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extern crate proc_macro;
use openapi_v3::{model::Model, tag::Tag};
use openapi_v3::operation::Operation;
use proc_macro::TokenStream;
use proc_macro2::Span;
use proc_macro_error::{abort, proc_macro_error};
use quote::quote;
use syn::{parse_macro_input, Item};
#[macro_use]
mod util;
mod openapi_v3;
#[proc_macro_error]
#[proc_macro_derive(Model, attributes(api))]
pub fn openapi_v3_model(input: TokenStream) -> TokenStream {
let model = parse_macro_input!(input as Model);
(quote! {#model}).into()
}
#[proc_macro_error]
#[proc_macro_attribute]
pub fn openapi_v3_operation(_args: TokenStream, input: TokenStream) -> TokenStream {
let op = parse_macro_input!(input as Operation);
(quote! {#op}).into()
}
#[proc_macro_error]
#[proc_macro_attribute]
pub fn openapi_v3_api(_args: TokenStream, input: TokenStream) -> TokenStream {
let item = parse_macro_input!(input as Item);
match item {
Item::Enum(_) | Item::Struct(_) => {
let model = Model::from_item(item).unwrap_or_else(|e| abort!(e));
(quote!(#model)).into()
}
Item::Fn(_) => {
let op = Operation::from_item(item).unwrap_or_else(|e| abort!(e));
(quote!(#op)).into()
}
_ => abort!(Span::call_site(), "unsupported item"),
}
}
#[proc_macro_error]
#[proc_macro]
pub fn openapi_v3_define_tag(input: TokenStream) -> TokenStream {
let tag = parse_macro_input!(input as Tag);
quote!(#tag).into()
}