js/src/vm/NumberObject.h

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
   2  * vim: set ts=8 sts=2 et sw=2 tw=80:
   3  * This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #ifndef vm_NumberObject_h
   8 #define vm_NumberObject_h
   9
  10 #include "vm/NativeObject.h"
  11
  12 namespace js {
  13
  14 class NumberObject : public NativeObject {
  15   /* Stores this Number object's [[PrimitiveValue]]. */
  16   static const unsigned PRIMITIVE_VALUE_SLOT = 0;
  17
  18   static const ClassSpec classSpec_;
  19
  20  public:
  21   static const unsigned RESERVED_SLOTS = 1;
  22
  23   static const JSClass class_;
  24
  25   /*
  26    * Creates a new Number object boxing the given number.
  27    * If proto is nullptr, then Number.prototype will be used instead.
  28    */
  29   static inline NumberObject* create(JSContext* cx, double d,
  30                                      HandleObject proto = nullptr);
  31
  32   double unbox() const { return getFixedSlot(PRIMITIVE_VALUE_SLOT).toNumber(); }
  33
  34  private:
  35   static JSObject* createPrototype(JSContext* cx, JSProtoKey key);
  36
  37   inline void setPrimitiveValue(double d) {
  38     setFixedSlot(PRIMITIVE_VALUE_SLOT, NumberValue(d));
  39   }
  40 };
  41
  42 }  // namespace js
  43
  44 #endif /* vm_NumberObject_h */