Reflection for castables

1 files changed, 0 insertions, 48 deletions

diff --git a/macros/src/capability.rs b/macros/src/capability.rs
deleted file mode 100644
index aa98f584..00000000
--- a/macros/src/capability.rs
+++ /dev/null
@@ -1,48 +0,0 @@
-use super::*;
-
-use syn::parse::Parser;
-use syn::punctuated::Punctuated;
-use syn::Token;
-
-/// Expand the `#[capability]` macro.
-pub fn capability(item: syn::ItemTrait) -> Result<TokenStream> {
-    let ident = &item.ident;
-    Ok(quote! {
-        #item
-        impl ::typst::model::Capability for dyn #ident {}
-    })
-}
-
-/// Expand the `#[capable(..)]` macro.
-pub fn capable(attr: TokenStream, item: syn::Item) -> Result<TokenStream> {
-    let (ident, generics) = match &item {
-        syn::Item::Struct(s) => (&s.ident, &s.generics),
-        syn::Item::Enum(s) => (&s.ident, &s.generics),
-        _ => bail!(item, "only structs and enums are supported"),
-    };
-
-    let (params, args, clause) = generics.split_for_impl();
-    let checks = Punctuated::<Ident, Token![,]>::parse_terminated
-        .parse2(attr)?
-        .into_iter()
-        .map(|capability| {
-            quote! {
-                if id == ::std::any::TypeId::of::<dyn #capability>() {
-                    return Some(unsafe {
-                        ::typst::util::fat::vtable(self as &dyn #capability)
-                    });
-                }
-            }
-        });
-
-    Ok(quote! {
-        #item
-
-        unsafe impl #params ::typst::model::Capable for #ident #args #clause {
-            fn vtable(&self, id: ::std::any::TypeId) -> ::std::option::Option<*const ()> {
-                #(#checks)*
-                None
-            }
-        }
-    })
-}