Source/WebKit/NetworkProcess/storage/MemoryStorageArea.cpp

/*
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#include "config.h"
#include "MemoryStorageArea.h"

namespace WebKit {

MemoryStorageArea::MemoryStorageArea(const WebCore::ClientOrigin& origin, StorageAreaBase::StorageType type)
    : StorageAreaBase(WebCore::StorageMap::noQuota, origin)
    , m_map(WebCore::StorageMap(WebCore::StorageMap::noQuota))
    , m_storageType(type)
{
}

bool MemoryStorageArea::isEmpty()
{
    return !m_map.length();
}

void MemoryStorageArea::clear()
{
    m_map.clear();
    notifyListenersAboutClear();
}

HashMap<String, String> MemoryStorageArea::allItems()
{
    return m_map.items();
}

Expected<void, StorageError> MemoryStorageArea::setItem(IPC::Connection::UniqueID connection, StorageAreaImplIdentifier storageAreaImplID, String&& key, String&& value, const String& urlString)
{
    String oldValue;
    bool hasQuotaError = false;
    m_map.setItem(key, value, oldValue, hasQuotaError);
    if (hasQuotaError)
        return makeUnexpected(StorageError::QuotaExceeded);

    dispatchEvents(connection, storageAreaImplID, key, oldValue, value, urlString);

    return { };
}

Expected<void, StorageError> MemoryStorageArea::removeItem(IPC::Connection::UniqueID connection, StorageAreaImplIdentifier storageAreaImplID, const String& key, const String& urlString)
{
    String oldValue;
    m_map.removeItem(key, oldValue);
    dispatchEvents(connection, storageAreaImplID, key, oldValue, String(), urlString);

    return { };
}

Expected<void, StorageError> MemoryStorageArea::clear(IPC::Connection::UniqueID connection, StorageAreaImplIdentifier implIdentifier, const String& urlString)
{
    if (!m_map.length())
        return { };

    m_map.clear();
    dispatchEvents(connection, implIdentifier, String(), String(), String(), urlString);

    return { };
}

std::unique_ptr<MemoryStorageArea> MemoryStorageArea::clone() const
{
    auto storageArea = makeUnique<MemoryStorageArea>(origin(), m_storageType);
    storageArea->m_map = m_map;

    return storageArea;
}

} // namespace WebKit