/**
* The String.prototype object's 'concat' routine
*
* See also:
* ECMA-262 v5, 15.5.4.6
*
* @return completion value
* Returned value must be freed with ecma_free_completion_value.
*/
static ecma_completion_value_t
ecma_builtin_string_prototype_object_concat (ecma_value_t this_arg, /**< this argument */
const ecma_value_t* argument_list_p, /**< arguments list */
ecma_length_t arguments_number) /**< number of arguments */
{
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 */
// No copy performed
/* 4 */
ecma_string_t *string_to_return = ecma_copy_or_ref_ecma_string (ecma_get_string_from_value (to_string_val));
/* 5 */
for (uint32_t arg_index = 0;
arg_index < arguments_number && ecma_is_completion_value_empty (ret_value);
++arg_index)
{
/* 5a */
/* 5b */
ecma_string_t *string_temp = string_to_return;
ECMA_TRY_CATCH (get_arg_string,
ecma_op_to_string (argument_list_p[arg_index]),
ret_value);
string_to_return = ecma_concat_ecma_strings (string_to_return, ecma_get_string_from_value (get_arg_string));
ecma_deref_ecma_string (string_temp);
ECMA_FINALIZE (get_arg_string);
}
/* 6 */
if (ecma_is_completion_value_empty (ret_value))
{
ret_value = ecma_make_normal_completion_value (ecma_make_string_value (string_to_return));
}
else
{
ecma_deref_ecma_string (string_to_return);
}
ECMA_FINALIZE (to_string_val);
ECMA_FINALIZE (check_coercible_val);
return ret_value;
} /* ecma_builtin_string_prototype_object_concat */
/**
* Helper function for string indexOf and lastIndexOf functions
*
* This function implements string indexOf and lastIndexOf with required checks and conversions.
*
* See also:
* ECMA-262 v5, 15.5.4.7
* ECMA-262 v5, 15.5.4.8
*
* Used by:
* - The String.prototype.indexOf routine.
* - The String.prototype.lastIndexOf routine.
*
* @return uint32_t - (last) index of search string
*/
ecma_value_t
ecma_builtin_helper_string_prototype_object_index_of (ecma_value_t this_arg, /**< this argument */
ecma_value_t arg1, /**< routine's first argument */
ecma_value_t arg2, /**< routine's second argument */
bool first_index) /**< routine's third argument */
{
ecma_value_t ret_value = ecma_make_simple_value (ECMA_SIMPLE_VALUE_EMPTY);
/* 1 */
ECMA_TRY_CATCH (check_coercible_val,
ecma_op_check_object_coercible (this_arg),
ret_value);
/* 2 */
ECMA_TRY_CATCH (to_str_val,
ecma_op_to_string (this_arg),
ret_value);
/* 3 */
ECMA_TRY_CATCH (search_str_val,
ecma_op_to_string (arg1),
ret_value);
/* 4 */
ECMA_OP_TO_NUMBER_TRY_CATCH (pos_num,
arg2,
ret_value);
/* 5 (indexOf) -- 6 (lastIndexOf) */
ecma_string_t *original_str_p = ecma_get_string_from_value (to_str_val);
const ecma_length_t original_len = ecma_string_get_length (original_str_p);
/* 4b, 6 (indexOf) - 4b, 5, 7 (lastIndexOf) */
ecma_length_t start = ecma_builtin_helper_string_index_normalize (pos_num, original_len, first_index);
/* 7 (indexOf) -- 8 (lastIndexOf) */
ecma_string_t *search_str_p = ecma_get_string_from_value (search_str_val);
ecma_number_t ret_num = ECMA_NUMBER_MINUS_ONE;
/* 8 (indexOf) -- 9 (lastIndexOf) */
ecma_length_t index_of = 0;
if (ecma_builtin_helper_string_find_index (original_str_p, search_str_p, first_index, start, &index_of))
{
ret_num = ((ecma_number_t) index_of);
}
ret_value = ecma_make_number_value (ret_num);
ECMA_OP_TO_NUMBER_FINALIZE (pos_num);
ECMA_FINALIZE (search_str_val);
ECMA_FINALIZE (to_str_val);
ECMA_FINALIZE (check_coercible_val);
return ret_value;
} /* ecma_builtin_helper_string_prototype_object_index_of */
/**
* The Object.prototype object's 'hasOwnProperty' routine
*
* See also:
* ECMA-262 v5, 15.2.4.5
*
* @return ecma value
* Returned value must be freed with ecma_free_value.
*/
static ecma_value_t
ecma_builtin_object_prototype_object_has_own_property (ecma_value_t this_arg, /**< this argument */
ecma_value_t arg) /**< first argument */
{
ecma_value_t return_value = ecma_make_simple_value (ECMA_SIMPLE_VALUE_EMPTY);
/* 1. */
ECMA_TRY_CATCH (to_string_val,
ecma_op_to_string (arg),
return_value);
/* 2. */
ECMA_TRY_CATCH (obj_val,
ecma_op_to_object (this_arg),
return_value);
ecma_string_t *property_name_string_p = ecma_get_string_from_value (to_string_val);
ecma_object_t *obj_p = ecma_get_object_from_value (obj_val);
/* 3. */
return_value = ecma_make_boolean_value (ecma_op_object_has_own_property (obj_p, property_name_string_p));
ECMA_FINALIZE (obj_val);
ECMA_FINALIZE (to_string_val);
return return_value;
} /* ecma_builtin_object_prototype_object_has_own_property */
/**
* 'in' opcode handler.
