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rust/src/libstd/prelude/v1.rs

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std: Stabilize the prelude module This commit is an implementation of [RFC 503][rfc] which is a stabilization story for the prelude. Most of the RFC was directly applied, removing reexports. Some reexports are kept around, however: * `range` remains until range syntax has landed to reduce churn. * `Path` and `GenericPath` remain until path reform lands. This is done to prevent many imports of `GenericPath` which will soon be removed. * All `io` traits remain until I/O reform lands so imports can be rewritten all at once to `std::io::prelude::*`. This is a breaking change because many prelude reexports have been removed, and the RFC can be consulted for the exact list of removed reexports, as well as to find the locations of where to import them. [rfc]: https://github.com/rust-lang/rfcs/blob/master/text/0503-prelude-stabilization.md [breaking-change] Closes #20068
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// Copyright 2013 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.
//! The first version of the prelude of the standard library.
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#![stable(feature = "rust1", since = "1.0.0")]
std: Stabilize the prelude module This commit is an implementation of [RFC 503][rfc] which is a stabilization story for the prelude. Most of the RFC was directly applied, removing reexports. Some reexports are kept around, however: * `range` remains until range syntax has landed to reduce churn. * `Path` and `GenericPath` remain until path reform lands. This is done to prevent many imports of `GenericPath` which will soon be removed. * All `io` traits remain until I/O reform lands so imports can be rewritten all at once to `std::io::prelude::*`. This is a breaking change because many prelude reexports have been removed, and the RFC can be consulted for the exact list of removed reexports, as well as to find the locations of where to import them. [rfc]: https://github.com/rust-lang/rfcs/blob/master/text/0503-prelude-stabilization.md [breaking-change] Closes #20068
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// Reexported core operators
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#[stable(feature = "rust1", since = "1.0.0")]
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#[doc(no_inline)] pub use marker::{Copy, Send, Sized, Sync};
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#[stable(feature = "rust1", since = "1.0.0")]
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#[doc(no_inline)] pub use ops::{Drop, Fn, FnMut, FnOnce};
Test fixes and rebase conflicts
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std: Stabilize the prelude module This commit is an implementation of [RFC 503][rfc] which is a stabilization story for the prelude. Most of the RFC was directly applied, removing reexports. Some reexports are kept around, however: * `range` remains until range syntax has landed to reduce churn. * `Path` and `GenericPath` remain until path reform lands. This is done to prevent many imports of `GenericPath` which will soon be removed. * All `io` traits remain until I/O reform lands so imports can be rewritten all at once to `std::io::prelude::*`. This is a breaking change because many prelude reexports have been removed, and the RFC can be consulted for the exact list of removed reexports, as well as to find the locations of where to import them. [rfc]: https://github.com/rust-lang/rfcs/blob/master/text/0503-prelude-stabilization.md [breaking-change] Closes #20068
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// Reexported functions
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#[stable(feature = "rust1", since = "1.0.0")]
Add 'feature' and 'since' to stability attributes
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#[doc(no_inline)] pub use mem::drop;
std: Stabilize the prelude module This commit is an implementation of [RFC 503][rfc] which is a stabilization story for the prelude. Most of the RFC was directly applied, removing reexports. Some reexports are kept around, however: * `range` remains until range syntax has landed to reduce churn. * `Path` and `GenericPath` remain until path reform lands. This is done to prevent many imports of `GenericPath` which will soon be removed. * All `io` traits remain until I/O reform lands so imports can be rewritten all at once to `std::io::prelude::*`. This is a breaking change because many prelude reexports have been removed, and the RFC can be consulted for the exact list of removed reexports, as well as to find the locations of where to import them. [rfc]: https://github.com/rust-lang/rfcs/blob/master/text/0503-prelude-stabilization.md [breaking-change] Closes #20068
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// Reexported types and traits
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#[stable(feature = "rust1", since = "1.0.0")]
Add 'feature' and 'since' to stability attributes
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#[doc(no_inline)] pub use boxed::Box;
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#[stable(feature = "rust1", since = "1.0.0")]
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#[doc(no_inline)] pub use clone::Clone;
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#[stable(feature = "rust1", since = "1.0.0")]
