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jerryscript/jerry-core/ecma/builtin-objects/ecma-builtin-global.cpp
Andrey Shitov ae3eea8ae8 Add functions for iterating utf-8 strings. 
JerryScript-DCO-1.0-Signed-off-by: Andrey Shitov a.shitov@samsung.com
2015-07-03 13:24:27 +03:00

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/* Copyright 2014-2015 Samsung Electronics Co., Ltd.
* Copyright 2015 University of Szeged
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "ecma-alloc.h"
#include "ecma-builtins.h"
#include "ecma-conversion.h"
#include "ecma-eval.h"
#include "ecma-exceptions.h"
#include "ecma-gc.h"
#include "ecma-globals.h"
#include "ecma-helpers.h"
#include "ecma-try-catch-macro.h"
#include "jrt.h"
#include "lit-magic-strings.h"
#include "vm.h"
#include "jrt-libc-includes.h"
#define ECMA_BUILTINS_INTERNAL
#include "ecma-builtins-internal.h"
#define BUILTIN_INC_HEADER_NAME "ecma-builtin-global.inc.h"
#define BUILTIN_UNDERSCORED_ID global
#include "ecma-builtin-internal-routines-template.inc.h"
/** \addtogroup ecma ECMA
* @{
*
* \addtogroup ecmabuiltins
* @{
*
* \addtogroup global ECMA Global object built-in
* @{
*/
/**
* The Global object's 'eval' routine
*
* See also:
* ECMA-262 v5, 15.1.2.1
*
* @return completion value
* Returned value must be freed with ecma_free_completion_value.
*/
static ecma_completion_value_t
ecma_builtin_global_object_eval (ecma_value_t this_arg __attr_unused___, /**< this argument */
ecma_value_t x) /**< routine's first argument */
{
ecma_completion_value_t ret_value = ecma_make_empty_completion_value ();
bool is_direct_eval = vm_is_direct_eval_form_call ();
/* See also: ECMA-262 v5, 10.1.1 */
bool is_called_from_strict_mode_code;
if (is_direct_eval)
{
is_called_from_strict_mode_code = vm_is_strict_mode ();
}
else
{
is_called_from_strict_mode_code = false;
}
if (!ecma_is_value_string (x))
{
/* step 1 */
ret_value = ecma_make_normal_completion_value (ecma_copy_value (x, true));
}
else
{
/* steps 2 to 8 */
ret_value = ecma_op_eval (ecma_get_string_from_value (x),
is_direct_eval,
is_called_from_strict_mode_code);
}
return ret_value;
} /* ecma_builtin_global_object_eval */
/**
* The Global object's 'parseInt' routine
*
* See also:
* ECMA-262 v5, 15.1.2.2
*
* @return completion value
* Returned value must be freed with ecma_free_completion_value.
*/
static ecma_completion_value_t
ecma_builtin_global_object_parse_int (ecma_value_t this_arg __attr_unused___, /**< this argument */
ecma_value_t string, /**< routine's first argument */
ecma_value_t radix) /**< routine's second argument */
{
ecma_completion_value_t ret_value = ecma_make_empty_completion_value ();
/* 1. */
ECMA_TRY_CATCH (string_var, ecma_op_to_string (string), ret_value);
ecma_string_t *number_str_p = ecma_get_string_from_value (string_var);
ecma_length_t str_size = ecma_string_get_length (number_str_p);
MEM_DEFINE_LOCAL_ARRAY (utf8_string_buff, str_size + 1, lit_utf8_byte_t);
ssize_t bytes_copied = ecma_string_to_utf8_string (number_str_p,
