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`s/([^\(\s]+\.)len\(\) [(?:!=)>] 0/!$1is_empty()/g`
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`s/(?<!\{ self)(?<=\.)len\(\) == 0/is_empty()/g`
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The set of types which can have an inherent impl changed slightly and rustdoc
just needed to catch up to understand what it means to see a `impl str`!
Closes #23511
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This ends up causing duplicate output in rustdoc. The source of these duplicates
is that the item is defined in both resolve namespaces, so it's listed twice.
Closes #23207
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This commit ensures that the ABI of functions is propagated all the way through
to the documentation.
Closes #22038
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This change is aimed at improving cross-crate (inlined) notation of generic
closures. The change modifies `simplify::where_predicates` to handle
parenthesized notation as well as starting to handle supertrait bounds as well.
This was necessary because all output constraints of closures are bound to
`FnOnce` but most trait bounds are that of `FnMut`.
Close #21801
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Closes #23864
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* All bounds are now discovered through the trait to be inlined.
* The `?Sized` bound now renders correctly for inlined associated types.
* All `QPath`s (`<A as B>::C`) instances are rendered as `A::C` where `C` is a
hyperlink to the trait `B`. This should improve at least how the docs look at
least.
* Supertrait bounds are now separated and display as the source lists them.
Closes #20727
Closes #21145
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Add a custom module to rustdoc which simplifies the output of `middle::ty` into
a more readable form which tends to be written down anyway!
Closes #20646
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This adds support in rustdoc to blanket apply crate attributes to all doc tests
for a crate at once. The syntax for doing this is:
#![doc(test(attr(...)))]
Each meta item in `...` will be applied to each doctest as a crate attribute.
cc #18199
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Closes #15318
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This ensures that all external traits are run through the same filters that the
rest of the AST goes through, stripping hidden function as necessary.
Closes #13698
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Now that support has been removed, all lingering use cases are renamed.
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Previously, impls for `[T; n]` were collected in the same place as impls for `[T]` and `&[T]`. This splits them out into their own primitive page in both core and std.
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This commit:
* Introduces `std::convert`, providing an implementation of
RFC 529.
* Deprecates the `AsPath`, `AsOsStr`, and `IntoBytes` traits, all
in favor of the corresponding generic conversion traits.
Consequently, various IO APIs now take `AsRef<Path>` rather than
`AsPath`, and so on. Since the types provided by `std` implement both
traits, this should cause relatively little breakage.
* Deprecates many `from_foo` constructors in favor of `from`.
* Changes `PathBuf::new` to take no argument (creating an empty buffer,
as per convention). The previous behavior is now available as
`PathBuf::from`.
* De-stabilizes `IntoCow`. It's not clear whether we need this separate trait.
Closes #22751
Closes #14433
[breaking-change]
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Impls on `clean::Type::FixedVector` are now collected in the array
primitive page instead of the slice primitive page.
Also add a primitive docs for arrays to `std`.
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This adds a special code path for impls which are listed as default impls to
ensure that they're loaded correctly.
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into MethodTraitItem.
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The main gist of this PR is commit 1077efb which removes the list of supertraits from the `TraitDef` and pulls them into a separate table, which is accessed via `lookup_super_predicates`. This is analogous to `lookup_predicates`, which gets the complete where clause. This allows us to create the `TraitDef`, which contains the list generics and so forth, without fully knowing the list of supertraits. This in turn allows the *supertrait listing* to contain references to associated types like `<Self as Foo>::Item`, which were previously impossible because conversion required having the `TraitDef` for `Foo`.
We do not yet support `Self::Item` in a supertrait listing. This doesn't work because to convert that, it attempts to expand out the full set of supertraits, which are in the process of being created. This could potentially be worked out by having the expansion of supertraits proceed in a lazy fashion, but we'd have to define shadowing rules for associated types which we don't currently have.
Along the way (in 9de9ec5) I also removed the restriction against duplicate bounds and generalized the code so that it can handle having the same supertrait multiple times with different arguments, e.g. `Foo : Bar<i32> + Bar<u32>`. This restriction was serving no particular purpose, since the same trait could be extended multiple times indirectly, and in the era of multidispatch it is actively harmful.
This is technically a [breaking-change] because it affects the definition of a super-trait. Anything in a where clause that looks like `where Self : Foo` is now considered a supertrait. Because cycles are disallowed in supertraits, that could lead to some errors. This has not been observed in any existing code.
r? @nrc
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This commit deprecates the majority of std::old_io::fs in favor of std::fs and
its new functionality. Some functions remain non-deprecated but are now behind a
feature gate called `old_fs`. These functions will be deprecated once
suitable replacements have been implemented.
The compiler has been migrated to new `std::fs` and `std::path` APIs where
appropriate as part of this change.
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us to construct trait-references and do other things without forcing a
full evaluation of the supertraits. One downside of this scheme is that
we must invoke `ensure_super_predicates` before using any construct that
might require knowing about the super-predicates.
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rustdoc impl item did not include default methods for local crates, but did include them for external crates. This resulted in duplicate methods. Fix so that impl item does not include default methods for external crates.
Fix #22595.
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exclusively stored in the where clauses.
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This is one more step towards completing #13231
This series of commits add support for default trait implementations. The changes in this PR don't break existing code and they are expected to preserve the existing behavior in the compiler as far as built-in bounds checks go.
The PR adds negative implementations of `Send`/`Sync` for some types and it removes the special cases for `Send`/`Sync` during the trait obligations checks. That is, it now fully relies on the traits check rather than lang items.
Once this patch lands and a new snapshot is created, it'll be possible to add default impls for `Send` and `Sync` and remove entirely the use of `BuiltinBound::{BoundSend,BoundSync}` for positive implementations as well.
This PR also removes the restriction on negative implementations. That is, it is now possible to add negative implementations for traits other than `Send`/`Sync`
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where possible.
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Since we don’t have Deprecated stability level anymore, the only other source of information is
deprecated-since version, which conveniently to us, only exists if the symbol is deprecated.
Fixes #21789
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predicates and renaming some things.
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r? @alexcrichton
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It's in order to make the code more homogeneous.
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Fixes run build error
Fix test failure
Fix tests' errors
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Fix #21621
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This can be considered partial work on #8256.
The main observable change: macro expansion sometimes results in spans
where `lo > hi`; so for now, when we have such a span, do not attempt
to return a snippet result.
(Longer term, we might think about whether we could still present a
snippet for the cases where this arises, e.g. perhaps by showing the
whole macro as the snippet, assuming that is the sole cause of such
spans; or by somehow looking up the closest AST node that holds both
`lo` and `hi`, and showing that.)
As a drive-by, revised the API to return a `Result` rather than an
`Option`, with better information-packed error value that should help
us (and maybe also our users) identify the causes of such problems in
the future. Ideally the call-sites that really want an actual snippet
would be updated to catch the newly added `Err` case and print
something meaningful about it, but that is not part of this PR.
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As part of [RFC 474](https://github.com/rust-lang/rfcs/pull/474), this
commit renames `std::path` to `std::old_path`, leaving the existing path
API in place to ease migration to the new one. Updating should be as
simple as adjusting imports, and the prelude still maps to the old path
APIs for now.
[breaking-change]
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Also `for x in option.iter_mut()` -> `if let Some(ref mut x) = option`
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