/**
 * Common function to create a formatted JSON string.
 *
 * See also:
 *          ECMA-262 v5, 15.12.3
 *
 * Used by:
 *         - ecma_builtin_json_object step 10.b
 *         - ecma_builtin_json_array step 10.b
 *
 * @return ecma value
 *         Returned value must be freed with ecma_free_value.
 */
ecma_value_t
ecma_builtin_helper_json_create_formatted_json (ecma_string_t *left_bracket_p, /**< left bracket*/
                                                ecma_string_t *right_bracket_p, /**< right bracket*/
                                                ecma_string_t *stepback_p, /**< stepback*/
                                                ecma_collection_header_t *partial_p, /**< key-value pairs*/
                                                ecma_json_stringify_context_t *context_p) /**< context*/
{
  /* 10.b */
  ecma_string_t *comma_str_p = ecma_get_magic_string (LIT_MAGIC_STRING_COMMA_CHAR);
  ecma_string_t *line_feed_p = ecma_get_magic_string (LIT_MAGIC_STRING_NEW_LINE_CHAR);
  ecma_string_t *properties_str_p;
  ecma_string_t *separator_p;

  /* 10.b.i */
  ecma_string_t *tmp_str_p = ecma_concat_ecma_strings (comma_str_p, line_feed_p);
  ecma_deref_ecma_string (comma_str_p);
  separator_p = tmp_str_p;

  tmp_str_p = ecma_concat_ecma_strings (separator_p, context_p->indent_str_p);
  ecma_deref_ecma_string (separator_p);
  separator_p = tmp_str_p;

  /* 10.b.ii */
  properties_str_p = ecma_builtin_helper_json_create_separated_properties (partial_p, separator_p);
  ecma_deref_ecma_string (separator_p);

  /* 10.b.iii */
  ecma_string_t *final_str_p;

  tmp_str_p = ecma_concat_ecma_strings (left_bracket_p, line_feed_p);
  final_str_p = tmp_str_p;

  tmp_str_p = ecma_concat_ecma_strings (final_str_p, context_p->indent_str_p);
  ecma_deref_ecma_string (final_str_p);
  final_str_p = tmp_str_p;

  tmp_str_p = ecma_concat_ecma_strings (final_str_p, properties_str_p);
  ecma_deref_ecma_string (final_str_p);
  ecma_deref_ecma_string (properties_str_p);
  final_str_p = tmp_str_p;

  tmp_str_p = ecma_concat_ecma_strings (final_str_p, line_feed_p);
  ecma_deref_ecma_string (line_feed_p);
  ecma_deref_ecma_string (final_str_p);
  final_str_p = tmp_str_p;

  tmp_str_p = ecma_concat_ecma_strings (final_str_p, stepback_p);
  ecma_deref_ecma_string (final_str_p);
  final_str_p = tmp_str_p;

  tmp_str_p = ecma_concat_ecma_strings (final_str_p, right_bracket_p);
  ecma_deref_ecma_string (final_str_p);
  final_str_p = tmp_str_p;

  return ecma_make_string_value (final_str_p);
} /* ecma_builtin_helper_json_create_formatted_json */

/**
 * The Date.prototype object's 'toString' routine
 *
 * See also:
 *          ECMA-262 v5, 15.9.5.2
 *
 * @return ecma value
 *         Returned value must be freed with ecma_free_value.
 */
static ecma_value_t
ecma_builtin_date_prototype_to_string (ecma_value_t this_arg) /**< this argument */
{
  ecma_value_t ret_value = ecma_make_simple_value (ECMA_SIMPLE_VALUE_EMPTY);

  ECMA_TRY_CATCH (prim_value,
                  ecma_date_get_primitive_value (this_arg),
                  ret_value);

  ecma_number_t *prim_num_p = ecma_get_number_from_value (prim_value);

  if (ecma_number_is_nan (*prim_num_p))
  {
    ecma_string_t *magic_str_p = ecma_get_magic_string (LIT_MAGIC_STRING_INVALID_DATE_UL);
    ret_value = ecma_make_string_value (magic_str_p);
  }
  else
  {
    ret_value = ecma_date_value_to_string (*prim_num_p);
  }

