proc_macro_diagnostic; 3. You signed in with another tab or window. This allows you to inspect the Rust code at compile time. However, we can't yet expand macros into statements on stable -- that's what the #![feature(proc_macro_hygiene)] is for. About tracking issues. toml. 0-nightly as long as you enable feature (extern_absolute_paths) and use an absolute path for your attribute macro. Here, I use the s! macro in TensorBase as an example, which makes your writing C, Java like codes in your Rust sources in a free. Referenceerror[E0635]: unknown feature `proc_macro_span_shrink` Recently we have received many complaints from users about site-wide blocking of their own and blocking of their own activities please go to the settings off state,. You. proc_macro_span;. dump_mono_stats_format 1. lang_items. 47 error[E0635]: unknown feature `proc_macro_span_shrink` --> . 147 Compiling proc-macro2 v1. A support library for macro authors when defining new macros. Everything implementing that trait can be interpolated. 0. alexcrichton added a commit to alexcrichton/rust that referenced this issue Oct 1, 2018. Attribute macros - # [CustomAttribute] Procedural macros allow you to run code at compile time that operates over Rust syntax, both consuming and producing Rust syntax. This library, provided by the standard distribution, provides the types consumed in the interfaces of procedurally defined macro definitions such as function-like macros #[proc_macro], macro attributes #[proc_macro_attribute] and custom derive attributes#[proc_macro_derive]. I found some other type-directed lints to use as a reference. Open. You signed out in another tab or window. rust-analyzer Introduce the sysroot ABI (disabled by default) rust Convert rust-analyzer to an in-tree tool. 4. 0. You signed out in another tab or window. 29+ without semver exempt features. /x. pub fn report_literals_not_allowed(ident: &str, s: &Lit) -> TokenStream { syn::Error::new_spanned(ident, s. extern_options 1. More info shows below: info: Building example erase_storage The proc-macro2 crate is using unstable features when it detects nightly. Compile error: rror[E0635]: unknown feature `proc_macro_span_shrink` --> /Users/xus/. 2. 6. Create an array of two elements 1) Identifier fooIdent (Ident::new ("foo", Span::mixed_site ())) 2) A group with round brackets in which we place the macro body Group (Group::new (Delimiter::Parenthesis, body)). rs is an unofficial list of Rust/Cargo crates, created by. Syn operates on the token representation provided by the proc-macro2 crate from crates. This library serves two purposes: Bring proc-macro-like functionality to other contexts like build. Procedural macros, on the other hand, allow you to operate on the abstract syntax tree (AST) of the Rust code it is given. json rust-toolchain. stable version below. No branches or pull requests. 11. That process is called the expander. I want to generate prometheus metric by just annotating variables. abi_amdgpu_kernel 2. Possible Solution(s) I searched Cargo open issues for macro-backtrace (as well as closed issues), and based on titles, this was the only potentially relevant ticket:. location_detail 1. (see dtolnay/proc-macro2#391 for additional context. Procedural macros allow you to run code at compile time that operates over Rust syntax, both consuming and producing Rust syntax. json rust-toolchain. emit(); The problem is, the spanned method takes a proc_macro2::Span as an argument, a struct which has no constructor available. value () function will give you a String with the contents of that literal. 278. 1. push (1); Type inference can go back and assign the right type to xs. You signed out in another tab or window. We expect to remove the limitation that the attribute must be specified with an absolute. toml file, add the following: [lib] proc-macro = true [dependencies] quote = "1" proc-macro2 = "1. The tracking issue for this feature is: #54725#54725It seems like just the presence of somehow affects how the Derive macros 1. hongfish opened this issue on Oct 27, 2022 · 3 comments. The borsh and yew macros work fine for me on rustc 1. Feature gate: #! [feature (proc_macro_span_shrink)] This feature adds span. io-6f17d22bba15001f/proc-macro2-1. Until Span::source_file() from the proc-macro crate becomes stable, any procedural macros that need to do filesystem operations will resolve paths relative to the current directory. rs and main. 75. json And it turns out that this is the same thing that has happened with your from_byte identifier: your code was emitting a from_byte with private hygiene / a def_site() span, which is something that normally never happens for method names when using classic macros, or classic proc-macros (i. An attribute is either active or inert. You switched accounts on another tab or window. rust-analyzer Add an environment variable to test proc macros against various toolchains. 