/* 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/. */

#ifndef vm_StencilObject_h
#define vm_StencilObject_h

#include "mozilla/RefPtr.h"  // RefPtr

#include <stddef.h>  // size_t
#include <stdint.h>  // uint8_t

#include "js/Class.h"                   // JSClassOps, JSClass
#include "js/experimental/JSStencil.h"  // JS::Stencil
#include "js/TypeDecls.h"
#include "vm/NativeObject.h"  // NativeObject

class JSObject;

namespace js {

// Object that holds JS::Stencil.
//
// This is a testing-only feature which can only be produced by testing
// functions.
class StencilObject : public NativeObject {
  static constexpr size_t StencilSlot = 0;
  static constexpr size_t ReservedSlots = 1;

 public:
  static const JSClassOps classOps_;
  static const JSClass class_;

  bool hasStencil() const;
  JS::Stencil* stencil() const;

  static StencilObject* create(JSContext* cx, RefPtr<JS::Stencil> stencil);
  static void finalize(JS::GCContext* gcx, JSObject* obj);
};

// Object that holds Stencil XDR buffer.
//
// This is a testing-only feature which can only be produced by testing
// functions.
class StencilXDRBufferObject : public NativeObject {
  static constexpr size_t BufferSlot = 0;
  static constexpr size_t LengthSlot = 1;
  static constexpr size_t ReservedSlots = 2;

 public:
  static const JSClassOps classOps_;
  static const JSClass class_;

  bool hasBuffer() const;
  const uint8_t* buffer() const;
  size_t bufferLength() const;

 private:
  uint8_t* writableBuffer();

 public:
  static StencilXDRBufferObject* create(JSContext* cx, uint8_t* buffer,
                                        size_t length);
  static void finalize(JS::GCContext* gcx, JSObject* obj);
};

} /* namespace js */

#endif /* vm_StencilObject_h */