43 lines
1.3 KiB
GDScript3
43 lines
1.3 KiB
GDScript3
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## Represents a Godot coroutine as an observable sequence
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static func from_godot_coroutine_(
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fun : Callable,
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bindings : Array = [],
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scheduler : SchedulerBase = null
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) -> Observable:
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var subscribe = func(
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observer : ObserverBase,
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scheduler_ : SchedulerBase = null
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) -> DisposableBase:
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var coroutine : Callable = fun
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var n_bind = bindings.size()
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for argi in range(n_bind):
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coroutine = coroutine.bind(bindings[n_bind - argi - 1])
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var _scheduler
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if scheduler != null: _scheduler = scheduler
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elif scheduler_ != null: _scheduler = scheduler_
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else: _scheduler = CurrentThreadScheduler.singleton()
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var action = func(_scheduler : SchedulerBase, _state = null):
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var res = RefValue.Null()
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if GDRx.try(func():
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# WARNING! This await is not redundant as it seems.
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# At this point we do not know if 'coroutine' really is a
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# coroutine but either way should this code work! If 'coroutine'
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# was a member function Godot would throw an error telling us
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# that this is, in fact, a coroutine if it contains an 'await'.
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@warning_ignore("redundant_await")
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res.v = await coroutine.call()
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observer.on_next(res.v)
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observer.on_completed()
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) \
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.catch("Error", func(e):
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observer.on_error(e)
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) \
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.end_try_catch(): return
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return _scheduler.schedule(action)
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return Observable.new(subscribe)
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