| | 1 | """An error-handling model influenced by that used by the Rust programming language |
| | 2 | |
| | 3 | See https://doc.rust-lang.org/book/ch09-00-error-handling.html. |
| | 4 | """ |
| | 5 | from typing import Generic, TypeVar, Union |
| | 6 | |
| | 7 | T = TypeVar("T") |
| | 8 | E = TypeVar("E", bound=Exception) |
| | 9 | |
| | 10 | |
| | 11 | class Ok(Generic[T]): |
| | 12 | def __init__(self, value: T) -> None: |
| | 13 | self._value = value |
| | 14 | |
| | 15 | def ok(self) -> T: |
| | 16 | return self._value |
| | 17 | |
| | 18 | |
| | 19 | class Err(Generic[E]): |
| | 20 | def __init__(self, e: E) -> None: |
| | 21 | self._e = e |
| | 22 | |
| | 23 | def err(self) -> E: |
| | 24 | return self._e |
| | 25 | |
| | 26 | |
| | 27 | Result = Union[Ok[T], Err[E]] |
projects / config.git / blame_incremental