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mcc_epoch.h: fix operator=(std::chrono::time_point)

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class MccKeyValueHolder: developing ...
This commit is contained in:
Timur A. Fatkhullin
2026-05-17 22:33:31 +03:00
parent 3dbe4c12b7
commit 9630751a4d
3 changed files with 108 additions and 91 deletions
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16
include/mcc/mcc_epoch.h
View File

@@ -79,10 +79,10 @@ public:
template <typename ClockT, typename DurT>
MccCelestialCoordEpoch& operator=(std::chrono::time_point<ClockT, DurT>&& tp)
MccCelestialCoordEpoch& operator=(std::chrono::time_point<ClockT, DurT> const& tp)
{
// ignore possible errors!!!
auto ok = fromTimePoint(std::forward<decltype(tp)>(tp));
auto ok = fromTimePoint(tp);
return *this;
}
@@ -139,17 +139,17 @@ public:
}
template <typename ClockT, typename DurT>
bool fromTimePoint(std::chrono::time_point<ClockT, DurT>&& tp)
bool fromTimePoint(std::chrono::time_point<ClockT, DurT> const& tp)
{
if constexpr (std::same_as<ClockT, std::chrono::system_clock>) {
_UTC = std::chrono::time_point_cast<decltype(_UTC)::duration>(std::forward<decltype(tp)>(tp));
_UTC = std::chrono::time_point_cast<decltype(_UTC)::duration>(tp);
} else if constexpr (std::same_as<ClockT, std::chrono::utc_clock>) {
auto stp = std::chrono::utc_clock::to_sys(std::forward<decltype(tp)>(tp));
_UTC = std::chrono::time_point_cast<decltype(_UTC)::duration>(std::forward<decltype(tp)>(stp));
auto stp = std::chrono::utc_clock::to_sys(tp);
_UTC = std::chrono::time_point_cast<decltype(_UTC)::duration>(stp);
} else if constexpr (std::same_as<ClockT, std::chrono::tai_clock>) {
return fromTimePoint(ClockT::to_utc(std::forward<decltype(tp)>(tp)));
return fromTimePoint(ClockT::to_utc(tp));
} else if constexpr (std::same_as<ClockT, std::chrono::gps_clock>) {
return fromTimePoint(ClockT::to_utc(std::forward<decltype(tp)>(tp)));
return fromTimePoint(ClockT::to_utc(tp));
} else {
static_assert(false, "UNSUPPORTED CLOCK!!!");
}

