public ClassNode box() {
MethodVisitor mv = controller.getMethodVisitor();
int size = stack.size();
ClassNode type = stack.get(size - 1);
if (ClassHelper.isPrimitiveType(type) && ClassHelper.VOID_TYPE != type) {
ClassNode wrapper = ClassHelper.getWrapper(type);
BytecodeHelper.doCastToWrappedType(mv, type, wrapper);
type = wrapper;
} // else nothing to box
stack.set(size - 1, type);
return type;
}
private void doConvertAndCast(ClassNode targetType, boolean coerce) {
int size = stack.size();
throwExceptionForNoStackElement(size, targetType, coerce);
ClassNode top = stack.get(size - 1);
targetType = targetType.redirect();
if (targetType == top) return;
if (coerce) {
controller.getInvocationWriter().coerce(top, targetType);
return;
}
boolean primTarget = ClassHelper.isPrimitiveType(targetType);
boolean primTop = ClassHelper.isPrimitiveType(top);
if (primTop && primTarget) {
// here we box and unbox to get the goal type
if (convertPrimitive(top, targetType)) {
replace(targetType);
return;
}
box();
} else if (primTop) {
// top is primitive, target is not
// so box and do groovy cast
controller.getInvocationWriter().castToNonPrimitiveIfNecessary(top, targetType);
} else if (primTarget) {
// top is not primitive so unbox
// leave that BH#doCast later
} else {
controller.getInvocationWriter().castToNonPrimitiveIfNecessary(top, targetType);
}
MethodVisitor mv = controller.getMethodVisitor();
if (primTarget
&& !ClassHelper.boolean_TYPE.equals(targetType)
&& !primTop
&& ClassHelper.getWrapper(targetType).equals(top)) {
BytecodeHelper.doCastToPrimitive(mv, top, targetType);
} else {
top = stack.get(size - 1);
if (!WideningCategories.implementsInterfaceOrSubclassOf(top, targetType)) {
BytecodeHelper.doCast(mv, targetType);
}
}
replace(targetType);
}
