ConstantDynamicSlotIterator.cpp

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 * forth in the Eclipse Public License, v. 2.0 are satisfied: GNU
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/**
 * @file
 * @ingroup GC_Structs
 */

#include "j9.h"
#include "ModronAssertions.h"

#include "ConstantDynamicSlotIterator.hpp"


/**
 * Scan the current constant dynamic slot
 * @return slot value if it is not NULL
 * @return exception otherwise
 */
j9object_t*
GC_ConstantDynamicSlotIterator::nextSlot(j9object_t *slotPtr) {
	j9object_t *result;
	switch (_condySlotState) {
	case condy_slot_value:
		result = &(((J9RAMConstantDynamicRef *) slotPtr)->value);
		_condySlotState = condy_slot_exception;
		break;
	case condy_slot_exception:
		result = &(((J9RAMConstantDynamicRef *) slotPtr)->exception);
		_condySlotState = condy_slot_terminator;
		break;
	case condy_slot_terminator:
		result = NULL;
		_condySlotState = condy_slot_value;
		break;
	default:
		Assert_MM_unreachable();
		break;
	}
	return result;
}