IDBDatabaseIdentifier.h [plain text]
#pragma once
#if ENABLE(INDEXED_DATABASE)
#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)
{
}
IDBDatabaseIdentifier isolatedCopy() const;
bool isHashTableDeletedValue() const
{
return m_databaseName.isHashTableDeletedValue();
}
unsigned hash() const
{
unsigned nameHash = StringHash::hash(m_databaseName);
unsigned openingProtocolHash = StringHash::hash(m_openingOrigin.protocol);
unsigned openingHostHash = StringHash::hash(m_openingOrigin.host);
unsigned mainFrameProtocolHash = StringHash::hash(m_mainFrameOrigin.protocol);
unsigned mainFrameHostHash = StringHash::hash(m_mainFrameOrigin.host);
unsigned hashCodes[7] = { nameHash, openingProtocolHash, openingHostHash, m_openingOrigin.port.value_or(0), mainFrameProtocolHash, mainFrameHostHash, m_mainFrameOrigin.port.value_or(0) };
return StringHasher::hashMemory<sizeof(hashCodes)>(hashCodes);
}
IDBDatabaseIdentifier(const String& databaseName, const SecurityOrigin& openingOrigin, const SecurityOrigin& mainFrameOrigin);
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_openingOrigin == m_openingOrigin
&& other.m_mainFrameOrigin == m_mainFrameOrigin;
}
const String& databaseName() const { return m_databaseName; }
String databaseDirectoryRelativeToRoot(const String& rootDirectory) const;
static String databaseDirectoryRelativeToRoot(const SecurityOriginData& topLevelOrigin, const SecurityOriginData& openingOrigin, const String& rootDirectory);
template<class Encoder> void encode(Encoder&) const;
template<class Decoder> static bool decode(Decoder&, IDBDatabaseIdentifier&);
#if !LOG_DISABLED
String debugString() const;
#endif
bool isRelatedToOrigin(const SecurityOriginData& other) const
{
return m_openingOrigin == other || m_mainFrameOrigin == other;
}
private:
String m_databaseName;
SecurityOriginData m_openingOrigin;
SecurityOriginData m_mainFrameOrigin;
};
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_openingOrigin << m_mainFrameOrigin;
}
template<class Decoder>
bool IDBDatabaseIdentifier::decode(Decoder& decoder, IDBDatabaseIdentifier& identifier)
{
if (!decoder.decode(identifier.m_databaseName))
return false;
if (!decoder.decode(identifier.m_openingOrigin))
return false;
if (!decoder.decode(identifier.m_mainFrameOrigin))
return false;
return true;
}
}
namespace WTF {
template<> struct HashTraits<WebCore::IDBDatabaseIdentifier> : WebCore::IDBDatabaseIdentifierHashTraits { };
template<> struct DefaultHash<WebCore::IDBDatabaseIdentifier> {
typedef WebCore::IDBDatabaseIdentifierHash Hash;
};
}
#endif // ENABLE(INDEXED_DATABASE)