Robert Fancsik 488a0bf7e8
Improve date internals (#4593)
- Optimize year from time calculation
- Force arithmetic operations to int32_t/int64_t whenever possible
- Optimize number conversion in date parse
- Cache local TZA of the date object
- Fix a bug in Date.parse timezone parsing

JerryScript-DCO-1.0-Signed-off-by: Robert Fancsik robert.fancsik@h-lab.eu
2021-02-17 16:07:54 +01:00

912 lines
26 KiB
C

/* Copyright JS Foundation and other contributors, http://js.foundation
*
* 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 <math.h>
#include "jcontext.h"
#include "ecma-function-object.h"
#include "ecma-alloc.h"
#include "ecma-builtin-helpers.h"
#include "ecma-conversion.h"
#include "ecma-exceptions.h"
#include "ecma-gc.h"
#include "ecma-globals.h"
#include "ecma-helpers.h"
#include "lit-char-helpers.h"
#if JERRY_BUILTIN_DATE
#define ECMA_BUILTINS_INTERNAL
#include "ecma-builtins-internal.h"
/**
* This object has a custom dispatch function.
*/
#define BUILTIN_CUSTOM_DISPATCH
/**
* List of built-in routine identifiers.
*/
enum
{
ECMA_DATE_ROUTINE_START = 0,
ECMA_DATE_ROUTINE_PARSE,
ECMA_DATE_ROUTINE_UTC,
ECMA_DATE_ROUTINE_NOW,
};
#define BUILTIN_INC_HEADER_NAME "ecma-builtin-date.inc.h"
#define BUILTIN_UNDERSCORED_ID date
#include "ecma-builtin-internal-routines-template.inc.h"
/** \addtogroup ecma ECMA
* @{
*
* \addtogroup ecmabuiltins
* @{
*
* \addtogroup date ECMA Date object built-in
* @{
*/
/**
* Encode minimum/maximum limits
*
* See: ecma_date_parse_date_chars
*
* @param min: 8 bits unsigned number
* @param max: 24 bits unsigned number
*/
#define ECMA_DATE_LIMIT(min, max) (min << 24 | max)
/**
* Decode the minimum value from the encoded limit
*/
#define ECMA_DATE_LIMIT_MIN(limit) (limit >> 24)
/**
* Decode the maximum value from the encoded limit
*/
#define ECMA_DATE_LIMIT_MAX(limit) (limit & ((1 << 24) - 1))
/**
* Helper function to try to parse a part of a date string
*
* @return NaN if cannot read from string, ToNumber() otherwise
*/
static ecma_number_t
ecma_date_parse_date_chars (const lit_utf8_byte_t **str_p, /**< pointer to the cesu8 string */
const lit_utf8_byte_t *str_end_p, /**< pointer to the end of the string */
uint32_t num_of_chars, /**< number of characters to read and convert */
uint32_t limit) /**< minimum/maximum valid value */
{
JERRY_ASSERT (num_of_chars > 0 && num_of_chars <= 6);
if (*str_p + num_of_chars > str_end_p)
{
return ecma_number_make_nan ();
}
str_end_p = *str_p + num_of_chars;
uint32_t num = 0;
while (num_of_chars--)
{
lit_utf8_byte_t c = **str_p;
if (!lit_char_is_decimal_digit (c))
{
return ecma_number_make_nan ();
}
num = (num * 10) + (uint32_t) ((c - LIT_CHAR_0));
(*str_p)++;
}
if (num >= ECMA_DATE_LIMIT_MIN (limit) && num <= ECMA_DATE_LIMIT_MAX (limit))
{
return (ecma_number_t) num;
}
return ecma_number_make_nan ();
} /* ecma_date_parse_date_chars */
/**
* Helper function to try to parse a special chracter (+,-,T,Z,:,.) in a date string
*
* @return true if the first character is same as the expected, false otherwise
*/
static bool
ecma_date_parse_special_char (const lit_utf8_byte_t **str_p, /**< pointer to the cesu8 string */
const lit_utf8_byte_t *str_end_p, /**< pointer to the end of the string */
ecma_char_t expected_char) /**< expected character */
{
if ((*str_p < str_end_p) && (**str_p == expected_char))
{
(*str_p)++;
return true;
}
return false;
} /* ecma_date_parse_special_char */
static inline bool JERRY_ATTR_ALWAYS_INLINE
ecma_date_check_two_chars (const lit_utf8_byte_t *str_p, /**< pointer to the cesu8 string */
const lit_utf8_byte_t *str_end_p, /**< pointer to the end of the string */
ecma_char_t expected_char1, /**< first expected character */
ecma_char_t expected_char2) /**< second expected character */
{
return (str_p < str_end_p
&& (*str_p == expected_char1 || *str_p == expected_char2));
} /* ecma_date_check_two_chars */
/**
* Helper function to try to parse a 4-5-6 digit year with optional negative sign in a date string
*
* Date.prototype.toString() and Date.prototype.toUTCString() emits year
* in this format and Date.parse() should parse this format too.
