29. error: could not compile `proc-macro2` (lib) due to. Actually it does. When called from within a procedural macro not using a nightly compiler, this method will always return None. 31 tasks. Commit 81891f7 enabled attribute proc macro by default (released in v0. cargo/registry/src/index. 2 [Optional] Relevant system information Windows / ndk: 25. Access private key data account or program from within Anchor program. Codegen logs with RUST_LOG=debug environment variable Compiling proc-macro2 v1. Compiler flags; 1. 1 Answer. 0. cargo. How to pin-point where parsing failed and give appropriate error?A-macros Area: All kinds of macros (custom derive, macro_rules!, proc macros, . anchor build -> stack offset exceeding max offset. 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. Syntax. serverFromRustup is that we. I'm having issues enabling proc-macro expansion for rust-analyzer in VS Code. OK, got it. Reload to refresh your session. One of the project maintainers explained to me that I was using a too-recent toolchain. A support library for macro authors when defining new macros. 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. Add a comment |. Version. The build environment is setup via buildroot. Rust v1. This library serves two purposes: Bring proc-macro-like functionality to other contexts like build. 0. We’ve used macros like println! throughout this book, but we haven’t fully explored what a macro is and how it works. This setting is also implied if proc-macro-hack was detected. 11. You may run into issues with trying this in a independent binary like you have here since proc_macro can only be used within a procedural macro invocation. 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. Is there a difference between Rust's `macro_rules!` and Scheme's `syntax-rules`? Switch with string patterns Flag Interpretation. The tracking issue for this feature is: None. 279. (&self, other:MacroTranscriber : DelimTokenTree. . 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. 6 Compiling syn v1. 0 Compiling proc-macro-error-attr v1. Merged. Warning: the underlying proc_macro::Span::join method is nightly-only. In my case, i run these 3 commandsProcedural macros must be defined in their own crates. Types from proc_macro are entirely specific to procedural macros and cannot ever exist in code outside of a procedural macro. 64. Panics if called from outside of a procedural macro. Crate proc_macro. 1. 0. 60. 15. pub fn source (&self) -> Span. aarch64_ver_target_feature 2. – oli_obk. Reload to refresh your session. Let's build a very simple trait, and. Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community. Feature proc_macro_span is still unstable, for more details check out issue #54725 - Tracking issue for proc_macro::Span inspection APIs. 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. 1. This topic was automatically closed 90 days after the last reply. Macros. I am uncertain whether this is the same bug, but I am able to duplicate this message on a rustc that I compiled myself locally (toolchain override msp430-fix- name not important). 59 and a specific version of Rust. Fortunately, there is a way! The interpolation via # in quote! works via the ToTokens trait. Syntax is described in the next section below. before () and span. In the Cargo. 3. 0. You could also run the executable directly after building it: $ cargo build --bin gtktest --features gtk_3_10 $ . 10. access address lookup table on chain. A wrapper around the procedural macro API of the compiler's proc_macro crate. Contribute to gfxstrand/rust-proc-macro2 development by creating an account on GitHub. Panics if called from outside of a procedural macro. To opt into the additional APIs available in the most recent nightly compiler, the procmacro2_semver_exempt config flag must be passed to rustc. Reload to refresh your session. You switched accounts on another tab or window. 0. About tracking issues. 0. 4. Anchor build fails due to a current Rust version (1. Procedural macros most often refer to their runtime library crate by assuming that a user of the procedural macro will have an explicit dependency on the library crate and does not rename the crate, allowing the procedural macro to emit extern crate library or use ::library paths. rust-analyzer Add an environment variable to test proc macros against various toolchains. The tracking issue for this feature is: #54727#54727I pulled the Clippy repo this afternoon and started to take a stab at it. Explains syn and quote a little. It only returns a result if the span corresponds to real source code. codegen_backend 1. 