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spdlog: fmt - support std::span in to_hex

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`std::span` does not have `const_iterator`. this prevents `to_hex` from
being used with `std::span<>`. to fix this, we provide an explicit
overload.

compare: https://cplusplus.github.io/LWG/issue3320
This commit is contained in:
Tim Blechmann 2021-12-30 09:39:45 +08:00
parent cc30229abb
commit 626efad307
1 changed files with 21 additions and 0 deletions
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21
include/spdlog/fmt/bin_to_hex.h
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@ -8,6 +8,14 @@
#include <cctype> #include <cctype>
#include <spdlog/common.h> #include <spdlog/common.h>
#if defined(__has_include) && __has_include(<version>)
#include <version>
#endif
#if __cpp_lib_span >= 202002L
#include <span>
#endif
// //
// Support for logging binary data as hex // Support for logging binary data as hex
// format flags, any combination of the following: // format flags, any combination of the following:
@ -68,6 +76,19 @@ inline details::dump_info<typename Container::const_iterator> to_hex(const Conta
return details::dump_info<Iter>(std::begin(container), std::end(container), size_per_line); return details::dump_info<Iter>(std::begin(container), std::end(container), size_per_line);
} }
#if __cpp_lib_span >= 202002L
template <typename Value, size_t Extent>
inline details::dump_info<typename std::span<Value, Extent>::iterator> to_hex(const std::span<Value, Extent> &container, size_t size_per_line = 32)
{
using Container = std::span<Value, Extent>;
static_assert(sizeof(typename Container::value_type) == 1, "sizeof(Container::value_type) != 1");
using Iter = typename Container::iterator;
return details::dump_info<Iter>(std::begin(container), std::end(container), size_per_line);
}
#endif
// create dump_info from ranges // create dump_info from ranges
template<typename It> template<typename It>
inline details::dump_info<It> to_hex(const It range_begin, const It range_end, size_t size_per_line = 32) inline details::dump_info<It> to_hex(const It range_begin, const It range_end, size_t size_per_line = 32)