Added support for defining macros in Rust within the macro system

Also fixed a lot of bugs

orchid-api/Cargo.toml

@@ -13,4 +13,4 @@ futures = { version = "0.3.31", features = ["std"], default-features = false }
 itertools = "0.14.0"
 
 [dev-dependencies]
-test_executors = "0.3.2"
+test_executors = "0.3.5"

orchid-api/src/atom.rs

@@ -145,6 +145,16 @@ impl Request for ExtAtomPrint {
 	type Response = FormattingUnit;
 }
 
+/// Can specify the recipient of an atom as well. The main use case for this is
+/// to be able to return an atom to other extensions, so it can be combined with
+/// a [crate::Move].
+#[derive(Clone, Debug, Coding, Hierarchy)]
+#[extends(ExtHostReq)]
+pub struct CreateAtom(pub Atom, pub SysId);
+impl Request for CreateAtom {
+	type Response = ExprTicket;
+}
+
 /// Requests that apply to an existing atom instance
 #[derive(Clone, Debug, Coding, Hierarchy)]
 #[extends(HostExtReq)]

orchid-api/src/proto.rs

@@ -85,6 +85,7 @@ pub enum ExtHostReq {
 	IntReq(interner::IntReq),
 	Fwd(atom::Fwd),
 	ExtAtomPrint(atom::ExtAtomPrint),
+	CreateAtom(atom::CreateAtom),
 	SysFwd(system::SysFwd),
 	ExprReq(expr::ExprReq),
 	SubLex(lexer::SubLex),