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. I also had to pin proc-macros2 at =1. 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. 43 due to it needing proc_macro_span_shrink from a later Rust version. During attribute processing, active attributes remove themselves from the thing they are on while inert attributes stay on. Switching to the pre-release version of rust-analyzer fixed this for me on rustc 1. 60+ dtolnay/proc-macro2#398. Cannot build - unknown feature `proc_macro_span_shrink` 1. 2. Use an edition specific tag for questions that refer to code which requires a particular edition, like [rust-2018]. This enables code using Syn to execute outside of the context of a procedural macro, such as in unit tests or build. 2. adding use proc_macro2::Span; makes this compile successfully. Make it easy to use external-macro-backtrace cargo#6049; A quick skim of that ticket makes it sound like Cargo is explicitly reifying rustc flags, so one explanation for this UX. 0 nightly build. proc_macro_span. I've seen some custom derive macros. Reload to refresh your session. crates. dump_mono_stats 1. 4. This method is available when building with a nightly compiler, or when building with rustc 1. io Compiling autocfg v1. 70. After a cargo clean && cargo build: error[E0422]: cannot find struct, variant or union type `LineColumn` in. 0-nightly (cae0791da 2023-10-05). * and rust. 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. If this Span wasn't generated from other macro expansions then the return value is the same as *self. 1 error[E0635]: unknown feature `proc_macro_span_shrink. How to use. rs and main. You can tell that your command isn't doing what you expect because the output says that your code is being. proc-macro2. For this I use darling. Crate proc_macro. 6. pub fn f64_suffixed (n: f64) -> Literal. 147 Compiling proc-macro2 v1. 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. cargo/registry/src/index. Rust. debug_info_for_profiling 1. You can use Rust workspaces to organize all these projects. Feature gate: #! [feature (proc_macro_span_shrink)] This feature adds span. Declarative macros are the simplest type of macro and are defined with the macro-rules! macro. It fails even for debug build. Make procedural macros unit testable. 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. A wrapper around the procedural macro API of the compiler’s proc_macro crate. IMO, it's always good to follow the latest Polkadot release CI's Rust toolchain. This is the git submodule => git subtree move. This method is semver exempt and not exposed by default. This crates a pull for languages to naturally evolve more complex macro systems than can be. 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. Attribute macros - # [CustomAttribute] Procedural macros allow you to run code at compile time that operates over Rust syntax, both consuming and producing Rust syntax. In your case, we can write this: let output = if ty. 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/. into()), "No literals allowed in the `macro` proc-macro" ). I am breaking my head against the wall trying to figure this one out. //# HELP auth label metric_type to create 2nd line. 1. 5. Using that you can generate any piece of code. Reload to refresh your session. rustc --version --verbose. . 75. I'm not at all familiar with this project, so is there a dependency on proc-macro2 1. rs. If -C target-feature=+crt-static is specified explicitly, then the compiler respects it and overrides the defaults, that's the compiler's job. 3. You signed out in another tab or window. A new ident can be created from a string using the Ident::new function. Improve this answer. Compiler flags; 1. Reload to refresh your session. 0. Types from proc_macro are entirely specific to procedural macros and cannot ever exist in code outside of a procedural macro. pub fn source_text (&self) -> Option < String > [src] [ −] 🔬 This is a nightly-only experimental API. 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. Building for aarch64-unknown-linux-gnu a program that depends on proc-macro2. proc_macro2 is needed in Yandros' bail! macro because it is in its own separate macro_rules macro and not. 29+ without semver exempt features. emit(); The problem is, the spanned method takes a proc_macro2::Span as an argument, a struct which has no constructor available. You signed in with another tab or window. 0. Restart the language server. 