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Refactor pointer formatting

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This commit is contained in:
Victor Zverovich
2020-05-03 20:33:25 -07:00
parent 9cc7edfddc
commit bab3f58003
2 changed files with 21 additions and 16 deletions
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27
include/fmt/format.h
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@@ -1577,6 +1577,21 @@ template <typename OutputIt, typename Char, typename UInt> struct int_writer {
}
};
template <typename Char, typename OutputIt, typename UIntPtr>
OutputIt write_ptr(OutputIt out, UIntPtr value,
const basic_format_specs<Char>* specs) {
int num_digits = count_digits<4>(value);
auto size = to_unsigned(num_digits) + size_t(2);
using iterator = remove_reference_t<decltype(reserve(out, 0))>;
auto write = [=](iterator it) {
*it++ = static_cast<Char>('0');
*it++ = static_cast<Char>('x');
return format_uint<4, Char>(it, value, num_digits);
};
return specs ? write_padded<align::right>(out, *specs, size, write)
: base_iterator(out, write(reserve(out, size)));
}
// This template provides operations for formatting and writing data into a
// character range.
template <typename Range> class basic_writer {
@@ -1742,17 +1757,7 @@ template <typename Range> class basic_writer {
template <typename UIntPtr>
void write_pointer(UIntPtr value, const format_specs* specs) {
int num_digits = count_digits<4>(value);
auto size = to_unsigned(num_digits) + size_t(2);
auto write = [=](reserve_iterator it) {
*it++ = static_cast<char_type>('0');
*it++ = static_cast<char_type>('x');
return format_uint<4, char_type>(it, value, num_digits);
};
if (!specs) return void(write(reserve(size)));
format_specs specs_copy = *specs;
if (specs_copy.align == align::none) specs_copy.align = align::right;
out_ = write_padded(out_, specs_copy, size, write);
out_ = write_ptr<char_type>(out_, value, specs);
}
};