1// Copyright 2015 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/**
6 * This header contains a set of experimental V8 APIs. We hope these will
7 * become a part of standard V8, but they may also be removed if we deem the
8 * experiment to not be successul.
9 */
10#ifndef V8_INCLUDE_V8_EXPERIMENTAL_H_
11#define V8_INCLUDE_V8_EXPERIMENTAL_H_
12
13#include "v8.h"  // NOLINT(build/include)
14
15namespace v8 {
16namespace experimental {
17
18// Allow the embedder to construct accessors that V8 can compile and use
19// directly, without jumping into the runtime.
20class V8_EXPORT FastAccessorBuilder {
21 public:
22  struct ValueId {
23    size_t value_id;
24  };
25  struct LabelId {
26    size_t label_id;
27  };
28
29  static FastAccessorBuilder* New(Isolate* isolate);
30
31  ValueId IntegerConstant(int int_constant);
32  ValueId GetReceiver();
33  ValueId LoadInternalField(ValueId value_id, int field_no);
34  ValueId LoadInternalFieldUnchecked(ValueId value_id, int field_no);
35  ValueId LoadValue(ValueId value_id, int offset);
36  ValueId LoadObject(ValueId value_id, int offset);
37  ValueId ToSmi(ValueId value_id);
38
39  void ReturnValue(ValueId value_id);
40  void CheckFlagSetOrReturnNull(ValueId value_id, int mask);
41  void CheckNotZeroOrReturnNull(ValueId value_id);
42  LabelId MakeLabel();
43  void SetLabel(LabelId label_id);
44  void Goto(LabelId label_id);
45  void CheckNotZeroOrJump(ValueId value_id, LabelId label_id);
46  ValueId Call(v8::FunctionCallback callback, ValueId value_id);
47
48 private:
49  FastAccessorBuilder() = delete;
50  FastAccessorBuilder(const FastAccessorBuilder&) = delete;
51  ~FastAccessorBuilder() = delete;
52  void operator=(const FastAccessorBuilder&) = delete;
53};
54
55}  // namespace experimental
56}  // namespace v8
57
58#endif  // V8_INCLUDE_V8_EXPERIMENTAL_H_
59