utf8_string_buff,
(ssize_t) str_size);
JERRY_ASSERT (bytes_copied >= 0);
utf8_string_buff[str_size] = LIT_BYTE_NULL;
/* 2. Remove leading whitespace. */
ecma_length_t start = str_size;
ecma_length_t end = str_size;
for (ecma_length_t i = 0; i < end; i++)
{
if (!(isspace (utf8_string_buff[i])))
{
start = i;
break;
}
}
/* 3. */
int sign = 1;
/* 4. */
if (utf8_string_buff[start] == '-')
{
sign = -1;
}
/* 5. */
if (utf8_string_buff[start] == '-' || utf8_string_buff[start] == '+')
{
start++;
}
/* 6. */
ECMA_OP_TO_NUMBER_TRY_CATCH (radix_num, radix, ret_value);
int32_t rad = ecma_number_to_int32 (radix_num);
/* 7.*/
bool strip_prefix = true;
/* 8. */
if (rad != 0)
{
/* 8.a */
if (rad < 2 || rad > 36)
{
ecma_number_t *ret_num_p = ecma_alloc_number ();
*ret_num_p = ecma_number_make_nan ();
ret_value = ecma_make_normal_completion_value (ecma_make_number_value (ret_num_p));
}
/* 8.b */
else if (rad != 16)
{
strip_prefix = false;
}
}
/* 9. */
else
{
rad = 10;
}
if (ecma_is_completion_value_empty (ret_value))
{
/* 10. */
if (strip_prefix)
{
if (end - start >= 2
&& utf8_string_buff[start] == '0'
&& (utf8_string_buff[start + 1] == 'x' || utf8_string_buff[start + 1] == 'X'))
{
start += 2;
rad = 16;
}
}
/* 11. Check if characters are in [0, Radix - 1]. We also convert them to number values in the process. */
for (lit_utf8_size_t i = start; i < end; i++)
{
if ((utf8_string_buff[i]) >= 'a' && utf8_string_buff[i] <= 'z')
{
utf8_string_buff[i] = (lit_utf8_byte_t) (utf8_string_buff[i] - 'a' + 10);
}
else if (utf8_string_buff[i] >= 'A' && utf8_string_buff[i] <= 'Z')
{
utf8_string_buff[i] = (lit_utf8_byte_t) (utf8_string_buff[i] - 'A' + 10);
}
else if (isdigit (utf8_string_buff[i]))
{
utf8_string_buff[i] = (lit_utf8_byte_t) (utf8_string_buff[i] - '0');
}
else
{
/* Not a valid number char, set value to radix so it fails to pass as a valid character. */
utf8_string_buff[i] = (lit_utf8_byte_t) rad;
}
if (!(utf8_string_buff[i] < rad))
{
end = i;
break;
}
}
/* 12. */
if (end - start == 0)
{
ecma_number_t *ret_num_p = ecma_alloc_number ();
*ret_num_p = ecma_number_make_nan ();
ret_value = ecma_make_normal_completion_value (ecma_make_number_value (ret_num_p));
}
}
if (ecma_is_completion_value_empty (ret_value))
{
ecma_number_t *value_p = ecma_alloc_number ();
*value_p = 0;
ecma_number_t multiplier = 1.0f;
/* 13. and 14. */
for (int32_t i = (int32_t) end - 1; i >= (int32_t) start; i--)
{
*value_p += (ecma_number_t) utf8_string_buff[i] * multiplier;
multiplier *= (ecma_number_t) rad;
}
/* 15. */
if (sign < 0)
{
*value_p *= (ecma_number_t) sign;
}
ret_value = ecma_make_normal_completion_value (ecma_make_number_value (value_p));
}
ECMA_OP_TO_NUMBER_FINALIZE (radix_num);
MEM_FINALIZE_LOCAL_ARRAY (utf8_string_buff);
ECMA_FINALIZE (string_var);
return ret_value;
} /* ecma_builtin_global_object_parse_int */
/**
* The Global object's 'parseFloat' routine
*
* See also:
* ECMA-262 v5, 15.1.2.3
*
* @return completion value
* Returned value must be freed with ecma_free_completion_value.