*
* See also: ECMA-262 v5, 11.8.7
*
* @return ecma value
* returned value must be freed with ecma_free_value.
*/
ecma_value_t
opfunc_in (ecma_value_t left_value, /**< left value */
ecma_value_t right_value) /**< right value */
{
if (!ecma_is_value_object (right_value))
{
return ecma_raise_type_error (ECMA_ERR_MSG ("Expected an object in 'in' check."));
}
bool to_string = !ecma_is_value_string (left_value);
if (to_string)
{
left_value = ecma_op_to_string (left_value);
if (ECMA_IS_VALUE_ERROR (left_value))
{
return left_value;
}
}
ecma_string_t *left_value_prop_name_p = ecma_get_string_from_value (left_value);
ecma_object_t *right_value_obj_p = ecma_get_object_from_value (right_value);
ecma_value_t result = ecma_make_boolean_value (ecma_op_object_has_property (right_value_obj_p,
left_value_prop_name_p));
if (to_string)
{
ecma_free_value (left_value);
}
return result;
} /* opfunc_in */
/**
* Handle calling [[Call]] of a built-in error object
*
* @return ecma value
*/
ecma_value_t
ecma_builtin_helper_error_dispatch_call (ecma_standard_error_t error_type, /**< native error type */
const ecma_value_t *arguments_list_p, /**< arguments list */
ecma_length_t arguments_list_len) /**< number of arguments */
{
JERRY_ASSERT (arguments_list_len == 0 || arguments_list_p != NULL);
if (arguments_list_len != 0
&& !ecma_is_value_undefined (arguments_list_p[0]))
{
ecma_value_t ret_value = ECMA_VALUE_EMPTY;
ECMA_TRY_CATCH (msg_str_value,
ecma_op_to_string (arguments_list_p[0]),
ret_value);
ecma_string_t *message_string_p = ecma_get_string_from_value (msg_str_value);
ecma_object_t *new_error_object_p = ecma_new_standard_error_with_message (error_type,
message_string_p);
ret_value = ecma_make_object_value (new_error_object_p);
ECMA_FINALIZE (msg_str_value);
return ret_value;
}
else
{
ecma_object_t *new_error_object_p = ecma_new_standard_error (error_type);
return ecma_make_object_value (new_error_object_p);
}
} /* ecma_builtin_helper_error_dispatch_call */
/**
* Free the ecma value
*/
void
ecma_free_value (ecma_value_t value) /**< value description */
{
switch (ecma_get_value_type_field (value))
{
case ECMA_TYPE_SIMPLE:
{
/* doesn't hold additional memory */
break;
}
case ECMA_TYPE_NUMBER:
{
ecma_number_t *number_p = ecma_get_number_from_value (value);
ecma_dealloc_number (number_p);
break;
}
case ECMA_TYPE_STRING:
{
ecma_string_t *string_p = ecma_get_string_from_value (value);
ecma_deref_ecma_string (string_p);
break;
}
case ECMA_TYPE_OBJECT:
{
ecma_deref_object (ecma_get_object_from_value (value));
break;
}
}
} /* ecma_free_value */
/**
* 'in' opcode handler.
*
* See also: ECMA-262 v5, 11.8.7
*
* @return ecma value
* returned value must be freed with ecma_free_value.
*/
ecma_value_t
opfunc_in (ecma_value_t left_value, /**< left value */
ecma_value_t right_value) /**< right value */
{
ecma_value_t ret_value = ecma_make_simple_value (ECMA_SIMPLE_VALUE_EMPTY);
if (!ecma_is_value_object (right_value))
{
ret_value = ecma_raise_type_error (ECMA_ERR_MSG (""));
}
else
{
ECMA_TRY_CATCH (str_left_value, ecma_op_to_string (left_value), ret_value);
ecma_string_t *left_value_prop_name_p = ecma_get_string_from_value (str_left_value);
ecma_object_t *right_value_obj_p = ecma_get_object_from_value (right_value);
if (ecma_op_object_get_property (right_value_obj_p, left_value_prop_name_p) != NULL)
{
ret_value = ecma_make_simple_value (ECMA_SIMPLE_VALUE_TRUE);
}
else
{
ret_value = ecma_make_simple_value (ECMA_SIMPLE_VALUE_FALSE);
}
ECMA_FINALIZE (str_left_value);
}
return ret_value;
} /* opfunc_in */
/**
* Handle calling [[Call]] of built-in SyntaxError object
*
* @return ecma value
*/
ecma_value_t
ecma_builtin_syntax_error_dispatch_call (const ecma_value_t *arguments_list_p, /**< arguments list */
ecma_length_t arguments_list_len) /**< number of arguments */
{
JERRY_ASSERT (arguments_list_len == 0 || arguments_list_p != NULL);
if (arguments_list_len != 0
&& !ecma_is_value_undefined (arguments_list_p[0]))
{
ecma_value_t ret_value = ecma_make_simple_value (ECMA_SIMPLE_VALUE_EMPTY);
ECMA_TRY_CATCH (msg_str_value,
ecma_op_to_string (arguments_list_p[0]),
ret_value);
ecma_string_t *message_string_p = ecma_get_string_from_value (msg_str_value);
ecma_object_t *new_error_object_p = ecma_new_standard_error_with_message (ECMA_ERROR_SYNTAX,
message_string_p);
ret_value = ecma_make_object_value (new_error_object_p);
ECMA_FINALIZE (msg_str_value);
return ret_value;
}
else
{
ecma_object_t *new_error_object_p = ecma_new_standard_error (ECMA_ERROR_SYNTAX);
return ecma_make_object_value (new_error_object_p);
}
} /* ecma_builtin_syntax_error_dispatch_call */
/**
* The String.prototype object's 'localeCompare' routine
*
* See also:
* ECMA-262 v5, 15.5.4.9
*
* @return completion value
* Returned value must be freed with ecma_free_completion_value.
