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Bubberstation/code/__HELPERS/weakref.dm
SkyratBot a8c10d1659 [MIRROR] Converts a shitload of istypes to their more concise macros [MDB IGNORE] (#15702)
Converts a shitload of istypes to their more concise macros

Co-authored-by: Seth Scherer <supernovaa41@gmx.com>
Co-authored-by: GoldenAlpharex <jerego1234@hotmail.com>
2022-08-27 16:23:44 -04:00

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/// Checks if potential_weakref is a weakref of thing.
#define IS_WEAKREF_OF(thing, potential_weakref) (isdatum(thing) && !isnull(potential_weakref) && thing.weak_reference == potential_weakref)
//For these two procs refs MUST be ref = TRUE format like typecaches!
/proc/weakref_filter_list(list/things, list/refs)
if(!islist(things) || !islist(refs))
return
if(!refs.len)
return things
if(things.len > refs.len)
var/list/f = list()
for(var/i in refs)
var/datum/weakref/r = i
var/datum/d = r.resolve()
if(d)
f |= d
return things & f
else
. = list()
for(var/i in things)
if(!refs[WEAKREF(i)])
continue
. |= i
/proc/weakref_filter_list_reverse(list/things, list/refs)
if(!islist(things) || !islist(refs))
return
if(!refs.len)
return things
if(things.len > refs.len)
var/list/f = list()
for(var/i in refs)
var/datum/weakref/r = i
var/datum/d = r.resolve()
if(d)
f |= d
return things - f
else
. = list()
for(var/i in things)
if(refs[WEAKREF(i)])
continue
. |= i