// private static native Object invoke0(Method method, Object o, Object[] os);
// (Ljava/lang/reflect/Method;Ljava/lang/Object;[Ljava/lang/Object;)Ljava/lang/Object;
func invoke0(frame *rtda.Frame) {
stack := frame.OperandStack()
if stack.IsEmpty() {
frame.RevertNextPC()
_invokeMethod(frame)
} else {
returnType := frame.LocalVars().Get(0).(*rtc.FieldType)
if returnType.IsBaseType() && !returnType.IsVoidType() {
primitiveDescriptor := returnType.Descriptor()[0]
box.Box(frame, primitiveDescriptor) // todo
}
}
}
// public static native Object get(Object array, int index)
// throws IllegalArgumentException, ArrayIndexOutOfBoundsException;
// (Ljava/lang/Object;I)Ljava/lang/Object;
func get(frame *rtda.Frame) {
vars := frame.LocalVars()
arr := vars.GetRef(0)
index := vars.GetInt(1)
if arr == nil {
frame.Thread().ThrowNPE()
return
}
if !arr.IsArray() {
frame.Thread().ThrowIllegalArgumentException("Argument is not an array")
return
}
if index < 0 || index >= heap.ArrayLength(arr) {
frame.Thread().ThrowArrayIndexOutOfBoundsExceptionNoMsg()
return
}
if !arr.IsPrimitiveArray() {
obj := arr.Refs()[index]
frame.OperandStack().PushRef(obj)
return
}
// primitive array
stack := frame.OperandStack()
primitiveDescriptor := arr.Class().Name()[1]
switch primitiveDescriptor {
case 'Z':
stack.PushBoolean(arr.Booleans()[index] == 1)
case 'B':
stack.PushInt(int32(arr.Bytes()[index]))
case 'C':
stack.PushInt(int32(arr.Chars()[index]))
case 'S':
stack.PushInt(int32(arr.Shorts()[index]))
case 'I':
stack.PushInt(arr.Ints()[index])
case 'J':
stack.PushLong(arr.Longs()[index])
case 'F':
stack.PushFloat(arr.Floats()[index])
case 'D':
stack.PushDouble(arr.Doubles()[index])
}
// boxing
box.Box(frame, primitiveDescriptor)
}