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The C and C++ Include Header Files

/usr/include/node/v8-external.h

$ cat -n /usr/include/node/v8-external.h

     1	// Copyright 2021 the V8 project authors. All rights reserved.
     2	// Use of this source code is governed by a BSD-style license that can be
     3	// found in the LICENSE file.
     4	
     5	#ifndef INCLUDE_V8_EXTERNAL_H_
     6	#define INCLUDE_V8_EXTERNAL_H_
     7	
     8	#include "v8-value.h"  // NOLINT(build/include_directory)
     9	#include "v8config.h"  // NOLINT(build/include_directory)
    10	
    11	namespace v8 {
    12	
    13	class Isolate;
    14	
    15	/**
    16	 * A JavaScript value that wraps a C++ void*. This type of value is mainly used
    17	 * to associate C++ data structures with JavaScript objects.
    18	 */
    19	class V8_EXPORT External : public Value {
    20	 public:
    21	  static Local<External> New(Isolate* isolate, void* value);
    22	  V8_INLINE static External* Cast(Value* value) {
    23	#ifdef V8_ENABLE_CHECKS
    24	    CheckCast(value);
    25	#endif
    26	    return static_cast<External*>(value);
    27	  }
    28	
    29	  void* Value() const;
    30	
    31	 private:
    32	  static void CheckCast(v8::Value* obj);
    33	};
    34	
    35	}  // namespace v8
    36	
    37	#endif  // INCLUDE_V8_EXTERNAL_H_

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