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_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 tru if this data is a |v8::FixedArray|
32   */
33  bool IsFixedArray() const;
34
35  /**
36   * Returns true if this data is a |v8::Private|.
37   */
38  bool IsPrivate() const;
39
40  /**
41   * Returns true if this data is a |v8::ObjectTemplate|.
42   */
43  bool IsObjectTemplate() const;
44
45  /**
46   * Returns true if this data is a |v8::FunctionTemplate|.
47   */
48  bool IsFunctionTemplate() const;
49
50  /**
51   * Returns true if this data is a |v8::Context|.
52   */
53  bool IsContext() const;
54
55 private:
56  Data() = delete;
57};
58
59/**
60 * A fixed-sized array with elements of type Data.
61 */
62class V8_EXPORT FixedArray : public Data {
63 public:
64  int Length() const;
65  Local<Data> Get(Local<Context> context, int i) const;
66
67  V8_INLINE static FixedArray* Cast(Data* data) {
68#ifdef V8_ENABLE_CHECKS
69    CheckCast(data);
70#endif
71    return reinterpret_cast<FixedArray*>(data);
72  }
73
74 private:
75  static void CheckCast(Data* obj);
76};
77
78}  // namespace v8
79
80#endif  // INCLUDE_V8_DATA_H_
81