http://git-wip-us.apache.org/repos/asf/nifi-minifi-cpp/blob/df353561/thirdparty/civetweb-1.10/src/third_party/duktape-1.5.2/src-separate/duk_bi_date.c ---------------------------------------------------------------------- diff --git a/thirdparty/civetweb-1.10/src/third_party/duktape-1.5.2/src-separate/duk_bi_date.c b/thirdparty/civetweb-1.10/src/third_party/duktape-1.5.2/src-separate/duk_bi_date.c new file mode 100644 index 0000000..1d5c7b7 --- /dev/null +++ b/thirdparty/civetweb-1.10/src/third_party/duktape-1.5.2/src-separate/duk_bi_date.c @@ -0,0 +1,1728 @@ +/* + * Date built-ins + * + * Unlike most built-ins, Date has some platform dependencies for getting + * UTC time, converting between UTC and local time, and parsing and + * formatting time values. These are all abstracted behind DUK_USE_xxx + * config options. There are built-in platform specific providers for + * POSIX and Windows, but external providers can also be used. + * + * See doc/datetime.rst. + * + */ + +#include "duk_internal.h" + +/* + * Forward declarations + */ + +DUK_LOCAL_DECL duk_double_t duk__push_this_get_timeval_tzoffset(duk_context *ctx, duk_small_uint_t flags, duk_int_t *out_tzoffset); +DUK_LOCAL_DECL duk_double_t duk__push_this_get_timeval(duk_context *ctx, duk_small_uint_t flags); +DUK_LOCAL_DECL void duk__twodigit_year_fixup(duk_context *ctx, duk_idx_t idx_val); +DUK_LOCAL_DECL duk_ret_t duk__set_this_timeval_from_dparts(duk_context *ctx, duk_double_t *dparts, duk_small_uint_t flags); + +/* + * Other file level defines + */ + +/* Debug macro to print all parts and dparts (used manually because of debug level). */ +#define DUK__DPRINT_PARTS_AND_DPARTS(parts,dparts) do { \ + DUK_D(DUK_DPRINT("parts: %ld %ld %ld %ld %ld %ld %ld %ld, dparts: %lf %lf %lf %lf %lf %lf %lf %lf", \ + (long) (parts)[0], (long) (parts)[1], \ + (long) (parts)[2], (long) (parts)[3], \ + (long) (parts)[4], (long) (parts)[5], \ + (long) (parts)[6], (long) (parts)[7], \ + (double) (dparts)[0], (double) (dparts)[1], \ + (double) (dparts)[2], (double) (dparts)[3], \ + (double) (dparts)[4], (double) (dparts)[5], \ + (double) (dparts)[6], (double) (dparts)[7])); \ + } while (0) +#define DUK__DPRINT_PARTS(parts) do { \ + DUK_D(DUK_DPRINT("parts: %ld %ld %ld %ld %ld %ld %ld %ld", \ + (long) (parts)[0], (long) (parts)[1], \ + (long) (parts)[2], (long) (parts)[3], \ + (long) (parts)[4], (long) (parts)[5], \ + (long) (parts)[6], (long) (parts)[7])); \ + } while (0) +#define DUK__DPRINT_DPARTS(dparts) do { \ + DUK_D(DUK_DPRINT("dparts: %lf %lf %lf %lf %lf %lf %lf %lf", \ + (double) (dparts)[0], (double) (dparts)[1], \ + (double) (dparts)[2], (double) (dparts)[3], \ + (double) (dparts)[4], (double) (dparts)[5], \ + (double) (dparts)[6], (double) (dparts)[7])); \ + } while (0) + +/* Equivalent year for DST calculations outside [1970,2038[ range, see + * E5 Section 15.9.1.8. Equivalent year has the same leap-year-ness and + * starts with the same weekday on Jan 1. + * https://bugzilla.mozilla.org/show_bug.cgi?id=351066 + */ +#define DUK__YEAR(x) ((duk_uint8_t) ((x) - 1970)) +DUK_LOCAL duk_uint8_t duk__date_equivyear[14] = { +#if 1 + /* This is based on V8 EquivalentYear() algorithm (see src/genequivyear.py): + * http://code.google.com/p/v8/source/browse/trunk/src/date.h#146 + */ + + /* non-leap year: sunday, monday, ... */ + DUK__YEAR(2023), DUK__YEAR(2035), DUK__YEAR(2019), DUK__YEAR(2031), + DUK__YEAR(2015), DUK__YEAR(2027), DUK__YEAR(2011), + + /* leap year: sunday, monday, ... */ + DUK__YEAR(2012), DUK__YEAR(2024), DUK__YEAR(2008), DUK__YEAR(2020), + DUK__YEAR(2032), DUK__YEAR(2016), DUK__YEAR(2028) +#endif + +#if 0 + /* This is based on Rhino EquivalentYear() algorithm: + * https://github.com/mozilla/rhino/blob/f99cc11d616f0cdda2c42bde72b3484df6182947/src/org/mozilla/javascript/NativeDate.java + */ + + /* non-leap year: sunday, monday, ... */ + DUK__YEAR(1978), DUK__YEAR(1973), DUK__YEAR(1985), DUK__YEAR(1986), + DUK__YEAR(1981), DUK__YEAR(1971), DUK__YEAR(1977), + + /* leap year: sunday, monday, ... */ + DUK__YEAR(1984), DUK__YEAR(1996), DUK__YEAR(1980), DUK__YEAR(1992), + DUK__YEAR(1976), DUK__YEAR(1988), DUK__YEAR(1972) +#endif +}; +#undef DUK__YEAR + +/* + * ISO 8601 subset parser. + */ + +/* Parser part count. */ +#define DUK__NUM_ISO8601_PARSER_PARTS 9 + +/* Parser part indices. */ +#define DUK__PI_YEAR 0 +#define DUK__PI_MONTH 1 +#define DUK__PI_DAY 2 +#define DUK__PI_HOUR 3 +#define DUK__PI_MINUTE 4 +#define DUK__PI_SECOND 5 +#define DUK__PI_MILLISECOND 6 +#define DUK__PI_TZHOUR 7 +#define DUK__PI_TZMINUTE 8 + +/* Parser part masks. */ +#define DUK__PM_YEAR (1 << DUK__PI_YEAR) +#define DUK__PM_MONTH (1 << DUK__PI_MONTH) +#define DUK__PM_DAY (1 << DUK__PI_DAY) +#define DUK__PM_HOUR (1 << DUK__PI_HOUR) +#define DUK__PM_MINUTE (1 << DUK__PI_MINUTE) +#define DUK__PM_SECOND (1 << DUK__PI_SECOND) +#define DUK__PM_MILLISECOND (1 << DUK__PI_MILLISECOND) +#define DUK__PM_TZHOUR (1 << DUK__PI_TZHOUR) +#define DUK__PM_TZMINUTE (1 << DUK__PI_TZMINUTE) + +/* Parser separator indices. */ +#define DUK__SI_PLUS 0 +#define DUK__SI_MINUS 1 +#define DUK__SI_T 2 +#define DUK__SI_SPACE 3 +#define DUK__SI_COLON 4 +#define DUK__SI_PERIOD 5 +#define DUK__SI_Z 6 +#define DUK__SI_NUL 7 + +/* Parser separator masks. */ +#define DUK__SM_PLUS (1 << DUK__SI_PLUS) +#define DUK__SM_MINUS (1 << DUK__SI_MINUS) +#define DUK__SM_T (1 << DUK__SI_T) +#define DUK__SM_SPACE (1 << DUK__SI_SPACE) +#define DUK__SM_COLON (1 << DUK__SI_COLON) +#define DUK__SM_PERIOD (1 << DUK__SI_PERIOD) +#define DUK__SM_Z (1 << DUK__SI_Z) +#define DUK__SM_NUL (1 << DUK__SI_NUL) + +/* Rule control flags. */ +#define DUK__CF_NEG (1 << 0) /* continue matching, set neg_tzoffset flag */ +#define DUK__CF_ACCEPT (1 << 1) /* accept string */ +#define DUK__CF_ACCEPT_NUL (1 << 2) /* accept string if next char is NUL (otherwise reject) */ + +#define DUK__PACK_RULE(partmask,sepmask,nextpart,flags) \ + ((duk_uint32_t) (partmask) + \ + (((duk_uint32_t) (sepmask)) << 9) + \ + (((duk_uint32_t) (nextpart)) << 17) + \ + (((duk_uint32_t) (flags)) << 21)) + +#define DUK__UNPACK_RULE(rule,var_nextidx,var_flags) do { \ + (var_nextidx) = (duk_small_uint_t) (((rule) >> 17) & 0x0f); \ + (var_flags) = (duk_small_uint_t) ((rule) >> 21); \ + } while (0) + +#define DUK__RULE_MASK_PART_SEP 0x1ffffUL + +/* Matching separator index is used in the control table */ +DUK_LOCAL const duk_uint8_t duk__parse_iso8601_seps[] = { + DUK_ASC_PLUS /*0*/, DUK_ASC_MINUS /*1*/, DUK_ASC_UC_T /*2*/, DUK_ASC_SPACE /*3*/, + DUK_ASC_COLON /*4*/, DUK_ASC_PERIOD /*5*/, DUK_ASC_UC_Z /*6*/, DUK_ASC_NUL /*7*/ +}; + +/* Rule table: first matching rule is used to determine what to do next. */ +DUK_LOCAL const duk_uint32_t duk__parse_iso8601_control[] = { + DUK__PACK_RULE(DUK__PM_YEAR, DUK__SM_MINUS, DUK__PI_MONTH, 0), + DUK__PACK_RULE(DUK__PM_MONTH, DUK__SM_MINUS, DUK__PI_DAY, 0), + DUK__PACK_RULE(DUK__PM_YEAR | DUK__PM_MONTH | DUK__PM_DAY, DUK__SM_T | DUK__SM_SPACE, DUK__PI_HOUR, 0), + DUK__PACK_RULE(DUK__PM_HOUR, DUK__SM_COLON, DUK__PI_MINUTE, 0), + DUK__PACK_RULE(DUK__PM_MINUTE, DUK__SM_COLON, DUK__PI_SECOND, 0), + DUK__PACK_RULE(DUK__PM_SECOND, DUK__SM_PERIOD, DUK__PI_MILLISECOND, 0), + DUK__PACK_RULE(DUK__PM_TZHOUR, DUK__SM_COLON, DUK__PI_TZMINUTE, 0), + DUK__PACK_RULE(DUK__PM_YEAR | DUK__PM_MONTH | DUK__PM_DAY | DUK__PM_HOUR /*Note1*/ | DUK__PM_MINUTE | DUK__PM_SECOND | DUK__PM_MILLISECOND, DUK__SM_PLUS, DUK__PI_TZHOUR, 0), + DUK__PACK_RULE(DUK__PM_YEAR | DUK__PM_MONTH | DUK__PM_DAY | DUK__PM_HOUR /*Note1*/ | DUK__PM_MINUTE | DUK__PM_SECOND | DUK__PM_MILLISECOND, DUK__SM_MINUS, DUK__PI_TZHOUR, DUK__CF_NEG), + DUK__PACK_RULE(DUK__PM_YEAR | DUK__PM_MONTH | DUK__PM_DAY | DUK__PM_HOUR /*Note1*/ | DUK__PM_MINUTE | DUK__PM_SECOND | DUK__PM_MILLISECOND, DUK__SM_Z, 0, DUK__CF_ACCEPT_NUL), + DUK__PACK_RULE(DUK__PM_YEAR | DUK__PM_MONTH | DUK__PM_DAY | DUK__PM_HOUR /*Note1*/ | DUK__PM_MINUTE | DUK__PM_SECOND | DUK__PM_MILLISECOND | DUK__PM_TZHOUR /*Note2*/ | DUK__PM_TZMINUTE, DUK__SM_NUL, 0, DUK__CF_ACCEPT) + + /* Note1: the specification doesn't require matching a time form with + * just hours ("HH"), but we accept it here, e.g. "2012-01-02T12Z". + * + * Note2: the specification doesn't require matching a timezone offset + * with just hours ("HH"), but accept it here, e.g. "2012-01-02T03:04:05+02" + */ +}; + +DUK_LOCAL duk_bool_t duk__parse_string_iso8601_subset(duk_context *ctx, const char *str) { + duk_int_t parts[DUK__NUM_ISO8601_PARSER_PARTS]; + duk_double_t dparts[DUK_DATE_IDX_NUM_PARTS]; + duk_double_t d; + const duk_uint8_t *p; + duk_small_uint_t part_idx = 0; + duk_int_t accum = 0; + duk_small_uint_t ndigits = 0; + duk_bool_t neg_year = 0; + duk_bool_t neg_tzoffset = 0; + duk_uint_fast8_t ch; + duk_small_uint_t i; + + /* During parsing, month and day are one-based; set defaults here. */ + DUK_MEMZERO(parts, sizeof(parts)); + DUK_ASSERT(parts[DUK_DATE_IDX_YEAR] == 0); /* don't care value, year is mandatory */ + parts[DUK_DATE_IDX_MONTH] = 1; + parts[DUK_DATE_IDX_DAY] = 1; + + /* Special handling for year sign. */ + p = (const duk_uint8_t *) str; + ch = p[0]; + if (ch == DUK_ASC_PLUS) { + p++; + } else if (ch == DUK_ASC_MINUS) { + neg_year = 1; + p++; + } + + for (;;) { + ch = *p++; + DUK_DDD(DUK_DDDPRINT("parsing, part_idx=%ld, char=%ld ('%c')", + (long) part_idx, (long) ch, + (int) ((ch >= 0x20 && ch <= 0x7e) ? ch : DUK_ASC_QUESTION))); + + if (ch >= DUK_ASC_0 && ch <= DUK_ASC_9) { + if (ndigits >= 9) { + DUK_DDD(DUK_DDDPRINT("too many digits -> reject")); + goto reject; + } + if (part_idx == DUK__PI_MILLISECOND /*msec*/ && ndigits >= 3) { + /* ignore millisecond fractions after 3 */ + } else { + accum = accum * 10 + ((duk_int_t) ch) - ((duk_int_t) DUK_ASC_0) + 0x00; + ndigits++; + } + } else { + duk_uint_fast32_t match_val; + duk_small_int_t sep_idx; + + if (ndigits <= 0) { + goto reject; + } + if (part_idx == DUK__PI_MILLISECOND) { + /* complete the millisecond field */ + while (ndigits < 3) { + accum *= 10; + ndigits++; + } + } + parts[part_idx] = accum; + DUK_DDD(DUK_DDDPRINT("wrote part %ld -> value %ld", (long) part_idx, (long) accum)); + + accum = 0; + ndigits = 0; + + for (i = 0; i < (duk_small_uint_t) (sizeof(duk__parse_iso8601_seps) / sizeof(duk_uint8_t)); i++) { + if (duk__parse_iso8601_seps[i] == ch) { + break; + } + } + if (i == (duk_small_uint_t) (sizeof(duk__parse_iso8601_seps) / sizeof(duk_uint8_t))) { + DUK_DDD(DUK_DDDPRINT("separator character doesn't match -> reject")); + goto reject; + } + + sep_idx = i; + match_val = (1UL << part_idx) + (1UL << (sep_idx + 9)); /* match against rule part/sep bits */ + + for (i = 0; i < (duk_small_uint_t) (sizeof(duk__parse_iso8601_control) / sizeof(duk_uint32_t)); i++) { + duk_uint_fast32_t rule = duk__parse_iso8601_control[i]; + duk_small_uint_t