text: /*
   * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
   * All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions are met:
   *
   * 1. Redistributions of source code must retain the above copyright notice, this
   *    list of conditions and the following disclaimer.
   *
   * 2. Redistributions in binary form must reproduce the above copyright notice,
   *    this list of conditions and the following disclaimer in the documentation
   *    and/or other materials provided with the distribution.
   *
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
   * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
   * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
   * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
   * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
   * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
   * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
   * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   */
  
  #include <AK/Function.h>
  #include <LibJS/Heap/Heap.h>
  #include <LibJS/Interpreter.h>
  #include <LibJS/Runtime/Error.h>
  #include <LibJS/Runtime/ErrorPrototype.h>
  #include <LibJS/Runtime/GlobalObject.h>
  #include <LibJS/Runtime/PrimitiveString.h>
  #include <LibJS/Runtime/Value.h>
  
  namespace JS {
  
  ErrorPrototype::ErrorPrototype()
      : Object(interpreter().global_object().object_prototype())
  {
      put_native_property("name", name_getter, name_setter);
      put_native_property("message", message_getter, nullptr);
      put_native_function("toString", to_string);
  }
  
  ErrorPrototype::~ErrorPrototype()
  {
  }
  
  Value ErrorPrototype::name_getter(Interpreter& interpreter)
  {
      auto* this_object = interpreter.this_value().to_object(interpreter.heap());
      if (!this_object)
          return {};
      if (!this_object->is_error())
          return interpreter.throw_exception<TypeError>("Not an Error object");
      return js_string(interpreter, static_cast<const Error*>(this_object)->name());
  }
  
  void ErrorPrototype::name_setter(Interpreter& interpreter, Value value)
  {
      auto* this_object = interpreter.this_value().to_object(interpreter.heap());
      if (!this_object)
          return;
      if (!this_object->is_error()) {
          interpreter.throw_exception<TypeError>("Not an Error object");
          return;
      }
      auto name = FlyString(value.to_string());
      static_cast<Error*>(this_object)->set_name(name);
  }
  
  Value ErrorPrototype::message_getter(Interpreter& interpreter)
  {
      auto* this_object = interpreter.this_value().to_object(interpreter.heap());
      if (!this_object)
          return {};
      if (!this_object->is_error())
          return interpreter.throw_exception<TypeError>("Not an Error object");
      return js_string(interpreter, static_cast<const Error*>(this_object)->message());
  }
  
  Value ErrorPrototype::to_string(Interpreter& interpreter)
  {
      if (!interpreter.this_value().is_object())
          return interpreter.throw_exception<TypeError>("Not an object");
      auto& this_object = interpreter.this_value().as_object();
  
      String name = "Error";
      auto object_name_property = this_object.get("name");
      if (object_name_property.has_value() && !object_name_property.value().is_undefined())
          name = object_name_property.value().to_string();
  
      String message = "";
      auto object_message_property = this_object.get("message");
      if (object_message_property.has_value() && !object_message_property.value().is_undefined())
          message = object_message_property.value().to_string();
  
      if (name.length() == 0)
          return js_string(interpreter, message);
      if (message.length() == 0)
          return js_string(interpreter, name);
      return js_string(interpreter, String::format("%s: %s", name.characters(), message.characters()));
  }
  
  #define __JS_ENUMERATE(ClassName, snake_name, PrototypeName, ConstructorName) \
      PrototypeName::PrototypeName()                                            \
          : Object(interpreter().global_object().error_prototype())             \
      {                                                                         \
      }                                                                         \
      PrototypeName::~PrototypeName() {}                                        \
      const char* PrototypeName::class_name() const { return #PrototypeName; }
  
  JS_ENUMERATE_ERROR_SUBCLASSES
  #undef __JS_ENUMERATE
  
  }
  