With the latest version of Rust (1. proc_macro_span;. 13. Basically whenever I change something, the whole function is marked as problematic. It errors out when encountering #[feature(proc_macro_span_shrink)], but it can be very easily fixed by switching the toolchain to stable: rustup default stable. You can tell that your command isn't doing what you expect because the output says that your code is being. Is there something else that has to be enabled or installed to turn this on? The User Manual doesn't mention anything else. 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. Returns None if self and other are from different files. dump_mono_stats_format 1. This is the git submodule => git subtree move. Types from proc_macro are entirely specific to procedural macros and cannot ever exist in code outside of a procedural macro. Access private key data account or program from within Anchor program. So far my attempts have failed. Proc macro shim. 9. 1. Most of the time you want to use the macros. This setting is also implied if proc-macro-hack was detected. Syn operates on the token representation provided by the proc-macro2 crate from crates. e. jghodd, there's a chance that you locally compiled rust, then your libllvm-13 got updated and now you have to recompile your rust to make it working again. py --board=nrf52840_dongle_dfu --erase_storage --programmer=nordicdfu", it goes wrong showing "error[E0635]: unknown feature 'proc_macro_span_shrink'". Each rule has two parts: a matcher, describing the syntax that it matches, and a transcriber , describing the syntax. In the Cargo. 2. We then add the required dependencies for writing a procedural macro in Rust. 13. rust; Share. com> - 1. cargo/registry/src/rsproxy. 0 error[E0635]: unknown feature `proc_macro_span_shrink` --> /home/temaklin. IMO, it's always good to follow the latest Polkadot release CI's Rust toolchain. 1. source. dylib_lto 1. call(Ident::parse_any) when parsing to match the behaviour of Ident::new. toml文件中的依赖项，但该错误并没有告诉我是哪. Ah, I used the "full" feature set from Tokio. Meanwhile proc_macro2. 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. 2. extern crate proc_macro; use syn:: {parse_macro_input, DataEnum, DataUnion, DeriveInput, FieldsNamed, FieldsUnnamed}; use regex::Regex; extern crate. 45. What is confusing to me is that this should have been fixed by dtolnay/proc-macro2#356, which shipped in proc-macro2 1. A-macros Area: All kinds of macros (custom derive, macro_rules!, proc macros, . Improve this answer. The two new procedural macro kinds are:. Merged. nix you can see we set up these env vars:. before () and span. 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 method is available when building with a nightly compiler, or when building with rustc 1. 1 Answer. 0" [lib] proc-macro =. 0. cf_protection 1. {span => | ^^^^^ ambiguous name | = note: ambiguous because of a conflict between a `macro_rules` name and a non-`macro_rules` name from another module note: `parse_quote_spanned` could refer to the macro defined here jghodd, there's a chance that you locally compiled rust, then your libllvm-13 got updated and now you have to recompile your rust to make it working again. Identifiers created with this span will be resolved as if they were written directly at the macro call location (call-site hygiene) and other code at the macro call site will be able to refer to them as well. sysroot": "/path/to/sysroot" with the output of that command fixed the problem, I just had to restart rust-analyzer afterwards. 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. At its core, rust-analyzer is a library for semantic analysis of Rust code as it changes over time. Reload to refresh your session. debug_info_for_profiling 1. The Most Interesting Articles, Mysteries and Discoveries. 60. 59 Compiling getrandom v0. You signed out in another tab or window. toml文件中的依赖项，但该错误并没有告诉我是哪. Try setting the environment variable RA_LOG (either via terminal or by specifying rust-analyzer. ## 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 · source. rs). 29+ without semver exempt features. 58/src/lib. ) A-proc-macros Area: Procedural macros C-enhancement Category: An issue proposing an enhancement or a PR with one. The crate name is with dash and that's how it needs to be specified in Cargo. Basically whenever I change something, the whole function is marked as problematic. 2. Reload to refresh your session. For more information about this error, try `rustc --explain E0463`. Use this tag for questions about code written in Rust. Any ideas? cargo build $ cargo build --release Compiling typenum v1. Custom #[derive] macros that specify code added with the derive attribute used on structs and. An attribute is either active or inert. We’ve used macros like println! throughout this book, but we haven’t fully explored what a macro is and how it works. Admin message Due to an influx of spam, we have had to impose restrictions on new accounts. A support library for macro authors when defining new macros. This happens when initialising a project with anchor. . samuelpilz March 20, 2020, 11:25am 1. Procedural macros must be defined in a crate with the crate type of proc-macro. io-6f17d22bba15001fproc-macro2. You signed out in another tab or window. 