You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
151 lines
4.2 KiB
151 lines
4.2 KiB
from functools import partial
|
|
import inspect
|
|
|
|
from typing import (
|
|
Any,
|
|
Callable,
|
|
Iterable,
|
|
List,
|
|
Optional,
|
|
overload,
|
|
Union,
|
|
Tuple,
|
|
Type,
|
|
TypeVar,
|
|
)
|
|
|
|
|
|
T = TypeVar("T")
|
|
|
|
|
|
Result = Iterable[Union[Any, Tuple[Any], Tuple[str, Any], Tuple[str, Any, Any]]]
|
|
RichReprResult = Result
|
|
|
|
|
|
class ReprError(Exception):
|
|
"""An error occurred when attempting to build a repr."""
|
|
|
|
|
|
@overload
|
|
def auto(cls: Optional[T]) -> T:
|
|
...
|
|
|
|
|
|
@overload
|
|
def auto(*, angular: bool = False) -> Callable[[T], T]:
|
|
...
|
|
|
|
|
|
def auto(
|
|
cls: Optional[T] = None, *, angular: Optional[bool] = None
|
|
) -> Union[T, Callable[[T], T]]:
|
|
"""Class decorator to create __repr__ from __rich_repr__"""
|
|
|
|
def do_replace(cls: Type[T], angular: Optional[bool] = None) -> Type[T]:
|
|
def auto_repr(self: Type[T]) -> str:
|
|
"""Create repr string from __rich_repr__"""
|
|
repr_str: List[str] = []
|
|
append = repr_str.append
|
|
|
|
angular = getattr(self.__rich_repr__, "angular", False) # type: ignore
|
|
for arg in self.__rich_repr__(): # type: ignore
|
|
if isinstance(arg, tuple):
|
|
if len(arg) == 1:
|
|
append(repr(arg[0]))
|
|
else:
|
|
key, value, *default = arg
|
|
if key is None:
|
|
append(repr(value))
|
|
else:
|
|
if len(default) and default[0] == value:
|
|
continue
|
|
append(f"{key}={value!r}")
|
|
else:
|
|
append(repr(arg))
|
|
if angular:
|
|
return f"<{self.__class__.__name__} {' '.join(repr_str)}>"
|
|
else:
|
|
return f"{self.__class__.__name__}({', '.join(repr_str)})"
|
|
|
|
def auto_rich_repr(self: Type[T]) -> Result:
|
|
"""Auto generate __rich_rep__ from signature of __init__"""
|
|
try:
|
|
signature = inspect.signature(self.__init__) ## type: ignore
|
|
for name, param in signature.parameters.items():
|
|
if param.kind == param.POSITIONAL_ONLY:
|
|
yield getattr(self, name)
|
|
elif param.kind in (
|
|
param.POSITIONAL_OR_KEYWORD,
|
|
param.KEYWORD_ONLY,
|
|
):
|
|
if param.default == param.empty:
|
|
yield getattr(self, param.name)
|
|
else:
|
|
yield param.name, getattr(self, param.name), param.default
|
|
except Exception as error:
|
|
raise ReprError(
|
|
f"Failed to auto generate __rich_repr__; {error}"
|
|
) from None
|
|
|
|
if not hasattr(cls, "__rich_repr__"):
|
|
auto_rich_repr.__doc__ = "Build a rich repr"
|
|
cls.__rich_repr__ = auto_rich_repr # type: ignore
|
|
|
|
auto_repr.__doc__ = "Return repr(self)"
|
|
cls.__repr__ = auto_repr # type: ignore
|
|
if angular is not None:
|
|
cls.__rich_repr__.angular = angular # type: ignore
|
|
return cls
|
|
|
|
if cls is None:
|
|
return partial(do_replace, angular=angular) # type: ignore
|
|
else:
|
|
return do_replace(cls, angular=angular) # type: ignore
|
|
|
|
|
|
@overload
|
|
def rich_repr(cls: Optional[T]) -> T:
|
|
...
|
|
|
|
|
|
@overload
|
|
def rich_repr(*, angular: bool = False) -> Callable[[T], T]:
|
|
...
|
|
|
|
|
|
def rich_repr(
|
|
cls: Optional[T] = None, *, angular: bool = False
|
|
) -> Union[T, Callable[[T], T]]:
|
|
if cls is None:
|
|
return auto(angular=angular)
|
|
else:
|
|
return auto(cls)
|
|
|
|
|
|
if __name__ == "__main__":
|
|
|
|
@auto
|
|
class Foo:
|
|
def __rich_repr__(self) -> Result:
|
|
yield "foo"
|
|
yield "bar", {"shopping": ["eggs", "ham", "pineapple"]}
|
|
yield "buy", "hand sanitizer"
|
|
|
|
foo = Foo()
|
|
from pip._vendor.rich.console import Console
|
|
|
|
console = Console()
|
|
|
|
console.rule("Standard repr")
|
|
console.print(foo)
|
|
|
|
console.print(foo, width=60)
|
|
console.print(foo, width=30)
|
|
|
|
console.rule("Angular repr")
|
|
Foo.__rich_repr__.angular = True # type: ignore
|
|
|
|
console.print(foo)
|
|
|
|
console.print(foo, width=60)
|
|
console.print(foo, width=30)
|
|
|