39 lines
1.3 KiB
Rust
39 lines
1.3 KiB
Rust
// Copyright 2014-2016 bluss and ndarray developers.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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use crate::imp_prelude::*;
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use crate::RawDataClone;
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impl<S: RawDataClone, D: Clone> Clone for ArrayBase<S, D> {
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fn clone(&self) -> ArrayBase<S, D> {
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// safe because `clone_with_ptr` promises to provide equivalent data and ptr
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unsafe {
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let (data, ptr) = self.data.clone_with_ptr(self.ptr);
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ArrayBase {
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data,
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ptr,
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dim: self.dim.clone(),
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strides: self.strides.clone(),
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}
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}
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}
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/// `Array` implements `.clone_from()` to reuse an array's existing
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/// allocation. Semantically equivalent to `*self = other.clone()`, but
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/// potentially more efficient.
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fn clone_from(&mut self, other: &Self) {
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unsafe {
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self.ptr = self.data.clone_from_with_ptr(&other.data, other.ptr);
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self.dim.clone_from(&other.dim);
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self.strides.clone_from(&other.strides);
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}
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}
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}
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impl<S: RawDataClone + Copy, D: Copy> Copy for ArrayBase<S, D> {}
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