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-rw-r--r--Meta/Lagom/Tools/CodeGenerators/LibTimeZone/GenerateTimeZoneData.cpp38
1 files changed, 36 insertions, 2 deletions
diff --git a/Meta/Lagom/Tools/CodeGenerators/LibTimeZone/GenerateTimeZoneData.cpp b/Meta/Lagom/Tools/CodeGenerators/LibTimeZone/GenerateTimeZoneData.cpp
index 99ee761edd..46efbe016a 100644
--- a/Meta/Lagom/Tools/CodeGenerators/LibTimeZone/GenerateTimeZoneData.cpp
+++ b/Meta/Lagom/Tools/CodeGenerators/LibTimeZone/GenerateTimeZoneData.cpp
@@ -33,6 +33,10 @@ struct DateTime {
struct TimeZoneOffset {
i64 offset { 0 };
Optional<DateTime> until;
+
+ Optional<String> dst_rule;
+ Optional<i32> dst_rule_index;
+ i64 dst_offset { 0 };
};
struct DaylightSavingsOffset {
@@ -76,10 +80,12 @@ struct AK::Formatter<TimeZoneOffset> : Formatter<FormatString> {
ErrorOr<void> format(FormatBuilder& builder, TimeZoneOffset const& time_zone_offset)
{
return Formatter<FormatString>::format(builder,
- "{{ {}, {}, {} }}",
+ "{{ {}, {}, {}, {}, {} }}",
time_zone_offset.offset,
time_zone_offset.until.value_or({}),
- time_zone_offset.until.has_value());
+ time_zone_offset.until.has_value(),
+ time_zone_offset.dst_rule_index.value_or(-1),
+ time_zone_offset.dst_offset);
}
};
@@ -158,6 +164,14 @@ static i64 parse_time_offset(StringView segment)
return (hours * 3600) + sign * ((minutes * 60) + seconds);
}
+static void parse_dst_rule(StringView segment, TimeZoneOffset& time_zone)
+{
+ if (segment.contains(':'))
+ time_zone.dst_offset = parse_time_offset(segment);
+ else if (segment != "-"sv)
+ time_zone.dst_rule = segment;
+}
+
static Vector<TimeZoneOffset>& parse_zone(StringView zone_line, TimeZoneData& time_zone_data)
{
auto segments = zone_line.split_view_if([](char ch) { return (ch == '\t') || (ch == ' '); });
@@ -168,6 +182,7 @@ static Vector<TimeZoneOffset>& parse_zone(StringView zone_line, TimeZoneData& ti
TimeZoneOffset time_zone {};
time_zone.offset = parse_time_offset(segments[2]);
+ parse_dst_rule(segments[3], time_zone);
if (segments.size() > 5)
time_zone.until = parse_date_time(segments.span().slice(5));
@@ -188,6 +203,7 @@ static void parse_zone_continuation(StringView zone_line, Vector<TimeZoneOffset>
// STDOFF RULES FORMAT [UNTIL]
TimeZoneOffset time_zone {};
time_zone.offset = parse_time_offset(segments[0]);
+ parse_dst_rule(segments[1], time_zone);
if (segments.size() > 3)
time_zone.until = parse_date_time(segments.span().slice(3));
@@ -265,6 +281,19 @@ static ErrorOr<void> parse_time_zones(StringView time_zone_path, TimeZoneData& t
return {};
}
+static void set_dst_rule_indices(TimeZoneData& time_zone_data)
+{
+ for (auto& time_zone : time_zone_data.time_zones) {
+ for (auto& time_zone_offset : time_zone.value) {
+ if (!time_zone_offset.dst_rule.has_value())
+ continue;
+
+ auto dst_rule_index = time_zone_data.dst_offset_names.find_first_index(*time_zone_offset.dst_rule);
+ time_zone_offset.dst_rule_index = static_cast<i32>(dst_rule_index.value());
+ }
+ }
+}
+
static String format_identifier(StringView owner, String identifier)
{
constexpr auto gmt_time_zones = Array { "Etc/GMT"sv, "GMT"sv };
@@ -318,6 +347,8 @@ static void generate_time_zone_data_implementation(Core::File& file, TimeZoneDat
StringBuilder builder;
SourceGenerator generator { builder };
+ set_dst_rule_indices(time_zone_data);
+
generator.append(R"~~~(
#include <AK/Array.h>
#include <AK/BinarySearch.h>
@@ -355,6 +386,9 @@ struct TimeZoneOffset {
DateTime until {};
bool has_until { false };
+
+ i32 dst_rule { -1 };
+ i64 dst_offset { 0 };
};
struct DaylightSavingsOffset {