  ECMA_FINALIZE (prim_value);

  return ret_value;
} /* ecma_builtin_date_prototype_to_string */

/**
 * List names of a Function object's lazy instantiated properties,
 * adding them to corresponding string collections
 *
 * See also:
 *          ecma_op_function_try_lazy_instantiate_property
 */
void
ecma_op_function_list_lazy_property_names (bool separate_enumerable, /**< true - list enumerable properties into
                                                                      *          main collection and non-enumerable
                                                                      *          to collection of 'skipped
                                                                      *          non-enumerable' properties,
                                                                      *   false - list all properties into main
                                                                      *           collection.
                                                                      */
                                           ecma_collection_header_t *main_collection_p, /**< 'main' collection */
                                           ecma_collection_header_t *non_enum_collection_p) /**< skipped
                                                                                             *   'non-enumerable'
                                                                                             *   collection */
{
  ecma_collection_header_t *for_enumerable_p = main_collection_p;
  JERRY_UNUSED (for_enumerable_p);

  ecma_collection_header_t *for_non_enumerable_p = separate_enumerable ? non_enum_collection_p : main_collection_p;

  ecma_string_t *name_p;

  /* 'length' property is non-enumerable (ECMA-262 v5, 13.2.5) */
  name_p = ecma_new_ecma_length_string ();
  ecma_append_to_values_collection (for_non_enumerable_p, ecma_make_string_value (name_p), true);
  ecma_deref_ecma_string (name_p);

  /* 'prototype' property is non-enumerable (ECMA-262 v5, 13.2.18) */
  name_p = ecma_get_magic_string (LIT_MAGIC_STRING_PROTOTYPE);
  ecma_append_to_values_collection (for_non_enumerable_p, ecma_make_string_value (name_p), true);
  ecma_deref_ecma_string (name_p);
} /* ecma_op_function_list_lazy_property_names */

/**
 * The Date.prototype object's 'toJSON' routine
 *
 * See also:
 *          ECMA-262 v5, 15.9.5.44
 *
 * @return ecma value
 *         Returned value must be freed with ecma_free_value.
 */
static ecma_value_t
ecma_builtin_date_prototype_to_json (ecma_value_t this_arg, /**< this argument */
                                     ecma_value_t arg) /**< key */
{
  JERRY_UNUSED (arg);
  ecma_value_t ret_value = ecma_make_simple_value (ECMA_SIMPLE_VALUE_EMPTY);

  /* 1. */
  ECMA_TRY_CATCH (obj,
                  ecma_op_to_object (this_arg),
                  ret_value);

  /* 2. */
  ECMA_TRY_CATCH (tv,
                  ecma_op_to_primitive (obj, ECMA_PREFERRED_TYPE_NUMBER),
                  ret_value);

  /* 3. */
  if (ecma_is_value_number (tv))
  {
    ecma_number_t num_value = ecma_get_number_from_value (tv);

    if (ecma_number_is_nan (num_value) || ecma_number_is_infinity (num_value))
    {
      ret_value = ecma_make_simple_value (ECMA_SIMPLE_VALUE_NULL);
    }
  }

  if (ecma_is_value_empty (ret_value))
  {
    ecma_string_t *to_iso_str_p = ecma_get_magic_string (LIT_MAGIC_STRING_TO_ISO_STRING_UL);
    ecma_object_t *value_obj_p = ecma_get_object_from_value (obj);

    /* 4. */
    ECMA_TRY_CATCH (to_iso,
                    ecma_op_object_get (value_obj_p, to_iso_str_p),
                    ret_value);

    /* 5. */
    if (!ecma_op_is_callable (to_iso))
    {
      ret_value = ecma_raise_type_error (ECMA_ERR_MSG (""));
    }
    /* 6. */
    else
    {
      ecma_object_t *to_iso_obj_p = ecma_get_object_from_value (to_iso);
      ret_value = ecma_op_function_call (to_iso_obj_p, this_arg, NULL, 0);
    }

    ECMA_FINALIZE (to_iso);

    ecma_deref_ecma_string (to_iso_str_p);
  }

  ECMA_FINALIZE (tv);
  ECMA_FINALIZE (obj);

  return ret_value;
} /* ecma_builtin_date_prototype_to_json */

/**
 * Allocate new ecma-string and fill it with characters from the utf8 string
 *
 * @return pointer to ecma-string descriptor
 */
ecma_string_t *
ecma_new_ecma_string_from_utf8 (const lit_utf8_byte_t *string_p, /**< utf-8 string */
                                lit_utf8_size_t string_size) /**< string size */
{
  JERRY_ASSERT (string_p != NULL || string_size == 0);
  JERRY_ASSERT (lit_is_cesu8_string_valid (string_p, string_size));

  lit_magic_string_id_t magic_string_id;
  if (lit_is_utf8_string_magic (string_p, string_size, &magic_string_id))
  {
    return ecma_get_magic_string (magic_string_id);
  }

  lit_magic_string_ex_id_t magic_string_ex_id;
  if (lit_is_ex_utf8_string_magic (string_p, string_size, &magic_string_ex_id))
  {
    return ecma_get_magic_string_ex (magic_string_ex_id);
  }

