/**
* 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 */
/**
* 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 */
/**
* 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 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 */
/**
* 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 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 */
/**
* 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 */
/*
* 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_completion_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 firstIndex) /**< routine's third 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_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);
/* 6 */
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);
const lit_utf8_size_t original_size = ecma_string_get_size (original_str_p);
/* 4b, 5, 7 */
ecma_length_t start = ecma_builtin_helper_string_index_normalize (pos_num, original_len, firstIndex);
/* 8 */
ecma_string_t *search_str_p = ecma_get_string_from_value (search_str_val);
const ecma_length_t search_len = ecma_string_get_length (search_str_p);
const lit_utf8_size_t search_size = ecma_string_get_size (search_str_p);
ecma_number_t *ret_num_p = ecma_alloc_number ();
*ret_num_p = ecma_int32_to_number (-1);
/* 9 */
if (search_len <= original_len)
{
if (!search_len)
{
*ret_num_p = ecma_uint32_to_number (firstIndex ? 0 : original_len);
}
else
{
/* create utf8 string from original string and advance to position */
MEM_DEFINE_LOCAL_ARRAY (original_str_utf8_p,
original_size,
lit_utf8_byte_t);
ecma_string_to_utf8_string (original_str_p,
original_str_utf8_p,
(ssize_t) (original_size));
lit_utf8_iterator_t original_it = lit_utf8_iterator_create (original_str_utf8_p, original_size);
ecma_length_t index = start;
lit_utf8_iterator_advance (&original_it, index);
/* create utf8 string from search string */
MEM_DEFINE_LOCAL_ARRAY (search_str_utf8_p,
search_size,
lit_utf8_byte_t);
ecma_string_to_utf8_string (search_str_p,
search_str_utf8_p,
(ssize_t) (search_size));
lit_utf8_iterator_t search_it = lit_utf8_iterator_create (search_str_utf8_p, search_size);
/* iterate original string and try to match at each position */
bool searching = true;
while (searching)
{
/* match as long as possible */
ecma_length_t match_len = 0;
lit_utf8_iterator_t stored_original_it = original_it;
while (match_len < search_len &&
index + match_len < original_len &&
lit_utf8_iterator_read_next (&original_it) == lit_utf8_iterator_read_next (&search_it))
{
match_len++;
}
/* check for match */
if (match_len == search_len)
{
*ret_num_p = ecma_uint32_to_number (index);
break;
}
else
{
/* inc/dec index and update iterators and search condition */
lit_utf8_iterator_seek_bos (&search_it);
original_it = stored_original_it;
if (firstIndex)
{
if ((searching = (index <= original_len - search_len)))
{
lit_utf8_iterator_incr (&original_it);
index++;
}
}
else
{
if ((searching = (index > 0)))
{
lit_utf8_iterator_decr (&original_it);
index--;
}
}
}
}
MEM_FINALIZE_LOCAL_ARRAY (search_str_utf8_p);
MEM_FINALIZE_LOCAL_ARRAY (original_str_utf8_p);
}
}
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 (pos_num);
ECMA_FINALIZE (search_str_val);
ECMA_FINALIZE (to_str_val);
ECMA_FINALIZE (check_coercible_val);
return ret_value;
} /* ecma_builtin_helper_string_index_normalize */
/**
* Helper function to convert a string to upper or lower case.
*
* @return completion value
* Returned value must be freed with ecma_free_completion_value.
*/
static ecma_completion_value_t
ecma_builtin_string_prototype_object_conversion_helper (ecma_value_t this_arg, /**< this argument */
bool lower_case) /**< convert to lower (true)
* or upper (false) case */
{
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_string_t *input_string_p = ecma_get_string_from_value (to_string_val);
lit_utf8_size_t input_size = ecma_string_get_size (input_string_p);
MEM_DEFINE_LOCAL_ARRAY (input_start_p,
input_size,
lit_utf8_byte_t);
ecma_string_to_utf8_string (input_string_p,
input_start_p,
(ssize_t) (input_size));
/*
* The URI encoding has two major phases: first we compute
* the length of the lower case string, then we encode it.
