Method refactor now compiles

Cargo.lock

@@ -952,7 +952,6 @@ dependencies = [
  "ordered-float",
  "pastey",
  "substack",
- "test_executors",
  "tokio",
  "tokio-util",
  "trait-set",

orchid-base/Cargo.toml

@@ -12,7 +12,10 @@ async-once-cell = "0.5.4"
 bound = "0.6.0"
 derive_destructure = "1.0.0"
 dyn-clone = "1.0.20"
-futures = { version = "0.3.31", features = ["std"], default-features = false }
+futures = { version = "0.3.31", default-features = false, features = [
+	"std",
+	"async-await",
+] }
 hashbrown = "0.16.1"
 itertools = "0.14.0"
 lazy_static = "1.5.0"

orchid-extension/src/atom.rs

@@ -2,6 +2,8 @@ use std::any::{Any, TypeId, type_name};
 use std::collections::HashMap;
 use std::fmt::{self, Debug};
 use std::future::Future;
+use std::io;
+use std::marker::PhantomData;
 use std::num::NonZeroU32;
 use std::ops::Deref;
 use std::pin::Pin;
@@ -9,14 +11,15 @@ use std::rc::Rc;
 
 use dyn_clone::{DynClone, clone_box};
 use futures::future::LocalBoxFuture;
-use futures::{AsyncRead, AsyncWrite, FutureExt, StreamExt, stream};
+use futures::{AsyncWrite, FutureExt, StreamExt, stream};
 use orchid_api_derive::Coding;
-use orchid_api_traits::{Coding, Decode, Encode, Request, enc_vec};
+use orchid_api_traits::{Coding, Decode, InHierarchy, Request, UnderRoot, enc_vec};
 use orchid_base::error::{OrcErrv, OrcRes, mk_errv, mk_errv_floating};
 use orchid_base::format::{FmtCtx, FmtUnit, Format, fmt, take_first};
 use orchid_base::interner::is;
 use orchid_base::location::Pos;
 use orchid_base::name::Sym;
+use orchid_base::reqnot::{Receipt, ReqHandle, ReqReader, ReqReaderExt};
 use trait_set::trait_set;
 
 use crate::api;
@@ -98,14 +101,17 @@ impl ForeignAtom {
 	pub(crate) fn new(handle: Rc<ExprHandle>, atom: api::Atom, pos: Pos) -> Self {
 		ForeignAtom { atom, expr: handle, pos }
 	}
-	pub async fn request<M: AtomMethod>(&self, m: M) -> Option<M::Response> {
+	pub async fn request<R: Request + UnderRoot<Root: AtomMethod>>(
+		&self,
+		r: R,
+	) -> Option<R::Response> {
 		let rep = (request(api::Fwd(
 			self.atom.clone(),
-			Sym::parse(M::NAME).await.unwrap().tok().to_api(),
-			enc_vec(&m),
+			Sym::parse(<R as UnderRoot>::Root::NAME).await.unwrap().tok().to_api(),
+			enc_vec(&r.into_root()),
 		)))
 		.await?;
-		Some(M::Response::decode_slice(&mut &rep[..]))
+		Some(R::Response::decode_slice(&mut &rep[..]))
 	}
 	pub async fn downcast<T: AtomicFeatures>(self) -> Result<TAtom<T>, NotTypAtom> {
 		TAtom::downcast(self.ex().handle()).await
@@ -154,23 +160,40 @@ impl Debug for NotTypAtom {
 	}
 }
 
-pub trait AtomMethod: Request + Coding {
+pub trait AtomMethod: Coding + InHierarchy {
 	const NAME: &str;
 }
 pub trait Supports<M: AtomMethod>: AtomCard {
-	fn handle(&self, req: M) -> impl Future<Output = <M as Request>::Response>;
+	fn handle<'a>(
+		&self,
+		hand: Box<dyn ReqHandle<'a> + '_>,
+		req: M,
+	) -> impl Future<Output = io::Result<Receipt<'a>>>;
 }
 
-trait_set! {
-	trait AtomReqCb<A> = for<'a> Fn(
-		&'a A,
-		Pin<&'a mut dyn AsyncRead>,
-		Pin<&'a mut dyn AsyncWrite>,
-	) -> LocalBoxFuture<'a, ()>
+trait HandleAtomMethod<A> {
+	fn handle<'a, 'b: 'a>(
+		&'a self,
+		atom: &'a A,
+		req: Box<dyn ReqReader<'b> + 'a>,
+	) -> LocalBoxFuture<'a, ()>;
+}
+struct AtomMethodHandler<M, A>(PhantomData<M>, PhantomData<A>);
+impl<M: AtomMethod, A: Supports<M>> HandleAtomMethod<A> for AtomMethodHandler<M, A> {
+	fn handle<'a, 'b: 'a>(
+		&'a self,
+		a: &'a A,
+		mut reader: Box<dyn ReqReader<'b> + 'a>,
+	) -> LocalBoxFuture<'a, ()> {
+		Box::pin(async {
+			let req = reader.read_req::<M>().await.unwrap();
+			let _ = Supports::<M>::handle(a, reader.finish().await, req).await.unwrap();
+		})
+	}
 }
 
 pub struct MethodSetBuilder<A: AtomCard> {
-	handlers: Vec<(&'static str, Rc<dyn AtomReqCb<A>>)>,
+	handlers: Vec<(&'static str, Rc<dyn HandleAtomMethod<A>>)>,
 }
 impl<A: AtomCard> MethodSetBuilder<A> {
 	pub fn new() -> Self { Self { handlers: vec![] } }
@@ -178,15 +201,7 @@ impl<A: AtomCard> MethodSetBuilder<A> {
 	pub fn handle<M: AtomMethod>(mut self) -> Self
 	where A: Supports<M> {
 		assert!(!M::NAME.is_empty(), "AtomMethod::NAME cannoot be empty");
-		self.handlers.push((
-			M::NAME,
-			Rc::new(move |a: &A, req: Pin<&mut dyn AsyncRead>, rep: Pin<&mut dyn AsyncWrite>| {
-				async {
-					Supports::<M>::handle(a, M::decode(req).await.unwrap()).await.encode(rep).await.unwrap()
-				}
-				.boxed_local()
-			}),
-		));
+		self.handlers.push((M::NAME, Rc::new(AtomMethodHandler::<M, A>(PhantomData, PhantomData))));
 		self
 	}
 