*/
static ecma_completion_value_t
ecma_builtin_global_object_parse_float (ecma_value_t this_arg __attr_unused___, /**< this argument */
ecma_value_t string) /**< routine's first argument */
{
ecma_completion_value_t ret_value = ecma_make_empty_completion_value ();
/* 1. */
ECMA_TRY_CATCH (string_var, ecma_op_to_string (string), ret_value);
ecma_string_t *number_str_p = ecma_get_string_from_value (string_var);
lit_utf8_size_t str_size = ecma_string_get_size (number_str_p);
MEM_DEFINE_LOCAL_ARRAY (utf8_string_buff, str_size + 1, lit_utf8_byte_t);
ssize_t bytes_copied = ecma_string_to_utf8_string (number_str_p,
utf8_string_buff,
(ssize_t) str_size);
JERRY_ASSERT (bytes_copied >= 0);
utf8_string_buff[str_size] = LIT_BYTE_NULL;
/* 2. Find first non whitespace char. */
lit_utf8_size_t start = 0;
for (lit_utf8_size_t i = 0; i < str_size; i++)
{
if (!isspace (utf8_string_buff[i]))
{
start = i;
break;
}
}
bool sign = false;
/* Check if sign is present. */
if (utf8_string_buff[start] == '-')
{
sign = true;
start++;
}
else if (utf8_string_buff[start] == '+')
{
start++;
}
ecma_number_t *ret_num_p = ecma_alloc_number ();
/* Check if string is equal to "Infinity". */
const lit_utf8_byte_t *infinity_utf8_str_p = lit_get_magic_string_utf8 (LIT_MAGIC_STRING_INFINITY_UL);
for (lit_utf8_size_t i = 0; infinity_utf8_str_p[i] == utf8_string_buff[start + i]; i++)
{
if (infinity_utf8_str_p[i + 1] == 0)
{
*ret_num_p = ecma_number_make_infinity (sign);
ret_value = ecma_make_normal_completion_value (ecma_make_number_value (ret_num_p));
break;
}
}
if (ecma_is_completion_value_empty (ret_value))
{
lit_utf8_size_t current = start;
lit_utf8_size_t end = str_size;
bool has_whole_part = false;
bool has_fraction_part = false;
if (isdigit (utf8_string_buff[current]))
{
has_whole_part = true;
/* Check digits of whole part. */
for (lit_utf8_size_t i = current; i < str_size; i++, current++)
{
if (!isdigit (utf8_string_buff[current]))
{
break;
}
}
}
end = current;
/* Check decimal point. */
if (utf8_string_buff[current] == '.')
{
current++;
if (isdigit (utf8_string_buff[current]))
{
has_fraction_part = true;
/* Check digits of fractional part. */
for (lit_utf8_size_t i = current; i < str_size; i++, current++)
{
if (!isdigit (utf8_string_buff[current]))
{
break;
}
}
end = current;
}
}
/* Check exponent. */
if ((utf8_string_buff[current] == 'e' || utf8_string_buff[current] == 'E')
&& (has_whole_part || has_fraction_part))
{
current++;
/* Check sign of exponent. */
if (utf8_string_buff[current] == '-' || utf8_string_buff[current] == '+')
{
current++;
}
if (isdigit (utf8_string_buff[current]))
{
/* Check digits of exponent part. */
for (lit_utf8_size_t i = current; i < str_size; i++, current++)
{
if (!isdigit (utf8_string_buff[current]))
{
break;
}
}
end = current;
}
}
if (start == end)
{
*ret_num_p = ecma_number_make_nan ();
ret_value = ecma_make_normal_completion_value (ecma_make_number_value (ret_num_p));
}
else
{
/* 5. */
*ret_num_p = ecma_utf8_string_to_number (utf8_string_buff + start, end - start);
if (sign)
{
*ret_num_p *= -1;
}
ret_value = ecma_make_normal_completion_value (ecma_make_number_value (ret_num_p));
}
}
MEM_FINALIZE_LOCAL_ARRAY (utf8_string_buff);
ECMA_FINALIZE (string_var);
return ret_value;
} /* ecma_builtin_global_object_parse_float */
/**
* The Global object's 'isNaN' routine
*
* See also:
* ECMA-262 v5, 15.1.2.4
*
* @return completion value
* Returned value must be freed with ecma_free_completion_value.
*/
static ecma_completion_value_t
ecma_builtin_global_object_is_nan (ecma_value_t this_arg __attr_unused___, /**< this argument */
ecma_value_t arg) /**< routine's first argument */
{
ecma_completion_value_t ret_value = ecma_make_empty_completion_value ();
ECMA_OP_TO_NUMBER_TRY_CATCH (arg_num, arg, ret_value);
bool is_nan = ecma_number_is_nan (arg_num);
ret_value = ecma_make_simple_completion_value (is_nan ? ECMA_SIMPLE_VALUE_TRUE
: ECMA_SIMPLE_VALUE_FALSE);
ECMA_OP_TO_NUMBER_FINALIZE (arg_num);
return ret_value;
} /* ecma_builtin_global_object_is_nan */
/**
* The Global object's 'isFinite' routine
*
* See also:
* ECMA-262 v5, 15.1.2.5
*
* @return completion value
* Returned value must be freed with ecma_free_completion_value.