10. You signed in with another tab or window. 278. check_cfg 1. Empowering everyone to build reliable and efficient software. Syntax is described in the next section below. 2. I am breaking my head against the wall trying to figure this one out. hongfish opened this issue on Oct 27, 2022 · 3 comments. Compiler flags; 1. 0. rs. Though I know how give out errors using Span after it has been parsed, I am not able to figure how to do it during a parse. 9 Compiling num-traits v0. Compiler flags; 1. 🔬 This is a nightly-only experimental API. The span of the invocation of the current procedural macro. lizhuohua added a commit that referenced this issue on Nov 11, 2022. I'm trying to test building just librustc_llvm for the purposes of git bisecting, but am getting the following error: . 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. 47 Compiling proc-macro-hack v0. Reference Make software development more efficient, Also welcome to join our telegram. Switching to the pre-release version of rust-analyzer fixed this for me on rustc 1. push (1); Type inference can go back and assign the right type to xs. If you want to do this yourself, have more flexibility or learn, you can write a procedural macro that will parse a backtrace (obtained from inside the function that. 8. If it's provided by rustup, it adds the rust-analyzer component as needed. I'm not familiar w/ the rust build system, but I was able to fix this. rs and main. Feb 27, 2017 at 12:13. access address lookup table on chain. I was expanding the struct within the #[component] macro but leaving as-is the #[prop] attribute. 63. cf_protection 1. check_cfg 1. This caused the compiler to search for meaning for. Empowering everyone to build reliable and efficient software. //# TYPE auth_errors. 0. rs. into() } Which reports exactly where the user is passing a literal, which is a feature not allowed in the arguments of the attribute. Identifiers with this span will not be able to reference things defined outside or be referenced by things outside of the invocation. rs:92:30 | 92 | feature(proc_macro_span, proc_macro_span_shrink) | ^^^^^ For more information about this error, try `rustc --explain E0635`. 1 Answer. Featured on Meta Update: New Colors Launched. debug_info_for_profiling 1. A wrapper around the procedural macro API of the compiler’s proc_macro crate. . 字符串 我通过将我的rust版本设置为特定的较旧的夜间构建版本找到了一个修复方法，但这对另一个项目不起作用，我真的想要一个更好的解决方案。我假设我使用的是某个东西的过时版本，或者我可以删除cargo. rs: #! [feature (proc_macro_span) error [E0635]: unknown feature `proc_macro_span`. 0 Compiling version_check v0. This setting is implied if #[proc_macro_error] is applied to a function marked as #[proc_macro], #[proc_macro_derive] or #[proc_macro_attribute]. [root@qlh liquid]# cargo build Compiling proc-macro2 v1. pub fn source (&self) -> Span. Panics. 字符串 我通过将我的rust版本设置为特定的较旧的夜间构建版本找到了一个修复方法，但这对另一个项目不起作用，我真的想要一个更好的解决方案。我假设我使用的是某个东西的过时版本，或者我可以删除cargo. debug_info_for_profiling 1. profile 1. 2. proc-macro2 supports exporting some methods from proc_macro which are currently highly unstable, and may not be stabilized in the first pass of proc_macro stabilizations. Language features 2. cargo egistrysrcindex. 279. TrendRadars. 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. The tracking issue for this feature is: #87552#87552Tour Start here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site## Problem `cargo +nightly doc` is giving a lot of warnings: broken links, naked URLs, etc. It parses a TokenStream into a Rust Abstract Syntax Tree (AST), which is easier to work with than "raw tokens". 12. branch_protection 1. serverFromRustup is that we. error: could not compile `proc-macro2` (lib) due to. You can also generate custom functions if you wanted to. 59/src/lib. 11. proc_macro_internals; 3. Feature Name: proc_macro_sandbox Start Date: 2023-08-20 Summary Procedural macro crates can opt-in to precompilation to WebAssembly as part of the publish process. 1rust-lang / rust Public. to_string () != "bool" { quote_spanned! { ty. Procedural Macros are really hard to understand. toml. check_cfg 1. Syn is a parsing library for parsing a stream of Rust tokens into a syntax tree of Rust source code. Panics if called from outside of a procedural macro. rs is an unofficial list of Rust/Cargo crates, created by. proc_macro_hygiene. This enables code using Syn to execute outside of the context of a procedural macro, such as in unit tests or build. 1. The Unstable Book; 1. The expander is implemented similarly in both Rust Analyzer and IntelliJ Rust. expr_ty_adjusted(lhs/rhs), and see if there's an impl. Tracking issue: rust-lang/rust#87552Solved. rs and main. 62. S-tracking-needs-summary It's hard to tell. 15 Compiling hashbrown v0. I am writing a library which includes a custom derive macro with custom attributes. Fixes Issue #7 #9. Switching to the pre-release version of rust-analyzer fixed this for me on rustc 1. Convert proc_macro2::Span to proc_macro::Span. //! //! 