@@ -201,20 +216,19 @@ impl<A: AtomCard> MethodSetBuilder<A> {
 }
 
 pub struct MethodSet<A: AtomCard> {
-	handlers: HashMap<Sym, Rc<dyn AtomReqCb<A>>>,
+	handlers: HashMap<Sym, Rc<dyn HandleAtomMethod<A>>>,
 }
 impl<A: AtomCard> MethodSet<A> {
 	pub(crate) async fn dispatch<'a>(
-		&'a self,
-		atom: &'a A,
+		&self,
+		atom: &'_ A,
 		key: Sym,
-		req: Pin<&'a mut dyn AsyncRead>,
-		rep: Pin<&'a mut dyn AsyncWrite>,
+		req: Box<dyn ReqReader<'a> + 'a>,
 	) -> bool {
 		match self.handlers.get(&key) {
 			None => false,
 			Some(handler) => {
-				handler(atom, req, rep).await;
+				handler.handle(atom, req).await;
 				true
 			},
 		}
@@ -243,13 +257,13 @@ impl<A: AtomicFeatures> TAtom<A> {
 			},
 		}
 	}
-	pub async fn request<M: AtomMethod>(&self, req: M) -> M::Response
-	where A: Supports<M> {
-		M::Response::decode_slice(
+	pub async fn request<R: Request + UnderRoot<Root: AtomMethod>>(&self, req: R) -> R::Response
+	where A: Supports<<R as UnderRoot>::Root> {
+		R::Response::decode_slice(
 			&mut &(request(api::Fwd(
 				self.untyped.atom.clone(),
-				Sym::parse(M::NAME).await.unwrap().tok().to_api(),
-				enc_vec(&req),
+				Sym::parse(<R as UnderRoot>::Root::NAME).await.unwrap().tok().to_api(),
+				enc_vec(&req.into_root()),
 			)))
 			.await
 			.unwrap()[..],
@@ -278,12 +292,11 @@ pub trait AtomDynfo: 'static {
 	fn call<'a>(&'a self, ctx: AtomCtx<'a>, arg: Expr) -> LocalBoxFuture<'a, GExpr>;
 	fn call_ref<'a>(&'a self, ctx: AtomCtx<'a>, arg: Expr) -> LocalBoxFuture<'a, GExpr>;
 	fn print<'a>(&'a self, ctx: AtomCtx<'a>) -> LocalBoxFuture<'a, FmtUnit>;
-	fn handle_req<'a, 'b: 'a, 'c: 'a>(
+	fn handle_req<'a>(
 		&'a self,
 		ctx: AtomCtx<'a>,
 		key: Sym,
-		req: Pin<&'b mut dyn AsyncRead>,
-		rep: Pin<&'c mut dyn AsyncWrite>,
+		req: Box<dyn ReqReader<'a> + 'a>,
 	) -> LocalBoxFuture<'a, bool>;
 	fn command<'a>(&'a self, ctx: AtomCtx<'a>) -> LocalBoxFuture<'a, OrcRes<Option<GExpr>>>;
 	fn serialize<'a, 'b: 'a>(

orchid-extension/src/atom_owned.rs

@@ -11,7 +11,7 @@ use std::rc::Rc;
 use async_once_cell::OnceCell;
 use dyn_clone::{DynClone, clone_box};
 use futures::future::{LocalBoxFuture, ready};
-use futures::{AsyncRead, AsyncWrite, FutureExt};
+use futures::{AsyncWrite, FutureExt};
 use futures_locks::{RwLock, RwLockReadGuard};
 use itertools::Itertools;
 use memo_map::MemoMap;
@@ -119,17 +119,16 @@ impl<T: OwnedAtom> AtomDynfo for OwnedAtomDynfo<T> {
 	fn print(&self, AtomCtx(_, id): AtomCtx<'_>) -> LocalBoxFuture<'_, FmtUnit> {
 		Box::pin(async move { AtomReadGuard::new(id.unwrap()).await.dyn_print().await })
 	}
-	fn handle_req<'a, 'b: 'a, 'c: 'a>(
+	fn handle_req<'a>(
 		&'a self,
-		AtomCtx(_, id): AtomCtx,
+		AtomCtx(_, id): AtomCtx<'a>,
 		key: Sym,
-		req: Pin<&'b mut dyn AsyncRead>,
-		rep: Pin<&'c mut dyn AsyncWrite>,
+		req: Box<dyn orchid_base::reqnot::ReqReader<'a> + 'a>,
 	) -> LocalBoxFuture<'a, bool> {
 		Box::pin(async move {
 			let a = AtomReadGuard::new(id.unwrap()).await;
 			let ms = self.ms.get_or_init(self.msbuild.pack()).await;
-			ms.dispatch(a.as_any_ref().downcast_ref().unwrap(), key, req, rep).await
+			ms.dispatch(a.as_any_ref().downcast_ref().unwrap(), key, req).await
 		})
 	}
 	fn command<'a>(

orchid-extension/src/atom_thin.rs

@@ -4,7 +4,7 @@ use std::pin::Pin;
 
 use async_once_cell::OnceCell;
 use futures::future::LocalBoxFuture;
-use futures::{AsyncRead, AsyncWrite, FutureExt};
+use futures::{AsyncWrite, FutureExt};
 use orchid_api_traits::{Coding, enc_vec};
 use orchid_base::error::OrcRes;
 use orchid_base::format::FmtUnit;
@@ -54,16 +54,15 @@ impl<T: ThinAtom> AtomDynfo for ThinAtomDynfo<T> {
 	fn call_ref<'a>(&'a self, AtomCtx(buf, ..): AtomCtx<'a>, arg: Expr) -> LocalBoxFuture<'a, GExpr> {
 		Box::pin(async move { T::decode_slice(&mut &buf[..]).call(arg).await })
 	}
-	fn handle_req<'a, 'm1: 'a, 'm2: 'a>(
+	fn handle_req<'a>(
 		&'a self,
-		AtomCtx(buf, _): AtomCtx<'a>,
+		AtomCtx(buf, ..): AtomCtx<'a>,
 		key: Sym,
-		req: Pin<&'m1 mut dyn AsyncRead>,
-		rep: Pin<&'m2 mut dyn AsyncWrite>,
+		req: Box<dyn orchid_base::reqnot::ReqReader<'a> + 'a>,
 	) -> LocalBoxFuture<'a, bool> {
 		Box::pin(async move {
 			let ms = self.ms.get_or_init(self.msbuild.pack()).await;
-			ms.dispatch(&T::decode_slice(&mut &buf[..]), key, req, rep).await
+			ms.dispatch(&T::decode_slice(&mut &buf[..]), key, req).await
 		})
 	}
 	fn command<'a>(

orchid-extension/src/entrypoint.rs

@@ -1,12 +1,12 @@
 use std::cell::RefCell;
 use std::future::Future;
+use std::mem;
 use std::num::NonZero;
 use std::pin::Pin;
 use std::rc::Rc;
-use std::{io, mem};
 
 use futures::future::{LocalBoxFuture, join_all};
-use futures::{AsyncRead, AsyncWrite, AsyncWriteExt, StreamExt, stream};
+use futures::{AsyncWriteExt, StreamExt, stream};
 use hashbrown::HashMap;
 use itertools::Itertools;
 use orchid_api_traits::{Decode, Encode, Request, UnderRoot, enc_vec};
@@ -17,8 +17,7 @@ use orchid_base::logging::{log, with_logger};
 use orchid_base::name::Sym;
 use orchid_base::parse::{Comment, Snippet};
 use orchid_base::reqnot::{
-	Client, ClientExt, CommCtx, MsgReader, MsgReaderExt, Receipt, RepWriter, ReqHandle, ReqHandleExt,
-	ReqReader, ReqReaderExt, Witness, io_comm,
+	Client, ClientExt, CommCtx, MsgReader, MsgReaderExt, ReqHandleExt, ReqReaderExt, Witness, io_comm,
 };
 use orchid_base::stash::with_stash;
 use orchid_base::tree::{TokenVariant, ttv_from_api};
@@ -39,6 +38,7 @@ use crate::reflection::with_refl_roots;
 use crate::system::{SysCtx, atom_by_idx, cted, with_sys};
 use crate::system_ctor::{CtedObj, DynSystemCtor, SystemCtor};
 use crate::tree::{TreeIntoApiCtxImpl, get_lazy, with_lazy_member_store};
+use crate::trivial_req::TrivialReqCycle;
 