nextpart; + duk_small_uint_t cflags; + + DUK_DDD(DUK_DDDPRINT("part_idx=%ld, sep_idx=%ld, match_val=0x%08lx, considering rule=0x%08lx", + (long) part_idx, (long) sep_idx, + (unsigned long) match_val, (unsigned long) rule)); + + if ((rule & match_val) != match_val) { + continue; + } + + DUK__UNPACK_RULE(rule, nextpart, cflags); + + DUK_DDD(DUK_DDDPRINT("rule match -> part_idx=%ld, sep_idx=%ld, match_val=0x%08lx, " + "rule=0x%08lx -> nextpart=%ld, cflags=0x%02lx", + (long) part_idx, (long) sep_idx, + (unsigned long) match_val, (unsigned long) rule, + (long) nextpart, (unsigned long) cflags)); + + if (cflags & DUK__CF_NEG) { + neg_tzoffset = 1; + } + + if (cflags & DUK__CF_ACCEPT) { + goto accept; + } + + if (cflags & DUK__CF_ACCEPT_NUL) { + DUK_ASSERT(*(p - 1) != (char) 0); + if (*p == DUK_ASC_NUL) { + goto accept; + } + goto reject; + } + + part_idx = nextpart; + break; + } /* rule match */ + + if (i == (duk_small_uint_t) (sizeof(duk__parse_iso8601_control) / sizeof(duk_uint32_t))) { + DUK_DDD(DUK_DDDPRINT("no rule matches -> reject")); + goto reject; + } + + if (ch == 0) { + /* This shouldn't be necessary, but check just in case + * to avoid any chance of overruns. + */ + DUK_DDD(DUK_DDDPRINT("NUL after rule matching (should not happen) -> reject")); + goto reject; + } + } /* if-digit-else-ctrl */ + } /* char loop */ + + /* We should never exit the loop above. */ + DUK_UNREACHABLE(); + + reject: + DUK_DDD(DUK_DDDPRINT("reject")); + return 0; + + accept: + DUK_DDD(DUK_DDDPRINT("accept")); + + /* Apply timezone offset to get the main parts in UTC */ + if (neg_year) { + parts[DUK__PI_YEAR] = -parts[DUK__PI_YEAR]; + } + if (neg_tzoffset) { + parts[DUK__PI_HOUR] += parts[DUK__PI_TZHOUR]; + parts[DUK__PI_MINUTE] += parts[DUK__PI_TZMINUTE]; + } else { + parts[DUK__PI_HOUR] -= parts[DUK__PI_TZHOUR]; + parts[DUK__PI_MINUTE] -= parts[DUK__PI_TZMINUTE]; + } + parts[DUK__PI_MONTH] -= 1; /* zero-based month */ + parts[DUK__PI_DAY] -= 1; /* zero-based day */ + + /* Use double parts, they tolerate unnormalized time. + * + * Note: DUK_DATE_IDX_WEEKDAY is initialized with a bogus value (DUK__PI_TZHOUR) + * on purpose. It won't be actually used by duk_bi_date_get_timeval_from_dparts(), + * but will make the value initialized just in case, and avoid any + * potential for Valgrind issues. + */ + for (i = 0; i < DUK_DATE_IDX_NUM_PARTS; i++) { + DUK_DDD(DUK_DDDPRINT("part[%ld] = %ld", (long) i, (long) parts[i])); + dparts[i] = parts[i]; + } + + d = duk_bi_date_get_timeval_from_dparts(dparts, 0 /*flags*/); + duk_push_number(ctx, d); + return 1; +} + +/* + * Date/time parsing helper. + * + * Parse a datetime string into a time value. We must first try to parse + * the input according to the standard format in E5.1 Section 15.9.1.15. + * If that fails, we can try to parse using custom parsing, which can + * either be platform neutral (custom code) or platform specific (using + * existing platform API calls). + * + * Note in particular that we must parse whatever toString(), toUTCString(), + * and toISOString() can produce; see E5.1 Section 15.9.4.2. + * + * Returns 1 to allow tail calling. + * + * There is much room for improvement here with respect to supporting + * alternative datetime formats. For instance, V8 parses '2012-01-01' as + * UTC and '2012/01/01' as local time. + */ + +DUK_LOCAL duk_ret_t duk__parse_string(duk_context *ctx, const char *str) { + /* XXX: there is a small risk here: because the ISO 8601 parser is + * very loose, it may end up parsing some datetime values which + * would be better parsed with a platform specific parser. + */ + + DUK_ASSERT(str != NULL); + DUK_DDD(DUK_DDDPRINT("parse datetime from string '%s'", (const char *) str)); + + if (duk__parse_string_iso8601_subset(ctx, str) != 0) { + return 1; + } + +#if defined(DUK_USE_DATE_PARSE_STRING) + /* Contract, either: + * - Push value on stack and return 1 + * - Don't push anything on stack and return 0 + */ + + if (DUK_USE_DATE_PARSE_STRING(ctx, str) != 0) { + return 1; + } +#else + /* No platform-specific parsing, this is not an error. */ +#endif + + duk_push_nan(ctx); + return 1; +} + +/* + * Calendar helpers + * + * Some helpers are used for getters and can operate on normalized values + * which can be represented with 32-bit signed integers. Other helpers are + * needed by setters and operate on un-normalized double values, must watch + * out for non-finite numbers etc. + */ + +DUK_LOCAL duk_uint8_t duk__days_in_month[12] = { + (duk_uint8_t) 31, (duk_uint8_t) 28, (duk_uint8_t) 31, (duk_uint8_t) 30, + (duk_uint8_t) 31, (duk_uint8_t) 30, (duk_uint8_t) 31, (duk_uint8_t) 31, + (duk_uint8_t) 30, (duk_uint8_t) 31, (duk_uint8_t) 30, (duk_uint8_t) 31 +}; + +/* Maximum iteration count for computing UTC-to-local time offset when + * creating an Ecmascript time value from local parts. + */ +#define DUK__LOCAL_TZOFFSET_MAXITER 4 + +/* Because 'day since epoch' can be negative and is used to compute weekday + * using a modulo operation, add this multiple of 7 to avoid negative values + * when year is below 1970 epoch. Ecmascript time values are restricted to + * +/- 100 million days from epoch, so this adder fits nicely into 32 bits. + * Round to a multiple of 7 (= floor(100000000 / 7) * 7) and add margin. + */ +#define DUK__WEEKDAY_MOD_ADDER (20000000 * 7) /* 0x08583b00 */ + +DUK_INTERNAL duk_bool_t duk_bi_date_is_leap_year(duk_int_t year) { + if ((year % 4) != 0) { + return 0; + } + if ((year % 100) != 0) { + return 1; + } + if ((year % 400) != 0) { + return 0; + } + return 1; +} + +DUK_INTERNAL duk_bool_t duk_bi_date_timeval_in_valid_range(duk_double_t x) { + return (x >= -DUK_DATE_MSEC_100M_DAYS && x <= DUK_DATE_MSEC_100M_DAYS); +} + +DUK_INTERNAL duk_bool_t duk_bi_date_timeval_in_leeway_range(duk_double_t x) { + return (x >= -DUK_DATE_MSEC_100M_DAYS_LEEWAY && x <= DUK_DATE_MSEC_100M_DAYS_LEEWAY); +} + +DUK_INTERNAL duk_bool_t duk_bi_date_year_in_valid_range(duk_double_t x) { + return (x >= DUK_DATE_MIN_ECMA_YEAR && x <= DUK_DATE_MAX_ECMA_YEAR); +} + +DUK_LOCAL duk_double_t duk__timeclip(duk_double_t x) { + if (!DUK_ISFINITE(x)) { + return DUK_DOUBLE_NAN; + } + + if (!duk_bi_date_timeval_in_valid_range(x)) { + return DUK_DOUBLE_NAN; + } + + x = duk_js_tointeger_number(x); + + /* Here we'd have the option to normalize -0 to +0. */ + return x; +} + +/* Integer division which floors also negative values correctly. */ +DUK_LOCAL duk_int_t duk__div_floor(duk_int_t a, duk_int_t b) { + DUK_ASSERT(b > 0); + if (a >= 0) { + return a / b; + } else { + /* e.g. a = -4, b = 5 --> -4 - 5 + 1 / 5 --> -8 / 5 --> -1 + * a = -5, b = 5 --> -5 - 5 + 1 / 5 --> -9 / 5 --> -1 + * a = -6, b = 5 --> -6 - 5 + 1 / 5 --> -10 / 5 --> -2 + */ + return (a - b + 1) / b; + } +} + +/* Compute day number of the first day of a given year. */ +DUK_LOCAL duk_int_t duk__day_from_year(duk_int_t year) { + /* Note: in integer arithmetic, (x / 4) is same as floor(x / 4) for non-negative + * values, but is incorrect for negative ones. + */ + return 365 * (year - 1970) + + duk__div_floor(year - 1969, 4) + - duk__div_floor(year - 1901, 100) + + duk__div_floor(year - 1601, 400); +} + +/* Given a day number, determine year and day-within-year. */ +DUK_LOCAL duk_int_t duk__year_from_day(duk_int_t day, duk_small_int_t *out_day_within_year) { + duk_int_t year; + duk_int_t diff_days; + + /* estimate year upwards (towards positive infinity), then back down; + * two iterations should be enough + */ + + if (day >= 0) { + year = 1970 + day / 365; + } else { + year = 1970 + day / 366; + } + + for (;;) { + diff_days = duk__day_from_year(year) - day; + DUK_DDD(DUK_DDDPRINT("year=%ld day=%ld, diff_days=%ld", (long) year, (long) day, (long) diff_days)); + if (diff_days <= 0) { + DUK_ASSERT(-diff_days < 366); /* fits into duk_small_int_t */ + *out_day_within_year = -diff_days; + DUK_DDD(DUK_DDDPRINT("--> year=%ld, day-within-year=%ld", + (long) year, (long) *out_day_within_year)); + DUK_ASSERT(*out_day_within_year >= 0); + DUK_ASSERT(*out_day_within_year < (duk_bi_date_is_leap_year(year) ? 366 : 365)); + return year; + } + + /* Note: this is very tricky; we must never 'overshoot' the + * correction downwards. + */ + year -= 1 + (diff_days - 1) / 366; /* conservative */ + } +} + +/* Given a (year, month, day-within-month) triple, compute day number. + * The input triple is un-normalized and may contain non-finite values. + */ +DUK_LOCAL duk_double_t duk__make_day(duk_double_t year, duk_double_t month, duk_double_t day) { + duk_int_t day_num; + duk_bool_t is_leap; + duk_small_int_t i, n; + + /* Assume that year, month, day are all coerced to whole numbers. + * They may also be NaN or infinity, in which case this function + * must return NaN or infinity to ensure time value becomes NaN. + * If 'day' is NaN, the final return will end up returning a NaN, + * so it doesn't need to be checked here. + */ + + if (!DUK_ISFINITE(year) || !DUK_ISFINITE(month)) { + return DUK_DOUBLE_NAN; + } + + year += DUK_FLOOR(month / 12.0); + + month = DUK_FMOD(month, 12.0); + if (month < 0.0) { + /* handle negative values */ + month += 12.0; + } + + /* The algorithm in E5.1 Section 15.9.1.12 normalizes month, but + * does not normalize the day-of-month (nor check whether or not + * it is finite) because it's not necessary for finding the day + * number which matches the (year,month) pair. + * + * We assume that duk__day_from_year() is exact here. + * + * Without an explicit infinity / NaN check in the beginning, + * day_num would be a bogus integer here. + * + * It's possible for 'year' to be out of integer range here. + * If so, we need to return NaN without integer overflow. + * This fixes test-bug-setyear-overflow.js. + */ + + if (!duk_bi_date_year_in_valid_range(year)) { + DUK_DD(DUK_DDPRINT("year not in ecmascript valid range, avoid integer overflow: %lf", (double) year)); + return DUK_DOUBLE_NAN; + } + day_num = duk__day_from_year((duk_int_t) year); + is_leap = duk_bi_date_is_leap_year((duk_int_t) year); + + n = (duk_small_int_t) month; + for (i = 0; i < n; i++) { + day_num += duk__days_in_month[i]; + if (i == 1 && is_leap) { + day_num++; + } + } + + /* If 'day' is NaN, returns NaN. */ + return (duk_double_t) day_num + day; +} + +/* Split time value into parts. The time value is assumed to be an internal + * one, i.e. finite, no fractions. Possible local time adjustment has already + * been applied when reading the time value. + */ +DUK_INTERNAL void duk_bi_date_timeval_to_parts(duk_double_t d, duk_int_t *parts, duk_double_t *dparts, duk_small_uint_t flags) { + duk_double_t d1, d2; + duk_int_t t1, t2; + duk_int_t day_since_epoch; + duk_int_t year; /* does not fit into 16 bits */ + duk_small_int_t day_in_year; + duk_small_int_t month; + duk_small_int_t day; + duk_small_int_t