*/
lit_utf8_size_t output_length = 0;
lit_utf8_iterator_t input_iterator = lit_utf8_iterator_create (input_start_p, input_size);
while (!lit_utf8_iterator_is_eos (&input_iterator))
{
ecma_char_t character = lit_utf8_iterator_read_next (&input_iterator);
ecma_char_t character_buffer[LIT_MAXIMUM_OTHER_CASE_LENGTH];
lit_utf8_byte_t utf8_byte_buffer[LIT_UTF8_MAX_BYTES_IN_CODE_POINT];
lit_utf8_size_t character_length;
/*
* We need to keep surrogate pairs. Surrogates are never converted,
* regardless they form a valid pair or not.
*/
if (lit_is_code_unit_high_surrogate (character))
{
ecma_char_t next_character = lit_utf8_iterator_peek_next (&input_iterator);
if (lit_is_code_unit_low_surrogate (next_character))
{
lit_code_point_t surrogate_code_point = lit_convert_surrogate_pair_to_code_point (character, next_character);
output_length += lit_code_point_to_utf8 (surrogate_code_point, utf8_byte_buffer);
lit_utf8_iterator_incr (&input_iterator);
continue;
}
}
if (lower_case)
{
character_length = lit_char_to_lower_case (character,
character_buffer,
LIT_MAXIMUM_OTHER_CASE_LENGTH);
}
else
{
character_length = lit_char_to_upper_case (character,
character_buffer,
LIT_MAXIMUM_OTHER_CASE_LENGTH);
}
JERRY_ASSERT (character_length >= 1 && character_length <= LIT_MAXIMUM_OTHER_CASE_LENGTH);
for (lit_utf8_size_t i = 0; i < character_length; i++)
{
output_length += lit_code_unit_to_utf8 (character_buffer[i], utf8_byte_buffer);
}
}
/* Second phase. */
MEM_DEFINE_LOCAL_ARRAY (output_start_p,
output_length,
lit_utf8_byte_t);
lit_utf8_byte_t *output_char_p = output_start_p;
/* Encoding the output. */
lit_utf8_iterator_seek_bos (&input_iterator);
while (!lit_utf8_iterator_is_eos (&input_iterator))
{
ecma_char_t character = lit_utf8_iterator_read_next (&input_iterator);
ecma_char_t character_buffer[LIT_MAXIMUM_OTHER_CASE_LENGTH];
lit_utf8_size_t character_length;
/*
* We need to keep surrogate pairs. Surrogates are never converted,
* regardless they form a valid pair or not.
*/
if (lit_is_code_unit_high_surrogate (character))
{
ecma_char_t next_character = lit_utf8_iterator_peek_next (&input_iterator);
if (lit_is_code_unit_low_surrogate (next_character))
{
lit_code_point_t surrogate_code_point = lit_convert_surrogate_pair_to_code_point (character, next_character);
output_char_p += lit_code_point_to_utf8 (surrogate_code_point, output_char_p);
lit_utf8_iterator_incr (&input_iterator);
continue;
}
}
if (lower_case)
{
character_length = lit_char_to_lower_case (character,
character_buffer,
LIT_MAXIMUM_OTHER_CASE_LENGTH);
}
else
{
character_length = lit_char_to_upper_case (character,
character_buffer,
LIT_MAXIMUM_OTHER_CASE_LENGTH);
}
JERRY_ASSERT (character_length >= 1 && character_length <= LIT_MAXIMUM_OTHER_CASE_LENGTH);
for (lit_utf8_size_t i = 0; i < character_length; i++)
{
output_char_p += lit_code_point_to_utf8 (character_buffer[i], output_char_p);
}
}
JERRY_ASSERT (output_start_p + output_length == output_char_p);
ecma_string_t *output_string_p = ecma_new_ecma_string_from_utf8 (output_start_p, output_length);
ret_value = ecma_make_normal_completion_value (ecma_make_string_value (output_string_p));
MEM_FINALIZE_LOCAL_ARRAY (output_start_p);
MEM_FINALIZE_LOCAL_ARRAY (input_start_p);
ECMA_FINALIZE (to_string_val);
ECMA_FINALIZE (check_coercible_val);
return ret_value;
} /* ecma_builtin_string_prototype_object_conversion_helper */
/**
* The String.prototype object's 'substring' routine
*
* See also:
* ECMA-262 v5, 15.5.4.15
*
* @return completion value
* Returned value must be freed with ecma_free_completion_value.
