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path: root/src/libsyntax/parse/parser.rs
AgeCommit message (Collapse)AuthorLines
2019-03-16Rely on drop to emit unclosed delimsEsteban Küber-1/+0
2019-03-16Simplify codeEsteban Küber-4/+2
2019-03-16Always emit mismatched delim errors, never panicEsteban Küber-3/+2
2019-03-16Collect unclosed delimiters in parent parserEsteban Küber-4/+13
2019-03-16Emit missing unclosed delimiter errorsEsteban Küber-5/+9
2019-03-16Panic when unmatched delimiters aren't emittedEsteban Küber-0/+7
2019-03-16Emit unclosed delimiters during recoveryEsteban Küber-0/+1
2019-03-16Bail when encountering a second unexpected token in the same spanEsteban Küber-4/+10
2019-03-16Do not panic on missing close parenEsteban Küber-1/+3
Fix #58856.
2019-03-16Expand where negative supertrait specific error is shownEsteban Küber-24/+28
Fix #58857.
2019-02-24Rollup merge of #57364 - hdhoang:33418_negative_bounds, r=estebankMazdak Farrokhzad-21/+59
Improve parsing diagnostic for negative supertrait bounds closes #33418 r? @estebank
2019-02-23Rollup merge of #58654 - estebank:underflow, r=nikomatsakisMazdak Farrokhzad-4/+8
Do not underflow after resetting unmatched braces count Fix #58638. r? @oli-obk
2019-02-23Rollup merge of #58476 - nnethercote:rm-LazyTokenStream, r=petrochenkovMazdak Farrokhzad-8/+8
Remove `LazyTokenStream`. `LazyTokenStream` was added in #40939. Perhaps it was an effective optimization then, but no longer. This PR removes it, making the code both simpler and faster. r? @alexcrichton
2019-02-23Improve parsing diagnostic for negative supertrait boundsHoàng Đức Hiếu-21/+59
2019-02-22Do not underflow after resetting unmatched braces countEsteban Küber-4/+8
Fix #58638.
2019-02-22Rollup merge of #58198 - ↵Mazdak Farrokhzad-2/+15
igorsdv:suggest-removing-parentheses-surrounding-lifetimes, r=estebank Suggest removing parentheses surrounding lifetimes Fixes #57386. r? @estebank
2019-02-18Fix style nitsDan Robertson-1/+2
Fix style nits discovered in reading code.
2019-02-18Remove `LazyTokenStream`.Nicholas Nethercote-8/+8
It's present within `Token::Interpolated` as an optimization, so that if a nonterminal is converted to a `TokenStream` multiple times, the first-computed value is saved and reused. But in practice it's not needed. `interpolated_to_tokenstream()` is a cold function: it's only called a few dozen times while compiling rustc itself, and a few hundred times across the entire `rustc-perf` suite. Furthermore, when it is called, it is almost always the first conversion, so no benefit is gained from it. So this commit removes `LazyTokenStream`, along with the now-unnecessary `Token::interpolated()`. As well as a significant simplification, the removal speeds things up slightly, mostly due to not having to `drop` the `LazyTokenStream` instances.
2019-02-13Rollup merge of #58387 - alexreg:fix-trait-alias-2, r=centrilMazdak Farrokhzad-1/+7
Disallow `auto` trait alias syntax See https://github.com/rust-lang/rust/issues/41517#issuecomment-462567679. r? @Centril CC @topecongiro @nikomatsakis
2019-02-13Rollup merge of #58273 - taiki-e:rename-dependency, r=matthewjasperMazdak Farrokhzad-2/+2
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-2/+2
2019-02-13Rename rustc_errors dependency in rust 2018 cratesTaiki Endo-1/+1
2019-02-12Disallow `auto` trait alias syntax.Alexander Regueiro-1/+7
2019-02-10rustc: doc commentsAlexander Regueiro-153/+166
2019-02-09Auto merge of #57944 - estebank:unclosed-delim-the-quickening, r=oli-obkbors-64/+203
Deduplicate mismatched delimiter errors Delay unmatched delimiter errors until after the parser has run to deduplicate them when parsing and attempt recovering intelligently. Second attempt at #54029, follow up to #53949. Fix #31528.
