added iOS source code

[wl-app.git] / iOS / Pods / Realm / include / impl / collection_change_builder.hpp

diff --git a/iOS/Pods/Realm/include/impl/collection_change_builder.hpp b/iOS/Pods/Realm/include/impl/collection_change_builder.hpp
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+////////////////////////////////////////////////////////////////////////////
+//
+// 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.
+//
+////////////////////////////////////////////////////////////////////////////
+
+#ifndef REALM_COLLECTION_CHANGE_BUILDER_HPP
+#define REALM_COLLECTION_CHANGE_BUILDER_HPP
+
+#include "collection_notifications.hpp"
+
+#include <realm/util/optional.hpp>
+
+#include <unordered_map>
+
+namespace realm {
+namespace _impl {
+class CollectionChangeBuilder : public CollectionChangeSet {
+public:
+    CollectionChangeBuilder(CollectionChangeBuilder const&) = default;
+    CollectionChangeBuilder(CollectionChangeBuilder&&) = default;
+    CollectionChangeBuilder& operator=(CollectionChangeBuilder const&) = default;
+    CollectionChangeBuilder& operator=(CollectionChangeBuilder&&) = default;
+
+    CollectionChangeBuilder(IndexSet deletions = {},
+                            IndexSet insertions = {},
+                            IndexSet modification = {},
+                            std::vector<Move> moves = {});
+
+    // Calculate where rows need to be inserted or deleted from old_rows to turn
+    // it into new_rows, and check all matching rows for modifications
+    // If `move_candidates` is supplied they it will be used to do more accurate
+    // determination of which rows moved. This is only supported when the rows
+    // are in table order (i.e. not sorted or from a LinkList)
+    static CollectionChangeBuilder calculate(std::vector<size_t> const& old_rows,
+                                             std::vector<size_t> const& new_rows,
+                                             std::function<bool (size_t)> row_did_change,
+                                             util::Optional<IndexSet> const& move_candidates = util::none);
+
+    // generic operations {
+    CollectionChangeSet finalize() &&;
+    void merge(CollectionChangeBuilder&&);
+
+    void insert(size_t ndx, size_t count=1, bool track_moves=true);
+    void modify(size_t ndx, size_t col=-1);
+    void erase(size_t ndx);
+    void clear(size_t old_size);
+    // }
+
+    // operations only implemented for LinkList semantics {
+    void clean_up_stale_moves();
+    void move(size_t from, size_t to);
+    // }
+
+    // operations only implemented for Row semantics {
+    void move_over(size_t ndx, size_t last_ndx, bool track_moves=true);
+    // must be followed by move_over(old_ndx, ...)
+    // precondition: `new_ndx` must be a new insertion
+    void subsume(size_t old_ndx, size_t new_ndx, bool track_moves=true);
+    void swap(size_t ndx_1, size_t ndx_2, bool track_moves=true);
+
+    void parse_complete();
+    // }
+
+    void insert_column(size_t ndx);
+    void move_column(size_t from, size_t to);
+
+private:
+    std::unordered_map<size_t, size_t> m_move_mapping;
+    bool m_track_columns = true;
+
+    template<typename Func>
+    void for_each_col(Func&& f);
+
+    void verify();
+};
+} // namespace _impl
+} // namespace realm
+
+#endif // REALM_COLLECTION_CHANGE_BUILDER_HPP