Class PreferenceManager

core/preferences.py:224–538

Manages user preferences with automatic learning. Preferences are learned from: - Existing code in the project - User corrections and feedback - Repeated patterns in generated code Preferences are used to: - Generate code matching user style - Suggest appropriate t

class PreferenceManager:
    """
    Manages user preferences with automatic learning.

    Preferences are learned from:
    - Existing code in the project
    - User corrections and feedback
    - Repeated patterns in generated code

    Preferences are used to:
    - Generate code matching user style
    - Suggest appropriate tools and frameworks
    - Avoid style mismatches
    """

    # Preference categories and their weights
    CATEGORIES = {
        "test_framework":    {"weight": 1.0, "default": "pytest"},
        "code_style":        {"weight": 0.8, "default": "black"},
        "naming_convention": {"weight": 0.9, "default": "snake_case"},
        "import_style":      {"weight": 0.7, "default": "absolute"},
        "docstring_style":   {"weight": 0.6, "default": "google"},
        "error_handling":    {"weight": 0.8, "default": "explicit"},
        "type_hints":        {"weight": 0.8, "default": None},
        "async_style":       {"weight": 0.7, "default": None},
        "http_library":      {"weight": 0.9, "default": None},
        "cli_library":       {"weight": 0.9, "default": None},
        "log_style":         {"weight": 0.7, "default": None},
    }

    # Natural language patterns for extracting preferences from user messages.
    # Each entry: (regex, category, value_group_or_literal)
    # value_group_or_literal: int → capture group index; str → literal value
    NL_PATTERNS = [
        # "always use X" / "use X" / "prefer X" / "I like X"
        (r"(?:always use|prefer|use|i (?:prefer|like|want)|stick to)\s+(pytest|unittest)", "test_framework", 1),
        (r"(?:always use|prefer|use|i (?:prefer|like|want)|stick to)\s+(black|pep8|ruff)", "code_style", 1),
        (r"(?:always use|prefer|use|i (?:prefer|like|want)|stick to)\s+(httpx|requests|aiohttp|urllib)", "http_library", 1),
        (r"(?:always use|prefer|use|i (?:prefer|like|want)|stick to)\s+(click|argparse|typer)", "cli_library", 1),
        (r"(?:always use|prefer|use|i (?:prefer|like|want)|stick to)\s+(loguru|logging|rich)\s*(?:for\s*log(?:ging)?)?", "log_style", 1),
        # type hints
        (r"(?:always (?:add|use|include)|i (?:want|prefer|like))\s+type\s*hints?", "type_hints", "yes"),
        (r"(?:don'?t|no|skip|avoid)\s+type\s*hints?", "type_hints", "no"),
        # async
        (r"(?:always use|prefer|use|i (?:prefer|like|want))\s+async", "async_style", "async"),
        # docstrings
        (r"(?:always use|prefer|use|i (?:prefer|like|want)|stick to)\s+(google|numpy|sphinx|epytext)\s+docstrings?", "docstring_style", 1),
        # error handling
        (r"(?:always use|prefer|use|i (?:prefer|like|want)|stick to)\s+(explicit|try.except|raise)\s*(?:error\s*handling)?", "error_handling", 1),
        # naming
        (r"(?:always use|prefer|use|i (?:prefer|like|want)|stick to)\s+(snake_case|camelCase|PascalCase)\s*(?:naming)?", "naming_convention", 1),
        # "don't use X" → negative preference
        (r"(?:don'?t|do not|never|avoid)\s+use\s+(requests)\b", "http_library", "httpx"),
        (r"(?:don'?t|do not|never|avoid)\s+use\s+(argparse)\b", "cli_library", "click"),
        (r"(?:don'?t|do not|never|avoid)\s+use\s+print\b", "log_style", "logging"),
    ]

    def __init__(self):