mirror of
https://github.com/PiBrewing/craftbeerpi4.git
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109 lines
3.4 KiB
Python
109 lines
3.4 KiB
Python
import ast
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from pprint import PrettyPrinter
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from typing import Any, Callable, Dict, List, Set, Tuple
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from isort.exceptions import (
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AssignmentsFormatMismatch,
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LiteralParsingFailure,
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LiteralSortTypeMismatch,
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)
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from isort.settings import DEFAULT_CONFIG, Config
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class ISortPrettyPrinter(PrettyPrinter):
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"""an isort customized pretty printer for sorted literals"""
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def __init__(self, config: Config):
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super().__init__(width=config.line_length, compact=True)
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type_mapping: Dict[str, Tuple[type, Callable[[Any, ISortPrettyPrinter], str]]] = {}
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def assignments(code: str) -> str:
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values = {}
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for line in code.splitlines(keepends=True):
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if not line.strip():
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continue
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if " = " not in line:
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raise AssignmentsFormatMismatch(code)
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variable_name, value = line.split(" = ", 1)
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values[variable_name] = value
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return "".join(
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f"{variable_name} = {values[variable_name]}" for variable_name in sorted(values.keys())
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)
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def assignment(code: str, sort_type: str, extension: str, config: Config = DEFAULT_CONFIG) -> str:
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"""Sorts the literal present within the provided code against the provided sort type,
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returning the sorted representation of the source code.
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"""
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if sort_type == "assignments":
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return assignments(code)
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if sort_type not in type_mapping:
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raise ValueError(
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"Trying to sort using an undefined sort_type. "
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f"Defined sort types are {', '.join(type_mapping.keys())}."
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)
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variable_name, literal = code.split(" = ")
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variable_name = variable_name.lstrip()
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try:
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value = ast.literal_eval(literal)
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except Exception as error:
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raise LiteralParsingFailure(code, error)
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expected_type, sort_function = type_mapping[sort_type]
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if type(value) != expected_type:
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raise LiteralSortTypeMismatch(type(value), expected_type)
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printer = ISortPrettyPrinter(config)
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sorted_value_code = f"{variable_name} = {sort_function(value, printer)}"
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if config.formatting_function:
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sorted_value_code = config.formatting_function(
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sorted_value_code, extension, config
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).rstrip()
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sorted_value_code += code[len(code.rstrip()) :]
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return sorted_value_code
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def register_type(name: str, kind: type):
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"""Registers a new literal sort type."""
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def wrap(function):
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type_mapping[name] = (kind, function)
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return function
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return wrap
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@register_type("dict", dict)
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def _dict(value: Dict[Any, Any], printer: ISortPrettyPrinter) -> str:
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return printer.pformat(dict(sorted(value.items(), key=lambda item: item[1])))
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@register_type("list", list)
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def _list(value: List[Any], printer: ISortPrettyPrinter) -> str:
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return printer.pformat(sorted(value))
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@register_type("unique-list", list)
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def _unique_list(value: List[Any], printer: ISortPrettyPrinter) -> str:
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return printer.pformat(list(sorted(set(value))))
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@register_type("set", set)
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def _set(value: Set[Any], printer: ISortPrettyPrinter) -> str:
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return "{" + printer.pformat(tuple(sorted(value)))[1:-1] + "}"
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@register_type("tuple", tuple)
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def _tuple(value: Tuple[Any, ...], printer: ISortPrettyPrinter) -> str:
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return printer.pformat(tuple(sorted(value)))
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@register_type("unique-tuple", tuple)
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def _unique_tuple(value: Tuple[Any, ...], printer: ISortPrettyPrinter) -> str:
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return printer.pformat(tuple(sorted(set(value))))
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