Created
August 3, 2025 09:00
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| from typing import Generator | |
| class SequenceValidator: | |
| def __init__(self) -> None: | |
| self._generator = self.check() | |
| self._consumed = -1 | |
| next(self._generator) | |
| def feed(self, text: str) -> tuple[int, bool | None]: | |
| try: | |
| for character in text: | |
| self._consumed += 1 | |
| self._generator.send(character) | |
| except StopIteration as stop_iteration: | |
| return (self._consumed, stop_iteration.value) | |
| else: | |
| return (self._consumed, None) | |
| def check(self) -> Generator[None, str, bool | None]: | |
| return False | |
| yield | |
| class BracesNumber(SequenceValidator): | |
| """A [ followed by 0 or more digits followed by ]""" | |
| def check(self) -> Generator[None, str, bool | None]: | |
| if (yield) != "[": | |
| return False | |
| while (character := (yield)) in "0123456789": | |
| pass | |
| return character == "]" | |
| data = "[123]" | |
| validator = BracesNumber() | |
| for character in data: | |
| print(validator.feed(character)) | |
| print("---") | |
| data = "[123)" | |
| validator = BracesNumber() | |
| for character in data: | |
| print(validator.feed(character)) |
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