debug_info_for_profiling 1. 15 Compiling crossbeam-utils v0. I'm not at all familiar with this project, so is there a dependency on proc-macro2 1. To declare your crate as a proc-macro crate, simply add: [lib] proc-macro = true to your Cargo. Compiling ppv-lite86 v0. #11801 avoid returning None from Span::join to fix some. So I used attribute proc macro and used it as a InnerAttribute( just did not want to write the attribute for each single function). cargo +nightly install racer. 7. io-6f17d22bba15001f/proc-macro2-1. 43 due to it needing proc_macro_span_shrink from a later Rust version. 57. Fortunately, there is a way! The interpolation via # in quote! works via the ToTokens trait. The current proc macro system can't even answer reliably simple questions like "does this function return a Result" without horrible hacks. Panics if called from outside of a procedural macro. branch_protection 1. Switching to the pre-release version of rust-analyzer fixed this for me on rustc 1. check_cfg 1. Similar to an answer that was recently given here, you can edit the original function and insert your code at the beginning of it, which will be executed at runtime this time. Unfortunately rust-lang/rust#60289 has revealed that proc-macro2 is using an unstable feature when it's built on nightly, which has broken those CI builds. 5. use proc_macro::{TokenStream, TokenTree, Literal}; use. //# HELP auth label metric_type to create 2nd line. That rendered rust-analyzer unusable in my case. Similarly to macro_rules! macros, they’re more flexible than functions; for example, they can take an unknown number of arguments. 63. toml directly. 12. If this Span wasn’t generated from other macro expansions then the return value is the same as *self. No other public items may be declared in proc-macro crates, but private items are fine. 0. Note that in order for Syn's syntax tree types to provide Debug impls, you will need to set features. 19 is dedicated to macros. 0. At its core, rust-analyzer is a library for semantic analysis of Rust code as it changes over time. 0-nightly (839e9a6e1 2023-07-02) You signed in with another tab or window. dwarf_version 1. 9. dump_mono_stats 1. However, this scheme breaks if the runtime crate is. 0. debug_info_for_profiling 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. Reload to refresh your session. lizhuohua added a commit that referenced this issue on Nov 11, 2022. A new ident can be created from a string using the Ident::new function. I am working on the proc macro workshop and am a little stuck on the builder portion of the workshop. cargo build-bpf rustc version. You can still use the procedural macros file!() and module_path!(). TrendRadars. So I am trying to build a rust project using cargo build and receive: error: failed to run `rustc` to learn about target-specific information Caused by: process didn't exit successfully: `rustc - --crate-name ___ --print=file-names -C -Zshare-generics=y -Csplit-debuginfo=unpacked --crate-type bin --crate-type rlib --crate-type dylib --crate. Using Rust variables. I've opened dtolnay/proc-macro2#175 to see if we can get a. 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. Furthermore, pro. branch_protection 1. 58 Compiling tokio v1. 0. proc-macro2 1. Commit 81891f7 enabled attribute proc macro by default (released in v0. aarch64_ver_target_feature 2. C-tracking-issue Category: A tracking issue for an RFC or an unstable 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 derive attributes. rs. 1. 408 git clone Methodical Introduction. And it runs on all platforms Rust supports. . ) simply bumping this ASAP should be adequate to address this. What happend Failed to install/compile latest taplo-cli (v0. 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. Procedural macros allow you to run code at compile time that operates over Rust syntax, both consuming and producing Rust syntax. Panics if called from outside of a procedural macro. You signed out in another tab or window. 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. Saved searches Use saved searches to filter your results more quicklyWhen loading atsamd-rs BSPs, rust-analyzer crashes. crates. 4. rust-analyzer Add a standalone rust-analyzer-proc-macro-srv binary. export_executable_symbols 1. #11805 don’t try to resolve methods on unknown types. Compile error: rror[E0635]: unknown feature `proc_macro_span_shrink` --> /Users/xus/. 13. check_cfg 1. The problem here is that println!("{}", file!()); is executed at compile time and not at runtime. Open. It only returns a result if the span corresponds to real source code. Reload to refresh your session. (&self, other: Creates a new span with the same line/column information as but that resolves symbols as though it were at . expr_ty_adjusted(lhs/rhs), and see if there's an impl. I was told that the rustup installer script at sh. Procedural macros must be defined in a crate with the crate type of proc-macro. OK, got it. rs and main. 2, and build as nightly i'm getting the following not sure if this is a problem that can be resolved at this level error[E0635]: unknown feature proc_macro_span_shrink --> C:Us. ) Public API // p. Featured on Meta Update: New Colors Launched. Repository owner locked and limited conversation to collaborators Nov 16, 2023. cargo/registry/src/index. Procedural macros have had a long and storied history in Rust (and will continue to have a storied future!), and now is perhaps one of the best times to get involved with them because the 2018 edition has so dramatically improved the experience both defining. 