task_local context over context objects

- interner impls logically separate from API in orchid-base (default host interner still in base for testing)
- error reporting, logging, and a variety of other features passed down via context in extension, not yet in host to maintain library-ish profile, should consider options
- no global spawn mechanic, the host has a spawn function but extensions only get a stash for enqueuing async work in sync callbacks which is then explicitly, manually, and with strict order popped and awaited
- still deadlocks nondeterministically for some ungodly reason

orchid-api-derive/src/decode.rs

@@ -14,8 +14,8 @@ pub fn derive(input: TokenStream) -> TokenStream {
 		impl #impl_generics orchid_api_traits::Decode for #name #ty_generics #where_clause {
 			async fn decode<R: orchid_api_traits::AsyncRead + ?Sized>(
 				mut read: std::pin::Pin<&mut R>
-			) -> Self {
-				#decode
+			) -> std::io::Result<Self> {
+				Ok(#decode)
 			}
 		}
 	};
@@ -30,7 +30,7 @@ fn decode_fields(fields: &syn::Fields) -> pm2::TokenStream {
 				let syn::Field { ty, ident, .. } = &f;
 				quote! {
 					#ident : (Box::pin(< #ty as orchid_api_traits::Decode>::decode(read.as_mut()))
-						as std::pin::Pin<Box<dyn std::future::Future<Output = _>>>).await
+						as std::pin::Pin<Box<dyn std::future::Future<Output = std::io::Result<_>>>>).await?
 				}
 			});
 			quote! { { #( #exprs, )* } }
@@ -40,7 +40,7 @@ fn decode_fields(fields: &syn::Fields) -> pm2::TokenStream {
 				let ty = &field.ty;
 				quote! {
 					(Box::pin(< #ty as orchid_api_traits::Decode>::decode(read.as_mut()))
-						as std::pin::Pin<Box<dyn std::future::Future<Output = _>>>).await,
+						as std::pin::Pin<Box<dyn std::future::Future<Output = std::io::Result<_>>>>).await?,
 				}
 			});
 			quote! { ( #( #exprs )* ) }
@@ -62,7 +62,7 @@ fn decode_body(data: &syn::Data) -> proc_macro2::TokenStream {
 				quote! { #id => Self::#ident #fields, }
 			});
 			quote! {
-				match <u8 as orchid_api_traits::Decode>::decode(read.as_mut()).await {
+				match <u8 as orchid_api_traits::Decode>::decode(read.as_mut()).await? {
 					#(#opts)*
 					x => panic!("Unrecognized enum kind {x}")
 				}

orchid-api-derive/src/encode.rs

@@ -17,8 +17,9 @@ pub fn derive(input: TokenStream) -> TokenStream {
 			async fn encode<W: orchid_api_traits::AsyncWrite + ?Sized>(
 				&self,
 				mut write: std::pin::Pin<&mut W>
-			) {
-				#encode
+			) -> std::io::Result<()> {
+				#encode;
+				Ok(())
 			}
 		}
 	};
@@ -43,7 +44,7 @@ fn encode_body(data: &syn::Data) -> Option<pm2::TokenStream> {
 				quote! {
 					Self::#ident #dest => {
 						(Box::pin((#i as u8).encode(write.as_mut()))
-							as std::pin::Pin<Box<dyn std::future::Future<Output = _>>>).await;
+							as std::pin::Pin<Box<dyn std::future::Future<Output = std::io::Result<()>>>>).await?;
 						#body
 					}
 				}
@@ -61,7 +62,7 @@ fn encode_body(data: &syn::Data) -> Option<pm2::TokenStream> {
 fn encode_names<T: ToTokens>(names: impl Iterator<Item = T>) -> pm2::TokenStream {
 	quote! { #(
 		(Box::pin(#names .encode(write.as_mut()))
-			as std::pin::Pin<Box<dyn std::future::Future<Output = _>>>).await;
+			as std::pin::Pin<Box<dyn std::future::Future<Output = std::io::Result<()>>>>).await?;
 	)* }
 }