1 files changed, 95 insertions, 0 deletions
diff --git a/Source/JavaScriptCore/runtime/DateInstance.cpp b/Source/JavaScriptCore/runtime/DateInstance.cpp
new file mode 100644
index 000000000..e095f882c
--- /dev/null
+++ b/Source/JavaScriptCore/runtime/DateInstance.cpp
@@ -0,0 +1,95 @@
+/*
+ *  Copyright (C) 1999-2000 Harri Porten (porten@kde.org)
+ *  Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
+ *
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Lesser General Public
+ *  License as published by the Free Software Foundation; either
+ *  version 2 of the License, or (at your option) any later version.
+ *
+ *  This library is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ *  Lesser General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Lesser General Public
+ *  License along with this library; if not, write to the Free Software
+ *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301
+ *  USA
+ *
+ */
+
+#include "config.h"
+#include "DateInstance.h"
+
+#include "JSDateMath.h"
+#include "JSGlobalObject.h"
+#include "JSCInlines.h"
+#include <math.h>
+#include <wtf/MathExtras.h>
+
+using namespace WTF;
+
+namespace JSC {
+
+const ClassInfo DateInstance::s_info = {"Date", &JSWrapperObject::s_info, 0, CREATE_METHOD_TABLE(DateInstance)};
+
+DateInstance::DateInstance(VM& vm, Structure* structure)
+    : JSWrapperObject(vm, structure)
+{
+}
+
+void DateInstance::finishCreation(VM& vm)
+{
+    Base::finishCreation(vm);
+    ASSERT(inherits(info()));
+    setInternalValue(vm, jsNaN());
+}
+
+void DateInstance::finishCreation(VM& vm, double time)
+{
+    Base::finishCreation(vm);
+    ASSERT(inherits(info()));
+    setInternalValue(vm, jsNumber(timeClip(time)));
+}
+
+void DateInstance::destroy(JSCell* cell)
+{
+    static_cast<DateInstance*>(cell)->DateInstance::~DateInstance();
+}
+
+const GregorianDateTime* DateInstance::calculateGregorianDateTime(ExecState* exec) const
+{
+    double milli = internalNumber();
+    if (std::isnan(milli))
+        return 0;
+
+    VM& vm = exec->vm();
+    if (!m_data)
+        m_data = vm.dateInstanceCache.add(milli);
+
+    if (m_data->m_gregorianDateTimeCachedForMS != milli) {
+        msToGregorianDateTime(vm, milli, WTF::LocalTime, m_data->m_cachedGregorianDateTime);
+        m_data->m_gregorianDateTimeCachedForMS = milli;
+    }
+    return &m_data->m_cachedGregorianDateTime;
+}
+
+const GregorianDateTime* DateInstance::calculateGregorianDateTimeUTC(ExecState* exec) const
+{
+    double milli = internalNumber();
+    if (std::isnan(milli))
+        return 0;
+
+    VM& vm = exec->vm();
+    if (!m_data)
+        m_data = vm.dateInstanceCache.add(milli);
+
+    if (m_data->m_gregorianDateTimeUTCCachedForMS != milli) {
+        msToGregorianDateTime(vm, milli, WTF::UTCTime, m_data->m_cachedGregorianDateTimeUTC);
+        m_data->m_gregorianDateTimeUTCCachedForMS = milli;
+    }
+    return &m_data->m_cachedGregorianDateTimeUTC;
+}
+
+} // namespace JSC