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 
unbox()32   double unbox() const { return getFixedSlot(PRIMITIVE_VALUE_SLOT).toNumber(); }
33 
34  private:
35   static JSObject* createPrototype(JSContext* cx, JSProtoKey key);
36 
setPrimitiveValue(double d)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 */
45