1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
|
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
* 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_
|
