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path: root/src/libstd/io/cursor.rs
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2019-03-14Overwrite Cursor's `Seek::stream_{len, position}` for performanceLukas Kalbertodt-0/+8
2019-02-28libstd => 2018Taiki Endo-5/+6
2019-02-26Auto merge of #58357 - sfackler:vectored-io, r=alexcrichtonbors-5/+210
Add vectored read and write support This functionality has lived for a while in the tokio ecosystem, where it can improve performance by minimizing copies. r? @alexcrichton
2019-02-17Use more impl header lifetime elisionScott McMurray-2/+2
There are two big categories of changes in here - Removing lifetimes from common traits that can essentially never user a lifetime from an input (particularly `Drop` & `Debug`) - Forwarding impls that are only possible because the lifetime doesn't matter (like `impl<R: Read + ?Sized> Read for &mut R`) I omitted things that seemed like they could be more controversial, like the handful of iterators that have a `Item: 'static` despite the iterator having a lifetime or the `PartialEq` implementations where the flipped one cannot elide the lifetime.
2019-02-13impl Deref/DerefMut for IoVec typesSteven Fackler-3/+1
Returning &'a mut [u8] was unsound, and we may as well just have them directly deref to their slices to make it easier to work with them.
2019-02-13Add vectored read and write supportSteven Fackler-5/+212
This functionality has lived for a while in the tokio ecosystem, where it can improve performance by minimizing copies.
2018-12-25Remove licensesMark Rousskov-10/+0
2018-12-07Various minor/cosmetic improvements to codeAlexander Regueiro-1/+1
2018-07-30Remove unstable and deprecated APIsSimon Sapin-20/+0
2018-07-19Cursor: update docs to clarify Cursor only works with in-memory buffersTommi Komulainen-8/+9
Reduce misconceptions about Cursor being more general than it really is. Fixes: #52470
2018-06-06Revert "Remove TryFrom impls that might become conditionally-infallible with ↵Simon Sapin-18/+2
a portability lint" This reverts commit 837d6c70233715a0ae8e15c703d40e3046a2f36a. Fixes https://github.com/rust-lang/rust/issues/49415
2018-04-15Deprecate Read::chars and char::decode_utf8Simon Sapin-0/+2
Per FCP: * https://github.com/rust-lang/rust/issues/27802#issuecomment-377537778 * https://github.com/rust-lang/rust/issues/33906#issuecomment-377534308
2018-03-27Remove TryFrom impls that might become conditionally-infallible with a ↵Simon Sapin-2/+18
portability lint https://github.com/rust-lang/rust/pull/49305#issuecomment-376293243
2018-02-10Correct a few stability attributesOliver Middleton-1/+1
2017-12-18Implement `Write` for `Cursor<&mut Vec<T>>`Diggory Blake-32/+58
2017-12-03Add a specialization of read_exact for Cursor.Kyle Huey-0/+25
The read_exact implementation for &[u8] is optimized and usually allows LLVM to reduce a read_exact call for small numbers of bytes to a bounds check and a register load instead of a generic memcpy. On a workload I have that decompresses, deserializes (via bincode), and processes some data, this leads to a 40% speedup by essentially eliminating the deserialization overhead entirely.
2017-08-17Fix typo in docadrian5-1/+1
2017-08-02Fixed errors in libstd.Isaac van Bakel-1/+1
2017-06-20Add `Read::initializer`.Steven Fackler-1/+6
This is an API that allows types to indicate that they can be passed buffers of uninitialized memory which can improve performance.
2017-03-24Document Cursor::new position is 0Stepan Koltsov-0/+4
... even if contained `Vec` is not empty. E. g. for ``` let v = vec![10u8, 20]; let mut c = io::Cursor::new(v); c.write_all(b"aaaa").unwrap(); println!("{:?}", c.into_inner()); ``` result is ``` [97, 97, 97, 97] ``` and not ``` [10, 20, 97, 97, 97, 97] ```
2017-02-16std::io::cursor: Fixed Seek so test passes.Amos Onn-10/+12
2017-02-16std::io::cursor Added test for seeking beyond i64.Amos Onn-0/+37
2017-01-22libstd: replace all `try!` with `?` in documentation examplesUtkarsh Kukreti-4/+4
See #38644.
