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1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 the V8 project authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef V8_DATE_H_ | 5 #ifndef V8_DATE_H_ |
6 #define V8_DATE_H_ | 6 #define V8_DATE_H_ |
7 | 7 |
8 #include "src/allocation.h" | 8 #include "src/allocation.h" |
9 #include "src/base/platform/platform.h" | 9 #include "src/base/platform/platform.h" |
10 #include "src/globals.h" | 10 #include "src/globals.h" |
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86 local_offset_ms_ = GetLocalOffsetFromOS(); | 86 local_offset_ms_ = GetLocalOffsetFromOS(); |
87 } | 87 } |
88 return local_offset_ms_; | 88 return local_offset_ms_; |
89 } | 89 } |
90 | 90 |
91 | 91 |
92 const char* LocalTimezone(int64_t time_ms) { | 92 const char* LocalTimezone(int64_t time_ms) { |
93 if (time_ms < 0 || time_ms > kMaxEpochTimeInMs) { | 93 if (time_ms < 0 || time_ms > kMaxEpochTimeInMs) { |
94 time_ms = EquivalentTime(time_ms); | 94 time_ms = EquivalentTime(time_ms); |
95 } | 95 } |
96 return base::OS::LocalTimezone(static_cast<double>(time_ms), tz_cache_); | 96 bool is_dst = DaylightSavingsOffsetInMs(time_ms) != 0; |
97 const char** name = is_dst ? &dst_tz_name_ : &tz_name_; | |
jgruber
2017/03/03 08:09:57
Nit: Can you use plain 'const char* name' instead
Dan Ehrenberg
2017/03/03 12:57:44
I don't think so, because then I don't see how I c
jgruber
2017/03/03 13:02:34
Ah, gotcha. sgtm.
| |
98 if (*name == nullptr) { | |
99 *name = base::OS::LocalTimezone(static_cast<double>(time_ms), tz_cache_); | |
100 } | |
101 return *name; | |
97 } | 102 } |
98 | 103 |
99 // ECMA 262 - 15.9.5.26 | 104 // ECMA 262 - 15.9.5.26 |
100 int TimezoneOffset(int64_t time_ms) { | 105 int TimezoneOffset(int64_t time_ms) { |
101 int64_t local_ms = ToLocal(time_ms); | 106 int64_t local_ms = ToLocal(time_ms); |
102 return static_cast<int>((time_ms - local_ms) / kMsPerMin); | 107 return static_cast<int>((time_ms - local_ms) / kMsPerMin); |
103 } | 108 } |
104 | 109 |
105 // ECMA 262 - 15.9.1.9 | 110 // ECMA 262 - 15.9.1.9 |
106 // LocalTime(t) = t + LocalTZA + DaylightSavingTA(t) | 111 // LocalTime(t) = t + LocalTZA + DaylightSavingTA(t) |
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270 | 275 |
271 int local_offset_ms_; | 276 int local_offset_ms_; |
272 | 277 |
273 // Year/Month/Day cache. | 278 // Year/Month/Day cache. |
274 bool ymd_valid_; | 279 bool ymd_valid_; |
275 int ymd_days_; | 280 int ymd_days_; |
276 int ymd_year_; | 281 int ymd_year_; |
277 int ymd_month_; | 282 int ymd_month_; |
278 int ymd_day_; | 283 int ymd_day_; |
279 | 284 |
285 // Timezone name cache | |
286 const char* tz_name_; | |
287 const char* dst_tz_name_; | |
288 | |
280 base::TimezoneCache* tz_cache_; | 289 base::TimezoneCache* tz_cache_; |
281 }; | 290 }; |
282 | 291 |
283 } // namespace internal | 292 } // namespace internal |
284 } // namespace v8 | 293 } // namespace v8 |
285 | 294 |
286 #endif | 295 #endif |
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