*/
static ecma_completion_value_t
ecma_builtin_string_prototype_object_substring (ecma_value_t this_arg, /**< 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 */
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_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);
/* 4, 6 */
ECMA_OP_TO_NUMBER_TRY_CATCH (start_num,
arg1,
ret_value);
ecma_length_t start = 0, end = len;
start = ecma_builtin_helper_string_index_normalize (start_num, len);
/* 5, 7 */
if (ecma_is_value_undefined (arg2))
{
end = len;
}
else
{
ECMA_OP_TO_NUMBER_TRY_CATCH (end_num,
arg2,
ret_value);
end = ecma_builtin_helper_string_index_normalize (end_num, len);
ECMA_OP_TO_NUMBER_FINALIZE (end_num);
}
if (ecma_is_completion_value_empty (ret_value))
{
JERRY_ASSERT (start <= len && end <= len);
/* 8 */
uint32_t from = start < end ? start : end;
/* 9 */
uint32_t to = start > end ? start : end;
/* 10 */
ecma_string_t *new_str_p = ecma_string_substr (original_string_p, from, to);
ret_value = ecma_make_normal_completion_value (ecma_make_string_value (new_str_p));
}
ECMA_OP_TO_NUMBER_FINALIZE (start_num);
ECMA_FINALIZE (to_string_val);
ECMA_FINALIZE (check_coercible_val);
return ret_value;
} /* ecma_builtin_string_prototype_object_substring */
/**
* The String.prototype object's 'slice' routine
*
* See also:
* ECMA-262 v5, 15.5.4.13
*
* @return completion value
* Returned value must be freed with ecma_free_completion_value.
*/
static ecma_completion_value_t
ecma_builtin_string_prototype_object_slice (ecma_value_t this_arg, /**< 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. */
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_string_t *get_string_val = ecma_get_string_from_value (to_string_val);
const ecma_length_t len = ecma_string_get_length (get_string_val);
/* 4. */
ecma_length_t start = 0, end = len;
ECMA_OP_TO_NUMBER_TRY_CATCH (start_num,
arg1,
ret_value);
start = ecma_builtin_helper_array_index_normalize (start_num, len);
/* 5. 7. */
if (ecma_is_value_undefined (arg2))
{
end = len;
}
else
{
ECMA_OP_TO_NUMBER_TRY_CATCH (end_num,
arg2,
ret_value);
end = ecma_builtin_helper_array_index_normalize (end_num, len);
ECMA_OP_TO_NUMBER_FINALIZE (end_num);
}
ECMA_OP_TO_NUMBER_FINALIZE (start_num);
JERRY_ASSERT (start <= len && end <= len);
if (ecma_is_completion_value_empty (ret_value))
{
/* 8-9. */
ecma_string_t *new_str_p = ecma_string_substr (get_string_val, start, end);
ret_value = ecma_make_normal_completion_value (ecma_make_string_value (new_str_p));
}
ECMA_FINALIZE (to_string_val);
ECMA_FINALIZE (check_coercible_val);
return ret_value;
} /* ecma_builtin_string_prototype_object_slice */
/**
* The String.prototype object's 'match' routine
*
* See also:
* ECMA-262 v5, 15.5.4.10
*
* @return completion value
* Returned value must be freed with ecma_free_completion_value.
