KeqingMoe/argparse
1
0
Fork 0
mirror of https://github.com/KeqingMoe/argparse.git synced 2025-07-04 07:04:39 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

Merge pull request #123 from skrobinson/rev-chars_format-update

Browse Source 
Revert "Use std::chars_format rather than local copy"
This commit is contained in:
Pranav 2021-08-27 06:52:07 -05:00 committed by GitHub
commit 8af52044cf
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 21 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

35
include/argparse/argparse.hpp
View File

@ -167,6 +167,13 @@ constexpr bool starts_with(std::basic_string_view<CharT, Traits> prefix,
return s.substr(0, prefix.size()) == prefix;
}
enum class chars_format {
scientific = 0x1,
fixed = 0x2,
hex = 0x4,
general = fixed | scientific
};
struct consume_hex_prefix_result {
bool is_hexadecimal;
std::string_view rest;
@ -258,46 +265,46 @@ template <class T> inline auto do_strtod(std::string const &s) -> T {
}
}
template <class T> struct parse_number<T, std::chars_format::general> {
template <class T> struct parse_number<T, chars_format::general> {
auto operator()(std::string const &s) -> T {
if (auto r = consume_hex_prefix(s); r.is_hexadecimal)
throw std::invalid_argument{
"std::chars_format::general does not parse hexfloat"};
"chars_format::general does not parse hexfloat"};
return do_strtod<T>(s);
}
};
template <class T> struct parse_number<T, std::chars_format::hex> {
template <class T> struct parse_number<T, chars_format::hex> {
auto operator()(std::string const &s) -> T {
if (auto r = consume_hex_prefix(s); !r.is_hexadecimal)
throw std::invalid_argument{"std::chars_format::hex parses hexfloat"};
throw std::invalid_argument{"chars_format::hex parses hexfloat"};
return do_strtod<T>(s);
}
};
template <class T> struct parse_number<T, std::chars_format::scientific> {
template <class T> struct parse_number<T, chars_format::scientific> {
auto operator()(std::string const &s) -> T {
if (auto r = consume_hex_prefix(s); r.is_hexadecimal)
throw std::invalid_argument{
"std::chars_format::scientific does not parse hexfloat"};
"chars_format::scientific does not parse hexfloat"};
if (s.find_first_of("eE") == s.npos)
throw std::invalid_argument{
"std::chars_format::scientific requires exponent part"};
"chars_format::scientific requires exponent part"};
return do_strtod<T>(s);
}
};
template <class T> struct parse_number<T, std::chars_format::fixed> {
template <class T> struct parse_number<T, chars_format::fixed> {
auto operator()(std::string const &s) -> T {
if (auto r = consume_hex_prefix(s); r.is_hexadecimal)
throw std::invalid_argument{
"std::chars_format::fixed does not parse hexfloat"};
"chars_format::fixed does not parse hexfloat"};
if (s.find_first_of("eE") != s.npos)
throw std::invalid_argument{
"std::chars_format::fixed does not parse exponent part"};
"chars_format::fixed does not parse exponent part"};
return do_strtod<T>(s);
}
@ -397,16 +404,16 @@ public:
action(details::parse_number<T, 16>());
else if constexpr (is_one_of(Shape, 'a', 'A') &&
std::is_floating_point_v<T>)
action(details::parse_number<T, std::chars_format::hex>());
action(details::parse_number<T, details::chars_format::hex>());
else if constexpr (is_one_of(Shape, 'e', 'E') &&
std::is_floating_point_v<T>)
action(details::parse_number<T, std::chars_format::scientific>());
action(details::parse_number<T, details::chars_format::scientific>());
else if constexpr (is_one_of(Shape, 'f', 'F') &&
std::is_floating_point_v<T>)
action(details::parse_number<T, std::chars_format::fixed>());
action(details::parse_number<T, details::chars_format::fixed>());
else if constexpr (is_one_of(Shape, 'g', 'G') &&
std::is_floating_point_v<T>)
action(details::parse_number<T, std::chars_format::general>());
action(details::parse_number<T, details::chars_format::general>());
else
static_assert(alignof(T) == 0, "No scan specification for T");