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path: root/compiler/rustc_ast_lowering/src/lib.rs
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2021-02-04lowering of generic args in AssocTyConstraintb-naber-7/+32
2021-02-02Auto merge of #81405 - bugadani:ast, r=cjgillotbors-2/+3
Box the biggest ast::ItemKind variants This PR is a different approach on https://github.com/rust-lang/rust/pull/81400, aiming to save memory in humongous ASTs. The three affected item kind enums are: - `ast::ItemKind` (208 -> 112 bytes) - `ast::AssocItemKind` (176 -> 72 bytes) - `ast::ForeignItemKind` (176 -> 72 bytes)
2021-02-02Bump rustfmt versionMark Rousskov-1/+3
Also switches on formatting of the mir build module
2021-02-01Box the biggest ast::ItemKind variantsDániel Buga-2/+3
2021-01-31Rollup merge of #80470 - SimonSapin:array-intoiter-type, r=m-ou-seJonas Schievink-1/+0
Stabilize by-value `[T; N]` iterator `core::array::IntoIter` Tracking issue: https://github.com/rust-lang/rust/issues/65798 This is unblocked now that `min_const_generics` has been stabilized in https://github.com/rust-lang/rust/pull/79135. This PR does *not* include the corresponding `IntoIterator` impl, which is https://github.com/rust-lang/rust/pull/65819. Instead, an iterator can be constructed through the `new` method. `new` would become unnecessary when `IntoIterator` is implemented and might be deprecated then, although it will stay stable.
2021-01-13Lint on extern in item declaration positionMark Rousskov-1/+2
2021-01-13Introduce missing ABI lint on extern blocksMark Rousskov-1/+23
2021-01-09ast: Remove some indirection layers from values in key-value attributesVadim Petrochenkov-4/+30
2021-01-07rustc_parse: Better spans for synthesized token streamsVadim Petrochenkov-8/+2
2021-01-03Make `ExpnData` fields `krate` and `orig_id` privateAaron Hill-5/+2
These fields are only used by hygiene serialized, and should not be accessed by anything outside of `rustc_span`.
2021-01-01first pass at default values for const genericsJulian Knodt-2/+3
- Adds optional default values to const generic parameters in the AST and HIR - Parses these optional default values - Adds a `const_generics_defaults` feature gate
2020-12-30Rollup merge of #80495 - jyn514:rename-empty, r=petrochenkovMara Bos-1/+1
Rename kw::Invalid -> kw::Empty See https://rust-lang.zulipchat.com/#narrow/stream/182449-t-compiler.2Fhelp/topic/Is.20there.20a.20symbol.20for.20the.20empty.20string.3F/near/220054471 for context. r? `@petrochenkov`
2020-12-30Rename kw::Invalid -> kw::EmptyJoshua Nelson-1/+1
See https://rust-lang.zulipchat.com/#narrow/stream/182449-t-compiler.2Fhelp/topic/Is.20there.20a.20symbol.20for.20the.20empty.20string.3F/near/220054471 for context.
2020-12-30Auto merge of #80503 - JohnTitor:rollup-b26vglu, r=JohnTitorbors-6/+5
Rollup of 13 pull requests Successful merges: - #79812 (Lint on redundant trailing semicolon after item) - #80348 (remove redundant clones (clippy::redundant_clone)) - #80358 (Edit rustc_span documentation) - #80457 (Add missing commas to `rustc_ast_pretty::pp` docs) - #80461 (Add llvm-libunwind change to bootstrap CHANGELOG) - #80464 (Use Option::map_or instead of open coding it) - #80465 (Fix typo in ffi-pure.md) - #80467 (More uses of the matches! macro) - #80469 (Fix small typo in time comment) - #80472 (Use sans-serif font for the "all items" page links) - #80477 (Make forget intrinsic safe) - #80482 (don't clone copy types) - #80487 (don't redundantly repeat field names) Failed merges: r? `@ghost` `@rustbot` modify labels: rollup
2020-12-29More uses of the matches! macroLingMan-6/+5
2020-12-29Remove pretty-print/reparse hack, and add derive-specific hackAaron Hill-31/+82
2020-12-29Stabilize by-value `[T; N]` iterator `core::array::IntoIter`Simon Sapin-1/+0
Tracking issue: https://github.com/rust-lang/rust/issues/65798 This is unblocked now that `min_const_generics` has been stabilized in https://github.com/rust-lang/rust/pull/79135. This PR does *not* include the corresponding `IntoIterator` impl, which is https://github.com/rust-lang/rust/pull/65819. Instead, an iterator can be constructed through the `new` method. `new` would become unnecessary when `IntoIterator` is implemented and might be deprecated then, although it will stay stable.