*/
static ecma_completion_value_t
ecma_builtin_global_object_is_finite (ecma_value_t this_arg __attr_unused___, /**< this argument */
ecma_value_t arg) /**< routine's first argument */
{
ecma_completion_value_t ret_value = ecma_make_empty_completion_value ();
ECMA_OP_TO_NUMBER_TRY_CATCH (arg_num, arg, ret_value);
bool is_finite = !(ecma_number_is_nan (arg_num)
|| ecma_number_is_infinity (arg_num));
ret_value = ecma_make_simple_completion_value (is_finite ? ECMA_SIMPLE_VALUE_TRUE
: ECMA_SIMPLE_VALUE_FALSE);
ECMA_OP_TO_NUMBER_FINALIZE (arg_num);
return ret_value;
} /* ecma_builtin_global_object_is_finite */
/**
* Helper function to check whether a character is in a character bitset.
*
* @return true if the character is in the character bitset.
*/
static bool
ecma_builtin_global_object_character_is_in (uint32_t character, /**< character */
uint8_t *bitset) /**< character set */
{
JERRY_ASSERT (character < 128);
return (bitset[character >> 3] & (1 << (character & 0x7))) != 0;
} /* ecma_builtin_global_object_character_is_in */
/*
* Unescaped URI characters bitset:
* One bit for each character between 0 - 127.
* Bit is set if the character is in the unescaped URI set.
*/
static uint8_t unescaped_uri_set[16] =
{
0x0, 0x0, 0x0, 0x0, 0xda, 0xff, 0xff, 0xaf,
0xff, 0xff, 0xff, 0x87, 0xfe, 0xff, 0xff, 0x47
};
/*
* Unescaped URI component characters bitset:
* One bit for each character between 0 - 127.
* Bit is set if the character is in the unescaped component URI set.
*/
static uint8_t unescaped_uri_component_set[16] =
{
0x0, 0x0, 0x0, 0x0, 0x82, 0x67, 0xff, 0x3,
0xfe, 0xff, 0xff, 0x87, 0xfe, 0xff, 0xff, 0x47
};
#define ECMA_BUILTIN_HEX_TO_BYTE_ERROR 0x100
/**
* Helper function to decode a hexadecimal byte from a string.
*
* @return the decoded byte value
* It returns with ECMA_BUILTIN_HEX_TO_BYTE_ERROR if a parse error is occured.
*/
static uint32_t
ecma_builtin_global_object_hex_to_byte (lit_utf8_byte_t *source_p) /**< source string */
{
uint32_t decoded_byte = 0;
/*
* Zero terminated string, so length check is not needed.
*/
if (*source_p != '%')
{
return ECMA_BUILTIN_HEX_TO_BYTE_ERROR;
}
for (lit_utf8_size_t i = 0; i < 2; i++)
{
source_p++;
decoded_byte <<= 4;
if (*source_p >= '0' && *source_p <= '9')
{
decoded_byte |= (uint32_t) (*source_p - '0');
}
else if (*source_p >= 'a' && *source_p <= 'f')
{
decoded_byte |= (uint32_t) (*source_p - ('a' - 10));
}
else if (*source_p >= 'A' && *source_p <= 'F')
{
decoded_byte |= (uint32_t) (*source_p - ('A' - 10));
}
else
{
return ECMA_BUILTIN_HEX_TO_BYTE_ERROR;
}
}
return decoded_byte;
} /* ecma_builtin_global_object_hex_to_byte */
/**
* Helper function to decode URI.
*
* @return completion value
* Returned value must be freed with ecma_free_completion_value.
*/
static ecma_completion_value_t
ecma_builtin_global_object_decode_uri_helper (ecma_value_t uri __attr_unused___, /**< uri argument */
uint8_t *reserved_uri_bitset) /**< reserved characters bitset */
{
ecma_completion_value_t ret_value = ecma_make_empty_completion_value ();
ECMA_TRY_CATCH (string,
ecma_op_to_string (uri),
ret_value);
JERRY_ASSERT (ecma_is_value_string (string));
ecma_string_t *input_string_p = ecma_get_string_from_value (string);
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));
lit_utf8_byte_t *input_char_p = input_start_p;
lit_utf8_byte_t *input_end_p = input_start_p + input_size;
lit_utf8_size_t output_size = 0;
/*
* The URI decoding has two major phases: first we validate the input,
* and compute the length of the output, then we decode the input.