*/
static ecma_completion_value_t
ecma_builtin_string_prototype_object_match (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_value,
ecma_op_check_object_coercible (this_arg),
ret_value);
/* 2. */
ECMA_TRY_CATCH (this_to_string_value,
ecma_op_to_string (this_arg),
ret_value);
ecma_value_t regexp_value = ecma_make_simple_value (ECMA_SIMPLE_VALUE_EMPTY);
/* 3. */
if (ecma_is_value_object (arg)
&& ecma_object_get_class_name (ecma_get_object_from_value (arg)) == LIT_MAGIC_STRING_REGEXP_UL)
{
regexp_value = ecma_copy_value (arg, true);
}
else
{
/* 4. */
ecma_value_t regexp_arguments[1] = { arg };
ECMA_TRY_CATCH (new_regexp_value,
ecma_builtin_regexp_dispatch_construct (regexp_arguments, 1),
ret_value);
regexp_value = ecma_copy_value (new_regexp_value, true);
ECMA_FINALIZE (new_regexp_value);
}
if (ecma_is_completion_value_empty (ret_value))
{
JERRY_ASSERT (!ecma_is_value_empty (regexp_value));
ecma_object_t *regexp_obj_p = ecma_get_object_from_value (regexp_value);
ecma_string_t *global_string_p = ecma_get_magic_string (LIT_MAGIC_STRING_GLOBAL);
/* 5. */
ECMA_TRY_CATCH (global_value,
ecma_op_object_get (regexp_obj_p, global_string_p),
ret_value);
JERRY_ASSERT (ecma_is_value_boolean (global_value));
ecma_value_t exec_arguments[1] = { this_to_string_value };
if (!ecma_is_value_true (global_value))
{
/* 7. */
ret_value = ecma_builtin_regexp_prototype_dispatch_routine (LIT_MAGIC_STRING_EXEC,
regexp_value,
exec_arguments,
1);
}
else
{
/* 8.a. */
ecma_number_t *zero_number_p = ecma_alloc_number ();
*zero_number_p = 0;
ecma_string_t *index_zero_string_p = ecma_new_ecma_string_from_uint32 (0);
ecma_string_t *last_index_string_p = ecma_get_magic_string (LIT_MAGIC_STRING_LASTINDEX_UL);
ECMA_TRY_CATCH (put_value,
ecma_op_object_put (regexp_obj_p,
last_index_string_p,
ecma_make_number_value (zero_number_p),
true),
ret_value);
/* 8.b. */
ECMA_TRY_CATCH (new_array_value,
ecma_op_create_array_object (NULL, 0, false),
ret_value);
ecma_object_t *new_array_obj_p = ecma_get_object_from_value (new_array_value);
/* 8.c. */
ecma_number_t previous_last_index = 0;
/* 8.d. */
uint32_t n = 0;
/* 8.e. */
bool last_match = true;
//ecma_completion_value_t exec_result = ecma_make_empty_completion_value ();
/* 8.f. */
while (last_match && ecma_is_completion_value_empty (ret_value))
{
/* 8.f.i. */
ECMA_TRY_CATCH (exec_value,
ecma_builtin_regexp_prototype_dispatch_routine (LIT_MAGIC_STRING_EXEC,
regexp_value,
exec_arguments,
1),
ret_value);
if (ecma_is_value_null (exec_value))
{
/* 8.f.ii. */
last_match = false;
}
else
{
/* 8.f.iii. */
ECMA_TRY_CATCH (this_index_value,
ecma_op_object_get (regexp_obj_p, last_index_string_p),
ret_value);
ECMA_TRY_CATCH (this_index_number,
ecma_op_to_number (this_index_value),
ret_value);
ecma_number_t this_index = *ecma_get_number_from_value (this_index_number);
/* 8.f.iii.2. */
if (this_index == previous_last_index)
{
ecma_number_t *new_last_index_p = ecma_alloc_number ();
*new_last_index_p = this_index + 1;
/* 8.f.iii.2.a. */
ECMA_TRY_CATCH (index_put_value,
ecma_op_object_put (regexp_obj_p,
last_index_string_p,
ecma_make_number_value (new_last_index_p),
true),
ret_value);
/* 8.f.iii.2.b. */
previous_last_index = this_index + 1;
ECMA_FINALIZE (index_put_value);
ecma_dealloc_number (new_last_index_p);
}
else
{
/* 8.f.iii.3. */
previous_last_index = this_index;
}
if (ecma_is_completion_value_empty (ret_value))
{
/* 8.f.iii.4. */
JERRY_ASSERT (ecma_is_value_object (exec_value));
ecma_object_t *exec_obj_p = ecma_get_object_from_value (exec_value);
ECMA_TRY_CATCH (match_string_value,
ecma_op_object_get (exec_obj_p, index_zero_string_p),
ret_value);
/* 8.f.iii.5. */
ecma_property_descriptor_t prop_desc = ecma_make_empty_property_descriptor ();
{
prop_desc.is_value_defined = true;
prop_desc.value = match_string_value;
prop_desc.is_writable_defined = true;
prop_desc.is_writable = true;
prop_desc.is_enumerable_defined = true;
prop_desc.is_enumerable = true;
prop_desc.is_configurable_defined = true;
prop_desc.is_configurable = true;
