531 lines
13 KiB
C++
531 lines
13 KiB
C++
#pragma once
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#include <algorithm>
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#include <string>
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#include <vector>
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#include "../common/adc_traits.h"
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#include "../common/adc_utils.h"
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namespace adc
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{
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namespace utils {
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template<typename ByteStorageT, typename T, typename... Ts>
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void convertToBytes(ByteStorageT &res, const T &v, const Ts &...vs)
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{
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if constexpr (std::is_array_v<std::remove_cvref_t<T>>) { // to handle with trailing '\0' in plain char array
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convertToBytes(res, std::string_view(v), vs...);
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} else {
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if constexpr (traits::adc_input_char_range<T>) {
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std::ranges::copy(v, std::back_inserter(res));
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} else if constexpr (std::convertible_to<T, ByteStorageT>) {
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convertToBytes(res, static_cast<ByteStorageT>(v), vs...);
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} else if constexpr (traits::formattable<T>) {
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std::format_to(std::back_inserter(res), "{}", v);
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} else {
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static_assert(false, "UNSUPPORTED TYPE!!!");
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}
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}
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if constexpr (sizeof...(Ts)) {
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convertToBytes(res, vs...);
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}
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}
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} // namespace utils
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namespace traits {
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template<typename T>
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concept adc_netmessage_c = requires(const T t) { // const methods
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{ t.empty() } -> std::convertible_to<bool>;
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{ t.bytes() } -> adc_output_char_range;
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{ t.byteView() } -> adc_range_of_view_char_range;
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};
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} // namespace traits
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/*
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Trivial message interface:
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byte storage: just a char-range
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*/
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template<traits::adc_output_char_range ByteStorageT = std::string, traits::adc_char_view ByteViewT = std::string_view>
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class AdcNetMessageTrivialInterface
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{
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public:
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virtual ~AdcNetMessageTrivialInterface() = default;
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bool empty() const { return std::ranges::distance(_bytes.begin(), _bytes.end()) == 0; }
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// get a copy of message bytes
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template<traits::adc_output_char_range R>
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R bytes() const
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{
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R r;
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std::ranges::copy(_bytes, std::back_inserter(r));
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return r;
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}
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virtual ByteStorageT bytes() const
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{
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//
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return bytes<ByteStorageT>();
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}
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// get a view of message bytes
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template<traits::adc_range_of_view_char_range R>
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R bytesView() const
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{
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R r;
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r.emplace_back(_bytes.begin(), _bytes.end());
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return r;
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}
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std::vector<ByteViewT> bytesView() const
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{
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//
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return bytesView<std::vector<ByteViewT>>();
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}
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protected:
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ByteStorageT _bytes;
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AdcNetMessageTrivialInterface() = default;
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};
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/*
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interface for more complex messages:
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byte storage: std::vector of char-range (sequence of buffers)
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*/
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template<traits::adc_output_char_range ByteStorageT = std::string, traits::adc_char_view ByteViewT = std::string_view>
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class AdcNetMessageSeqInterface
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{
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public:
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virtual ~AdcNetMessageSeqInterface() = default;
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bool empty() const
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{
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if (_bytes.empty()) {
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return true;
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}
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bool emp = true;
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for (const auto &el : _bytes) {
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if (std::ranges::distance(el.begin(), el.end())) {
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emp = false;
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break;
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}
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}
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return emp;
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}
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// get a copy of message bytes
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template<traits::adc_output_char_range R>
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R bytes() const
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{
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R r;
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for (size_t i = 0; i < _bytes.size(); ++i) {
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std::ranges::for_each(storageViewByIndex(i),
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[&r](const auto &el) { std::ranges::copy(el, std::back_inserter(r)); });
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}
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return r;
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}
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virtual ByteStorageT bytes() const
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{
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//
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return bytes<ByteStorageT>();
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}
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// get a view of message bytes
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template<traits::adc_range_of_view_char_range R>
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R bytesView() const
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{
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R r;
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for (size_t i = 0; i < _bytes.size(); ++i) {
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std::ranges::for_each(storageViewByIndex(i), [&r](const auto &el) { r.emplace_back(el.begin(), el.end()); });
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}
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return r;
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}
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std::vector<ByteViewT> bytesView() const
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{
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//
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return bytesView<std::vector<ByteViewT>>();
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}
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protected:
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std::vector<ByteStorageT> _bytes;
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AdcNetMessageSeqInterface() = default;
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// return a sequence of storage element view and possible additional
