about summary refs log tree commit diff
path: root/compiler/rustc_builtin_macros/src/lib.rs
AgeCommit message (Collapse)AuthorLines
2025-08-19Rollup merge of #145429 - bjorn3:codegen_fn_attrs_improvements, r=jdonszelmann许杰友 Jieyou Xu (Joe)-1/+0
Couple of codegen_fn_attrs improvements As noted in https://github.com/rust-lang/rust/pull/144678#discussion_r2245060329 here is no need to keep link_name and export_name separate, which the third commit fixes by merging them. The second commit removes some dead code and the first commit merges two ifs with equivalent conditions. The last commit is an unrelated change which removes an unused `feature(autodiff)`.
2025-08-15Create unstable `From` builtin macro and register itJakub Beránek-0/+1
2025-08-15Remove unused feature gatebjorn3-1/+0
2025-07-13make `cfg_select` a builtin macroFolkert de Vries-0/+2
2025-07-05rustc_builtin_macros: Make sure registered attributes stay sortedJosh Triplett-0/+2
As with the list of builtin macros, use tidy to make sure the list of builtin attributes stays sorted.
2025-07-01Update `cfg(bootstrap)`Josh Stone-1/+1
2025-06-24Remove the deprecated `concat_idents!` macroTrevor Gross-2/+0
In [137653], the lang and libs-API teams did a joint FCP to deprecate and eventually remove the long-unstable `concat_idents!` macro. The deprecation is landing in 1.88, so do the removal here (target version 1.90). This macro has been superseded by the more recent `${concat(...)}` metavariable expression language feature, which avoids some of the limitations of `concat_idents!`. The metavar expression is unstably available under the [`macro_metavar_expr_concat`] feature. History is mildly interesting here: `concat_idents!` goes back to 2011 when it was introduced with 513276e595f8 ("Add #concat_idents[] and about the same: let asdf_fdsa = "<.<"; assert(#concat_idents[asd,f_f,dsa] == "<.<"); assert(#ident_to_str[use_mention_distinction] == "use_mention_distinction"); (That test existed from introduction until its removal here.) Closes: https://www.github.com/rust-lang/rust/issues/29599 [137653]: https://www.github.com/rust-lang/rust/pull/137653 [`macro_metavar_expr_concat`]: https://www.github.com/rust-lang/rust/issues/124225
2025-06-08Remove all unused feature gates from the compilerbjorn3-1/+0
2025-06-03Add `iter` macroOli Scherer-0/+2
This adds an `iter!` macro that can be used to create movable generators. This also adds a yield_expr feature so the `yield` keyword can be used within iter! macro bodies. This was needed because several unstable features each need `yield` expressions, so this allows us to stabilize them separately from any individual feature. Co-authored-by: Oli Scherer <github35764891676564198441@oli-obk.de> Co-authored-by: Jieyou Xu <jieyouxu@outlook.com> Co-authored-by: Travis Cross <tc@traviscross.com>
2025-05-29Auto merge of #141595 - bjorn3:rustc_no_sysroot_proc_macro, r=onur-ozkanbors-3/+1
Do not get proc_macro from the sysroot in rustc With the stage0 refactor the proc_macro version found in the sysroot will no longer always match the proc_macro version that proc-macros get compiled with by the rustc executable that uses this proc_macro. This will cause problems as soon as the ABI of the bridge gets changed to implement new features or change the way existing features work. To fix this, this commit changes rustc crates to depend directly on the local version of proc_macro which will also be used in the sysroot that rustc will build.
2025-05-27Do not get proc_macro from the sysroot in rustcbjorn3-3/+1
With the stage0 refactor the proc_macro version found in the sysroot will no longer always match the proc_macro version that proc-macros get compiled with by the rustc executable that uses this proc_macro. This will cause problems as soon as the ABI of the bridge gets changed to implement new features or change the way existing features work. To fix this, this commit changes rustc crates to depend directly on the local version of proc_macro which will also be used in the sysroot that rustc will build.
2025-05-21Disable autodiff bootstrappingMarcelo Domínguez-1/+1
2025-05-20Split `autodiff` into `autodiff_forward` and `autodiff_reverse`Marcelo Domínguez-1/+2
Pending fix. ``` error: cannot find a built-in macro with name `autodiff_forward` --> library\core\src\macros\mod.rs:1542:5 | 1542 | / pub macro autodiff_forward($item:item) { 1543 | | /* compiler built-in */ 1544 | | } | |_____^ error: cannot find a built-in macro with name `autodiff_reverse` --> library\core\src\macros\mod.rs:1549:5 | 1549 | / pub macro autodiff_reverse($item:item) { 1550 | | /* compiler built-in */ 1551 | | } | |_____^ error: could not compile `core` (lib) due to 2 previous errors ```
2025-05-12update cfg(bootstrap)Pietro Albini-1/+0
2025-04-30Simplify `LazyAttrTokenStream`.Nicholas Nethercote-0/+1
This commit does the following. - Changes it from `Lrc<Box<dyn ToAttrTokenStream>>` to `Lrc<LazyAttrTokenStreamInner>`. - Reworks `LazyAttrTokenStreamImpl` as `LazyAttrTokenStreamInner`, which is a two-variant enum. - Removes the `ToAttrTokenStream` trait and the two impls of it. The recursion limit must be increased in some crates otherwise rustdoc aborts.