*
* @return the parsed year or NaN.
*/
static ecma_number_t
ecma_date_parse_year (const lit_utf8_byte_t **str_p, /**< pointer to the cesu8 string */
const lit_utf8_byte_t *str_end_p) /**< pointer to the end of the string */
{
bool is_year_sign_negative = ecma_date_parse_special_char (str_p, str_end_p, LIT_CHAR_MINUS);
const lit_utf8_byte_t *str_start_p = *str_p;
int32_t parsed_year = 0;
while ((str_start_p - *str_p < 6) && (str_start_p < str_end_p) && lit_char_is_decimal_digit (*str_start_p))
{
parsed_year = 10 * parsed_year + *str_start_p - LIT_CHAR_0;
str_start_p++;
}
if (str_start_p - *str_p >= 4)
{
*str_p = str_start_p;
return is_year_sign_negative ? -parsed_year : parsed_year;
}
return ecma_number_make_nan ();
} /* ecma_date_parse_year */
/**
* Helper function to try to parse a day name in a date string
* Valid day names: Sun, Mon, Tue, Wed, Thu, Fri, Sat
* See also:
* ECMA-262 v9, 20.3.4.41.2 Table 46
*
* @return true if the string starts with a valid day name, false otherwise
*/
static bool
ecma_date_parse_day_name (const lit_utf8_byte_t **str_p, /**< pointer to the cesu8 string */
const lit_utf8_byte_t *str_end_p) /**< pointer to the end of the string */
{
if (*str_p + 3 < str_end_p)
{
for (uint32_t i = 0; i < 7; i++)
{
if (!memcmp (day_names_p[i], *str_p, 3))
{
(*str_p) += 3;
return true;
}
}
}
return false;
} /* ecma_date_parse_day_name */
/**
* Helper function to try to parse a month name in a date string
* Valid month names: Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec
* See also:
* ECMA-262 v9, 20.3.4.41.2 Table 47
*
* @return number of the month if the string starts with a valid month name, 0 otherwise
*/
static uint32_t
ecma_date_parse_month_name (const lit_utf8_byte_t **str_p, /**< pointer to the cesu8 string */
const lit_utf8_byte_t *str_end_p) /**< pointer to the end of the string */
{
if (*str_p + 3 < str_end_p)
{
for (uint32_t i = 0; i < 12; i++)
{
if (!memcmp (month_names_p[i], *str_p, 3))
{
(*str_p) += 3;
return (i + 1);
}
}
}
return 0;
} /* ecma_date_parse_month_name */
/**
* Calculate MakeDate(MakeDay(yr, m, dt), MakeTime(h, min, s, milli)) for Date constructor and UTC
*
* See also:
* ECMA-262 v11, 20.4.3.4
*
* @return false - if the operation fails
* true - otherwise
*/
static bool
ecma_date_construct_helper (const ecma_value_t *args, /**< arguments passed to the Date constructor */
uint32_t args_len, /**< number of arguments */
ecma_number_t *tv_p) /**< [out] time value */
{
ecma_number_t date_nums[7] =
{
ECMA_NUMBER_ZERO, /* year */
ECMA_NUMBER_ZERO, /* month */
ECMA_NUMBER_ONE, /* date */
ECMA_NUMBER_ZERO, /* hours */
ECMA_NUMBER_ZERO, /* minutes */
ECMA_NUMBER_ZERO, /* seconds */
ECMA_NUMBER_ZERO /* miliseconds */
};
args_len = JERRY_MIN (args_len, sizeof (date_nums) / sizeof (date_nums[0]));
/* 1-7. */
for (uint32_t i = 0; i < args_len; i++)
{
ecma_value_t status = ecma_op_to_number (args[i], date_nums + i);
if (ECMA_IS_VALUE_ERROR (status))
{
return false;
}
}
/* 8. */
if (!ecma_number_is_nan (date_nums[0]))
{
/* 9.a */
ecma_number_t yi = ecma_number_trunc (date_nums[0]);
/* 9.b */
if (yi >= 0 && yi <= 99)
{
date_nums[0] = 1900 + yi;
}
}
/* 10. */