74. } macro to write Python code directly in your Rust code. The build environment is setup via buildroot. I also had to pin proc-macros2 at =1. 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. 0 (f1edd0429 2021-11-29) I've verified that proc macro support is enabled by looking at the client logs: INFO [1/1/2022. This is the output when compiling: >>> rust-server 0. abi_amdgpu_kernel 2. I want to write a derive macro which generates following string from below struct. , when not using the unstable. Solution is downgrading proc-macro2 to 1. It is. dump_mono_stats 1. 0. self_profile 1. You switched accounts on another tab or window. The crate compiles locally (as already done by cargo publish) and then is securely verified by a crates. . 9 Compiling memoffset v0. Building for aarch64-unknown-linux-gnu a program that depends on proc-macro2. 60中根据this issue被修复。核心问题实际上不是上述任何一种可能性（类型），因为在开发过程中根据this PR对一个特性进行了 * 重命名 *。 如何找到有问题的依赖项？The Rust Programming Language - the official Rust book which is freely available online. 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. rustup default nightly-2022-07-24 && rustup target add wasm32-unknown-unknown. 4 Compiling lock_api v0. 62. For more information on. Open Source. It only returns a result if the span corresponds to real source code. After much messing around I think I have something that works, although I'm happy to accept other answers that are better as I feel this is a bit messy: extern crate proc_macro; use proc_macro2:: {Span, TokenStream}; use quote::quote; use syn:: {parse_macro_input, Attribute, DeriveInput, Ident, Result}; # [proc_macro_derive. This preserves the original source code, including spaces and comments. The last dependabot PR for proc-macro2 had been closed without comment. 43 : cargo update -p proc-macro2 --precise 1. 0). In fact the readme specifically states it's great for using in unit tests. It parses a TokenStream into a Rust Abstract Syntax Tree (AST), which is easier to work with than "raw tokens". 29+ without semver exempt features. It is fixed in proc-macro2 1. 57. cargo/registry/src/index. hongfish opened this issue on Oct 27, 2022 · 3 comments. 2. 9. rust-lang/rust#113152 error[E0635]: unknown feature `proc_macro_span_shrink` --> C:Usersdhorner. I am breaking my head against the wall trying to figure this one out. Unlike proc_macro2::Span, the proc_macro::Span type can only exist within the context of a procedural macro. Alternatively if you look in shell. I want to generate prometheus metric by just annotating variables. You switched accounts on another tab or window. ] square brackets around the input. 2. rs is an unofficial list of Rust/Cargo crates, created by. Reload to refresh your session. Declarative macros are the simplest type of macro and are defined with the macro-rules! macro. solana dev solana dev. Codegen logs with RUST_LOG=debug environment variableCompiling proc-macro2 v1. into_compile_error(). 1. rs, and we avoid needing incompatible ecosystems. 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. Stack Overflow error [E0635]: unknown feature `proc_macro_span_shrink` --> $HOME/. You'll need to decide how you want to. 60+ dtolnay/proc-macro2#391. Crate proc_macro. proc-macro2. pub fn join (&self, other: Span) -> Option < Span >. Function-like macros define macros that look like function calls. Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community. 15. We’ve used macros like println! throughout this book, but we haven’t fully explored what a macro is and how it works. Language features 2. It is fixed in proc-macro2 1. rs, people start to rename crates in Cargo. com> - 1. MSVC. 0 nightly build. rust-analyzer Add a standalone rust-analyzer-proc-macro-srv binary. status: needs triage This issue needs to triage, applied to new issues type: bug. Macros. #11797 fix unwrap on a None value in proc macros built with Rust 1. Add a comment |. This preserves the original source code, including spaces and comments. , when not using the unstable ::proc_macro::quote! macro Yes, if you managed to minimize examle, it definitelly makes sense to open an issue to get a . This manual focuses on a specific usage of the library — running it as part of a server that implements the Language Server Protocol (LSP). You can easily do that with macro_rules! like this:2. 50/src/lib. 