1. rs","contentType":"file"},{"name":"extra. This setting is implied if #[proc_macro_error] is applied to a function marked as #[proc_macro], #[proc_macro_derive] or #[proc_macro_attribute]. This library serves two purposes: Bring proc-macro-like functionality to other contexts like build. 56. Create a crate of type proc_macro, i. The downside of having an option like rust-analyzer. NOTE: Rust nightly toolchain is required. 64. call(Ident::parse_any) when parsing to match the behaviour of Ident::new. 4 Compiling lock_api v0. The span of the invocation of the current procedural macro. 0. 12. During attribute processing, active attributes remove themselves from the thing they are on while inert attributes stay on. mentioned this issue. When nightly is enabled, however, the quote! macro is actually under the hood using Span::def_site() everywhere (it was basically just ignored without the nightly feature). the code emitted by a proc-macro-hack macro invocation cannot contain recursive calls to the same proc-macro-hack macro nor calls to any other proc-macro-hack macros. Reload to refresh your session. Anchor build fails due to a current Rust version (1. Steps to reproduce: VSCode Version 1. cargo/registry/src/index. A-proc-macros Area: Procedural macros A-resolve Area: Path resolution C-feature-request Category: A feature request, i. Hi, Just a heads up, it looks like there is an issue with the proc_macro_span_shrink feature in the rust 1. Cannot build - unknown feature `proc_macro_span_shrink` 2. Syntax is described in the next section below. 72. This setting is also implied if proc-macro-hack was detected. syn fails to compile on raspberry pi (ARMv7) rust-lang/rust#56501 syn fails to compile on raspberry pi (ARMv7) Cannot compile proc-macro2 v1. //! //! This library, provided by the standard distribution, provides the types //! consumed in the interfaces of procedurally defined macro definitions such as //! function-like macros `#[proc_macro]`, macro attributes `#[proc_macro_attribute]` and //! custom derive. 2. The expander is implemented similarly in both Rust Analyzer and IntelliJ Rust. 43 : cargo update -p proc-macro2 --precise 1. I tried this code: // macros/src/lib. 12. S-tracking-needs-summary It's hard to tell. 281. SpanData is 16 bytes, which is too big to stick everywhere. check_cfg 1. Rusty_retiree_5659. In cargo, it is possible to conditionally activate a feature on a dependency based on the main crate features, using the crate/feature syntax: [features] # Enables parallel processing support by. But crate names with dashes become underscores for imports. Use input. Syntax. 4 Compiling once_cel. Function-like macro s that look like. proc_macro_internals; 3. 1 Answer. 4. 3 Compiling lazy_static v1. Reload to refresh your session. This crates a pull for languages to naturally evolve more complex macro systems than can be. : pub fn source_text (&self) -> Option < String > [src] [ −] 🔬 This is a nightly-only experimental API. 0" First, we declare our crate as a procedural macro crate. 5. Communication between the IDE and the expander is performed using full data serialization. By default, nested invocations are not supported i. Can anybody help me with my issue?. What is confusing to me is that this should have been fixed by dtolnay/proc-macro2#356, which shipped in proc-macro2 1. 70. Meanwhile proc_macro2 types. Usually, the way to go is to have a Cargo feature in your macro that will change how it expands the code. 9%+) of SpanData instances can be made to fit within. Admin message Due to an influx of spam, we have had to impose restrictions on new accounts. Closed. When running deploy script(develop branch) to build openSK or erase_storage for nrf52840_dongle with ". The Unstable Book; 1. In an attempt to execute #5 , I've begun on this skeleton of a SPI-implementing macro. #11806 fix async block type inference using containing function return type. After a cargo clean && cargo build: error[E0422]: cannot find struct, variant or union type `LineColumn` in. } macro to write Python code directly in your Rust code. 71. 0 (90c541806 2023-05-31) I get the fol. Rust. The last dependabot PR for proc-macro2 had been closed without comment. rs and main. samuelpilz March 20, 2020, 11:25am 1. Perhaps my favorite feature in the Rust 2018 edition is procedural macros. 0-nightly (839e9a6e1 2023-07-02) You signed in with another tab or window. move_size_limit 1. e. 0. 