/** @return Resolved string representation */
public final String toString(ConstantPool constant_pool) {
String inner_class_name, outer_class_name, inner_name, access;
inner_class_name = constant_pool.getConstantString(inner_class_index, Constants.CONSTANT_Class);
inner_class_name = Utility.compactClassName(inner_class_name);
if (outer_class_index != 0) {
outer_class_name =
constant_pool.getConstantString(outer_class_index, Constants.CONSTANT_Class);
outer_class_name = Utility.compactClassName(outer_class_name);
} else {
outer_class_name = "<not a member>";
}
if (inner_name_index != 0) {
inner_name =
((ConstantUtf8) constant_pool.getConstant(inner_name_index, Constants.CONSTANT_Utf8))
.getBytes();
} else {
inner_name = "<anonymous>";
}
access = Utility.accessToString(inner_access_flags, true);
access = access.equals("") ? "" : (access + " ");
return "InnerClass:"
+ access
+ inner_class_name
+ "(\""
+ outer_class_name
+ "\", \""
+ inner_name
+ "\")";
}
/**
* Override this method to create you own classes on the fly. The name contains the special token
* $$BCEL$$. Everything before that token is consddered to be a package name. You can encode you
* own arguments into the subsequent string. You must regard however not to use any "illegal"
* characters, i.e., characters that may not appear in a Java class name too<br>
* The default implementation interprets the string as a encoded compressed Java class, unpacks
* and decodes it with the Utility.decode() method, and parses the resulting byte array and
* returns the resulting JavaClass object.
*
* @param class_name compressed byte code with "$$BCEL$$" in it
*/
protected JavaClass createClass(String class_name) {
int index = class_name.indexOf("$$BCEL$$");
String real_name = class_name.substring(index + 8);
JavaClass clazz = null;
try {
byte[] bytes = Utility.decode(real_name, true);
ClassParser parser = new ClassParser(new ByteArrayInputStream(bytes), "foo");
clazz = parser.parse();
} catch (Throwable e) {
e.printStackTrace();
return null;
}
// Adapt the class name to the passed value
ConstantPool cp = clazz.getConstantPool();
ConstantClass cl =
(ConstantClass) cp.getConstant(clazz.getClassNameIndex(), Constants.CONSTANT_Class);
ConstantUtf8 name = (ConstantUtf8) cp.getConstant(cl.getNameIndex(), Constants.CONSTANT_Utf8);
name.setBytes(class_name.replace('.', '/'));
return clazz;
}
public void visitConstantPool(ConstantPool cp) {
cp.accept(visitor);
Constant[] constants = cp.getConstantPool();
for (int i = 1; i < constants.length; i++) {
if (constants[i] != null) constants[i].accept(this);
}
}
public void visitOuterClass(final String owner, final String name, final String desc) {
cp.newUTF8("EnclosingMethod");
cp.newClass(owner);
if (name != null && desc != null) {
cp.newNameType(name, desc);
}
cv.visitOuterClass(owner, name, desc);
}
@Override
public void visitParameter(String name, int access) {
cp.newUTF8("MethodParameters");
if (name != null) {
cp.newUTF8(name);
}
mv.visitParameter(name, access);
}
public AnnotationVisitor visitAnnotation(final String desc, final boolean visible) {
cp.newUTF8(desc);
if (visible) {
cp.newUTF8("RuntimeVisibleAnnotations");
} else {
cp.newUTF8("RuntimeInvisibleAnnotations");
}
return new AnnotationConstantsCollector(cv.visitAnnotation(desc, visible), cp);
}
private int getOrInsertMethodRef(int classIndex, int nameAndTypeIndex) throws IOException {
int methodRef = constantPool.lookForRef(classIndex, nameAndTypeIndex);
if (methodRef == -1) {
methodRef = constantPool.poolSize() + 1;
MethodRefConstant methodRefConstant = new MethodRefConstant(classIndex, nameAndTypeIndex);
constantPool.add(methodRefConstant);
methodRefConstant.serializeToStream(constantStream);
}
return methodRef;
}
private int getOrInsertUtf8(String string) throws IOException {