*/
while (input_char_p < input_end_p)
{
/* Input validation. */
if (*input_char_p != '%')
{
output_size++;
input_char_p++;
continue;
}
uint32_t decoded_byte = ecma_builtin_global_object_hex_to_byte (input_char_p);
if (decoded_byte == ECMA_BUILTIN_HEX_TO_BYTE_ERROR)
{
ret_value = ecma_make_throw_obj_completion_value (ecma_new_standard_error (ECMA_ERROR_URI));
break;
}
input_char_p += 3;
if (decoded_byte <= 0x7f)
{
/*
* We don't decode those bytes, which are part of reserved_uri_bitset
* but not part of unescaped_uri_component_set.
*/
if (ecma_builtin_global_object_character_is_in (decoded_byte, reserved_uri_bitset)
&& !ecma_builtin_global_object_character_is_in (decoded_byte, unescaped_uri_component_set))
{
output_size += 3;
}
else
{
output_size++;
}
}
else if (decoded_byte < 0xc0 || decoded_byte >= 0xf8)
{
/*
* Invalid UTF-8 starting bytes:
* 10xx xxxx - UTF continuation byte
* 1111 1xxx - maximum length is 4 bytes
*/
ret_value = ecma_make_throw_obj_completion_value (ecma_new_standard_error (ECMA_ERROR_URI));
break;
}
else
{
uint32_t count;
uint32_t min;
uint32_t character;
if (decoded_byte < 0xe0)
{
count = 1;
min = 0x80;
character = decoded_byte & 0x1f;
}
else if (decoded_byte < 0xf0)
{
count = 2;
min = 0x800;
character = decoded_byte & 0x0f;
}
else
{
count = 3;
min = 0x1000;
character = decoded_byte & 0x07;
}
output_size += (count + 1);
do
{
decoded_byte = ecma_builtin_global_object_hex_to_byte (input_char_p);
if (decoded_byte == ECMA_BUILTIN_HEX_TO_BYTE_ERROR
|| (decoded_byte & 0xc0) != 0x80)
{
break;
}
character = (character << 6) + (decoded_byte & 0x3f);
input_char_p += 3;
}
while (--count > 0);
if (count != 0
/*
* Explanation of the character < min check: according to
* the UTF standard, each character must be encoded
* with the minimum amount of bytes. We need to reject
* those characters, which does not satisfy this condition.
*/
|| character < min
/*
* Not allowed character ranges.
*/
|| character > 0x10ffff
|| (character >= 0xd800 && character <= 0xdfff))
{
ret_value = ecma_make_throw_obj_completion_value (ecma_new_standard_error (ECMA_ERROR_URI));
break;
}
}
}
if (ecma_is_completion_value_empty (ret_value))
{
MEM_DEFINE_LOCAL_ARRAY (output_start_p,
output_size,
lit_utf8_byte_t);
input_char_p = input_start_p;
lit_utf8_byte_t *output_char_p = output_start_p;
while (input_char_p < input_end_p)
{
/* Input decode. */
if (*input_char_p != '%')
{
*output_char_p = *input_char_p;
output_char_p++;
input_char_p++;
continue;
}
uint32_t decoded_byte = ecma_builtin_global_object_hex_to_byte (input_char_p);
input_char_p += 3;
if (decoded_byte <= 0x7f)
{
if (ecma_builtin_global_object_character_is_in (decoded_byte, reserved_uri_bitset)
&& !ecma_builtin_global_object_character_is_in (decoded_byte, unescaped_uri_component_set))
{
*output_char_p = '%';
output_char_p++;
input_char_p -= 2;
}
else
{
*output_char_p = (lit_utf8_byte_t) decoded_byte;
output_char_p++;
}
}
else
{
uint32_t count;
uint32_t character;
/* The validator already checked this before. */
JERRY_ASSERT (decoded_byte >= 0xc0 && decoded_byte < 0xf8);
if (decoded_byte < 0xe0)
{
count = 1;
character = decoded_byte & 0x1f;
}
else if (decoded_byte < 0xf0)
{
count = 2;
character = decoded_byte & 0x0f;
}
else
{
count = 3;
character = decoded_byte & 0x07;
}
do
{
decoded_byte = ecma_builtin_global_object_hex_to_byte (input_char_p);
JERRY_ASSERT (decoded_byte != ECMA_BUILTIN_HEX_TO_BYTE_ERROR
&& (decoded_byte & 0xc0) == 0x80);
character = (character << 6) + (decoded_byte & 0x3f);
input_char_p += 3;
}
while (--count > 0);
output_char_p += lit_code_point_to_utf8 (character, output_char_p);
}
}
JERRY_ASSERT (output_start_p + output_size == output_char_p);
ecma_string_t *output_string_p = ecma_new_ecma_string_from_utf8 (output_start_p, output_size);
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 (string);
return ret_value;
} /* ecma_builtin_global_object_decode_uri_helper */
/**
* The Global object's 'decodeURI' routine
*
* See also:
* ECMA-262 v5, 15.1.3.1
*
* @return completion value
* Returned value must be freed with ecma_free_completion_value.