2016-11-01Rollup merge of #37316 - ollie27:docs_links, r=GuillaumeGomezGuillaume Gomez-2/+2
Fix a few links in the docs r? @steveklabnik
2016-10-31Changed most vec! invocations to use square bracesiirelu-6/+6
Most of the Rust community agrees that the vec! macro is clearer when called using square brackets [] instead of regular brackets (). Most of these ocurrences are from before macros allowed using different types of brackets. There is one left unchanged in a pretty-print test, as the pretty printer still wants it to have regular brackets.
2016-10-21Fix a few links in the docsOliver Middleton-2/+2
2016-10-14Add missing urls for io typesGuillaume Gomez-6/+12
2016-10-03Check for overflow in Cursor<Vec<u8>>::write.Tomasz Miąsko-7/+18
Ensure that cursor position fits into usize, before proceeding with write. Fixes issue #36884.
2016-08-24Use `#[prelude_import]` in `libstd`.Jeffrey Seyfried-2/+0
2016-05-27Inline simple Cursor write callsJamey Sharp-0/+2
Implementing the Write trait for Cursors over slices is so light-weight that under some circumstances multiple writes can be fused into a single instruction. In general I think inlining these functions is a good idea because most of the code can be constant-folded and copy-propagated away. Closes issue #33916.
2016-03-22try! -> ?Jorge Aparicio-3/+3
Automated conversion using the untry tool [1] and the following command: ``` $ find -name '*.rs' -type f | xargs untry ``` at the root of the Rust repo. [1]: https://github.com/japaric/untry
2016-02-26Use .copy_from_slice() where applicableUlrik Sverdrup-1/+1
.copy_from_slice() does the same job of .clone_from_slice(), but the former is explicitly for Copy elements and calls `memcpy` directly, and thus is it efficient without optimization too.
2016-01-16std: Stabilize APIs for the 1.7 releaseAlex Crichton-4/+7
This commit stabilizes and deprecates the FCP (final comment period) APIs for the upcoming 1.7 beta release. The specific APIs which changed were: Stabilized * `Path::strip_prefix` (renamed from `relative_from`) * `path::StripPrefixError` (new error type returned from `strip_prefix`) * `Ipv4Addr::is_loopback` * `Ipv4Addr::is_private` * `Ipv4Addr::is_link_local` * `Ipv4Addr::is_multicast` * `Ipv4Addr::is_broadcast` * `Ipv4Addr::is_documentation` * `Ipv6Addr::is_unspecified` * `Ipv6Addr::is_loopback` * `Ipv6Addr::is_unique_local` * `Ipv6Addr::is_multicast` * `Vec::as_slice` * `Vec::as_mut_slice` * `String::as_str` * `String::as_mut_str` * `<[T]>::clone_from_slice` - the `usize` return value is removed * `<[T]>::sort_by_key` * `i32::checked_rem` (and other signed types) * `i32::checked_neg` (and other signed types) * `i32::checked_shl` (and other signed types) * `i32::checked_shr` (and other signed types) * `i32::saturating_mul` (and other signed types) * `i32::overflowing_add` (and other signed types) * `i32::overflowing_sub` (and other signed types) * `i32::overflowing_mul` (and other signed types) * `i32::overflowing_div` (and other signed types) * `i32::overflowing_rem` (and other signed types) * `i32::overflowing_neg` (and other signed types) * `i32::overflowing_shl` (and other signed types) * `i32::overflowing_shr` (and other signed types) * `u32::checked_rem` (and other unsigned types) * `u32::checked_neg` (and other unsigned types) * `u32::checked_shl` (and other unsigned types) * `u32::saturating_mul` (and other unsigned types) * `u32::overflowing_add` (and other unsigned types) * `u32::overflowing_sub` (and other unsigned types) * `u32::overflowing_mul` (and other unsigned types) * `u32::overflowing_div` (and other unsigned types) * `u32::overflowing_rem` (and other unsigned types) * `u32::overflowing_neg` (and other unsigned types) * `u32::overflowing_shl` (and other unsigned types) * `u32::overflowing_shr` (and other unsigned types) * `ffi::IntoStringError` * `CString::into_string` * `CString::into_bytes` * `CString::into_bytes_with_nul` * `From<CString> for Vec<u8>` * `From<CString> for Vec<u8>` * `IntoStringError::into_cstring` * `IntoStringError::utf8_error` * `Error for IntoStringError` Deprecated * `Path::relative_from` - renamed to `strip_prefix` * `Path::prefix` - use `components().next()` instead * `os::unix::fs` constants - moved to the `libc` crate * `fmt::{radix, Radix, RadixFmt}` - not used enough to stabilize * `IntoCow` - conflicts with `Into` and may come back later * `i32::{BITS, BYTES}` (and other integers) - not pulling their weight * `DebugTuple::formatter` - will be removed * `sync::Semaphore` - not used enough and confused with system semaphores Closes #23284 cc #27709 (still lots more methods though) Closes #27712 Closes #27722 Closes #27728 Closes #27735 Closes #27729 Closes #27755 Closes #27782 Closes #27798