int nameIndex = constantPool.lookForUtf8Reference(string);
if (nameIndex == -1) {
nameIndex = constantPool.poolSize() + 1;
Utf8Constant name = new Utf8Constant(string);
constantPool.add(name);
name.serializeToStream(constantStream);
}
return nameIndex;
}
public void visitSource(final String source, final String debug) {
if (source != null) {
cp.newUTF8("SourceFile");
cp.newUTF8(source);
}
if (debug != null) {
cp.newUTF8("SourceDebugExtension");
}
cv.visitSource(source, debug);
}
private int getOrInsertString(int utf8Index) throws IOException {
int stringIndex = constantPool.lookForString(utf8Index);
if (stringIndex == -1) {
stringIndex = constantPool.poolSize() + 1;
StringConstant stringConstant = new StringConstant(utf8Index);
constantPool.add(stringConstant);
stringConstant.serializeToStream(constantStream);
}
return stringIndex;
}
private int getOrInsertNameAndType(int nameIndex, int typeIndex) throws IOException {
int nameAndTypeIndex = constantPool.lookForNameAndTypeReference(nameIndex, typeIndex);
if (nameAndTypeIndex == -1) {
nameAndTypeIndex = constantPool.poolSize() + 1;
NameAndTypeConstant nameAndType = new NameAndTypeConstant(nameIndex, typeIndex);
constantPool.add(nameAndType);
nameAndType.serializeToStream(constantStream);
}
return nameAndTypeIndex;
}
private int getOrInsertClass(int nameIndex) throws IOException {
int classIndex = constantPool.lookForClass(nameIndex);
if (classIndex == -1) {
classIndex = constantPool.poolSize() + 1;
ClassConstant classConstant = new ClassConstant(nameIndex);
constantPool.add(classConstant);
classConstant.serializeToStream(constantStream);
}
return classIndex;
}
@Override
public AnnotationVisitor visitTypeAnnotation(
int typeRef, TypePath typePath, String desc, boolean visible) {
cp.newUTF8(desc);
if (visible) {
cp.newUTF8("RuntimeVisibleTypeAnnotations");
} else {
cp.newUTF8("RuntimeInvisibleTypeAnnotations");
}
return new AnnotationConstantsCollector(mv.visitAnnotation(desc, visible), cp);
}
public AnnotationVisitor visitParameterAnnotation(
final int parameter, final String desc, final boolean visible) {
cp.newUTF8(desc);
if (visible) {
cp.newUTF8("RuntimeVisibleParameterAnnotations");
} else {
cp.newUTF8("RuntimeInvisibleParameterAnnotations");
}
return new AnnotationConstantsCollector(
mv.visitParameterAnnotation(parameter, desc, visible), cp);
}
public void visitInnerClass(
final String name, final String outerName, final String innerName, final int access) {
cp.newUTF8("InnerClasses");
if (name != null) {
cp.newClass(name);
}
if (outerName != null) {
cp.newClass(outerName);
}
if (innerName != null) {
cp.newUTF8(innerName);
}
cv.visitInnerClass(name, outerName, innerName, access);
}
public void visitTryCatchBlock(
final Label start, final Label end, final Label handler, final String type) {
if (type != null) {
cp.newClass(type);
}
mv.visitTryCatchBlock(start, end, handler, type);
}
ConstantHTML(
String dir,
String class_name,
String class_package,
Method[] methods,
ConstantPool constant_pool)
throws IOException {
this.class_name = class_name;
this.class_package = class_package;
this.constant_pool = constant_pool;
this.methods = methods;
constants = constant_pool.getConstantPool();
file = new PrintWriter(new FileOutputStream(dir + class_name + "_cp.html"));
constant_ref = new String[constants.length];
constant_ref[0] = "<unknown>";
file.println("<HTML><BODY BGCOLOR=\"#C0C0C0\"><TABLE BORDER=0>");
// Loop through constants, constants[0] is reserved
for (int i = 1; i < constants.length; i++) {
if (i % 2 == 0) file.print("<TR BGCOLOR=\"#C0C0C0\"><TD>");
else file.print("<TR BGCOLOR=\"#A0A0A0\"><TD>");
if (constants[i] != null) writeConstant(i);
file.print("</TD></TR>\n");
}
file.println("</TABLE></BODY></HTML>");
file.close();
}
/**
* Resolve this constant pool entry with respect to its dependents in the constant pool.
