/* 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 builtin_WeakMapObject_h
#define builtin_WeakMapObject_h

#include "gc/WeakMap.h"
#include "vm/NativeObject.h"

namespace js {

// Abstract base class for WeakMapObject and WeakSetObject.
class WeakCollectionObject : public NativeObject {
 public:
  enum { DataSlot, SlotCount };

  using Map = WeakMap<Value, Value, BufferAllocPolicy>;
  Map* getMap() { return maybePtrFromReservedSlot<Map>(DataSlot); }

  size_t sizeOfExcludingThis(mozilla::MallocSizeOf mallocSizeOf);

  size_t nondeterministicGetSize();
  [[nodiscard]] static bool nondeterministicGetKeys(
      JSContext* cx, Handle<WeakCollectionObject*> obj,
      MutableHandleObject ret);

 protected:
  static const JSClassOps classOps_;

  static void trace(JSTracer* trc, JSObject* obj);
  static void finalize(JS::GCContext* gcx, JSObject* obj);
};

class WeakMapObject : public WeakCollectionObject {
 public:
  static const JSClass class_;
  static const JSClass protoClass_;

  [[nodiscard]] static bool has(JSContext* cx, unsigned argc, Value* vp);
  [[nodiscard]] static bool get(JSContext* cx, unsigned argc, Value* vp);
  [[nodiscard]] static bool set(JSContext* cx, unsigned argc, Value* vp);

  static void getObject(WeakMapObject* weakMap, JSObject* obj, Value* result);
  static bool hasObject(WeakMapObject* weakMap, JSObject* obj);

 private:
  static const ClassSpec classSpec_;

  static const JSPropertySpec properties[];
  static const JSFunctionSpec methods[];

  [[nodiscard]] static bool construct(JSContext* cx, unsigned argc, Value* vp);

  [[nodiscard]] static bool tryOptimizeCtorWithIterable(
      JSContext* cx, Handle<WeakMapObject*> obj, Handle<Value> iterableVal,
      bool* optimized);

  [[nodiscard]] static MOZ_ALWAYS_INLINE bool is(HandleValue v);

  [[nodiscard]] static MOZ_ALWAYS_INLINE bool has_impl(JSContext* cx,
                                                       const CallArgs& args);
  [[nodiscard]] static MOZ_ALWAYS_INLINE bool get_impl(JSContext* cx,
                                                       const CallArgs& args);
  [[nodiscard]] static MOZ_ALWAYS_INLINE bool delete_impl(JSContext* cx,
                                                          const CallArgs& args);
  [[nodiscard]] static bool delete_(JSContext* cx, unsigned argc, Value* vp);
  [[nodiscard]] static MOZ_ALWAYS_INLINE bool set_impl(JSContext* cx,
                                                       const CallArgs& args);
  [[nodiscard]] static MOZ_ALWAYS_INLINE bool getOrInsert_impl(
      JSContext* cx, const CallArgs& args);
  [[nodiscard]] static bool getOrInsert(JSContext* cx, unsigned argc,
                                        Value* vp);
};

}  // namespace js

#endif /* builtin_WeakMapObject_h */