gecko-dev/dom/bindings/Date.h

/* -*- 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/. */

/* Representation for dates. */

#ifndef mozilla_dom_Date_h
#define mozilla_dom_Date_h

#include "js/Date.h"
#include "js/TypeDecls.h"

namespace mozilla {
namespace dom {

class Date {
 public:
  Date() {}
  explicit Date(JS::ClippedTime aMilliseconds)
      : mMsecSinceEpoch(aMilliseconds) {}

  bool IsUndefined() const { return !mMsecSinceEpoch.isValid(); }

  JS::ClippedTime TimeStamp() const { return mMsecSinceEpoch; }

  // Returns an integer in the range [-8.64e15, +8.64e15] (-0 excluded), *or*
  // returns NaN.  DO NOT ASSUME THIS IS FINITE!
  double ToDouble() const { return mMsecSinceEpoch.toDouble(); }

  void SetTimeStamp(JS::ClippedTime aMilliseconds) {
    mMsecSinceEpoch = aMilliseconds;
  }

  // Can return false if unboxing fails.  This will NOT throw;
  // callers should do it as needed.
  bool SetTimeStamp(JSContext* aCx, JSObject* aObject);

  bool ToDateObject(JSContext* aCx, JS::MutableHandle<JS::Value> aRval) const;

 private:
  JS::ClippedTime mMsecSinceEpoch;
};

}  // namespace dom
}  // namespace mozilla

#endif  // mozilla_dom_Date_h