boolean computeSubtypeOf(Klass k) {
// An array is a subtype of Serializable, Clonable, and Object
Symbol name = k.getName();
if (name != null
&& (name.equals(javaIoSerializableName())
|| name.equals(javaLangCloneableName())
|| name.equals(javaLangObjectName()))) {
return true;
} else {
return false;
}
}
/** Field access by name. */
public Field findLocalField(Symbol name, Symbol sig) {
TypeArray fields = getFields();
int n = (int) fields.getLength();
ConstantPool cp = getConstants();
for (int i = 0; i < n; i += NEXT_OFFSET) {
int nameIndex = fields.getShortAt(i + NAME_INDEX_OFFSET);
int sigIndex = fields.getShortAt(i + SIGNATURE_INDEX_OFFSET);
Symbol f_name = cp.getSymbolAt(nameIndex);
Symbol f_sig = cp.getSymbolAt(sigIndex);
if (name.equals(f_name) && sig.equals(f_sig)) {
return newField(i);
}
}
return null;
}
// refer to compute_modifier_flags in VM code.
public long computeModifierFlags() {
long access = getAccessFlags();
// But check if it happens to be member class.
TypeArray innerClassList = getInnerClasses();
int length = (innerClassList == null) ? 0 : (int) innerClassList.getLength();
if (length > 0) {
if (Assert.ASSERTS_ENABLED) {
Assert.that(length % InnerClassAttributeOffset.innerClassNextOffset == 0, "just checking");
}
for (int i = 0; i < length; i += InnerClassAttributeOffset.innerClassNextOffset) {
int ioff =
innerClassList.getShortAt(i + InnerClassAttributeOffset.innerClassInnerClassInfoOffset);
// 'ioff' can be zero.
// refer to JVM spec. section 4.7.5.
if (ioff != 0) {
// only look at classes that are already loaded
// since we are looking for the flags for our self.
Oop classInfo = getConstants().getObjAt(ioff);
Symbol name = null;
if (classInfo instanceof Klass) {
name = ((Klass) classInfo).getName();
} else if (classInfo instanceof Symbol) {
name = (Symbol) classInfo;
} else {
throw new RuntimeException("should not reach here");
}
if (name.equals(getName())) {
// This is really a member class
access =
innerClassList.getShortAt(
i + InnerClassAttributeOffset.innerClassAccessFlagsOffset);
break;
}
}
} // for inner classes
}
// Remember to strip ACC_SUPER bit
return (access & (~JVM_ACC_SUPER)) & JVM_ACC_WRITTEN_FLAGS;
}
private boolean isInInnerClasses(Symbol sym, boolean includeLocals) {
TypeArray innerClassList = getInnerClasses();
int length = (innerClassList == null) ? 0 : (int) innerClassList.getLength();
if (length > 0) {
if (Assert.ASSERTS_ENABLED) {
Assert.that(length % InnerClassAttributeOffset.innerClassNextOffset == 0, "just checking");
}
for (int i = 0; i < length; i += InnerClassAttributeOffset.innerClassNextOffset) {
int ioff =
innerClassList.getShortAt(i + InnerClassAttributeOffset.innerClassInnerClassInfoOffset);
// 'ioff' can be zero.
// refer to JVM spec. section 4.7.5.
if (ioff != 0) {
Oop iclassInfo = getConstants().getObjAt(ioff);
Symbol innerName = null;
if (iclassInfo instanceof Klass) {
innerName = ((Klass) iclassInfo).getName();
} else if (iclassInfo instanceof Symbol) {
innerName = (Symbol) iclassInfo;
} else {
throw new RuntimeException("should not reach here");
}
Symbol myname = getName();
int ooff =
innerClassList.getShortAt(
i + InnerClassAttributeOffset.innerClassOuterClassInfoOffset);
// for anonymous classes inner_name_index of InnerClasses
// attribute is zero.
int innerNameIndex =
innerClassList.getShortAt(i + InnerClassAttributeOffset.innerClassInnerNameOffset);
// if this is not a member (anonymous, local etc.), 'ooff' will be zero
// refer to JVM spec. section 4.7.5.
if (ooff == 0) {
if (includeLocals) {
// does it looks like my local class?
if (innerName.equals(sym) && innerName.asString().startsWith(myname.asString())) {
// exclude anonymous classes.
return (innerNameIndex != 0);
}
}
} else {
Oop oclassInfo = getConstants().getObjAt(ooff);
Symbol outerName = null;
if (oclassInfo instanceof Klass) {
outerName = ((Klass) oclassInfo).getName();
} else if (oclassInfo instanceof Symbol) {
outerName = (Symbol) oclassInfo;
} else {
throw new RuntimeException("should not reach here");
}
// include only if current class is outer class.
if (outerName.equals(myname) && innerName.equals(sym)) {
return true;
}
}
}
} // for inner classes
return false;
} else {
return false;
}
}