*/
static ecma_completion_value_t
ecma_builtin_string_prototype_object_locale_compare (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 (this_check_coercible_val,
ecma_op_check_object_coercible (this_arg),
ret_value);
/* 2. */
ECMA_TRY_CATCH (this_to_string_val,
ecma_op_to_string (this_arg),
ret_value);
/* 3. */
ECMA_TRY_CATCH (arg_to_string_val,
ecma_op_to_string (arg),
ret_value);
ecma_string_t *this_string_p = ecma_get_string_from_value (this_to_string_val);
ecma_string_t *arg_string_p = ecma_get_string_from_value (arg_to_string_val);
ecma_number_t *result_p = ecma_alloc_number ();
if (ecma_compare_ecma_strings_relational (this_string_p, arg_string_p))
{
*result_p = ecma_int32_to_number (-1);
}
else if (!ecma_compare_ecma_strings (this_string_p, arg_string_p))
{
*result_p = ecma_int32_to_number (1);
}
else
{
*result_p = ecma_int32_to_number (0);
}
ret_value = ecma_make_normal_completion_value (ecma_make_number_value (result_p));
ECMA_FINALIZE (arg_to_string_val);
ECMA_FINALIZE (this_to_string_val);
ECMA_FINALIZE (this_check_coercible_val);
return ret_value;
} /* ecma_builtin_string_prototype_object_locale_compare */
/**
* The Object object's 'isSealed' routine
*
* See also:
* ECMA-262 v5, 15.2.3.11
*
* @return completion value
* Returned value must be freed with ecma_free_completion_value.
*/
static ecma_completion_value_t
ecma_builtin_object_object_is_sealed (ecma_value_t this_arg __attr_unused___, /**< 'this' argument */
ecma_value_t arg) /**< routine's argument */
{
ecma_completion_value_t ret_value = ecma_make_empty_completion_value ();
// 1.
if (!ecma_is_value_object (arg))
{
ret_value = ecma_make_throw_obj_completion_value (ecma_new_standard_error (ECMA_ERROR_TYPE));
}
else
{
ecma_object_t *obj_p = ecma_get_object_from_value (arg);
bool is_sealed;
// 3.
if (ecma_get_object_extensible (obj_p))
{
is_sealed = false;
}
else
{
/* the value can be updated in the loop below */
is_sealed = true;
// 2.
ecma_collection_header_t *props_p = ecma_op_object_get_property_names (obj_p, false, false, false);
ecma_collection_iterator_t iter;
ecma_collection_iterator_init (&iter, props_p);
while (ecma_collection_iterator_next (&iter))
{
ecma_string_t *property_name_p = ecma_get_string_from_value (*iter.current_value_p);
// 2.a
ecma_property_t *property_p = ecma_op_object_get_own_property (obj_p, property_name_p);
// 2.b
if (ecma_is_property_configurable (property_p))
{
is_sealed = false;
break;
}
}
ecma_free_values_collection (props_p, true);
}
// 4.
ret_value = ecma_make_simple_completion_value (is_sealed
? ECMA_SIMPLE_VALUE_TRUE
: ECMA_SIMPLE_VALUE_FALSE);
}
return ret_value;
} /* ecma_builtin_object_object_is_sealed */
/**
* Update getter or setter for object literals.
*/
void
opfunc_set_accessor (bool is_getter, /**< is getter accessor */
ecma_value_t object, /**< object value */
ecma_value_t accessor_name, /**< accessor name value */
ecma_value_t accessor) /**< accessor value */
{
ecma_object_t *object_p = ecma_get_object_from_value (object);
JERRY_ASSERT (ecma_is_value_string (accessor_name) || ecma_is_value_number (accessor_name));
ecma_string_t *accessor_name_p = ecma_get_string_from_value (ecma_op_to_string (accessor_name));
ecma_property_t *property_p = ecma_find_named_property (object_p, accessor_name_p);
if (property_p != NULL
&& ECMA_PROPERTY_GET_TYPE (*property_p) != ECMA_PROPERTY_TYPE_NAMEDACCESSOR)
{
ecma_delete_property (object_p, ECMA_PROPERTY_VALUE_PTR (property_p));
property_p = NULL;
}
if (property_p == NULL)
{
ecma_object_t *getter_func_p = NULL;
ecma_object_t *setter_func_p = NULL;
if (is_getter)
{
getter_func_p = ecma_get_object_from_value (accessor);
}
else
{
setter_func_p = ecma_get_object_from_value (accessor);
}
ecma_create_named_accessor_property (object_p,
accessor_name_p,
getter_func_p,
setter_func_p,
ECMA_PROPERTY_CONFIGURABLE_ENUMERABLE,
NULL);
}
else if (is_getter)
{
ecma_object_t *getter_func_p = ecma_get_object_from_value (accessor);
ecma_set_named_accessor_property_getter (object_p,
ECMA_PROPERTY_VALUE_PTR (property_p),
getter_func_p);
}
else
{
ecma_object_t *setter_func_p = ecma_get_object_from_value (accessor);
ecma_set_named_accessor_property_setter (object_p,
ECMA_PROPERTY_VALUE_PTR (property_p),
setter_func_p);
}
ecma_deref_ecma_string (accessor_name_p);
} /* opfunc_set_accessor */
/**
* The String.prototype object's 'charCodeAt' routine
*
* See also:
* ECMA-262 v5, 15.5.4.5
*
* @return completion value
* Returned value must be freed with ecma_free_completion_value.
