#include "config.h"
#include "InByIdVariant.h"
namespace JSC {
InByIdVariant::InByIdVariant(const StructureSet& structureSet, PropertyOffset offset, const ObjectPropertyConditionSet& conditionSet)
: m_structureSet(structureSet)
, m_conditionSet(conditionSet)
, m_offset(offset)
{
if (!structureSet.size()) {
ASSERT(offset == invalidOffset);
ASSERT(conditionSet.isEmpty());
}
}
bool InByIdVariant::attemptToMerge(const InByIdVariant& other)
{
if (m_offset != other.m_offset)
return false;
if (m_conditionSet.isEmpty() != other.m_conditionSet.isEmpty())
return false;
ObjectPropertyConditionSet mergedConditionSet;
if (!m_conditionSet.isEmpty()) {
mergedConditionSet = m_conditionSet.mergedWith(other.m_conditionSet);
if (!mergedConditionSet.isValid())
return false;
if (isHit() && !mergedConditionSet.hasOneSlotBaseCondition())
return false;
}
m_conditionSet = mergedConditionSet;
m_structureSet.merge(other.m_structureSet);
return true;
}
void InByIdVariant::markIfCheap(SlotVisitor& visitor)
{
m_structureSet.markIfCheap(visitor);
}
bool InByIdVariant::finalize(VM& vm)
{
if (!m_structureSet.isStillAlive(vm))
return false;
if (!m_conditionSet.areStillLive(vm))
return false;
return true;
}
void InByIdVariant::dump(PrintStream& out) const
{
dumpInContext(out, nullptr);
}
void InByIdVariant::dumpInContext(PrintStream& out, DumpContext* context) const
{
if (!isSet()) {
out.print("<empty>");
return;
}
out.print(
"<", inContext(structureSet(), context), ", ", inContext(m_conditionSet, context));
out.print(", offset = ", offset());
out.print(">");
}
}