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. One of the project maintainers explained to me that I was using a too-recent toolchain. Moreover, a function-like procedural macro (i. Could you try to bump your proc-macro2 version? Also, could you maybe provide either the full code or a smaller reproduction of the suggestion (if possible), I can't seem to reproduce the suggestion for your pattern on stable. This method is semver exempt and not exposed by default. Error error[E0635]: unknown feature `proc. . . Tour Start here for a quick overview of the site Help Center Detailed answers to any questions you might have Description. Which uses qt. Usually, the way to go is to have a Cargo feature in your macro that will change how it expands the code. Perhaps my favorite feature in the Rust 2018 edition is procedural macros. emit_stack_sizes 1. It does say "can also indicate. Depending on beta or stable would be much more robust if there are only features being used that could be replaced by some macros or crates that work on stable. proc_macro_span. 14. rustup installs The Rust Programming Language from the official release channels, enabling you to easily switch between stable, beta, and nightly compilers and keep them updated. use proc_macro::TokenStream; use syn:: {parse_macro_input, LitStr}; use quote::quote; # [proc_macro] pub fn my_macro (input. That process is called the expander. {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. Yes, if you managed to minimize examle, it definitelly makes sense to open an issue to get a . Reload to refresh your session. @mati865 #69519 introduced different defaults for crt-static for executables (yes) and proc-macros (no) (should apply to all dylibs really). You signed in with another tab or window. 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. I haven't even tried to compile it yet. extern_options 1. For the proc_macro_span_shrink error, see #113152. 57. 2. During attribute processing, active attributes remove themselves from the thing they are on while inert attributes stay on. 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. 8. A wrapper around the procedural macro API of the compiler's proc_macro crate. Macros. 47 error[E0635]: unknown feature `proc_macro_span_shrink` --> . A support library for macro authors when defining new macros. location_detail 1. Types from proc_macro are entirely specific to procedural macros and cannot ever exist in code outside of a procedural macro. control_flow_guard 1. SpanData is 16 bytes, which is too big to stick everywhere. The tracking issue for this feature is: None. 0. 2k;. lib. Building a proc-macro-srv binary from rust-analyzer sources in Rust CI doesn't change the coupling at all: only rust-analyzer crates (and extern proc_macro. 43 . I also had to pin proc-macros2 at =1. rust-analyzer Add an environment variable to test proc macros against various toolchains. As a consequence of being specific to procedural macros. rs. lizhuohua added a commit that referenced this issue on Nov 11, 2022. Use this tag for questions about code written in Rust. com> - 1. When called from within a procedural macro not using a nightly compiler, this method will always return None. 4 Compiling lock_api v0. 第一个是在这种情况下的解决方案，因为错误来自proc-macro 2 v1. Motivation. Alternatively, if you can place the code that requires the feature in your own crate (a helper. If this Span wasn’t generated from other macro expansions then the return value is the same as *self. I even tried adding crate-type = ["rlib", "staticlib", "cdylib"] and to lib section and it still succeeded. There is even a macro in quote which makes this easier: quote_spanned!. toml. 2. Good to know: proc macro expansion is no longer supported in toolchains older than 1. drharryhe opened this issue Sep 11, 2023 · 4 comments Labels. codegen_backend 1. 9. ) simply bumping this ASAP should be adequate to address this. 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. 0. With the current nightly version rustc 1. drharryhe opened this issue Sep 11, 2023 · 4 comments Labels. 29. So the macro just needs to write the absolute path. Version. span. The feature detection just checks RUSTFLAGS directly, which does not include configuration added by Cargo itself. You switched accounts on another tab or window. 12. You can sort of think of procedural macros as functions from an AST to another AST. toml rust-toolchain src x86_64-unknown-none. has the side effect of updating a generated file in the end-user project that describes and utimately creates a SQLite Person table. The Unstable Book; 1. 如题，出错信息如下： error[E0635]: unknown feature `proc_macro_span_shrink` --> /home/wsl/. We expect to remove the limitation that the attribute must be specified with an absolute. cargo egistrysrcindex. It links the dynamic library and uses the same interface as the compiler to interact with procedural macros. 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. 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. rs. rs, people start to rename crates in Cargo. Convert proc_macro2::Span to proc_macro::Span. nightly-2020-03-24 x86_64-unknown-none. rs and main. rs. json rust-toolchain. If I'm wrong, feel free to correct me. ⓘLet’s now set up our crate so it can use the procedural macro features. rust; Share. 