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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 be3// found in the LICENSE file.4 5#ifndef INCLUDE_V8_DATA_H_6#define INCLUDE_V8_DATA_H_7 8#include "v8-local-handle.h"  // NOLINT(build/include_directory)9#include "v8config.h"         // NOLINT(build/include_directory)10 11namespace v8 {12 13class Context;14 15/**16 * The superclass of objects that can reside on V8's heap.17 */18class V8_EXPORT Data {19 public:20  /**21   * Returns true if this data is a |v8::Value|.22   */23  bool IsValue() const;24 25  /**26   * Returns true if this data is a |v8::Module|.27   */28  bool IsModule() const;29 30  /**31   * Returns true if this data is a |v8::ModuleRequest|.32   */33  bool IsModuleRequest() const;34 35  /**36   * Returns tru if this data is a |v8::FixedArray|37   */38  bool IsFixedArray() const;39 40  /**41   * Returns true if this data is a |v8::Private|.42   */43  bool IsPrivate() const;44 45  /**46   * Returns true if this data is a |v8::ObjectTemplate|.47   */48  bool IsObjectTemplate() const;49 50  /**51   * Returns true if this data is a |v8::FunctionTemplate|.52   */53  bool IsFunctionTemplate() const;54 55  /**56   * Returns true if this data is a |v8::Context|.57   */58  bool IsContext() const;59 60 private:61  Data() = delete;62};63 64/**65 * A fixed-sized array with elements of type Data.66 */67class V8_EXPORT FixedArray : public Data {68 public:69  int Length() const;70  Local<Data> Get(Local<Context> context, int i) const;71 72  V8_INLINE static FixedArray* Cast(Data* data) {73#ifdef V8_ENABLE_CHECKS74    CheckCast(data);75#endif76    return reinterpret_cast<FixedArray*>(data);77  }78 79 private:80  static void CheckCast(Data* obj);81};82 83}  // namespace v884 85#endif  // INCLUDE_V8_DATA_H_86