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. Learn more about TeamsWhen 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). By default, nested invocations are not supported i. Unlike proc_macro2::Span, the proc_macro::Span type can only exist within the context of a procedural macro. PicoCTF - Glitch cat 30 Aug 2022 picoCTF Challenge Tags. #11800 fix #[macro_use] no longer importing non-macro_rules! macros. 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. . io. This is the output when compiling: >>> rust-server 0. 61 with latest r-a. I also had to pin proc-macros2 at =1. export_executable_symbols 1. When rust-analyzer proc-macros are enabled, apparently the macro gets called for every keystroke, so if I edit the name of the struct to PersonTwo, I end up with Person, PersonT. And it runs on all platforms Rust supports. rust-analyzer Add a standalone rust-analyzer-proc-macro-srv binary. span. Meanwhile proc_macro2 types. rs. C-tracking-issue Category: A tracking issue for an RFC or an unstable feature. Anchor build fails due to a current Rust version (1. 10. dump_mono_stats 1. 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. This enables code using Syn to execute outside of the context of a procedural macro, such as in unit tests or build. 6 Compiling syn v1. 8. Repeat with any proc macros that need expanding (which may spawn several toolchains, if different cargo workspaces. error[E0635]: unknown feature proc_macro_span_shrink. 64. Reload to refresh your session. io-6f17d22bba15001f/proc-macro2-1. 0-3 - Backport a rebuild fix for rust#48308. 3 Compiling lazy_static v1. In many cases, a macro can change the inferred types. Fortunately, there is a way! The interpolation via # in quote! works via the ToTokens trait. 54. The trait uses types from proc-macro2 instead of the standard proc-macro one. crates. The term macro refers to a family of features in Rust: declarative macros with macro_rules! and three kinds of procedural macros:. The span for the origin source code that self was generated from. The lack of documentation in the hir and lint is resulting in a lot of slow println! exploration. 0 nightly build. 4 Compiling lock_api v0. crates. I do not have a lot of experience using proc_macro, but based on this answer I found it was easy to adapt it to manually replace literals in the token tree without the use of the syn or quote crates. 2. 61 with latest r-a. g. 3. source. This method is available when building with a nightly compiler, or when building with rustc 1. strip 1. unknown feature `proc_macro_span_shrink`//could not compile xxx lib问题解决，此解决方案不管是在哪一个系统都可以解决此问题。 rust 开发语言 一个在本地很久没有编译过的项目，或者说从网上下载下来了一个开源的项目，只要开始编译就会报unknown feture的错误，或者could not. In fact the readme specifically states it's great for using in unit tests. 25. You signed in with another tab or window. I've only written a few lines of Rust, and never a macro, so this is based on reading the relevant documentation and following the examples of the other macros in the directory (namely serial. Actually it does. What is confusing to me is that this should have been fixed by dtolnay/proc-macro2#356, which shipped in proc-macro2 1. A wrapper around the procedural macro API of the compiler's proc_macro crate. Crate proc_macro. Trevor Trevor. rustup default nightly-2022-07-24 && rustup target add wasm32-unknown-unknown. The cfg and cfg_attr attributes are active. i'm tring to making a time_it attribute like macro that can calculate the time of function execution like python decorators, i think i follow the steps in the rust book but the rust book is not clear enough it only goes with Derive macro only and skip the others. Compiling ppv-lite86 v0. 8. 1. 29+ without semver exempt features. 15 Compiling crossbeam-utils v0. io - and second underscore - this is the crate name in Rust. The # [proc_macro] for function-like macros and # [proc_macro_derive] for custom derives work the same, except they only have one TokenStream argument. into_compile_error(). I want to output the cargo build log to a file, then I use the command like this: cargo build --verbose > build. 🔬 This is a nightly-only experimental API. Closed drharryhe opened this issue Sep 11, 2023 · 4 comments Closed [bug] unknown feature proc_macro_span_shrink #7805. 71. With the current nightly version rustc 1. rust-proc-macros; rust-analyzer; or ask your own question. This causes problems in environments where that configuration may change whether or not backtrace is available (or compiles):warning: flag `-Z sparse-registry` has been stabilized in the 1. When called from within a procedural macro in a nightly compiler, Spanned will use join to produce the intended span. We call such extensions "macros by example" or simply "macros". 