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support #[hdl] type aliases

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This commit is contained in:
Jacob Lifshay 2024-10-30 20:47:10 -07:00
parent 20cf0abbcc
commit ee15fd2b94
Signed by: programmerjake
SSH key fingerprint: SHA256:B1iRVvUJkvd7upMIiMqn6OyxvD2SgJkAH3ZnUOj6z+c
4 changed files with 148 additions and 3 deletions
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8
crates/fayalite-proc-macros-impl/src/lib.rs
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@ -16,6 +16,7 @@ use syn::{
mod fold;
mod hdl_bundle;
mod hdl_enum;
mod hdl_type_alias;
mod hdl_type_common;
mod module;
@ -850,6 +851,7 @@ macro_rules! options {
};
}
use crate::hdl_type_alias::hdl_type_alias_impl;
pub(crate) use options;
pub(crate) fn outline_generated(contents: TokenStream, prefix: &str) -> TokenStream {
@ -906,14 +908,16 @@ pub fn hdl_module(attr: TokenStream, item: TokenStream) -> syn::Result<TokenStre
pub fn hdl_attr(attr: TokenStream, item: TokenStream) -> syn::Result<TokenStream> {
let kw = kw::hdl::default();
let item = syn::parse2::<Item>(quote! { #[#kw(#attr)] #item })?;
let item = quote! { #[#kw(#attr)] #item };
let item = syn::parse2::<Item>(item)?;
match item {
Item::Enum(item) => hdl_enum::hdl_enum(item),
Item::Struct(item) => hdl_bundle::hdl_bundle(item),
Item::Fn(item) => hdl_module_impl(item),
Item::Type(item) => hdl_type_alias_impl(item),
_ => Err(syn::Error::new(
Span::call_site(),
"top-level #[hdl] can only be used on structs, enums, or functions",
"top-level #[hdl] can only be used on structs, enums, type aliases, or functions",
)),
}
}