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|
from typing import (
Any,
Callable,
Dict,
Generator,
List,
Tuple,
Union,
)
import warnings
from .decorators import (
return_arg_type,
)
from .functional import (
to_dict,
)
from .pydantic import (
CamelModel,
)
from .toolz import (
compose,
curry,
)
Formatters = Callable[[List[Any]], List[Any]]
@return_arg_type(2)
def apply_formatter_at_index(
formatter: Callable[..., Any], at_index: int, value: List[Any]
) -> Generator[List[Any], None, None]:
if at_index + 1 > len(value):
raise IndexError(
f"Not enough values in iterable to apply formatter. Got: {len(value)}. "
f"Need: {at_index + 1}"
)
for index, item in enumerate(value):
if index == at_index:
yield formatter(item)
else:
yield item
def combine_argument_formatters(*formatters: List[Callable[..., Any]]) -> Formatters:
warnings.warn(
DeprecationWarning(
"combine_argument_formatters(formatter1, formatter2)([item1, item2])"
"has been deprecated and will be removed in a subsequent major version "
"release of the eth-utils library. Update your calls to use "
"apply_formatters_to_sequence([formatter1, formatter2], [item1, item2]) "
"instead."
),
stacklevel=2,
)
_formatter_at_index = curry(apply_formatter_at_index)
return compose( # type: ignore
*(
_formatter_at_index(formatter, index)
for index, formatter in enumerate(formatters)
)
)
@return_arg_type(1)
def apply_formatters_to_sequence(
formatters: List[Any], sequence: List[Any]
) -> Generator[List[Any], None, None]:
if len(formatters) > len(sequence):
raise IndexError(
f"Too many formatters for sequence: {len(formatters)} formatters for "
f"{repr(sequence)}"
)
elif len(formatters) < len(sequence):
raise IndexError(
f"Too few formatters for sequence: {len(formatters)} formatters for "
f"{repr(sequence)}"
)
else:
for formatter, item in zip(formatters, sequence):
yield formatter(item)
def apply_formatter_if(
condition: Callable[..., bool], formatter: Callable[..., Any], value: Any
) -> Any:
if condition(value):
return formatter(value)
else:
return value
@to_dict
def apply_formatters_to_dict(
formatters: Dict[Any, Any],
value: Union[Dict[Any, Any], CamelModel],
unaliased: bool = False,
) -> Generator[Tuple[Any, Any], None, None]:
"""
Apply formatters to a dictionary of values. If the value is a pydantic model,
it will be serialized to a dictionary first, taking into account the
``unaliased`` parameter.
:param formatters: The formatters to apply to the dictionary.
:param value: The dictionary-like object to apply the formatters to.
:param unaliased: If the model is a ``CamelModel``, whether to turn off
serialization by alias (camelCase).
:return: A generator that yields the formatted key-value pairs.
"""
if isinstance(value, CamelModel):
value = value.model_dump(by_alias=not unaliased)
for key, item in value.items():
if key in formatters:
try:
yield key, formatters[key](item)
except ValueError as exc:
new_error_message = (
f"Could not format invalid value {repr(item)} as field {repr(key)}"
)
raise ValueError(new_error_message) from exc
except TypeError as exc:
new_error_message = (
f"Could not format invalid type {repr(item)} as field {repr(key)}"
)
raise TypeError(new_error_message) from exc
else:
yield key, item
@return_arg_type(1)
def apply_formatter_to_array(
formatter: Callable[..., Any], value: List[Any]
) -> Generator[List[Any], None, None]:
for item in value:
yield formatter(item)
def apply_one_of_formatters(
formatter_condition_pairs: Tuple[Tuple[Callable[..., Any], Callable[..., Any]]],
value: Any,
) -> Any:
for condition, formatter in formatter_condition_pairs:
if condition(value):
return formatter(value)
else:
raise ValueError(
"The provided value did not satisfy any of the formatter conditions"
)
@to_dict
def apply_key_map(
key_mappings: Dict[Any, Any], value: Dict[Any, Any]
) -> Generator[Tuple[Any, Any], None, None]:
key_conflicts = (
set(value.keys())
.difference(key_mappings.keys())
.intersection(v for k, v in key_mappings.items() if v in value)
)
if key_conflicts:
raise KeyError(
f"Could not apply key map due to conflicting key(s): {key_conflicts}"
)
for key, item in value.items():
if key in key_mappings:
yield key_mappings[key], item
else:
yield key, item
|
