37 lines
889 B
GDScript3
37 lines
889 B
GDScript3
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class_name IteratorBase
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## An iterator type
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##
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## An [IteratorBase] iterates over an [IterableBase] using [method next].
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## Returns next element in the iterable sequence. Return instance of
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## [ItEnd] when end is reached.
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func next() -> Variant:
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NotImplementedError.raise()
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return null
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## Return 'true' if the sequence has another element.
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func has_next() -> bool:
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NotImplementedError.raise()
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return false
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## Returns the first element within the sequence
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func front() -> Variant:
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NotImplementedError.raise()
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return null
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## Returns the last element within the sequence
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func back() -> Variant:
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NotImplementedError.raise()
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return null
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## Returns 'true' if the iterable sequence is empty.
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func empty() -> bool:
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NotImplementedError.raise()
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return false
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## Returns the n-th element within the sequence.
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func at(_n : int) -> Variant:
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NotImplementedError.raise()
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return false
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