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Move copy_str for format.h

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This commit is contained in:
Victor Zverovich 2024-01-03 09:05:09 -08:00
parent 4687f8e37e
commit 61f144bd61
2 changed files with 37 additions and 35 deletions
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38
include/fmt/core.h
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@ -809,23 +809,6 @@ class compile_parse_context : public basic_format_parse_context<Char> {
}
};
template <typename Char, typename InputIt, typename OutputIt>
FMT_CONSTEXPR auto copy_str(InputIt begin, InputIt end, OutputIt out)
-> OutputIt {
while (begin != end) *out++ = static_cast<Char>(*begin++);
return out;
}
template <typename Char, typename T, typename U,
FMT_ENABLE_IF(
std::is_same<remove_const_t<T>, U>::value&& is_char<U>::value)>
FMT_CONSTEXPR auto copy_str(T* begin, T* end, U* out) -> U* {
if (is_constant_evaluated()) return copy_str<Char, T*, U*>(begin, end, out);
auto size = to_unsigned(end - begin);
if (size > 0) memcpy(out, begin, size * sizeof(U));
return out + size;
}
/**
\rst
A contiguous memory buffer with an optional growing ability. It is an internal
@ -954,7 +937,9 @@ class iterator_buffer final : public Traits, public buffer<T> {
void flush() {
auto size = this->size();
this->clear();
out_ = copy_str<T>(data_, data_ + this->limit(size), out_);
const T* begin = data_;
const T* end = begin + this->limit(size);
while (begin != end) *out_++ = *begin++;
}
public:
@ -1542,23 +1527,6 @@ enum { max_packed_args = 62 / packed_arg_bits };
enum : unsigned long long { is_unpacked_bit = 1ULL << 63 };
enum : unsigned long long { has_named_args_bit = 1ULL << 62 };
template <typename Char, typename InputIt>
auto copy_str(InputIt begin, InputIt end, appender out) -> appender {
get_container(out).append(begin, end);
return out;
}
template <typename Char, typename InputIt>
auto copy_str(InputIt begin, InputIt end, back_insert_iterator<std::string> out)
-> back_insert_iterator<std::string> {
get_container(out).append(begin, end);
return out;
}
template <typename Char, typename R, typename OutputIt>
FMT_CONSTEXPR auto copy_str(R&& rng, OutputIt out) -> OutputIt {
return detail::copy_str<Char>(rng.begin(), rng.end(), out);
}
#if FMT_GCC_VERSION && FMT_GCC_VERSION < 500
// A workaround for gcc 4.8 to make void_t work in a SFINAE context.
template <typename...> struct void_t_impl {

34
include/fmt/format.h
View File

@ -517,6 +517,40 @@ inline auto get_container(std::back_insert_iterator<Container> it)
return *accessor(it).container;
}
template <typename Char, typename InputIt, typename OutputIt>
FMT_CONSTEXPR auto copy_str(InputIt begin, InputIt end, OutputIt out)
-> OutputIt {
while (begin != end) *out++ = static_cast<Char>(*begin++);
return out;
}
template <typename Char, typename T, typename U,
FMT_ENABLE_IF(
std::is_same<remove_const_t<T>, U>::value&& is_char<U>::value)>
FMT_CONSTEXPR auto copy_str(T* begin, T* end, U* out) -> U* {
if (is_constant_evaluated()) return copy_str<Char, T*, U*>(begin, end, out);
auto size = to_unsigned(end - begin);
if (size > 0) memcpy(out, begin, size * sizeof(U));
return out + size;
}
template <typename Char, typename InputIt>
auto copy_str(InputIt begin, InputIt end, appender out) -> appender {
get_container(out).append(begin, end);
return out;
}
template <typename Char, typename InputIt>
auto copy_str(InputIt begin, InputIt end, back_insert_iterator<std::string> out)
-> back_insert_iterator<std::string> {
get_container(out).append(begin, end);
return out;
}
template <typename Char, typename R, typename OutputIt>
FMT_CONSTEXPR auto copy_str(R&& rng, OutputIt out) -> OutputIt {
return detail::copy_str<Char>(rng.begin(), rng.end(), out);
}
// An approximation of iterator_t for pre-C++20 systems.
template <typename T>
using iterator_t = decltype(std::begin(std::declval<T&>()));