 task_local::task_local! {
 	static CLIENT: Rc<dyn Client>;
@@ -219,36 +219,6 @@ impl ExtensionBuilder {
 								let fwd_tok = Witness::of(&fwd);
 								let api::SysFwded(sys_id, payload) = fwd;
 								with_sys_record(sys_id, async {
-									struct TrivialReqCycle<'a> {
-										req: &'a [u8],
-										rep: &'a mut Vec<u8>,
-									}
-									impl<'a> ReqReader<'a> for TrivialReqCycle<'a> {
-										fn reader(&mut self) -> Pin<&mut dyn AsyncRead> {
-											Pin::new(&mut self.req) as Pin<&mut _>
-										}
-										fn finish(self: Box<Self>) -> LocalBoxFuture<'a, Box<dyn ReqHandle<'a> + 'a>> {
-											Box::pin(async { self as Box<_> })
-										}
-									}
-									impl<'a> ReqHandle<'a> for TrivialReqCycle<'a> {
-										fn start_reply(
-											self: Box<Self>,
-										) -> LocalBoxFuture<'a, io::Result<Box<dyn RepWriter<'a> + 'a>>> {
-											Box::pin(async { Ok(self as Box<_>) })
-										}
-									}
-									impl<'a> RepWriter<'a> for TrivialReqCycle<'a> {
-										fn writer(&mut self) -> Pin<&mut dyn AsyncWrite> {
-											Pin::new(&mut self.rep) as Pin<&mut _>
-										}
-										fn finish(
-											self: Box<Self>,
-										) -> LocalBoxFuture<'a, io::Result<orchid_base::reqnot::Receipt<'a>>>
-										{
-											Box::pin(async { Ok(Receipt::_new()) })
-										}
-									}
 									let mut reply = Vec::new();
 									let req = TrivialReqCycle { req: &payload, rep: &mut reply };
 									let _ = cted().inst().dyn_request(Box::new(req)).await;
@@ -349,14 +319,8 @@ impl ExtensionBuilder {
 											let api::Fwded(_, key, payload) = &fwded;
 											let mut reply = Vec::new();
 											let key = Sym::from_api(*key).await;
-											let some = nfo
-												.handle_req(
-													actx,
-													key,
-													Pin::<&mut &[u8]>::new(&mut &payload[..]),
-													Pin::<&mut Vec<_>>::new(&mut reply),
-												)
-												.await;
+											let req = TrivialReqCycle { req: payload, rep: &mut reply };
+											let some = nfo.handle_req(actx, key, Box::new(req)).await;
 											handle.reply(fwded, &some.then_some(reply)).await
 										},
 										api::AtomReq::CallRef(call @ api::CallRef(_, arg)) => {

orchid-extension/src/lib.rs

@@ -17,7 +17,9 @@ pub mod logger;
 pub mod other_system;
 pub mod parser;
 pub mod reflection;
+pub mod stream_reqs;
 pub mod system;
 pub mod system_ctor;
 pub mod tokio;
 pub mod tree;
+mod trivial_req;

orchid-extension/src/stream_reqs.rs

@@ -0,0 +1,72 @@
+use orchid_api_derive::{Coding, Hierarchy};
+use orchid_api_traits::Request;
+
+use crate::atom::AtomMethod;
+
+/// Represents [std::io::ErrorKind] values that are produced while operating on
+/// already-opened files
+#[derive(Clone, Debug, Hash, PartialEq, Eq, Coding)]
+pub enum IoErrorKind {
+	BrokenPipe,
+	UnexpectedEof,
+	ConnectionAborted,
+	Other,
+}
+
+/// Represents [std::io::Error] values that are produced while operating on
+/// already-opened files
+#[derive(Clone, Debug, Coding)]
+pub struct IoError {
+	pub message: String,
+	pub kind: IoErrorKind,
+}
+
+/// Read at most the specified number of bytes, but at least one byte, from a
+/// stream. If the returned vector is empty, the stream has reached its end.
+#[derive(Clone, Debug, Coding, Hierarchy)]
+pub struct ReadReq(pub u64);
+impl Request for ReadReq {
+	type Response = Result<Vec<u8>, IoError>;
+}
+impl AtomMethod for ReadReq {
+	const NAME: &str = "orchid::stream::read";
+}
+
+/// Write the specified number of bytes into a stream.
+#[derive(Clone, Debug, Coding, Hierarchy)]
+#[extends(OutputReq)]
+pub struct WriteReq {
+	pub data: Vec<u8>,
+}
+impl Request for WriteReq {
+	type Response = Result<(), IoError>;
+}
+
+/// Flush a stream, ensuring that all data reached its destination.
+#[derive(Clone, Debug, Coding, Hierarchy)]
+#[extends(OutputReq)]
+pub struct FlushReq;
+impl Request for FlushReq {
+	type Response = Result<(), IoError>;
+}
+
+/// Close a stream, indicating that no further data will be sent through it.
+#[derive(Clone, Debug, Coding, Hierarchy)]
+#[extends(OutputReq)]
+pub struct CloseReq;
+impl Request for CloseReq {
+	type Response = Result<(), IoError>;
+}
+
+/// Operations on outbound streams across extension boundaries.
+#[derive(Clone, Debug, Coding, Hierarchy)]
+#[extendable]
+#[allow(clippy::enum_variant_names)]
+pub enum OutputReq {
+	WriteReq(WriteReq),
+	FlushReq(FlushReq),
+	CloseReq(CloseReq),
+}
+impl AtomMethod for OutputReq {
+	const NAME: &str = "orchid::stream::write";
+}

orchid-extension/src/trivial_req.rs

@@ -0,0 +1,28 @@
+use std::io;
+use std::pin::Pin;
+
+use futures::future::LocalBoxFuture;
+use futures::{AsyncRead, AsyncWrite};
+use orchid_base::reqnot::{Receipt, RepWriter, ReqHandle, ReqReader};
+
+pub struct TrivialReqCycle<'a> {
+	pub req: &'a [u8],
+	pub rep: &'a mut Vec<u8>,
+}
+impl<'a> ReqReader<'a> for TrivialReqCycle<'a> {
+	fn reader(&mut self) -> Pin<&mut dyn AsyncRead> { Pin::new(&mut self.req) as Pin<&mut _> }
+	fn finish(self: Box<Self>) -> LocalBoxFuture<'a, Box<dyn ReqHandle<'a> + 'a>> {
+		Box::pin(async { self as Box<_> })
+	}
+}
+impl<'a> ReqHandle<'a> for TrivialReqCycle<'a> {
+	fn start_reply(self: Box<Self>) -> LocalBoxFuture<'a, io::Result<Box<dyn RepWriter<'a> + 'a>>> {
+		Box::pin(async { Ok(self as Box<_>) })
+	}
+}
+impl<'a> RepWriter<'a> for TrivialReqCycle<'a> {
+	fn writer(&mut self) -> Pin<&mut dyn AsyncWrite> { Pin::new(&mut self.rep) as Pin<&mut _> }
+	fn finish(self: Box<Self>) -> LocalBoxFuture<'a, io::Result<Receipt<'a>>> {
+		Box::pin(async { Ok(Receipt::_new()) })
+	}
+}

orchid-host/Cargo.toml

@@ -26,7 +26,6 @@ orchid-extension = { version = "0.1.0", path = "../orchid-extension", optional =
 ordered-float = "5.1.0"
 pastey = "0.2.1"
 substack = "1.1.1"
-test_executors = "0.4.1"
 tokio = { version = "1.49.0", features = ["process"], optional = true }
 tokio-util = { version = "0.7.18", features = ["compat"], optional = true }
 trait-set = "0.3.0"