19 is dedicated to macros. Attribute-like macros that define custom attributes usable on any item. 9 Compiling num-traits v0. The tracking issue for this feature is: #54725#54725pub fn source (&self) -> Span. io-6f17d22bba15001f/proc-macro2-1. Teams. cargo/registry/src/index. Diagnostic::spanned(span, Level::Error, text). I was told that the rustup installer script at sh. Rust. rust: 1. Unlike a declarative macro, a procedural macro takes the form of a Rust function taking in a token stream(or two) and outputting a token stream. You switched accounts on another tab or window. The span expression should be brief -- use a variable for anything more than a few characters. You signed in with another tab or window. I also had to pin proc-macros2 at =1. 9. I think we've seen this recently, but I don't remember if we tried to minimize this 编译liquid合约出错 #20. toml directly. But crate names with dashes become underscores for imports. 0. For this I use darling. These flavors mainly refer to the ways in which macros are implemented, not how they are used. You signed in with another tab or window. The feature detection just checks RUSTFLAGS directly, which does not include configuration added by Cargo itself. Most of the time you want to use the macros. . Open Source. The only happens if I have proc macros and build scripts enabled. Which seems to be using cargo. Connect and share knowledge within a single location that is structured and easy to search. With the changes from #1555 we are now attempting to build with something equivalent to what will be the 1. 0. rs use proc_macro::TokenStream; use quote::quote; use syn::parse_macro_input; #[proc_macro_derive(use_self)] pub fn use_self. Crate proc_macro. extern_options 1. , when not using the unstable. If this Span wasn’t generated from other macro expansions then the return value is the same as *self. Hello It looks like the latest version of Rust is causing some issues when compiling jtk. 0. from the proc_macro2 docs. cargo/registry/src/index. Unstable Features. Compiler flags; 1. This RFC proposes an evolution of Rust's procedural macro system (aka syntax extensions, aka compiler plugins). extraEnv, as explained in the manual) to flycheck=info. If I'm wrong, feel free to correct me. However, this scheme breaks if the runtime crate is. (&self, other:MacroTranscriber : DelimTokenTree. 0. 🔬 This is a nightly-only experimental API. Converting rust-analyzer to a git subtree solves that problem: proc-macro-srv still lives under rust-analyzer, but maintaining the "bridge" aspect of it falls on rust-lang/rust contributors. server that's just the "rustup" string, but using an in-band value / picking "rustup" as a niche feels odd. Context: input of proc_macro_attribute have invalid (null) span for some input. 0-nightly (cae0791da 2023-10-05). 6. . Data structures — Syn provides a complete syntax tree that can represent any valid Rust source code. lizhuohua completed in #9 on Nov 11, 2022. Panics if called from outside of a procedural macro. emit(); The problem is, the spanned method takes a proc_macro2::Span as an argument, a struct which has no constructor available. " Eventually, procedural macros will allow for all sorts of advanced metaprogramming in Rust, but today, they're only for custom derive. Unlike proc_macro2::Span, the proc_macro::Span type can only exist within the context of a procedural macro. No other public items may be declared in proc-macro crates, but private items are fine. Alternatively if you look in shell. 0. enable": true in both my User and Workspace settings, but I still get the unresolved-proc-macro lint in the editor. proc-macro2. For the proc_macro_span_shrink error, see #113152. rs and main. When emitting PTX code, all vanilla Rust functions (fn) get translated to "device" functions. You can sort of think of procedural macros as functions from an AST to another AST. Interesting results though, that's 4 hours faster still so far. . . 60. 0. 2k;. Panics if called from outside of a procedural macro. I've opened dtolnay/proc-macro2#175 to see if we can get a. 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 developers error[E0635]: unknown feature `proc_macro_span_shrink` --> /home/runner/. Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community. Share. 0 stable. rs: #! [feature (proc_macro_span) error [E0635]: unknown feature. 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. Reload to refresh your session. A support library for macro authors when defining new macros. However, with rust edition 2018 and dropping extern crate declarations from lib. 0 Compiling proc-macro2 v1. 70. 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. Reload to refresh your session. move_size_limit 1. 8. nvim. may solve your problem. 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. Access private key data account or program from within Anchor program. 0) I'm getting this error: error[E0554]: `#![feature]` may not be used on the stable release channel --> hapl. They are also uses as hubs connecting to other relevant issues, e. cargo/registry. You switched accounts on another tab or window. use proc_macro::{TokenStream, TokenTree, Literal}; use. cargo. use proc_macro::TokenStream; use syn:: {parse_macro_input, LitStr}; use quote::quote; # [proc_macro] pub fn my_macro (input. NOTE: Rust nightly toolchain is required.