Function instance_to_source

src/utils/utils.py:258–345

Convert an instance to its class source code representation.

(instance, base_cls=None)

def instance_to_source(instance, base_cls=None):
    """Convert an instance to its class source code representation."""
    cls = instance.__class__
    class_name = cls.__name__

    # Start building class lines
    class_lines = []
    if base_cls:
        class_lines.append(f"class {class_name}({base_cls.__name__}):")
    else:
        class_lines.append(f"class {class_name}:")

    # Add docstring if it exists and differs from base
    if cls.__doc__ and (not base_cls or cls.__doc__ != base_cls.__doc__):
        class_lines.append(f'    """{cls.__doc__}"""')

    # Add class-level attributes
    class_attrs = {
        name: value
        for name, value in cls.__dict__.items()
        if not name.startswith("__")
        and not callable(value)
        and not (base_cls and hasattr(base_cls, name) and getattr(base_cls, name) == value)
    }

    for name, value in class_attrs.items():
        if isinstance(value, str):
            # multiline value
            if "\n" in value:
                escaped_value = value.replace('"""', r"\"\"\"")  # Escape triple quotes
                class_lines.append(f'    {name} = """{escaped_value}"""')
            else:
                class_lines.append(f"    {name} = {json.dumps(value)}")
        else:
            class_lines.append(f"    {name} = {repr(value)}")

    if class_attrs:
        class_lines.append("")

    # Add methods
    methods = {
        name: func.__wrapped__ if hasattr(func, "__wrapped__") else func
        for name, func in cls.__dict__.items()
        if callable(func)
        and (
            not base_cls
            or not hasattr(base_cls, name)
            or (
                isinstance(func, (staticmethod, classmethod))
                or (getattr(base_cls, name).__code__.co_code != func.__code__.co_code)
            )
        )
    }

    for name, method in methods.items():
        method_source = get_source(method)
        # Clean up the indentation
        method_lines = method_source.split("\n")