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LibUnicode: Parse and generate scientific formatting rules

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Timothy Flynn 2021-11-14 08:35:10 -05:00 • committed by Linus Groh
parent b019a7fe64
commit 30fbb7d9cd
2 changed files with 20 additions and 0 deletions
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19
Meta/Lagom/Tools/CodeGenerators/LibUnicode/GenerateUnicodeNumberFormat.cpp
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@ -70,6 +70,7 @@ struct NumberSystem {
Vector<NumberFormat> currency_short_formats {};
NumberFormat percent_format {};
NumberFormat scientific_format {};
};
struct Locale {
@ -94,6 +95,7 @@ static void parse_number_pattern(String pattern, UnicodeLocaleData& locale_data,
{ "+"sv, "{plusSign}"sv },
{ "-"sv, "{minusSign}"sv },
{ "¤"sv, "{currency}"sv }, // U+00A4 Currency Sign
{ "E"sv, "{scientificSeparator}"sv },
};
for (auto const& replacement : replacements)
@ -129,6 +131,11 @@ static void parse_number_pattern(String pattern, UnicodeLocaleData& locale_data,
pattern = String::formatted("{}{{number}}{}",
*start_number_index > 0 ? pattern.substring_view(0, *start_number_index) : ""sv,
pattern.substring_view(end_number_index));
// This is specifically handled here rather than in the replacements HashMap above so
// that we do not errantly replace zeroes in number patterns.
if (pattern.contains(*replacements.get("E"sv)))
pattern = pattern.replace("0"sv, "{scientificExponent}"sv);
}
return pattern;
@ -212,6 +219,7 @@ static void parse_number_systems(String locale_numbers_path, UnicodeLocaleData&
constexpr auto decimal_formats_prefix = "decimalFormats-numberSystem-"sv;
constexpr auto currency_formats_prefix = "currencyFormats-numberSystem-"sv;
constexpr auto percent_formats_prefix = "percentFormats-numberSystem-"sv;
constexpr auto scientific_formats_prefix = "scientificFormats-numberSystem-"sv;
if (key.starts_with(symbols_prefix)) {
auto system = key.substring(symbols_prefix.length());
@ -258,6 +266,12 @@ static void parse_number_systems(String locale_numbers_path, UnicodeLocaleData&
auto format_object = value.as_object().get("standard"sv);
parse_number_pattern(format_object.as_string(), locale_data, number_system.percent_format);
} else if (key.starts_with(scientific_formats_prefix)) {
auto system = key.substring(scientific_formats_prefix.length());
auto& number_system = ensure_number_system(system);
auto format_object = value.as_object().get("standard"sv);
parse_number_pattern(format_object.as_string(), locale_data, number_system.scientific_format);
}
});
}
@ -402,6 +416,7 @@ struct NumberSystem {
Span<NumberFormat const> currency_short_formats {};
NumberFormat percent_format {};
NumberFormat scientific_format {};
};
)~~~");
@ -486,6 +501,8 @@ static constexpr Array<NumberSystem, @size@> @name@ { {)~~~");
append_number_format(number_system.value.accounting_format);
generator.append(" @currency_unit_formats@.span(), @currency_short_formats@.span(), ");
append_number_format(number_system.value.percent_format);
generator.append(" ");
append_number_format(number_system.value.scientific_format);
generator.append(" },");
}
@ -559,6 +576,8 @@ Optional<Unicode::NumberFormat> get_standard_number_system_format(StringView loc
return number_system->accounting_format.to_unicode_number_format();
case StandardNumberFormatType::Percent:
return number_system->percent_format.to_unicode_number_format();
case StandardNumberFormatType::Scientific:
return number_system->scientific_format.to_unicode_number_format();
}
}