  JERRY_ASSERT (string_size > 0 && string_size <= UINT16_MAX);

  ecma_string_t *string_desc_p = jmem_heap_alloc_block (sizeof (ecma_string_t) + string_size);

  string_desc_p->refs_and_container = ECMA_STRING_CONTAINER_HEAP_UTF8_STRING | ECMA_STRING_REF_ONE;
  string_desc_p->hash = lit_utf8_string_calc_hash (string_p, string_size);
  string_desc_p->u.common_field = 0;
  string_desc_p->u.utf8_string.size = (uint16_t) string_size;
  string_desc_p->u.utf8_string.length = (uint16_t) lit_utf8_string_length (string_p, string_size);

  lit_utf8_byte_t *data_p = (lit_utf8_byte_t *) (string_desc_p + 1);
  memcpy (data_p, string_p, string_size);
  return string_desc_p;
} /* ecma_new_ecma_string_from_utf8 */

/**
 * External function object creation operation.
 *
 * Note:
 *      external function object is implementation-defined object type
 *      that represent functions implemented in native code, using Embedding API
 *
 * @return pointer to newly created external function object
 */
ecma_object_t *
ecma_op_create_external_function_object (ecma_external_pointer_t code_p) /**< pointer to external native handler */
{
  ecma_object_t *prototype_obj_p = ecma_builtin_get (ECMA_BUILTIN_ID_FUNCTION_PROTOTYPE);

  ecma_object_t *function_obj_p;
  function_obj_p = ecma_create_object (prototype_obj_p,
                                       sizeof (ecma_extended_object_t),
                                       ECMA_OBJECT_TYPE_EXTERNAL_FUNCTION);

  ecma_deref_object (prototype_obj_p);

  /*
   * [[Class]] property is not stored explicitly for objects of ECMA_OBJECT_TYPE_EXTERNAL_FUNCTION type.
   *
   * See also: ecma_object_get_class_name
   */

  ecma_extended_object_t *ext_func_obj_p = (ecma_extended_object_t *) function_obj_p;
  ext_func_obj_p->u.external_function = code_p;

  ecma_string_t *magic_string_prototype_p = ecma_get_magic_string (LIT_MAGIC_STRING_PROTOTYPE);
  ecma_builtin_helper_def_prop (function_obj_p,
                                magic_string_prototype_p,
                                ecma_make_simple_value (ECMA_SIMPLE_VALUE_UNDEFINED),
                                true, /* Writable */
                                false, /* Enumerable */
                                false, /* Configurable */
                                false); /* Failure handling */

  ecma_deref_ecma_string (magic_string_prototype_p);

  return function_obj_p;
} /* ecma_op_create_external_function_object */

/**
 * The Date.prototype object's 'getYear' routine
 *
 * See also:
 *          ECMA-262 v5, AnnexB.B.2.4
 *
 * @return ecma value
 *         Returned value must be freed with ecma_free_value.
 */
static ecma_value_t
ecma_builtin_date_prototype_get_year (ecma_value_t this_arg) /**< this argument */
{
  ecma_value_t ret_value = ecma_make_simple_value (ECMA_SIMPLE_VALUE_EMPTY);

  /* 1. */
  ECMA_TRY_CATCH (value, ecma_builtin_date_prototype_get_time (this_arg), ret_value);
  ecma_number_t *this_num_p = ecma_get_number_from_value (value);
  /* 2. */
  if (ecma_number_is_nan (*this_num_p))
  {
    ecma_string_t *nan_str_p = ecma_get_magic_string (LIT_MAGIC_STRING_NAN);
    ret_value = ecma_make_string_value (nan_str_p);
  }
  else
  {
    /* 3. */
    ecma_number_t *ret_num_p = ecma_alloc_number ();
    *ret_num_p = ecma_date_year_from_time (ecma_date_local_time (*this_num_p)) - 1900;
    ret_value = ecma_make_number_value (ret_num_p);
  }
  ECMA_FINALIZE (value);

