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Stabilize `..` in tuple (struct) patterns
I'd like to nominate `..` in tuple and tuple struct patterns for stabilization.
This feature is a relatively small extension to existing stable functionality and doesn't have known blockers.
The feature first appeared in Rust 1.10 6 months ago.
An example of use: https://github.com/rust-lang/rust/pull/36203
Closes https://github.com/rust-lang/rust/issues/33627
r? @nikomatsakis
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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.
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Give variant spans used in derives the correct expansion id
This fixes a problem in save-analysis where it mistakes a path to a variant as the variant itself.
r? @petrochenkov
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This fixes a problem in save-analysis where it mistakes a path to a variant as the variant itself.
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Diagnostics for struct path resolution errors in resolve and typeck are unified.
Self type is treated as a type alias in few places (not reachable yet).
Unsafe cell is seen in constants even through type aliases.
All checks for struct paths in typeck work on type level.
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save_analysis: Dump data only if get_path_data doesn't fail to resolve a path.
Solves #37126
Dump data only if `get_path_data` doesn't fail to resolve a path.
`get_path_data` returns `None` when it have to deals with `Def::Err`, which is used as placeholder for a failed resolution.
Tell me if this is good enough, maybe I have to add some tests ?
r? @nrc
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Clarify the positions of the lexer and parser
The lexer and parser use unclear names to indicate their positions in the
source code. I propose the following renamings.
Lexer:
```
pos -> next_pos # it's actually the next pos!
last_pos -> pos # it's actually the current pos!
curr -> ch # the current char
curr_is -> ch_is # tests the current char
col (unchanged) # the current column
```
parser
```
- last_span -> prev_span # the previous token's span
- last_token_kind -> prev_token_kind # the previous token's kind
- LastTokenKind -> PrevTokenKind # ditto (but the type)
- token (unchanged) # the current token
- span (unchanged) # the current span
```
Things to note:
- This proposal removes all uses of "last", which is an unclear word because it
could mean (a) previous, (b) final, or (c) most recent, i.e. current.
- The "current" things (ch, col, token, span) consistently lack a prefix. The
"previous" and "next" things consistently have a prefix.
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Fixes #37126.
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This is a [breaking-change] for libsyntax.
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This commit is intended to be backported to the 1.13 branch, and works with the
following APIs:
Stabilized
* `i32::checked_abs`
* `i32::wrapping_abs`
* `i32::overflowing_abs`
* `RefCell::try_borrow`
* `RefCell::try_borrow_mut`
* `DefaultHasher`
* `DefaultHasher::new`
* `DefaultHasher::default`
Deprecated
* `BinaryHeap::push_pop`
* `BinaryHeap::replace`
* `SipHash13`
* `SipHash24`
* `SipHasher` - use `DefaultHasher` instead in the `std::collections::hash_map`
module
Closes #28147
Closes #34767
Closes #35057
Closes #35070
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In particular, this fixes some bugs displaying doc URLs for method calls.
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Refactor `TyStruct`/`TyEnum`/`TyUnion` into `TyAdt`
r? @eddyb
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save-analysis bits and pieces
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save-analysis: some refinement to the value string for variables
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Replace `_, _` with `..` in patterns
This is how https://github.com/rust-lang/rust/issues/33627 looks in action.
Looks especially nice in leftmost/rightmost positions `(first, ..)`/`(.., last)`.
I haven't touched libsyntax intentionally because the feature is still unstable.
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Add --Zsave-analysis-api
This is a save-analysis variation which can be used with libraries distributed without their source (e.g., libstd). It will allow IDEs and other tools to get info about types and create URLs to docs and source, without the unnecessary clutter of internal-only save-analysis info. I'm sure we'll iterate somewhat on the design, but this is a first draft.
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The parent id is used for constructing rustdoc URLs by clients
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and refactor `ast::PathListItemKind::Ident` -> `ast::PathListItem_`.
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Replace FnOutput with Ty
Replace FnConverging(ty) with ty
Purge FnDiverging, FunctionRetTy::NoReturn and FunctionRetTy::None
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save-analysis: fix a bug with tuple sub-expressions
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This is a spiritual succesor to #34268/8531d581, in which we replaced a
number of matches of None to the unit value with `if let` conditionals
where it was judged that this made for clearer/simpler code (as would be
recommended by Manishearth/rust-clippy's `single_match` lint). The same
rationale applies to matches of None to the empty block.
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