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-rw-r--r--js/src/vm/DateObject.h95
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diff --git a/js/src/vm/DateObject.h b/js/src/vm/DateObject.h
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+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ * vim: set ts=8 sts=4 et sw=4 tw=99:
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef vm_DateObject_h_
+#define vm_DateObject_h_
+
+#include "jsobj.h"
+
+#include "js/Date.h"
+#include "js/Value.h"
+
+namespace js {
+
+class DateObject : public NativeObject
+{
+ static const uint32_t UTC_TIME_SLOT = 0;
+ static const uint32_t TZA_SLOT = 1;
+
+ /*
+ * Cached slots holding local properties of the date.
+ * These are undefined until the first actual lookup occurs
+ * and are reset to undefined whenever the date's time is modified.
+ */
+ static const uint32_t COMPONENTS_START_SLOT = 2;
+
+ static const uint32_t LOCAL_TIME_SLOT = COMPONENTS_START_SLOT + 0;
+ static const uint32_t LOCAL_YEAR_SLOT = COMPONENTS_START_SLOT + 1;
+ static const uint32_t LOCAL_MONTH_SLOT = COMPONENTS_START_SLOT + 2;
+ static const uint32_t LOCAL_DATE_SLOT = COMPONENTS_START_SLOT + 3;
+ static const uint32_t LOCAL_DAY_SLOT = COMPONENTS_START_SLOT + 4;
+
+ /*
+ * Unlike the above slots that hold LocalTZA-adjusted component values,
+ * LOCAL_SECONDS_INTO_YEAR_SLOT holds a composite value that can be used
+ * to compute LocalTZA-adjusted hours, minutes, and seconds values.
+ * Specifically, LOCAL_SECONDS_INTO_YEAR_SLOT holds the number of
+ * LocalTZA-adjusted seconds into the year. Unix timestamps ignore leap
+ * seconds, so recovering hours/minutes/seconds requires only trivial
+ * division/modulus operations.
+ */
+ static const uint32_t LOCAL_SECONDS_INTO_YEAR_SLOT = COMPONENTS_START_SLOT + 5;
+
+ static const uint32_t RESERVED_SLOTS = LOCAL_SECONDS_INTO_YEAR_SLOT + 1;
+
+ public:
+ static const Class class_;
+ static const Class protoClass_;
+
+ JS::ClippedTime clippedTime() const {
+ double t = getFixedSlot(UTC_TIME_SLOT).toDouble();
+ JS::ClippedTime clipped = JS::TimeClip(t);
+ MOZ_ASSERT(mozilla::NumbersAreIdentical(clipped.toDouble(), t));
+ return clipped;
+ }
+
+ const js::Value& UTCTime() const {
+ return getFixedSlot(UTC_TIME_SLOT);
+ }
+
+ // Set UTC time to a given time and invalidate cached local time.
+ void setUTCTime(JS::ClippedTime t);
+ void setUTCTime(JS::ClippedTime t, MutableHandleValue vp);
+
+ inline double cachedLocalTime();
+
+ // Cache the local time, year, month, and so forth of the object.
+ // If UTC time is not finite (e.g., NaN), the local time
+ // slots will be set to the UTC time without conversion.
+ void fillLocalTimeSlots();
+
+ static MOZ_ALWAYS_INLINE bool getTime_impl(JSContext* cx, const CallArgs& args);
+ static MOZ_ALWAYS_INLINE bool getYear_impl(JSContext* cx, const CallArgs& args);
+ static MOZ_ALWAYS_INLINE bool getFullYear_impl(JSContext* cx, const CallArgs& args);
+ static MOZ_ALWAYS_INLINE bool getUTCFullYear_impl(JSContext* cx, const CallArgs& args);
+ static MOZ_ALWAYS_INLINE bool getMonth_impl(JSContext* cx, const CallArgs& args);
+ static MOZ_ALWAYS_INLINE bool getUTCMonth_impl(JSContext* cx, const CallArgs& args);
+ static MOZ_ALWAYS_INLINE bool getDate_impl(JSContext* cx, const CallArgs& args);
+ static MOZ_ALWAYS_INLINE bool getUTCDate_impl(JSContext* cx, const CallArgs& args);
+ static MOZ_ALWAYS_INLINE bool getDay_impl(JSContext* cx, const CallArgs& args);
+ static MOZ_ALWAYS_INLINE bool getUTCDay_impl(JSContext* cx, const CallArgs& args);
+ static MOZ_ALWAYS_INLINE bool getHours_impl(JSContext* cx, const CallArgs& args);
+ static MOZ_ALWAYS_INLINE bool getUTCHours_impl(JSContext* cx, const CallArgs& args);
+ static MOZ_ALWAYS_INLINE bool getMinutes_impl(JSContext* cx, const CallArgs& args);
+ static MOZ_ALWAYS_INLINE bool getUTCMinutes_impl(JSContext* cx, const CallArgs& args);
+ static MOZ_ALWAYS_INLINE bool getUTCSeconds_impl(JSContext* cx, const CallArgs& args);
+ static MOZ_ALWAYS_INLINE bool getUTCMilliseconds_impl(JSContext* cx, const CallArgs& args);
+ static MOZ_ALWAYS_INLINE bool getTimezoneOffset_impl(JSContext* cx, const CallArgs& args);
+};
+
+} // namespace js
+
+#endif // vm_DateObject_h_