*
* @param constantPool the constant pool of which this entry is a member and against which this
* entry is to be resolved.
*/
@Override
public void resolve(final ConstantPool constantPool) {
final Utf8CPInfo methodClass = (Utf8CPInfo) constantPool.getEntry(methodDescriptorIndex);
methodClass.resolve(constantPool);
methodDescriptor = methodClass.getValue();
super.resolve(constantPool);
}
/**
* Create a non-standard attribute.
*
* @param name_index Index in constant pool
* @param length Content length in bytes
* @param bytes Attribute contents
* @param constant_pool Array of constants
*/
public Unknown(int name_index, int length, byte[] bytes, ConstantPool constant_pool) {
super(Constants.ATTR_UNKNOWN, name_index, length, constant_pool);
this.bytes = bytes;
name =
((ConstantUtf8) constant_pool.getConstant(name_index, Constants.CONSTANT_Utf8)).getBytes();
unknown_attributes.put(name, this);
}
private MethodInfo readMethod() throws IOException {
MethodInfo methodInfo = new MethodInfo();
methodInfo.setAccessFlags(is.readUnsignedShort());
methodInfo.setNameIndex(is.readUnsignedShort());
methodInfo.setDescriptorIndex(is.readUnsignedShort());
int attributesCount = is.readUnsignedShort();
methodInfo.setAttributes(new AbstractAttribute[attributesCount]);
for (int i = 0; i < attributesCount; i++) {
AbstractAttribute attribute = attributeFacility.readAttribute();
if (isInterceptorAnnotation(attribute)) {
methodInfo.setInterceptorClass(
((RuntimeInvisibleAnnotations) attribute).getInterceptorClass());
}
methodInfo.getAttributes()[i] = attribute;
if (attribute.getClass() == Code.class) {
methodInfo.setCode((Code) attribute);
}
}
methodInfo.setSignature(getMethodSignature(methodInfo));
methodInfo.setMethodName(constantPool.getUtf8(methodInfo.getNameIndex()).getString());
return methodInfo;
}
@Override
public void visitMethodInsn(
final int opcode, final String owner, final String name, final String desc) {
boolean itf = opcode == Opcodes.INVOKEINTERFACE;
cp.newMethod(owner, name, desc, itf);
mv.visitMethodInsn(opcode, owner, name, desc);
}
/** Parses an {@code InnerClasses} attribute. */
private Attribute innerClasses(
DirectClassFile cf, int offset, int length, ParseObserver observer) {
if (length < 2) {
return throwSeverelyTruncated();
}
ByteArray bytes = cf.getBytes();
ConstantPool pool = cf.getConstantPool();
int count = bytes.getUnsignedShort(offset); // number_of_classes
if (observer != null) {
observer.parsed(bytes, offset, 2, "number_of_classes: " + Hex.u2(count));
}
offset += 2;
length -= 2;
if (length != (count * 8)) {
throwBadLength((count * 8) + 2);
}
InnerClassList list = new InnerClassList(count);
for (int i = 0; i < count; i++) {
int innerClassIdx = bytes.getUnsignedShort(offset);
int outerClassIdx = bytes.getUnsignedShort(offset + 2);
int nameIdx = bytes.getUnsignedShort(offset + 4);
int accessFlags = bytes.getUnsignedShort(offset + 6);
CstType innerClass = (CstType) pool.get(innerClassIdx);
CstType outerClass = (CstType) pool.get0Ok(outerClassIdx);
CstString name = (CstString) pool.get0Ok(nameIdx);
list.set(i, innerClass, outerClass, name, accessFlags);
if (observer != null) {
observer.parsed(
bytes, offset, 2, "inner_class: " + DirectClassFile.stringOrNone(innerClass));
observer.parsed(
bytes, offset + 2, 2, " outer_class: " + DirectClassFile.stringOrNone(outerClass));
observer.parsed(bytes, offset + 4, 2, " name: " + DirectClassFile.stringOrNone(name));
observer.parsed(
bytes, offset + 6, 2, " access_flags: " + AccessFlags.innerClassString(accessFlags));
}
offset += 8;
}
list.setImmutable();
return new AttInnerClasses(list);
}
/** Parses a {@code SourceFile} attribute. */