2015-12-05std: Stabilize APIs for the 1.6 releaseAlex Crichton-3/+2
This commit is the standard API stabilization commit for the 1.6 release cycle. The list of issues and APIs below have all been through their cycle-long FCP and the libs team decisions are listed below Stabilized APIs * `Read::read_exact` * `ErrorKind::UnexpectedEof` (renamed from `UnexpectedEOF`) * libcore -- this was a bit of a nuanced stabilization, the crate itself is now marked as `#[stable]` and the methods appearing via traits for primitives like `char` and `str` are now also marked as stable. Note that the extension traits themeselves are marked as unstable as they're imported via the prelude. The `try!` macro was also moved from the standard library into libcore to have the same interface. Otherwise the functions all have copied stability from the standard library now. * The `#![no_std]` attribute * `fs::DirBuilder` * `fs::DirBuilder::new` * `fs::DirBuilder::recursive` * `fs::DirBuilder::create` * `os::unix::fs::DirBuilderExt` * `os::unix::fs::DirBuilderExt::mode` * `vec::Drain` * `vec::Vec::drain` * `string::Drain` * `string::String::drain` * `vec_deque::Drain` * `vec_deque::VecDeque::drain` * `collections::hash_map::Drain` * `collections::hash_map::HashMap::drain` * `collections::hash_set::Drain` * `collections::hash_set::HashSet::drain` * `collections::binary_heap::Drain` * `collections::binary_heap::BinaryHeap::drain` * `Vec::extend_from_slice` (renamed from `push_all`) * `Mutex::get_mut` * `Mutex::into_inner` * `RwLock::get_mut` * `RwLock::into_inner` * `Iterator::min_by_key` (renamed from `min_by`) * `Iterator::max_by_key` (renamed from `max_by`) Deprecated APIs * `ErrorKind::UnexpectedEOF` (renamed to `UnexpectedEof`) * `OsString::from_bytes` * `OsStr::to_cstring` * `OsStr::to_bytes` * `fs::walk_dir` and `fs::WalkDir` * `path::Components::peek` * `slice::bytes::MutableByteVector` * `slice::bytes::copy_memory` * `Vec::push_all` (renamed to `extend_from_slice`) * `Duration::span` * `IpAddr` * `SocketAddr::ip` * `Read::tee` * `io::Tee` * `Write::broadcast` * `io::Broadcast` * `Iterator::min_by` (renamed to `min_by_key`) * `Iterator::max_by` (renamed to `max_by_key`) * `net::lookup_addr` New APIs (still unstable) * `<[T]>::sort_by_key` (added to mirror `min_by_key`) Closes #27585 Closes #27704 Closes #27707 Closes #27710 Closes #27711 Closes #27727 Closes #27740 Closes #27744 Closes #27799 Closes #27801 cc #27801 (doesn't close as `Chars` is still unstable) Closes #28968
2015-10-21Fix doc sample for CursorWesley Wiser-1/+1
Fixes #29219
2015-10-09Implement Read, BufRead, Write and Seek for Cursor<Box<[u8]>>Steven Fackler-0/+57
2015-10-02Use generic trait implementations for Cursor when possible.nwin-49/+25
2015-08-11Register new snapshotsAlex Crichton-3/+0
* Lots of core prelude imports removed * Makefile support for MSVC env vars and Rust crates removed * Makefile support for morestack removed
2015-08-03syntax: Implement #![no_core]Alex Crichton-1/+2
This commit is an implementation of [RFC 1184][rfc] which tweaks the behavior of the `#![no_std]` attribute and adds a new `#![no_core]` attribute. The `#![no_std]` attribute now injects `extern crate core` at the top of the crate as well as the libcore prelude into all modules (in the same manner as the standard library's prelude). The `#![no_core]` attribute disables both std and core injection. [rfc]: https://github.com/rust-lang/rfcs/pull/1184
2015-07-28IO Docs: Fix Link in Cursor descriptionPascal Hertleif-4/+2
The first paragraph of the docs of the Cursor struct contains a Markdown link. In listings, this won't get rendered. (Rustdoc seems to split off the first paragraph and after that convert Markdown to HTML.)
