https://www.youngju.dev/blog 천천히 올바르게. AI Researcher & DevOps Engineer Youngju's tech blog. GPU/CUDA, LLM, MLOps, Kubernetes AI workloads, distributed training, and data engineering. ko fjvbn2003@gmail.com (Youngju Kim) fjvbn2003@gmail.com (Youngju Kim) Fri, 26 Jun 2026 00:00:00 GMT https://www.youngju.dev/blog/2026-06-26-rust-macros.en https://www.youngju.dev/blog/2026-06-26-rust-macros.en Rust macros are a metaprogramming tool that generates code at compile time. This post distinguishes pattern-based declarative macros (macro_rules!) from procedural macros (derive, attribute, function-like) that receive code as a token stream and manipulate it. We look at what serde's #[derive(Serialize)] actually does, the flow of working with a TokenStream via syn and quote, and when NOT to reach for macros. Fri, 26 Jun 2026 00:00:00 GMT fjvbn2003@gmail.com (Youngju Kim) rustmacrosmetaprogramming https://www.youngju.dev/blog/2026-06-26-rust-macros.ja https://www.youngju.dev/blog/2026-06-26-rust-macros.ja Rustのマクロはコンパイル時にコードを生成するメタプログラミングの道具です。パターンベースの宣言的マクロ（macro_rules!）と、コードをトークンストリームとして受け取り操作する手続き的マクロ（derive・attribute・function-like）を区別して説明します。serdeの#[derive(Serialize)]が実際に何をするのか、synとquoteでTokenStreamを扱う流れ、そしてマクロを使うべきでないときまで扱います。 Fri, 26 Jun 2026 00:00:00 GMT fjvbn2003@gmail.com (Youngju Kim) rustmacrosmetaprogramming https://www.youngju.dev/blog/2026-06-26-rust-macros https://www.youngju.dev/blog/2026-06-26-rust-macros Rust의 매크로는 컴파일 시점에 코드를 생성하는 메타프로그래밍 도구입니다. 패턴 기반의 선언적 매크로(macro_rules!)와, 코드를 토큰 스트림으로 받아 조작하는 절차적 매크로(derive·attribute·function-like)를 구분해 설명합니다. serde의 #[derive(Serialize)]가 실제로 무엇을 하는지, syn과 quote로 TokenStream을 다루는 흐름, 그리고 매크로를 쓰지 말아야 할 때까지 짚습니다. Fri, 26 Jun 2026 00:00:00 GMT fjvbn2003@gmail.com (Youngju Kim) rustmacrosmetaprogramming