2023-07-22 11:20:31 +02:00
|
|
|
use proc_macro::TokenStream;
|
|
|
|
use quote::quote;
|
2023-08-15 12:13:49 +02:00
|
|
|
use syn::{parse_macro_input, Data, DeriveInput, Field, Fields, FieldsNamed};
|
2023-07-22 11:20:31 +02:00
|
|
|
|
|
|
|
#[proc_macro_derive(Updateable)]
|
|
|
|
pub fn updateable_macro_derive(input: TokenStream) -> TokenStream {
|
|
|
|
let ast: syn::DeriveInput = syn::parse(input).unwrap();
|
|
|
|
|
|
|
|
let name = &ast.ident;
|
|
|
|
// No need for macro hygiene, we're only using this in chorus
|
|
|
|
quote! {
|
|
|
|
impl Updateable for #name {
|
|
|
|
fn id(&self) -> Snowflake {
|
|
|
|
self.id
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
.into()
|
|
|
|
}
|
2023-08-15 12:13:49 +02:00
|
|
|
|
2023-08-04 16:41:37 +02:00
|
|
|
#[proc_macro_derive(JsonField)]
|
|
|
|
pub fn jsonfield_macro_derive(input: TokenStream) -> TokenStream {
|
|
|
|
let ast: syn::DeriveInput = syn::parse(input).unwrap();
|
|
|
|
|
|
|
|
let name = &ast.ident;
|
|
|
|
// No need for macro hygiene, we're only using this in chorus
|
|
|
|
quote! {
|
|
|
|
impl JsonField for #name {
|
|
|
|
fn get_json(&self) -> String {
|
|
|
|
self.json.clone()
|
|
|
|
}
|
|
|
|
fn set_json(&mut self, json: String) {
|
|
|
|
self.json = json;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
.into()
|
|
|
|
}
|
2023-08-15 20:53:56 +02:00
|
|
|
|
2023-09-03 21:00:48 +02:00
|
|
|
#[proc_macro_derive(SourceUrlField)]
|
|
|
|
pub fn source_url_macro_derive(input: TokenStream) -> TokenStream {
|
|
|
|
let ast: syn::DeriveInput = syn::parse(input).unwrap();
|
|
|
|
|
|
|
|
let name = &ast.ident;
|
|
|
|
// No need for macro hygiene, we're only using this in chorus
|
|
|
|
quote! {
|
|
|
|
impl SourceUrlField for #name {
|
|
|
|
fn get_source_url(&self) -> String {
|
|
|
|
self.source_url.clone()
|
|
|
|
}
|
|
|
|
fn set_source_url(&mut self, url: String) {
|
|
|
|
self.source_url = url;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
.into()
|
|
|
|
}
|
|
|
|
|
2023-08-15 12:13:49 +02:00
|
|
|
#[proc_macro_attribute]
|
|
|
|
pub fn observe_option(_args: TokenStream, input: TokenStream) -> TokenStream {
|
|
|
|
input
|
|
|
|
}
|
|
|
|
|
|
|
|
#[proc_macro_attribute]
|
|
|
|
pub fn observe_option_vec(_args: TokenStream, input: TokenStream) -> TokenStream {
|
|
|
|
input
|
|
|
|
}
|
|
|
|
|
|
|
|
#[proc_macro_attribute]
|
|
|
|
pub fn observe(_args: TokenStream, input: TokenStream) -> TokenStream {
|
|
|
|
input
|
|
|
|
}
|
|
|
|
|
|
|
|
#[proc_macro_attribute]
|
|
|
|
pub fn observe_vec(_args: TokenStream, input: TokenStream) -> TokenStream {
|
|
|
|
input
|
|
|
|
}
|
|
|
|
|
|
|
|
#[proc_macro_derive(
|
|
|
|
Composite,
|
|
|
|
attributes(observe_option_vec, observe_option, observe, observe_vec)
|
|
|
|
)]
|
|
|
|
pub fn composite_derive(input: TokenStream) -> TokenStream {
|
|
|
|
let input = parse_macro_input!(input as DeriveInput);
|
|
|
|
|
|
|
|
let process_field = |field: &Field| {
|
|
|
|
let field_name = &field.ident;
|
|
|
|
let attrs = &field.attrs;
|
|
|
|
|
|
|
|
let observe_option = attrs
|
|
|
|
.iter()
|
|
|
|
.any(|attr| attr.path().is_ident("observe_option"));
|
|
|
|
let observe_option_vec = attrs
|
|
|
|
.iter()
|
|
|
|
.any(|attr| attr.path().is_ident("observe_option_vec"));
|
|
|
|
let observe = attrs.iter().any(|attr| attr.path().is_ident("observe"));
|
|
|
|
let observe_vec = attrs.iter().any(|attr| attr.path().is_ident("observe_vec"));
|
|
|
|
|
2023-08-15 17:08:27 +02:00
|
|
|
match (observe_option, observe_option_vec, observe, observe_vec) {
|
|
|
|
(true, _, _, _) => quote! {
|
|
|
|
#field_name: Self::option_observe_fn(self.#field_name, gateway).await
|
|
|
|
},
|
|
|
|
(_, true, _, _) => quote! {
|
|
|
|
#field_name: Self::option_vec_observe_fn(self.#field_name, gateway).await
|
|
|
|
},
|
|
|
|
(_, _, true, _) => quote! {
|
|
|
|
#field_name: Self::value_observe_fn(self.#field_name, gateway).await
|
|
|
|
},
|
|
|
|
(_, _, _, true) => quote! {
|
|
|
|
#field_name: Self::vec_observe_fn(self.#field_name, gateway).await
|
|
|
|
},
|
|
|
|
_ => quote! {
|
|
|
|
#field_name: self.#field_name
|
|
|
|
},
|
2023-08-15 12:13:49 +02:00
|
|
|
}
|
|
|
|
};
|
|
|
|
|
|
|
|
match &input.data {
|
|
|
|
Data::Struct(data) => match &data.fields {
|
|
|
|
Fields::Named(FieldsNamed { named, .. }) => {
|
|
|
|
let field_exprs = named.iter().map(process_field);
|
|
|
|
|
|
|
|
let ident = &input.ident;
|
|
|
|
let expanded = quote! {
|
2023-08-15 20:18:11 +02:00
|
|
|
#[async_trait::async_trait(?Send)]
|
2023-08-16 21:26:27 +02:00
|
|
|
impl<T: Updateable + Clone + Debug> Composite<T> for #ident {
|
2023-08-16 00:21:18 +02:00
|
|
|
async fn watch_whole(self, gateway: &GatewayHandle) -> Self {
|
2023-08-15 12:13:49 +02:00
|
|
|
Self {
|
|
|
|
#(#field_exprs,)*
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
};
|
|
|
|
|
|
|
|
TokenStream::from(expanded)
|
|
|
|
}
|
|
|
|
_ => panic!("Composite derive macro only supports named fields"),
|
|
|
|
},
|
|
|
|
_ => panic!("Composite derive macro only supports structs"),
|
|
|
|
}
|
|
|
|
}
|