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macro_input_callback

hir_expand::cfg_process

Function macro_input_callback 

Source 
fn macro_input_callback(
    db: &dyn SourceDatabase,
    is_derive: bool,
    censor_item_tree_attr_ids: &[AttrId],
    krate: Crate,
    default_span: Span,
    span_map: SpanMap<'_>,
) -> impl FnMut(&mut PreorderWithTokens, &WalkEvent<SyntaxElement>) -> (bool, Vec<Leaf>)