// Copyright 2017 bluss and ndarray developers.

//

// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or

// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license

// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your

// option. This file may not be copied, modified, or distributed

// except according to those terms.

use super::Layout;

const LAYOUT_NAMES: &[&str] = &["C", "F", "c", "f"];

use std::fmt;

impl fmt::Debug for Layout

{

    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result

    {

        if self.0 == 0 {

            write!(f, "Custom")?

        } else {

            (0..32).filter(|&i| self.is(1 << i)).try_fold((), |_, i| {

                if let Some(name) = LAYOUT_NAMES.get(i) {

                    write!(f, "{}", name)

                } else {

                    write!(f, "{:#x}", i)

                }

            })?;

        };

        write!(f, " ({:#x})", self.0)

    }

}