Ashin Walpola
0e9525162d
obu-firmware builds against vanetza-idf from microbu-esp32c5/external, but that tree was gitignored, so a clone of this repository could not build the firmware it ships. It is now committed here as ordinary files in its own folder, microbu-esp32c5/: the colleague's commit cf4b99f plus the V2X2MAP bridge's signature verification (--trust) used on the bench. Nothing is fetched from or pushed to the colleague's repository; this repository and its remotes carry everything. The folder's own .gitignore keeps build output, downloaded components and private key material out, as it did there; the committed file set is identical to that repository's tracked files. The ESP32-C5 is still flashed from obu-firmware/, which only takes vanetza-idf from microbu-esp32c5/, so the two stay separate folders. FLASHING.md says how to take a newer version of the colleague's tree (copy it over the folder, rebuild, test, commit).
110 lines
3.2 KiB
C++
110 lines
3.2 KiB
C++
#ifndef BYTE_BUFFER_CONVERTIBLE_HPP_CFOQNR35
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#define BYTE_BUFFER_CONVERTIBLE_HPP_CFOQNR35
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#include <vanetza/common/byte_buffer.hpp>
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#include <cstddef>
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#include <memory>
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#include <string>
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#include <type_traits>
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namespace vanetza
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{
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namespace convertible
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{
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struct byte_buffer
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{
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virtual void convert(ByteBuffer&) const = 0;
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virtual std::size_t size() const = 0;
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virtual std::unique_ptr<byte_buffer> duplicate() const;
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virtual ~byte_buffer() {}
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};
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template<class T>
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struct byte_buffer_impl;
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template<>
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struct byte_buffer_impl<ByteBuffer> : public byte_buffer
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{
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byte_buffer_impl(ByteBuffer&& buffer) : m_buffer(std::move(buffer)) {}
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void convert(ByteBuffer& buf) const override { buf = m_buffer; }
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std::size_t size() const override { return m_buffer.size(); }
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ByteBuffer m_buffer;
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};
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template<>
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struct byte_buffer_impl<std::unique_ptr<ByteBuffer>> : public byte_buffer
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{
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byte_buffer_impl(std::unique_ptr<ByteBuffer> buf) :
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m_buffer(std::move(buf)) {}
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void convert(ByteBuffer& buf) const override { buf = *m_buffer; }
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std::size_t size() const override { return m_buffer->size(); }
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std::unique_ptr<ByteBuffer> m_buffer;
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};
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template<>
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struct byte_buffer_impl<std::string> : public byte_buffer
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{
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byte_buffer_impl(const std::string& str);
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byte_buffer_impl(std::string&& str);
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void convert(ByteBuffer& buffer) const override;
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std::size_t size() const override;
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std::string m_buffer;
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};
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template<>
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struct byte_buffer_impl<std::nullptr_t> : public byte_buffer
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{
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void convert(ByteBuffer& buffer) const override { buffer.clear(); }
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std::size_t size() const override { return 0; }
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std::unique_ptr<byte_buffer> duplicate() const override;
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};
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} // namespace convertible
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/**
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* ByteBufferConvertible is an extensible mechanism for providing
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* ByteBuffer representations of various data structures and objects.
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*
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* ByteBufferConvertible utilizes type erasure and accesses byte buffer data
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* through the convertible::byte_buffer interface.
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* Extending ByteBufferConvertible is possible by providing specializations
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* of convertible::byte_buffer_impl<T> implementing convertible::byte_buffer.
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*/
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class ByteBufferConvertible
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{
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public:
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ByteBufferConvertible() :
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m_wrapper(new convertible::byte_buffer_impl<std::nullptr_t>()) {}
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ByteBufferConvertible(std::unique_ptr<convertible::byte_buffer> ptr) :
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m_wrapper(std::move(ptr)) {}
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template<class T>
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ByteBufferConvertible(T&& t) :
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m_wrapper(new convertible::byte_buffer_impl<typename std::decay<T>::type>(std::forward<T>(t))) {}
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ByteBufferConvertible(const ByteBufferConvertible&);
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ByteBufferConvertible& operator=(const ByteBufferConvertible&);
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ByteBufferConvertible(ByteBufferConvertible&& other) = default;
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ByteBufferConvertible& operator=(ByteBufferConvertible&& other) = default;
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void convert(ByteBuffer& destination) const { m_wrapper->convert(destination); }
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std::size_t size() const { return m_wrapper->size(); }
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const convertible::byte_buffer* ptr() const { return m_wrapper.get(); }
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convertible::byte_buffer* ptr() { return m_wrapper.get(); }
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private:
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std::unique_ptr<convertible::byte_buffer> m_wrapper;
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};
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} // namespace vanetza
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#endif /* BYTE_BUFFER_CONVERTIBLE_HPP_CFOQNR35 */
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