buckn/derive_http
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should be fixed now

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This commit is contained in:
Nathan Buck
2025-07-10 16:40:53 -04:00
parent 68746b192c
commit 92416c1726
1 changed files with 12 additions and 17 deletions
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29
src/lib.rs
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@ -1,28 +1,25 @@
use proc_macro::TokenStream; use proc_macro::TokenStream;
use quote::quote; use quote::quote;
use syn::{parse_macro_input, Attribute, Data, DeriveInput, Fields, Meta, NestedMeta}; use syn::{parse_macro_input, DeriveInput, Data, Fields, Lit};
#[proc_macro_derive(HttpGetRequest, attributes(http_get))] #[proc_macro_derive(HttpGetRequest, attributes(http_get))]
pub fn derive_http_get_request(input: TokenStream) -> TokenStream { pub fn derive_http_get_request(input: TokenStream) -> TokenStream {
let input = parse_macro_input!(input as DeriveInput); let input = parse_macro_input!(input as DeriveInput);
let name = input.ident; let name = &input.ident;
// Extract the #[http_get(url = "...")] attribute // Parse #[http_get(url = "...")] attribute
let mut base_url = None; let mut base_url = None;
for attr in &input.attrs { for attr in &input.attrs {
if attr.path().is_ident("http_get") { if attr.path().is_ident("http_get") {
let meta = attr.parse_meta().expect("Invalid #[http_get] syntax"); let _ = attr.parse_nested_meta(|meta| {
if let Meta::List(meta_list) = meta { if meta.path.is_ident("url") {
for nested in meta_list.nested { let value: Lit = meta.value()?.parse()?;
if let NestedMeta::Meta(Meta::NameValue(nv)) = nested { if let Lit::Str(litstr) = value {
if nv.path.is_ident("url") { base_url = Some(litstr.value());
if let syn::Lit::Str(lit_str) = nv.lit {
base_url = Some(lit_str.value());
}
}
} }
} }
} Ok(())
});
} }
} }
@ -32,7 +29,7 @@ pub fn derive_http_get_request(input: TokenStream) -> TokenStream {
Data::Struct(data_struct) => { Data::Struct(data_struct) => {
let fields = match &data_struct.fields { let fields = match &data_struct.fields {
Fields::Named(named) => &named.named, Fields::Named(named) => &named.named,
_ => panic!("#[derive(HttpGetRequest)] supports only named fields for structs"), _ => panic!("#[derive(HttpGetRequest)] only supports structs with named fields"),
}; };
let mut query_param_code = Vec::new(); let mut query_param_code = Vec::new();
@ -98,9 +95,7 @@ pub fn derive_http_get_request(input: TokenStream) -> TokenStream {
#name::#vname(inner) => inner.send(client.clone(), headers.clone(), api_key).await, #name::#vname(inner) => inner.send(client.clone(), headers.clone(), api_key).await,
}); });
} }
_ => panic!( _ => panic!("#[derive(HttpGetRequest)] enum variants must have a single unnamed field"),
"#[derive(HttpGetRequest)] enum variants must have a single unnamed field"
),
} }
} }