2020-11-27Auto merge of #79318 - cjgillot:fitem, r=lcnrbors-0/+8
Store HIR ForeignItem in a side table In a similar fashion to Item, ImplItem and TraitItem.
2020-11-27Auto merge of #79266 - b-naber:gat_trait_path_parser, r=petrochenkovbors-0/+7
Generic Associated Types in Trait Paths - Ast part The Ast part of https://github.com/rust-lang/rust/pull/78978 r? `@petrochenkov`
2020-11-26Rebase fallout.Camille GILLOT-0/+5
2020-11-26Store ForeignItem in a side table.Camille GILLOT-0/+3
2020-11-25insert span_fatal call in ast lowering to indicate that generic arguments in ↵b-naber-0/+7
AssocTyConstraints haven't been fully implemented
2020-11-23Remove Pat pre-lowering.Camille GILLOT-43/+5
2020-11-15Rollup merge of #77802 - jyn514:bootstrap-specific, r=nikomatsakisJonas Schievink-3/+1
Allow making `RUSTC_BOOTSTRAP` conditional on the crate name Motivation: This came up in the [Zulip stream](https://rust-lang.zulipchat.com/#narrow/stream/233931-t-compiler.2Fmajor-changes/topic/Require.20users.20to.20confirm.20they.20know.20RUSTC_.E2.80.A6.20compiler-team.23350/near/208403962) for https://github.com/rust-lang/compiler-team/issues/350. See also https://github.com/rust-lang/cargo/pull/6608#issuecomment-458546258; this implements https://github.com/rust-lang/cargo/issues/6627. The goal is for this to eventually allow prohibiting setting `RUSTC_BOOTSTRAP` in build.rs (https://github.com/rust-lang/cargo/issues/7088). ## User-facing changes - `RUSTC_BOOTSTRAP=1` still works; there is no current plan to remove this. - Things like `RUSTC_BOOTSTRAP=0` no longer activate nightly features. In practice this shouldn't be a big deal, since `RUSTC_BOOTSTRAP` is the opposite of stable and everyone uses `RUSTC_BOOTSTRAP=1` anyway. - `RUSTC_BOOTSTRAP=x` will enable nightly features only for crate `x`. - `RUSTC_BOOTSTRAP=x,y` will enable nightly features only for crates `x` and `y`. ## Implementation changes The main change is that `UnstableOptions::from_environment` now requires an (optional) crate name. If the crate name is unknown (`None`), then the new feature is not available and you still have to use `RUSTC_BOOTSTRAP=1`. In practice this means the feature is only available for `--crate-name`, not for `#![crate_name]`; I'm interested in supporting the second but I'm not sure how. Other major changes: - Added `Session::is_nightly_build()`, which uses the `crate_name` of the session - Added `nightly_options::match_is_nightly_build`, a convenience method for looking up `--crate-name` from CLI arguments. `Session::is_nightly_build()`should be preferred where possible, since it will take into account `#![crate_name]` (I think). - Added `unstable_features` to `rustdoc::RenderOptions` I'm not sure whether this counts as T-compiler or T-lang; _technically_ RUSTC_BOOTSTRAP is an implementation detail, but it's been used so much it seems like this counts as a language change too. r? `@joshtriplett` cc `@Mark-Simulacrum` `@hsivonen`
2020-11-13Reserve space in advanceDániel Buga-5/+5
2020-11-13Allocate less in lower_block_noallocDániel Buga-20/+21
2020-11-12Auto merge of #78782 - petrochenkov:nodoctok, r=Aaron1011bors-7/+10