  return ret_value;
} /* ecma_builtin_date_prototype_get_year */

/**
 * Common function to create a non-formatted JSON string.
 *
 * See also:
 *          ECMA-262 v5, 15.12.3
 *
 * Used by:
 *         - ecma_builtin_json_object step 10.a
 *         - ecma_builtin_json_array step 10.a
 *
 * @return ecma value
 *         Returned value must be freed with ecma_free_value.
 */
ecma_value_t
ecma_builtin_helper_json_create_non_formatted_json (ecma_string_t *left_bracket_p, /**< left bracket*/
                                                    ecma_string_t *right_bracket_p, /**< right bracket*/
                                                    ecma_collection_header_t *partial_p) /**< key-value pairs*/
{
  /* 10.a */
  ecma_string_t *comma_str_p = ecma_get_magic_string (LIT_MAGIC_STRING_COMMA_CHAR);
  ecma_string_t *properties_str_p;
  ecma_string_t *tmp_str_p;

  /* 10.a.i */
  properties_str_p = ecma_builtin_helper_json_create_separated_properties (partial_p, comma_str_p);
  ecma_deref_ecma_string (comma_str_p);

  /* 10.a.ii */
  tmp_str_p = ecma_concat_ecma_strings (left_bracket_p, properties_str_p);
  ecma_deref_ecma_string (properties_str_p);
  properties_str_p = tmp_str_p;

  tmp_str_p = ecma_concat_ecma_strings (properties_str_p, right_bracket_p);
  ecma_deref_ecma_string (properties_str_p);
  properties_str_p = tmp_str_p;

  return ecma_make_string_value (properties_str_p);
} /* ecma_builtin_helper_json_create_non_formatted_json */

/**
 * Allocate new ecma-string and fill it with ecma-number
 *
 * @return pointer to ecma-string descriptor
 */
ecma_string_t *
ecma_new_ecma_string_from_number (ecma_number_t num) /**< ecma-number */
{
  uint32_t uint32_num = ecma_number_to_uint32 (num);
  if (num == ((ecma_number_t) uint32_num))
  {
    return ecma_new_ecma_string_from_uint32 (uint32_num);
  }

  if (ecma_number_is_nan (num))
  {
    return ecma_get_magic_string (LIT_MAGIC_STRING_NAN);
  }

  if (ecma_number_is_infinity (num))
  {
    lit_magic_string_id_t id = (ecma_number_is_negative (num) ? LIT_MAGIC_STRING_NEGATIVE_INFINITY_UL
                                                              : LIT_MAGIC_STRING_INFINITY_UL);
    return ecma_get_magic_string (id);
  }

  lit_utf8_byte_t str_buf[ECMA_MAX_CHARS_IN_STRINGIFIED_NUMBER];
  lit_utf8_size_t str_size = ecma_number_to_utf8_string (num, str_buf, sizeof (str_buf));

  JERRY_ASSERT (str_size > 0);
#ifndef JERRY_NDEBUG
  lit_magic_string_id_t magic_string_id;
  lit_magic_string_ex_id_t magic_string_ex_id;

  JERRY_ASSERT (!lit_is_utf8_string_magic (str_buf, str_size, &magic_string_id)
                && !lit_is_ex_utf8_string_magic (str_buf, str_size, &magic_string_ex_id));
#endif /* !JERRY_NDEBUG */

  ecma_string_t *string_desc_p = jmem_heap_alloc_block (sizeof (ecma_string_t) + str_size);

  string_desc_p->refs_and_container = ECMA_STRING_CONTAINER_HEAP_UTF8_STRING | ECMA_STRING_REF_ONE;
  string_desc_p->hash = lit_utf8_string_calc_hash (str_buf, str_size);
  string_desc_p->u.common_field = 0;
  string_desc_p->u.utf8_string.size = (uint16_t) str_size;
  string_desc_p->u.utf8_string.length = (uint16_t) str_size;

  lit_utf8_byte_t *data_p = (lit_utf8_byte_t *) (string_desc_p + 1);
  memcpy (data_p, str_buf, str_size);
  return string_desc_p;
} /* ecma_new_ecma_string_from_number */

/**
 * Checks whether the property name is "length".
 *
 * @return true if the property name is length
 *         false otherwise
 */
static inline bool __attr_always_inline___
ecma_op_general_object_property_name_is_length (ecma_string_t *property_name_p) /**< property name */
{
  ecma_string_t *magic_string_length_p = ecma_get_magic_string (LIT_MAGIC_STRING_LENGTH);

  bool property_name_is_length = ecma_compare_ecma_strings (property_name_p,
                                                            magic_string_length_p);

  ecma_deref_ecma_string (magic_string_length_p);

  return property_name_is_length;
} /* ecma_op_general_object_property_name_is_length */