*tv_p = ecma_date_make_date (ecma_date_make_day (date_nums[0],
date_nums[1],
date_nums[2]),
ecma_date_make_time (date_nums[3],
date_nums[4],
date_nums[5],
date_nums[6]));
return true;
} /* ecma_date_construct_helper */
/**
* Helper function used by ecma_builtin_date_parse
*
* See also:
* ECMA-262 v5, 15.9.4.2 Date.parse (string)
* ECMA-262 v5, 15.9.1.15 Date Time String Format
*
* @return the parsed date as ecma_number_t or NaN otherwise
*/
static ecma_number_t
ecma_builtin_date_parse_basic (const lit_utf8_byte_t *date_str_curr_p, /**< date string start */
const lit_utf8_byte_t *date_str_end_p) /**< date string end */
{
/* 1. read year */
uint32_t year_digits = 4;
uint32_t year_limit = 9999;
bool is_year_sign_negative = false;
if (ecma_date_check_two_chars (date_str_curr_p, date_str_end_p, LIT_CHAR_MINUS, LIT_CHAR_PLUS))
{
is_year_sign_negative = (*date_str_curr_p++ == LIT_CHAR_MINUS);
year_digits = 6;
year_limit = 999999;
}
ecma_number_t year = ecma_date_parse_date_chars (&date_str_curr_p,
date_str_end_p,
year_digits,
ECMA_DATE_LIMIT (0, year_limit));
if (is_year_sign_negative)
{
year = -year;
}
if (ecma_number_is_nan (year))
{
return year;
}
ecma_number_t month = ECMA_NUMBER_ONE;
ecma_number_t day = ECMA_NUMBER_ONE;
ecma_number_t time = ECMA_NUMBER_ZERO;
/* 2. read month if any */
if (ecma_date_check_two_chars (date_str_curr_p, date_str_end_p, LIT_CHAR_MINUS, LIT_CHAR_SLASH))
{
lit_utf8_byte_t separator = *date_str_curr_p++;
month = ecma_date_parse_date_chars (&date_str_curr_p, date_str_end_p, 2, ECMA_DATE_LIMIT (1, 12));
/* 3. read day if any */
if (ecma_date_parse_special_char (&date_str_curr_p, date_str_end_p, separator))
{
day = ecma_date_parse_date_chars (&date_str_curr_p, date_str_end_p, 2, ECMA_DATE_LIMIT (1, 31));
}
}
bool is_utc = true;
/* 4. read time if any */
if (ecma_date_check_two_chars (date_str_curr_p, date_str_end_p, LIT_CHAR_UPPERCASE_T, LIT_CHAR_SP))
{
date_str_curr_p++;
ecma_number_t hours = ECMA_NUMBER_ZERO;
ecma_number_t minutes = ECMA_NUMBER_ZERO;
ecma_number_t seconds = ECMA_NUMBER_ZERO;
ecma_number_t milliseconds = ECMA_NUMBER_ZERO;
/* 'HH:mm' must present */
if (date_str_end_p - date_str_curr_p < 5)
{
return ecma_number_make_nan ();
}
/* 4.1 read hours and minutes */
hours = ecma_date_parse_date_chars (&date_str_curr_p, date_str_end_p, 2, ECMA_DATE_LIMIT (0, 24));
if (!ecma_date_parse_special_char (&date_str_curr_p, date_str_end_p, LIT_CHAR_COLON))
{
return ecma_number_make_nan ();
}
minutes = ecma_date_parse_date_chars (&date_str_curr_p, date_str_end_p, 2, ECMA_DATE_LIMIT (0, 59));
/* 4.2 read seconds if any */
if (ecma_date_parse_special_char (&date_str_curr_p, date_str_end_p, LIT_CHAR_COLON))
{
seconds = ecma_date_parse_date_chars (&date_str_curr_p, date_str_end_p, 2, ECMA_DATE_LIMIT (0, 59));
/* 4.3 read milliseconds if any */
if (ecma_date_parse_special_char (&date_str_curr_p, date_str_end_p, LIT_CHAR_DOT))
{
milliseconds = ecma_date_parse_date_chars (&date_str_curr_p, date_str_end_p, 3, ECMA_DATE_LIMIT (0, 999));
}
}
if (hours == 24 && (minutes != 0 || seconds != 0 || milliseconds != 0))
{
return ecma_number_make_nan ();
}
time = ecma_date_make_time (hours, minutes, seconds, milliseconds);
