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); Cast(Value * 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_ 38