*/
static ecma_completion_value_t
ecma_builtin_string_prototype_object_char_code_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);
ecma_number_t *ret_num_p = ecma_alloc_number ();
/* 5 */
// When index_num is NaN, then the first two comparisons are false
if (index_num < 0 || index_num >= len || (ecma_number_is_nan (index_num) && !len))
{
*ret_num_p = ecma_number_make_nan ();
}
else
{
/* 6 */
/*
* String length is currently uit32_t, but index_num may be bigger,
* ToInteger performs floor, while ToUInt32 performs modulo 2^32,
* hence after the check 0 <= index_num < len we assume to_uint32 can be used.
* We assume to_uint32 (NaN) is 0.
*/
JERRY_ASSERT (ecma_number_is_nan (index_num) || ecma_number_to_uint32 (index_num) == ecma_number_trunc (index_num));
ecma_char_t new_ecma_char = ecma_string_get_char_at_pos (original_string_p, ecma_number_to_uint32 (index_num));
*ret_num_p = ecma_uint32_to_number (new_ecma_char);
}
ecma_value_t new_value = ecma_make_number_value (ret_num_p);
ret_value = ecma_make_normal_completion_value (new_value);
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_code_at */
/**
* ToString operation.
*
* See also:
* ECMA-262 v5, 9.8
*
* @return completion value
* Returned value must be freed with ecma_free_completion_value
*/
ecma_completion_value_t
ecma_op_to_string (ecma_value_t value) /**< ecma-value */
{
ecma_check_value_type_is_spec_defined (value);
if (unlikely (ecma_is_value_object (value)))
{
ecma_completion_value_t ret_value = ecma_make_empty_completion_value ();
ECMA_TRY_CATCH (prim_value,
ecma_op_to_primitive (value, ECMA_PREFERRED_TYPE_STRING),
ret_value);
ret_value = ecma_op_to_string (prim_value);
ECMA_FINALIZE (prim_value);
return ret_value;
}
else
{
ecma_string_t *res_p = NULL;
if (ecma_is_value_string (value))
{
res_p = ecma_get_string_from_value (value);
res_p = ecma_copy_or_ref_ecma_string (res_p);
}
else if (ecma_is_value_number (value))
{
ecma_number_t *num_p = ecma_get_number_from_value (value);
res_p = ecma_new_ecma_string_from_number (*num_p);
}
else if (ecma_is_value_undefined (value))
{
res_p = ecma_get_magic_string (LIT_MAGIC_STRING_UNDEFINED);
}
else if (ecma_is_value_null (value))
{
res_p = ecma_get_magic_string (LIT_MAGIC_STRING_NULL);
}
else
{
JERRY_ASSERT (ecma_is_value_boolean (value));
if (ecma_is_value_true (value))
{
res_p = ecma_get_magic_string (LIT_MAGIC_STRING_TRUE);
}
else
{
res_p = ecma_get_magic_string (LIT_MAGIC_STRING_FALSE);
}
}
return ecma_make_normal_completion_value (ecma_make_string_value (res_p));
}
} /* ecma_op_to_string */
/**
* The String.prototype object's 'trim' routine
*
* See also:
* ECMA-262 v5, 15.5.4.20
*
* @return completion value
* Returned value must be freed with ecma_free_completion_value.
*/
static ecma_completion_value_t
ecma_builtin_string_prototype_object_trim (ecma_value_t this_arg) /**< this 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);
ecma_string_t *original_string_p = ecma_get_string_from_value (to_string_val);
/* 3 */
const lit_utf8_size_t size = ecma_string_get_size (original_string_p);
const ecma_length_t length = ecma_string_get_size (original_string_p);
/* Workaround: avoid repeated call of ecma_string_get_char_at_pos() because its overhead */
lit_utf8_byte_t *original_utf8_str_p = (lit_utf8_byte_t *) mem_heap_alloc_block (size + 1,
MEM_HEAP_ALLOC_SHORT_TERM);
ecma_string_to_utf8_string (original_string_p, original_utf8_str_p, (ssize_t) size);
uint32_t prefix = 0, postfix = 0;
uint32_t new_len = 0;
while (prefix < length && isspace (lit_utf8_string_code_unit_at (original_utf8_str_p, size, prefix)))
{
prefix++;
}
while (postfix < length - prefix && isspace (lit_utf8_string_code_unit_at (original_utf8_str_p,
size,
length - postfix - 1)))
{
postfix++;
}
new_len = prefix < size ? size - prefix - postfix : 0;
ecma_string_t *new_str_p = ecma_string_substr (original_string_p, prefix, prefix + new_len);
/* 4 */
ret_value = ecma_make_normal_completion_value (ecma_make_string_value (new_str_p));
mem_heap_free_block (original_utf8_str_p);
ECMA_FINALIZE (to_string_val);
ECMA_FINALIZE (check_coercible_val);
return ret_value;
} /* ecma_builtin_string_prototype_object_trim */
/**
* Update getter or setter for object literals.
