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All of the modules in the standard library were just straight reexports of those
in libcore, so remove all the "macro modules" from the standard library and just
reexport what's in core directly.
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* `core` - for the core crate
* `hash` - hashing
* `io` - io
* `path` - path
* `alloc` - alloc crate
* `rand` - rand crate
* `collections` - collections crate
* `std_misc` - other parts of std
* `test` - test crate
* `rustc_private` - everything else
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This gets rid of the 'experimental' level, removes the non-staged_api
case (i.e. stability levels for out-of-tree crates), and lets the
staged_api attributes use 'unstable' and 'deprecated' lints.
This makes the transition period to the full feature staging design
a bit nicer.
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In preparation for the rename.
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followed by a semicolon.
This allows code like `vec![1i, 2, 3].len();` to work.
This breaks code that uses macros as statements without putting
semicolons after them, such as:
fn main() {
...
assert!(a == b)
assert!(c == d)
println(...);
}
It also breaks code that uses macros as items without semicolons:
local_data_key!(foo)
fn main() {
println("hello world")
}
Add semicolons to fix this code. Those two examples can be fixed as
follows:
fn main() {
...
assert!(a == b);
assert!(c == d);
println(...);
}
local_data_key!(foo);
fn main() {
println("hello world")
}
RFC #378.
Closes #18635.
[breaking-change]
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Spring cleaning is here! In the Fall! This commit removes quite a large amount
of deprecated functionality from the standard libraries. I tried to ensure that
only old deprecated functionality was removed.
This is removing lots and lots of deprecated features, so this is a breaking
change. Please consult the deprecation messages of the deleted code to see how
to migrate code forward if it still needs migration.
[breaking-change]
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This reverts commit 40b9f5ded50ac4ce8c9323921ec556ad611af6b7.
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[breaking-change]
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Earlier commits have established a baseline of `experimental` stability
for all crates under the facade (so their contents are considered
experimental within libstd). Since `experimental` is `allow` by
default, we should use the same baseline stability for libstd itself.
This commit adds `experimental` tags to all of the modules defined in
`std`, and `unstable` to `std` itself.
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Closes #14482 (std: Bring back half of Add on String)
Closes #15026 (librustc: Remove the fallback to `int` from typechecking.)
Closes #15119 (Add more description to c_str::unwrap().)
Closes #15120 (Add tests for #12470 and #14285)
Closes #15122 (Remove the cheat sheet.)
Closes #15126 (rustc: Always include the morestack library)
Closes #15127 (Improve ambiguous pronoun.)
Closes #15130 (Fix #15129)
Closes #15131 (Add the Guide, add warning to tutorial.)
Closes #15134 (Xfailed tests for hygiene, etc.)
Closes #15135 (core: Add stability attributes to Clone)
Closes #15136 (Some minor improvements to core::bool)
Closes #15137 (std: Add stability attributes to primitive numeric modules)
Closes #15141 (Fix grammar in tutorial)
Closes #15143 (Remove few FIXMEs)
Closes #15145 (Avoid unnecessary temporary on assignments)
Closes #15147 (Small improvements for metaprogramming)
Closes #15153 (librustc: Check function argument patterns for legality of by-move)
Closes #15154 (test: Add a test for regions, traits, and variance.)
Closes #15159 (rustc: Don't register syntax crates twice)
Closes #13816 (Stabilize version output for rustc and rustdoc)
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The following are unstable:
- core::int, i8, i16, i32, i64
- core::uint, u8, u16, u32, u64
- core::int::{BITS, BYTES, MIN, MAX}, etc.
- std::int, i8, i16, i32, i64
- std::uint, u8, u16, u32, u64
The following are experimental:
- std::from_str::FromStr and impls - may need to return Result instead of Option
- std::int::parse_bytes, etc. - ditto
- std::num::FromStrRadix and impls - ditto
- std::num::from_str_radix - ditto
The following are deprecated:
- std::num::ToStrRadix and imples - Wrapper around fmt::radix. Wrong name (Str vs String)
See https://github.com/rust-lang/rust/wiki/Meeting-API-review-2014-06-23#uint
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This was only ever a transitionary macro.
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[breaking-change]
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[breaking-change]
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In an attempt to phase out the std::num::strconv module's string formatting
functionality, this commit reimplements some provided methods for formatting
integers on top of format!() instead of the custom (and slower) implementation
inside of num::strconv.
Primarily, this deprecates int_to_str_bytes_common
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API Changes:
- &[T] and ~[T] no longer support the addition operator (+)
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A few methods in slice that used to return ~[T] now return Vec<T>:
- VectorVector.concat/connect_vec() returns Vec<T>
- slice::unzip() returns (Vec<T>, Vec<U>)
- ImmutableCloneableVector.partitioned() returns (Vec<T>, Vec<T>)
- OwnedVector.partition() returns (Vec<T>, Vec<T>)
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This implements all traits inside of core::num for all the primitive types,
removing all the functionality from libstd. The std modules reexport all of the
necessary items from the core modules.
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in uint_macros.rs
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uint_macros.rs
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This removes all resizability support for ~[T] vectors in preparation of DST.
The only growable vector remaining is Vec<T>. In summary, the following methods
from ~[T] and various functions were removed. Each method/function has an
equivalent on the Vec type in std::vec unless otherwise stated.