dim; + duk_int_t jan1_since_epoch; + duk_small_int_t jan1_weekday; + duk_int_t equiv_year; + duk_small_uint_t i; + duk_bool_t is_leap; + duk_small_int_t arridx; + + DUK_ASSERT(DUK_ISFINITE(d)); /* caller checks */ + DUK_ASSERT(DUK_FLOOR(d) == d); /* no fractions in internal time */ + + /* The timevalue must be in valid Ecmascript range, but since a local + * time offset can be applied, we need to allow a +/- 24h leeway to + * the value. In other words, although the UTC time is within the + * Ecmascript range, the local part values can be just outside of it. + */ + DUK_UNREF(duk_bi_date_timeval_in_leeway_range); + DUK_ASSERT(duk_bi_date_timeval_in_leeway_range(d)); + + /* these computations are guaranteed to be exact for the valid + * E5 time value range, assuming milliseconds without fractions. + */ + d1 = (duk_double_t) DUK_FMOD(d, (double) DUK_DATE_MSEC_DAY); + if (d1 < 0.0) { + /* deal with negative values */ + d1 += (duk_double_t) DUK_DATE_MSEC_DAY; + } + d2 = DUK_FLOOR((double) (d / (duk_double_t) DUK_DATE_MSEC_DAY)); + DUK_ASSERT(d2 * ((duk_double_t) DUK_DATE_MSEC_DAY) + d1 == d); + /* now expected to fit into a 32-bit integer */ + t1 = (duk_int_t) d1; + t2 = (duk_int_t) d2; + day_since_epoch = t2; + DUK_ASSERT((duk_double_t) t1 == d1); + DUK_ASSERT((duk_double_t) t2 == d2); + + /* t1 = milliseconds within day (fits 32 bit) + * t2 = day number from epoch (fits 32 bit, may be negative) + */ + + parts[DUK_DATE_IDX_MILLISECOND] = t1 % 1000; t1 /= 1000; + parts[DUK_DATE_IDX_SECOND] = t1 % 60; t1 /= 60; + parts[DUK_DATE_IDX_MINUTE] = t1 % 60; t1 /= 60; + parts[DUK_DATE_IDX_HOUR] = t1; + DUK_ASSERT(parts[DUK_DATE_IDX_MILLISECOND] >= 0 && parts[DUK_DATE_IDX_MILLISECOND] <= 999); + DUK_ASSERT(parts[DUK_DATE_IDX_SECOND] >= 0 && parts[DUK_DATE_IDX_SECOND] <= 59); + DUK_ASSERT(parts[DUK_DATE_IDX_MINUTE] >= 0 && parts[DUK_DATE_IDX_MINUTE] <= 59); + DUK_ASSERT(parts[DUK_DATE_IDX_HOUR] >= 0 && parts[DUK_DATE_IDX_HOUR] <= 23); + + DUK_DDD(DUK_DDDPRINT("d=%lf, d1=%lf, d2=%lf, t1=%ld, t2=%ld, parts: hour=%ld min=%ld sec=%ld msec=%ld", + (double) d, (double) d1, (double) d2, (long) t1, (long) t2, + (long) parts[DUK_DATE_IDX_HOUR], + (long) parts[DUK_DATE_IDX_MINUTE], + (long) parts[DUK_DATE_IDX_SECOND], + (long) parts[DUK_DATE_IDX_MILLISECOND])); + + /* This assert depends on the input parts representing time inside + * the Ecmascript range. + */ + DUK_ASSERT(t2 + DUK__WEEKDAY_MOD_ADDER >= 0); + parts[DUK_DATE_IDX_WEEKDAY] = (t2 + 4 + DUK__WEEKDAY_MOD_ADDER) % 7; /* E5.1 Section 15.9.1.6 */ + DUK_ASSERT(parts[DUK_DATE_IDX_WEEKDAY] >= 0 && parts[DUK_DATE_IDX_WEEKDAY] <= 6); + + year = duk__year_from_day(t2, &day_in_year); + day = day_in_year; + is_leap = duk_bi_date_is_leap_year(year); + for (month = 0; month < 12; month++) { + dim = duk__days_in_month[month]; + if (month == 1 && is_leap) { + dim++; + } + DUK_DDD(DUK_DDDPRINT("month=%ld, dim=%ld, day=%ld", + (long) month, (long) dim, (long) day)); + if (day < dim) { + break; + } + day -= dim; + } + DUK_DDD(DUK_DDDPRINT("final month=%ld", (long) month)); + DUK_ASSERT(month >= 0 && month <= 11); + DUK_ASSERT(day >= 0 && day <= 31); + + /* Equivalent year mapping, used to avoid DST trouble when platform + * may fail to provide reasonable DST answers for dates outside the + * ordinary range (e.g. 1970-2038). An equivalent year has the same + * leap-year-ness as the original year and begins on the same weekday + * (Jan 1). + * + * The year 2038 is avoided because there seem to be problems with it + * on some platforms. The year 1970 is also avoided as there were + * practical problems with it; an equivalent year is used for it too, + * which breaks some DST computations for 1970 right now, see e.g. + * test-bi-date-tzoffset-brute-fi.js. + */ + if ((flags & DUK_DATE_FLAG_EQUIVYEAR) && (year < 1971 || year > 2037)) { + DUK_ASSERT(is_leap == 0 || is_leap == 1); + + jan1_since_epoch = day_since_epoch - day_in_year; /* day number for Jan 1 since epoch */ + DUK_ASSERT(jan1_since_epoch + DUK__WEEKDAY_MOD_ADDER >= 0); + jan1_weekday = (jan1_since_epoch + 4 + DUK__WEEKDAY_MOD_ADDER) % 7; /* E5.1 Section 15.9.1.6 */ + DUK_ASSERT(jan1_weekday >= 0 && jan1_weekday <= 6); + arridx = jan1_weekday; + if (is_leap) { + arridx += 7; + } + DUK_ASSERT(arridx >= 0 && arridx < (duk_small_int_t) (sizeof(duk__date_equivyear) / sizeof(duk_uint8_t))); + + equiv_year = (duk_int_t) duk__date_equivyear[arridx] + 1970; + year = equiv_year; + DUK_DDD(DUK_DDDPRINT("equiv year mapping, year=%ld, day_in_year=%ld, day_since_epoch=%ld, " + "jan1_since_epoch=%ld, jan1_weekday=%ld -> equiv year %ld", + (long) year, (long) day_in_year, (long) day_since_epoch, + (long) jan1_since_epoch, (long) jan1_weekday, (long) equiv_year)); + } + + parts[DUK_DATE_IDX_YEAR] = year; + parts[DUK_DATE_IDX_MONTH] = month; + parts[DUK_DATE_IDX_DAY] = day; + + if (flags & DUK_DATE_FLAG_ONEBASED) { + parts[DUK_DATE_IDX_MONTH]++; /* zero-based -> one-based */ + parts[DUK_DATE_IDX_DAY]++; /* -""- */ + } + + if (dparts != NULL) { + for (i = 0; i < DUK_DATE_IDX_NUM_PARTS; i++) { + dparts[i] = (duk_double_t) parts[i]; + } + } +} + +/* Compute time value from (double) parts. The parts can be either UTC + * or local time; if local, they need to be (conceptually) converted into + * UTC time. The parts may represent valid or invalid time, and may be + * wildly out of range (but may cancel each other and still come out in + * the valid Date range). + */ +DUK_INTERNAL duk_double_t duk_bi_date_get_timeval_from_dparts(duk_double_t *dparts, duk_small_uint_t flags) { +#if defined(DUK_USE_PARANOID_DATE_COMPUTATION) + /* See comments below on MakeTime why these are volatile. */ + volatile duk_double_t tmp_time; + volatile duk_double_t tmp_day; + volatile duk_double_t d; +#else + duk_double_t tmp_time; + duk_double_t tmp_day; + duk_double_t d; +#endif + duk_small_uint_t i; + duk_int_t tzoff, tzoffprev1, tzoffprev2; + + /* Expects 'this' at top of stack on entry. */ + + /* Coerce all finite parts with ToInteger(). ToInteger() must not + * be called for NaN/Infinity because it will convert e.g. NaN to + * zero. If ToInteger() has already been called, this has no side + * effects and is idempotent. + * + * Don't read dparts[DUK_DATE_IDX_WEEKDAY]; it will cause Valgrind + * issues if the value is uninitialized. + */ + for (i = 0; i <= DUK_DATE_IDX_MILLISECOND; i++) { + /* SCANBUILD: scan-build complains here about assigned value + * being garbage or undefined. This is correct but operating + * on undefined values has no ill effect and is ignored by the + * caller in the case where this happens. + */ + d = dparts[i]; + if (DUK_ISFINITE(d)) { + dparts[i] = duk_js_tointeger_number(d); + } + } + + /* Use explicit steps in computation to try to ensure that + * computation happens with intermediate results coerced to + * double values (instead of using something more accurate). + * E.g. E5.1 Section 15.9.1.11 requires use of IEEE 754 + * rules (= Ecmascript '+' and '*' operators). + * + * Without 'volatile' even this approach fails on some platform + * and compiler combinations. For instance, gcc 4.8.1 on Ubuntu + * 64-bit, with -m32 and without -std=c99, test-bi-date-canceling.js + * would fail because of some optimizations when computing tmp_time + * (MakeTime below). Adding 'volatile' to tmp_time solved this + * particular problem (annoyingly, also adding debug prints or + * running the executable under valgrind hides it). + */ + + /* MakeTime */ + tmp_time = 0.0; + tmp_time += dparts[DUK_DATE_IDX_HOUR] * ((duk_double_t) DUK_DATE_MSEC_HOUR); + tmp_time += dparts[DUK_DATE_IDX_MINUTE] * ((duk_double_t) DUK_DATE_MSEC_MINUTE); + tmp_time += dparts[DUK_DATE_IDX_SECOND] * ((duk_double_t) DUK_DATE_MSEC_SECOND); + tmp_time += dparts[DUK_DATE_IDX_MILLISECOND]; + + /* MakeDay */ + tmp_day = duk__make_day(dparts[DUK_DATE_IDX_YEAR], dparts[DUK_DATE_IDX_MONTH], dparts[DUK_DATE_IDX_DAY]); + + /* MakeDate */ + d = tmp_day * ((duk_double_t) DUK_DATE_MSEC_DAY) + tmp_time; + + DUK_DDD(DUK_DDDPRINT("time=%lf day=%lf --> timeval=%lf", + (double) tmp_time, (double) tmp_day, (double) d)); + + /* Optional UTC conversion. */ + if (flags & DUK_DATE_FLAG_LOCALTIME) { + /* DUK_USE_DATE_GET_LOCAL_TZOFFSET() needs to be called with a + * time value computed from UTC parts. At this point we only + * have 'd' which is a time value computed from local parts, so + * it is off by the UTC-to-local time offset which we don't know + * yet. The current solution for computing the UTC-to-local + * time offset is to iterate a few times and detect a fixed + * point or a two-cycle loop (or a sanity iteration limit), + * see test-bi-date-local-parts.js and test-bi-date-tzoffset-basic-fi.js. + * + * E5.1 Section 15.9.1.9: + * UTC(t) = t - LocalTZA - DaylightSavingTA(t - LocalTZA) + * + * For NaN/inf, DUK_USE_DATE_GET_LOCAL_TZOFFSET() returns 0. + */ + +#if 0 + /* Old solution: don't iterate, incorrect */ + tzoff = DUK_USE_DATE_GET_LOCAL_TZOFFSET(d); + DUK_DDD(DUK_DDDPRINT("tzoffset w/o iteration, tzoff=%ld", (long) tzoff)); + d -= tzoff * 1000L; + DUK_UNREF(tzoffprev1); + DUK_UNREF(tzoffprev2); +#endif + + /* Iteration solution */ + tzoff = 0; + tzoffprev1 = 999999999L; /* invalid value which never matches */ + for (i = 0; i < DUK__LOCAL_TZOFFSET_MAXITER; i++) { + tzoffprev2 = tzoffprev1; + tzoffprev1 = tzoff; + tzoff = DUK_USE_DATE_GET_LOCAL_TZOFFSET(d - tzoff * 1000L); + DUK_DDD(DUK_DDDPRINT("tzoffset iteration, i=%d, tzoff=%ld, tzoffprev1=%ld tzoffprev2=%ld", + (int) i, (long) tzoff, (long) tzoffprev1, (long) tzoffprev2)); + if (tzoff == tzoffprev1) { + DUK_DDD(DUK_DDDPRINT("tzoffset iteration finished, i=%d, tzoff=%ld, tzoffprev1=%ld, tzoffprev2=%ld", + (int) i, (long) tzoff, (long) tzoffprev1, (long) tzoffprev2)); + break; + } else if (tzoff == tzoffprev2) { + /* Two value cycle, see e.g. test-bi-date-tzoffset-basic-fi.js. + * In these cases, favor a higher tzoffset to get a consistent + * result which is independent of iteration count. Not sure if + * this is a generically correct solution. + */ + DUK_DDD(DUK_DDDPRINT("tzoffset iteration two-value cycle, i=%d, tzoff=%ld, tzoffprev1=%ld, tzoffprev2=%ld", + (int) i, (long) tzoff, (long) tzoffprev1, (long) tzoffprev2)); + if (tzoffprev1 > tzoff) { + tzoff = tzoffprev1; + } + break; + } + } + DUK_DDD(DUK_DDDPRINT("tzoffset iteration, tzoff=%ld", (long) tzoff)); + d -= tzoff * 1000L; + } + + /* TimeClip(), which also handles Infinity -> NaN conversion */ + d = duk__timeclip(d); + + return d; +} + +/* + * API oriented helpers + */ + +/* Push 'this' binding, check that it is a Date object; then push the + * internal time value. At the end, stack is: [ ... this timeval ]. + * Returns the time value. Local time adjustment is done if requested. + */ +DUK_LOCAL duk_double_t