Add m-esr52 at 52.6.0

1 files changed, 95 insertions, 0 deletions

diff --git a/js/src/vm/DateObject.h b/js/src/vm/DateObject.h
new file mode 100644
index 000000000..682823765
--- /dev/null
+++ b/js/src/vm/DateObject.h
@@ -0,0 +1,95 @@
+/* -*- 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_