DeleteByIdVariant.h [plain text]
#pragma once
#include "CacheableIdentifier.h"
#include "CallLinkStatus.h"
#include "ObjectPropertyConditionSet.h"
#include "PropertyOffset.h"
#include "StructureSet.h"
#include <wtf/Box.h>
namespace JSC {
class CallLinkStatus;
class DeleteByStatus;
struct DumpContext;
class DeleteByIdVariant {
WTF_MAKE_FAST_ALLOCATED;
public:
DeleteByIdVariant(
CacheableIdentifier, bool result,
Structure* oldStrucutre, Structure* newStructure, PropertyOffset);
~DeleteByIdVariant();
DeleteByIdVariant(const DeleteByIdVariant&);
DeleteByIdVariant& operator=(const DeleteByIdVariant&);
Structure* oldStructure() const { return m_oldStructure; }
Structure* newStructure() const { return m_newStructure; }
bool result() const { return m_result; }
bool writesStructures() const;
PropertyOffset offset() const { return m_offset; }
bool isPropertyUnset() const { return offset() == invalidOffset; }
bool attemptToMerge(const DeleteByIdVariant& other);
void visitAggregate(SlotVisitor&);
void markIfCheap(SlotVisitor&);
bool finalize(VM&);
void dump(PrintStream&) const;
void dumpInContext(PrintStream&, DumpContext*) const;
CacheableIdentifier identifier() const { return m_identifier; }
bool overlaps(const DeleteByIdVariant& other)
{
if (!!m_identifier != !!other.m_identifier)
return true;
if (m_identifier) {
if (m_identifier != other.m_identifier)
return false;
}
return m_oldStructure == other.m_oldStructure;
}
private:
friend class DeleteByStatus;
bool m_result;
Structure* m_oldStructure;
Structure* m_newStructure;
PropertyOffset m_offset;
CacheableIdentifier m_identifier;
};
}