duk__push_this_get_timeval_tzoffset(duk_context *ctx, duk_small_uint_t flags, duk_int_t *out_tzoffset) { + duk_hthread *thr = (duk_hthread *) ctx; + duk_hobject *h; + duk_double_t d; + duk_int_t tzoffset = 0; + + duk_push_this(ctx); + h = duk_get_hobject(ctx, -1); /* XXX: getter with class check, useful in built-ins */ + if (h == NULL || DUK_HOBJECT_GET_CLASS_NUMBER(h) != DUK_HOBJECT_CLASS_DATE) { + DUK_ERROR_TYPE(thr, "expected Date"); + } + + duk_get_prop_stridx(ctx, -1, DUK_STRIDX_INT_VALUE); + d = duk_to_number(ctx, -1); + duk_pop(ctx); + + if (DUK_ISNAN(d)) { + if (flags & DUK_DATE_FLAG_NAN_TO_ZERO) { + d = 0.0; + } + if (flags & DUK_DATE_FLAG_NAN_TO_RANGE_ERROR) { + DUK_ERROR_RANGE(thr, "Invalid Date"); + } + } + /* if no NaN handling flag, may still be NaN here, but not Inf */ + DUK_ASSERT(!DUK_ISINF(d)); + + if (flags & DUK_DATE_FLAG_LOCALTIME) { + /* Note: DST adjustment is determined using UTC time. + * If 'd' is NaN, tzoffset will be 0. + */ + tzoffset = DUK_USE_DATE_GET_LOCAL_TZOFFSET(d); /* seconds */ + d += tzoffset * 1000L; + } + if (out_tzoffset) { + *out_tzoffset = tzoffset; + } + + /* [ ... this ] */ + return d; +} + +DUK_LOCAL duk_double_t duk__push_this_get_timeval(duk_context *ctx, duk_small_uint_t flags) { + return duk__push_this_get_timeval_tzoffset(ctx, flags, NULL); +} + +/* Set timeval to 'this' from dparts, push the new time value onto the + * value stack and return 1 (caller can then tail call us). Expects + * the value stack to contain 'this' on the stack top. + */ +DUK_LOCAL duk_ret_t duk__set_this_timeval_from_dparts(duk_context *ctx, duk_double_t *dparts, duk_small_uint_t flags) { + duk_double_t d; + + /* [ ... this ] */ + + d = duk_bi_date_get_timeval_from_dparts(dparts, flags); + duk_push_number(ctx, d); /* -> [ ... this timeval_new ] */ + duk_dup_top(ctx); /* -> [ ... this timeval_new timeval_new ] */ + duk_put_prop_stridx(ctx, -3, DUK_STRIDX_INT_VALUE); + + /* stack top: new time value, return 1 to allow tail calls */ + return 1; +} + +/* 'out_buf' must be at least DUK_BI_DATE_ISO8601_BUFSIZE long. */ +DUK_LOCAL void duk__format_parts_iso8601(duk_int_t *parts, duk_int_t tzoffset, duk_small_uint_t flags, duk_uint8_t *out_buf) { + char yearstr[8]; /* "-123456\0" */ + char tzstr[8]; /* "+11:22\0" */ + char sep = (flags & DUK_DATE_FLAG_SEP_T) ? DUK_ASC_UC_T : DUK_ASC_SPACE; + + DUK_ASSERT(parts[DUK_DATE_IDX_MONTH] >= 1 && parts[DUK_DATE_IDX_MONTH] <= 12); + DUK_ASSERT(parts[DUK_DATE_IDX_DAY] >= 1 && parts[DUK_DATE_IDX_DAY] <= 31); + DUK_ASSERT(parts[DUK_DATE_IDX_YEAR] >= -999999 && parts[DUK_DATE_IDX_YEAR] <= 999999); + + /* Note: %06d for positive value, %07d for negative value to include + * sign and 6 digits. + */ + DUK_SNPRINTF(yearstr, + sizeof(yearstr), + (parts[DUK_DATE_IDX_YEAR] >= 0 && parts[DUK_DATE_IDX_YEAR] <= 9999) ? "%04ld" : + ((parts[DUK_DATE_IDX_YEAR] >= 0) ? "+%06ld" : "%07ld"), + (long) parts[DUK_DATE_IDX_YEAR]); + yearstr[sizeof(yearstr) - 1] = (char) 0; + + if (flags & DUK_DATE_FLAG_LOCALTIME) { + /* tzoffset seconds are dropped; 16 bits suffice for + * time offset in minutes + */ + if (tzoffset >= 0) { + duk_small_int_t tmp = tzoffset / 60; + DUK_SNPRINTF(tzstr, sizeof(tzstr), "+%02d:%02d", (int) (tmp / 60), (int) (tmp % 60)); + } else { + duk_small_int_t tmp = -tzoffset / 60; + DUK_SNPRINTF(tzstr, sizeof(tzstr), "-%02d:%02d", (int) (tmp / 60), (int) (tmp % 60)); + } + tzstr[sizeof(tzstr) - 1] = (char) 0; + } else { + tzstr[0] = DUK_ASC_UC_Z; + tzstr[1] = (char) 0; + } + + /* Unlike year, the other parts fit into 16 bits so %d format + * is portable. + */ + if ((flags & DUK_DATE_FLAG_TOSTRING_DATE) && (flags & DUK_DATE_FLAG_TOSTRING_TIME)) { + DUK_SPRINTF((char *) out_buf, "%s-%02d-%02d%c%02d:%02d:%02d.%03d%s", + (const char *) yearstr, (int) parts[DUK_DATE_IDX_MONTH], (int) parts[DUK_DATE_IDX_DAY], (int) sep, + (int) parts[DUK_DATE_IDX_HOUR], (int) parts[DUK_DATE_IDX_MINUTE], + (int) parts[DUK_DATE_IDX_SECOND], (int) parts[DUK_DATE_IDX_MILLISECOND], (const char *) tzstr); + } else if (flags & DUK_DATE_FLAG_TOSTRING_DATE) { + DUK_SPRINTF((char *) out_buf, "%s-%02d-%02d", + (const char *) yearstr, (int) parts[DUK_DATE_IDX_MONTH], (int) parts[DUK_DATE_IDX_DAY]); + } else { + DUK_ASSERT(flags & DUK_DATE_FLAG_TOSTRING_TIME); + DUK_SPRINTF((char *) out_buf, "%02d:%02d:%02d.%03d%s", + (int) parts[DUK_DATE_IDX_HOUR], (int) parts[DUK_DATE_IDX_MINUTE], + (int) parts[DUK_DATE_IDX_SECOND], (int) parts[DUK_DATE_IDX_MILLISECOND], + (const char *) tzstr); + } +} + +/* Helper for string conversion calls: check 'this' binding, get the + * internal time value, and format date and/or time in a few formats. + * Return value allows tail calls. + */ +DUK_LOCAL duk_ret_t duk__to_string_helper(duk_context *ctx, duk_small_uint_t flags) { + duk_double_t d; + duk_int_t parts[DUK_DATE_IDX_NUM_PARTS]; + duk_int_t tzoffset; /* seconds, doesn't fit into 16 bits */ + duk_bool_t rc; + duk_uint8_t buf[DUK_BI_DATE_ISO8601_BUFSIZE]; + + DUK_UNREF(rc); /* unreferenced with some options */ + + d = duk__push_this_get_timeval_tzoffset(ctx, flags, &tzoffset); + if (DUK_ISNAN(d)) { + duk_push_hstring_stridx(ctx, DUK_STRIDX_INVALID_DATE); + return 1; + } + DUK_ASSERT(DUK_ISFINITE(d)); + + /* formatters always get one-based month/day-of-month */ + duk_bi_date_timeval_to_parts(d, parts, NULL, DUK_DATE_FLAG_ONEBASED); + DUK_ASSERT(parts[DUK_DATE_IDX_MONTH] >= 1 && parts[DUK_DATE_IDX_MONTH] <= 12); + DUK_ASSERT(parts[DUK_DATE_IDX_DAY] >= 1 && parts[DUK_DATE_IDX_DAY] <= 31); + + if (flags & DUK_DATE_FLAG_TOSTRING_LOCALE) { + /* try locale specific formatter; if it refuses to format the + * string, fall back to an ISO 8601 formatted value in local + * time. + */ +#if defined(DUK_USE_DATE_FORMAT_STRING) + /* Contract, either: + * - Push string to value stack and return 1 + * - Don't push anything and return 0 + */ + + rc = DUK_USE_DATE_FORMAT_STRING(ctx, parts, tzoffset, flags); + if (rc != 0) { + return 1; + } +#else + /* No locale specific formatter; this is OK, we fall back + * to ISO 8601. + */ +#endif + } + + /* Different calling convention than above used because the helper + * is shared. + */ + duk__format_parts_iso8601(parts, tzoffset, flags, buf); + duk_push_string(ctx, (const char *) buf); + return 1; +} + +/* Helper for component getter calls: check 'this' binding, get the + * internal time value, split it into parts (either as UTC time or + * local time), push a specified component as a return value to the + * value stack and return 1 (caller can then tail call us). + */ +DUK_LOCAL duk_ret_t duk__get_part_helper(duk_context *ctx, duk_small_uint_t flags_and_idx) { + duk_double_t d; + duk_int_t parts[DUK_DATE_IDX_NUM_PARTS]; + duk_small_uint_t idx_part = (duk_small_uint_t) (flags_and_idx >> DUK_DATE_FLAG_VALUE_SHIFT); /* unpack args */ + + DUK_ASSERT_DISABLE(idx_part >= 0); /* unsigned */ + DUK_ASSERT(idx_part < DUK_DATE_IDX_NUM_PARTS); + + d = duk__push_this_get_timeval(ctx, flags_and_idx); + if (DUK_ISNAN(d)) { + duk_push_nan(ctx); + return 1; + } + DUK_ASSERT(DUK_ISFINITE(d)); + + duk_bi_date_timeval_to_parts(d, parts, NULL, flags_and_idx); /* no need to mask idx portion */ + + /* Setter APIs detect special year numbers (0...99) and apply a +1900 + * only in certain cases. The legacy getYear() getter applies -1900 + * unconditionally. + */ + duk_push_int(ctx, (flags_and_idx & DUK_DATE_FLAG_SUB1900) ? parts[idx_part] - 1900 : parts[idx_part]); + return 1; +} + +/* Helper for component setter calls: check 'this' binding, get the + * internal time value, split it into parts (either as UTC time or + * local time), modify one or more components as specified, recompute + * the time value, set it as the internal value. Finally, push the + * new time value as a return value to the value stack and return 1 + * (caller can then tail call us). + */ +DUK_LOCAL duk_ret_t duk__set_part_helper(duk_context *ctx, duk_small_uint_t flags_and_maxnargs) { + duk_double_t d; + duk_int_t parts[DUK_DATE_IDX_NUM_PARTS]; + duk_double_t dparts[DUK_DATE_IDX_NUM_PARTS]; + duk_idx_t nargs; + duk_small_uint_t maxnargs = (duk_small_uint_t) (flags_and_maxnargs >> DUK_DATE_FLAG_VALUE_SHIFT); /* unpack args */ + duk_small_uint_t idx_first, idx; + duk_small_uint_t i; + + nargs = duk_get_top(ctx); + d = duk__push_this_get_timeval(ctx, flags_and_maxnargs); + DUK_ASSERT(DUK_ISFINITE(d) || DUK_ISNAN(d)); + + if (DUK_ISFINITE(d)) { + duk_bi_date_timeval_to_parts(d, parts, dparts, flags_and_maxnargs); + } else { + /* NaN timevalue: we need to coerce the arguments, but + * the resulting internal timestamp needs to remain NaN. + * This works but is not pretty: parts and dparts will + * be partially uninitialized, but we only write to them. + */ + } + + /* + * Determining which datetime components to overwrite based on + * stack arguments is a bit complicated, but important to factor + * out from setters themselves for compactness. + * + * If DUK_DATE_FLAG_TIMESETTER, maxnargs indicates setter type: + * + * 1 -> millisecond + * 2 -> second, [millisecond] + * 3 -> minute, [second], [millisecond] + * 4 -> hour, [minute], [second], [millisecond] + * + * Else: + * + * 1 -> date + * 2 -> month, [date] + * 3 -> year, [month], [date] + * + * By comparing nargs and maxnargs (and flags) we know which + * components to override. We rely on part index ordering. + */ + + if (flags_and_maxnargs & DUK_DATE_FLAG_TIMESETTER) { + DUK_ASSERT(maxnargs >= 1 && maxnargs <= 4); + idx_first = DUK_DATE_IDX_MILLISECOND - (maxnargs - 1); + } else { + DUK_ASSERT(maxnargs >= 1 && maxnargs <= 3); + idx_first = DUK_DATE_IDX_DAY - (maxnargs - 1); + } + DUK_ASSERT_DISABLE(idx_first >= 0); /* unsigned */ + DUK_ASSERT(idx_first < DUK_DATE_IDX_NUM_PARTS); + + for (i = 0; i < maxnargs; i++) { + if ((duk_idx_t) i >= nargs) { + /* no argument given -> leave components untouched */ + break; + } + idx = idx_first + i; + DUK_ASSERT_DISABLE(idx >= 0); /* unsigned */ + DUK_ASSERT(idx < DUK_DATE_IDX_NUM_PARTS); + + if (idx == DUK_DATE_IDX_YEAR && (flags_and_maxnargs & DUK_DATE_FLAG_YEAR_FIXUP)) { + duk__twodigit_year_fixup(ctx, (duk_idx_t) i); + } + + dparts[idx] = duk_to_number(ctx, i); + + if (idx == DUK_DATE_IDX_DAY) { + /* Day-of-month is one-based in the API, but zero-based + * internally, so fix here. Note that month is zero-based + * both in the API and internally. + */ + /* SCANBUILD: complains about use of uninitialized values. + * The complaint is correct, but operating in undefined + * values here is intentional in some cases and the caller + * ignores the results. + */ + dparts[idx] -= 1.0; + } + } + + /* Leaves new timevalue on stack top and returns 1, which is correct + * for part setters. + */ + if (DUK_ISFINITE(d)) { + return duk__set_this_timeval_from_dparts(ctx, dparts, flags_and_maxnargs); + } else { + /* Internal timevalue is already NaN, so don't touch it. */ + duk_push_nan(ctx); + return 1; + } +} + +/* Apply ToNumber() to specified index; if ToInteger(val) in [0,99], add + * 1900 and replace value at idx_val. + */ +DUK_LOCAL void duk__twodigit_year_fixup(duk_context *ctx, duk_idx_t idx_val) { + duk_double_t d; + + /* XXX: idx_val would fit into 16 bits, but using duk_small_uint_t + * might not generate better code due to casting. + */ + + /* E5 Sections 15.9.3.1, B.2.4, B.2.5 */ + duk_to_number(ctx, idx_val); + if (duk_is_nan(ctx, idx_val)) { + return; + } + duk_dup(ctx, idx_val); + duk_to_int(ctx, -1); + d = duk_get_number(ctx, -1); /* get as double to handle huge numbers correctly */ + if (d >= 0.0 && d <= 99.0) { + d += 1900.0; + duk_push_number(ctx, d); + duk_replace(ctx, idx_val); + } + duk_pop(ctx); +} + +/* Set datetime parts from stack arguments, defaulting any missing values. + * Day-of-week is not set; it is not required when setting the time value. + */ +DUK_LOCAL void duk__set_parts_from_args(duk_context *ctx, duk_double_t *dparts, duk_idx_t nargs) { + duk_double_t d; + duk_small_uint_t i; + duk_small_uint_t idx; + + /* Causes a ToNumber() coercion, but doesn't break coercion order since + * year is coerced first anyway. + */ + duk__twodigit_year_fixup(ctx, 0); + + /* There are at most 7 args, but we use 8 here so that also + * DUK_DATE_IDX_WEEKDAY gets initialized (to zero) to avoid the potential + * for any Valgrind gripes later. + */ + for (i = 0; i < 8; i++) { + /* Note: rely on index ordering */ + idx = DUK_DATE_IDX_YEAR + i; + if ((duk_idx_t) i < nargs) { + d = duk_to_number(ctx, (duk_idx_t) i); + if (idx == DUK_DATE_IDX_DAY) { + /* Convert day from one-based to zero-based (internal). This may + * cause the day part to be negative, which is OK. + */ + d -= 1.0; + } + } else { + /* All components default to 0 except day-of-month which defaults + * to 1. However, because our internal day-of-month is zero-based, + * it also defaults to zero here. + */ + d = 0.0; + } + dparts[idx] = d; + } + + DUK_DDD(DUK_DDDPRINT("parts from args -> %lf %lf %lf %lf %lf %lf %lf %lf", + (double) dparts[0], (double) dparts[1], + (double) dparts[2], (double) dparts[3], + (double) dparts[4], (double) dparts[5], + (double) dparts[6], (double) dparts[7])); +} + +/* + * Helper to format a time value into caller buffer, used by logging. + * 'out_buf' must be at least DUK_BI_DATE_ISO8601_BUFSIZE long. + */ + +DUK_INTERNAL void duk_bi_date_format_timeval(duk_double_t timeval, duk_uint8_t *out_buf) { + duk_int_t parts[DUK_DATE_IDX_NUM_PARTS]; + + duk_bi_date_timeval_to_parts(timeval, + parts, + NULL, + DUK_DATE_FLAG_ONEBASED); + + duk__format_parts_iso8601(parts, + 0 /*tzoffset*/, + DUK_DATE_FLAG_TOSTRING_DATE | + DUK_DATE_FLAG_TOSTRING_TIME | + DUK_DATE_FLAG_SEP_T /*flags*/, + out_buf); +} + +/* + * Indirect magic value lookup for Date methods. + * + * Date methods don't put their control flags into the function magic value + * because they wouldn't fit into a LIGHTFUNC's magic field. Instead, the + * magic value is set to an index pointing to the array of control flags + * below. + * + * This must be kept in strict sync with genbuiltins.py! + */ + +static duk_uint16_t duk__date_magics[] = { + /* 0: toString */ + DUK_DATE_FLAG_TOSTRING_DATE + DUK_DATE_FLAG_TOSTRING_TIME + DUK_DATE_FLAG_LOCALTIME, + + /* 1: toDateString */ + DUK_DATE_FLAG_TOSTRING_DATE + DUK_DATE_FLAG_LOCALTIME, + + /* 2: toTimeString */ + DUK_DATE_FLAG_TOSTRING_TIME + DUK_DATE_FLAG_LOCALTIME, + + /* 3: toLocaleString */ + DUK_DATE_FLAG_TOSTRING_DATE + DUK_DATE_FLAG_TOSTRING_TIME + DUK_DATE_FLAG_TOSTRING_LOCALE + DUK_DATE_FLAG_LOCALTIME, + + /* 4: toLocaleDateString */ + DUK_DATE_FLAG_TOSTRING_DATE + DUK_DATE_FLAG_TOSTRING_LOCALE + DUK_DATE_FLAG_LOCALTIME, + + /* 5: toLocaleTimeString */ + DUK_DATE_FLAG_TOSTRING_TIME + DUK_DATE_FLAG_TOSTRING_LOCALE + DUK_DATE_FLAG_LOCALTIME, + + /* 6: toUTCString */ + DUK_DATE_FLAG_TOSTRING_DATE + DUK_DATE_FLAG_TOSTRING_TIME, + + /* 7: toISOString */ + DUK_DATE_FLAG_TOSTRING_DATE + DUK_DATE_FLAG_TOSTRING_TIME + DUK_DATE_FLAG_NAN_TO_RANGE_ERROR + DUK_DATE_FLAG_SEP_T, + + /* 8: getFullYear */ + DUK_DATE_FLAG_LOCALTIME + (DUK_DATE_IDX_YEAR << DUK_DATE_FLAG_VALUE_SHIFT), + + /* 9: getUTCFullYear */ + 0 + (DUK_DATE_IDX_YEAR << DUK_DATE_FLAG_VALUE_SHIFT), + + /* 10: getMonth */ + DUK_DATE_FLAG_LOCALTIME + (DUK_DATE_IDX_MONTH << DUK_DATE_FLAG_VALUE_SHIFT), + + /* 11: getUTCMonth */ + 0 + (DUK_DATE_IDX_MONTH << DUK_DATE_FLAG_VALUE_SHIFT), + + /* 12: getDate */ + DUK_DATE_FLAG_ONEBASED + DUK_DATE_FLAG_LOCALTIME + (DUK_DATE_IDX_DAY << DUK_DATE_FLAG_VALUE_SHIFT), + + /* 13: getUTCDate */ + DUK_DATE_FLAG_ONEBASED + (DUK_DATE_IDX_DAY << DUK_DATE_FLAG_VALUE_SHIFT), + + /* 14: getDay */ + DUK_DATE_FLAG_LOCALTIME + (DUK_DATE_IDX_WEEKDAY << DUK_DATE_FLAG_VALUE_SHIFT), + + /* 15: getUTCDay */ + 0 + (DUK_DATE_IDX_WEEKDAY << DUK_DATE_FLAG_VALUE_SHIFT), + + /* 16: getHours */ + DUK_DATE_FLAG_LOCALTIME + (DUK_DATE_IDX_HOUR << DUK_DATE_FLAG_VALUE_SHIFT), + + /* 17: getUTCHours */ + 0 + (DUK_DATE_IDX_HOUR << DUK_DATE_FLAG_VALUE_SHIFT), + + /* 18: getMinutes */ + DUK_DATE_FLAG_LOCALTIME + (DUK_DATE_IDX_MINUTE << DUK_DATE_FLAG_VALUE_SHIFT), + + /* 19: getUTCMinutes */ + 0 + (DUK_DATE_IDX_MINUTE << DUK_DATE_FLAG_VALUE_SHIFT), + + /* 20: getSeconds */ + DUK_DATE_FLAG_LOCALTIME + (DUK_DATE_IDX_SECOND << DUK_DATE_FLAG_VALUE_SHIFT), + + /* 21: getUTCSeconds */ + 0 + (DUK_DATE_IDX_SECOND << DUK_DATE_FLAG_VALUE_SHIFT), + + /* 22: getMilliseconds */ + DUK_DATE_FLAG_LOCALTIME + (DUK_DATE_IDX_MILLISECOND << DUK_DATE_FLAG_VALUE_SHIFT), + + /* 23: getUTCMilliseconds */ + 0 + (DUK_DATE_IDX_MILLISECOND << DUK_DATE_FLAG_VALUE_SHIFT), + + /* 24: setMilliseconds */ + DUK_DATE_FLAG_TIMESETTER + DUK_DATE_FLAG_LOCALTIME + (1 << DUK_DATE_FLAG_VALUE_SHIFT), + + /* 25: setUTCMilliseconds */ + DUK_DATE_FLAG_TIMESETTER + (1 << DUK_DATE_FLAG_VALUE_SHIFT), + + /* 26: setSeconds */ + DUK_DATE_FLAG_TIMESETTER + DUK_DATE_FLAG_LOCALTIME + (2 << DUK_DATE_FLAG_VALUE_SHIFT), + + /* 27: setUTCSeconds */ + DUK_DATE_FLAG_TIMESETTER + (2 << DUK_DATE_FLAG_VALUE_SHIFT), + + /* 28: setMinutes */ + DUK_DATE_FLAG_TIMESETTER + DUK_DATE_FLAG_LOCALTIME + (3 << DUK_DATE_FLAG_VALUE_SHIFT), + + /* 29: setUTCMinutes */ + DUK_DATE_FLAG_TIMESETTER + (3 << DUK_DATE_FLAG_VALUE_SHIFT), + + /* 30: setHours */ + DUK_DATE_FLAG_TIMESETTER + DUK_DATE_FLAG_LOCALTIME + (4 << DUK_DATE_FLAG_VALUE_SHIFT), + + /* 31: setUTCHours */ + DUK_DATE_FLAG_TIMESETTER + (4 << DUK_DATE_FLAG_VALUE_SHIFT), + + /* 32: setDate */ + DUK_DATE_FLAG_LOCALTIME + (1 << DUK_DATE_FLAG_VALUE_SHIFT), + + /* 33: setUTCDate */ + 0 + (1 << DUK_DATE_FLAG_VALUE_SHIFT), + + /* 34: setMonth */ + DUK_DATE_FLAG_LOCALTIME + (2 << DUK_DATE_FLAG_VALUE_SHIFT), + + /* 35: setUTCMonth */ + 0 + (2 << DUK_DATE_FLAG_VALUE_SHIFT), + + /* 36: setFullYear */ + DUK_DATE_FLAG_NAN_TO_ZERO + DUK_DATE_FLAG_LOCALTIME + (3 << DUK_DATE_FLAG_VALUE_SHIFT), + + /* 37: setUTCFullYear */ + DUK_DATE_FLAG_NAN_TO_ZERO + (3 << DUK_DATE_FLAG_VALUE_SHIFT), + + /* 38: getYear */ + DUK_DATE_FLAG_LOCALTIME + DUK_DATE_FLAG_SUB1900 + (DUK_DATE_IDX_YEAR << DUK_DATE_FLAG_VALUE_SHIFT), + + /* 39: setYear */ + DUK_DATE_FLAG_NAN_TO_ZERO + DUK_DATE_FLAG_YEAR_FIXUP + (3 << DUK_DATE_FLAG_VALUE_SHIFT), +}; + +DUK_LOCAL duk_small_uint_t duk__date_get_indirect_magic(duk_context *ctx) { + duk_small_int_t magicidx = (duk_small_uint_t) duk_get_current_magic(ctx); + DUK_ASSERT(magicidx >= 0 && magicidx < (duk_small_int_t) (sizeof(duk__date_magics) / sizeof(duk_uint16_t))); + return (duk_small_uint_t) duk__date_magics[magicidx]; +} + +/* + * Constructor calls + */ + +DUK_INTERNAL duk_ret_t duk_bi_date_constructor(duk_context *ctx) { + duk_idx_t nargs = duk_get_top(ctx); + duk_bool_t is_cons = duk_is_constructor_call(ctx); + duk_double_t dparts[DUK_DATE_IDX_NUM_PARTS]; + duk_double_t d; + + DUK_DDD(DUK_DDDPRINT("Date constructor, nargs=%ld, is_cons=%ld", (long) nargs, (long) is_cons)); + + duk_push_object_helper(ctx, + DUK_HOBJECT_FLAG_EXTENSIBLE | + DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_DATE), + DUK_BIDX_DATE_PROTOTYPE); + + /* Unlike most built-ins, the internal [[PrimitiveValue]] of a Date + * is mutable. + */ + + if (nargs == 0 || !is_cons) { + d = duk__timeclip(DUK_USE_DATE_GET_NOW(ctx)); + duk_push_number(ctx, d); + duk_xdef_prop_stridx(ctx, -2, DUK_STRIDX_INT_VALUE, DUK_PROPDESC_FLAGS_W); + if (!is_cons) { + /* called as a normal function: return new Date().toString() */ + duk_to_string(ctx, -1); + } + return 1; + } else if (nargs == 1) { + duk_to_primitive(ctx, 0, DUK_HINT_NONE); + if (duk_is_string(ctx, 0)) { + duk__parse_string(ctx, duk_to_string(ctx, 0)); + duk_replace(ctx, 0); /* may be NaN */ + } + d = duk__timeclip(duk_to_number(ctx, 0)); + duk_push_number(ctx, d); + duk_xdef_prop_stridx(ctx, -2, DUK_STRIDX_INT_VALUE, DUK_PROPDESC_FLAGS_W); + return 1; + } + + duk__set_parts_from_args(ctx, dparts, nargs); + + /* Parts are in local time, convert when setting. */ + + (void) duk__set_this_timeval_from_dparts(ctx, dparts, DUK_DATE_FLAG_LOCALTIME /*flags*/); /* -> [ ... this timeval ] */ + duk_pop(ctx); /* -> [ ... this ] */ + return 1; +} + +DUK_INTERNAL duk_ret_t duk_bi_date_constructor_parse(duk_context *ctx) { + return duk__parse_string(ctx, duk_to_string(ctx, 0)); +} + +DUK_INTERNAL duk_ret_t duk_bi_date_constructor_utc(duk_context *ctx) { + duk_idx_t nargs = duk_get_top(ctx); + duk_double_t dparts[DUK_DATE_IDX_NUM_PARTS]; + duk_double_t d; + + /* Behavior for nargs < 2 is implementation dependent: currently we'll + * set a NaN time value (matching V8 behavior) in this case. + */ + + if (nargs < 2) { + duk_push_nan(ctx); + } else { + duk__set_parts_from_args(ctx, dparts, nargs); + d = duk_bi_date_get_timeval_from_dparts(dparts, 0 /*flags*/); + duk_push_number(ctx, d); + } + return 1; +} + +DUK_INTERNAL duk_ret_t duk_bi_date_constructor_now(duk_context *ctx) { + duk_double_t d; + + d = DUK_USE_DATE_GET_NOW(ctx); + DUK_ASSERT(duk__timeclip(d) == d); /* TimeClip() should never be necessary */ + duk_push_number(ctx, d); + return 1; +} + +/* + * String/JSON conversions + * + * Human readable conversions are now basically ISO 8601 with a space + * (instead of 'T') as the date/time separator. This is a good baseline + * and is platform independent. + * + * A shared native helper to provide many conversions. Magic value contains + * a set of flags. The helper provides: + * + * toString() + * toDateString() + * toTimeString() + * toLocaleString() + * toLocaleDateString() + * toLocaleTimeString() + * toUTCString() + * toISOString() + * + * Notes: + * + * - Date.prototype.toGMTString() and Date.prototype.toUTCString() are + * required to be the same Ecmascript function object (!), so