2015-07-22Improve documentation for std::io::CursorSteve Klabnik-9/+140
Beef up the docs on the type, as well as adding examples for all methods.
2015-07-09io: Use Vec::resize in Cursor<Vec<u8>> for more efficient zero fillUlrik Sverdrup-2/+3
Vec::resize compiles to better code than .extend(repeat(0).take(n)) does right now.
2015-04-13pluralize doc comment verbs and add missing periodsAndrew Paseltiner-4/+4
2015-03-31Test fixes and rebase conflicts, round 3Alex Crichton-61/+61
2015-03-31rollup merge of #23919: alexcrichton/stabilize-io-errorAlex Crichton-2/+1
Conflicts: src/libstd/fs/tempdir.rs src/libstd/io/error.rs
2015-03-31std: Stabilize last bits of io::ErrorAlex Crichton-2/+1
This commit stabilizes a few remaining bits of the `io::Error` type: * The `Error::new` method is now stable. The last `detail` parameter was removed and the second `desc` parameter was generalized to `E: Into<Box<Error>>` to allow creating an I/O error from any form of error. Currently there is no form of downcasting, but this will be added in time. * An implementation of `From<&str> for Box<Error>` was added to liballoc to allow construction of errors from raw strings. * The `Error::raw_os_error` method was stabilized as-is. * Trait impls for `Clone`, `Eq`, and `PartialEq` were removed from `Error` as it is not possible to use them with trait objects. This is a breaking change due to the modification of the `new` method as well as the removal of the trait implementations for the `Error` type. [breaking-change]
2015-03-31std: Clean out #[deprecated] APIsAlex Crichton-4/+4
This commit cleans out a large amount of deprecated APIs from the standard library and some of the facade crates as well, updating all users in the compiler and in tests as it goes along.
2015-03-31Auto merge of #23549 - aturon:stab-num, r=alexcrichtonbors-1/+0
This commit stabilizes the `std::num` module: * The `Int` and `Float` traits are deprecated in favor of (1) the newly-added inherent methods and (2) the generic traits available in rust-lang/num. * The `Zero` and `One` traits are reintroduced in `std::num`, which together with various other traits allow you to recover the most common forms of generic programming. * The `FromStrRadix` trait, and associated free function, is deprecated in favor of inherent implementations. * A wide range of methods and constants for both integers and floating point numbers are now `#[stable]`, having been adjusted for integer guidelines. * `is_positive` and `is_negative` are renamed to `is_sign_positive` and `is_sign_negative`, in order to address #22985 * The `Wrapping` type is moved to `std::num` and stabilized; `WrappingOps` is deprecated in favor of inherent methods on the integer types, and direct implementation of operations on `Wrapping<X>` for each concrete integer type `X`. Closes #22985 Closes #21069 [breaking-change] r? @alexcrichton
2015-03-31Stabilize std::numAaron Turon-1/+0
This commit stabilizes the `std::num` module: * The `Int` and `Float` traits are deprecated in favor of (1) the newly-added inherent methods and (2) the generic traits available in rust-lang/num. * The `Zero` and `One` traits are reintroduced in `std::num`, which together with various other traits allow you to recover the most common forms of generic programming. * The `FromStrRadix` trait, and associated free function, is deprecated in favor of inherent implementations. * A wide range of methods and constants for both integers and floating point numbers are now `#[stable]`, having been adjusted for integer guidelines. * `is_positive` and `is_negative` are renamed to `is_sign_positive` and `is_sign_negative`, in order to address #22985 * The `Wrapping` type is moved to `std::num` and stabilized; `WrappingOps` is deprecated in favor of inherent methods on the integer types, and direct implementation of operations on `Wrapping<X>` for each concrete integer type `X`. Closes #22985 Closes #21069 [breaking-change]
2015-03-30std: Standardize (input, output) param orderingsAlex Crichton-1/+1
This functions swaps the order of arguments to a few functions that previously took (output, input) parameters, but now take (input, output) parameters (in that order). The affected functions are: * ptr::copy * ptr::copy_nonoverlapping * slice::bytes::copy_memory * intrinsics::copy * intrinsics::copy_nonoverlapping Closes #22890 [breaking-change]
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