gecko-dev/dom/bindings/Date.cpp

60 строки
1.4 KiB
C++

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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/. */
#include "mozilla/dom/Date.h"
#include "jsapi.h" // for JS_ObjectIsDate, JS_NewDateObjectMsec
#include "jsfriendapi.h" // for js_DateGetMsecSinceEpoch
#include "js/RootingAPI.h" // for Rooted, MutableHandle
#include "js/Value.h" // for Value
#include "jswrapper.h" // for CheckedUnwrap
#include "mozilla/FloatingPoint.h" // for IsNaN, UnspecifiedNaN
namespace mozilla {
namespace dom {
Date::Date()
: mMsecSinceEpoch(UnspecifiedNaN<double>())
{
}
bool
Date::IsUndefined() const
{
return IsNaN(mMsecSinceEpoch);
}
bool
Date::SetTimeStamp(JSContext* aCx, JSObject* aObject)
{
JS::Rooted<JSObject*> obj(aCx, aObject);
MOZ_ASSERT(JS_ObjectIsDate(aCx, obj));
obj = js::CheckedUnwrap(obj);
// This really sucks: even if JS_ObjectIsDate, CheckedUnwrap can _still_ fail.
if (!obj) {
return false;
}
mMsecSinceEpoch = js_DateGetMsecSinceEpoch(obj);
return true;
}
bool
Date::ToDateObject(JSContext* aCx, JS::MutableHandle<JS::Value> aRval) const
{
JSObject* obj = JS_NewDateObjectMsec(aCx, mMsecSinceEpoch);
if (!obj) {
return false;
}
aRval.setObject(*obj);
return true;
}
} // namespace dom
} // namespace mozilla