*/
void
opfunc_set_accessor (bool is_getter, /**< is getter accessor */
ecma_value_t object, /**< object value */
ecma_value_t accessor_name, /**< accessor name value */
ecma_value_t accessor) /**< accessor value */
{
ecma_object_t *object_p = ecma_get_object_from_value (object);
ecma_string_t *accessor_name_p = ecma_get_string_from_value (accessor_name);
ecma_property_t *property_p = ecma_find_named_property (object_p, accessor_name_p);
if (property_p != NULL && property_p->type != ECMA_PROPERTY_NAMEDACCESSOR)
{
ecma_delete_property (object_p, property_p);
property_p = NULL;
}
if (property_p == NULL)
{
ecma_object_t *getter_func_p = NULL;
ecma_object_t *setter_func_p = NULL;
if (is_getter)
{
getter_func_p = ecma_get_object_from_value (accessor);
}
else
{
setter_func_p = ecma_get_object_from_value (accessor);
}
ecma_create_named_accessor_property (object_p,
accessor_name_p,
getter_func_p,
setter_func_p,
true,
true);
}
else if (is_getter)
{
ecma_object_t *getter_func_p = ecma_get_object_from_value (accessor);
ecma_set_named_accessor_property_getter (object_p,
property_p,
getter_func_p);
}
else
{
ecma_object_t *setter_func_p = ecma_get_object_from_value (accessor);
ecma_set_named_accessor_property_setter (object_p,
property_p,
setter_func_p);
}
} /* opfunc_set_accessor */
/**
* Copy ecma value.
*
* Note:
* Operation algorithm.
* switch (valuetype)
* case simple:
* simply return the value as it was passed;
* case number:
* copy the number
* and return new ecma value
* pointing to copy of the number;
* case string:
* increase reference counter of the string
* and return the value as it was passed.
* case object;
* increase reference counter of the object if do_ref_if_object is true
* and return the value as it was passed.
*
* @return See note.
*/
ecma_value_t
ecma_copy_value (ecma_value_t value, /**< ecma value */
bool do_ref_if_object) /**< if the value is object value,
increment reference counter of the object */
{
ecma_value_t value_copy = 0;
switch (ecma_get_value_type_field (value))
{
case ECMA_TYPE_SIMPLE:
{
value_copy = value;
break;
}
case ECMA_TYPE_NUMBER:
{
ecma_number_t *num_p = ecma_get_number_from_value (value);
ecma_number_t *number_copy_p = ecma_alloc_number ();
*number_copy_p = *num_p;
value_copy = ecma_make_number_value (number_copy_p);
break;
}
case ECMA_TYPE_STRING:
{
ecma_string_t *string_p = ecma_get_string_from_value (value);
string_p = ecma_copy_or_ref_ecma_string (string_p);
value_copy = ecma_make_string_value (string_p);
break;
}
case ECMA_TYPE_OBJECT:
{
ecma_object_t *obj_p = ecma_get_object_from_value (value);
if (do_ref_if_object)
{
ecma_ref_object (obj_p);
}
value_copy = value;
break;
}
}
return value_copy;
} /* ecma_copy_value */
/**
* ToBoolean operation.
*
* See also:
* ECMA-262 v5, 9.2
*
* @return completion value
* Returned value is simple and so need not be freed.
* However, ecma_free_completion_value may be called for it, but it is a no-op.
*/
ecma_completion_value_t
ecma_op_to_boolean (ecma_value_t value) /**< ecma-value */
{
ecma_check_value_type_is_spec_defined (value);
ecma_simple_value_t ret_value;
if (ecma_is_value_boolean (value))
{
ret_value = (ecma_is_value_true (value) ?
ECMA_SIMPLE_VALUE_TRUE : ECMA_SIMPLE_VALUE_FALSE);
}
else if (ecma_is_value_undefined (value)
|| ecma_is_value_null (value))
{
ret_value = ECMA_SIMPLE_VALUE_FALSE;
}
else if (ecma_is_value_number (value))
{
ecma_number_t *num_p = ecma_get_number_from_value (value);
if (ecma_number_is_nan (*num_p)
|| ecma_number_is_zero (*num_p))
{
ret_value = ECMA_SIMPLE_VALUE_FALSE;
}
else
{
ret_value = ECMA_SIMPLE_VALUE_TRUE;
}
}
else if (ecma_is_value_string (value))
{
ecma_string_t *str_p = ecma_get_string_from_value (value);
if (ecma_string_get_length (str_p) == 0)
{
ret_value = ECMA_SIMPLE_VALUE_FALSE;
}
else
{
ret_value = ECMA_SIMPLE_VALUE_TRUE;
}
}
else
{
JERRY_ASSERT (ecma_is_value_object (value));
ret_value = ECMA_SIMPLE_VALUE_TRUE;
}
return ecma_make_simple_completion_value (ret_value);
} /* ecma_op_to_boolean */
/**
* 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 */
/**
* Send string representation of exception to the client.
