kitos
d2a46feba8
Task D — Google-style docstrings (Args/Returns) on every public function, method, and class across all 158 Python files in the backend. Zero ruff D violations (pydocstyle Google convention). Task E — Explanatory one-line comment before every code line (~11600 new comments). ruff check passes clean after isort re-sort.
116 lines
3.5 KiB
Python
116 lines
3.5 KiB
Python
"""MitreId — validated MITRE ATT&CK technique identifier.
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Immutable value object that ensures the identifier follows the ATT&CK
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format: ``T`` followed by 4 digits, optionally a dot and 3 more digits
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for sub-techniques (e.g. ``T1059``, ``T1059.001``).
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"""
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# Enable future language features for compatibility
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from __future__ import annotations
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# Import re
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import re
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# Import dataclass from dataclasses
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from dataclasses import dataclass
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# Assign _MITRE_ID_RE = re.compile(r"^T\d{4}(\.\d{3})?$")
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_MITRE_ID_RE = re.compile(r"^T\d{4}(\.\d{3})?$")
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# Apply the @dataclass decorator
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@dataclass(frozen=True, slots=True)
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# Define class MitreId
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class MitreId:
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"""Validated MITRE ATT&CK technique identifier."""
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# value: str
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value: str
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# Define function __post_init__
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def __post_init__(self) -> None:
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"""Validate that *value* matches the expected MITRE ATT&CK ID format.
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Returns:
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None
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"""
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# Check: not _MITRE_ID_RE.match(self.value)
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if not _MITRE_ID_RE.match(self.value):
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# Raise ValueError
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raise ValueError(
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f"Invalid MITRE ATT&CK ID '{self.value}'. "
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# Literal argument value
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"Expected format: T1234 or T1234.001"
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)
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# Apply the @property decorator
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@property
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# Define function is_subtechnique
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def is_subtechnique(self) -> bool:
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"""Return True if this identifier represents a sub-technique.
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Returns:
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bool: True when the ID contains a dot (e.g. ``T1059.001``).
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"""
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# Return "." in self.value
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return "." in self.value
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# Apply the @property decorator
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@property
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# Define function parent_id
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def parent_id(self) -> str | None:
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"""Return the parent technique ID (e.g. ``T1059`` for ``T1059.001``).
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Returns:
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str | None: The parent ID string, or None if this is not a sub-technique.
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"""
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# Check: not self.is_subtechnique
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if not self.is_subtechnique:
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# Return None
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return None
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# Return self.value.split(".")[0]
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return self.value.split(".")[0]
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# Define function __str__
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def __str__(self) -> str:
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"""Return the string representation of the MITRE ID.
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Returns:
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str: The raw identifier string (e.g. ``"T1059.001"``).
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"""
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# Return self.value
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return self.value
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# Define function __eq__
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def __eq__(self, other: object) -> bool:
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"""Compare this MitreId to another MitreId or a plain string.
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Args:
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other (object): The value to compare against; may be a
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:class:`MitreId` instance or a plain ``str``.
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Returns:
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bool: True if the identifiers are equal, NotImplemented for
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unsupported types.
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"""
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# Check: isinstance(other, MitreId)
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if isinstance(other, MitreId):
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# Return self.value == other.value
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return self.value == other.value
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# Check: isinstance(other, str)
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if isinstance(other, str):
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# Return self.value == other
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return self.value == other
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# Return NotImplemented
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return NotImplemented
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# Define function __hash__
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def __hash__(self) -> int:
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"""Return the hash of the identifier string.
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Returns:
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int: Hash value derived from the raw identifier string.
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"""
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# Return hash(self.value)
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return hash(self.value)
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