73. A wrapper around the procedural macro API of the compiler's proc_macro crate. It is not necessarily limits to generating methods for the enum itself. Copy link Owner Author. . When I view cargo tree I only see dependencies on 1. Yes; I've recently downloaded the latest plugin version of mason. You switched accounts on another tab or window. A wrapper around the procedural macro API of the compiler’s proc_macro crate. "] and there are various different values. CI is currently failing the documentation build due to this error: error[E0635]: unknown feature `proc_macro_span_shrink` --> /home/runner/. IMO, it's always good to follow the latest Polkadot release CI's Rust toolchain. Examples. . Break your problematic macros down into bite sized pieces that you can shove into a test. rs. #11187 rename and use the 1. report_time 1. This is the git submodule => git subtree move. When called from within a procedural macro in a nightly compiler, Spanned will use join to produce the intended span. This enables code using Syn to execute outside of the context of a procedural macro, such as in unit tests or build. 4. 4. Question: how to re-write this macro in normal module? It sounds a bit like you're asking how you can express it as a macro in a "normal" module. At its core, rust-analyzer is a library for semantic analysis of Rust code as it changes over time. This library, provided by the standard distribution, provides the types consumed in the interfaces of procedurally defined macro definitions such as function-like macros # [proc_macro], macro attributes # [proc_macro_attribute] and custom derive attributes. e. Types from proc_macro are entirely specific to procedural macros and cannot ever exist in code outside of a procedural macro. A substitute implementation of the compiler's `proc_macro` API to decouple token-based libraries from the procedural macro use case. A span that represents macro_rules hygiene, and sometimes resolves at the macro definition site (local variables, labels, $crate) and sometimes at the macro call site. 3. Wei's unknown feature `proc_macro_span_shrink` 06 Oct 2022 solana blockchain I encounter below error when run command anchor build. dwarf_version 1. They look and behave similarly to a match expression. Cannot build - unknown feature `proc_macro_span_shrink` 1. 0 (f1edd0429 2021-11-29) I've verified that proc macro support is enabled by looking at the client logs: INFO [1/1/2022. 9 Compiling num-traits v0. . Access private key data account or program from within Anchor program. Judging by this GitHub issue, and in particular this comment, it seems that proc macro expansion is quite dependent on the version of the Rust compiler. Setting. 29+ without semver exempt features. macro_rules allows users to define syntax extension in a declarative way. adding use proc_macro2::Span; makes this compile successfully. lib. 2. This RFC is to gather final feedback on stabilizing the new feature resolver in Cargo. If this Span wasn’t generated from other macro expansions then the return value is the same as *self. Building for aarch64-unknown-linux-gnu a program that depends on proc-macro2. This RFC specifies syntax for the definition of procedural macros, a high-level view of their implementation in the compiler, and outlines how they interact with the compilation process. Technologyproc_macro/bridge: stop using a remote object handle for proc_macro Ident and Literal rust#98189. 6. When running cargo build I get the following error: Compiling proc-macro2 v1. 60. 9. We call such extensions "macros by example" or simply "macros". In my case, i run these 3 commandsProcedural macros must be defined in their own crates. 0. This happens when initialising a project with anchor. ## Summary of changes * update the `proc-macro2` dependency so that it can compile on latest Rust nightly, see dtolnay/proc-macro2#391 and dtolnay/proc-macro2#398 * allow the `private_intra_doc_links` lint, as linking to something that's private is always more useful. 0. The # [proc_macro] for function-like macros and # [proc_macro_derive] for custom derives work the same, except they only have one TokenStream argument. Identifiers with this span will not be able to reference things defined outside or be referenced by things outside of the invocation. Error error[E0635]: unknown feature `proc. You can use Rust workspaces to organize all these projects. 0. rs, and we avoid needing incompatible ecosystems for. Span only takes up 8 bytes, with less space for the length, parent and context. 2 cacilhas cacilhas NONE Posted 2 months ago error [E0635]: unknown feature `proc_macro_span_shrink` #113300 error [E0635]: unknown feature. Types from proc_macro are entirely specific to procedural macros and cannot ever exist in code outside of a procedural macro. By developing foundational libraries like syn and quote against proc_macro2 rather than proc_macro, the procedural macro ecosystem becomes easily applicable to many other use cases and we avoid reimplementing non-macro equivalents of those libraries. src_hash_algorithm 1. Anchor build fails due to a current Rust version (1. #11238 shrink the span of errors from attribute macros and derives. Reload to refresh your session. 