it is + * omitted from here. + * + * - Date.prototype.toUTCString(): E5.1 specification does not require a + * specific format, but result should be human readable. The + * specification suggests using ISO 8601 format with a space (instead + * of 'T') separator if a more human readable format is not available. + * + * - Date.prototype.toISOString(): unlike other conversion functions, + * toISOString() requires a RangeError for invalid date values. + */ + +DUK_INTERNAL duk_ret_t duk_bi_date_prototype_tostring_shared(duk_context *ctx) { + duk_small_uint_t flags = duk__date_get_indirect_magic(ctx); + return duk__to_string_helper(ctx, flags); +} + +DUK_INTERNAL duk_ret_t duk_bi_date_prototype_value_of(duk_context *ctx) { + /* This native function is also used for Date.prototype.getTime() + * as their behavior is identical. + */ + + duk_double_t d = duk__push_this_get_timeval(ctx, 0 /*flags*/); /* -> [ this ] */ + DUK_ASSERT(DUK_ISFINITE(d) || DUK_ISNAN(d)); + duk_push_number(ctx, d); + return 1; +} + +DUK_INTERNAL duk_ret_t duk_bi_date_prototype_to_json(duk_context *ctx) { + /* Note: toJSON() is a generic function which works even if 'this' + * is not a Date. The sole argument is ignored. + */ + + duk_push_this(ctx); + duk_to_object(ctx, -1); + + duk_dup_top(ctx); + duk_to_primitive(ctx, -1, DUK_HINT_NUMBER); + if (duk_is_number(ctx, -1)) { + duk_double_t d = duk_get_number(ctx, -1); + if (!DUK_ISFINITE(d)) { + duk_push_null(ctx); + return 1; + } + } + duk_pop(ctx); + + duk_get_prop_stridx(ctx, -1, DUK_STRIDX_TO_ISO_STRING); + duk_dup(ctx, -2); /* -> [ O toIsoString O ] */ + duk_call_method(ctx, 0); + return 1; +} + +/* + * Getters. + * + * Implementing getters is quite easy. The internal time value is either + * NaN, or represents milliseconds (without fractions) from Jan 1, 1970. + * The internal time value can be converted to integer parts, and each + * part will be normalized and will fit into a 32-bit signed integer. + * + * A shared native helper to provide all getters. Magic value contains + * a set of flags and also packs the date component index argument. The + * helper provides: + * + * getFullYear() + * getUTCFullYear() + * getMonth() + * getUTCMonth() + * getDate() + * getUTCDate() + * getDay() + * getUTCDay() + * getHours() + * getUTCHours() + * getMinutes() + * getUTCMinutes() + * getSeconds() + * getUTCSeconds() + * getMilliseconds() + * getUTCMilliseconds() + * getYear() + * + * Notes: + * + * - Date.prototype.getDate(): 'date' means day-of-month, and is + * zero-based in internal calculations but public API expects it to + * be one-based. + * + * - Date.prototype.getTime() and Date.prototype.valueOf() have identical + * behavior. They have separate function objects, but share the same C + * function (duk_bi_date_prototype_value_of). + */ + +DUK_INTERNAL duk_ret_t duk_bi_date_prototype_get_shared(duk_context *ctx) { + duk_small_uint_t flags_and_idx = duk__date_get_indirect_magic(ctx); + return duk__get_part_helper(ctx, flags_and_idx); +} + +DUK_INTERNAL duk_ret_t duk_bi_date_prototype_get_timezone_offset(duk_context *ctx) { + /* + * Return (t - LocalTime(t)) in minutes: + * + * t - LocalTime(t) = t - (t + LocalTZA + DaylightSavingTA(t)) + * = -(LocalTZA + DaylightSavingTA(t)) + * + * where DaylightSavingTA() is checked for time 't'. + * + * Note that the sign of the result is opposite to common usage, + * e.g. for EE(S)T which normally is +2h or +3h from UTC, this + * function returns -120 or -180. + * + */ + + duk_double_t d; + duk_int_t tzoffset; + + /* Note: DST adjustment is determined using UTC time. */ + d = duk__push_this_get_timeval(ctx, 0 /*flags*/); + DUK_ASSERT(DUK_ISFINITE(d) || DUK_ISNAN(d)); + if (DUK_ISNAN(d)) { + duk_push_nan(ctx); + } else { + DUK_ASSERT(DUK_ISFINITE(d)); + tzoffset = DUK_USE_DATE_GET_LOCAL_TZOFFSET(d); + duk_push_int(ctx, -tzoffset / 60); + } + return 1; +} + +/* + * Setters. + * + * Setters are a bit more complicated than getters. Component setters + * break down the current time value into its (normalized) component + * parts, replace one or more components with -unnormalized- new values, + * and the components are then converted back into a time value. As an + * example of using unnormalized values: + * + * var d = new Date(1234567890); + * + * is equivalent to: + * + * var d = new Date(0); + * d.setUTCMilliseconds(1234567890); + * + * A shared native helper to provide almost all setters. Magic value + * contains a set of flags and also packs the "maxnargs" argument. The + * helper provides: + * + * setMilliseconds() + * setUTCMilliseconds() + * setSeconds() + * setUTCSeconds() + * setMinutes() + * setUTCMinutes() + * setHours() + * setUTCHours() + * setDate() + * setUTCDate() + * setMonth() + * setUTCMonth() + * setFullYear() + * setUTCFullYear() + * setYear() + * + * Notes: + * + * - Date.prototype.setYear() (Section B addition): special year check + * is omitted. NaN / Infinity will just flow through and ultimately + * result in a NaN internal time value. + * + * - Date.prototype.setYear() does not have optional arguments for + * setting month and day-in-month (like setFullYear()), but we indicate + * 'maxnargs' to be 3 to get the year written to the correct component + * index in duk__set_part_helper(). The function has nargs == 1, so only + * the year will be set regardless of actual argument count. + */ + +DUK_INTERNAL duk_ret_t duk_bi_date_prototype_set_shared(duk_context *ctx) { + duk_small_uint_t flags_and_maxnargs = duk__date_get_indirect_magic(ctx); + return duk__set_part_helper(ctx, flags_and_maxnargs); +} + +DUK_INTERNAL duk_ret_t duk_bi_date_prototype_set_time(duk_context *ctx) { + duk_double_t d; + + (void) duk__push_this_get_timeval(ctx, 0 /*flags*/); /* -> [ timeval this ] */ + d = duk__timeclip(duk_to_number(ctx, 0)); + duk_push_number(ctx, d); + duk_dup_top(ctx); + duk_put_prop_stridx(ctx, -3, DUK_STRIDX_INT_VALUE); /* -> [ timeval this timeval ] */ + + return 1; +}
http://git-wip-us.apache.org/repos/asf/nifi-minifi-cpp/blob/df353561/thirdparty/civetweb-1.10/src/third_party/duktape-1.5.2/src-separate/duk_bi_date_unix.c ---------------------------------------------------------------------- diff --git a/thirdparty/civetweb-1.10/src/third_party/duktape-1.5.2/src-separate/duk_bi_date_unix.c b/thirdparty/civetweb-1.10/src/third_party/duktape-1.5.2/src-separate/duk_bi_date_unix.c new file mode 100644 index 0000000..e1e7c42 --- /dev/null +++ b/thirdparty/civetweb-1.10/src/third_party/duktape-1.5.2/src-separate/duk_bi_date_unix.c @@ -0,0 +1,309 @@ +/* + * Unix-like Date providers + * + * Generally useful Unix / POSIX / ANSI Date providers. + */ + +#include "duk_internal.h" + +/* The necessary #includes are in place in duk_config.h. */ + +/* Buffer sizes for some UNIX calls. Larger than strictly necessary + * to avoid Valgrind errors. + */ +#define DUK__STRPTIME_BUF_SIZE 64 +#define DUK__STRFTIME_BUF_SIZE 64 + +#if defined(DUK_USE_DATE_NOW_GETTIMEOFDAY) +/* Get current Ecmascript time (= UNIX/Posix time, but in milliseconds). */ +DUK_INTERNAL duk_double_t duk_bi_date_get_now_gettimeofday(duk_context *ctx) { + duk_hthread *thr = (duk_hthread *) ctx; + struct timeval tv; + duk_double_t d; + + if (gettimeofday(&tv, NULL) != 0) { + DUK_ERROR_INTERNAL_DEFMSG(thr); + } + + d = ((duk_double_t) tv.tv_sec) * 1000.0 + + ((duk_double_t) (tv.tv_usec / 1000)); + DUK_ASSERT(DUK_FLOOR(d) == d); /* no fractions */ + + return d; +} +#endif /* DUK_USE_DATE_NOW_GETTIMEOFDAY */ + +#if defined(DUK_USE_DATE_NOW_TIME) +/* Not a very good provider: only full seconds are available. */ +DUK_INTERNAL duk_double_t duk_bi_date_get_now_time(duk_context *ctx) { + time_t t; + + DUK_UNREF(ctx); + t = time(NULL); + return ((duk_double_t) t) * 1000.0; +} +#endif /* DUK_USE_DATE_NOW_TIME */ + +#if defined(DUK_USE_DATE_TZO_GMTIME) || defined(DUK_USE_DATE_TZO_GMTIME_R) +/* Get local time offset (in seconds) for a certain (UTC) instant 'd'. */ +DUK_INTERNAL duk_int_t duk_bi_date_get_local_tzoffset_gmtime(duk_double_t d) { + time_t t, t1, t2; + duk_int_t parts[DUK_DATE_IDX_NUM_PARTS]; + duk_double_t dparts[DUK_DATE_IDX_NUM_PARTS]; + struct tm tms[2]; +#ifdef DUK_USE_DATE_TZO_GMTIME + struct tm *tm_ptr; +#endif + + /* For NaN/inf, the return value doesn't matter. */ + if (!DUK_ISFINITE(d)) { + return 0; + } + + /* If not within Ecmascript range, some integer time calculations + * won't work correctly (and some asserts will fail), so bail out + * if so. This fixes test-bug-date-insane-setyear.js. There is + * a +/- 24h leeway in this range check to avoid a test262 corner + * case documented in test-bug-date-timeval-edges.js. + */ + if (!duk_bi_date_timeval_in_leeway_range(d)) { + DUK_DD(DUK_DDPRINT("timeval not within valid range, skip tzoffset computation to avoid integer overflows")); + return 0; + } + + /* + * This is a bit tricky to implement portably. The result depends + * on the timestamp (specifically, DST depends on the timestamp). + * If e.g. UNIX APIs are used, they'll have portability issues with + * very small and very large years. + * + * Current approach: + * + * - Stay within portable UNIX limits by using equivalent year mapping. + * Avoid year 1970 and 2038 as some conversions start to fail, at + * least on some platforms. Avoiding 1970 means that there are + * currently DST discrepancies for 1970. + * + * - Create a UTC and local time breakdowns from 't'. Then create + * a time_t using gmtime() and localtime() and compute the time + * difference between the two. + * + * Equivalent year mapping (E5 Section 15.9.1.8): + * + * If the host environment provides functionality for determining + * daylight saving time, the implementation of ECMAScript is free + * to map the year in question to an equivalent year (same + * leap-year-ness and same starting week day for the year) for which + * the host environment provides daylight saving time information. + * The only restriction is that all equivalent years should produce + * the same result. + * + * This approach is quite reasonable but not entirely correct, e.g. + * the specification also states (E5 Section 15.9.1.8): + * + * The implementation of ECMAScript should not try to determine + * whether the exact time was subject to daylight saving time, but + * just whether daylight saving time would have been in effect if + * the _current daylight saving time algorithm_ had been used at the + * time. This avoids complications such as taking into account the + * years that the locale observed daylight saving time year round. + * + * Since we rely on the platform APIs for conversions between local + * time and UTC, we can't guarantee the above. Rather, if the platform + * has historical DST rules they will be applied. This seems to be the + * general preferred