/**
 * The RegExp.prototype object's 'exec' routine
 *
 * See also:
 *          ECMA-262 v5, 15.10.6.2
 *
 * @return array object containing the results - if the matched
 *         null                                - otherwise
 *
 *         May raise error, so returned value must be freed with ecma_free_value.
 */
static ecma_value_t
ecma_builtin_regexp_prototype_exec (ecma_value_t this_arg, /**< this argument */
                                    ecma_value_t arg) /**< routine's argument */
{
  ecma_value_t ret_value = ecma_make_simple_value (ECMA_SIMPLE_VALUE_EMPTY);

  if (!ecma_is_value_object (this_arg)
      || ecma_object_get_class_name (ecma_get_object_from_value (this_arg)) != LIT_MAGIC_STRING_REGEXP_UL)
  {
    ret_value = ecma_raise_type_error (ECMA_ERR_MSG ("Incomplete RegExp type"));
  }
  else
  {
    ECMA_TRY_CATCH (obj_this, ecma_op_to_object (this_arg), ret_value);

    ECMA_TRY_CATCH (input_str_value,
                    ecma_op_to_string (arg),
                    ret_value);

    ecma_property_t *bytecode_prop_p;
    ecma_object_t *obj_p = ecma_get_object_from_value (obj_this);
    bytecode_prop_p = ecma_get_internal_property (obj_p, ECMA_INTERNAL_PROPERTY_REGEXP_BYTECODE);

    void *bytecode_p = ECMA_GET_INTERNAL_VALUE_POINTER (void, ecma_get_internal_property_value (bytecode_prop_p));

    if (bytecode_p == NULL)
    {
      /* Missing bytecode means empty RegExp: '/(?:)/', so always return empty string. */
      ecma_string_t *capture_str_p = ecma_get_magic_string (LIT_MAGIC_STRING__EMPTY);

      ecma_value_t arguments_list[1];
      arguments_list[0] = ecma_make_string_value (capture_str_p);

      ret_value = ecma_op_create_array_object (arguments_list, 1, false);

      ecma_deref_ecma_string (capture_str_p);

      re_set_result_array_properties (ecma_get_object_from_value (ret_value),
                                      ecma_get_string_from_value (input_str_value),
                                      1,
                                      0);
    }
    else
    {
      ret_value = ecma_regexp_exec_helper (obj_this, input_str_value, false);
    }

    ECMA_FINALIZE (input_str_value);
    ECMA_FINALIZE (obj_this);
  }

  return ret_value;
} /* ecma_builtin_regexp_prototype_exec */

/**
 * The Function.prototype object's 'toString' routine
 *
 * See also:
 *          ECMA-262 v5, 15.3.4.2
 *
 * @return ecma value
 *         Returned value must be freed with ecma_free_value.
 */
static ecma_value_t
ecma_builtin_function_prototype_object_to_string (ecma_value_t this_arg) /**< this argument */
{
  ecma_value_t ret_value = ecma_make_simple_value (ECMA_SIMPLE_VALUE_EMPTY);

  if (!ecma_op_is_callable (this_arg))
  {
    ret_value = ecma_raise_type_error (ECMA_ERR_MSG (""));
  }
  else
  {
    ecma_string_t *function_to_string_p = ecma_get_magic_string (LIT_MAGIC_STRING__FUNCTION_TO_STRING);
    ret_value = ecma_make_string_value (function_to_string_p);
  }
  return ret_value;
} /* ecma_builtin_function_prototype_object_to_string */

/**
 * The Function.prototype object's 'toString' routine
 *
 * See also:
 *          ECMA-262 v5, 15.3.4.2
 *
 * @return completion value
 *         Returned value must be freed with ecma_free_completion_value.
 */
static ecma_completion_value_t
ecma_builtin_function_prototype_object_to_string (ecma_value_t this_arg) /**< this argument */
{
  ecma_completion_value_t ret_value = ecma_make_empty_completion_value ();

  if (!ecma_op_is_callable (this_arg))
  {
    ret_value = ecma_make_throw_obj_completion_value (ecma_new_standard_error (ECMA_ERROR_TYPE));
  }
  else
  {
    ecma_string_t *function_to_string_p = ecma_get_magic_string (LIT_MAGIC_STRING__FUNCTION_TO_STRING);
    ret_value = ecma_make_normal_completion_value (ecma_make_string_value (function_to_string_p));
  }
  return ret_value;
} /* ecma_builtin_function_prototype_object_to_string */

