added iOS source code

[wl-app.git] / iOS / Pods / Realm / Realm / ObjectStore / src / impl / list_notifier.cpp

diff --git a/iOS/Pods/Realm/Realm/ObjectStore/src/impl/list_notifier.cpp b/iOS/Pods/Realm/Realm/ObjectStore/src/impl/list_notifier.cpp
new file mode 100644 (file)
index 0000000..a2b459c
--- /dev/null
+++ b/iOS/Pods/Realm/Realm/ObjectStore/src/impl/list_notifier.cpp
@@ -0,0 +1,109 @@
+////////////////////////////////////////////////////////////////////////////
+//
+// Copyright 2016 Realm Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+////////////////////////////////////////////////////////////////////////////
+
+#include "impl/list_notifier.hpp"
+
+#include "shared_realm.hpp"
+
+#include <realm/link_view.hpp>
+
+using namespace realm;
+using namespace realm::_impl;
+
+ListNotifier::ListNotifier(LinkViewRef lv, std::shared_ptr<Realm> realm)
+: CollectionNotifier(std::move(realm))
+, m_prev_size(lv->size())
+{
+    set_table(lv->get_target_table());
+    m_lv_handover = source_shared_group().export_linkview_for_handover(lv);
+}
+
+void ListNotifier::release_data() noexcept
+{
+    m_lv.reset();
+}
+
+void ListNotifier::do_attach_to(SharedGroup& sg)
+{
+    REALM_ASSERT(m_lv_handover);
+    REALM_ASSERT(!m_lv);
+    m_lv = sg.import_linkview_from_handover(std::move(m_lv_handover));
+}
+
+void ListNotifier::do_detach_from(SharedGroup& sg)
+{
+    REALM_ASSERT(!m_lv_handover);
+    if (m_lv) {
+        m_lv_handover = sg.export_linkview_for_handover(m_lv);
+        m_lv = {};
+    }
+}
+
+bool ListNotifier::do_add_required_change_info(TransactionChangeInfo& info)
+{
+    REALM_ASSERT(!m_lv_handover);
+    if (!m_lv || !m_lv->is_attached()) {
+        return false; // origin row was deleted after the notification was added
+    }
+
+    auto& table = m_lv->get_origin_table();
+    size_t row_ndx = m_lv->get_origin_row_index();
+    size_t col_ndx = find_container_column(table, row_ndx, m_lv, type_LinkList, &Table::get_linklist);
+    info.lists.push_back({table.get_index_in_group(), row_ndx, col_ndx, &m_change});
+
+    m_info = &info;
+    return true;
+}
+
+void ListNotifier::run()
+{
+    if (!m_lv || !m_lv->is_attached()) {
+        // LV was deleted, so report all of the rows being removed if this is
+        // the first run after that
+        if (m_prev_size) {
+            m_change.deletions.set(m_prev_size);
+            m_prev_size = 0;
+        }
+        else {
+            m_change = {};
+        }
+        return;
+    }
+
+    auto row_did_change = get_modification_checker(*m_info, m_lv->get_target_table());
+    for (size_t i = 0; i < m_lv->size(); ++i) {
+        if (m_change.modifications.contains(i))
+            continue;
+        if (row_did_change(m_lv->get(i).get_index()))
+            m_change.modifications.add(i);
+    }
+
+    for (auto const& move : m_change.moves) {
+        if (m_change.modifications.contains(move.to))
+            continue;
+        if (row_did_change(m_lv->get(move.to).get_index()))
+            m_change.modifications.add(move.to);
+    }
+
+    m_prev_size = m_lv->size();
+}
+
+void ListNotifier::do_prepare_handover(SharedGroup&)
+{
+    add_changes(std::move(m_change));
+}