Adds direct support for weakrefs to vv (#64521)

* Adds direct support for weakrefs to vv

* Update code/modules/admin/view_variables/get_variables.dm

Co-authored-by: Mothblocks <35135081+Mothblocks@users.noreply.github.com>

* Fine, have a readable name.

Co-authored-by: Mothblocks <35135081+Mothblocks@users.noreply.github.com>

code/__DEFINES/vv.dm

@@ -25,6 +25,7 @@
 #define VV_BITFIELD "Bitfield"
 #define VV_TEXT_LOCATE "Custom Reference Locate"
 #define VV_PROCCALL_RETVAL "Return Value of Proccall"
+#define VV_WEAKREF "Weak Reference Datum"
 
 #define VV_MSG_MARKED "<br><font size='1' color='red'><b>Marked Object</b></font>"
 #define VV_MSG_EDITED "<br><font size='1' color='red'><b>Var Edited</b></font>"
@@ -163,3 +164,5 @@
 #define VV_HK_SPELL_UNSET_HUMANONLY "spell_unset_humanonly"
 /// Abstract mobs such as brains or pAIs can cast this spell.
 #define VV_HK_SPELL_UNSET_NONABSTRACT "spell_unset_nonabstract"
+
+#define VV_HK_WEAKREF_RESOLVE "weakref_resolve"

code/datums/weakrefs.dm

@@ -75,3 +75,17 @@
 /datum/weakref/proc/resolve()
 	var/datum/D = locate(reference)
 	return (!QDELETED(D) && D.weak_reference == src) ? D : null
+
+
+/datum/weakref/vv_get_dropdown()
+	. = ..()
+	VV_DROPDOWN_OPTION(VV_HK_WEAKREF_RESOLVE, "Go to reference")
+
+/datum/weakref/vv_do_topic(list/href_list)
+	. = ..()
+	if(href_list[VV_HK_WEAKREF_RESOLVE])
+		if(!check_rights(NONE))
+			return
+		var/datum/R = resolve()
+		if(R)
+			usr.client.debug_variables(R)

code/modules/admin/view_variables/debug_variables.dm

@@ -61,6 +61,9 @@
 			item = "[name_part] = <a href='?_src_=vars;[HrefToken()];Vars=[REF(value)]'>[DV] [DV.type] [REF(value)]</a>"
 		else
 			item = "[name_part] = <a href='?_src_=vars;[HrefToken()];Vars=[REF(value)]'>[DV.type] [REF(value)]</a>"
+		if(istype(value,/datum/weakref))
+			var/datum/weakref/weakref = value
+			item += " <a href='?_src_=vars;[HrefToken()];Vars=[REF(weakref.reference)]'>(Resolve)</a>"
 
 	else if (islist(value))
 		var/list/L = value

code/modules/admin/view_variables/get_variables.dm

@@ -28,6 +28,9 @@
 	else if(istype(var_value, /client))
 		. = VV_CLIENT
 
+	else if(istype(var_value, /datum/weakref))
+		. = VV_WEAKREF
+
 	else if(istype(var_value, /datum))
 		. = VV_DATUM_REFERENCE
 
@@ -78,6 +81,7 @@
 				VV_RESTORE_DEFAULT,
 				VV_TEXT_LOCATE,
 				VV_PROCCALL_RETVAL,
+				VV_WEAKREF,
 				)
 
 		var/markstring
@@ -201,6 +205,19 @@
 				return
 			.["value"] = things[value]
 
+		if(VV_WEAKREF)
+			var/type = pick_closest_path(FALSE, get_fancy_list_of_datum_types())
+			var/subtypes = vv_subtype_prompt(type)
+			if(subtypes == null)
+				.["class"] = null
+				return
+			var/list/things = vv_reference_list(type, subtypes)
+			var/value = input("Select reference:", "Reference", current_value) as null|anything in things
+			if(!value)
+				.["class"] = null
+				return
+			.["value"] = WEAKREF(things[value])
+
 		if(VV_CLIENT)
 			.["value"] = input("Select reference:", "Reference", current_value) as null|anything in GLOB.clients
 			if(.["value"] == null)