/**
 * The String.prototype object's 'charAt' routine
 *
 * See also:
 *          ECMA-262 v5, 15.5.4.4
 *
 * @return completion value
 *         Returned value must be freed with ecma_free_completion_value.
 */
static ecma_completion_value_t
ecma_builtin_string_prototype_object_char_at (ecma_value_t this_arg, /**< this argument */
                                              ecma_value_t arg) /**< routine's argument */
{
  ecma_completion_value_t ret_value = ecma_make_empty_completion_value ();

  /* 1 */
  ECMA_TRY_CATCH (check_coercible_val,
                  ecma_op_check_object_coercible (this_arg),
                  ret_value);

  /* 2 */
  ECMA_TRY_CATCH (to_string_val,
                  ecma_op_to_string (this_arg),
                  ret_value);

  /* 3 */
  ECMA_OP_TO_NUMBER_TRY_CATCH (index_num,
                               arg,
                               ret_value);

  /* 4 */
  ecma_string_t *original_string_p = ecma_get_string_from_value (to_string_val);
  const ecma_length_t len = ecma_string_get_length (original_string_p);

  /* 5 */
  if (index_num < 0 || index_num >= len || !len)
  {
    ret_value = ecma_make_normal_completion_value (ecma_make_string_value (
                                                   ecma_get_magic_string (LIT_MAGIC_STRING__EMPTY)));
  }
  else
  {
    /* 6 */
    ecma_char_t new_ecma_char = ecma_string_get_char_at_pos (original_string_p, ecma_number_to_uint32 (index_num));
    ret_value = ecma_make_normal_completion_value (ecma_make_string_value (
                                                   ecma_new_ecma_string_from_code_unit (new_ecma_char)));
  }

  ECMA_OP_TO_NUMBER_FINALIZE (index_num);

  ECMA_FINALIZE (to_string_val);
  ECMA_FINALIZE (check_coercible_val);

  return ret_value;
} /* ecma_builtin_string_prototype_object_char_at */

/**
 * Construct a Function object for specified built-in routine
 *
 * See also: ECMA-262 v5, 15
 *
 * @return pointer to constructed Function object
 */
ecma_object_t*
ecma_builtin_make_function_object_for_routine (ecma_builtin_id_t builtin_id, /**< identifier of built-in object
                                                                                  that initially contains property
                                                                                  with the routine */
                                               uint16_t routine_id, /**< builtin-wide identifier of the built-in
                                                                         object's routine property */
                                               ecma_number_t length_prop_num_value) /**< ecma-number - value
                                                                                         of 'length' property
                                                                                         of function object to create */
{
  ecma_object_t *prototype_obj_p = ecma_builtin_get (ECMA_BUILTIN_ID_FUNCTION_PROTOTYPE);

  ecma_object_t *func_obj_p = ecma_create_object (prototype_obj_p, true, ECMA_OBJECT_TYPE_BUILT_IN_FUNCTION);

  ecma_deref_object (prototype_obj_p);

  ecma_set_object_is_builtin (func_obj_p, true);

  uint64_t packed_value = jrt_set_bit_field_value (0,
                                                   builtin_id,
                                                   ECMA_BUILTIN_ROUTINE_ID_BUILT_IN_OBJECT_ID_POS,
                                                   ECMA_BUILTIN_ROUTINE_ID_BUILT_IN_OBJECT_ID_WIDTH);
  packed_value = jrt_set_bit_field_value (packed_value,
                                          routine_id,
                                          ECMA_BUILTIN_ROUTINE_ID_BUILT_IN_ROUTINE_ID_POS,
                                          ECMA_BUILTIN_ROUTINE_ID_BUILT_IN_ROUTINE_ID_WIDTH);
  ecma_property_t *routine_id_prop_p = ecma_create_internal_property (func_obj_p,
                                                                      ECMA_INTERNAL_PROPERTY_BUILT_IN_ROUTINE_ID);

