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A few documentation improvements for `syntax::print::pp`
* Moved algorithm explanation to module docs
* Added ``` before and after the examples
* Explanation of the `rbox`, `ibox` and `cbox` names
* Added docs about the breaking types to `Breaks`
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Closes #35897.
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from the current compiler version
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* Moved algorithm explanation to module docs
* Added ``` before and after the examples
* Explanation of the `rbox`, `ibox` and `cbox` names
* Added docs about the breaking types to `Breaks`
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zackmdavis:more_struct_aliases_stabilization_version, r=petrochenkov
correct version in which more_struct_aliases was/will be stable
The stabilizing commit is 5056a437, which is not in 1.14, but is (at
time of writing) on the 1.16 beta branch. [See discussion](https://github.com/rust-lang/rust/pull/39282#discussion_r99481687).
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Change tracking issue for `proc_macro` feature to #38356
r? @jseyfried
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save-analysis: be more paranoid about generated paths
fixes https://github.com/rust-lang-nursery/rls/issues/160
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Expand derive macros in the MacroExpander
This removes the expand_derives function, and sprinkles the functionality throughout the Invocation Collector, Expander and Resolver.
Fixes https://github.com/rust-lang/rust/issues/39326
r? @jseyfried
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The stabilizing commit is 5056a437, which is not in 1.14, but is (at
time of writing) on the 1.16 beta branch.
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This removes the expand_derives function, and sprinkles
the functionality throughout the Invocation Collector,
Expander and Resolver.
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This allows builtin derives to be registered and
resolved, just like other derive types.
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Implement kind="static-nobundle" (RFC 1717)
This implements the "static-nobundle" library kind (last item from #37403).
Rustc handles "static-nobundle" libs very similarly to dylibs, except that on Windows, uses of their symbols do not get marked with "dllimport". Which is the whole point of this feature.
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Add information in case of markdown block code test failure
r? @steveklabnik
cc @jonathandturner
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This commit updates the version number to 1.17.0 as we're not on that version of
the nightly compiler, and at the same time this updates src/stage0.txt to
bootstrap from freshly minted beta compiler and beta Cargo.
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parser: use suggestions instead of helps with code in them
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fixes https://github.com/rust-lang-nursery/rls/issues/160
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Fix typos in libsyntax/tokenstream.rs
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Fix can_begin_expr keyword behavior
Partial fix for #28784.
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Stabilize Self and associated types in struct expressions and patterns
Rebase of https://github.com/rust-lang/rust/pull/37734
Closes https://github.com/rust-lang/rust/issues/37544
r? @nikomatsakis
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Bounds parsing refactoring 2
See https://github.com/rust-lang/rust/pull/37511 for previous discussion.
cc @matklad
Relaxed parsing rules:
- zero bounds after `:` are allowed in all contexts.
- zero predicates are allowed after `where`.
- trailing separator `,` is allowed after predicates in `where` clauses not followed by `{`.
Other parsing rules:
- trailing separator `+` is still allowed in all bound lists.
Code is also cleaned up and tests added.
I haven't touched parsing of trait object types yet, I'll do it later.
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Remove Reflect
PR for removing the `Reflect` trait. Opened so that a crater run can be done for testing the impact: https://github.com/rust-lang/rust/issues/27749#issuecomment-272665163
Fixes #27749
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exclusive range patterns
adds `..` patterns to the language under a feature gate (`exclusive_range_pattern`).
This allows turning
``` rust
match i {
0...9 => {},
10...19 => {},
20...29 => {},
_ => {}
}
```
into
``` rust
match i {
0..10 => {},
10..20 => {},
20..30 => {},
_ => {}
}
```
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* Remove the Reflect trait
* Remove the "reflect" lang feature
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Fix multiple labels when some don't have message
The diagnostic emitter now accounts for labels with no text message, presenting the underline on its own, without drawing the line for the non existing message below it. Go from
```
error: foo
--> test.rs:3:6
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3 | a { b { c } d }
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| | `b` is a good letter
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```
to
```
error: foo
--> test.rs:3:6
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3 | a { b { c } d }
| ----^^^^^^^----
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| `b` is a good letter
```
from
```
error: foo
--> test.rs:3:6
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3 | a { b { c } d }
| ^^^^-------^^^^
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| |
| `a` is a good letter
```
to
```
error: foo
--> test.rs:3:6
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3 | a { b { c } d }
| ^^^^-------^^^^ `a` is a good letter
```
and from
```
error: foo
--> test.rs:3:6
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3 | a { b { c } d }
| ^^^^-------^^^^
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```
to
```
error: foo
--> test.rs:3:6
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3 | a { b { c } d }
| ^^^^-------^^^^
```
r? @nikomatsakis
cc @jonathandturner, @GuillaumeGomez, @nrc
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Refactor `TokenStream`
r? @nrc
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Improve unused `extern crate` and unused `#[macro_use]` warnings
This PR
- adds `unused_imports` warnings for unused `#[macro_use] extern crate` macro imports,
- improves `unused_extern_crates` warnings (avoids false negatives), and
- removes unused `#[macro_use]` imports and unused `extern crate`s.
