fmtlib/fmt
1
0
Fork 1
mirror of https://github.com/fmtlib/fmt.git synced 2025-11-27 12:49:46 +01:00
Code Issues Packages Projects Releases Wiki Activity

Optimize common case

Browse Source
This commit is contained in:
Victor Zverovich
2020-06-15 18:13:40 -07:00
parent 7431165f38
commit 397ad1bec3
3 changed files with 21 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

19
include/fmt/format-inl.h
View File

@@ -1365,7 +1365,26 @@ FMT_FUNC void report_system_error(int error_code,
report_error(format_system_error, error_code, message);
}
struct stringifier {
template <typename T> FMT_INLINE std::string operator()(T value) const {
return to_string(value);
}
std::string operator()(basic_format_arg<format_context>::handle h) const {
memory_buffer buf;
internal::buffer<char>& base = buf;
format_parse_context parse_ctx({});
format_context format_ctx(std::back_inserter(base), {}, {});
h.format(parse_ctx, format_ctx);
return to_string(buf);
}
};
FMT_FUNC std::string detail::vformat(string_view format_str, format_args args) {
if (format_str.size() == 2 && equal2(format_str.data(), "{}")) {
auto arg = args.get(0);
if (!arg) error_handler().on_error("argument not found");
return visit_format_arg(stringifier(), arg);
}
memory_buffer buffer;
detail::vformat_to(buffer, format_str, args);
return to_string(buffer);