2025-04-23Make #![feature(let_chains)] bootstrap conditional in compiler/est31-1/+1
2025-04-02Remove `recursion_limit` increases.Nicholas Nethercote-1/+0
These are no longer needed now that `Nonterminal` is gone.
2025-03-19Allow builtin macros to be used more than once.Mara Bos-6/+8
This removes E0773 "A builtin-macro was defined more than once."
2025-03-12Auto merge of #138414 - matthiaskrgr:rollup-9ablqdb, r=matthiaskrgrbors-1/+0
Rollup of 7 pull requests Successful merges: - #137314 (change definitely unproductive cycles to error) - #137701 (Convert `ShardedHashMap` to use `hashbrown::HashTable`) - #138269 (uefi: fs: Implement FileType, FilePermissions and FileAttr) - #138331 (Use `RUSTC_LINT_FLAGS` more) - #138345 (Some autodiff cleanups) - #138387 (intrinsics: remove unnecessary leading underscore from argument names) - #138390 (fix incorrect tracing log) r? `@ghost` `@rustbot` modify labels: rollup
2025-03-12Rollup merge of #138331 - nnethercote:use-RUSTC_LINT_FLAGS-more, ↵Matthias Krüger-1/+0
r=onur-ozkan,jieyouxu Use `RUSTC_LINT_FLAGS` more An alternative to the failed #138084. Fixes #138106. r? ````@jieyouxu````
2025-03-12Auto merge of #138083 - nnethercote:rm-NtItem-NtStmt, r=petrochenkovbors-0/+1
Remove `NtItem` and `NtStmt` Another piece of #124141. r? `@petrochenkov`
2025-03-11Auto merge of #128440 - oli-obk:defines, r=lcnrbors-0/+2
Add `#[define_opaques]` attribute and require it for all type-alias-impl-trait sites that register a hidden type Instead of relying on the signature of items to decide whether they are constraining an opaque type, the opaque types that the item constrains must be explicitly listed. A previous version of this PR used an actual attribute, but had to keep the resolved `DefId`s in a side table. Now we just lower to fields in the AST that have no surface syntax, instead a builtin attribute macro fills in those fields where applicable. Note that for convenience referencing opaque types in associated types from associated methods on the same impl will not require an attribute. If that causes problems `#[defines()]` can be used to overwrite the default of searching for opaques in the signature. One wart of this design is that closures and static items do not have generics. So since I stored the opaques in the generics of functions, consts and methods, I would need to add a custom field to closures and statics to track this information. During a T-types discussion we decided to just not do this for now. fixes #131298
2025-03-11Implement `#[define_opaque]` attribute for functions.Oli Scherer-0/+2
2025-03-11Remove `#![warn(unreachable_pub)]` from all `compiler/` crates.Nicholas Nethercote-1/+0
It's no longer necessary now that `-Wunreachable_pub` is being passed.
2025-03-10Revert "Use workspace lints for crates in `compiler/` #138084"许杰友 Jieyou Xu (Joe)-0/+1
Revert <https://github.com/rust-lang/rust/pull/138084> to buy time to consider options that avoids breaking downstream usages of cargo on distributed `rustc-src` artifacts, where such cargo invocations fail due to inability to inherit `lints` from workspace root manifest's `workspace.lints` (this is only valid for the source rust-lang/rust workspace, but not really the distributed `rustc-src` artifacts). This breakage was reported in <https://github.com/rust-lang/rust/issues/138304>. This reverts commit 48caf81484b50dca5a5cebb614899a3df81ca898, reversing changes made to c6662879b27f5161e95f39395e3c9513a7b97028.
2025-03-08Remove `#![warn(unreachable_pub)]` from all `compiler/` crates.Nicholas Nethercote-1/+0
(Except for `rustc_codegen_cranelift`.) It's no longer necessary now that `unreachable_pub` is in the workspace lints.
2025-03-07Increase recursion_limit in numerous crates.Nicholas Nethercote-0/+1
This is temporarily needed for `x doc compiler` to work. They can be removed once the `Nonterminal` is removed (#124141).
2025-02-03Desugars contract into the internal AST extensionsFelix S. Klock II-0/+5
Check ensures on early return due to Try / Yeet Expand these two expressions to include a call to contract checking
2025-02-02Rollup merge of #134272 - RalfJung:destabilize-rustc_encodable_decodable, ↵Matthias Krüger-2/+0
r=oli-obk Remove rustc_encodable_decodable feature This has been shown in future-compat reports since Rust 1.79 (https://github.com/rust-lang/rust/pull/116016), released June 2024. Let's see if crater still finds any issues. Part of https://github.com/rust-lang/rust/issues/134301. Cc ``@rust-lang/libs-api``
2025-01-22Point at invalid utf-8 span on user's source codeEsteban Küber-0/+1
``` error: couldn't read `$DIR/not-utf8-bin-file.rs`: stream did not contain valid UTF-8 --> $DIR/not-utf8-2.rs:6:5 | LL | include!("not-utf8-bin-file.rs"); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | note: `[193]` is not valid utf-8 --> $DIR/not-utf8-bin-file.rs:2:14 | LL | let _ = "�|�␂!5�cc␕␂��"; | ^ = note: this error originates in the macro `include` (in Nightly builds, run with -Z macro-backtrace for more info) ``` When we attempt to load a Rust source code file, if there is a OS file failure we try reading the file as bytes. If that succeeds we try to turn it into UTF-8. If *that* fails, we provide additional context about *where* the file has the first invalid UTF-8 character. Fix #76869.
