Rohan Kotwani freedomtowin
freedomtowin
/ init-deep-dive_rust-proc-macro.rs
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June 28, 2025 21:17
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| pub struct DeriveInput { | |
| pub attrs: Vec<Attribute>, | |
| pub vis: Visibility, | |
| pub ident: Ident, | |
| pub generics: Generics, | |
| pub data: Data, | |
| } |
freedomtowin
/ init-deep-dive_rust-proc-macro.rs
Created
June 28, 2025 21:17
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| use proc_macro::TokenStream; | |
| use quote::quote; | |
| use syn::{parse_macro_input, ItemFn, DeriveInput}; | |
| use syn::{Data, Fields, Type, Expr}; | |
| #[proc_macro_derive(CustomDerive)] | |
| pub fn add_derive_proc_macro(input: TokenStream) -> TokenStream { | |
| let input = parse_macro_input!(input as DeriveInput); | |
| let name = input.ident; |
freedomtowin
/ init-deep-dive_rust-proc-macro.toml
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June 28, 2025 21:17
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| [package] | |
| name = "proc-macro-testing" | |
| version = "0.1.0" | |
| edition = "2024" | |
| [dependencies] | |
| my_proc_macros_lib = { path = "my_proc_macros_lib" } | |
| tokio = { version = "*", features = ["full"]} | |
| reqwest = {version = "0.12.12", features = ["json"]} | |
| serde = {version = "1.0.217", features = ["derive"]} |
freedomtowin
/ init-deep-dive_rust-proc-macro.rs
Created
June 28, 2025 21:17
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| use my_proc_macros_lib::*; |
freedomtowin
/ init-deep-dive_rust-proc-macro.toml
Created
June 28, 2025 21:17
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| [dependencies] | |
| my_proc_macros_lib = { path = "my_proc_macros_lib" } |
freedomtowin
/ init-deep-dive_rust-proc-macro.toml
Created
June 28, 2025 21:17
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| [package] | |
| name = "my_proc_macros_lib" | |
| version = "0.1.0" | |
| edition = "2021" | |
| [lib] | |
| name = "my_proc_macros_lib" | |
| path = "src/lib.rs" | |
| proc-macro = true |
freedomtowin
/ init-deep-dive_rust-proc-macro.sh
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June 28, 2025 21:17
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| cargo new --lib my_proc_macros_lib |
freedomtowin
/ init-deep-dive_rust-proc-macro.rs
Created
June 28, 2025 21:17
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| #[proc_macro] | |
| pub fn my_fn_like_proc_macro(input: TokenStream) -> TokenStream { | |
| // Parse the function from the input | |
| let input_fn = parse_macro_input!(input as ItemFn); | |
| // Visualize or transform (here, just printing function name) | |
| // This can be seen with `cargo expand` | |
| let fn_name = &input_fn.sig.ident; | |
| println!("Function-like macro called on function: {}", fn_name); |
freedomtowin
/ init-deep-dive_rust-proc-macro.txt
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June 28, 2025 21:17
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| ItemFn { | |
| attrs: [], | |
| vis: Visibility::Public( | |
| Pub, | |
| ), | |
| sig: Signature { | |
| constness: None, | |
| asyncness: None, | |
| unsafety: None, | |
| abi: None, |
freedomtowin
/ init-deep-dive_rust-proc-macro.txt
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June 28, 2025 21:17
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| Ident { sym: pub, span: #0 bytes(117..120) } | |
| Ident { sym: fn, span: #0 bytes(121..123) } | |
| Ident { sym: foo, span: #0 bytes(124..127) } | |
| Group (delim = Parenthesis) | |
| Punct { char: '-', spacing: Joint, span: #0 bytes(130..131) } | |
| Punct { char: '>', spacing: Alone, span: #0 bytes(131..132) } | |
| Ident { sym: i32, span: #0 bytes(133..136) } | |
| Group (delim = Brace) | |
| Literal { kind: Integer, symbol: "100", suffix: None, span: #0 bytes(147..150) } | |
| Punct { char: '+', spacing: Alone, span: #0 bytes(151..152) } |