if (ecma_number_is_nan (time))
{
return time;
}
/* 4.4 read timezone if any */
if (!ecma_date_parse_special_char (&date_str_curr_p, date_str_end_p, LIT_CHAR_UPPERCASE_Z))
{
if ((date_str_end_p - date_str_curr_p) == 6
&& (*date_str_curr_p == LIT_CHAR_MINUS || *date_str_curr_p == LIT_CHAR_PLUS))
{
bool is_timezone_sign_negative = (*date_str_curr_p++ == LIT_CHAR_MINUS);
/* read hours and minutes */
hours = ecma_date_parse_date_chars (&date_str_curr_p, date_str_end_p, 2, ECMA_DATE_LIMIT (0, 24));
if (hours == 24)
{
hours = ECMA_NUMBER_ZERO;
}
if (!ecma_date_parse_special_char (&date_str_curr_p, date_str_end_p, LIT_CHAR_COLON))
{
return ecma_number_make_nan ();
}
minutes = ecma_date_parse_date_chars (&date_str_curr_p, date_str_end_p, 2, ECMA_DATE_LIMIT (0, 59));
ecma_number_t timezone_offset = ecma_date_make_time (hours, minutes, ECMA_NUMBER_ZERO, ECMA_NUMBER_ZERO);
time += is_timezone_sign_negative ? timezone_offset : -timezone_offset;
}
else
{
is_utc = false;
}
}
}
if (date_str_curr_p < date_str_end_p)
{
return ecma_number_make_nan ();
}
ecma_number_t date = ecma_date_make_day (year, month - 1, day);
ecma_number_t result_date = ecma_date_make_date (date, time);
if (!is_utc)
{
result_date = ecma_date_utc (result_date);
}
return result_date;
} /* ecma_builtin_date_parse_basic */
/**
* Helper function used by ecma_builtin_date_parse
*
* See also:
* ECMA-262 v5, 15.9.4.2 Date.parse (string)
* ECMA-262 v9, 20.3.4.41 Date.prototype.toString ()
* ECMA-262 v9, 20.3.4.43 Date.prototype.toUTCString ()
*
* Used by: ecma_builtin_date_parse
*
* @return the parsed date as ecma_number_t or NaN otherwise
*/
static ecma_number_t
ecma_builtin_date_parse_toString_formats (const lit_utf8_byte_t *date_str_curr_p,
const lit_utf8_byte_t *date_str_end_p)
{
const ecma_number_t nan = ecma_number_make_nan ();
if (!ecma_date_parse_day_name (&date_str_curr_p, date_str_end_p))
{
return nan;
}
const bool is_toUTCString_format = ecma_date_parse_special_char (&date_str_curr_p, date_str_end_p, LIT_CHAR_COMMA);
if (!ecma_date_parse_special_char (&date_str_curr_p, date_str_end_p, LIT_CHAR_SP))
{
return nan;
}
ecma_number_t month = 0;
ecma_number_t day = 0;
if (is_toUTCString_format)
{
day = ecma_date_parse_date_chars (&date_str_curr_p, date_str_end_p, 2, ECMA_DATE_LIMIT (0, 31));
if (ecma_number_is_nan (day))
{
return nan;
}
if (!ecma_date_parse_special_char (&date_str_curr_p, date_str_end_p, LIT_CHAR_SP))
{
return nan;
}
month = ecma_date_parse_month_name (&date_str_curr_p, date_str_end_p);
if (month == 0)
{
return ecma_number_make_nan ();
}
}
else
{
month = ecma_date_parse_month_name (&date_str_curr_p, date_str_end_p);
if (month == 0)
{
return nan;
}
if (!ecma_date_parse_special_char (&date_str_curr_p, date_str_end_p, LIT_CHAR_SP))
{
return nan;
}
day = ecma_date_parse_date_chars (&date_str_curr_p, date_str_end_p, 2, ECMA_DATE_LIMIT (0, 31));
if (ecma_number_is_nan (day))
{
return nan;
}
}
if (!ecma_date_parse_special_char (&date_str_curr_p, date_str_end_p, LIT_CHAR_SP))
{
return nan;
}
ecma_number_t year = ecma_date_parse_year (&date_str_curr_p, date_str_end_p);
if (ecma_number_is_nan (year))
{
return nan;
}
