Method simplify

datafusion/functions-nested/src/array_has.rs:127–179

(
        &self,
        mut args: Vec<Expr>,
        _info: &datafusion_expr::simplify::SimplifyContext,
    )

    }

    fn simplify(
        &self,
        mut args: Vec<Expr>,
        _info: &datafusion_expr::simplify::SimplifyContext,
    ) -> Result<ExprSimplifyResult> {
        let [haystack, needle] = take_function_args(self.name(), &mut args)?;

        // if the haystack is a constant list, we can use an inlist expression which is more
        // efficient because the haystack is not varying per-row
        match haystack {
            Expr::Literal(scalar, _) if scalar.is_null() => {
                return Ok(ExprSimplifyResult::Simplified(Expr::Literal(
                    ScalarValue::Boolean(None),
                    None,
                )));
            }
            Expr::Literal(
                // FixedSizeList gets coerced to List
                scalar @ ScalarValue::List(_) | scalar @ ScalarValue::LargeList(_),
                _,
            ) => {
                if let Ok(scalar_values) =
                    ScalarValue::convert_array_to_scalar_vec(&scalar.to_array()?)
                {
                    assert_eq!(scalar_values.len(), 1);
                    let list = scalar_values
                        .into_iter()
                        .flatten()
                        .flatten()
                        .map(|v| Expr::Literal(v, None))
                        .collect();

                    return Ok(ExprSimplifyResult::Simplified(in_list(
                        std::mem::take(needle),
                        list,
                        false,
                    )));
                }
            }
            Expr::ScalarFunction(ScalarFunction { func, args })
                if func == &make_array_udf() =>
            {
                // make_array has a static set of arguments, so we can pull the arguments out from it
                return Ok(ExprSimplifyResult::Simplified(in_list(
                    std::mem::take(needle),
                    std::mem::take(args),
                    false,
                )));
            }
            _ => {}
        };
        Ok(ExprSimplifyResult::Original(args))
    }

    fn invoke_with_args(&self, args: ScalarFunctionArgs) -> Result<ColumnarValue> {
        let [first_arg, second_arg] = take_function_args(self.name(), &args.args)?;