nonbinary.computer
A better Rust ATProto crate
1//! Shared helper functions for derive macros
2
3use syn::{Attribute, Ident};
4
5/// Helper function to check if a struct derives bon::Builder or Builder
6pub fn has_derive_builder(attrs: &[Attribute]) -> bool {
7 attrs.iter().any(|attr| {
8 if !attr.path().is_ident("derive") {
9 return false;
10 }
11
12 // Parse the derive attribute to check its contents
13 if let Ok(list) = attr.parse_args_with(
14 syn::punctuated::Punctuated::<syn::Path, syn::Token![,]>::parse_terminated,
15 ) {
16 list.iter().any(|path| {
17 // Check for "Builder" or "bon::Builder"
18 path.segments
19 .last()
20 .map(|seg| seg.ident == "Builder")
21 .unwrap_or(false)
22 })
23 } else {
24 false
25 }
26 })
27}
28
29/// Check if struct name conflicts with types referenced by bon::Builder macro.
30/// bon::Builder generates code that uses unqualified `Option` and `Result`,
31/// so structs with these names cause compilation errors.
32pub fn conflicts_with_builder_macro(ident: &Ident) -> bool {
33 matches!(ident.to_string().as_str(), "Option" | "Result")
34}