// Copyright 2018 the V8 project 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 'src/builtins/builtins-iterator-gen.h'

namespace iterator {
  // Returned from IteratorBuiltinsAssembler::GetIterator().
  struct IteratorRecord {
    // iteratorRecord.[[Iterator]]
    object: JSReceiver;

    // iteratorRecord.[[NextMethod]]
    next: JSAny;
  }

  extern macro IteratorBuiltinsAssembler::GetIteratorMethod(
      implicit context: Context)(JSAny): JSAny;
  extern macro IteratorBuiltinsAssembler::GetIterator(
      implicit context: Context)(JSAny): IteratorRecord;

  extern macro IteratorBuiltinsAssembler::IteratorStep(
      implicit context: Context)(IteratorRecord): JSReceiver
      labels Done;
  extern macro IteratorBuiltinsAssembler::IteratorStep(
      implicit context: Context)(IteratorRecord, Map): JSReceiver
      labels Done;

  extern macro IteratorBuiltinsAssembler::IteratorValue(
      implicit context: Context)(JSReceiver): JSAny;
  extern macro IteratorBuiltinsAssembler::IteratorValue(
      implicit context: Context)(JSReceiver, Map): JSAny;

  extern macro IteratorBuiltinsAssembler::IteratorCloseOnException(
      implicit context: Context)(IteratorRecord, JSAny): never;

  extern macro IteratorBuiltinsAssembler::IterableToList(
      implicit context: Context)(JSAny, JSAny): JSArray;

  extern builtin IterableToListMayPreserveHoles(implicit context:
                                                    Context)(JSAny, JSAny);
  extern builtin IterableToListWithSymbolLookup(implicit context:
                                                    Context)(JSAny);

  transitioning builtin GetIteratorWithFeedback(
      context: Context, receiver: JSAny, feedbackSlot: Smi,
      feedback: Undefined | FeedbackVector): JSAny {
    typeswitch (feedback) {
      case (Undefined): {
        return GetProperty(receiver, IteratorSymbolConstant());
      }
      case (feedback: FeedbackVector): {
        return LoadIC(
            context, receiver, IteratorSymbolConstant(), feedbackSlot,
            feedback);
      }
    }
  }
}