| // Copyright 2017 the V8 project authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef V8_BASE_TIMEZONE_CACHE_H_ |
| #define V8_BASE_TIMEZONE_CACHE_H_ |
| |
| namespace v8 { |
| namespace base { |
| |
| class TimezoneCache { |
| public: |
| // Short name of the local timezone (e.g., EST) |
| virtual const char* LocalTimezone(double time_ms) = 0; |
| |
| // ES #sec-daylight-saving-time-adjustment |
| // Daylight Saving Time Adjustment |
| virtual double DaylightSavingsOffset(double time_ms) = 0; |
| |
| // ES #sec-local-time-zone-adjustment |
| // Local Time Zone Adjustment |
| // |
| // TODO(littledan): Make more accurate with another parameter along the |
| // lines of this spec change: |
| // https://github.com/tc39/ecma262/pull/778 |
| virtual double LocalTimeOffset() = 0; |
| |
| // Called when the local timezone changes |
| virtual void Clear() = 0; |
| |
| // Called when tearing down the isolate |
| virtual ~TimezoneCache() {} |
| }; |
| |
| } // namespace base |
| } // namespace v8 |
| |
| #endif // V8_BASE_TIMEZONE_CACHE_H_ |