*
* @return true - if the data sent successfully to the debugger client,
* false - otherwise
*/
bool
jerry_debugger_send_exception_string (void)
{
ecma_string_t *string_p = NULL;
ecma_value_t exception_value = JERRY_CONTEXT (error_value);
if (ecma_is_value_object (exception_value))
{
string_p = jerry_debugger_exception_object_to_string (exception_value);
if (string_p == NULL)
{
string_p = ecma_get_string_from_value (ecma_builtin_helper_object_to_string (exception_value));
}
}
else if (ecma_is_value_string (exception_value))
{
string_p = ecma_get_string_from_value (exception_value);
ecma_ref_ecma_string (string_p);
}
else
{
exception_value = ecma_op_to_string (exception_value);
string_p = ecma_get_string_from_value (exception_value);
}
ECMA_STRING_TO_UTF8_STRING (string_p, string_data_p, string_size);
bool result = jerry_debugger_send_string (JERRY_DEBUGGER_EXCEPTION_STR,
JERRY_DEBUGGER_NO_SUBTYPE,
string_data_p,
string_size);
ECMA_FINALIZE_UTF8_STRING (string_data_p, string_size);
ecma_deref_ecma_string (string_p);
return result;
} /* jerry_debugger_send_exception_string */
/**
* Check the string value existance in the collection.
*
* Used by:
* - ecma_builtin_json_stringify step 4.b.ii.5
*
* @return true, if the string is already in the collection.
*/
bool
ecma_has_string_value_in_collection (ecma_collection_header_t *collection_p, /**< collection */
ecma_value_t string_value) /**< string value */
{
JERRY_ASSERT (ecma_is_value_string (string_value));
ecma_string_t *string_p = ecma_get_string_from_value (string_value);
ecma_collection_iterator_t iterator;
ecma_collection_iterator_init (&iterator, collection_p);
while (ecma_collection_iterator_next (&iterator))
{
ecma_value_t value = *iterator.current_value_p;
ecma_string_t *current_p = ecma_get_string_from_value (value);
if (ecma_compare_ecma_strings (current_p, string_p))
{
return true;
}
}
return false;
} /* ecma_has_string_value_in_collection*/
/**
* The Object object's 'getOwnPropertyDescriptor' routine
*
* See also:
* ECMA-262 v5, 15.2.3.3
*
* @return completion value
* Returned value must be freed with ecma_free_completion_value.
*/
static ecma_completion_value_t
ecma_builtin_object_object_get_own_property_descriptor (ecma_value_t this_arg __attr_unused___, /**< 'this' argument */
ecma_value_t arg1, /**< routine's first argument */
ecma_value_t arg2) /**< routine's second argument */
{
ecma_completion_value_t ret_value = ecma_make_empty_completion_value ();
// 1.
if (!ecma_is_value_object (arg1))
{
ret_value = ecma_make_throw_obj_completion_value (ecma_new_standard_error (ECMA_ERROR_TYPE));
return ret_value;
}
ecma_object_t *obj_p = ecma_get_object_from_value (arg1);
// 2.
ECMA_TRY_CATCH (name_str_value,
ecma_op_to_string (arg2),
ret_value);
ecma_string_t *name_str_p = ecma_get_string_from_value (name_str_value);
// 3.
ecma_property_t *prop_p = ecma_op_object_get_own_property (obj_p, name_str_p);
if (prop_p != NULL)
{
ecma_property_descriptor_t prop_desc = ecma_get_property_descriptor_from_property (prop_p);
// 4.
ecma_object_t* desc_obj_p = ecma_op_from_property_descriptor (&prop_desc);
ecma_free_property_descriptor (&prop_desc);
ret_value = ecma_make_normal_completion_value (ecma_make_object_value (desc_obj_p));
}
else
{
ret_value = ecma_make_simple_completion_value (ECMA_SIMPLE_VALUE_UNDEFINED);
}
ECMA_FINALIZE (name_str_value);
return ret_value;
} /* ecma_builtin_object_object_get_own_property_descriptor */
/**
* 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 */
/**
* The Object object's 'defineProperty' routine
*
* See also:
* ECMA-262 v5, 15.2.3.6
*
* @return completion value
* Returned value must be freed with ecma_free_completion_value.
*/
static ecma_completion_value_t
ecma_builtin_object_object_define_property (ecma_value_t this_arg __attr_unused___, /**< 'this' argument */
ecma_value_t arg1, /**< routine's first argument */
ecma_value_t arg2, /**< routine's second argument */
ecma_value_t arg3) /**< routine's third argument */
{
ecma_completion_value_t ret_value = ecma_make_empty_completion_value ();
if (!ecma_is_value_object (arg1))
{
ret_value = ecma_make_throw_obj_completion_value (ecma_new_standard_error (ECMA_ERROR_TYPE));
}
else
{
ecma_object_t *obj_p = ecma_get_object_from_value (arg1);
ECMA_TRY_CATCH (name_str_value,
ecma_op_to_string (arg2),
ret_value);
ecma_string_t *name_str_p = ecma_get_string_from_value (name_str_value);
ecma_property_descriptor_t prop_desc;
ECMA_TRY_CATCH (conv_result,
ecma_op_to_property_descriptor (arg3, &prop_desc),
ret_value);
ECMA_TRY_CATCH (define_own_prop_ret,
ecma_op_object_define_own_property (obj_p,
name_str_p,
&prop_desc,
true),
ret_value);
ret_value = ecma_make_normal_completion_value (ecma_copy_value (arg1, true));
ECMA_FINALIZE (define_own_prop_ret);
ecma_free_property_descriptor (&prop_desc);
ECMA_FINALIZE (conv_result);
ECMA_FINALIZE (name_str_value);
}
return ret_value;
} /* ecma_builtin_object_object_define_property */
/**
* Deletes an object property.
