44 lines
1.3 KiB
GDScript3
44 lines
1.3 KiB
GDScript3
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class_name AutoDisposer
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## Links a [DisposableBase] to an [Object]'s lifetime.
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var _disp : DisposableBase
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func _init(disp : DisposableBase):
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self._disp = disp
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func _notification(what):
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if what == NOTIFICATION_PREDELETE:
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self._disp.dispose()
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static func _meta_key(obj : Object, disp : DisposableBase):
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var disp_id : int = disp.get_instance_id()
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var obj_id : int = obj.get_instance_id()
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var meta_entry = "autodispose_" + \
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("0" if disp_id > 0 else "1") + \
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("0" if obj_id > 0 else "1") + \
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"_d" + str(abs(disp_id)) + "_o" + str(abs(obj_id))
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return meta_entry
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static func _collect_garbage(obj : Object):
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for meta_key in obj.get_meta_list():
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var meta_entry = obj.get_meta(meta_key)
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if meta_entry is AutoDisposer:
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if meta_entry._disp.get("is_disposed"):
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obj.remove_meta(meta_entry)
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static func add(obj : Object, disp : DisposableBase) -> AutoDisposer:
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AutoDisposer._collect_garbage(obj)
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var auto_disposer : AutoDisposer = AutoDisposer.new(disp)
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var meta_key = AutoDisposer._meta_key(obj, disp)
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obj.set_meta(meta_key, auto_disposer)
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return auto_disposer
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static func remove(obj : Object, disp : DisposableBase):
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var meta_key = AutoDisposer._meta_key(obj, disp)
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obj.remove_meta(meta_key)
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static func remove_and_dispose(obj : Object, disp : DisposableBase):
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AutoDisposer.remove(obj, disp)
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disp.dispose()
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