0. "] and there are various different values. You can find “real world” examples of both declarative and procedural macros in the r3bl_rs_utils crate. Warning: the underlying proc_macro::Span::join method is nightly-only. 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. Compiler flags; 1. " Eventually, procedural macros will allow for all sorts of advanced metaprogramming in Rust, but today, they're only for custom derive. You. 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. Modify the. As a consequence of being specific to procedural macros. Identifiers created with this span will be resolved as if they were written directly at the macro call location (call-site. It only returns a result if the span corresponds to real source code. ) B-unstable Implemented in the nightly compiler and unstable. } macro to write Python code directly in your Rust code. 4 Compiling lock_api v0. cargo/registry. 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. I even tried adding crate-type = ["rlib", "staticlib", "cdylib"] and to lib section and it still succeeded. log. dump_mono_stats_format 1. (see dtolnay/proc-macro2#391 for additional context. 2. toml rust-toolchain src x86_64-unknown-none. ) Public API // p. A wrapper around the procedural macro API of the compiler's proc_macro crate. report_time 1. cargo build-bpf rustc version. A support library for macro authors when defining new macros. To reference Rust variables, use 'var, as shown in the. Function-like macro s that look like. Hi, Just a heads up, it looks like there is an issue with the proc_macro_span_shrink feature in the rust 1. . In an attempt to execute #5 , I've begun on this skeleton of a SPI-implementing macro. This library serves two purposes: Bring proc-macro-like functionality to other contexts like build. 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. Repeat with any proc macros that need expanding (which may spawn several toolchains, if different cargo workspaces. You signed out in another tab or window. Not the whole file, but it can certainly escape a single macro call, and can include totally unrelated items. Description. rust-proc-macros; rust-analyzer; or ask your own question. dump_mono_stats 1. 8. Moreover, a function-like procedural macro (i. A support library for macro authors when defining new macros. In that crate, create the implementation, annotated with # [proc_macro_attribute]. Basically whenever I change something, the whole function is marked as problematic. Tracking issues are used to record the overall progress of implementation. If we ever get proc macros 2. 5. You signed in with another tab or window. 71. expr_ty_adjusted(lhs/rhs), and see if there's an impl. Procedural Macros are really hard to understand. More details are shown here proc-macro2 issue. This preserves the original source code, including spaces and comments. 47 error[E0635]: unknown feature `proc_macro_span_shrink` --> . Types from proc_macro are entirely specific to procedural macros and cannot ever exist in code outside of a procedural macro. Cannot build - unknown feature `proc_macro_span_shrink`. 0-nightly), compilation fails with this error: error[E0635]: unknown feature `proc_macro_span_shrink` --> /home/saverio/. The only thing is that, the compiler does not want any compiler unknown attributes on the final expanded struct. The Unstable Book; 1. We can accomplish this task through a feature of Rust called "procedural macros. 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. Tour 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 siteA wrapper around the procedural macro API of the compiler’s proc_macro crate. You switched accounts on another tab or window. rs is an unofficial list of Rust/Cargo crates, created by. 9. ) simply bumping this ASAP should be adequate to address this. dylib_lto 1. Meanwhile proc_macro2 types. The two new procedural macro kinds are:. toml should contain. 0-nightly (83964c156 2023-07-08), I get error[E0635]: unknown feature 'proc_macro_span_shrink'. Furthermore, pro. 39 is used. cargo/registry/src/rsproxy. This library serves two purposes: Bring proc-macro-like functionality to other contexts like build. Description Hi folks, As you may or may not be aware, there was recently a push to prod made by the Rust dev team (see rust-lang/rust#113152) that depreciated several nightly APIs. proc_macro_span;. Follow asked May 19 at 14:41. 8. json rust-toolchain. 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. 0. 15. . 9. 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. Tracking issue for RFC 1566: Procedural macros #38356. This preserves the original source code, including spaces and comments. You switched accounts on another tab or window. 