Function check_for_errors

marimo/_lint/validate_graph.py:19–47

Check graph for violations of marimo semantics. Return a dict of errors in the graph, with an entry for each cell that is involved in an error.

(
    graph: DirectedGraph,
)

def check_for_errors(
    graph: DirectedGraph,
) -> dict[CellId_t, tuple[Error, ...]]:
    """
    Check graph for violations of marimo semantics.

    Return a dict of errors in the graph, with an entry for each cell
    that is involved in an error.
    """
    multiple_definition_errors = check_for_multiple_definitions(graph)
    cycle_errors = check_for_cycles(graph)
    invalid_root_errors = check_for_invalid_root(graph)

    errors: dict[CellId_t, tuple[Error, ...]] = {}
    for cid in set(
        itertools.chain(
            multiple_definition_errors.keys(),
            cycle_errors.keys(),
            invalid_root_errors.keys(),
        )
    ):
        errors[cid] = tuple(
            itertools.chain(
                multiple_definition_errors[cid],
                cycle_errors[cid],
                invalid_root_errors[cid],
            )
        )
    return errors


def check_for_multiple_definitions(