buckn/derive_http
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This commit is contained in:
Nathan Buck
2025-07-14 22:15:06 -04:00
parent 5aa65e1a38
commit 9fc0ab1f0d
1 changed files with 6 additions and 5 deletions
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11
src/lib.rs
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@ -1,6 +1,6 @@
use proc_macro::TokenStream;
use quote::quote;
use syn::{parse_macro_input, ItemEnum, DeriveInput, Fields, Data};
use syn::{parse_macro_input, Lit, ItemEnum, DeriveInput, Fields, Data};
#[proc_macro_derive(HttpRequest, attributes(http_get))]
pub fn derive_http_get_request(input: TokenStream) -> TokenStream {
@ -23,6 +23,7 @@ pub fn derive_http_get_request(input: TokenStream) -> TokenStream {
}
}
let base_url = base_url.expect("Missing #[http_get(url = \"...\")] attribute");
let base_url_lit = Lit::Str(syn::LitStr::new(&base_url, proc_macro2::Span::call_site()));
let expanded = match &input.data {
Data::Struct(data_struct) => {
@ -47,7 +48,7 @@ pub fn derive_http_get_request(input: TokenStream) -> TokenStream {
impl Queryable for #name {
fn send(
&self,
base_url: &str,
_base_url: &str, // not used
headers: Option<Vec<(&str, &str)>>,
) -> Result<Response, std::io::Error> {
use urlencoding::encode;
@ -56,7 +57,7 @@ pub fn derive_http_get_request(input: TokenStream) -> TokenStream {
let mut query_params: Vec<(String, String)> = Vec::new();
#(#query_param_code)*
let mut url = base_url.to_string();
let mut url = #base_url_lit.to_string();
if !query_params.is_empty() {
let query_parts: Vec<String> = query_params.iter()
.map(|(k, v)| format!("{}={}", k, encode(v)))
@ -98,7 +99,7 @@ pub fn derive_http_get_request(input: TokenStream) -> TokenStream {
match &variant.fields {
Fields::Unnamed(fields) if fields.unnamed.len() == 1 => {
variant_arms.push(quote! {
#name::#vname(inner) => inner.send(base_url, headers.clone()),
#name::#vname(inner) => inner.send(#base_url_lit, headers.clone()),
});
}
_ => panic!("#[derive(HttpRequest)] enum variants must have a single unnamed field"),
@ -109,7 +110,7 @@ pub fn derive_http_get_request(input: TokenStream) -> TokenStream {
impl Queryable for #name {
fn send(
&self,
base_url: &str,
_base_url: &str, // not used
headers: Option<Vec<(&str, &str)>>,
) -> Result<Response, std::io::Error> {
match self {