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// Copyright 2021 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef INCLUDE_V8_EXTERNAL_H_
#define INCLUDE_V8_EXTERNAL_H_

#include "v8-value.h"  // NOLINT(build/include_directory)
#include "v8config.h"  // NOLINT(build/include_directory)

namespace v8 {

class Isolate;

/**
 * A JavaScript value that wraps a C++ void*. This type of value is mainly used
 * to associate C++ data structures with JavaScript objects.
 */
class V8_EXPORT External : public Value {
 public:
  static Local<External> New(Isolate* isolate, void* value);
  V8_INLINE static External* Cast(Value* value) {
#ifdef V8_ENABLE_CHECKS
    CheckCast(value);
#endif
    return static_cast<External*>(value);
  }

  void* Value() const;

 private:
  static void CheckCast(v8::Value* obj);
};

}  // namespace v8

#endif  // INCLUDE_V8_EXTERNAL_H_