text: /*
   * Copyright (c) 2021, Idan Horowitz <idan.horowitz@serenityos.org>
   *
   * SPDX-License-Identifier: BSD-2-Clause
   */
  
  #include <LibJS/Runtime/Error.h>
  #include <LibJS/Runtime/GlobalObject.h>
  #include <LibJS/Runtime/IteratorOperations.h>
  #include <LibJS/Runtime/Map.h>
  #include <LibJS/Runtime/MapConstructor.h>
  
  namespace JS {
  
  MapConstructor::MapConstructor(GlobalObject& global_object)
      : NativeFunction(vm().names.Map, *global_object.function_prototype())
  {
  }
  
  void MapConstructor::initialize(GlobalObject& global_object)
  {
      auto& vm = this->vm();
      NativeFunction::initialize(global_object);
      define_property(vm.names.prototype, global_object.map_prototype(), 0);
      define_property(vm.names.length, Value(0), Attribute::Configurable);
  
      define_native_accessor(vm.well_known_symbol_species(), symbol_species_getter, {}, Attribute::Configurable);
  }
  
  MapConstructor::~MapConstructor()
  {
  }
  
  Value MapConstructor::call()
  {
      auto& vm = this->vm();
      vm.throw_exception<TypeError>(global_object(), ErrorType::ConstructorWithoutNew, vm.names.Map);
      return {};
  }
  
  // 24.1.1.1 Map ( [ iterable ] ), https://tc39.es/ecma262/#sec-map-iterable
  Value MapConstructor::construct(Function&)
  {
      auto& vm = this->vm();
  
      // FIXME: Use OrdinaryCreateFromConstructor(newTarget, "%Map.prototype%")
      auto* map = Map::create(global_object());
      if (vm.argument(0).is_nullish())
          return map;
  
      auto adder = map->get(vm.names.set);
      if (vm.exception())
          return {};
      if (!adder.is_function()) {
          vm.throw_exception<TypeError>(global_object(), ErrorType::NotAFunction, "'set' property of Map");
          return {};
      }
      get_iterator_values(global_object(), vm.argument(0), [&](Value iterator_value) {
          if (vm.exception())
              return IterationDecision::Break;
          if (!iterator_value.is_object()) {
              vm.throw_exception<TypeError>(global_object(), ErrorType::NotAnObject, String::formatted("Iterator value {}", iterator_value.to_string_without_side_effects()));
              return IterationDecision::Break;
          }
          auto key = iterator_value.as_object().get(0).value_or(js_undefined());
          if (vm.exception())
              return IterationDecision::Break;
          auto value = iterator_value.as_object().get(1).value_or(js_undefined());
          if (vm.exception())
              return IterationDecision::Break;
          (void)vm.call(adder.as_function(), Value(map), key, value);
          return vm.exception() ? IterationDecision::Break : IterationDecision::Continue;
      });
      if (vm.exception())
          return {};
      return map;
  }
  
  // 24.1.2.2 get Map [ @@species ], https://tc39.es/ecma262/#sec-get-map-@@species
  JS_DEFINE_NATIVE_GETTER(MapConstructor::symbol_species_getter)
  {
      return vm.this_value(global_object);
  }
  
  }
  