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non default constructible types
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//
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//this example coverls all the corner cases that can happen using inherintace
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//this example covers all the corner cases that can happen using inheritance
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//in reality virtual inherintance is usually avoided, so your code would look much simpler.
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//
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65
examples/non_default_constructible.cpp
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65
examples/non_default_constructible.cpp
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//
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// example of how to deserialize non default constructible objects
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//
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#include <bitsery/bitsery.h>
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#include <bitsery/adapter/buffer.h>
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#include <bitsery/traits/vector.h>
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class MyData {
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//define your private data
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float _x{0};
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float _y{0};
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//make bitsery:Access friend
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friend class bitsery::Access;
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//create default constructor, don't worry about class invariant, it will be restored in deserialization
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MyData() = default;
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//define serialize function
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template <typename S>
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void serialize(S& s) {
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s.value4b(_x);
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s.value4b(_y);
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}
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public:
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//define non default public constructor
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MyData(float x, float y):_x{x}, _y{y} {}
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//this is for convenience
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bool operator ==(const MyData&rhs) const {
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return _x == rhs._x && _y == rhs._y;
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}
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};
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using namespace bitsery;
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//some helper types
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using Buffer = std::vector<uint8_t>;
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using OutputAdapter = OutputBufferAdapter<Buffer>;
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using InputAdapter = InputBufferAdapter<Buffer>;
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int main() {
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//initialize our data
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std::vector<MyData> data{};
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data.emplace_back(145.4f, 84.48f);
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std::vector<MyData> res{};
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//we cant use quick (de)serialization helper methods, because we ant to serialize container directly
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//create buffer
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Buffer buffer{};
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//create and serialize container, and get written bytes count
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Serializer<OutputAdapter> ser{OutputAdapter{buffer}};
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ser.container(data, 10);
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auto writtenBytes = AdapterAccess::getWriter(ser).writtenBytesCount();
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//create and deserialize container
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Deserializer<InputAdapter> des{InputAdapter{buffer.begin(), writtenBytes}};
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des.container(res, 10);
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//check if everything went ok
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auto& reader = AdapterAccess::getReader(des);
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assert(reader.error() == ReaderError::NoError && reader.isCompletedSuccessfully());
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assert(res == data);
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}
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