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#[doc(no_inline)] pub use cmp::{PartialEq, PartialOrd, Eq, Ord};
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#[stable(feature = "rust1", since = "1.0.0")]
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#[doc(no_inline)] pub use iter::DoubleEndedIterator;
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#[stable(feature = "rust1", since = "1.0.0")]
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#[doc(no_inline)] pub use iter::ExactSizeIterator;
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#[stable(feature = "rust1", since = "1.0.0")]
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#[doc(no_inline)] pub use iter::{Iterator, IteratorExt, Extend};
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#[stable(feature = "rust1", since = "1.0.0")]
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#[doc(no_inline)] pub use option::Option::{self, Some, None};
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#[stable(feature = "rust1", since = "1.0.0")]
Add 'feature' and 'since' to stability attributes
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#[doc(no_inline)] pub use result::Result::{self, Ok, Err};
impl<T> [T]
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#[stable(feature = "rust1", since = "1.0.0")]
#[doc(no_inline)] pub use slice::{SliceConcatExt, AsSlice};
impl str
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#[stable(feature = "rust1", since = "1.0.0")]
#[doc(no_inline)] pub use str::Str;
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#[stable(feature = "rust1", since = "1.0.0")]
Add 'feature' and 'since' to stability attributes
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#[doc(no_inline)] pub use string::{String, ToString};
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#[stable(feature = "rust1", since = "1.0.0")]
Add 'feature' and 'since' to stability attributes
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#[doc(no_inline)] pub use vec::Vec;
std: Stabilize the prelude module This commit is an implementation of [RFC 503][rfc] which is a stabilization story for the prelude. Most of the RFC was directly applied, removing reexports. Some reexports are kept around, however: * `range` remains until range syntax has landed to reduce churn. * `Path` and `GenericPath` remain until path reform lands. This is done to prevent many imports of `GenericPath` which will soon be removed. * All `io` traits remain until I/O reform lands so imports can be rewritten all at once to `std::io::prelude::*`. This is a breaking change because many prelude reexports have been removed, and the RFC can be consulted for the exact list of removed reexports, as well as to find the locations of where to import them. [rfc]: https://github.com/rust-lang/rfcs/blob/master/text/0503-prelude-stabilization.md [breaking-change] Closes #20068
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std: Remove old_io/old_path from the prelude This commit removes the reexports of `old_io` traits as well as `old_path` types and traits from the prelude. This functionality is now all deprecated and needs to be removed to make way for other functionality like `Seek` in the `std::io` module (currently reexported as `NewSeek` in the io prelude). Closes #23377 Closes #23378
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// FIXME(#23454) should these be here?
Add `core::num::wrapping` and fix overflow errors. Many of the core rust libraries have places that rely on integer wrapping behaviour. These places have been altered to use the wrapping_* methods: * core::hash::sip - A number of macros * core::str - The `maximal_suffix` method in `TwoWaySearcher` * rustc::util::nodemap - Implementation of FnvHash * rustc_back::sha2 - A number of macros and other places * rand::isaac - Isaac64Rng, changed to use the Wrapping helper type Some places had "benign" underflow. This is when underflow or overflow occurs, but the unspecified value is not used due to other conditions. * collections::bit::Bitv - underflow when `self.nbits` is zero. * collections::hash::{map,table} - Underflow when searching an empty table. Did cause undefined behaviour in this case due to an out-of-bounds ptr::offset based on the underflowed index. However the resulting pointers would never be read from. * syntax::ext::deriving::encodable - Underflow when calculating the index of the last field in a variant with no fields. These cases were altered to avoid the underflow, often by moving the underflowing operation to a place where underflow could not happen. There was one case that relied on the fact that unsigned arithmetic and two's complement arithmetic are identical with wrapping semantics. This was changed to use the wrapping_* methods. Finally, the calculation of variant discriminants could overflow if the preceeding discriminant was `U64_MAX`. The logic in `rustc::middle::ty` for this was altered to avoid the overflow completely, while the remaining places were changed to use wrapping methods. This is because `rustc::middle::ty::enum_variants` now throws an error when the calculated discriminant value overflows a `u64`. This behaviour can be triggered by the following code: ``` enum Foo { A = U64_MAX, B } ``` This commit also implements the remaining integer operators for Wrapped<T>.
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#[doc(no_inline)] pub use num::wrapping::{Wrapping, WrappingOps};
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