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data_structures: remove tuple_slice

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This commit is contained in:
ljedrz 2018-12-03 17:33:06 +01:00
parent a563ceb3b9
commit 651373c13d
2 changed files with 0 additions and 71 deletions
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1
src/librustc_data_structures/lib.rs
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@ -81,7 +81,6 @@ pub mod sync;
pub mod tiny_list;
pub mod thin_vec;
pub mod transitive_relation;
pub mod tuple_slice;
pub use ena::unify;
pub mod vec_linked_list;
pub mod work_queue;

70
src/librustc_data_structures/tuple_slice.rs
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@ -1,70 +0,0 @@
// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// 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 std::slice;
/// Allows to view uniform tuples as slices
pub trait TupleSlice<T> {
fn as_slice(&self) -> &[T];
fn as_mut_slice(&mut self) -> &mut [T];
}
macro_rules! impl_tuple_slice {
($tuple_type:ty, $size:expr) => {
impl<T> TupleSlice<T> for $tuple_type {
fn as_slice(&self) -> &[T] {
unsafe {
let ptr = &self.0 as *const T;
slice::from_raw_parts(ptr, $size)
}
}
fn as_mut_slice(&mut self) -> &mut [T] {
unsafe {
let ptr = &mut self.0 as *mut T;
slice::from_raw_parts_mut(ptr, $size)
}
}
}
}
}
impl_tuple_slice!((T, T), 2);
impl_tuple_slice!((T, T, T), 3);
impl_tuple_slice!((T, T, T, T), 4);
impl_tuple_slice!((T, T, T, T, T), 5);
impl_tuple_slice!((T, T, T, T, T, T), 6);
impl_tuple_slice!((T, T, T, T, T, T, T), 7);
impl_tuple_slice!((T, T, T, T, T, T, T, T), 8);
#[test]
fn test_sliced_tuples() {
let t2 = (100, 101);
assert_eq!(t2.as_slice(), &[100, 101]);
let t3 = (102, 103, 104);
assert_eq!(t3.as_slice(), &[102, 103, 104]);
let t4 = (105, 106, 107, 108);
assert_eq!(t4.as_slice(), &[105, 106, 107, 108]);
let t5 = (109, 110, 111, 112, 113);
assert_eq!(t5.as_slice(), &[109, 110, 111, 112, 113]);
let t6 = (114, 115, 116, 117, 118, 119);
assert_eq!(t6.as_slice(), &[114, 115, 116, 117, 118, 119]);
let t7 = (120, 121, 122, 123, 124, 125, 126);
assert_eq!(t7.as_slice(), &[120, 121, 122, 123, 124, 125, 126]);
let t8 = (127, 128, 129, 130, 131, 132, 133, 134);
assert_eq!(t8.as_slice(), &[127, 128, 129, 130, 131, 132, 133, 134]);
}