proc-macro-workshop | write Rust procedural macros [ Rust Latam conference | Wrapper library

 by   dtolnay Rust Version: Current License: Apache-2.0

kandi X-RAY | proc-macro-workshop Summary

kandi X-RAY | proc-macro-workshop Summary

proc-macro-workshop is a Rust library typically used in Utilities, Wrapper applications. proc-macro-workshop has no bugs, it has no vulnerabilities, it has a Permissive License and it has medium support. You can download it from GitHub.

Learn to write Rust procedural macros  [Rust Latam conference, Montevideo Uruguay, March 2019]
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            kandi-support Support

              proc-macro-workshop has a medium active ecosystem.
              It has 2880 star(s) with 738 fork(s). There are 41 watchers for this library.
              OutlinedDot
              It had no major release in the last 6 months.
              There are 1 open issues and 31 have been closed. On average issues are closed in 107 days. There are no pull requests.
              It has a neutral sentiment in the developer community.
              The latest version of proc-macro-workshop is current.

            kandi-Quality Quality

              proc-macro-workshop has 0 bugs and 0 code smells.

            kandi-Security Security

              proc-macro-workshop has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
              proc-macro-workshop code analysis shows 0 unresolved vulnerabilities.
              There are 0 security hotspots that need review.

            kandi-License License

              proc-macro-workshop is licensed under the Apache-2.0 License. This license is Permissive.
              Permissive licenses have the least restrictions, and you can use them in most projects.

            kandi-Reuse Reuse

              proc-macro-workshop releases are not available. You will need to build from source code and install.
              Installation instructions are not available. Examples and code snippets are available.

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            proc-macro-workshop Key Features

            No Key Features are available at this moment for proc-macro-workshop.

            proc-macro-workshop Examples and Code Snippets

            No Code Snippets are available at this moment for proc-macro-workshop.

            Community Discussions

            QUESTION

            Why can't Rust find method for enum generated using proc_macro_attribute?
            Asked 2021-Feb-21 at 13:39

            I am trying to write procedural macros that will accept a Rust enum like

            ...

            ANSWER

            Answered 2021-Feb-21 at 13:39

            Here is a Playground repro: https://play.rust-lang.org/?version=nightly&mode=debug&edition=2018&gist=6fb228ef5b3f3a100ba410d7c3e9714c

            So, indeed what you mention is true: the expanded code could be copy-pasted and it would work. When this happens (having behavior from macro expansion and "manual copy-pasted expansion" differ), there are two possibilities:

            • macro_rules! metavariables

              When emitting code using macro_rules! special captures, some of these captures are wrapped with special invisible parenthesis that already tell the parser how the thing inside should be parsed, which make it illegal to use in other places (for instance, one may capture a $Trait:ty, and then doing impl $Trait for ... will fail (it will parse $Trait as a type, thus leading to it being interpreted as a trait object (old syntax)); see also https://github.com/danielhenrymantilla/rust-defile for other examples.

              This is not your case, but it's good to keep in mind (e.g. my initial hunch was that when doing $tt::$rhs if $tt was a :path-like capture, then that could fail).

            • macro hygiene/transparency and Spans

              Consider, for instance:

            Source https://stackoverflow.com/questions/66301386

            QUESTION

            How do I use an iterator twice inside of the quote! macro?
            Asked 2021-Jan-08 at 16:32

            I'm trying to implement the builder pattern from the proc macro workshop I'm creating a proc macro which parses a struct, extracts its name, field_names and field_types. It should reproduce the struct itself and also create a builder struct with the same field_names but with optional types.

            My problem is that field_name and field_type are iterators that I would have to use twice in order to create two structs out of one.

            This is my source tree

            ...

            ANSWER

            Answered 2021-Jan-06 at 21:28

            Iterators can only be used zero or one time, not multiple; that's standard Rust and doesn't involve the quote! macro:

            Source https://stackoverflow.com/questions/65603440

            Community Discussions, Code Snippets contain sources that include Stack Exchange Network

            Vulnerabilities

            No vulnerabilities reported

            Install proc-macro-workshop

            You can download it from GitHub.
            Rust is installed and managed by the rustup tool. Rust has a 6-week rapid release process and supports a great number of platforms, so there are many builds of Rust available at any time. Please refer rust-lang.org for more information.

            Support

            For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .
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            gh repo clone dtolnay/proc-macro-workshop

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            git@github.com:dtolnay/proc-macro-workshop.git

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