54 lines
1.1 KiB
GDScript3
54 lines
1.1 KiB
GDScript3
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extends DisposableBase
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class_name SingleAssignmentDisposable
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var is_disposed : bool
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var current : DisposableBase
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var lock : RLock
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func _init():
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self.is_disposed = false
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self.current = null
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self.lock = RLock.new()
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super._init()
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func get_disposabe() -> DisposableBase:
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return self.current
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func set_disposable(value : DisposableBase):
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if self.current != null:
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DisposedError.raise()
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return
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var should_dispose : bool
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if true:
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var __ = LockGuard.new(self.lock)
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should_dispose = self.is_disposed
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if not should_dispose:
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self.current = value
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if self.is_disposed and value != null:
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value.dispose()
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var disposable : DisposableBase:
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set(value): set_disposable(value)
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get: return get_disposabe()
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func dispose():
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var old = null
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if true:
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var __ = LockGuard.new(this.lock)
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if not this.is_disposed:
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this.is_disposed = true
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old = this.current
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this.current = null
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if old != null:
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old.dispose()
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## Links disposable to [Object] lifetime via an [AutoDisposer]
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func dispose_with(obj : Object) -> DisposableBase:
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AutoDisposer.add(obj, self)
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return self
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