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// byte views (e.g. elements delimiter)
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virtual std::vector<ByteViewT> storageViewByIndex(size_t) const = 0;
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};
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// Generic message class
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template <traits::adc_output_char_range ByteStorageT = std::string, traits::adc_char_view ByteViewT = std::string_view>
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class AdcGenericNetMessage : public AdcNetMessageTrivialInterface<ByteStorageT, ByteViewT>
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{
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using base_t = AdcNetMessageTrivialInterface<ByteStorageT, ByteViewT>;
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public:
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using base_t::base_t;
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using base_t::bytes;
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using base_t::bytesView;
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using base_t::empty;
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template<typename T, typename... Ts>
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AdcGenericNetMessage(const T &v, const Ts &...vs) : AdcGenericNetMessage()
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{
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appendBytes(v, vs...);
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}
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template <typename T, typename... Ts>
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void appendBytes(const T& v, const Ts&... vs)
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{
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utils::convertToBytes(this->_bytes, v, vs...);
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}
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template <typename T, typename... Ts>
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void setBytes(const T& v, const Ts&... vs)
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{
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this->_bytes = ByteStorageT();
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appendBytes(v, vs...);
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}
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template <std::input_iterator IT>
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void appendFromBytes(IT begin, IT end)
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requires std::same_as<std::iter_value_t<IT>, char>
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{
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std::copy(begin, end, std::back_inserter(this->_bytes));
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}
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template <std::input_iterator IT>
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void setFromBytes(IT begin, IT end)
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requires std::same_as<std::iter_value_t<IT>, char>
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{
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this->_bytes = ByteStorageT();
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appendFromBytes(begin, end);
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}
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};
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namespace constants
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{
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static constexpr char ADC_DEFAULT_TOKEN_DELIMITER[] = " ";
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static constexpr char ADC_DEFAULT_KEY_TOKEN_DELIMITER[] = " ";
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} // namespace constants
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template <const char* TOKEN_DELIM = constants::ADC_DEFAULT_TOKEN_DELIMITER,
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traits::adc_output_char_range ByteStorageT = std::string,
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traits::adc_char_view ByteViewT = std::string_view>
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class AdcTokenNetMessage : public AdcNetMessageSeqInterface<ByteStorageT, ByteViewT>
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{
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// AdcNetMessageSeqInterface<ByteStorageT, ByteViewT>::_bytes - tokens
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using base_t = AdcNetMessageSeqInterface<ByteStorageT, ByteViewT>;
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public:
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static constexpr std::string_view tokenDelimiter{TOKEN_DELIM};
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using base_t::bytesView;
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using base_t::bytes;
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using base_t::empty;
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AdcTokenNetMessage() = default;
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template <typename T, typename... Ts>
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AdcTokenNetMessage(const T& v, const Ts&... vs) : AdcTokenNetMessage()
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{
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setTokens(v, vs...);
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}
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virtual ~AdcTokenNetMessage() = default;
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template <std::ranges::output_range<ByteStorageT> R>
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R tokens(size_t start = 0, size_t N = std::numeric_limits<size_t>::max()) const
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{
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R r;
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if (empty()) {
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return r;
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}
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std::ranges::copy(this->_bytes | std::views::drop(start) | std::views::take(N), std::back_inserter(r));
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return r;
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}
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std::vector<ByteStorageT> tokens(size_t start = 0, size_t N = std::numeric_limits<size_t>::max()) const
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{
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//
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return tokens<std::vector<ByteStorageT>>(start, N);
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}
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template <typename T, typename... Ts>
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void appendTokens(const T& v, const Ts&... vs)
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{
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if constexpr (traits::adc_input_char_range<T> || traits::formattable<T>) {
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utils::convertToBytes(this->_bytes.emplace_back(), v);
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} else if constexpr (std::ranges::input_range<T>) {
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using el_t = std::ranges::range_value_t<T>;
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static_assert(traits::adc_input_char_range<el_t> || traits::formattable<el_t>,
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"INVALID TYPE OF INPUT TOKENS!!!");
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if (std::ranges::distance(v.begin(), v.end())) {
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for (const auto& el : v) {
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utils::convertToBytes(this->_bytes.emplace_back(), el);
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}
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}
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} else {
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static_assert(false, "UNSUPPORTED (CANNOT BE SERIALIZED TO BYTES) TYPE OF INPUT TOKENS!!!");
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}
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if constexpr (sizeof...(Ts)) {
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appendTokens(vs...);
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}
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}
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template <typename T, typename... Ts>
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void setTokens(const T& v, const Ts&... vs)
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{
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this->_bytes.clear();
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appendTokens(v, vs...);
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}
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template <std::input_iterator IT>
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void appendFromBytes(IT begin, IT end)
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requires std::same_as<std::iter_value_t<IT>, char>
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{
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auto it = begin, start_it = begin;
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do {
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it = std::search(start_it, end, tokenDelimiter.begin(), tokenDelimiter.end());
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std::copy(start_it, it, std::back_inserter(this->_bytes.emplace_back()));
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start_it = it;
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std::advance(start_it, tokenDelimiter.size()); // to support not only random-access iterators
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} while (it != end);
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}
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template <std::input_iterator IT>
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void setFromBytes(IT begin, IT end)
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requires std::same_as<std::iter_value_t<IT>, char>