orchid-host/src/atom.rs

@@ -3,10 +3,14 @@ use std::rc::{Rc, Weak};
 
 use async_once_cell::OnceCell;
 use derive_destructure::destructure;
+#[cfg(feature = "orchid-extension")]
+use orchid_api_traits::{Request, UnderRoot};
 use orchid_base::format::{FmtCtx, FmtUnit, Format, take_first_fmt};
 use orchid_base::location::Pos;
 use orchid_base::reqnot::ClientExt;
 use orchid_base::tree::AtomRepr;
+#[cfg(feature = "orchid-extension")]
+use orchid_extension::atom::AtomMethod;
 
 use crate::api;
 use crate::ctx::Ctx;
@@ -56,6 +60,21 @@ impl AtomHand {
 		Self(Rc::new(AtomData { owner, drop, data, display: OnceCell::new() }))
 	}
 	#[must_use]
+	#[cfg(feature = "orchid-extension")]
+	pub async fn ipc<M: Request + UnderRoot<Root: AtomMethod>>(
+		&self,
+		method: M,
+	) -> Option<M::Response> {
+		use orchid_api_traits::{Decode, Encode};
+		use orchid_base::name::Sym;
+
+		let name = Sym::parse(<M as UnderRoot>::Root::NAME).await.unwrap();
+		let mut buf = Vec::new();
+		method.into_root().encode_vec(&mut buf);
+		let reply_buf = self.req(name.to_api(), buf).await?;
+		Some(M::Response::decode_slice(&mut &reply_buf[..]))
+	}
+	#[must_use]
 	pub async fn call(self, arg: Expr) -> Expr {
 		let owner_sys = self.0.owner.clone();
 		let ctx = owner_sys.ctx();

orchid-host/src/dylib.rs

@@ -2,9 +2,13 @@ use std::io;
 use std::path::{Path, PathBuf};
 use std::sync::{Arc, Mutex};
 
+use futures::io::BufReader;
+use futures::{AsyncBufReadExt, StreamExt};
 use hashbrown::HashMap;
-use libloading::Library;
+use libloading::{Library, Symbol};
 use orchid_base::binary::vt_to_future;
+use orchid_base::logging::log;
+use unsync_pipe::pipe;
 
 use crate::api;
 use crate::ctx::Ctx;
@@ -23,23 +27,16 @@ fn load_dylib(path: &Path) -> Result<Arc<Library>, libloading::Error> {
 	}
 }
 
-#[cfg(feature = "tokio")]
 pub async fn ext_dylib(path: &Path, ctx: Ctx) -> Result<ExtPort, libloading::Error> {
-	use futures::io::BufReader;
-	use futures::{AsyncBufReadExt, StreamExt};
-	use libloading::Symbol;
-	use unsync_pipe::pipe;
-
 	let (write_input, input) = pipe(1024);
 	let (output, read_output) = pipe(1024);
-	let (log, read_log) = pipe(1024);
+	let (write_log, read_log) = pipe(1024);
 	let log_path = path.to_string_lossy().to_string();
 	let _ = ctx.spawn(async move {
-		use orchid_base::logging::log;
 		let mut lines = BufReader::new(read_log).lines();
 		while let Some(line) = lines.next().await {
 			match line {
-				Ok(line) => writeln!(log("stderr"), "{log_path} err> {line}").await,
+				Ok(line) => writeln!(log("stderr"), "dylib {log_path} err> {line}").await,
 				Err(e) => match e.kind() {
 					io::ErrorKind::BrokenPipe | io::ErrorKind::UnexpectedEof => break,
 					_ => panic!("Error while reading stderr {e}"),
@@ -56,7 +53,7 @@ pub async fn ext_dylib(path: &Path, ctx: Ctx) -> Result<ExtPort, libloading::Err
 		let _ = unsafe { (data as *mut Ctx).as_mut().unwrap().spawn(vt_to_future(vt)) };
 	}
 	let spawner = api::binary::SpawnerBin { data, drop, spawn };
-	let cx = api::binary::ExtensionContext { input, output, log, spawner };
+	let cx = api::binary::ExtensionContext { input, output, log: write_log, spawner };
 	unsafe { (entrypoint)(cx) };
 	Ok(ExtPort { input: Box::pin(write_input), output: Box::pin(read_output) })
 }

orchid-host/src/inline.rs

@@ -0,0 +1,45 @@
+#[cfg(feature = "orchid-extension")]
+use orchid_extension as ox;
+
+#[cfg(feature = "orchid-extension")]
+use crate::ctx::Ctx;
+#[cfg(feature = "orchid-extension")]
+use crate::extension::ExtPort;
+
+#[cfg(feature = "orchid-extension")]
+pub async fn ext_inline(builder: ox::entrypoint::ExtensionBuilder, ctx: Ctx) -> ExtPort {
+	use std::io;
+	use std::rc::Rc;
+
+	use futures::io::BufReader;
+	use futures::{AsyncBufReadExt, StreamExt};
+	use orchid_base::logging::log;
+	use unsync_pipe::pipe;
+
+	let (in_stdin, out_stdin) = pipe(1024);
+	let (in_stdout, out_stdout) = pipe(1024);
+	let (in_stderr, out_stderr) = pipe(1024);
+
+	let name = builder.name;
+
+	std::mem::drop(ctx.spawn(async move {
+		let mut lines = BufReader::new(out_stderr).lines();
+		while let Some(line) = lines.next().await {
+			match line {
+				Ok(line) => writeln!(log("stderr"), "inline {name} err> {line}").await,
+				Err(e) => match e.kind() {
+					io::ErrorKind::BrokenPipe | io::ErrorKind::UnexpectedEof => break,
+					_ => panic!("Error while reading stderr {e}"),
+				},
+			}
+		}
+	}));
+
+	builder.build(ox::ext_port::ExtPort {
+		input: Box::pin(out_stdin),
+		output: Box::pin(in_stdout),
+		log: Box::pin(in_stderr),
+		spawn: Rc::new(move |fut| std::mem::drop(ctx.spawn(fut))),
+	});
+	ExtPort { input: Box::pin(in_stdin), output: Box::pin(out_stdout) }
+}

orchid-host/src/lib.rs

@@ -3,15 +3,18 @@ use orchid_api as api;
 pub mod atom;
 pub mod ctx;
 pub mod dealias;
+#[cfg(feature = "tokio")]
 pub mod dylib;
 pub mod execute;
 pub mod expr;
 pub mod expr_store;
 pub mod extension;
+pub mod inline;
 pub mod lex;
 pub mod logger;
 pub mod parse;
 pub mod parsed;
+#[cfg(feature = "tokio")]
 pub mod subprocess;
 mod sys_parser;
 pub mod system;

orchid-host/src/subprocess.rs

@@ -3,14 +3,12 @@ use std::{io, process};
 use futures::io::BufReader;
 use futures::{self, AsyncBufReadExt, StreamExt};
 use orchid_base::logging::log;
-#[cfg(feature = "tokio")]
 use tokio_util::compat::{TokioAsyncReadCompatExt, TokioAsyncWriteCompatExt};
 
 use crate::ctx::Ctx;
 use crate::extension::ExtPort;
 