* slice::OwnedCloneableVector
* slice::OwnedEqVector
* slice::append
* slice::append_one
* slice::build (no replacement)
* slice::bytes::push_bytes
* slice::from_elem
* slice::from_fn
* slice::with_capacity
* ~[T].capacity()
* ~[T].clear()
* ~[T].dedup()
* ~[T].extend()
* ~[T].grow()
* ~[T].grow_fn()
* ~[T].grow_set()
* ~[T].insert()
* ~[T].pop()
* ~[T].push()
* ~[T].push_all()
* ~[T].push_all_move()
* ~[T].remove()
* ~[T].reserve()
* ~[T].reserve_additional()
* ~[T].reserve_exect()
* ~[T].retain()
* ~[T].set_len()
* ~[T].shift()
* ~[T].shrink_to_fit()
* ~[T].swap_remove()
* ~[T].truncate()
* ~[T].unshift()
* ~str.clear()
* ~str.set_len()
* ~str.truncate()
Note that no other API changes were made. Existing apis that took or returned
~[T] continue to do so.
[breaking-change]
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Closes #2569
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This commit changes the ToStr trait to:
impl<T: fmt::Show> ToStr for T {
fn to_str(&self) -> ~str { format!("{}", *self) }
}
The ToStr trait has been on the chopping block for quite awhile now, and this is
the final nail in its coffin. The trait and the corresponding method are not
being removed as part of this commit, but rather any implementations of the
`ToStr` trait are being forbidden because of the generic impl. The new way to
get the `to_str()` method to work is to implement `fmt::Show`.
Formatting into a `&mut Writer` (as `format!` does) is much more efficient than
`ToStr` when building up large strings. The `ToStr` trait forces many
intermediate allocations to be made while the `fmt::Show` trait allows
incremental buildup in the same heap allocated buffer. Additionally, the
`fmt::Show` trait is much more extensible in terms of interoperation with other
`Writer` instances and in more situations. By design the `ToStr` trait requires
at least one allocation whereas the `fmt::Show` trait does not require any
allocations.
Closes #8242
Closes #9806
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This is PR is the beginning of a complete rewrite and ultimate removal of the `std::num::strconv` module (see #6220), and the removal of the `ToStrRadix` trait in favour of using the `std::fmt` functionality directly. This should make for a cleaner API, encourage less allocation, and make the implementation more comprehensible .
The `Formatter::{pad_integral, with_padding}` methods have also been refactored make things easier to understand.
The formatting tests for integers have been moved out of `run-pass/ifmt.rs` in order to provide more immediate feedback when building using `make check-stage2-std NO_REBUILD=1`.
Arbitrary radixes are now easier to use in format strings. For example:
~~~rust
assert_eq!(format!("{:04}", radix(3, 2)), ~"0011");
~~~
The benchmarks have been standardised between `std::num::strconv` and `std::num::fmt` to make it easier to compare the performance of the different implementations.
~~~
type | radix | std::num::strconv | std::num::fmt
======|=======|========================|======================
int | bin | 1748 ns/iter (+/- 150) | 321 ns/iter (+/- 25)
int | oct | 706 ns/iter (+/- 53) | 179 ns/iter (+/- 22)
int | dec | 640 ns/iter (+/- 59) | 207 ns/iter (+/- 10)
int | hex | 637 ns/iter (+/- 77) | 205 ns/iter (+/- 19)
int | 36 | 446 ns/iter (+/- 30) | 309 ns/iter (+/- 20)
------|-------|------------------------|----------------------
uint | bin | 1724 ns/iter (+/- 159) | 322 ns/iter (+/- 13)
uint | oct | 663 ns/iter (+/- 25) | 175 ns/iter (+/- 7)
uint | dec | 613 ns/iter (+/- 30) | 186 ns/iter (+/- 6)
uint | hex | 519 ns/iter (+/- 44) | 207 ns/iter (+/- 20)
uint | 36 | 418 ns/iter (+/- 16) | 308 ns/iter (+/- 32)
~~~
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This is in preparation to remove the implementations of ToStrRadix in integers, and to remove the associated logic from `std::num::strconv`.
The parts that still need to be liberated are:
- `std::fmt::Formatter::runplural`
- `num::{bigint, complex, rational}`
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Bitwise::count_zeros
These are inspired by the [functions in the Julia standard library](http://docs.julialang.org/en/release-0.2/stdlib/base/#Base.count_ones).
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Signed-off-by: OGINO Masanori <masanori.ogino@gmail.com>
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The following are renamed:
* `min_value` => `MIN`
* `max_value` => `MAX`
* `bits` => `BITS`
* `bytes` => `BYTES`
Fixes #10010.
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This removes the `Primitive::{bits, bytes, is_signed}` methods and removes the operator trait constraints, for the reasons outlined below:
- The `Primitive::{bits, bytes}` associated functions were originally added to reflect the existing `BITS` and `BYTES` statics included in the numeric modules. These statics are only exist as a workaround for Rust's lack of CTFE, and should probably be deprecated in the future in favor of using the `std::mem::size_of` function (see #11621).
- `Primitive::is_signed` seems to be of little utility and does not seem to be used anywhere in the Rust compiler or libraries. It is also rather ugly to call due to the `Option<Self>` workaround for #8888.
- The operator trait constraints are already covered by the `Num` trait.
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One less trait in `std::num` and three less exported in the prelude.
cc. #10387
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One less trait in std::num, and three less exported in the prelude.
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