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Justine Tunney 2020-06-15 07:18:57 -07:00
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110
third_party/duktape/duk_api_time.c vendored Normal file
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/*
* Date/time.
*/
#include "third_party/duktape/duk_internal.h"
DUK_INTERNAL duk_double_t duk_time_get_ecmascript_time(duk_hthread *thr) {
/* ECMAScript time, with millisecond fractions. Exposed via
* duk_get_now() for example.
*/
DUK_UNREF(thr);
return (duk_double_t) DUK_USE_DATE_GET_NOW(thr);
}
DUK_INTERNAL duk_double_t duk_time_get_ecmascript_time_nofrac(duk_hthread *thr) {
/* ECMAScript time without millisecond fractions. Exposed via
* the Date built-in which doesn't allow fractions.
*/
DUK_UNREF(thr);
return (duk_double_t) DUK_FLOOR(DUK_USE_DATE_GET_NOW(thr));
}
DUK_INTERNAL duk_double_t duk_time_get_monotonic_time(duk_hthread *thr) {
DUK_UNREF(thr);
#if defined(DUK_USE_GET_MONOTONIC_TIME)
return (duk_double_t) DUK_USE_GET_MONOTONIC_TIME(thr);
#else
return (duk_double_t) DUK_USE_DATE_GET_NOW(thr);
#endif
}
DUK_EXTERNAL duk_double_t duk_get_now(duk_hthread *thr) {
DUK_ASSERT_API_ENTRY(thr);
DUK_UNREF(thr);
/* This API intentionally allows millisecond fractions. */
return duk_time_get_ecmascript_time(thr);
}
#if 0 /* XXX: worth exposing? */
DUK_EXTERNAL duk_double_t duk_get_monotonic_time(duk_hthread *thr) {
DUK_ASSERT_API_ENTRY(thr);
DUK_UNREF(thr);
return duk_time_get_monotonic_time(thr);
}
#endif
DUK_EXTERNAL void duk_time_to_components(duk_hthread *thr, duk_double_t timeval, duk_time_components *comp) {
duk_int_t parts[DUK_DATE_IDX_NUM_PARTS];
duk_double_t dparts[DUK_DATE_IDX_NUM_PARTS];
duk_uint_t flags;
DUK_ASSERT_API_ENTRY(thr);
DUK_ASSERT(comp != NULL); /* XXX: or check? */
DUK_UNREF(thr);
/* Convert as one-based, but change month to zero-based to match the
* ECMAScript Date built-in behavior 1:1.
*/
flags = DUK_DATE_FLAG_ONEBASED | DUK_DATE_FLAG_NAN_TO_ZERO;
duk_bi_date_timeval_to_parts(timeval, parts, dparts, flags);
/* XXX: sub-millisecond accuracy for the API */
DUK_ASSERT(dparts[DUK_DATE_IDX_MONTH] >= 1.0 && dparts[DUK_DATE_IDX_MONTH] <= 12.0);
comp->year = dparts[DUK_DATE_IDX_YEAR];
comp->month = dparts[DUK_DATE_IDX_MONTH] - 1.0;
comp->day = dparts[DUK_DATE_IDX_DAY];
comp->hours = dparts[DUK_DATE_IDX_HOUR];
comp->minutes = dparts[DUK_DATE_IDX_MINUTE];
comp->seconds = dparts[DUK_DATE_IDX_SECOND];
comp->milliseconds = dparts[DUK_DATE_IDX_MILLISECOND];
comp->weekday = dparts[DUK_DATE_IDX_WEEKDAY];
}
DUK_EXTERNAL duk_double_t duk_components_to_time(duk_hthread *thr, duk_time_components *comp) {
duk_double_t d;
duk_double_t dparts[DUK_DATE_IDX_NUM_PARTS];
duk_uint_t flags;
DUK_ASSERT_API_ENTRY(thr);
DUK_ASSERT(comp != NULL); /* XXX: or check? */
DUK_UNREF(thr);
/* Match Date constructor behavior (with UTC time). Month is given
* as zero-based. Day-of-month is given as one-based so normalize
* it to zero-based as the internal conversion helpers expects all
* components to be zero-based.
*/
flags = 0;
/* XXX: expensive conversion; use array format in API instead, or unify
* time provider and time API to use same struct?
*/
dparts[DUK_DATE_IDX_YEAR] = comp->year;
dparts[DUK_DATE_IDX_MONTH] = comp->month;
dparts[DUK_DATE_IDX_DAY] = comp->day - 1.0;
dparts[DUK_DATE_IDX_HOUR] = comp->hours;
dparts[DUK_DATE_IDX_MINUTE] = comp->minutes;
dparts[DUK_DATE_IDX_SECOND] = comp->seconds;
dparts[DUK_DATE_IDX_MILLISECOND] = comp->milliseconds;
dparts[DUK_DATE_IDX_WEEKDAY] = 0; /* ignored */
d = duk_bi_date_get_timeval_from_dparts(dparts, flags);
return d;
}