49 lines
1.5 KiB
GDScript3
49 lines
1.5 KiB
GDScript3
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## Converts the function into an asynchronous function. Each
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## invocation of the resulting asynchronous function causes an
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## invocation of the original synchronous function on the specified
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## scheduler.
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## [br]
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## [b]Examples:[/b]
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## [codeblock]
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## var res = GDRx.obs.to_async(func(x, y): return x + y).call(4, 3)
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## var res = GDRx.obs.to_async(func(x, y): return x + y, GDRx.TimeoutScheduler_).call(4, 3)
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## var res = GDRx.obs.to_async(func(x): print(x), GDRx.TimeoutScheduler_).call("hello")
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## [/codeblock]
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## [br]
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## [b]Args:[/b]
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## [br]
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## [code]func[/code] Function to convert to an asynchronous function.
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## [br]
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## [code]scheduler[/code] [Optional] Scheduler to run the function on. If not
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## specified, defaults to GDRx.TimeoutScheduler_.
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## [br][br]
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## [b]Returns:[/b]
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## [br]
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## Aynchronous function.
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static func to_async_(
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fun : Callable, scheduler : SchedulerBase = null
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) -> Callable:
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var _scheduler = scheduler if scheduler != null else SceneTreeTimeoutScheduler.singleton()
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var wrapper = func(args : Array) -> Observable:
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var subject = AsyncSubject.new()
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var action = func(_scheduler : SchedulerBase, _state = null):
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var result = RefValue.Null()
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if GDRx.try(func():
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result.v = fun.call(args)
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) \
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.catch("Error", func(err):
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subject.on_error(err)
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) \
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.end_try_catch(): return
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subject.on_next(result.v)
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subject.on_completed()
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_scheduler.schedule(action)
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return subject.as_observable()
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return wrapper
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