0. rs","path. Trevor Trevor. The Unstable Book; 1. How to pin-point where parsing failed and give appropriate error?A-macros Area: All kinds of macros (custom derive, macro_rules!, proc macros, . Building lighthouse on later versions of nightly fail due to proc-macro2. rs). I also had to pin proc-macros2 at =1. Meanwhile proc_macro2 types. This preserves the original source code, including spaces and comments. 8. You signed in with another tab or window. @Alvra, by macro_rules you can't know about enum fields. rs use proc_macro::TokenStream; use quote::quote; use syn::parse_macro_input; #[proc_macro_derive(use_self)] pub fn use_self. Panics. Active and inert attributes. 43 . Anchor Build Error: failed to select a version for the requirement `aho-corasick = "^1. span () => compile_error! ("expected bool"); } } else { quote! { const #name: #ty = false; } }; For your faulty input, the compiler now prints this:Q&A for Solana software users and developersIf you want a bit more pure rust then you can enable the feature with-parity-db and it won't use rocksdb. 23 Compiling unicode-ident v1. abi_efiapi 2. Syn operates on the token representation provided by the proc-macro2 crate from crates. This library serves two purposes: Bring proc-macro-like functionality to other contexts like build. It will be a normal (non-macro) project that your macro will refer to. This library, provided by the standard distribution, provides the types consumed in the interfaces of procedurally defined macro definitions such as function-like macros # [proc_macro], macro attributes # [proc_macro_attribute] and custom. toml文件中的依赖项，但该错误并没有告诉我是哪. 9. I want to output the cargo build log to a file, then I use the command like this: cargo build --verbose > build. cargo/registry/src/index. Reload to refresh your session. It is. You should see: stable-x86_64-pc-windows-gnu stable-x86_64-pc-windows-msvc (default) Try to cargo build and it should work like a charm. Improve this question. In the Cargo. io-6f17d22bba15001f/proc-macro2. 0). rs and main. You signed in with another tab or window. This library, provided by the standard distribution, provides the types consumed in the interfaces of procedurally defined macro definitions such as function-like macros #[proc_macro], macro attributes #[proc_macro_attribute] and custom derive attributes#[proc_macro_derive]. Use an edition specific tag for questions that refer to code which requires a particular edition, like [rust-2018]. 5. This library, provided by the standard distribution, provides the types consumed in the interfaces of procedurally defined macro definitions such as function-like macros # [proc_macro], macro attributes # [proc_macro_attribute] and custom derive attributes # [proc. Returns None if self and other are from different files. I even tried adding crate-type = ["rlib", "staticlib", "cdylib"] and to lib section and it still succeeded. Procedural macros must be defined in a crate with the crate type of proc-macro. 9. Get early access and see previews of new features. Ch. Panics if called from outside of a procedural macro. 12. {"payload":{"allShortcutsEnabled":false,"fileTree":{"library/proc_macro/src":{"items":[{"name":"bridge","path":"library/proc_macro/src/bridge","contentType. 7. At present, if a proc_macro emits a warning, it is unconditional as it is not associated with a lint: the user can never silence the warning. You can tell that your command isn't doing what you expect because the output says that your code is being. This topic was automatically closed 90 days after the last reply. 51 somewhere that needs to be bumped to 1. Reload to refresh your session. 0 · source. io-managed service, conceptually similar to docs. md at main · krasimirgg/bootstrap-proc-macro-issueThe nightly has introduced “Procedural Macro Diagnostics” APIs [3] under the feature “proc_macro_diagnostic” as friendly diag-info-show tool which is seamlessly integrated into the proc macro output. 0. Also using winget you can install rust both for msvc or gnu. jghodd commented on 2022-09-04 18:30 (UTC) (edited on 2022-09-04 18:31 (UTC) by jghodd ) Cannot build - unknown feature `proc_macro_span_shrink` 2. This library, provided by the standard distribution, provides the types consumed in the interfaces of procedurally defined macro definitions such as function-like macros # [proc_macro], macro attributes # [proc_macro_attribute] and custom derive attributes. You switched accounts on another tab or window. ⓘLet’s now set up our crate so it can use the procedural macro features. This chapter will introduce Rust's declarative Macro-By-Example system by explaining the system as a whole. crates. I'm not at all familiar with this project, so is there a dependency on proc-macro2 1. Then cargo comes into play. Follow asked May 19 at 14:41. 