wip: trait EdnCommand

input/Cargo.toml

@@ -4,3 +4,4 @@ edition = "2021"
 version = "0.2.0"
 
 [dependencies]
+tek_edn = { path = "../edn" }

input/src/edn_cmd.rs

@@ -0,0 +1,30 @@
+use crate::*;
+use std::marker::PhantomData;
+
+pub trait EdnControlData<E: Input> {}
+
+/// Renders from EDN source and context.
+#[derive(Default)]
+pub enum EdnControls<E: Input, T: EdnControlData<E>> {
+    #[default]
+    Inert,
+    _Unused(PhantomData<E>),
+    Ok(T, EdnItem<String>),
+    Err(String)
+}
+
+impl<E: Input, T: EdnControlData<E>> EdnControls<E, T> {
+    pub fn from_source (state: T, source: &str) -> Self {
+        match EdnItem::read_one(&source) {
+            Ok((layout, _)) => Self::Ok(state, layout),
+            Err(error) => Self::Err(format!("{error}"))
+        }
+    }
+    pub fn from_items (state: T, items: &[EdnItem<&str>]) -> Self {
+        Self::Ok(state, EdnItem::Exp(items.iter().map(|i|(*i).clone()).collect()))
+    }
+}
+
+pub trait EdnCommand<C>: Command<C> {
+    fn from_edn <'a> (state: &C, head: &EdnItem<&str>, tail: &'a [EdnItem<String>]) -> Self;
+}

input/src/lib.rs

@@ -5,7 +5,9 @@ mod input;     pub use self::input::*;
 mod handle;    pub use self::handle::*;
 mod command;   pub use self::command::*;
 mod event_map; pub use self::event_map::*;
+mod edn_cmd;   pub use self::edn_cmd::*;
 
+pub(crate) use ::tek_edn::EdnItem;
 /// Standard error trait.
 pub(crate) use std::error::Error;
 /// Standard result type.