rust-macros
Rust Macros
Use macros for syntax transformation or mechanical generation that functions, traits, generics, and build scripts cannot express cleanly. Keep the generated API smaller and more stable than the macro implementation.
Scope and Routing
Use this skill for macro_rules!, declarative DSLs, derive macros, attribute macros, function-like procedural macros, parsing, token generation, hygiene, diagnostics, and expansion tests.
Route ordinary generic design to rust-stable, crate layout and proc-macro companion crates to rust-workspace, feature and publishing policy to rust-cargo-build, compile-fail strategy to rust-testing, use of the third-party Lombok-like derives to rust-lombok-macros, and UniFFI export/derive usage plus generated foreign bindings to rust-uniffi-building.
Workflow
1. Prove a macro is the right boundary
Write representative invocations and expected expansions first. Prefer a function, trait, derive already provided by the ecosystem, or small handwritten implementation when it keeps diagnostics and navigation clearer. Define supported syntax, edition, MSRV, generated names, visibility, error cases, and semver surface.