// Copyright 2014-2016 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 crate::imp_prelude::*;

use crate::ArrayPartsSized;

use crate::RawDataClone;

impl<S: RawDataClone, D: Clone> Clone for ArrayBase<S, D>

{

    fn clone(&self) -> ArrayBase<S, D>

    {

        // safe because `clone_with_ptr` promises to provide equivalent data and ptr

        unsafe {

            let (data, ptr) = self.data.clone_with_ptr(self.parts.ptr);

            ArrayBase {

                data,

                parts: ArrayPartsSized::new(ptr, self.parts.dim.clone(), self.parts.strides.clone()),

            }

        }

    }

    /// `Array` implements `.clone_from()` to reuse an array's existing

    /// allocation. Semantically equivalent to `*self = other.clone()`, but

    /// potentially more efficient.

    fn clone_from(&mut self, other: &Self)

    {

        unsafe {

            self.parts.ptr = self.data.clone_from_with_ptr(&other.data, other.parts.ptr);

            self.parts.dim.clone_from(&other.parts.dim);

            self.parts.strides.clone_from(&other.parts.strides);

        }

    }

}

impl<S: RawDataClone + Copy, D: Copy> Copy for ArrayBase<S, D> {}