/*

 * Copyright (c) Meta Platforms, Inc. and affiliates.

 *

 * This source code is licensed under the MIT license found in the

 * LICENSE file in the root directory of this source tree.

 */

//===----------------------------------------------------------------------===//

/// \file

/// ES6.0 22.1.5 Array Iterator Objects

//===----------------------------------------------------------------------===//

#include "JSLibInternal.h"

#include "hermes/VM/JSArray.h"

#include "hermes/VM/Runtime.h"

#include "hermes/VM/StringPrimitive.h"

namespace hermes {

namespace vm {

void populateArrayIteratorPrototype(Runtime &runtime) {

  auto proto = Handle<JSObject>::vmcast(&runtime.arrayIteratorPrototype);

  defineMethod(

      runtime,

      proto,

      Predefined::getSymbolID(Predefined::next),

      nullptr,

      arrayIteratorPrototypeNext,

      0);

  auto dpf = DefinePropertyFlags::getDefaultNewPropertyFlags();

  dpf.writable = 0;

  dpf.enumerable = 0;

  defineProperty(

      runtime,

      proto,

      Predefined::getSymbolID(Predefined::SymbolToStringTag),

      runtime.getPredefinedStringHandle(Predefined::ArrayIterator),

      dpf);

}

CallResult<HermesValue>

arrayIteratorPrototypeNext(void *, Runtime &runtime, NativeArgs args) {

  auto O = args.dyncastThis<JSArrayIterator>();

  if (LLVM_UNLIKELY(!O)) {

    return runtime.raiseTypeError(

        "ArrayIteratorPrototype.next requires that 'this' be an Array Iterator");

  }

  return JSArrayIterator::nextElement(O, runtime);

}

} // namespace vm

} // namespace hermes