direction in Ecmascript standardization (or at least + * implementations) anyway, and even the equivalent year mapping should + * be disabled if the platform is known to handle DST properly for the + * full Ecmascript range. + * + * The following has useful discussion and links: + * + * https://bugzilla.mozilla.org/show_bug.cgi?id=351066 + */ + + duk_bi_date_timeval_to_parts(d, parts, dparts, DUK_DATE_FLAG_EQUIVYEAR /*flags*/); + DUK_ASSERT(parts[DUK_DATE_IDX_YEAR] >= 1970 && parts[DUK_DATE_IDX_YEAR] <= 2038); + + d = duk_bi_date_get_timeval_from_dparts(dparts, 0 /*flags*/); + DUK_ASSERT(d >= 0 && d < 2147483648.0 * 1000.0); /* unsigned 31-bit range */ + t = (time_t) (d / 1000.0); + DUK_DDD(DUK_DDDPRINT("timeval: %lf -> time_t %ld", (double) d, (long) t)); + + DUK_MEMZERO((void *) tms, sizeof(struct tm) * 2); + +#if defined(DUK_USE_DATE_TZO_GMTIME_R) + (void) gmtime_r(&t, &tms[0]); + (void) localtime_r(&t, &tms[1]); +#elif defined(DUK_USE_DATE_TZO_GMTIME) + tm_ptr = gmtime(&t); + DUK_MEMCPY((void *) &tms[0], tm_ptr, sizeof(struct tm)); + tm_ptr = localtime(&t); + DUK_MEMCPY((void *) &tms[1], tm_ptr, sizeof(struct tm)); +#else +#error internal error +#endif + DUK_DDD(DUK_DDDPRINT("gmtime result: tm={sec:%ld,min:%ld,hour:%ld,mday:%ld,mon:%ld,year:%ld," + "wday:%ld,yday:%ld,isdst:%ld}", + (long) tms[0].tm_sec, (long) tms[0].tm_min, (long) tms[0].tm_hour, + (long) tms[0].tm_mday, (long) tms[0].tm_mon, (long) tms[0].tm_year, + (long) tms[0].tm_wday, (long) tms[0].tm_yday, (long) tms[0].tm_isdst)); + DUK_DDD(DUK_DDDPRINT("localtime result: tm={sec:%ld,min:%ld,hour:%ld,mday:%ld,mon:%ld,year:%ld," + "wday:%ld,yday:%ld,isdst:%ld}", + (long) tms[1].tm_sec, (long) tms[1].tm_min, (long) tms[1].tm_hour, + (long) tms[1].tm_mday, (long) tms[1].tm_mon, (long) tms[1].tm_year, + (long) tms[1].tm_wday, (long) tms[1].tm_yday, (long) tms[1].tm_isdst)); + + /* tm_isdst is both an input and an output to mktime(), use 0 to + * avoid DST handling in mktime(): + * - https://github.com/svaarala/duktape/issues/406 + * - http://stackoverflow.com/questions/8558919/mktime-and-tm-isdst + */ + tms[0].tm_isdst = 0; + tms[1].tm_isdst = 0; + t1 = mktime(&tms[0]); /* UTC */ + t2 = mktime(&tms[1]); /* local */ + if (t1 == (time_t) -1 || t2 == (time_t) -1) { + /* This check used to be for (t < 0) but on some platforms + * time_t is unsigned and apparently the proper way to detect + * an mktime() error return is the cast above. See e.g.: + * http://pubs.opengroup.org/onlinepubs/009695299/functions/mktime.html + */ + goto error; + } + DUK_DDD(DUK_DDDPRINT("t1=%ld (utc), t2=%ld (local)", (long) t1, (long) t2)); + + /* Compute final offset in seconds, positive if local time ahead of + * UTC (returned value is UTC-to-local offset). + * + * difftime() returns a double, so coercion to int generates quite + * a lot of code. Direct subtraction is not portable, however. + * XXX: allow direct subtraction on known platforms. + */ +#if 0 + return (duk_int_t) (t2 - t1); +#endif + return (duk_int_t) difftime(t2, t1); + + error: + /* XXX: return something more useful, so that caller can throw? */ + DUK_D(DUK_DPRINT("mktime() failed, d=%lf", (double) d)); + return 0; +} +#endif /* DUK_USE_DATE_TZO_GMTIME */ + +#if defined(DUK_USE_DATE_PRS_STRPTIME) +DUK_INTERNAL duk_bool_t duk_bi_date_parse_string_strptime(duk_context *ctx, const char *str) { + struct tm tm; + time_t t; + char buf[DUK__STRPTIME_BUF_SIZE]; + + /* copy to buffer with spare to avoid Valgrind gripes from strptime */ + DUK_ASSERT(str != NULL); + DUK_MEMZERO(buf, sizeof(buf)); /* valgrind whine without this */ + DUK_SNPRINTF(buf, sizeof(buf), "%s", (const char *) str); + buf[sizeof(buf) - 1] = (char) 0; + + DUK_DDD(DUK_DDDPRINT("parsing: '%s'", (const char *) buf)); + + DUK_MEMZERO(&tm, sizeof(tm)); + if (strptime((const char *) buf, "%c", &tm) != NULL) { + DUK_DDD(DUK_DDDPRINT("before mktime: tm={sec:%ld,min:%ld,hour:%ld,mday:%ld,mon:%ld,year:%ld," + "wday:%ld,yday:%ld,isdst:%ld}", + (long) tm.tm_sec, (long) tm.tm_min, (long) tm.tm_hour, + (long) tm.tm_mday, (long) tm.tm_mon, (long) tm.tm_year, + (long) tm.tm_wday, (long) tm.tm_yday, (long) tm.tm_isdst)); + tm.tm_isdst = -1; /* negative: dst info not available */ + + t = mktime(&tm); + DUK_DDD(DUK_DDDPRINT("mktime() -> %ld", (long) t)); + if (t >= 0) { + duk_push_number(ctx, ((duk_double_t) t) * 1000.0); + return 1; + } + } + + return 0; +} +#endif /* DUK_USE_DATE_PRS_STRPTIME */ + +#if defined(DUK_USE_DATE_PRS_GETDATE) +DUK_INTERNAL duk_bool_t duk_bi_date_parse_string_getdate(duk_context *ctx, const char *str) { + struct tm tm; + duk_small_int_t rc; + time_t t; + + /* For this to work, DATEMSK must be set, so this is not very + * convenient for an embeddable interpreter. + */ + + DUK_MEMZERO(&tm, sizeof(struct tm)); + rc = (duk_small_int_t) getdate_r(str, &tm); + DUK_DDD(DUK_DDDPRINT("getdate_r() -> %ld", (long) rc)); + + if (rc == 0) { + t = mktime(&tm); + DUK_DDD(DUK_DDDPRINT("mktime() -> %ld", (long) t)); + if (t >= 0) { + duk_push_number(ctx, (duk_double_t) t); + return 1; + } + } + + return 0; +} +#endif /* DUK_USE_DATE_PRS_GETDATE */ + +#if defined(DUK_USE_DATE_FMT_STRFTIME) +DUK_INTERNAL duk_bool_t duk_bi_date_format_parts_strftime(duk_context *ctx, duk_int_t *parts, duk_int_t tzoffset, duk_small_uint_t flags) { + char buf[DUK__STRFTIME_BUF_SIZE]; + struct tm tm; + const char *fmt; + + DUK_UNREF(tzoffset); + + /* If the platform doesn't support the entire Ecmascript range, we need + * to return 0 so that the caller can fall back to the default formatter. + * + * For now, assume that if time_t is 8 bytes or more, the whole Ecmascript + * range is supported. For smaller time_t values (4 bytes in practice), + * assumes that the signed 32-bit range is supported. + * + * XXX: detect this more correctly per platform. The size of time_t is + * probably not an accurate guarantee of strftime() supporting or not + * supporting a large time range (the full Ecmascript range). + */ + if (sizeof(time_t) < 8 && + (parts[DUK_DATE_IDX_YEAR] < 1970 || parts[DUK_DATE_IDX_YEAR] > 2037)) { + /* be paranoid for 32-bit time values (even avoiding negative ones) */ + return 0; + } + + DUK_MEMZERO(&tm, sizeof(tm)); + tm.tm_sec = parts[DUK_DATE_IDX_SECOND]; + tm.tm_min = parts[DUK_DATE_IDX_MINUTE]; + tm.tm_hour = parts[DUK_DATE_IDX_HOUR]; + tm.tm_mday = parts[DUK_DATE_IDX_DAY]; /* already one-based */ + tm.tm_mon = parts[DUK_DATE_IDX_MONTH] - 1; /* one-based -> zero-based */ + tm.tm_year = parts[DUK_DATE_IDX_YEAR] - 1900; + tm.tm_wday = parts[DUK_DATE_IDX_WEEKDAY]; + tm.tm_isdst = 0; + + DUK_MEMZERO(buf, sizeof(buf)); + if ((flags & DUK_DATE_FLAG_TOSTRING_DATE) && (flags & DUK_DATE_FLAG_TOSTRING_TIME)) { + fmt = "%c"; + } else if (flags & DUK_DATE_FLAG_TOSTRING_DATE) { + fmt = "%x"; + } else { + DUK_ASSERT(flags & DUK_DATE_FLAG_TOSTRING_TIME); + fmt = "%X"; + } + (void) strftime(buf, sizeof(buf) - 1, fmt, &tm); + DUK_ASSERT(buf[sizeof(buf) - 1] == 0); + + duk_push_string(ctx, buf); + return 1; +} +#endif /* DUK_USE_DATE_FMT_STRFTIME */ + +#undef DUK__STRPTIME_BUF_SIZE +#undef DUK__STRFTIME_BUF_SIZE http://git-wip-us.apache.org/repos/asf/nifi-minifi-cpp/blob/df353561/thirdparty/civetweb-1.10/src/third_party/duktape-1.5.2/src-separate/duk_bi_date_windows.c ---------------------------------------------------------------------- diff --git a/thirdparty/civetweb-1.10/src/third_party/duktape-1.5.2/src-separate/duk_bi_date_windows.c b/thirdparty/civetweb-1.10/src/third_party/duktape-1.5.2/src-separate/duk_bi_date_windows.c new file mode 100644 index 0000000..c131d22 --- /dev/null +++ b/thirdparty/civetweb-1.10/src/third_party/duktape-1.5.2/src-separate/duk_bi_date_windows.c @@ -0,0 +1,98 @@ +/* + * Windows Date providers + * + * Platform specific links: + * + * - http://msdn.microsoft.com/en-us/library/windows/desktop/ms725473(v=vs.85).aspx + */ + +#include "duk_internal.h" + +/* The necessary #includes are in place in duk_config.h. */ + +#if defined(DUK_USE_DATE_NOW_WINDOWS) || defined(DUK_USE_DATE_TZO_WINDOWS) +/* Shared Windows helpers. */ +DUK_LOCAL void duk__convert_systime_to_ularge(const SYSTEMTIME *st, ULARGE_INTEGER *res) { + FILETIME ft; + if (SystemTimeToFileTime(st, &ft) == 0) { + DUK_D(DUK_DPRINT("SystemTimeToFileTime() failed, returning 0")); + res->QuadPart = 0; + } else { + res->LowPart = ft.dwLowDateTime; + res->HighPart = ft.dwHighDateTime; + } +} +DUK_LOCAL void duk__set_systime_jan1970(SYSTEMTIME *st) { + DUK_MEMZERO((void *) st, sizeof(*st)); + st->wYear = 1970; + st->wMonth = 1; + st->wDayOfWeek = 4; /* not sure whether or not needed; Thursday */ + st->wDay = 1; + DUK_ASSERT(st->wHour == 0); + DUK_ASSERT(st->wMinute == 0); + DUK_ASSERT(st->wSecond == 0); + DUK_ASSERT(st->wMilliseconds == 0); +} +#endif /* defined(DUK_USE_DATE_NOW_WINDOWS) || defined(DUK_USE_DATE_TZO_WINDOWS) */ + +#ifdef DUK_USE_DATE_NOW_WINDOWS +DUK_INTERNAL duk_double_t duk_bi_date_get_now_windows(duk_context *ctx) { + /* Suggested step-by-step method from documentation of RtlTimeToSecondsSince1970: + * http://msdn.microsoft.com/en-us/library/windows/desktop/ms724928(v=vs.85).aspx + */ + SYSTEMTIME st1, st2; + ULARGE_INTEGER tmp1, tmp2; + + DUK_UNREF(ctx); + + GetSystemTime(&st1); + duk__convert_systime_to_ularge((const SYSTEMTIME *) &st1, &tmp1); + + duk__set_systime_jan1970(&st2); + duk__convert_systime_to_ularge((const SYSTEMTIME *) &st2, &tmp2); + + /* Difference is in 100ns units, convert to milliseconds w/o fractions */ + return (duk_double_t) ((tmp1.QuadPart - tmp2.QuadPart) / 10000LL); +} +#endif /* DUK_USE_DATE_NOW_WINDOWS */ + + +#if defined(DUK_USE_DATE_TZO_WINDOWS) +DUK_INTERNAL_DECL duk_int_t duk_bi_date_get_local_tzoffset_windows(duk_double_t d) { + SYSTEMTIME st1; + SYSTEMTIME st2; + SYSTEMTIME st3; + ULARGE_INTEGER tmp1; + ULARGE_INTEGER tmp2; + ULARGE_INTEGER tmp3; + FILETIME ft1; + + /* XXX: handling of timestamps outside Windows supported range. + * How does Windows deal with dates before 1600? Does windows + * support all Ecmascript years (like -200000 and +200000)? + * Should equivalent year mapping be used here too? If so, use + * a shared helper (currently integrated into timeval-to-parts). + */ + + /* Use the approach described in "Remarks" of FileTimeToLocalFileTime: + * http://msdn.microsoft.com/en-us/library/windows/desktop/ms724277(v=vs.85).aspx + */ + + duk__set_systime_jan1970(&st1); + duk__convert_systime_to_ularge((const SYSTEMTIME *) &st1, &tmp1); + tmp2.QuadPart = (ULONGLONG) (d * 10000.0); /* millisec -> 100ns units since jan 1, 1970 */ + tmp2.QuadPart += tmp1.QuadPart; /* input 'd' in Windows UTC, 100ns units */ + + ft1.dwLowDateTime = tmp2.LowPart; + ft1.dwHighDateTime = tmp2.HighPart; + FileTimeToSystemTime((const FILETIME *) &ft1, &st2); + if (SystemTimeToTzSpecificLocalTime((LPTIME_ZONE_INFORMATION) NULL, &st2, &st3) == 0) { + DUK_D(DUK_DPRINT("SystemTimeToTzSpecificLocalTime() failed, return tzoffset 0")); + return 0; + } + duk__convert_systime_to_ularge((const SYSTEMTIME *) &st3, &tmp3); + + /* Positive if local time ahead of UTC. */ + return (duk_int_t) (((LONGLONG) tmp3.QuadPart - (LONGLONG) tmp2.QuadPart) / 10000000LL); /* seconds */ +} +#endif /* DUK_USE_DATE_TZO_WINDOWS */ http://git-wip-us.apache.org/repos/asf/nifi-minifi-cpp/blob/df353561/thirdparty/civetweb-1.10/src/third_party/duktape-1.5.2/src-separate/duk_bi_duktape.c ---------------------------------------------------------------------- diff --git a/thirdparty/civetweb-1.10/src/third_party/duktape-1.5.2/src-separate/duk_bi_duktape.c b/thirdparty/civetweb-1.10/src/third_party/duktape-1.5.2/src-separate/duk_bi_duktape.c new file mode 100644 index 0000000..79d6919 --- /dev/null +++ b/thirdparty/civetweb-1.10/src/third_party/duktape-1.5.2/src-separate/duk_bi_duktape.c @@ -0,0 +1,321 @@ +/* + * Duktape built-ins + * + * Size optimization note: it might seem that vararg multipurpose functions + * like fin(), enc(), and dec() are not very size optimal, but using a single + * user-visible Ecmascript function saves a lot of run-time footprint; each + * Function instance takes >100 bytes. Using a shared native helper and a + * 'magic' value won't save much if there are multiple Function instances + * anyway. + */ + +#include "duk_internal.h" + +/* Raw helper to extract internal information / statistics about a value. + * The return values are version specific and must not expose anything + * that would lead to security issues (e.g. exposing compiled function + * 'data' buffer might be an issue). Currently only counts and sizes and + * such are given so there should not be a security impact. + */ +DUK_INTERNAL duk_ret_t duk_bi_duktape_object_info(duk_context *ctx) { + duk_hthread *thr = (duk_hthread *) ctx; + duk_tval *tv; + duk_heaphdr *h; + duk_int_t i, n; + + DUK_UNREF(thr); + + /* result array */ + duk_push_array(ctx); /* -> [ val arr ] */ + + /* type tag (public) */ + duk_push_int(ctx, duk_get_type(ctx, 0)); + + /* address */ + tv = duk_get_tval(ctx, 0); + DUK_ASSERT(tv != NULL); /* because arg count is 1 */ + if (DUK_TVAL_IS_HEAP_ALLOCATED(tv)) { + h = DUK_TVAL_GET_HEAPHDR(tv); + duk_push_pointer(ctx, (void *) h); + } else { + /* internal type tag */ + duk_push_int(ctx, (duk_int_t) DUK_TVAL_GET_TAG(tv)); + goto done; + } + DUK_ASSERT(h != NULL); + + /* refcount */ +#ifdef DUK_USE_REFERENCE_COUNTING + duk_push_size_t(ctx, DUK_HEAPHDR_GET_REFCOUNT(h)); +#else + duk_push_undefined(ctx); +#endif + + /* heaphdr size and additional allocation size, followed by + * type specific stuff (with varying value count) + */ + switch ((duk_small_int_t) DUK_HEAPHDR_GET_TYPE(h)) { + case DUK_HTYPE_STRING: { + duk_hstring *h_str = (duk_hstring *) h; + duk_push_uint(ctx, (duk_uint_t) (sizeof(duk_hstring) + DUK_HSTRING_GET_BYTELEN(h_str) + 1)); + break; + } + case DUK_HTYPE_OBJECT: { + duk_hobject *h_obj = (duk_hobject *) h; + duk_small_uint_t hdr_size; + if (DUK_HOBJECT_IS_COMPILEDFUNCTION(h_obj)) { + hdr_size = (duk_small_uint_t) sizeof(duk_hcompiledfunction); + } else if (DUK_HOBJECT_IS_NATIVEFUNCTION(h_obj)) { + hdr_size = (duk_small_uint_t) sizeof(duk_hnativefunction); + } else if (DUK_HOBJECT_IS_THREAD(h_obj)) { + hdr_size = (duk_small_uint_t) sizeof(duk_hthread); +#if defined(DUK_USE_BUFFEROBJECT_SUPPORT) + } else if (DUK_HOBJECT_IS_BUFFEROBJECT(h_obj)) { + hdr_size = (duk_small_uint_t) sizeof(duk_hbufferobject); +#endif + } else { + hdr_size = (duk_small_uint_t) sizeof(duk_hobject); + } + duk_push_uint(ctx, (duk_uint_t) hdr_size); + duk_push_uint(ctx, (duk_uint_t) DUK_HOBJECT_P_ALLOC_SIZE(h_obj)); + duk_push_uint(ctx, (duk_uint_t) DUK_HOBJECT_GET_ESIZE(h_obj)); + /* Note: e_next indicates the number of gc-reachable entries + * in the entry part, and also indicates the index where the + * next new property would be inserted. It does *not* indicate + * the number of non-NULL keys present in the object. That + * value could be counted separately but requires a pass through + * the key list. + */ + duk_push_uint(ctx, (duk_uint_t) DUK_HOBJECT_GET_ENEXT(h_obj)); + duk_push_uint(ctx, (duk_uint_t) DUK_HOBJECT_GET_ASIZE(h_obj)); + duk_push_uint(ctx, (duk_uint_t) DUK_HOBJECT_GET_HSIZE(h_obj)); + if (DUK_HOBJECT_IS_COMPILEDFUNCTION(h_obj)) { + duk_hbuffer *h_data = (duk_hbuffer *) DUK_HCOMPILEDFUNCTION_GET_DATA(thr->heap, (duk_hcompiledfunction *) h_obj); + if (h_data) { + duk_push_uint(ctx, (duk_uint_t) DUK_HBUFFER_GET_SIZE(h_data)); + } else { + duk_push_uint(ctx, 0); + } + } + break; + } + case DUK_HTYPE_BUFFER: { + duk_hbuffer *h_buf = (duk_hbuffer *) h; + if (DUK_HBUFFER_HAS_DYNAMIC(h_buf)) { + if (DUK_HBUFFER_HAS_EXTERNAL(h_buf)) { + duk_push_uint(ctx, (duk_uint_t) (sizeof(duk_hbuffer_external))); + } else { + /* When alloc_size == 0 the second allocation may not + * actually exist. + */ + duk_push_uint(ctx, (duk_uint_t) (sizeof(duk_hbuffer_dynamic))); + } + duk_push_uint(ctx, (duk_uint_t) (DUK_HBUFFER_GET_SIZE(h_buf))); + } else { + duk_push_uint(ctx, (duk_uint_t) (sizeof(duk_hbuffer_fixed) + DUK_HBUFFER_GET_SIZE(h_buf) + 1)); + } + break; + + } + } + + done: + /* set values into ret array */ + /* XXX: primitive to make array from valstack slice */ + n = duk_get_top(ctx); + for (i = 2; i < n; i++) { + duk_dup(ctx, i); + duk_put_prop_index(ctx, 1, i - 2); + } + duk_dup(ctx, 1); + return 1; +} + +DUK_INTERNAL duk_ret_t duk_bi_duktape_object_act(duk_context *ctx) { + duk_hthread *thr = (duk_hthread *) ctx; + duk_activation *act; + duk_uint_fast32_t pc; + duk_uint_fast32_t line; + duk_int_t level; + + /* -1 = top callstack entry, callstack[callstack_top - 1] + * -callstack_top = bottom callstack entry, callstack[0] + */ + level = duk_to_int(ctx, 0); + if (level >= 0 || -level > (duk_int_t) thr->callstack_top) { + return 0; + } + DUK_ASSERT(level >= -((duk_int_t) thr->callstack_top) && level <= -1); + act = thr->callstack + thr->callstack_top + level; + + duk_push_object(ctx); + + duk_push_tval(ctx, &act->tv_func); + + /* Relevant PC is just before current one because PC is + * post-incremented. This should match what error augment + * code does. + */ + pc = duk_hthread_get_act_prev_pc(thr, act); + duk_push_uint(ctx, (duk_uint_t) pc); + +#if defined(DUK_USE_PC2LINE) + line = duk_hobject_pc2line_query(ctx, -2, pc); +#else + line = 0; +#endif + duk_push_uint(ctx, (duk_uint_t) line); + + /* Providing access to e.g. act->lex_env would be dangerous: these + * internal structures must never be accessible to the application. + * Duktape relies on them having consistent data, and this consistency + * is only asserted for, not checked for. + */ + + /* [ level obj func pc line ] */ + + /* XXX: version specific array format instead? */ + duk_xdef_prop_stridx_wec(ctx, -4, DUK_STRIDX_LINE_NUMBER); + duk_xdef_prop_stridx_wec(ctx, -3, DUK_STRIDX_PC); + duk_xdef_prop_stridx_wec(ctx, -2, DUK_STRIDX_LC_FUNCTION); + return 1; +} + +DUK_INTERNAL duk_ret_t duk_bi_duktape_object_gc(duk_context *ctx) { +#ifdef DUK_USE_MARK_AND_SWEEP + duk_hthread *thr = (duk_hthread *) ctx; + duk_small_uint_t flags; + duk_bool_t rc; + + flags = (duk_small_uint_t) duk_get_uint(ctx, 0); + rc = duk_heap_mark_and_sweep(thr->heap, flags); + + /* XXX: Not sure what the best return value would be in the API. + * Return a boolean for now. Note that rc == 0 is success (true). + */ + duk_push_boolean(ctx, !rc); + return 1; +#else + DUK_UNREF(ctx); + return 0; +#endif +} + +DUK_INTERNAL duk_ret_t duk_bi_duktape_object_fin(duk_context *ctx) { + (void) duk_require_hobject(ctx, 0); + if (duk_get_top(ctx) >= 2) { + /* Set: currently a finalizer is disabled by setting it to + * undefined; this does not remove the property at the moment. + * The value could be type checked to be either a function + * or something else; if something else, the property could + * be deleted. + */ + duk_set_top(ctx, 2); + (void) duk_put_prop_stridx(ctx, 0, DUK_STRIDX_INT_FINALIZER); + return 0; + } else { + /* Get. */ + DUK_ASSERT(duk_get_top(ctx) == 1); + duk_get_prop_stridx(ctx, 0, DUK_STRIDX_INT_FINALIZER); + return 1; + } +} + +DUK_INTERNAL duk_ret_t duk_bi_duktape_object_enc(duk_context *ctx) { + duk_hthread *thr = (duk_hthread *) ctx; + duk_hstring *h_str; + + DUK_UNREF(thr); + + /* Vararg function: must be careful to check/require arguments. + * The JSON helpers accept invalid indices and treat them like + * non-existent optional parameters. + */ + + h_str = duk_require_hstring(ctx, 0); + duk_require_valid_index(ctx, 1); + + if (h_str == DUK_HTHREAD_STRING_HEX(thr)) { + duk_set_top(ctx, 2); + duk_hex_encode(ctx, 1); + DUK_ASSERT_TOP(ctx, 2); + } else if (h_str == DUK_HTHREAD_STRING_BASE64(thr)) { + duk_set_top(ctx, 2); + duk_base64_encode(ctx, 1); + DUK_ASSERT_TOP(ctx, 2); +#ifdef DUK_USE_JX + } else if (h_str == DUK_HTHREAD_STRING_JX(thr)) { + duk_bi_json_stringify_helper(ctx, + 1 /*idx_value*/, + 2 /*idx_replacer*/, + 3 /*idx_space*/, + DUK_JSON_FLAG_EXT_CUSTOM | + DUK_JSON_FLAG_ASCII_ONLY | + DUK_JSON_FLAG_AVOID_KEY_QUOTES /*flags*/); +#endif +#ifdef DUK_USE_JC + } else if (h_str == DUK_HTHREAD_STRING_JC(thr)) { + duk_bi_json_stringify_helper(ctx, + 1 /*idx_value*/, + 2 /*idx_replacer*/, + 3 /*idx_space*/, + DUK_JSON_FLAG_EXT_COMPATIBLE | + DUK_JSON_FLAG_ASCII_ONLY /*flags*/); +#endif + } else { + return DUK_RET_TYPE_ERROR; + } + return 1; +} + +DUK_INTERNAL duk_ret_t duk_bi_duktape_object_dec(duk_context *ctx) { + duk_hthread *thr = (duk_hthread *) ctx; + duk_hstring *h_str; + + DUK_UNREF(thr); + + /* Vararg function: must be careful to check/require arguments. + * The JSON helpers accept invalid indices and treat them like + * non-existent optional parameters. + */ + + h_str = duk_require_hstring(ctx, 0); + duk_require_valid_index(ctx, 1); + + if (h_str == DUK_HTHREAD_STRING_HEX(thr)) { + duk_set_top(ctx, 2); + duk_hex_decode(ctx, 1); + DUK_ASSERT_TOP(ctx, 2); + } else if (h_str == DUK_HTHREAD_STRING_BASE64(thr)) { + duk_set_top(ctx, 2); + duk_base64_decode(ctx, 1); + DUK_ASSERT_TOP(ctx, 2); +#ifdef DUK_USE_JX + } else if (h_str == DUK_HTHREAD_STRING_JX(thr)) { + duk_bi_json_parse_helper(ctx, + 1 /*idx_value*/, + 2 /*idx_replacer*/, + DUK_JSON_FLAG_EXT_CUSTOM /*flags*/); +#endif +#ifdef DUK_USE_JC + } else if (h_str == DUK_HTHREAD_STRING_JC(thr)) { + duk_bi_json_parse_helper(ctx, + 1 /*idx_value*/, + 2 /*idx_replacer*/, + DUK_JSON_FLAG_EXT_COMPATIBLE /*flags*/); +#endif + } else { + return DUK_RET_TYPE_ERROR; + } + return 1; +} + +/* + * Compact an object + */ + +DUK_INTERNAL duk_ret_t duk_bi_duktape_object_compact(duk_context *ctx) { + DUK_ASSERT_TOP(ctx, 1); + duk_compact(ctx, 0); + return 1; /* return the argument object */ +}