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{
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this->_bytes.clear();
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appendFromBytes(begin, end);
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}
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protected:
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virtual std::vector<ByteViewT> storageViewByIndex(size_t idx) const override
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{
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const ByteStorageT &el = this->_bytes[idx];
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std::vector<ByteViewT> vw{{el.begin(), el.end()}};
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auto last_idx = this->_bytes.size() - 1;
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if (idx < last_idx) { // add delimiter
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vw.emplace_back(tokenDelimiter.begin(), tokenDelimiter.end());
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}
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return vw;
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}
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};
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// special type of tokenized message:
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// the first token is keyword
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// the other - just tokens
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// delimiter between keyword and other tokens may differ from token-to-token one
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template <const char* KEY_TOKEN_DELIM = constants::ADC_DEFAULT_KEY_TOKEN_DELIMITER,
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const char* TOKEN_DELIM = constants::ADC_DEFAULT_TOKEN_DELIMITER,
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traits::adc_output_char_range ByteStorageT = std::string,
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traits::adc_char_view ByteViewT = std::string_view>
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class AdcKeyTokenNetMessage : public AdcTokenNetMessage<TOKEN_DELIM, ByteStorageT, ByteViewT>
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{
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using base_t = AdcTokenNetMessage<TOKEN_DELIM, ByteStorageT, ByteViewT>;
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public:
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static constexpr std::string_view keytokenDelimiter{KEY_TOKEN_DELIM};
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using base_t::appendTokens;
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using base_t::setTokens;
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using base_t::tokens;
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using base_t::appendFromBytes; // append only tokens not keyword
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using base_t::bytesView;
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using base_t::bytes;
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using base_t::empty;
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AdcKeyTokenNetMessage() = default;
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template<typename KT, typename T, typename... Ts>
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AdcKeyTokenNetMessage(const KT &key, const T &tok, const Ts &...toks)
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{
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utils::convertToBytes(this->_bytes.emplace_back(), key);
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setTokens(tok, toks...);
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}
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virtual ~AdcKeyTokenNetMessage() = default;
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template <traits::adc_output_char_range R>
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R keyBytes() const
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{
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R r;
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if (empty()) {
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return r;
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}
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std::ranges::copy(this->_bytes[0], r);
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return r;
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}
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ByteStorageT keyBytes() const
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{
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if (empty()) {
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return ByteStorageT();
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}
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return this->_bytes[0];
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}
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template <traits::adc_char_view R>
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R keyView() const
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{
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if (empty()) {
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return R();
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}
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return R{this->_bytes[0].begin(), this->_bytes[0].end()};
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}
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ByteViewT keyView() const
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{
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if (empty()) {
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return ByteViewT();
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}
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return ByteViewT{this->_bytes[0].begin(), this->_bytes[0].end()};
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}
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template<std::ranges::output_range<ByteStorageT> R>
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R tokens(size_t start = 0, size_t N = std::numeric_limits<size_t>::max()) const
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{
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// "+1" since the first element is keyword
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return base_t::template tokens<R>(start + 1, N);
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}
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std::vector<ByteStorageT> tokens(size_t start = 0, size_t N = std::numeric_limits<size_t>::max()) const
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{
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//
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return tokens<std::vector<ByteStorageT>>(start, N);
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}
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template<typename KT, typename T, typename... Ts>
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void setKeyTokens(const KT &key, const T &tok, const Ts &...toks)
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{
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this->_bytes.clear();
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utils::convertToBytes(this->_bytes.emplace_back(), key);
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appendTokens(tok, toks...);
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}
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template <typename T, typename... Ts>
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void setTokens(const T& v, const Ts&... vs)
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{
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this->_bytes.resize(1); // the first element is keyword
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appendTokens(v, vs...);
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}
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template<std::input_iterator IT>
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void setFromBytes(IT begin, IT end)
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requires std::same_as<std::iter_value_t<IT>, char>
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{
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this->_bytes.clear();
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auto it = std::search(begin, end, keytokenDelimiter.begin(), keytokenDelimiter.end());
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std::copy(begin, it, std::back_inserter(this->_bytes.emplace_back())); // keyword
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if (it != end) {
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std::advance(it, keytokenDelimiter.size());
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appendFromBytes(it, end); // tokens
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}
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}
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protected:
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virtual std::vector<ByteViewT> storageViewByIndex(size_t idx) const override
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{
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if (idx == 0) { // the first element is keyword
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const ByteStorageT &el = this->_bytes[idx];
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std::vector<ByteViewT> vw{{el.begin(), el.end()}};
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if (this->_bytes.size() > 1) { // there are tokens, so add keyword-to-tokens delimiter
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vw.emplace_back(keytokenDelimiter.begin(), keytokenDelimiter.end());
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}
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return vw;
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} else {
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return base_t::storageViewByIndex(idx);
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}
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}
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};
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} // namespace adc
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