*/
static ecma_completion_value_t
ecma_builtin_global_object_decode_uri (ecma_value_t this_arg __attr_unused___, /**< this argument */
ecma_value_t encoded_uri) /**< routine's first argument */
{
return ecma_builtin_global_object_decode_uri_helper (encoded_uri, unescaped_uri_set);
} /* ecma_builtin_global_object_decode_uri */
/**
* The Global object's 'decodeURIComponent' routine
*
* See also:
* ECMA-262 v5, 15.1.3.2
*
* @return completion value
* Returned value must be freed with ecma_free_completion_value.
*/
static ecma_completion_value_t
ecma_builtin_global_object_decode_uri_component (ecma_value_t this_arg __attr_unused___, /**< this argument */
ecma_value_t encoded_uri_component) /**< routine's
* first argument */
{
return ecma_builtin_global_object_decode_uri_helper (encoded_uri_component, unescaped_uri_component_set);
} /* ecma_builtin_global_object_decode_uri_component */
/**
* Helper function to encode byte as hexadecimal values.
*/
static void
ecma_builtin_global_object_byte_to_hex (lit_utf8_byte_t *dest_p, /**< destination pointer */
uint32_t byte) /**< value */
{
JERRY_ASSERT (byte < 256);
dest_p[0] = '%';
ecma_char_t hex_digit = (ecma_char_t) (byte >> 4);
dest_p[1] = (lit_utf8_byte_t) ((hex_digit > 9) ? (hex_digit + ('A' - 10)) : (hex_digit + '0'));
hex_digit = (lit_utf8_byte_t) (byte & 0xf);
dest_p[2] = (lit_utf8_byte_t) ((hex_digit > 9) ? (hex_digit + ('A' - 10)) : (hex_digit + '0'));
} /* ecma_builtin_global_object_byte_to_hex */
/**
* Helper function to encode URI.
*
* @return completion value
* Returned value must be freed with ecma_free_completion_value.
*/
static ecma_completion_value_t
ecma_builtin_global_object_encode_uri_helper (ecma_value_t uri, /**< uri argument */
uint8_t* unescaped_uri_bitset) /**< unescaped bitset */
{
ecma_completion_value_t ret_value = ecma_make_empty_completion_value ();
ECMA_TRY_CATCH (string,
ecma_op_to_string (uri),
ret_value);
JERRY_ASSERT (ecma_is_value_string (string));
ecma_string_t *input_string_p = ecma_get_string_from_value (string);
lit_utf8_size_t input_size = ecma_string_get_size (input_string_p);
MEM_DEFINE_LOCAL_ARRAY (input_start_p,
input_size + 1,
lit_utf8_byte_t);
input_start_p[input_size] = LIT_BYTE_NULL;
ecma_string_to_utf8_string (input_string_p,
input_start_p,
(ssize_t) (input_size));
/*
* The URI encoding has two major phases: first we validate the input,
* and compute the length of the output, then we encode the input.