-#[cfg(feature = "tokio")]
-pub async fn ext_command(cmd: std::process::Command, ctx: Ctx) -> io::Result<ExtPort> {
+pub async fn ext_command(cmd: process::Command, ctx: Ctx) -> io::Result<ExtPort> {
 	let name = cmd.get_program().to_string_lossy().to_string();
 	let mut child = tokio::process::Command::from(cmd)
 		.stdin(process::Stdio::piped())
@@ -25,9 +23,13 @@ pub async fn ext_command(cmd: std::process::Command, ctx: Ctx) -> io::Result<Ext
 		let _ = child;
 		let mut lines = BufReader::new(child_stderr.compat()).lines();
 		while let Some(line) = lines.next().await {
-			// route stderr with an empty category string. This is not the intended logging
-			// method
-			writeln!(log("stderr"), "{} err> {}", name, line.expect("Readline implies this")).await;
+			match line {
+				Ok(line) => writeln!(log("stderr"), "subproc {name} err> {line}").await,
+				Err(e) => match e.kind() {
+					io::ErrorKind::BrokenPipe | io::ErrorKind::UnexpectedEof => break,
+					_ => panic!("Error while reading stderr {e}"),
+				},
+			}
 		}
 	}));
 	Ok(ExtPort { input: Box::pin(stdin.compat_write()), output: Box::pin(stdout.compat()) })

orchid-std/src/std/number/num_atom.rs

@@ -1,9 +1,12 @@
+use std::io;
+
 use orchid_api_derive::{Coding, Hierarchy};
 use orchid_api_traits::Request;
 use orchid_base::error::OrcRes;
 use orchid_base::format::FmtUnit;
 use orchid_base::name::Sym;
 use orchid_base::number::Numeric;
+use orchid_base::reqnot::{Receipt, ReqHandle, ReqHandleExt};
 use orchid_base::sym;
 use orchid_extension::atom::{Atomic, MethodSetBuilder, Supports, TAtom};
 use orchid_extension::atom_thin::{ThinAtom, ThinVariant};
@@ -14,7 +17,7 @@ use orchid_extension::system::sys_req;
 use ordered_float::NotNan;
 use rust_decimal::prelude::Zero;
 
-use crate::std::protocol::types::{GetImplMethod, GetTagIdMethod};
+use crate::std::protocol::types::{GetImpl, ProtocolMethod};
 use crate::std::std_system::StdReq;
 use crate::std::string::to_string::ToStringMethod;
 use crate::{StdSystem, api};
@@ -32,10 +35,7 @@ impl Atomic for Int {
 	type Variant = ThinVariant;
 	type Data = Self;
 	fn reg_reqs() -> MethodSetBuilder<Self> {
-		MethodSetBuilder::new()
-			.handle::<GetTagIdMethod>()
-			.handle::<GetImplMethod>()
-			.handle::<ToStringMethod>()
+		MethodSetBuilder::new().handle::<ProtocolMethod>().handle::<ToStringMethod>()
 	}
 }
 impl ThinAtom for Int {
@@ -51,14 +51,16 @@ impl ToExpr for Int {
 		Expr::deserialize(sys_req::<StdSystem, _>(CreateInt(self)).await).await.to_gen().await
 	}
 }
-impl Supports<GetTagIdMethod> for Int {
-	async fn handle(&self, _: GetTagIdMethod) -> <GetTagIdMethod as Request>::Response {
-		sym!(std::number::Int).to_api()
-	}
-}
-impl Supports<GetImplMethod> for Int {
-	async fn handle(&self, req: GetImplMethod) -> <GetImplMethod as Request>::Response {
-		let name = Sym::from_api(req.0).await;
+impl Supports<ProtocolMethod> for Int {
+	async fn handle<'a>(
+		&self,
+		hand: Box<dyn ReqHandle<'a> + '_>,
+		req: ProtocolMethod,
+	) -> io::Result<Receipt<'a>> {
+		match req {
+			ProtocolMethod::GetTagId(req) => hand.reply(&req, &sym!(std::number::Int).to_api()).await,
+			ProtocolMethod::GetImpl(ref req @ GetImpl(key)) => {
+				let name = Sym::from_api(key).await;
 				let val = if name == sym!(std::ops::add) {
 					sym_ref(sym!(std::number::add))
 				} else if name == sym!(std::ops::sub) {
@@ -70,14 +72,20 @@ impl Supports<GetImplMethod> for Int {
 				} else if name == sym!(std::ops::mod) {
 					sym_ref(sym!(std::number::imod))
 				} else {
-			return None;
+					return hand.reply(req, &None).await;
 				};
-		Some(val.create().await.serialize().await)
+				hand.reply(req, &Some(val.create().await.serialize().await)).await
+			},
+		}
 	}
 }
 impl Supports<ToStringMethod> for Int {
-	async fn handle(&self, _: ToStringMethod) -> <ToStringMethod as Request>::Response {
-		self.0.to_string()
+	async fn handle<'a>(
+		&self,
+		hand: Box<dyn ReqHandle<'a> + '_>,
+		req: ToStringMethod,
+	) -> io::Result<Receipt<'a>> {
+		hand.reply(&req, &self.0.to_string()).await
 	}
 }
 
@@ -94,10 +102,7 @@ impl Atomic for Float {
 	type Variant = ThinVariant;
 	type Data = Self;
 	fn reg_reqs() -> MethodSetBuilder<Self> {
-		MethodSetBuilder::new()
-			.handle::<GetTagIdMethod>()
-			.handle::<GetImplMethod>()
-			.handle::<ToStringMethod>()
+		MethodSetBuilder::new().handle::<ProtocolMethod>().handle::<ToStringMethod>()
 	}
 }
 impl ThinAtom for Float {
@@ -113,14 +118,16 @@ impl ToExpr for Float {
 		Expr::deserialize(sys_req::<StdSystem, _>(CreateFloat(self)).await).await.to_gen().await
 	}
 }
-impl Supports<GetTagIdMethod> for Float {
-	async fn handle(&self, _: GetTagIdMethod) -> <GetTagIdMethod as Request>::Response {
-		sym!(std::number::Float).to_api()
-	}
-}
-impl Supports<GetImplMethod> for Float {
-	async fn handle(&self, req: GetImplMethod) -> <GetImplMethod as Request>::Response {
-		let name = Sym::from_api(req.0).await;
+impl Supports<ProtocolMethod> for Float {
+	async fn handle<'a>(
+		&self,
+		hand: Box<dyn ReqHandle<'a> + '_>,
+		req: ProtocolMethod,
+	) -> io::Result<Receipt<'a>> {
+		match req {
+			ProtocolMethod::GetTagId(req) => hand.reply(&req, &sym!(std::number::Float).to_api()).await,
+			ProtocolMethod::GetImpl(ref req @ GetImpl(key)) => {
+				let name = Sym::from_api(key).await;
 				let val = if name == sym!(std::ops::add) {
 					sym_ref(sym!(std::number::add))
 				} else if name == sym!(std::ops::sub) {
@@ -132,14 +139,20 @@ impl Supports<GetImplMethod> for Float {
 				} else if name == sym!(std::ops::mod) {
 					sym_ref(sym!(std::number::fmod))
 				} else {
-			return None;
+					return hand.reply(req, &None).await;
 				};
-		Some(val.create().await.serialize().await)
+				hand.reply(req, &Some(val.create().await.serialize().await)).await
+			},
+		}
 	}
 }
 impl Supports<ToStringMethod> for Float {
-	async fn handle(&self, _: ToStringMethod) -> <ToStringMethod as Request>::Response {
-		self.0.to_string()
+	async fn handle<'a>(
+		&self,
+		hand: Box<dyn ReqHandle<'a> + '_>,
+		req: ToStringMethod,
+	) -> io::Result<Receipt<'a>> {
+		hand.reply(&req, &self.0.to_string()).await
 	}
 }
 

