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refactor: make namespace ranges mostly an alias of std::ranges

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Kittywhiskers Van Gogh 2024-11-01 16:02:27 +00:00
parent 4717fe8045
commit 0577b4d9de
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1 changed files with 9 additions and 29 deletions
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34
src/util/ranges.h
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@ -5,40 +5,20 @@
#ifndef BITCOIN_UTIL_RANGES_H
#define BITCOIN_UTIL_RANGES_H
#include <algorithm>
#include <ranges>
#include <optional>
//#if __cplusplus > 201703L // C++20 compiler
//namespace ranges = std::ranges;
//#else
#define MK_RANGE(FUN) \
template <typename X, typename Z> \
inline auto FUN(const X& ds, const Z& fn) { \
return std::FUN(cbegin(ds), cend(ds), fn); \
} \
template <typename X, typename Z> \
inline auto FUN(X& ds, const Z& fn) { \
return std::FUN(begin(ds), end(ds), fn); \
}
namespace ranges {
MK_RANGE(all_of)
MK_RANGE(any_of)
MK_RANGE(count_if)
MK_RANGE(find_if)
using namespace std::ranges;
template <typename X, typename Z>
constexpr inline auto find_if_opt(const X& ds, const Z& fn) {
const auto it = ranges::find_if(ds, fn);
if (it != end(ds)) {
template <typename X, typename Z>
constexpr inline auto find_if_opt(const X& ds, const Z& fn) {
const auto it = std::ranges::find_if(ds, fn);
if (it != std::end(ds)) {
return std::make_optional(*it);
}
return std::optional<std::decay_t<decltype(*it)>>{};
}
}
}
//#endif // C++20 compiler
#endif // BITCOIN_UTIL_RANGES_H