r? @nrc
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They're long dead since the switch to flexible targets, but was not
removed like their consumers were. Interesting they even got maintained
by various porters out there!
Technically [syntax-breaking] as they're public API, but since they're
unused in the compiler, the potential breakage IMO should be minimal.
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The diagnostic emitter now accounts for labels with no text message,
presenting the underline on its own, without drawing the line for the
non existing message below it. Go from
```
error: foo
--> test.rs:3:6
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3 | a { b { c } d }
| ----^^^^^^^----
| | |
| | `b` is a good letter
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```
to
```
error: foo
--> test.rs:3:6
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3 | a { b { c } d }
| ----^^^^^^^----
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| `b` is a good letter
```
and from
```
error: foo
--> test.rs:3:6
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3 | a { b { c } d }
| ^^^^-------^^^^
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| `a` is a good letter
```
to
```
error: foo
--> test.rs:3:6
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3 | a { b { c } d }
| ^^^^-------^^^^ `a` is a good letter
```
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Fix regression in parsing of trait object types
Fixes https://github.com/rust-lang/rust/issues/39169
Accepting parens in this position is a regression itself, introduced in Rust 1.6 by https://github.com/rust-lang/rust/pull/29870, so I hope to revert this in my next bounds refactoring patch (possibly with a warning, crater run, etc).
r? @eddyb
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Refactor the parser to consume token trees
This is groundwork for efficiently parsing attribute proc macro invocations, bang macro invocations, and `TokenStream`-based attributes and fragment matchers.
This improves parsing performance by 8-15% and expansion performance by 0-5% on a sampling of the compiler's crates.
r? @nrc
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Implement `#[proc_macro_attribute]`
This implements `#[proc_macro_attribute]` as described in https://github.com/rust-lang/rfcs/pull/1566
The following major (hopefully non-breaking) changes are included:
* Refactor `proc_macro::TokenStream` to use `syntax::tokenstream::TokenStream`.
* `proc_macro::tokenstream::TokenStream` no longer emits newlines between items, this can be trivially restored if desired
* `proc_macro::TokenStream::from_str` does not try to parse an item anymore, moved to `impl MultiItemModifier for CustomDerive` with more informative error message
* Implement `#[proc_macro_attribute]`, which expects functions of the kind `fn(TokenStream, TokenStream) -> TokenStream`
* Reactivated `#![feature(proc_macro)]` and gated `#[proc_macro_attribute]` under it
* `#![feature(proc_macro)]` and `#![feature(custom_attribute)]` are mutually exclusive
* adding `#![feature(proc_macro)]` makes the expansion pass assume that any attributes that are not built-in, or introduced by existing syntax extensions, are proc-macro attributes
* Fix `feature_gate::find_lang_feature_issue()` to not use `unwrap()`
* This change wasn't necessary for this PR, but it helped debugging a problem where I was using the wrong feature string.
* Move "completed feature gate checking" pass to after "name resolution" pass
* This was necessary for proper feature-gating of `#[proc_macro_attribute]` invocations when the `proc_macro` feature flag isn't set.
Prototype/Litmus Test: [Implementation](https://github.com/abonander/anterofit/blob/proc_macro/service-attr/src/lib.rs#L13) -- [Usage](https://github.com/abonander/anterofit/blob/proc_macro/service-attr/examples/post_service.rs#L35)
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Teach Diagnostics to highlight text
Support styled `Diagnostic` output:
<img width="469" alt="mismatched types error with colorized types in the note" src="https://cloud.githubusercontent.com/assets/1606434/21871227/93a84198-d815-11e6-88b1-0ede3c7e28ef.png">
Closes #37532 and #38901.
r? @nikomatsakis CC @jonathandturner @nagisa @nrc
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