281. The expander is implemented similarly in both Rust Analyzer and IntelliJ Rust. Attribute-like macros that define custom attributes usable on any item. 11. This setting is implied if #[proc_macro_error] is applied to a function marked as #[proc_macro], #[proc_macro_derive] or #[proc_macro_attribute]. AFAIK, it applies RUSTFLAGS only to. Saved searches Use saved searches to filter your results more quicklyStack Overflow | The World’s Largest Online Community for DevelopersRust includes several traits that you can derive, but it also lets you define your own. 60. After a cargo clean && cargo build: error[E0422]: cannot find struct, variant or union type `LineColumn` in. A wrapper around the procedural macro API of the compiler's proc_macro crate. This library serves two purposes: Bring proc-macro-like functionality to other contexts like build. Attribute macros are active. Get early access and see previews of new features. The only thing is that, the compiler does not want any compiler unknown attributes on the final expanded struct. proc-macro2. No API has been formally proposed for this feature. debug_info_for_profiling 1. The issue was fixed via: proc-macro2 1. rust-proc-macros; rust-analyzer; or ask your own question. 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. rustup default stable-x86_64-pc-windows-msvc. 0. Steps to reproduce: VSCode Version 1. You can use quote::quote to generate the output of the macro, and use # to insert the contents of a variable into the generated code. When running cargo build-bpf, I get an error like this:. Feature gate: #! [feature (proc_macro_span_shrink)] This feature adds span. cf_protection 1. proc-macro2. I've tried setting "rust-analyzer. 3. into()), "No literals allowed in the `macro` proc-macro" ). tables. 1 hygiene works; however, the derive macros are stable, so this is an undesirable thing. 4. 24. 8. A-proc-macros Area: Procedural macros A-resolve Area: Path resolution C-feature-request Category: A feature request, i. A support library for macro authors when defining new macros. 4. 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. A-macros Area: All kinds of macros (custom derive, macro_rules!, proc macros, . 8. Make procedural macros unit testable. I still couldn't get rust-analyzer to cooperate afterwards, but running rustc --print sysroot and setting "rust-analyzer. Cannot build - unknown feature `proc_macro_span_shrink` 2. enable": true in both my User and Workspace settings, but I still get the unresolved-proc-macro lint in the editor. 0. I'm not at all familiar with this project, so is there a dependency on proc-macro2 1. dylib_lto 1. rs:92:30 |. cargo/registry/src/index. rust-analyzer Add an environment variable to test proc macros against various toolchains. Switching to the pre-release version of rust-analyzer fixed this for me on rustc 1. . . So we just need to create a type that can be constructed into a constant and which implements ToTokens. Related: extract_rust_hdl_interface, rust_hls, rust_hls, rust_hls_macro, rust_hls_macro_lib, wrap_verilog_in_rust_hdl_macro See also: cargo-careful, serde_spanned, rmp, queued, mpi, janus_messages, rmpv, prodash, crossbeam-channel, minitrace, cargo-all-features. They also differ in the ways the compiler and. 3. 0 Compiling proc-macro2 v1. 6. Can anybody help me with my issue? The text was updated successfully, but these errors were encountered:. Meanwhile proc_macro2 types. You signed out in another tab or window. - Backport pr46592 to fix local_rebuild bootstrapping. Procedural macros must be defined in a crate with the crate type of proc-macro. When I view cargo tree I only see dependencies on 1. (proc_macro_span #54725) The span for the origin source code that self was generated from. sysroot": "/path/to/sysroot" with the output of that command fixed the problem, I just had to restart rust-analyzer afterwards. 19 error[E0635]: unknown feature proc_macro_span_shrink --> /root/. 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. Interesting results though, that's 4 hours faster still so far. 60+ dtolnay/proc-macro2#391. io rather than using the compiler's built in proc-macro crate directly. However, this breaks importing the crate, as the proc-macro. 23 Compiling unicode-ident v1. . 278. cf_protection 1. It will do so by first going into the construct's syntax and its key parts and then following it up with more general information that one should at least be aware of. Anchor build fails due to a current Rust version (1. 59 or above is needed, 1. pub fn f64_suffixed (n: f64) -> Literal. The borsh and yew macros work fine for me on rustc 1. 15. Communication between the IDE and the expander is performed using full data serialization. We call such extensions "macros by example" or simply "macros". 1. This happens when initialising a project with anchor. A support library for macro authors when defining new macros. 9. rs. Setting. If this Span wasn’t generated from other macro expansions then the return value is the same as *self. You signed out in another tab or window. ERROR test_me % cargo build Compiling libc v0. How to use. We’ve used macros like println! throughout this book, but we haven’t fully explored what a macro is and how it works. lizhuohua completed in #9 on Nov 11, 2022. 9. You signed in with another tab or window. procMacro. io. This topic was automatically closed 90 days after the last reply. The tracking issue for this feature is: #54725#54725It seems like just the presence of somehow affects how the Derive macros 1. A proc-macro is at its core just a function exported from a crate with the proc-macro crate. Which seems to be depending on syn. This crates a pull for languages to naturally evolve more complex macro systems than can be. 3.