() + " interfaces: " + Arrays.asList(r.getInterfaces()));
}*/
Parser p = new Parser();
p.clsName = r.getClassName().replace('/', '_').replace('$', '_');
if (p.clsName.startsWith("java_lang_annotation")
|| p.clsName.startsWith("java_lang_Deprecated")
|| p.clsName.startsWith("java_lang_Override")
|| p.clsName.startsWith("java_lang_SuppressWarnings")) {
return;
}
p.cls = new ByteCodeClass(p.clsName);
r.accept(p, ClassReader.EXPAND_FRAMES);
classes.add(p.cls);
}
public static String getClassName(Resource res) throws IOException {
byte[] src = IOUtil.toBytes(res);
ClassReader cr = new ClassReader(src);
return cr.getClassName();
}