Function iter_conjunction_owned

datafusion/expr/src/utils.rs:1068–1087

Iterate parts in a conjunctive [`Expr`] such as `A AND B AND C` => `[A, B, C]` See [`split_conjunction_owned`] for more details and an example.

(expr: Expr)

///
/// See [`split_conjunction_owned`] for more details and an example.
pub fn iter_conjunction_owned(expr: Expr) -> impl Iterator<Item = Expr> {
    let mut stack = vec![expr];
    std::iter::from_fn(move || {
        while let Some(expr) = stack.pop() {
            match expr {
                Expr::BinaryExpr(BinaryExpr {
                    right,
                    op: Operator::And,
                    left,
                }) => {
                    stack.push(*right);
                    stack.push(*left);
                }
                Expr::Alias(Alias { expr, .. }) => stack.push(*expr),
                other => return Some(other),
            }
        }
        None
    })
}

/// Splits an owned conjunctive [`Expr`] such as `A AND B AND C` => `[A, B, C]`
///