private Attribute sourceFile(DirectClassFile cf, int offset, int length, ParseObserver observer) {
if (length != 2) {
throwBadLength(2);
}
ByteArray bytes = cf.getBytes();
ConstantPool pool = cf.getConstantPool();
int idx = bytes.getUnsignedShort(offset);
CstString cst = (CstString) pool.get(idx);
Attribute result = new AttSourceFile(cst);
if (observer != null) {
observer.parsed(bytes, offset, 2, "source: " + cst);
}
return result;
}
public void visitLocalVariable(
final String name,
final String desc,
final String signature,
final Label start,
final Label end,
final int index) {
if (signature != null) {
cp.newUTF8("LocalVariableTypeTable");
cp.newUTF8(name);
cp.newUTF8(signature);
}
cp.newUTF8("LocalVariableTable");
cp.newUTF8(name);
cp.newUTF8(desc);
mv.visitLocalVariable(name, desc, signature, start, end, index);
}
public void visit(
final int version,
final int access,
final String name,
final String signature,
final String superName,
final String[] interfaces) {
if ((access & Opcodes.ACC_DEPRECATED) != 0) {
cp.newUTF8("Deprecated");
}
if ((access & Opcodes.ACC_SYNTHETIC) != 0) {
cp.newUTF8("Synthetic");
}
cp.newClass(name);
if (signature != null) {
cp.newUTF8("Signature");
cp.newUTF8(signature);
}
if (superName != null) {
cp.newClass(superName);
}
if (interfaces != null) {
for (int i = 0; i < interfaces.length; ++i) {
cp.newClass(interfaces[i]);
}
}
cv.visit(version, access, name, signature, superName, interfaces);
}
public MethodVisitor visitMethod(
final int access,
final String name,
final String desc,
final String signature,
final String[] exceptions) {
if ((access & Opcodes.ACC_SYNTHETIC) != 0) {
cp.newUTF8("Synthetic");
}
if ((access & Opcodes.ACC_DEPRECATED) != 0) {
cp.newUTF8("Deprecated");
}
cp.newUTF8(name);
cp.newUTF8(desc);
if (signature != null) {
cp.newUTF8("Signature");
cp.newUTF8(signature);
}
if (exceptions != null) {
cp.newUTF8("Exceptions");
for (int i = 0; i < exceptions.length; ++i) {
cp.newClass(exceptions[i]);
}
}
return new MethodConstantsCollector(
cv.visitMethod(access, name, desc, signature, exceptions), cp);
}
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();
}
}
}
}
/** Parses a {@code ConstantValue} attribute. */
private Attribute constantValue(
DirectClassFile cf, int offset, int length, ParseObserver observer) {
if (length != 2) {
return throwBadLength(2);
}
ByteArray bytes = cf.getBytes();
ConstantPool pool = cf.getConstantPool();
int idx = bytes.getUnsignedShort(offset);
TypedConstant cst = (TypedConstant) pool.get(idx);
Attribute result = new AttConstantValue(cst);
if (observer != null) {
observer.parsed(bytes, offset, 2, "value: " + cst);
}
return result;
}
@Override
public AnnotationVisitor visitLocalVariableAnnotation(
int typeRef,
TypePath typePath,
Label[] start,
Label[] end,
int[] index,
String desc,
boolean visible) {
cp.newUTF8(desc);
if (visible) {
cp.newUTF8("RuntimeVisibleTypeAnnotations");
} else {
cp.newUTF8("RuntimeInvisibleTypeAnnotations");
}
return new AnnotationConstantsCollector(
mv.visitLocalVariableAnnotation(typeRef, typePath, start, end, index, desc, visible), cp);
}
/** Collect all constants into the constant table */
public void collect(Environment env, MemberDefinition field, ConstantPool tab) {
// Collect constants for arguments only
// if a local variable table is generated
if ((field != null) && env.debug_vars()) {
if (field.getArguments() != null) {
for (Enumeration e = field.getArguments().elements(); e.hasMoreElements(); ) {
MemberDefinition f = (MemberDefinition) e.nextElement();
tab.put(f.getName().toString());
tab.put(f.getType().getTypeSignature());
}
}
}
// Collect constants from the instructions
for (Instruction inst = first; inst != null; inst = inst.next) {
inst.collect(tab);
}
}