}
ecma_string_t *current_index_str_p = ecma_new_ecma_string_from_uint32 (n);
ecma_completion_value_t completion = ecma_op_object_define_own_property (new_array_obj_p,
current_index_str_p,
&prop_desc,
false);
JERRY_ASSERT (ecma_is_completion_value_normal_true (completion));
ecma_deref_ecma_string (current_index_str_p);
/* 8.f.iii.6. */
n++;
ECMA_FINALIZE (match_string_value);
}
ECMA_FINALIZE (this_index_number);
ECMA_FINALIZE (this_index_value);
}
ECMA_FINALIZE (exec_value);
}
if (ecma_is_completion_value_empty (ret_value))
{
if (n == 0)
{
/* 8.g. */
ret_value = ecma_make_simple_completion_value (ECMA_SIMPLE_VALUE_NULL);
}
else
{
/* 8.h. */
ret_value = ecma_make_normal_completion_value (ecma_copy_value (new_array_value, true));
}
}
ECMA_FINALIZE (new_array_value);
ECMA_FINALIZE (put_value);
ecma_deref_ecma_string (last_index_string_p);
ecma_deref_ecma_string (index_zero_string_p);
ecma_dealloc_number (zero_number_p);
}
ECMA_FINALIZE (global_value);
ecma_deref_ecma_string (global_string_p);
ecma_free_value (regexp_value, true);
}
ECMA_FINALIZE (this_to_string_value);
ECMA_FINALIZE (this_check_coercible_value);
return ret_value;
} /* ecma_builtin_string_prototype_object_match */
/**
* The String.prototype object's 'indexOf' routine
*
* See also:
* ECMA-262 v5, 15.5.4.7
*
* @return completion value
* Returned value must be freed with ecma_free_completion_value.
*/
static ecma_completion_value_t
ecma_builtin_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 */
{
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_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 */
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);
const lit_utf8_size_t original_size = ecma_string_get_size (original_str_p);
/* 4b, 6 */
ecma_length_t start = ecma_builtin_helper_string_index_normalize (pos_num, original_len);
/* 7 */
ecma_string_t *search_str_p = ecma_get_string_from_value (search_str_val);
const ecma_length_t search_len = ecma_string_get_length (search_str_p);
const lit_utf8_size_t search_size = ecma_string_get_size (search_str_p);
ecma_number_t *ret_num_p = ecma_alloc_number ();
*ret_num_p = ecma_int32_to_number (-1);
/* 8 */
if (search_len <= original_len)
{
if (!search_len)
{
*ret_num_p = ecma_uint32_to_number (0);
}
else
{
/* create utf8 string from original string and advance to start position */
MEM_DEFINE_LOCAL_ARRAY (original_str_utf8_p,
original_size,
lit_utf8_byte_t);
ecma_string_to_utf8_string (original_str_p,
original_str_utf8_p,
(ssize_t) (original_size));
lit_utf8_iterator_t original_it = lit_utf8_iterator_create (original_str_utf8_p, original_size);
ecma_length_t index = start;
lit_utf8_iterator_advance (&original_it, index);
/* create utf8 string from search string */
MEM_DEFINE_LOCAL_ARRAY (search_str_utf8_p,
search_size,
lit_utf8_byte_t);
ecma_string_to_utf8_string (search_str_p,
search_str_utf8_p,
(ssize_t) (search_size));
lit_utf8_iterator_t search_it = lit_utf8_iterator_create (search_str_utf8_p, search_size);
/* iterate original string and try to match at each position */
bool found = false;
while (!found && index <= original_len - search_len)
{
ecma_length_t match_len = 0;
lit_utf8_iterator_pos_t stored_original_pos = lit_utf8_iterator_get_pos (&original_it);
while (match_len < search_len &&
lit_utf8_iterator_read_next (&original_it) == lit_utf8_iterator_read_next (&search_it))
{
match_len++;
}
/* Check for match */
if (match_len == search_len)
{
*ret_num_p = ecma_uint32_to_number (index);
found = true;
}
else
{
/* reset iterators */
lit_utf8_iterator_seek_bos (&search_it);
lit_utf8_iterator_seek (&original_it, stored_original_pos);
lit_utf8_iterator_incr (&original_it);
}
index++;
}
MEM_FINALIZE_LOCAL_ARRAY (search_str_utf8_p);
MEM_FINALIZE_LOCAL_ARRAY (original_str_utf8_p);
}
}
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 (pos_num);
ECMA_FINALIZE (search_str_val);
ECMA_FINALIZE (to_str_val);
ECMA_FINALIZE (check_coercible_val);
return ret_value;
} /* ecma_builtin_string_prototype_object_index_of */