8. 3 Compiling lazy_static v1. 003b79d. 1 Answer. error: could not compile `proc-macro-hack` due to 2 previous errors Build completed unsuccessfully in 0:04:28 The command '/bin/sh -c (cd rust && python3 x. Repository owner locked and limited conversation to collaborators Nov 16, 2023. I've tried setting "rust-analyzer. It parses a TokenStream into a Rust Abstract Syntax Tree (AST), which is easier to work with than "raw tokens". Procedural macros must be defined in a crate with the crate type of proc-macro. nvim. The borsh and yew macros work fine for me on rustc 1. 29+ without semver exempt features. #11800 fix #[macro_use] no longer importing non-macro_rules! macros. When called from within a procedural macro in a nightly compiler, Spanned will use join to produce the intended span. New Features #11112 evaluate constants in array repeat expression: #11193 add setting to replace specific proc-macros with dummy expanders:. Development. This attribute performs the setup and cleanup necessary to make things work. As these are unstable APIs that track the. Switching to the pre-release version of rust-analyzer fixed this for me on rustc 1. Reference Make software development more efficient, Also welcome to join our telegram. 15 Compiling crossbeam-utils v0. use. (proc_macro_span, proc_macro_span_shrink) | ^^^^^ For more information about this error, try ` rustc --explain E0635 `. 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. toml文件中的依赖项，但该错误并没有告诉我是哪. rs and main. But crate names with dashes become underscores for imports. In an attempt to execute #5 , I've begun on this skeleton of a SPI-implementing macro. I'm trying to test building just librustc_llvm for the purposes of git bisecting, but am getting the following error: . Use this tag for questions about code written in Rust. 14. codegen_backend 1. A-macros Area: All kinds of macros (custom derive, macro_rules!, proc macros, . This setting is implied if #[proc_macro_error] is applied to a function marked as #[proc_macro], #[proc_macro_derive] or #[proc_macro_attribute]. 0 Compiling proc-macro2 v1. codegen_backend 1. When not using a nightly compiler, only the span of. Feb 27, 2017 at 12:13. If this Span wasn’t generated from other macro expansions then the return value is the same as *self. Meanwhile proc_macro2 types. 51 somewhere that needs to be bumped to 1. 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. emit_stack_sizes 1. Using Rust variables. emit_stack_sizes 1. toml rust-toolchain src x86_64-unknown-none. Syntax is described in the next section below. This method is available when building with a nightly compiler, or when building with rustc 1. An attribute is either active or inert. Which seems to be depending on syn. You can sort of think of procedural macros as functions from an AST to another AST. 71. MSVC. io-6f17d22bba15001f/proc-macro2-1. rust: 1. The issue of attribute macros invoked at the crate root is being tracked in rust-lang/rust#41430. They are also uses as hubs connecting to other relevant issues, e. It is not necessarily limits to generating methods for the enum itself. CI is currently failing the documentation build due to this error: error[E0635]: unknown feature `proc_macro_span_shrink` --> /home/runner/. When emitting PTX code, all vanilla Rust functions (fn) get translated to "device" functions. dump_mono_stats 1. py --board=nrf52840_dongle_dfu --erase_storage --programmer=nordicdfu", it goes wrong showing "error[E0635]: unknown feature 'proc_macro_span_shrink'". For the proc_macro_span_shrink error, see #113152. 0. I also had to pin proc-macros2 at =1. 27 Compiling proc-macro2 v1. rs). However, when writing a #[proc_macro] macro, it is common to want to define a custom domain specific. This method is semver exempt and not exposed by default. Though, we don't stop users from using. crates. 63. 277. 41 3 3 bronze badges. rust-analyzer Add an environment variable to test proc macros against various toolchains. You can tell that your command isn't doing what you expect because the output says that your code is being. * and rust-analyzer. Unlike proc_macro2::Span, the proc_macro::Span type can only exist within the context of a procedural macro. 768). proc_macro/bridge: remove client->server &HandleCounters passing. 0. Attribute macros - # [CustomAttribute] Procedural macros allow you to run code at compile time that operates over Rust syntax, both consuming and producing Rust syntax. 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. 0. 1. 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.