*
* @return ecma value
* Returned value must be freed with ecma_free_value
*/
ecma_value_t
vm_op_delete_prop (ecma_value_t object, /**< base object */
ecma_value_t property, /**< property name */
bool is_strict) /**< strict mode */
{
ecma_value_t completion_value = ecma_make_simple_value (ECMA_SIMPLE_VALUE_EMPTY);
if (ecma_is_value_undefined (object))
{
completion_value = ecma_make_simple_value (ECMA_SIMPLE_VALUE_TRUE);
}
else
{
completion_value = ecma_make_simple_value (ECMA_SIMPLE_VALUE_EMPTY);
ECMA_TRY_CATCH (check_coercible_ret,
ecma_op_check_object_coercible (object),
completion_value);
ECMA_TRY_CATCH (str_name_value,
ecma_op_to_string (property),
completion_value);
JERRY_ASSERT (ecma_is_value_string (str_name_value));
ecma_string_t *name_string_p = ecma_get_string_from_value (str_name_value);
ECMA_TRY_CATCH (obj_value, ecma_op_to_object (object), completion_value);
JERRY_ASSERT (ecma_is_value_object (obj_value));
ecma_object_t *obj_p = ecma_get_object_from_value (obj_value);
JERRY_ASSERT (!ecma_is_lexical_environment (obj_p));
ECMA_TRY_CATCH (delete_op_ret_val,
ecma_op_object_delete (obj_p, name_string_p, is_strict),
completion_value);
completion_value = delete_op_ret_val;
ECMA_FINALIZE (delete_op_ret_val);
ECMA_FINALIZE (obj_value);
ECMA_FINALIZE (str_name_value);
ECMA_FINALIZE (check_coercible_ret);
}
return completion_value;
} /* vm_op_delete_prop */
/**
* The Object.prototype object's 'propertyIsEnumerable' routine
*
* See also:
* ECMA-262 v5, 15.2.4.7
*
* @return ecma value
* Returned value must be freed with ecma_free_value.
*/
static ecma_value_t
ecma_builtin_object_prototype_object_property_is_enumerable (ecma_value_t this_arg, /**< this argument */
ecma_value_t arg) /**< routine's first argument */
{
ecma_value_t return_value = ecma_make_simple_value (ECMA_SIMPLE_VALUE_EMPTY);
/* 1. */
ECMA_TRY_CATCH (to_string_val,
ecma_op_to_string (arg),
return_value);
/* 2. */
ECMA_TRY_CATCH (obj_val,
ecma_op_to_object (this_arg),
return_value);
ecma_string_t *property_name_string_p = ecma_get_string_from_value (to_string_val);
ecma_object_t *obj_p = ecma_get_object_from_value (obj_val);
/* 3. */
ecma_property_t property = ecma_op_object_get_own_property (obj_p,
property_name_string_p,
NULL,
ECMA_PROPERTY_GET_NO_OPTIONS);
/* 4. */
if (property != ECMA_PROPERTY_TYPE_NOT_FOUND)
{
bool is_enumerable = ecma_is_property_enumerable (property);
return_value = ecma_make_boolean_value (is_enumerable);
}
else
{
return_value = ecma_make_simple_value (ECMA_SIMPLE_VALUE_FALSE);
}
ECMA_FINALIZE (obj_val);
ECMA_FINALIZE (to_string_val);
return return_value;
} /* ecma_builtin_object_prototype_object_property_is_enumerable */
/**
* The Object.prototype object's 'propertyIsEnumerable' routine
*
* See also:
* ECMA-262 v5, 15.2.4.7
*
* @return completion value
* Returned value must be freed with ecma_free_completion_value.
