V8 API Reference, 7.2.502.16 (for Deno 0.2.4)
builtins-async-gen.h
1 // Copyright 2016 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 V8_BUILTINS_BUILTINS_ASYNC_GEN_H_
6 #define V8_BUILTINS_BUILTINS_ASYNC_GEN_H_
7 
8 #include "src/builtins/builtins-promise-gen.h"
9 
10 namespace v8 {
11 namespace internal {
12 
13 class AsyncBuiltinsAssembler : public PromiseBuiltinsAssembler {
14  public:
15  explicit AsyncBuiltinsAssembler(compiler::CodeAssemblerState* state)
16  : PromiseBuiltinsAssembler(state) {}
17 
18  protected:
19  // Perform steps to resume generator after `value` is resolved.
20  // `on_reject_context_index` is an index into the Native Context, which should
21  // point to a SharedFunctioninfo instance used to create the closure. The
22  // value following the reject index should be a similar value for the resolve
23  // closure. Returns the Promise-wrapped `value`.
24  Node* Await(Node* context, Node* generator, Node* value, Node* outer_promise,
25  Node* on_resolve_context_index, Node* on_reject_context_index,
26  Node* is_predicted_as_caught);
27  Node* Await(Node* context, Node* generator, Node* value, Node* outer_promise,
28  int on_resolve_context_index, int on_reject_context_index,
29  Node* is_predicted_as_caught) {
30  return Await(context, generator, value, outer_promise,
31  IntPtrConstant(on_resolve_context_index),
32  IntPtrConstant(on_reject_context_index),
33  is_predicted_as_caught);
34  }
35  Node* Await(Node* context, Node* generator, Node* value, Node* outer_promise,
36  int on_resolve_context_index, int on_reject_context_index,
37  bool is_predicted_as_caught) {
38  return Await(context, generator, value, outer_promise,
39  on_resolve_context_index, on_reject_context_index,
40  BooleanConstant(is_predicted_as_caught));
41  }
42 
43  // Return a new built-in function object as defined in
44  // Async Iterator Value Unwrap Functions
45  Node* CreateUnwrapClosure(Node* const native_context, Node* const done);
46 
47  private:
48  void InitializeNativeClosure(Node* context, Node* native_context,
49  Node* function, Node* context_index);
50  Node* AllocateAsyncIteratorValueUnwrapContext(Node* native_context,
51  Node* done);
52 
53  Node* AwaitOld(Node* context, Node* generator, Node* value,
54  Node* outer_promise, Node* on_resolve_context_index,
55  Node* on_reject_context_index, Node* is_predicted_as_caught);
56  Node* AwaitOptimized(Node* context, Node* generator, Node* value,
57  Node* outer_promise, Node* on_resolve_context_index,
58  Node* on_reject_context_index,
59  Node* is_predicted_as_caught);
60 };
61 
62 } // namespace internal
63 } // namespace v8
64 
65 #endif // V8_BUILTINS_BUILTINS_ASYNC_GEN_H_
v8
Definition: libplatform.h:13