orchid-std/src/std/protocol/types.rs

@@ -1,5 +1,6 @@
 use std::borrow::Cow;
 use std::cell::RefCell;
+use std::io;
 use std::rc::Rc;
 
 use futures::FutureExt;
@@ -13,6 +14,7 @@ use orchid_base::error::{OrcRes, mk_errv};
 use orchid_base::format::fmt;
 use orchid_base::interner::{ev, is};
 use orchid_base::name::{NameLike, Sym, VName};
+use orchid_base::reqnot::ReqHandleExt;
 use orchid_extension::atom::{AtomMethod, Atomic, ForeignAtom, MethodSetBuilder, Supports, TAtom};
 use orchid_extension::atom_owned::{OwnedAtom, OwnedVariant, own};
 use orchid_extension::conv::{ClonableToExprDyn, ToExpr};
@@ -33,40 +35,48 @@ pub struct Tag {
 impl Atomic for Tag {
 	type Data = api::TStrv;
 	type Variant = OwnedVariant;
-	fn reg_reqs() -> MethodSetBuilder<Self> {
-		MethodSetBuilder::new().handle::<GetTagIdMethod>().handle::<GetImplMethod>()
-	}
+	fn reg_reqs() -> MethodSetBuilder<Self> { MethodSetBuilder::new().handle::<ProtocolMethod>() }
 }
 impl OwnedAtom for Tag {
 	type Refs = Never;
 	async fn val(&self) -> Cow<'_, Self::Data> { Cow::Owned(self.id.to_api()) }
 }
-impl Supports<GetTagIdMethod> for Tag {
-	async fn handle(&self, _: GetTagIdMethod) -> <GetTagIdMethod as Request>::Response {
-		self.id.to_api()
+impl Supports<ProtocolMethod> for Tag {
+	async fn handle<'a>(
+		&self,
+		hand: Box<dyn orchid_base::reqnot::ReqHandle<'a> + '_>,
+		req: ProtocolMethod,
+	) -> std::io::Result<orchid_base::reqnot::Receipt<'a>> {
+		match req {
+			ProtocolMethod::GetTagId(req) => hand.reply(&req, &self.id.to_api()).await,
+			ProtocolMethod::GetImpl(ref req @ GetImpl(key)) =>
+				hand
+					.reply(req, &self.impls.get(&Sym::from_api(key).await).map(|expr| expr.handle().ticket()))
+					.await,
 		}
-}
-impl Supports<GetImplMethod> for Tag {
-	async fn handle(&self, req: GetImplMethod) -> <GetImplMethod as Request>::Response {
-		self.impls.get(&Sym::from_api(req.0).await).map(|expr| expr.handle().ticket())
 	}
 }
 
-#[derive(Clone, Debug, Coding)]
-pub struct GetImplMethod(pub api::TStrv);
-impl Request for GetImplMethod {
+#[derive(Clone, Debug, Coding, Hierarchy)]
+#[extends(ProtocolMethod)]
+pub struct GetImpl(pub api::TStrv);
+impl Request for GetImpl {
 	type Response = Option<api::ExprTicket>;
 }
-impl AtomMethod for GetImplMethod {
-	const NAME: &str = "std::protocol::get_impl";
-}
-#[derive(Clone, Debug, Coding)]
-pub struct GetTagIdMethod;
-impl Request for GetTagIdMethod {
+#[derive(Clone, Debug, Coding, Hierarchy)]
+#[extends(ProtocolMethod)]
+pub struct GetTagId;
+impl Request for GetTagId {
 	type Response = api::TStrv;
 }
-impl AtomMethod for GetTagIdMethod {
-	const NAME: &str = "std::protocol::get_tag_id";
+#[derive(Clone, Debug, Coding, Hierarchy)]
+#[extendable]
+pub enum ProtocolMethod {
+	GetTagId(GetTagId),
+	GetImpl(GetImpl),
+}
+impl AtomMethod for ProtocolMethod {
+	const NAME: &str = "std::protocol";
 }
 
 #[derive(Clone, Debug)]
@@ -82,21 +92,25 @@ impl OwnedAtom for Tagged {
 	type Refs = Never;
 	async fn val(&self) -> Cow<'_, Self::Data> { Cow::Owned(self.tag.id.to_api()) }
 }
-impl Supports<GetImplMethod> for Tagged {
-	async fn handle(&self, req: GetImplMethod) -> <GetImplMethod as Request>::Response {
-		self.tag.handle(req).await
+impl Supports<ProtocolMethod> for Tagged {
+	async fn handle<'a>(
+		&self,
+		hand: Box<dyn orchid_base::reqnot::ReqHandle<'a> + '_>,
+		req: ProtocolMethod,
+	) -> io::Result<orchid_base::reqnot::Receipt<'a>> {
+		self.tag.handle(hand, req).await
 	}
 }
 
 pub async fn get_impl(receiver: ForeignAtom, proto: ForeignAtom) -> OrcRes<Expr> {
-	let Some(proto_id) = proto.request(GetTagIdMethod).await else {
+	let Some(proto_id) = proto.request(GetTagId).await else {
 		return Err(mk_errv(
 			is("Not a protocol").await,
 			format!("Protocol ({}) does not have a tag ID", fmt(&proto).await),
 			[proto.pos()],
 		));
 	};
-	let Some(impl_val_opt) = receiver.request(GetImplMethod(proto_id)).await else {
+	let Some(impl_val_opt) = receiver.request(GetImpl(proto_id)).await else {
 		return Err(mk_errv(
 			is("Receiver not tagged").await,
 			format!("The receiver ({}) does not have a type tag", fmt(&receiver).await),
@@ -106,14 +120,14 @@ pub async fn get_impl(receiver: ForeignAtom, proto: ForeignAtom) -> OrcRes<Expr>
 	if let Some(impl_val) = impl_val_opt {
 		return Ok(Expr::deserialize(impl_val).await);
 	}
-	let Some(type_id) = receiver.request(GetTagIdMethod).await else {
+	let Some(type_id) = receiver.request(GetTagId).await else {
 		return Err(mk_errv(
 			is("Incorrect protocols implementation in extension").await,
 			format!("The receiver ({}) provides an impl table but no tag ID", fmt(&receiver).await),
 			[receiver.pos()],
 		));
 	};
-	let Some(impl_val_opt) = proto.request(GetImplMethod(type_id)).await else {
+	let Some(impl_val_opt) = proto.request(GetImpl(type_id)).await else {
 		return Err(mk_errv(
 			is("Incorrect protocols implementation in extension").await,
 			format!("Protocol ({}) provides a tag ID but no impl table", fmt(&proto).await),

orchid-std/src/std/record/record_atom.rs

@@ -1,4 +1,5 @@
 use std::borrow::Cow;
+use std::io;
 use std::pin::Pin;
 use std::rc::Rc;
 
