added iOS source code

[wl-app.git] / iOS / Pods / Realm / include / core / realm / sync / instruction_applier.hpp

diff --git a/iOS/Pods/Realm/include/core/realm/sync/instruction_applier.hpp b/iOS/Pods/Realm/include/core/realm/sync/instruction_applier.hpp
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+++ b/iOS/Pods/Realm/include/core/realm/sync/instruction_applier.hpp
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+/*************************************************************************
+ *
+ * Copyright 2017 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_SYNC_IMPL_INSTRUCTION_APPLIER_HPP
+#define REALM_SYNC_IMPL_INSTRUCTION_APPLIER_HPP
+
+#include <realm/sync/instructions.hpp>
+#include <realm/sync/changeset.hpp>
+#include <realm/util/logger.hpp>
+
+namespace realm {
+namespace sync {
+
+struct Changeset;
+
+struct InstructionApplier {
+    explicit InstructionApplier(Group& group) noexcept;
+
+    void apply(const Changeset& log, util::Logger* logger);
+
+protected:
+    StringData get_string(InternString) const;
+    StringData get_string(StringBufferRange) const;
+#define REALM_DECLARE_INSTRUCTION_HANDLER(X) void operator()(const Instruction::X&);
+    REALM_FOR_EACH_INSTRUCTION_TYPE(REALM_DECLARE_INSTRUCTION_HANDLER)
+#undef REALM_DECLARE_INSTRUCTION_HANDLER
+    friend struct Instruction; // to allow visitor
+
+    template<class A> static void apply(A& applier, const Changeset& log, util::Logger* logger);
+
+private:
+    const Changeset* m_log = nullptr;
+    util::Logger* m_logger = nullptr;
+    Group& m_group;
+    TableRef m_selected_table;
+    TableRef m_selected_array;
+    LinkViewRef m_selected_link_list;
+    TableRef m_link_target_table;
+
+    template <class... Args>
+    void log(const char* fmt, Args&&... args)
+    {
+        if (m_logger) {
+            m_logger->trace(fmt, std::forward<Args>(args)...); // Throws
+        }
+    }
+
+    void bad_transaction_log(const char*) const; // Throws
+
+    TableRef table_for_class_name(StringData) const; // Throws
+};
+
+
+
+
+// Implementation
+
+inline InstructionApplier::InstructionApplier(Group& group) noexcept:
+    m_group(group)
+{
+}
+
+template<class A>
+inline void InstructionApplier::apply(A& applier, const Changeset& log, util::Logger* logger)
+{
+    applier.m_log = &log;
+    applier.m_logger = logger;
+    for (auto instr: log) {
+        if (!instr)
+            continue;
+        instr->visit(applier); // Throws
+    }
+    applier.m_log = nullptr;
+    applier.m_logger = nullptr;
+    applier.m_selected_table = TableRef{};
+    applier.m_selected_link_list = LinkViewRef{};
+    applier.m_link_target_table = TableRef{};
+}
+
+inline void InstructionApplier::apply(const Changeset& log, util::Logger* logger)
+{
+    apply(*this, log, logger); // Throws
+}
+
+} // namespace sync
+} // namespace realm
+
+#endif // REALM_SYNC_IMPL_INSTRUCTION_APPLIER_HPP