44 lines
931 B
C++
44 lines
931 B
C++
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#pragma once
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#include <optional>
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#include <glog/logging.h>
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namespace storage {
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enum class Error : uint8_t {
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SERIALIZATION_ERROR,
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};
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template <typename TReturn>
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class Result final {
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public:
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explicit Result(const TReturn &ret) : return_(ret) {}
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explicit Result(TReturn &&ret) : return_(std::move(ret)) {}
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explicit Result(const Error &error) : error_(error) {}
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bool IsReturn() const { return return_.has_value(); }
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bool IsError() const { return error_.has_value(); }
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TReturn *GetReturn() {
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CHECK(return_) << "The storage result is an error!";
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return &*return_;
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}
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const TReturn *GetReturn() const {
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CHECK(return_) << "The storage result is an error!";
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return &*return_;
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}
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Error GetError() const {
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CHECK(error_) << "The storage result is a return value!";
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return *error_;
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}
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private:
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std::optional<TReturn> return_;
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std::optional<Error> error_;
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};
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} // namespace storage
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