@@ -9,6 +10,7 @@ use orchid_api_derive::Coding;
 use orchid_api_traits::{Encode, Request};
 use orchid_base::interner::{IStr, es};
 use orchid_base::name::Sym;
+use orchid_base::reqnot::{Receipt, ReqHandle, ReqHandleExt};
 use orchid_base::sym;
 use orchid_extension::atom::{Atomic, MethodSetBuilder, Supports};
 use orchid_extension::atom_owned::{DeserializeCtx, OwnedAtom, OwnedVariant};
@@ -16,16 +18,14 @@ use orchid_extension::expr::Expr;
 use orchid_extension::gen_expr::sym_ref;
 
 use crate::api;
-use crate::std::protocol::types::{GetImplMethod, GetTagIdMethod};
+use crate::std::protocol::types::{GetImpl, ProtocolMethod};
 
 #[derive(Clone)]
 pub struct RecordAtom(pub Rc<HashMap<IStr, Expr>>);
 impl Atomic for RecordAtom {
 	type Data = ();
 	type Variant = OwnedVariant;
-	fn reg_reqs() -> MethodSetBuilder<Self> {
-		MethodSetBuilder::new().handle::<GetTagIdMethod>().handle::<GetImplMethod>()
-	}
+	fn reg_reqs() -> MethodSetBuilder<Self> { MethodSetBuilder::new().handle::<ProtocolMethod>() }
 }
 impl OwnedAtom for RecordAtom {
 	type Refs = Vec<Expr>;
@@ -43,22 +43,26 @@ impl OwnedAtom for RecordAtom {
 
 	async fn val(&self) -> Cow<'_, Self::Data> { Cow::Owned(()) }
 }
-impl Supports<GetTagIdMethod> for RecordAtom {
-	async fn handle(&self, _: GetTagIdMethod) -> <GetTagIdMethod as Request>::Response {
-		sym!(std::record::Record).to_api()
-	}
-}
-impl Supports<GetImplMethod> for RecordAtom {
-	async fn handle(&self, req: GetImplMethod) -> <GetImplMethod as Request>::Response {
-		let name = Sym::from_api(req.0).await;
+impl Supports<ProtocolMethod> for RecordAtom {
+	async fn handle<'a>(
+		&self,
+		hand: Box<dyn ReqHandle<'a> + '_>,
+		req: ProtocolMethod,
+	) -> io::Result<Receipt<'a>> {
+		match req {
+			ProtocolMethod::GetTagId(req) => hand.reply(&req, &sym!(std::record::Record).to_api()).await,
+			ProtocolMethod::GetImpl(ref req @ GetImpl(key)) => {
+				let name = Sym::from_api(key).await;
 				let val = if name == sym!(std::ops::get) {
 					sym_ref(sym!(std::record::get))
 				} else if name == sym!(std::ops::set) {
 					sym_ref(sym!(std::record::set))
 				} else {
-			return None;
+					return hand.reply(req, &None).await;
 				};
-		Some(val.create().await.serialize().await)
+				return hand.reply(req, &Some(val.create().await.serialize().await)).await;
+			},
+		}
 	}
 }
 

orchid-std/src/std/reflection/sym_atom.rs

@@ -5,6 +5,7 @@ use orchid_api_traits::Request;
 use orchid_base::error::mk_errv;
 use orchid_base::interner::{es, is};
 use orchid_base::name::{NameLike, Sym};
+use orchid_base::reqnot::ReqHandleExt;
 use orchid_extension::atom::{Atomic, Supports, TAtom};
 use orchid_extension::atom_owned::{OwnedAtom, OwnedVariant, own};
 use orchid_extension::expr::{Expr, ExprHandle};
@@ -30,8 +31,12 @@ impl OwnedAtom for SymAtom {
 	async fn val(&self) -> Cow<'_, Self::Data> { Cow::Owned(SymAtomData(self.0.tok().to_api())) }
 }
 impl Supports<ToStringMethod> for SymAtom {
-	async fn handle(&self, _: ToStringMethod) -> <ToStringMethod as Request>::Response {
-		self.0.to_string()
+	async fn handle<'a>(
+		&self,
+		hand: Box<dyn orchid_base::reqnot::ReqHandle<'a> + '_>,
+		req: ToStringMethod,
+	) -> std::io::Result<orchid_base::reqnot::Receipt<'a>> {
+		hand.reply(&req, &self.0.to_string()).await
 	}
 }
 

orchid-std/src/std/string/str_atom.rs

@@ -1,15 +1,17 @@
 use std::borrow::Cow;
+use std::io;
 use std::ops::Deref;
 use std::pin::Pin;
 use std::rc::Rc;
 
 use futures::AsyncWrite;
-use orchid_api_derive::Coding;
+use orchid_api_derive::{Coding, Hierarchy};
 use orchid_api_traits::{Encode, Request};
 use orchid_base::error::{OrcRes, mk_errv};
 use orchid_base::format::{FmtCtx, FmtUnit};
 use orchid_base::interner::{IStr, es, is};
 use orchid_base::name::Sym;
+use orchid_base::reqnot::{Receipt, ReqHandle, ReqHandleExt};
 use orchid_base::sym;
 use orchid_extension::atom::{AtomMethod, Atomic, MethodSetBuilder, Supports, TAtom};
 use orchid_extension::atom_owned::{DeserializeCtx, OwnedAtom, OwnedVariant};
@@ -17,10 +19,10 @@ use orchid_extension::conv::TryFromExpr;
 use orchid_extension::expr::Expr;
 use orchid_extension::gen_expr::sym_ref;
 
-use crate::std::protocol::types::{GetImplMethod, GetTagIdMethod};
+use crate::std::protocol::types::{GetImpl, ProtocolMethod};
 use crate::std::string::to_string::ToStringMethod;
 
-#[derive(Copy, Clone, Debug, Coding)]
+#[derive(Copy, Clone, Debug, Coding, Hierarchy)]
 pub struct StringGetValMethod;
 impl Request for StringGetValMethod {
 	type Response = Rc<String>;
@@ -38,8 +40,7 @@ impl Atomic for StrAtom {
 		MethodSetBuilder::new()
 			.handle::<StringGetValMethod>()
 			.handle::<ToStringMethod>()
-			.handle::<GetTagIdMethod>()
-			.handle::<GetImplMethod>()
+			.handle::<ProtocolMethod>()
 	}
 }
 impl StrAtom {
@@ -63,29 +64,41 @@ impl OwnedAtom for StrAtom {
 	}
 }
 impl Supports<StringGetValMethod> for StrAtom {
-	async fn handle(&self, _: StringGetValMethod) -> <StringGetValMethod as Request>::Response {
-		self.0.clone()
+	async fn handle<'a>(
+		&self,
+		hand: Box<dyn ReqHandle<'a> + '_>,
+		req: StringGetValMethod,
+	) -> io::Result<Receipt<'a>> {
+		hand.reply(&req, &self.0).await
 	}
 }
 impl Supports<ToStringMethod> for StrAtom {
-	async fn handle(&self, _: ToStringMethod) -> <ToStringMethod as Request>::Response {
-		self.0.as_str().to_string()
+	async fn handle<'a>(
+		&self,
+		hand: Box<dyn ReqHandle<'a> + '_>,
+		req: ToStringMethod,
+	) -> io::Result<Receipt<'a>> {
+		hand.reply(&req, &self.0).await
 	}
 }
-impl Supports<GetTagIdMethod> for StrAtom {
-	async fn handle(&self, _: GetTagIdMethod) -> <GetTagIdMethod as Request>::Response {
-		sym!(std::string::StrAtom).to_api()
-	}
-}
-impl Supports<GetImplMethod> for StrAtom {
-	async fn handle(&self, req: GetImplMethod) -> <GetImplMethod as Request>::Response {
-		let name = Sym::from_api(req.0).await;
+impl Supports<ProtocolMethod> for StrAtom {
+	async fn handle<'a>(
+		&self,
+		hand: Box<dyn ReqHandle<'a> + '_>,
+		req: ProtocolMethod,
+	) -> io::Result<Receipt<'a>> {
+		match req {
+			ProtocolMethod::GetTagId(req) => hand.reply(&req, &sym!(std::string::StrAtom).to_api()).await,
+			ProtocolMethod::GetImpl(ref req @ GetImpl(key)) => {
+				let name = Sym::from_api(key).await;
 				let val = if name == sym!(std::ops::add) {
 					sym_ref(sym!(std::string::concat))
 				} else {
-			return None;
+					return hand.reply(req, &None).await;
 				};
-		Some(val.create().await.serialize().await)
+				hand.reply(req, &Some(val.create().await.serialize().await)).await
+			},
+		}
 	}
 }
 
