public void visitLibraryClass(LibraryClass libraryClass) {
if (shouldBeMarkedAsUsed(libraryClass)) {
markAsUsed(libraryClass);
// We're not going to analyze all library code. We're assuming that
// if this class is being used, all of its methods will be used as
// well. We'll mark them as such (here and in all subclasses).
// Mark the superclass.
Clazz superClass = libraryClass.superClass;
if (superClass != null) {
superClass.accept(this);
}
// Mark the interfaces.
Clazz[] interfaceClasses = libraryClass.interfaceClasses;
if (interfaceClasses != null) {
for (int index = 0; index < interfaceClasses.length; index++) {
if (interfaceClasses[index] != null) {
interfaceClasses[index].accept(this);
}
}
}
// Mark all methods.
libraryClass.methodsAccept(this);
}
}
public void visitInnerClassesInfo(Clazz clazz, InnerClassesInfo innerClassesInfo) {
// At this point, we only mark outer classes of this class.
// Inner class can be marked later, by InnerUsageMarker.
if (innerClassesInfo.u2innerClassIndex != 0
&& clazz.getName().equals(clazz.getClassName(innerClassesInfo.u2innerClassIndex))) {
markAsUsed(innerClassesInfo);
innerClassesInfo.innerClassConstantAccept(clazz, this);
innerClassesInfo.outerClassConstantAccept(clazz, this);
innerClassesInfo.innerNameConstantAccept(clazz, this);
}
}
/**
* Marks the hierarchy of implementing or overriding methods corresponding to the given method, if
* any.
*/
protected void markMethodHierarchy(Clazz clazz, Method method) {
int accessFlags = method.getAccessFlags();
if ((accessFlags & (ClassConstants.ACC_PRIVATE | ClassConstants.ACC_STATIC)) == 0
&& !ClassUtil.isInitializer(method.getName(clazz))) {
// We can skip private and static methods in the hierarchy, and
// also abstract methods, unless they might widen a current
// non-public access.
int requiredUnsetAccessFlags =
ClassConstants.ACC_PRIVATE
| ClassConstants.ACC_STATIC
| ((accessFlags & ClassConstants.ACC_PUBLIC) == 0 ? 0 : ClassConstants.ACC_ABSTRACT);
clazz.accept(
new ConcreteClassDownTraveler(
new ClassHierarchyTraveler(
true,
true,
false,
true,
new NamedMethodVisitor(
method.getName(clazz),
method.getDescriptor(clazz),
new MemberAccessFilter(0, requiredUnsetAccessFlags, this)))));
}
}
/**
* Marks the hierarchy of implementing or overriding methods corresponding to the given method, if
* any.
*/
protected void markMethodHierarchy(Clazz clazz, Method method) {
int accessFlags = method.getAccessFlags();
if ((accessFlags & (ClassConstants.ACC_PRIVATE | ClassConstants.ACC_STATIC)) == 0
&& !ClassUtil.isInitializer(method.getName(clazz))) {
// We can skip private and static methods in the hierarchy, and
// also abstract methods, unless they might widen a current
// non-public access.
int requiredUnsetAccessFlags =
ClassConstants.ACC_PRIVATE
| ClassConstants.ACC_STATIC
| ((accessFlags & ClassConstants.ACC_PUBLIC) == 0 ? 0 : ClassConstants.ACC_ABSTRACT);
// Mark default implementations in interfaces down the hierarchy.
// TODO: This may be premature if there aren't any concrete implementing classes.
clazz.accept(
new ClassAccessFilter(
ClassConstants.ACC_ABSTRACT,
0,
new ClassHierarchyTraveler(
false,
false,
false,
true,
new ProgramClassFilter(
new ClassAccessFilter(
ClassConstants.ACC_ABSTRACT,
0,
new NamedMethodVisitor(
method.getName(clazz),
method.getDescriptor(clazz),
new MemberAccessFilter(
0, requiredUnsetAccessFlags, defaultMethodUsageMarker)))))));
// Mark other implementations.
clazz.accept(
new ConcreteClassDownTraveler(
new ClassHierarchyTraveler(
true,
true,
false,
true,
new NamedMethodVisitor(
method.getName(clazz),
method.getDescriptor(clazz),
new MemberAccessFilter(0, requiredUnsetAccessFlags, this)))));
}
}
public void visitInvokeDynamicConstant(Clazz clazz, InvokeDynamicConstant invokeDynamicConstant) {
if (shouldBeMarkedAsUsed(invokeDynamicConstant)) {
markAsUsed(invokeDynamicConstant);
markConstant(clazz, invokeDynamicConstant.u2nameAndTypeIndex);
// Mark the bootstrap methods attribute.
clazz.attributesAccept(
new MyBootStrapMethodUsageMarker(invokeDynamicConstant.u2bootstrapMethodAttributeIndex));
}
}
public void visitConstantInstruction(
Clazz clazz,
Method method,
CodeAttribute codeAttribute,
int offset,
ConstantInstruction constantInstruction) {
markConstant(clazz, constantInstruction.constantIndex);
// Also mark the parameterless constructor of the class, in case the
// string constant or class constant is being used in a Class.forName
// or a .class construct.
clazz.constantPoolEntryAccept(
constantInstruction.constantIndex, parameterlessConstructorMarker);
}
/**
* Marks the given constant pool entry of the given class. This includes visiting any referenced
* objects.
*/
private void markConstant(Clazz clazz, int index) {
clazz.constantPoolEntryAccept(index, this);
}