  JERRY_ASSERT ((uint32_t) packed_value == packed_value);
  routine_id_prop_p->u.internal_property.value = (uint32_t) packed_value;

  ecma_string_t* magic_string_length_p = ecma_get_magic_string (LIT_MAGIC_STRING_LENGTH);
  ecma_property_t *len_prop_p = ecma_create_named_data_property (func_obj_p,
                                                                 magic_string_length_p,
                                                                 false, false, false);

  ecma_deref_ecma_string (magic_string_length_p);

  ecma_number_t* len_p = ecma_alloc_number ();
  *len_p = length_prop_num_value;

  ecma_set_named_data_property_value (len_prop_p, ecma_make_number_value (len_p));

  return func_obj_p;
} /* ecma_builtin_make_function_object_for_routine */

/**
 * Standard ecma-error object constructor.
 *
 * @return pointer to ecma-object representing specified error
 *         with reference counter set to one.
 */
ecma_object_t *
ecma_new_standard_error_with_message (ecma_standard_error_t error_type, /**< native error type */
                                      ecma_string_t *message_string_p) /**< message string */
{
  ecma_object_t *new_error_obj_p = ecma_new_standard_error (error_type);

  ecma_string_t *message_magic_string_p = ecma_get_magic_string (LIT_MAGIC_STRING_MESSAGE);
  ecma_property_t *prop_p = ecma_create_named_data_property (new_error_obj_p,
                                                             message_magic_string_p,
                                                             ECMA_PROPERTY_CONFIGURABLE_WRITABLE);

  ecma_ref_ecma_string (message_string_p);
  ecma_set_named_data_property_value (prop_p,
                                      ecma_make_string_value (message_string_p));
  ecma_deref_ecma_string (message_magic_string_p);

  return new_error_obj_p;
} /* ecma_new_standard_error_with_message */

/**
 * External function object creation operation.
 *
 * Note:
 *      external function object is implementation-defined object type
 *      that represent functions implemented in native code, using Embedding API
 *
 * @return pointer to newly created external function object
 */
ecma_object_t*
ecma_op_create_external_function_object (ecma_external_pointer_t code_p) /**< pointer to external native handler */
{
  ecma_object_t *prototype_obj_p = ecma_builtin_get (ECMA_BUILTIN_ID_FUNCTION_PROTOTYPE);

  ecma_object_t *function_obj_p = ecma_create_object (prototype_obj_p, true, ECMA_OBJECT_TYPE_EXTERNAL_FUNCTION);

  ecma_deref_object (prototype_obj_p);

  /*
   * [[Class]] property is not stored explicitly for objects of ECMA_OBJECT_TYPE_EXTERNAL_FUNCTION type.
   *
   * See also: ecma_object_get_class_name
   */

  bool is_created = ecma_create_external_pointer_property (function_obj_p,
                                                           ECMA_INTERNAL_PROPERTY_NATIVE_CODE,
                                                           (ecma_external_pointer_t) code_p);
  JERRY_ASSERT (is_created);

  ecma_property_descriptor_t prop_desc = ecma_make_empty_property_descriptor ();
  {
    prop_desc.is_value_defined = true;
    prop_desc.value = ecma_make_simple_value (ECMA_SIMPLE_VALUE_UNDEFINED);

    prop_desc.is_writable_defined = true;
    prop_desc.is_writable = true;

    prop_desc.is_enumerable_defined = true;
    prop_desc.is_enumerable = false;

    prop_desc.is_configurable_defined = true;
    prop_desc.is_configurable = false;
  }

  ecma_string_t *magic_string_prototype_p = ecma_get_magic_string (LIT_MAGIC_STRING_PROTOTYPE);
  ecma_op_object_define_own_property (function_obj_p,
                                      magic_string_prototype_p,
                                      &prop_desc,
                                      false);
  ecma_deref_ecma_string (magic_string_prototype_p);

  return function_obj_p;
} /* ecma_op_create_external_function_object */

/**
 * 'typeof' opcode handler.
 *
 * See also: ECMA-262 v5, 11.4.3
 *
 * @return ecma value
 *         Returned value must be freed with ecma_free_value
 */
ecma_value_t
opfunc_typeof (ecma_value_t left_value) /**< left value */
{
  ecma_value_t ret_value = ecma_make_simple_value (ECMA_SIMPLE_VALUE_EMPTY);

  ecma_string_t *type_str_p = NULL;

  if (ecma_is_value_undefined (left_value))
  {
    type_str_p = ecma_get_magic_string (LIT_MAGIC_STRING_UNDEFINED);
  }
  else if (ecma_is_value_null (left_value))
  {
    type_str_p = ecma_get_magic_string (LIT_MAGIC_STRING_OBJECT);
  }
  else if (ecma_is_value_boolean (left_value))
  {
    type_str_p = ecma_get_magic_string (LIT_MAGIC_STRING_BOOLEAN);
  }
  else if (ecma_is_value_number (left_value))
  {
    type_str_p = ecma_get_magic_string (LIT_MAGIC_STRING_NUMBER);
  }
  else if (ecma_is_value_string (left_value))
  {
    type_str_p = ecma_get_magic_string (LIT_MAGIC_STRING_STRING);
  }
  else
  {
    JERRY_ASSERT (ecma_is_value_object (left_value));