if (!ecma_date_parse_special_char (&date_str_curr_p, date_str_end_p, LIT_CHAR_SP))
{
return nan;
}
ecma_number_t hours = ecma_date_parse_date_chars (&date_str_curr_p, date_str_end_p, 2, ECMA_DATE_LIMIT (0, 24));
if (ecma_number_is_nan (hours))
{
return nan;
}
if (!ecma_date_parse_special_char (&date_str_curr_p, date_str_end_p, LIT_CHAR_COLON))
{
return nan;
}
ecma_number_t minutes = ecma_date_parse_date_chars (&date_str_curr_p, date_str_end_p, 2, ECMA_DATE_LIMIT (0, 59));
if (ecma_number_is_nan (minutes))
{
return nan;
}
if (!ecma_date_parse_special_char (&date_str_curr_p, date_str_end_p, LIT_CHAR_COLON))
{
return nan;
}
ecma_number_t seconds = ecma_date_parse_date_chars (&date_str_curr_p, date_str_end_p, 2, ECMA_DATE_LIMIT (0, 59));
if (ecma_number_is_nan (seconds))
{
return nan;
}
if (hours == 24 && (minutes != 0 || seconds != 0))
{
return nan;
}
const char gmt_p[] = " GMT";
if (date_str_end_p - date_str_curr_p < 4
|| memcmp (date_str_curr_p, gmt_p, 4) != 0)
{
return nan;
}
date_str_curr_p += 4;
ecma_number_t time = ecma_date_make_time (hours, minutes, seconds, 0);
if (!is_toUTCString_format)
{
if (!ecma_date_check_two_chars (date_str_curr_p, date_str_end_p, LIT_CHAR_MINUS, LIT_CHAR_PLUS))
{
return nan;
}
bool is_timezone_sign_negative = (*date_str_curr_p++ == LIT_CHAR_MINUS);
hours = ecma_date_parse_date_chars (&date_str_curr_p, date_str_end_p, 2, ECMA_DATE_LIMIT (0, 24));
if (ecma_number_is_nan (hours))
{
return nan;
}
if (hours == 24)
{
hours = ECMA_NUMBER_ZERO;
}
minutes = ecma_date_parse_date_chars (&date_str_curr_p, date_str_end_p, 2, ECMA_DATE_LIMIT (0, 59));
if (ecma_number_is_nan (minutes))
{
return nan;
}
ecma_number_t timezone_offset = ecma_date_make_time (hours, minutes, ECMA_NUMBER_ZERO, ECMA_NUMBER_ZERO);
time += is_timezone_sign_negative ? timezone_offset : -timezone_offset;
}
if (date_str_curr_p < date_str_end_p)
{
return nan;
}
ecma_number_t date = ecma_date_make_day (year, month - 1, day);
return ecma_date_make_date (date, time);
} /* ecma_builtin_date_parse_toString_formats */
/**
* The Date object's 'parse' routine
*
* See also:
* ECMA-262 v5, 15.9.4.2 Date.parse (string)
* ECMA-262 v5, 15.9.1.15 Date Time String Format
* ECMA-262 v9, 20.3.4.41 Date.prototype.toString ()
* ECMA-262 v9, 20.3.4.43 Date.prototype.toUTCString ()
*
* @return parsed time
*/
static ecma_number_t
ecma_builtin_date_parse (ecma_string_t *string_p) /**< string */
{
ECMA_STRING_TO_UTF8_STRING (string_p, str_p, str_size);
const lit_utf8_byte_t *date_str_curr_p = str_p;
const lit_utf8_byte_t *date_str_end_p = str_p + str_size;
/* try to parse date string as ISO string - ECMA-262 v5, 15.9.1.15 */
ecma_number_t tv = ecma_builtin_date_parse_basic (date_str_curr_p, date_str_end_p);
if (ecma_number_is_nan (tv))
{
/* try to parse date string in Date.prototype.toString() or toUTCString() format */
tv = ecma_builtin_date_parse_toString_formats (date_str_curr_p, date_str_end_p);
}
ECMA_FINALIZE_UTF8_STRING (str_p, str_size);
return tv;
} /* ecma_builtin_date_parse */
/**
* The Date object's 'UTC' routine
*
* See also:
* ECMA-262 v5, 15.9.4.3
*
* @return ecma value
* Returned value must be freed with ecma_free_value.