2025-01-14remove Rustc{En,De}codable from library and compilerRalf Jung-2/+0
2024-12-18Re-export more `rustc_span::symbol` things from `rustc_span`.Nicholas Nethercote-1/+1
`rustc_span::symbol` defines some things that are re-exported from `rustc_span`, such as `Symbol` and `sym`. But it doesn't re-export some closely related things such as `Ident` and `kw`. So you can do `use rustc_span::{Symbol, sym}` but you have to do `use rustc_span::symbol::{Ident, kw}`, which is inconsistent for no good reason. This commit re-exports `Ident`, `kw`, and `MacroRulesNormalizedIdent`, and changes many `rustc_span::symbol::` qualifiers in `compiler/` to `rustc_span::`. This is a 200+ net line of code reduction, mostly because many files with two `use rustc_span` items can be reduced to one.
2024-11-27update cfgsBoxy-1/+1
2024-10-24s/SmartPointer/CoerceReferent/gDing Xiang Fei-1/+1
move derive_smart_pointer into removed set
2024-10-11Single commit implementing the enzyme/autodiff frontendManuel Drehwald-0/+3
Co-authored-by: Lorenz Schmidt <bytesnake@mailbox.org>
2024-09-09bootstrap `naked_asm!` for `compiler-builtins`Folkert de Vries-0/+1
in this commit, `naked_asm!` is an alias for `asm!` with one difference: `options(noreturn)` is always enabled by `naked_asm!`. That makes it future-compatible for when `naked_asm!` starts disallowing `options(noreturn)` later.
2024-08-16Add `warn(unreachable_pub)` to `rustc_builtin_macros`.Nicholas Nethercote-0/+1
2024-07-30Auto merge of #128083 - Mark-Simulacrum:bump-bootstrap, r=albertlarsan68bors-1/+0
Bump bootstrap compiler to new beta https://forge.rust-lang.org/release/process.html#master-bootstrap-update-t-2-day-tuesday
2024-07-29Reformat `use` declarations.Nicholas Nethercote-1/+2
The previous commit updated `rustfmt.toml` appropriately. This commit is the outcome of running `x fmt --all` with the new formatting options.
2024-07-28step cfg(bootstrap)Mark Rousskov-1/+0
2024-07-17Split part of `adt_const_params` into `unsized_const_params`Boxy-0/+1
2024-06-25`sudo CI=green` && Review changes <3xFrednet-1/+1
2024-06-25RFC 2383: Stabilize `lint_reasons` :tada:xFrednet-1/+1
2024-06-24SmartPointer derive-macroXiangfei Ding-0/+1
Co-authored-by: Wedson Almeida Filho <walmeida@microsoft.com>
2024-06-12Use `tidy` to sort crate attributes for all compiler crates.Nicholas Nethercote-2/+4
We already do this for a number of crates, e.g. `rustc_middle`, `rustc_span`, `rustc_metadata`, `rustc_span`, `rustc_errors`. For the ones we don't, in many cases the attributes are a mess. - There is no consistency about order of attribute kinds (e.g. `allow`/`deny`/`feature`). - Within attribute kind groups (e.g. the `feature` attributes), sometimes the order is alphabetical, and sometimes there is no particular order. - Sometimes the attributes of a particular kind aren't even grouped all together, e.g. there might be a `feature`, then an `allow`, then another `feature`. This commit extends the existing sorting to all compiler crates, increasing consistency. If any new attribute line is added there is now only one place it can go -- no need for arbitrary decisions. Exceptions: - `rustc_log`, `rustc_next_trait_solver` and `rustc_type_ir_macros`, because they have no crate attributes. - `rustc_codegen_gcc`, because it's quasi-external to rustc (e.g. it's ignored in `rustfmt.toml`).
2024-04-30Remove `extern crate tracing` from numerous crates.Nicholas Nethercote-4/+0
2024-04-26Move some functions from `rustc_expand` to `rustc_builtin_macros`.Nicholas Nethercote-1/+1
These functions are only used in `rustc_builtin_macros`, so it makes sense for them to live there. This allows them to be changed from `pub` to `pub(crate)`.
2024-04-25Name the field in `Expander`.Nicholas Nethercote-2/+2
For code clarity.
2024-04-08Add pattern types to parserOli Scherer-0/+2
2024-03-20Make type_ascribe! not a built-inMichael Goulet-2/+0