added iOS source code

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

diff --git a/iOS/Pods/Realm/include/core/realm/owned_data.hpp b/iOS/Pods/Realm/include/core/realm/owned_data.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_OWNED_DATA_HPP
+#define REALM_OWNED_DATA_HPP
+
+#include <realm/util/assert.hpp>
+
+#include <cstring>
+#include <memory>
+
+namespace realm {
+
+/// A chunk of owned data.
+class OwnedData {
+public:
+    /// Construct a null reference.
+    OwnedData() noexcept
+    {
+    }
+
+    /// If \a data_to_copy is 'null', \a data_size must be zero.
+    OwnedData(const char* data_to_copy, size_t data_size)
+        : m_size(data_size)
+    {
+        REALM_ASSERT_DEBUG(data_to_copy || data_size == 0);
+        if (data_to_copy) {
+            m_data = std::unique_ptr<char[]>(new char[data_size]);
+            memcpy(m_data.get(), data_to_copy, data_size);
+        }
+    }
+
+    /// If \a unique_data is 'null', \a data_size must be zero.
+    OwnedData(std::unique_ptr<char[]> unique_data, size_t data_size) noexcept
+        : m_data(std::move(unique_data))
+        , m_size(data_size)
+    {
+        REALM_ASSERT_DEBUG(m_data || m_size == 0);
+    }
+
+    OwnedData(const OwnedData& other)
+        : OwnedData(other.m_data.get(), other.m_size)
+    {
+    }
+    OwnedData& operator=(const OwnedData& other);
+
+    OwnedData(OwnedData&&) = default;
+    OwnedData& operator=(OwnedData&&) = default;
+
+    const char* data() const
+    {
+        return m_data.get();
+    }
+    size_t size() const
+    {
+        return m_size;
+    }
+
+private:
+    std::unique_ptr<char[]> m_data;
+    size_t m_size = 0;
+};
+
+inline OwnedData& OwnedData::operator=(const OwnedData& other)
+{
+    if (this != &other) {
+        if (other.m_data) {
+            m_data = std::unique_ptr<char[]>(new char[other.m_size]);
+            memcpy(m_data.get(), other.m_data.get(), other.m_size);
+        }
+        else {
+            m_data = nullptr;
+        }
+        m_size = other.m_size;
+    }
+    return *this;
+}
+
+} // namespace realm
+
+#endif // REALM_OWNED_DATA_HPP