2019-02-07Suggest removing parentheses surrounding lifetimesIgor Sadikov-2/+15
2019-02-07Add fixmeEsteban Küber-1/+3
2019-02-07Parse negative literals in const generic argumentsvarkor-2/+1
2019-02-07Add warning for a parameter list with an attribute but no parametersvarkor-7/+19
2019-02-07Adjust parser generic parameter errorsvarkor-27/+26
2019-02-07Parse const genericsvarkor-178/+98
Co-Authored-By: Gabriel Smith <yodaldevoid@users.noreply.github.com>
2019-02-07add doc comment and revert angle bracket changeEsteban Küber-3/+5
2019-02-07tweak wording based on in person feedbackEsteban Küber-2/+2
2019-02-07Remove unused `match`Esteban Küber-19/+4
2019-02-07Add missing trailing newlineEsteban Küber-1/+1
2019-02-07Remove spurious complaint about missing expression for bare semicolonsEsteban Küber-1/+16
2019-02-07unify error handling to single methodEsteban Küber-16/+20
2019-02-07Deduplicate mismatched delimiter errorsEsteban Küber-65/+196
Delay unmatched delimiter errors until after the parser has run to deduplicate them when parsing and attempt recovering intelligently.
2019-02-07libsyntax => 2018Taiki Endo-55/+57
2019-02-06Auto merge of #58061 - nnethercote:overhaul-syntax-Folder, r=petrochenkovbors-1/+2
Overhaul `syntax::fold::Folder`. This PR 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`. This makes the code faster and more concise.
2019-02-06Overhaul `syntax::fold::Folder`.Nicholas Nethercote-1/+2
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.
2019-02-04Add the span of attributes of the lhs to the span of the assignment expressiontopecongiro-0/+8
2019-01-30Suggest to add each of `|` and `()` when unexpected `,` is found in patternKnium_-1/+6
2019-01-26remove `_with_applicability` from suggestion fnsAndy Russell-54/+54
2019-01-26Auto merge of #57852 - davidtwco:issue-57819, r=estebankbors-8/+190
Suggest removing leading left angle brackets. Fixes #57819. This PR adds errors and accompanying suggestions as below: ``` bar::<<<<<T as Foo>::Output>(); ^^^ help: remove extra angle brackets ``` r? @estebank
2019-01-25Rollup merge of #57886 - davidtwco:issue-57385, r=estebankMazdak Farrokhzad-27/+107
Add suggestion for moving type declaration before associated type bindings in generic arguments. Fixes #57385. r? @estebank
2019-01-25Combining move lifetime and type suggestions.David Wood-30/+73
This commit combines the move lifetime and move type suggestions so that when rustfix applies them they don't conflict with each other.
2019-01-25Suggestion moving types before associated types.David Wood-15/+52
This commit extends existing suggestions to move lifetimes before types in generic arguments to also suggest moving types behind associated type bindings.
2019-01-24Auto merge of #57879 - Centril:rollup, r=Centrilbors-1/+17
Rollup of 9 pull requests Successful merges: - #57380 (Fix Instant/Duration math precision & associativity on Windows) - #57606 (Get rid of the fake stack frame for reading from constants) - #57803 (Several changes to libunwind for SGX target) - #57846 (rustdoc: fix ICE from loading proc-macro stubs) - #57860 (Add os::fortanix_sgx::ffi module) - #57861 (Don't export table by default in wasm) - #57863 (Add suggestion for incorrect field syntax.) - #57867 (Fix std::future::from_generator documentation) - #57873 (Stabilize no_panic_pow) Failed merges: r? @ghost
2019-01-24Rollup merge of #57863 - davidtwco:issue-57684, r=estebankMazdak Farrokhzad-1/+17
Add suggestion for incorrect field syntax. Fixes #57684. This commit adds a suggestion when a `=` character is used when specifying the value of a field in a struct constructor incorrectly instead of a `:` character. r? @estebank
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