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2019-02-13Rollup merge of #58273 - taiki-e:rename-dependency, r=matthewjasperMazdak Farrokhzad-1/+1
Rename rustc_errors dependency in rust 2018 crates I think this is a better solution than `use rustc_errors as errors` in `lib.rs` and `use crate::errors` in modules. Related: rust-lang/cargo#5653 cc #58099 r? @Centril
2019-02-13Cleanup importsTaiki Endo-1/+1
2019-02-13Rename rustc_errors dependency in rust 2018 cratesTaiki Endo-1/+1
2019-02-10rustc: doc commentsAlexander Regueiro-4/+4
2019-02-07libsyntax => 2018Taiki Endo-10/+11
2019-02-06Overhaul `syntax::fold::Folder`.Nicholas Nethercote-97/+69
This commit changes `syntax::fold::Folder` from a functional style (where most methods take a `T` and produce a new `T`) to a more imperative style (where most methods take and modify a `&mut T`), and renames it `syntax::mut_visit::MutVisitor`. The first benefit is speed. The functional style does not require any reallocations, due to the use of `P::map` and `MoveMap::move_{,flat_}map`. However, every field in the AST must be overwritten; even those fields that are unchanged are overwritten with the same value. This causes a lot of unnecessary memory writes. The imperative style reduces instruction counts by 1--3% across a wide range of workloads, particularly incremental workloads. The second benefit is conciseness; the imperative style is usually more concise. E.g. compare the old functional style: ``` fn fold_abc(&mut self, abc: ABC) { ABC { a: fold_a(abc.a), b: fold_b(abc.b), c: abc.c, } } ``` with the imperative style: ``` fn visit_abc(&mut self, ABC { a, b, c: _ }: &mut ABC) { visit_a(a); visit_b(b); } ``` (The reductions get larger in more complex examples.) Overall, the patch removes over 200 lines of code -- even though the new code has more comments -- and a lot of the remaining lines have fewer characters. Some notes: - The old style used methods called `fold_*`. The new style mostly uses methods called `visit_*`, but there are a few methods that map a `T` to something other than a `T`, which are called `flat_map_*` (`T` maps to multiple `T`s) or `filter_map_*` (`T` maps to 0 or 1 `T`s). - `move_map.rs`/`MoveMap`/`move_map`/`move_flat_map` are renamed `map_in_place.rs`/`MapInPlace`/`map_in_place`/`flat_map_in_place` to reflect their slightly changed signatures. - Although this commit renames the `fold` module as `mut_visit`, it keeps it in the `fold.rs` file, so as not to confuse git. The next commit will rename the file.
2019-02-05Various improvements in `Folder` impls.Nicholas Nethercote-32/+12
2019-01-26remove `_with_applicability` from suggestion fnsAndy Russell-1/+1
2019-01-13Implement basic input validation for built-in attributesVadim Petrochenkov-6/+3
2019-01-08remove unused imports and feature gate from testsdylan_DPC-3/+0
2019-01-08stabilise cfg_attrdylan_DPC-20/+2
2018-12-25Remove licensesMark Rousskov-10/+0
2018-12-07Various minor/cosmetic improvements to codeAlexander Regueiro-2/+2
2018-10-23fix typos in various placesMatthias Krüger-2/+2
2018-10-07cfg_attr_multi: Feature gateHavvy (Ryan Scheel)-1/+35
2018-10-05cfg_attr_multi: Basic implementationHavvy (Ryan Scheel)-16/+43
Does not implement the warning or a feature flag.
2018-09-27Auto merge of #54581 - petrochenkov:cfgattr, r=alexcrichtonbors-0/+1
Accept trailing comma in `cfg_attr` Fixes https://github.com/rust-lang/rust/issues/54463 (stable-to-beta regression)
2018-09-26Remove OneVectorljedrz-6/+7
2018-09-26Accept trailing comma in `cfg_attr`Vadim Petrochenkov-0/+1
2018-09-17Whitespace fix again.Vitaly _Vi Shukela-4/+4
2018-09-17Fixed some remaining whitespace issues.Vitaly _Vi Shukela-1/+1
(Not sure if it is correct although).
2018-09-17Fill in suggestions Applicability according to @estebankVitaly _Vi Shukela-2/+3
Also fix some formatting along the way.
2018-09-16Remove usages of span_suggestion without ApplicabilityVitaly _Vi Shukela-1/+6
Use Applicability::Unspecified for all of them instead.
2018-09-06Validate syntax of `cfg` attributesVadim Petrochenkov-12/+32
2018-09-04Move #[test_case] to a syntax extensionJohn Renner-13/+2
2018-09-04Introduce Custom Test FrameworksJohn Renner-4/+4
2018-08-19mv (mod) codemap source_mapDonato Sciarra-1/+1
2018-08-15syntax: Enforce attribute grammar in the parserVadim Petrochenkov-1/+1
2018-08-13Move SmallVec and ThinVec out of libsyntaxljedrz-6/+6
2018-06-02Deny #[cfg] and #[cfg_attr] on generic parameters.kennytm-0/+16
2018-04-06Rename `ast::Variant_::name` into `ident` + Fix rebaseVadim Petrochenkov-1/+1
2018-04-02Expand attribute macros on statements and expressions.Austin Bonander-10/+17
Retains the `stmt_expr_attributes` feature requirement for attributes on expressions. closes #41475 cc #38356
2018-03-20rename epoch to editionKurtis Nusbaum-3/+3
2018-03-08Make it possible to ungate features by epochManish Goregaokar-2/+3
2018-02-17fix more typos found by codespell.Matthias Krüger-1/+1
2017-12-17syntax: Rename `P::unwrap` into `P::into_inner`Vadim Petrochenkov-2/+2
2017-08-30Make fields of `Span` privateVadim Petrochenkov-3/+2
2017-08-15use field init shorthand EVERYWHEREZack M. Davis-5/+5
Like #43008 (f668999), but _much more aggressive_.
2017-06-15Remove struct_field_attributes feature gateWonwoo Choi-28/+0
2017-05-12Fix some clippy warnings in libsyntaxAndre Bogus-4/+4
This is mostly removing stray ampersands, needless returns and lifetimes.
2017-03-14Liberalize attributes.Jeffrey Seyfried-40/+32
2017-03-14Refactor `Attribute` to use `Path` and `TokenStream` instead of `MetaItem`.Jeffrey Seyfried-3/+5
2017-01-11syntax: struct field attributes and cfgBenjamin Saunders-5/+64
2016-11-20Move `MetaItemKind`'s `Name` to a field of `MetaItem`.Jeffrey Seyfried-1/+1
2016-11-20Refactor away `ast::Attribute_`.Jeffrey Seyfried-6/+7
2016-11-11Change implementation of syntax::util::SmallVector to use ↵Mark-Simulacrum-1/+1
data_structures::SmallVec.
2016-10-29Move `CrateConfig` from `Crate` to `ParseSess`.Jeffrey Seyfried-4/+2
2016-10-18Add invalid doc comment help messageGuillaume Gomez-6/+10
2016-10-12Stabilise attributes on statements.Nick Cameron-3/+2
Note that attributes on expressions are still unstable and are behind the `stmt_expr_attributes` flag. cc [Tracking issue](https://github.com/rust-lang/rust/issues/15701)
2016-09-27With `--test`, make `#[test]` functions `pub` in `InvocationCollector`Jeffrey Seyfried-1/+1
and expand the `__test_reexports` in the correct scope.
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