0. 0-nightly (f3623871c 2023-08-06) $ cargo install taplo-cli --version ^. And it runs on all platforms Rust supports. Motivation. Since the compression program is written in Rust, I need to obtain the file path and cannot use the browser's drag and drop file feature. proc_macro: Fix expand_expr expansion of bool literals rust#98463. derive type macro give you the information about fields in enum/struct/union. . enable": true in both my User and Workspace settings, but I still get the unresolved-proc-macro lint in the editor. Help on spans for proc macros : r/rust. tracing::instrument causes rust-analyzer server to panic with. py build --stage 1 src/librustc_llvm Warning: no rules matched /home/jessic. [bug] unknown feature proc_macro_span_shrink #7805. 768). after. extern crate proc_macro; use syn:: {parse_macro_input, DataEnum, DataUnion, DeriveInput, FieldsNamed, FieldsUnnamed}; use regex::Regex; extern crate. Lib. Business; Politics; Military; Elections; Law; Immigration; Technology. Syntax is described in the next section below. The following snippet fails to compile: playground. With the current nightly version rustc 1. ) A-proc-macros Area: Procedural macros C-enhancement Category: An issue proposing an enhancement or a PR with one. 5. 11. We then add the required dependencies for writing a procedural macro in Rust. toml rust-toolchain src x86_64-unknown-none. Hi wang13245, I checked the issue and and can confirm it is associated with proc-macro2 v1. The tracking issue for this feature is: #54725#54725 pub fn source (&self) -> Span. 🔬 This is a nightly-only experimental API. 12. log. Please let me know if you experience other errors. 11. I'm not familiar w/ the rust build system, but I was able to fix this. Reading The Rust Programming Language's chapter on macros says:. The suggested fix is to keep your rust-analyzer updated. pub fn source_text (&self) -> Option < String > [src] [ −] 🔬 This is a nightly-only experimental API. My project structure, thus, is as follows: ├── pg-worm │ ├── pg-worm-derive │ │ ├──. 29+ without semver exempt features. pub fn f64_suffixed (n: f64) -> Literal. 6. Reload to refresh your session. Description. This new feature resolver introduces a new algorithm for computing package features that helps to avoid some unwanted unification that happens in the current resolver. Reload to refresh your session. An identifier constructed with Ident::new is permitted to be a Rust keyword, though parsing one through its Parse implementation rejects Rust keywords. You signed out in another tab or window. enable": true in both my User and Workspace settings, but I still get the unresolved-proc-macro lint in the editor. check_cfg 1. rust-lang/rust#113152 error[E0635]: unknown feature `proc_macro_span_shrink` --> C:Usersdhorner. 72. If this Span wasn’t generated from other macro expansions then the return value is the same as *self. rs:92:30 | 92 | feature (proc_macro_span, proc_macro_span_shrink) | Just trying to use some p. 0 stable. A wrapper around the procedural macro API of the compiler's proc_macro crate. lizhuohua completed in #9 on Nov 11, 2022. As far as function signatures go, a proc macro is a function from a TokenStream (or two) to another TokenStream, where the output replaces the macro invocation. If it's provided by rustup, it adds the rust-analyzer component as needed. rustup. You are creating identifiers (in particular, f ) by using quote! . This token will. Data structures — Syn provides a complete syntax tree that can represent any valid Rust source code. Reload to refresh your session. It seems that you are using the nightly version of rust, which we don't. Contains a detailed walk-through on how to write a derive macro. Reload to refresh your session. 63. 60+ dtolnay/proc-macro2#391. Please see. rust-proc-macros; rust-analyzer; or ask your own question. //# TYPE auth_errors. I want to write a derive macro which generates following string from below struct. Switching to the pre-release version of rust-analyzer fixed this for me on rustc 1. You signed out in another tab or window. pub fn source (&self) -> Span. 2 BacktraceThe term macro refers to a family of features in Rust: declarative macros with macro_rules! and three kinds of procedural macros: Custom # [derive] macros that specify code added with the derive attribute used on structs and enums. A support library for macro authors when defining new macros. $ rustc -V rustc 1. . The term macro refers to a family of features in Rust: declarative macro s with macro _rules! and three kinds of procedural macro s: Custom # [derive] macro s that specify code added with the derive attribute used on structs and enums.