IDBDatabaseIdentifier.h [plain text]
#pragma once
#if ENABLE(INDEXED_DATABASE)
#include "ClientOrigin.h"
#include "SecurityOriginData.h"
#include <wtf/text/StringHash.h>
#include <wtf/text/WTFString.h>
namespace WebCore {
class SecurityOrigin;
class IDBDatabaseIdentifier {
public:
IDBDatabaseIdentifier() { }
IDBDatabaseIdentifier(WTF::HashTableDeletedValueType)
: m_databaseName(WTF::HashTableDeletedValue)
{
}
WEBCORE_EXPORT IDBDatabaseIdentifier(const String& databaseName, SecurityOriginData&& openingOrigin, SecurityOriginData&& mainFrameOrigin);
IDBDatabaseIdentifier isolatedCopy() const;
bool isHashTableDeletedValue() const
{
return m_databaseName.isHashTableDeletedValue();
}
unsigned hash() const
{
unsigned nameHash = StringHash::hash(m_databaseName);
unsigned originHash = m_origin.hash();
unsigned hashCodes[2] = { nameHash, originHash };
return StringHasher::hashMemory<sizeof(hashCodes)>(hashCodes);
}
bool isValid() const
{
return !m_databaseName.isNull()
&& !m_databaseName.isHashTableDeletedValue();
}
bool isEmpty() const
{
return m_databaseName.isNull();
}
bool operator==(const IDBDatabaseIdentifier& other) const
{
return other.m_databaseName == m_databaseName && other.m_origin == m_origin;
}
const String& databaseName() const { return m_databaseName; }
const ClientOrigin& origin() const { return m_origin; }
String databaseDirectoryRelativeToRoot(const String& rootDirectory, const String& versionString="v1") const;
static String databaseDirectoryRelativeToRoot(const SecurityOriginData& topLevelOrigin, const SecurityOriginData& openingOrigin, const String& rootDirectory, const String& versionString);
template<class Encoder> void encode(Encoder&) const;
template<class Decoder> static Optional<IDBDatabaseIdentifier> decode(Decoder&);
#if !LOG_DISABLED
String loggingString() const;
#endif
bool isRelatedToOrigin(const SecurityOriginData& other) const { return m_origin.isRelated(other); }
private:
String m_databaseName;
ClientOrigin m_origin;
};
struct IDBDatabaseIdentifierHash {
static unsigned hash(const IDBDatabaseIdentifier& a) { return a.hash(); }
static bool equal(const IDBDatabaseIdentifier& a, const IDBDatabaseIdentifier& b) { return a == b; }
static const bool safeToCompareToEmptyOrDeleted = false;
};
struct IDBDatabaseIdentifierHashTraits : WTF::SimpleClassHashTraits<IDBDatabaseIdentifier> {
static const bool hasIsEmptyValueFunction = true;
static const bool emptyValueIsZero = false;
static bool isEmptyValue(const IDBDatabaseIdentifier& info) { return info.isEmpty(); }
};
template<class Encoder>
void IDBDatabaseIdentifier::encode(Encoder& encoder) const
{
encoder << m_databaseName << m_origin;
}
template<class Decoder>
Optional<IDBDatabaseIdentifier> IDBDatabaseIdentifier::decode(Decoder& decoder)
{
Optional<String> databaseName;
decoder >> databaseName;
if (!databaseName)
return WTF::nullopt;
Optional<ClientOrigin> origin;
decoder >> origin;
if (!origin)
return WTF::nullopt;
IDBDatabaseIdentifier identifier;
identifier.m_databaseName = WTFMove(*databaseName); identifier.m_origin = WTFMove(*origin);
return identifier;
}
}
namespace WTF {
template<> struct HashTraits<WebCore::IDBDatabaseIdentifier> : WebCore::IDBDatabaseIdentifierHashTraits { };
template<> struct DefaultHash<WebCore::IDBDatabaseIdentifier> {
typedef WebCore::IDBDatabaseIdentifierHash Hash;
};
}
#endif // ENABLE(INDEXED_DATABASE)