121
include/mcc/mcc_keyvalue.h
View File

@@ -12,8 +12,8 @@
#include <unordered_map>
#include <unordered_set>
#include "mcc_constants.h"
#include "mcc_deserializer.h"
#include "mcc_serializer.h"
#include "mcc_utils.h"
@@ -100,6 +100,7 @@ concept mcc_keyvalue_record_c = requires(T t) {
};
// must be a std::tuple of mcc_keyvalue_record_c
template <typename T>
concept mcc_keyvalue_desc_c = requires(T t) { []<mcc_keyvalue_record_c... Ts>(std::tuple<Ts...>) {}(t); };
@@ -134,12 +135,23 @@ public:
: ARR_DELIM[0] == '\0' ? constants::MCC_KV_VALUE_ARRAY_DELIM_SEQ_ARR
: ARR_DELIM};
static constexpr size_t NUMBER_OF_RECORDS = std::tuple_size_v<DESCR_T>;
MccKeyValueHolder(DESCR_T desc) : _keyValue(desc)
{
[this]<size_t... I>(std::index_sequence<I...>) {
((_hashes[I] = utils::FNV1aHash(std::get<I>(_keyValue).key)), ...);
}(std::make_index_sequence<std::tuple_size_v<DESCR_T>>());
}(std::make_index_sequence<NUMBER_OF_RECORDS>());
_loadedKey.insert_range(_hashes);
}
constexpr std::array<std::string_view, NUMBER_OF_RECORDS> keys() const
{
return [this]<size_t... Is>(std::index_sequence<Is...>) {
return std::array<std::string_view, NUMBER_OF_RECORDS>{std::get<Is>(_keyValue).key...};
}(std::make_index_sequence<NUMBER_OF_RECORDS>{});
}
@@ -181,43 +193,24 @@ public:
template <typename T>
std::error_code setValue(std::string_view key, const T& value)
{
using r_t = std::invoke_result_t<decltype(std::chrono::system_clock::now)>;
// static_assert(std::convertible_to<r_t, MccCelestialCoordEpoch>);
// static_assert(std::assignable_from<MccCelestialCoordEpoch, r_t>);
// static_assert(std::constructible_from<MccCelestialCoordEpoch, r_t>);
// static_assert(std::destructible<MccCelestialCoordEpoch>);
return forKey(key, [value, key]<typename VT>(VT& val) -> std::error_code {
if constexpr (requires(std::decay_t<VT> v) { v = value; }) {
return forKey(key, [&value, key]<typename VT>(VT& val) -> std::error_code {
// std::println("FORKEY_FUN: {} = {}", key, value);
if constexpr (requires(VT v) { v = value; }) {
val = value;
} else if constexpr (std::convertible_to<T, VT>) {
val = value;
} else if constexpr (std::constructible_from<VT, T>) {
val = VT(value);
} else if constexpr (std::assignable_from<VT, T>) {
val = value;
} else {
return MccKeyValueHolderErrorCode::ERROR_INCOMPATIBLE_TYPE;
}
std::println("FORKEY_FUN: {} = {}", key, value);
// if constexpr (std::convertible_to<T, VT>) {
// val = value;
// } else if constexpr (std::constructible_from<VT, T>) {
// val = VT(value);
// } else if constexpr (std::assignable_from<VT, T>) {
// val = value;
// } else {
// return MccKeyValueHolderErrorCode::ERROR_INCOMPATIBLE_TYPE;
// }
return MccKeyValueHolderErrorCode::ERROR_OK;
// if constexpr (std::convertible_to<T, VT>) {
// val = value;
// } else if constexpr (std::constructible_from<VT, T>) {
// val = VT(value);
// } else if constexpr (std::assignable_from<VT, T>) {
// val = value;
// } else {
// return MccKeyValueHolderErrorCode::ERROR_INCOMPATIBLE_TYPE;
// }
// return MccKeyValueHolderErrorCode::ERROR_OK;
});
}
template <traits::mcc_input_char_range R,
traits::mcc_input_char_range RecDelimT = std::string_view,
mcc_serialization_params_c SerParamsT = mcc_serialization_params_t>
@@ -240,9 +233,13 @@ public:
std::error_code ec{};
std::string_view rec, key, value, inline_comm;
std::vector<std::string> head_comm;
std::vector<std::optional<std::string>> head_comm;
size_t key_hash;
_headComment.clear();
_inlineComment.clear();
_loadedKey.clear();
auto recs = std::views::split(buffer, std::move(rec_delim));
for (auto const& el : recs) {
@@ -255,8 +252,7 @@ public:
inline_comm =
std::string_view{found.begin() + COMMENT_SEQ.size(), rec.end()}; // mark inline comment
} else { // head comment
head_comm.push_back({found.end(), rec.end()});
std::println("COMM: <{}>", head_comm.back());
head_comm.push_back(std::string{found.end(), rec.end()});
}
rec = std::string_view(rec.begin(), found.begin());
@@ -270,21 +266,14 @@ public:
key_hash = utils::FNV1aHash(key);
// ec = forKey(key, [value, &ser_params]<typename VT>(VT& v) {
// auto err = MccDeserializer<VT>{}(value, v, ser_params);
// if (err) {
// return MccKeyValueHolderErrorCode::ERROR_DESERIAL;
// }
// return MccKeyValueHolderErrorCode::ERROR_OK;
// });
ec = forHash(key_hash, [value, &ser_params]<typename VT>(VT& v) {
ec = forHash(key_hash, [&key_hash, value, &ser_params, this]<typename VT>(VT& v) {
