third_party/WebKit/Source/bindings/core/v8/V8IteratorResultValue.cpp

// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "bindings/core/v8/V8IteratorResultValue.h"

namespace blink {

v8::Local<v8::Object> v8IteratorResultValue(v8::Isolate* isolate,
                                            bool done,
                                            v8::Local<v8::Value> value) {
  v8::Local<v8::Object> result = v8::Object::New(isolate);
  if (value.IsEmpty())
    value = v8::Undefined(isolate);
  if (!v8CallBoolean(result->CreateDataProperty(isolate->GetCurrentContext(),
                                                v8String(isolate, "done"),
                                                v8Boolean(done, isolate))) ||
      !v8CallBoolean(result->CreateDataProperty(
          isolate->GetCurrentContext(), v8String(isolate, "value"), value)))
    return v8::Local<v8::Object>();
  return result;
}

v8::MaybeLocal<v8::Value> v8UnpackIteratorResult(ScriptState* scriptState,
                                                 v8::Local<v8::Object> result,
                                                 bool* done) {
  v8::MaybeLocal<v8::Value> maybeValue = result->Get(
      scriptState->context(), v8String(scriptState->isolate(), "value"));
  if (maybeValue.IsEmpty())
    return maybeValue;
  v8::Local<v8::Value> doneValue;
  if (!v8Call(result->Get(scriptState->context(),
                          v8String(scriptState->isolate(), "done")),
              doneValue) ||
      !v8Call(doneValue->BooleanValue(scriptState->context()), *done)) {
    return v8::MaybeLocal<v8::Value>();
  }
  return maybeValue;
}

}  // namespace blink