*/
static ecma_value_t
ecma_builtin_date_utc (const ecma_value_t args[], /**< arguments list */
uint32_t args_number) /**< number of arguments */
{
#if JERRY_ESNEXT
const uint32_t required_args_number = 1;
#else /* !JERRY_ESNEXT */
const uint32_t required_args_number = 2;
#endif /* JERRY_ESNEXT */
if (args_number < required_args_number)
{
return ecma_make_number_value (ecma_number_make_nan ());
}
ecma_number_t tv;
if (!ecma_date_construct_helper (args, args_number, &tv))
{
return ECMA_VALUE_ERROR;
}
return ecma_make_number_value ((ecma_number_t) ecma_date_time_clip (tv));
} /* ecma_builtin_date_utc */
/**
* Helper method to get the current time
*
* @return ecma_number_t
*/
static ecma_number_t
ecma_builtin_date_now_helper (void)
{
return floor (DOUBLE_TO_ECMA_NUMBER_T (jerry_port_get_current_time ()));
} /* ecma_builtin_date_now_helper */
/**
* Construct a date object with the given [[DateValue]]
*
* Note: New target must be a valid object
*
* @return ECMA_VALUE_ERROR - if the operation fails
* constructed date object - otherwise
*/
static ecma_value_t
ecma_builtin_date_create (ecma_number_t tv)
{
#if JERRY_ESNEXT
JERRY_ASSERT (JERRY_CONTEXT (current_new_target_p) != NULL);
ecma_object_t *prototype_obj_p = ecma_op_get_prototype_from_constructor (JERRY_CONTEXT (current_new_target_p),
ECMA_BUILTIN_ID_DATE_PROTOTYPE);
if (JERRY_UNLIKELY (prototype_obj_p == NULL))
{
return ECMA_VALUE_ERROR;
}
ecma_object_t *obj_p = ecma_create_object (prototype_obj_p, sizeof (ecma_date_object_t), ECMA_OBJECT_TYPE_CLASS);
ecma_deref_object (prototype_obj_p);
ecma_date_object_t *date_object_p = (ecma_date_object_t *) obj_p;
date_object_p->header.u.class_prop.class_id = LIT_MAGIC_STRING_DATE_UL;
date_object_p->header.u.class_prop.u.tza = 0;
date_object_p->header.u.class_prop.extra_info = ECMA_DATE_TZA_NONE;
date_object_p->date_value = tv;
#else /* !JERRY_ESNEXT */
ecma_number_t *date_value_p = ecma_alloc_number ();
*date_value_p = tv;
ecma_object_t *prototype_obj_p = ecma_builtin_get (ECMA_BUILTIN_ID_DATE_PROTOTYPE);
ecma_object_t *obj_p = ecma_create_object (prototype_obj_p, sizeof (ecma_extended_object_t), ECMA_OBJECT_TYPE_CLASS);
ecma_extended_object_t *ext_object_p = (ecma_extended_object_t *) obj_p;
ext_object_p->u.class_prop.class_id = LIT_MAGIC_STRING_DATE_UL;
ECMA_SET_INTERNAL_VALUE_POINTER (ext_object_p->u.class_prop.u.date, date_value_p);
#endif /* JERRY_ESNEXT */
return ecma_make_object_value (obj_p);
} /* ecma_builtin_date_create */
/**
* Handle calling [[Call]] of built-in Date object
*
* See also:
* ECMA-262 v5, 15.9.2.1
*
* @return ecma value
*/
ecma_value_t
ecma_builtin_date_dispatch_call (const ecma_value_t *arguments_list_p, /**< arguments list */
uint32_t arguments_list_len) /**< number of arguments */
{
JERRY_UNUSED (arguments_list_p);
JERRY_UNUSED (arguments_list_len);
return ecma_date_value_to_string (ecma_builtin_date_now_helper ());
} /* ecma_builtin_date_dispatch_call */
/**
* Handle calling [[Construct]] of built-in Date object
*
* See also:
* ECMA-262 v5, 15.9.3.1
* ECMA-262 v11, 20.4.2
*
* @return ecma value
*/
ecma_value_t
ecma_builtin_date_dispatch_construct (const ecma_value_t *arguments_list_p, /**< arguments list */
uint32_t arguments_list_len) /**< number of arguments */
{
/* 20.4.2.3 */
if (arguments_list_len == 0)
{
return ecma_builtin_date_create (ecma_builtin_date_now_helper ());
}
ecma_number_t tv;
/* 20.4.2.2 */
if (arguments_list_len == 1)
{
ecma_value_t argument = arguments_list_p[0];
/* 4.a */
if (ecma_is_value_object (argument)
&& ecma_object_class_is (ecma_get_object_from_value (argument), LIT_MAGIC_STRING_DATE_UL))
{
#if JERRY_ESNEXT
tv = ((ecma_date_object_t *) ecma_get_object_from_value (argument))->date_value;
#else /* !JERRY_ESNEXT */
ecma_extended_object_t *arg_ext_object_p = (ecma_extended_object_t *) ecma_get_object_from_value (argument);
tv = *ECMA_GET_INTERNAL_VALUE_POINTER (ecma_number_t, arg_ext_object_p->u.class_prop.u.date);
#endif /* JERRY_ESNEXT */
return ecma_builtin_date_create (tv);
}
/* 4.b */
ecma_value_t primitive = ecma_op_to_primitive (argument, ECMA_PREFERRED_TYPE_NO);
if (ECMA_IS_VALUE_ERROR (primitive))
{
return primitive;
}
if (ecma_is_value_string (primitive))
{
ecma_string_t *prim_str_p = ecma_get_string_from_value (primitive);
tv = ecma_builtin_date_parse (prim_str_p);
ecma_deref_ecma_string (prim_str_p);
}
else
{
ecma_value_t prim_value = ecma_op_to_number (primitive, &tv);
ecma_free_value (primitive);
if (ECMA_IS_VALUE_ERROR (prim_value))
{
return prim_value;
}
}
}
/* 20.4.2.1 */
else if (ecma_date_construct_helper (arguments_list_p, arguments_list_len, &tv))
{
tv = ecma_date_utc (tv);
}
else
{
return ECMA_VALUE_ERROR;
}
return ecma_builtin_date_create (ecma_date_time_clip (tv));
} /* ecma_builtin_date_dispatch_construct */
/**
* Dispatcher of the built-in's routines
*
* @return ecma value
* Returned value must be freed with ecma_free_value.
*/
ecma_value_t
ecma_builtin_date_dispatch_routine (uint8_t builtin_routine_id, /**< built-in wide routine identifier */
ecma_value_t this_arg, /**< 'this' argument value */
const ecma_value_t arguments_list_p[], /**< list of arguments passed to routine */
uint32_t arguments_number) /**< length of arguments' list */
{
JERRY_UNUSED (this_arg);
switch (builtin_routine_id)
{
case ECMA_DATE_ROUTINE_NOW:
{
return ecma_make_number_value (ecma_builtin_date_now_helper ());
}
case ECMA_DATE_ROUTINE_UTC:
{
return ecma_builtin_date_utc (arguments_list_p, arguments_number);
}
case ECMA_DATE_ROUTINE_PARSE:
{
if (arguments_number < 1)
{
return ecma_make_number_value (ecma_number_make_nan ());
}
ecma_string_t *str_p = ecma_op_to_string (arguments_list_p[0]);
if (JERRY_UNLIKELY (str_p == NULL))
{
return ECMA_VALUE_ERROR;
}
ecma_value_t result = ecma_make_number_value (ecma_date_time_clip (ecma_builtin_date_parse (str_p)));
ecma_deref_ecma_string (str_p);
return result;
}
default:
{
JERRY_UNREACHABLE ();
}
}
} /* ecma_builtin_date_dispatch_routine */
/**
* @}
* @}
* @}
*/
#endif /* JERRY_BUILTIN_DATE */