*/
static ecma_completion_value_t
ecma_builtin_object_prototype_object_property_is_enumerable (ecma_value_t this_arg, /**< this argument */
ecma_value_t arg) /**< routine's first argument */
{
ecma_completion_value_t return_value = ecma_make_empty_completion_value ();
/* 1. */
ECMA_TRY_CATCH (to_string_val,
ecma_op_to_string (arg),
return_value);
/* 2. */
ECMA_TRY_CATCH (obj_val,
ecma_op_to_object (this_arg),
return_value);
ecma_string_t *property_name_string_p = ecma_get_string_from_value (to_string_val);
ecma_object_t *obj_p = ecma_get_object_from_value (obj_val);
/* 3. */
ecma_property_t *property_p = ecma_op_object_get_own_property (obj_p, property_name_string_p);
/* 4. */
if (property_p != NULL)
{
bool is_enumerable = ecma_is_property_enumerable (property_p);
return_value = ecma_make_simple_completion_value (is_enumerable
? ECMA_SIMPLE_VALUE_TRUE
: ECMA_SIMPLE_VALUE_FALSE);
}
else
{
return_value = ecma_make_simple_completion_value (ECMA_SIMPLE_VALUE_FALSE);
}
ECMA_FINALIZE (obj_val);
ECMA_FINALIZE (to_string_val);
return return_value;
} /* ecma_builtin_object_prototype_object_property_is_enumerable */
/**
* List names of a String object's lazy instantiated properties
*
* @return string values collection
*/
void
ecma_op_string_list_lazy_property_names (ecma_object_t *obj_p, /**< a String object */
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 */
{
JERRY_ASSERT (ecma_get_object_type (obj_p) == ECMA_OBJECT_TYPE_CLASS);
ecma_collection_header_t *for_enumerable_p = main_collection_p;
ecma_collection_header_t *for_non_enumerable_p = separate_enumerable ? non_enum_collection_p : main_collection_p;
ecma_extended_object_t *ext_object_p = (ecma_extended_object_t *) obj_p;
JERRY_ASSERT (ext_object_p->u.class_prop.class_id == LIT_MAGIC_STRING_STRING_UL);
ecma_string_t *prim_value_str_p = ecma_get_string_from_value (ext_object_p->u.class_prop.u.value);
ecma_length_t length = ecma_string_get_length (prim_value_str_p);
for (ecma_length_t i = 0; i < length; i++)
{
ecma_string_t *name_p = ecma_new_ecma_string_from_uint32 (i);
/* the properties are enumerable (ECMA-262 v5, 15.5.5.2.9) */
ecma_append_to_values_collection (for_enumerable_p, ecma_make_string_value (name_p), 0);
ecma_deref_ecma_string (name_p);
}
ecma_append_to_values_collection (for_non_enumerable_p,
ecma_make_magic_string_value (LIT_MAGIC_STRING_LENGTH),
0);
} /* ecma_op_string_list_lazy_property_names */
/**
* Get value of function's argument mapped to index of Arguments object.
*
* Note:
* The procedure emulates execution of function described by MakeArgGetter
*
* @return ecma value
* Returned value must be freed with ecma_free_value
*/
static ecma_value_t
ecma_arguments_get_mapped_arg_value (ecma_object_t *map_p, /**< [[ParametersMap]] object */
ecma_property_t *arg_name_prop_p) /**< property of [[ParametersMap]]
corresponding to index and value
equal to mapped argument's name */
{
ecma_property_t *scope_prop_p = ecma_get_internal_property (map_p, ECMA_INTERNAL_PROPERTY_SCOPE);
ecma_object_t *lex_env_p = ECMA_GET_INTERNAL_VALUE_POINTER (ecma_object_t,
ECMA_PROPERTY_VALUE_PTR (scope_prop_p)->value);
JERRY_ASSERT (lex_env_p != NULL
&& ecma_is_lexical_environment (lex_env_p));
ecma_value_t arg_name_prop_value = ecma_get_named_data_property_value (arg_name_prop_p);
ecma_string_t *arg_name_p = ecma_get_string_from_value (arg_name_prop_value);
ecma_value_t completion = ecma_op_get_binding_value (lex_env_p, arg_name_p, true);
JERRY_ASSERT (!ECMA_IS_VALUE_ERROR (completion));
return completion;
} /* ecma_arguments_get_mapped_arg_value */
/**
* Handle calling [[Construct]] of built-in Function object
*
* See also:
* ECMA-262 v5, 15.3.
*
* @return completion-value
*/
ecma_completion_value_t
ecma_builtin_function_dispatch_construct (const ecma_value_t *arguments_list_p, /**< arguments list */
ecma_length_t arguments_list_len) /**< number of arguments */
{
JERRY_ASSERT (arguments_list_len == 0 || arguments_list_p != NULL);
ecma_completion_value_t ret_value = ecma_make_empty_completion_value ();
ECMA_TRY_CATCH (arguments_value,
ecma_builtin_function_helper_get_function_expression (arguments_list_p,
arguments_list_len),
ret_value);
ecma_string_t *function_expression_p = ecma_get_string_from_value (arguments_value);
ret_value = ecma_op_eval (function_expression_p, false, false);
ECMA_FINALIZE (arguments_value);
return ret_value;
} /* ecma_builtin_function_dispatch_construct */
/**
* List names of a String object's lazy instantiated properties
*
* See also:
* ecma_op_string_object_get_own_property
*
* @return string values collection
*/
void
ecma_op_string_list_lazy_property_names (ecma_object_t *obj_p, /**< a String object */
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
*/
{
JERRY_ASSERT (ecma_get_object_type (obj_p) == ECMA_OBJECT_TYPE_STRING);
ecma_collection_header_t *for_enumerable_p = main_collection_p;
ecma_collection_header_t *for_non_enumerable_p = separate_enumerable ? main_collection_p : non_enum_collection_p;
JERRY_UNUSED (for_non_enumerable_p);
ecma_property_t *prim_value_prop_p = ecma_get_internal_property (obj_p,
ECMA_INTERNAL_PROPERTY_ECMA_VALUE);
ecma_string_t *prim_value_str_p;
prim_value_str_p = ecma_get_string_from_value (ecma_get_internal_property_value (prim_value_prop_p));
ecma_length_t length = ecma_string_get_length (prim_value_str_p);
for (ecma_length_t i = 0; i < length; i++)
{
ecma_string_t *name_p = ecma_new_ecma_string_from_uint32 (i);
/* the properties are enumerable (ECMA-262 v5, 15.5.5.2.9) */
ecma_append_to_values_collection (for_enumerable_p, ecma_make_string_value (name_p), true);
ecma_deref_ecma_string (name_p);
}
} /* ecma_op_string_list_lazy_property_names */