*/
lit_utf8_iterator_t iter = lit_utf8_iterator_create (input_start_p, input_size);
lit_utf8_size_t output_length = 1;
while (!lit_utf8_iterator_is_eos (&iter))
{
/* Input validation. */
lit_code_point_t character = lit_utf8_iterator_read_next (&iter);
if (character <= 0x7f)
{
if (ecma_builtin_global_object_character_is_in (character, unescaped_uri_bitset))
{
output_length++;
}
else
{
output_length += 3;
}
}
else if (character <= 0x7ff)
{
output_length += 6;
}
else if (character <= 0xffff)
{
if (character >= 0xd800 && character <= 0xdfff)
{
ret_value = ecma_make_throw_obj_completion_value (ecma_new_standard_error (ECMA_ERROR_URI));
break;
}
else
{
output_length += 9;
}
}
else if (character <= 0x10ffff)
{
output_length += 12;
}
else
{
ret_value = ecma_make_throw_obj_completion_value (ecma_new_standard_error (ECMA_ERROR_URI));
break;
}
}
if (ecma_is_completion_value_empty (ret_value))
{
MEM_DEFINE_LOCAL_ARRAY (output_start_p,
output_length,
lit_utf8_byte_t);
lit_utf8_iterator_t iter = lit_utf8_iterator_create (input_start_p, input_size);
lit_utf8_byte_t *output_char_p = output_start_p;
while (!lit_utf8_iterator_is_eos (&iter))
{
/* Input decode. */
lit_code_point_t character = lit_utf8_iterator_read_next (&iter);
if (character <= 0x7f)
{
if (ecma_builtin_global_object_character_is_in (character, unescaped_uri_bitset))
{
*output_char_p++ = (lit_utf8_byte_t) character;
}
else
{
ecma_builtin_global_object_byte_to_hex (output_char_p, character);
output_char_p += 3;
}
}
else if (character <= 0x7ff)
{
ecma_builtin_global_object_byte_to_hex (output_char_p, 0xc0 | (character >> 6));
output_char_p += 3;
ecma_builtin_global_object_byte_to_hex (output_char_p, 0x80 | (character & 0x3f));
output_char_p += 3;
}
else if (character <= 0xffff)
{
ecma_builtin_global_object_byte_to_hex (output_char_p, 0xe0 | (character >> 12));
output_char_p += 3;
ecma_builtin_global_object_byte_to_hex (output_char_p, 0x80 | ((character >> 6) & 0x3f));
output_char_p += 3;
ecma_builtin_global_object_byte_to_hex (output_char_p, 0x80 | (character & 0x3f));
output_char_p += 3;
}
else
{
ecma_builtin_global_object_byte_to_hex (output_char_p, 0xf0 | (character >> 18));
output_char_p += 3;
ecma_builtin_global_object_byte_to_hex (output_char_p, 0x80 | ((character >> 12) & 0x3f));
output_char_p += 3;
ecma_builtin_global_object_byte_to_hex (output_char_p, 0x80 | ((character >> 6) & 0x3f));
output_char_p += 3;
ecma_builtin_global_object_byte_to_hex (output_char_p, 0x80 | (character & 0x3f));
output_char_p += 3;
}
}
*output_char_p = '\0';
JERRY_ASSERT (output_start_p + output_length == output_char_p + 1);
ecma_string_t *output_string_p = ecma_new_ecma_string_from_utf8 (output_start_p, output_length - 1);
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 (string);
return ret_value;
} /* ecma_builtin_global_object_encode_uri_helper */
/**
* The Global object's 'encodeURI' routine
*
* See also:
* ECMA-262 v5, 15.1.3.3
*
* @return completion value
* Returned value must be freed with ecma_free_completion_value.
*/
static ecma_completion_value_t
ecma_builtin_global_object_encode_uri (ecma_value_t this_arg __attr_unused___, /**< this argument */
ecma_value_t uri) /**< routine's first argument */
{
return ecma_builtin_global_object_encode_uri_helper (uri, unescaped_uri_set);
} /* ecma_builtin_global_object_encode_uri */
/**
* The Global object's 'encodeURIComponent' routine
*
* See also:
* ECMA-262 v5, 15.1.3.4
*
* @return completion value
* Returned value must be freed with ecma_free_completion_value.
*/
static ecma_completion_value_t
ecma_builtin_global_object_encode_uri_component (ecma_value_t this_arg __attr_unused___, /**< this argument */
ecma_value_t uri_component) /**< routine's first argument */
{
return ecma_builtin_global_object_encode_uri_helper (uri_component, unescaped_uri_component_set);
} /* ecma_builtin_global_object_encode_uri_component */
/**
* @}
* @}
* @}
*/
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