Do not collect tokens for doc comments Doc comment is a single token and AST has all the information to re-create it precisely. Doc comments are also responsible for majority of calls to `collect_tokens` (with `num_calls == 1` and `num_calls == 0`, cc https://github.com/rust-lang/rust/pull/78736). (I also moved token collection into `fn parse_attribute` to deduplicate code a bit.) r? `@Aaron1011`
2020-11-09Do not collect tokens for doc commentsVadim Petrochenkov-7/+10
2020-11-07Allow making `RUSTC_BOOTSTRAP` conditional on the crate nameJoshua Nelson-3/+1
The main change is that `UnstableOptions::from_environment` now requires an (optional) crate name. If the crate name is unknown (`None`), then the new feature is not available and you still have to use `RUSTC_BOOTSTRAP=1`. In practice this means the feature is only available for `--crate-name`, not for `#![crate_name]`; I'm interested in supporting the second but I'm not sure how. Other major changes: - Added `Session::is_nightly_build()`, which uses the `crate_name` of the session - Added `nightly_options::match_is_nightly_build`, a convenience method for looking up `--crate-name` from CLI arguments. `Session::is_nightly_build()`should be preferred where possible, since it will take into account `#![crate_name]` (I think). - Added `unstable_features` to `rustdoc::RenderOptions` There is a user-facing change here: things like `RUSTC_BOOTSTRAP=0` no longer active nightly features. In practice this shouldn't be a big deal, since `RUSTC_BOOTSTRAP` is the opposite of stable and everyone uses `RUSTC_BOOTSTRAP=1` anyway. - Add tests Check against `Cheat`, not whether nightly features are allowed. Nightly features are always allowed on the nightly channel. - Only call `is_nightly_build()` once within a function - Use booleans consistently for rustc_incremental Sessions can't be passed through threads, so `read_file` couldn't take a session. To be consistent, also take a boolean in `write_file_header`.
2020-11-07Implement destructuring assignment for tuplesFabian Zaiser-1/+16
Co-authored-by: varkor <github@varkor.com>
2020-10-30Fix some more clippy warningsJoshua Nelson-4/+1
2020-10-29Fix typosDániel Buga-3/+3
2020-10-25Auto merge of #77546 - lcnr:impl-trait-closure, r=eddybbors-5/+15
fix def collector for impl trait fixes #77329 We now consistently make `impl Trait` a hir owner, requiring some special casing for synthetic generic params. r? `@eddyb`
2020-10-21Unconditionally capture tokens for attributes.Aaron Hill-2/+3
This allows us to avoid synthesizing tokens in `prepend_attr`, since we have the original tokens available. We still need to synthesize tokens when expanding `cfg_attr`, but this is an unavoidable consequence of the syntax of `cfg_attr` - the user does not supply the `#` and `[]` tokens that a `cfg_attr` expands to.
2020-10-07implement nitsBastian Kauschke-1/+1
2020-10-07split SyntheticTyParamKindBastian Kauschke-1/+1
2020-10-07bodgeBastian Kauschke-7/+12
2020-10-07do not lower patterns in impl TraitBastian Kauschke-0/+5
2020-09-10Attach tokens to `NtMeta` (`ast::AttrItem`)Aaron Hill-0/+1
An `AttrItem` does not have outer attributes, so we only capture tokens when parsing a `macro_rules!` matcher
2020-09-10Attach `TokenStream` to `ast::Ty`Aaron Hill-0/+1
A `Ty` does not have outer attributes, so we only capture tokens when parsing a `macro_rules!` matcher
2020-08-30mv compiler to compiler/mark-0/+2737
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