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LibTimeZone+LibUnicode: Generate string data with run-length encoding

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Currently, the unique string lists are stored in the initialized data
sections of their shared libraries. In order to move the data to the
read-only section, generate the strings using RLE arrays.

We generate two arrays: the first is the RLE data itself, the second is
a list of indices into the RLE array for each string. We then generate a
decoding method to convert an RLE string to a StringView.
This commit is contained in:
Timothy Flynn 2022-08-15 13:01:42 -04:00 • committed by Andreas Kling
parent de980de0e4
commit becec3578f
6 changed files with 138 additions and 59 deletions
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38
Meta/Lagom/Tools/CodeGenerators/LibUnicode/GenerateUnicodeDateTimeFormat.cpp
View file

@ -1811,10 +1811,10 @@ struct CalendarPatternImpl {
CalendarPattern to_unicode_calendar_pattern() const {
CalendarPattern calendar_pattern {};
calendar_pattern.skeleton = s_string_list[skeleton];
calendar_pattern.pattern = s_string_list[pattern];
calendar_pattern.skeleton = decode_string(skeleton);
calendar_pattern.pattern = decode_string(pattern);
if (pattern12 != 0)
calendar_pattern.pattern12 = s_string_list[pattern12];
calendar_pattern.pattern12 = decode_string(pattern12);
convert_calendar_fields(*this, calendar_pattern);
return calendar_pattern;
@ -1843,9 +1843,9 @@ struct CalendarRangePatternImpl {
if (field != -1)
calendar_range_pattern.field = static_cast<CalendarRangePattern::Field>(field);
calendar_range_pattern.start_range = s_string_list[start_range];
calendar_range_pattern.separator = s_string_list[separator];
calendar_range_pattern.end_range = s_string_list[end_range];
calendar_range_pattern.start_range = decode_string(start_range);
calendar_range_pattern.separator = decode_string(separator);
calendar_range_pattern.end_range = decode_string(end_range);
convert_calendar_fields(*this, calendar_range_pattern);
return calendar_range_pattern;
@ -1929,12 +1929,12 @@ struct TimeZoneFormatImpl {
TimeZoneFormat to_time_zone_format() const {
TimeZoneFormat time_zone_format {};
time_zone_format.symbol_ahead_sign = s_string_list[symbol_ahead_sign];
time_zone_format.symbol_ahead_separator = s_string_list[symbol_ahead_separator];
time_zone_format.symbol_behind_sign = s_string_list[symbol_behind_sign];
time_zone_format.symbol_behind_separator = s_string_list[symbol_behind_separator];
time_zone_format.gmt_format = s_string_list[gmt_format];
time_zone_format.gmt_zero_format = s_string_list[gmt_zero_format];
time_zone_format.symbol_ahead_sign = decode_string(symbol_ahead_sign);
time_zone_format.symbol_ahead_separator = decode_string(symbol_ahead_separator);
time_zone_format.symbol_behind_sign = decode_string(symbol_behind_sign);
time_zone_format.symbol_behind_separator = decode_string(symbol_behind_separator);
time_zone_format.gmt_format = decode_string(gmt_format);
time_zone_format.gmt_zero_format = decode_string(gmt_zero_format);
return time_zone_format;
}
@ -2200,7 +2200,7 @@ Vector<CalendarRangePattern> get_calendar_range_formats(StringView locale, Strin
for (auto format : range_formats) {
auto const& pattern = s_calendar_range_patterns[format];
if (skeleton == s_string_list[pattern.skeleton])
if (skeleton == decode_string(pattern.skeleton))
result.append(pattern.to_unicode_calendar_range_pattern());
}
}
@ -2218,7 +2218,7 @@ Vector<CalendarRangePattern> get_calendar_range12_formats(StringView locale, Str
for (auto format : range12_formats) {
auto const& pattern = s_calendar_range_patterns[format];
if (skeleton == s_string_list[pattern.skeleton])
if (skeleton == decode_string(pattern.skeleton))
result.append(pattern.to_unicode_calendar_range_pattern());
}
}
@ -2263,7 +2263,7 @@ Optional<StringView> get_calendar_era_symbol(StringView locale, StringView calen
if (auto value_index = to_underlying(value); value_index < symbols.size()) {
if (auto symbol_index = symbols.at(value_index); symbol_index != 0)
return s_string_list[symbol_index];
return decode_string(symbol_index);
}
return {};
@ -2275,7 +2275,7 @@ Optional<StringView> get_calendar_month_symbol(StringView locale, StringView cal
if (auto value_index = to_underlying(value); value_index < symbols.size()) {
if (auto symbol_index = symbols.at(value_index); symbol_index != 0)
return s_string_list[symbol_index];
return decode_string(symbol_index);
}
return {};
@ -2287,7 +2287,7 @@ Optional<StringView> get_calendar_weekday_symbol(StringView locale, StringView c
if (auto value_index = to_underlying(value); value_index < symbols.size()) {
if (auto symbol_index = symbols.at(value_index); symbol_index != 0)
return s_string_list[symbol_index];
return decode_string(symbol_index);
}
return {};
@ -2299,7 +2299,7 @@ Optional<StringView> get_calendar_day_period_symbol(StringView locale, StringVie
if (auto value_index = to_underlying(value); value_index < symbols.size()) {
if (auto symbol_index = symbols.at(value_index); symbol_index != 0)
return s_string_list[symbol_index];
return decode_string(symbol_index);
}
return {};
@ -2400,7 +2400,7 @@ Optional<StringView> get_time_zone_name(StringView locale, StringView time_zone,
}
if (name_index != 0)
return s_string_list[name_index];
return decode_string(name_index);
}
return {};