auto err = MccDeserializer<VT>{}(value, v, ser_params);
if (err) {
return MccKeyValueHolderErrorCode::ERROR_DESERIAL;
}
_loadedKey.insert(key_hash);
return MccKeyValueHolderErrorCode::ERROR_OK;
});
@@ -303,8 +292,8 @@ public:
} // just comment string starting from the beginning, just skip it (no error)
} else { // empty record, just skip it (no error)
head_comm.push_back({el.begin(), el.end()});
std::println("EMPTY COMM: <{}>", head_comm.back());
// head_comm.push_back({el.begin(), el.end()});
head_comm.push_back(std::nullopt);
}
}
@@ -320,7 +309,9 @@ public:
{
std::error_code ec{};
auto write_rec = [&output_buffer, &rec_delim, &ec, &ser_params, this]<size_t I>() {
auto write_rec = [&output_buffer, &rec_delim, &ec, &ser_params, this]<size_t I = 0>(this auto& self) {
if constexpr (I < NUMBER_OF_RECORDS) {
if (_loadedKey.count(_hashes[I])) {
auto key = std::get<I>(_keyValue).key;
auto val = std::get<I>(_keyValue).value;
using val_t = std::remove_cvref_t<decltype(val)>;
@@ -329,34 +320,42 @@ public:
auto err = MccSerializer<val_t>{}(buff, val, ser_params);
if (err) {
ec = MccKeyValueHolderErrorCode::ERROR_SERIAL;
return;
} else {
size_t hash = _hashes[I];
// write head comment
if (_headComment[hash].size()) {
for (auto const& comm : _headComment[hash]) {
// if (comm.size()) {
std::format_to(std::back_inserter(output_buffer), "{}{}", COMM_SEQ, comm);
// }
if (comm.has_value()) {
std::format_to(std::back_inserter(output_buffer), "{}{}", COMM_SEQ, comm.value());
}
std::ranges::copy(rec_delim, std::back_inserter(output_buffer));
}
}
// key and value
std::format_to(std::back_inserter(output_buffer), "{}{}{}{}", rec_delim, key, KEY_VALUE_DELIM, buff);
std::format_to(std::back_inserter(output_buffer), "{}{}{}", key, KEY_VALUE_DELIM, buff);
// inline comment
if (_inlineComment[hash].size()) {
std::format_to(std::back_inserter(output_buffer), " {}{}", COMMENT_SEQ, _inlineComment[hash]);
std::format_to(std::back_inserter(output_buffer), " {}{}", COMMENT_SEQ,
_inlineComment[hash]);
}
// record delimiter
std::ranges::copy(rec_delim, std::back_inserter(output_buffer));
}
}
self.template operator()<I + 1>();
}
};
[&write_rec]<size_t... Is>(std::index_sequence<Is...>) {
(write_rec.template operator()<Is>(), ...);
}(std::make_index_sequence<std::tuple_size_v<DESCR_T>>());
write_rec();
// [&write_rec]<size_t... Is>(std::index_sequence<Is...>) {
// (write_rec.template operator()<Is>(), ...);
// }(std::make_index_sequence<NUMBER_OF_RECORDS>());
return ec;
}
@@ -364,9 +363,11 @@ public:
protected:
DESCR_T _keyValue;
std::array<size_t, std::tuple_size_v<DESCR_T>> _hashes; // key hashes
std::unordered_map<size_t, std::vector<std::string>> _headComment; // comment string/strings before key
std::unordered_map<size_t, std::string> _inlineComment; // inline (after key=value pair) comment
std::array<size_t, NUMBER_OF_RECORDS> _hashes{}; // key hashes
std::unordered_map<size_t, std::vector<std::optional<std::string>>>
_headComment{}; // comment string/strings before key
std::unordered_map<size_t, std::string> _inlineComment{}; // inline (after key=value pair) comment
std::unordered_set<size_t> _loadedKey{}; // loaded keys (see fromCharRange)
//
// NOTE: deduced this is needed here to use "forKey" method in getter and setter (const and non-const contexts)!!!
@@ -382,7 +383,7 @@ protected:
template <size_t I = 0>
std::error_code forHash(this auto&& self, size_t hash, auto&& func)
{
if constexpr (I < std::tuple_size_v<DESCR_T>) {
if constexpr (I < NUMBER_OF_RECORDS) {
if (hash == std::forward<decltype(self)>(self)._hashes[I]) {
return std::forward<decltype(func)>(func)(
std::get<I>(std::forward<decltype(self)>(self)._keyValue).value);

22
tests/mcc_keyvalue_test.cpp
View File

@@ -21,12 +21,22 @@ cc= 2026-05-15T05:53:20.921723918 # date UTC
)--";
static std::string STR1 = R"--(
aaa = dewl_ewkj23+23998
#
# this is obs date
cc= 2026-05-15T05:53:20.921723918 # date UTC
)--";
int main()
{
// MccKeyValueHolder<decltype(kv_desc)> kv(kv_desc);
MccKeyValueHolder kv(kv_desc);
auto err = kv.fromCharRange(STR);
// auto err = kv.fromCharRange(STR);
auto err = kv.fromCharRange(STR1);
if (err) {
std::println("ERR = {}", err);
return 1;
@@ -56,7 +66,13 @@ int main()
return 1;
}
std::println("{}", buff);
std::println("--(\n{}\n)--'", buff);
std::print("KEYS: ");
for (auto const& k : kv.keys()) {
std::print("{} ", k);
}
std::println("");
return 0;
}