@@ -95,10 +108,7 @@ impl Atomic for IntStrAtom {
 	type Variant = OwnedVariant;
 	type Data = orchid_api::TStr;
 	fn reg_reqs() -> MethodSetBuilder<Self> {
-		MethodSetBuilder::new()
-			.handle::<GetTagIdMethod>()
-			.handle::<GetImplMethod>()
-			.handle::<ToStringMethod>()
+		MethodSetBuilder::new().handle::<ProtocolMethod>().handle::<ToStringMethod>()
 	}
 }
 impl From<IStr> for IntStrAtom {
@@ -124,27 +134,35 @@ impl TryFromExpr for IntStrAtom {
 	}
 }
 impl Supports<ToStringMethod> for IntStrAtom {
-	async fn handle(&self, _: ToStringMethod) -> <ToStringMethod as Request>::Response {
-		self.0.to_string()
+	async fn handle<'a>(
+		&self,
+		hand: Box<dyn ReqHandle<'a> + '_>,
+		req: ToStringMethod,
+	) -> io::Result<Receipt<'a>> {
+		hand.reply(&req, &self.0.rc()).await
 	}
 }
-impl Supports<GetTagIdMethod> for IntStrAtom {
-	async fn handle(&self, _: GetTagIdMethod) -> <GetTagIdMethod as Request>::Response {
-		sym!(std::string::IntStrAtom).to_api()
-	}
-}
-impl Supports<GetImplMethod> for IntStrAtom {
-	async fn handle(&self, req: GetImplMethod) -> <GetImplMethod as Request>::Response {
-		let name = Sym::from_api(req.0).await;
+impl Supports<ProtocolMethod> for IntStrAtom {
+	async fn handle<'a>(
+		&self,
+		hand: Box<dyn ReqHandle<'a> + '_>,
+		req: ProtocolMethod,
+	) -> io::Result<Receipt<'a>> {
+		match req {
+			ProtocolMethod::GetTagId(req) =>
+				hand.reply(&req, &sym!(std::string::IntStrAtom).to_api()).await,
+			ProtocolMethod::GetImpl(ref req @ GetImpl(key)) => {
+				let name = Sym::from_api(key).await;
 				let val = if name == sym!(std::ops::add) {
 					sym_ref(sym!(std::string::concat))
 				} else {
-			return None;
+					return hand.reply(req, &None).await;
 				};
-		Some(val.create().await.serialize().await)
+				hand.reply(req, &Some(val.create().await.serialize().await)).await
+			},
+		}
 	}
 }
-
 #[derive(Clone)]
 pub struct OrcString {
 	kind: OrcStringKind,

orchid-std/src/std/string/to_string.rs

@@ -1,9 +1,9 @@
-use orchid_api_derive::Coding;
+use orchid_api_derive::{Coding, Hierarchy};
 use orchid_api_traits::Request;
 use orchid_extension::atom::AtomMethod;
 
 /// Method version of std::string::to_string protocol for atoms
-#[derive(Coding, Clone, Debug)]
+#[derive(Coding, Clone, Debug, Hierarchy)]
 pub struct ToStringMethod;
 impl Request for ToStringMethod {
 	type Response = String;

orchid-std/src/std/tuple.rs

@@ -12,6 +12,7 @@ use orchid_base::error::{OrcRes, mk_errv};
 use orchid_base::format::{FmtCtx, FmtUnit, Format, Variants};
 use orchid_base::interner::is;
 use orchid_base::name::Sym;
+use orchid_base::reqnot::ReqHandleExt;
 use orchid_base::sym;
 use orchid_extension::atom::{Atomic, MethodSetBuilder, Supports, TAtom};
 use orchid_extension::atom_owned::{DeserializeCtx, OwnedAtom, OwnedVariant, own};
@@ -21,7 +22,7 @@ use orchid_extension::gen_expr::{GExpr, new_atom, sym_ref};
 use orchid_extension::system::sys_req;
 use orchid_extension::tree::{GenMember, cnst, fun, prefix};
 
-use crate::std::protocol::types::{GetImplMethod, GetTagIdMethod};
+use crate::std::protocol::types::{GetImpl, ProtocolMethod};
 use crate::std::std_system::StdReq;
 use crate::{Int, StdSystem, api};
 
@@ -32,7 +33,7 @@ impl Atomic for Tuple {
 	type Data = Vec<api::ExprTicket>;
 	type Variant = OwnedVariant;
 	fn reg_reqs() -> orchid_extension::atom::MethodSetBuilder<Self> {
-		MethodSetBuilder::new().handle::<GetTagIdMethod>().handle::<GetImplMethod>()
+		MethodSetBuilder::new().handle::<ProtocolMethod>()
 	}
 }
 
@@ -52,22 +53,26 @@ impl OwnedAtom for Tuple {
 			.units_own(join_all(self.0.iter().map(|x| x.print(c))).await)
 	}
 }
-impl Supports<GetTagIdMethod> for Tuple {
-	async fn handle(&self, _: GetTagIdMethod) -> <GetTagIdMethod as Request>::Response {
-		sym!(std::tuple).to_api()
-	}
-}
-impl Supports<GetImplMethod> for Tuple {
-	async fn handle(&self, req: GetImplMethod) -> <GetImplMethod as Request>::Response {
-		let name = Sym::from_api(req.0).await;
+impl Supports<ProtocolMethod> for Tuple {
+	async fn handle<'a>(
+		&self,
+		hand: Box<dyn orchid_base::reqnot::ReqHandle<'a> + '_>,
+		req: ProtocolMethod,
+	) -> std::io::Result<orchid_base::reqnot::Receipt<'a>> {
+		match req {
+			ProtocolMethod::GetTagId(req) => hand.reply(&req, &sym!(std::tuple).to_api()).await,
+			ProtocolMethod::GetImpl(ref req @ GetImpl(key)) => {
+				let name = Sym::from_api(key).await;
 				let val = if name == sym!(std::ops::get) {
 					sym_ref(sym!(std::tuple::get))
 				} else if name == sym!(std::ops::set) {
 					sym_ref(sym!(std::tuple::set))
 				} else {
-			return None;
+					return hand.reply(req, &None).await;
 				};
-		Some(val.create().await.serialize().await)
+				hand.reply(req, &Some(val.create().await.serialize().await)).await
+			},
+		}
 	}
 }