    if (ecma_op_is_callable (left_value))
    {
      type_str_p = ecma_get_magic_string (LIT_MAGIC_STRING_FUNCTION);
    }
    else
    {
      type_str_p = ecma_get_magic_string (LIT_MAGIC_STRING_OBJECT);
    }
  }

  ret_value = ecma_make_string_value (type_str_p);

  return ret_value;
} /* opfunc_typeof */

/**
 * Common function to concatenate key-value pairs into an ecma-string.
 *
 * See also:
 *          ECMA-262 v5, 15.12.3
 *
 * Used by:
 *         - ecma_builtin_helper_json_create_formatted_json step 10.b.ii
 *         - ecma_builtin_helper_json_create_non_formatted_json step 10.a.i
 *
 * @return pointer to ecma-string
 *         Returned value must be freed with ecma_deref_ecma_string.
 */
ecma_string_t *
ecma_builtin_helper_json_create_separated_properties (ecma_collection_header_t *partial_p, /**< key-value pairs*/
                                                      ecma_string_t *separator_p) /**< separator*/
{
  ecma_string_t *properties_str_p = ecma_get_magic_string (LIT_MAGIC_STRING__EMPTY);
  ecma_string_t *tmp_str_p;

  ecma_collection_iterator_t iterator;
  ecma_collection_iterator_init (&iterator, partial_p);

  uint32_t index = 0;

  while (ecma_collection_iterator_next (&iterator))
  {
    ecma_value_t name_value = *iterator.current_value_p;
    ecma_string_t *current_p = ecma_get_string_from_value (name_value);

    if (index == 0)
    {
      index++;

      tmp_str_p = ecma_concat_ecma_strings (properties_str_p, current_p);
      ecma_deref_ecma_string (properties_str_p);
      properties_str_p = tmp_str_p;
      continue;
    }

    tmp_str_p = ecma_concat_ecma_strings (properties_str_p, separator_p);
    ecma_deref_ecma_string (properties_str_p);
    properties_str_p = tmp_str_p;

    tmp_str_p = ecma_concat_ecma_strings (properties_str_p, current_p);
    ecma_deref_ecma_string (properties_str_p);
    properties_str_p = tmp_str_p;
  }

  return properties_str_p;
} /* ecma_builtin_helper_json_create_separated_properties */

/**
 * The Date.prototype object's 'toDateString' routine
 *
 * See also:
 *          ECMA-262 v5, 15.9.5.3
 *
 * @return ecma value
 *         Returned value must be freed with ecma_free_value.
 */
static ecma_value_t
ecma_builtin_date_prototype_to_date_string (ecma_value_t this_arg) /**< this argument */
{
  ecma_value_t ret_value = ecma_make_simple_value (ECMA_SIMPLE_VALUE_EMPTY);

  if (!ecma_is_value_object (this_arg)
      || ecma_object_get_class_name (ecma_get_object_from_value (this_arg)) != LIT_MAGIC_STRING_DATE_UL)
  {
    ret_value = ecma_raise_type_error (ECMA_ERR_MSG ("Incompatible type"));
  }
  else
  {
    ECMA_TRY_CATCH (obj_this,
                    ecma_op_to_object (this_arg),
                    ret_value);

    ecma_object_t *obj_p = ecma_get_object_from_value (obj_this);
    ecma_property_t *prim_prop_p = ecma_get_internal_property (obj_p,
                                                               ECMA_INTERNAL_PROPERTY_PRIMITIVE_NUMBER_VALUE);
    ecma_number_t *prim_value_num_p = ECMA_GET_INTERNAL_VALUE_POINTER (ecma_number_t,
                                                                       ecma_get_internal_property_value (prim_prop_p));

    if (ecma_number_is_nan (*prim_value_num_p))
    {
      ecma_string_t *magic_str_p = ecma_get_magic_string (LIT_MAGIC_STRING_INVALID_DATE_UL);
      ret_value = ecma_make_string_value (magic_str_p);
    }
    else
    {
      ret_value = ecma_date_value_to_date_string (*prim_value_num_p);
    }

    ECMA_FINALIZE (obj_this);
  }

  return ret_value;
} /* ecma_builtin_date_prototype_to_date_string */