wip: separate PhrasePlayer vs PhraseEditor

crates/tek_sequencer/src/arranger_edn.rs

@@ -0,0 +1,27 @@
+use crate::*;
+
+impl Scene {
+    pub fn from_edn <'a, 'e> (args: &[Edn<'e>]) -> Usually<Self> {
+        let mut name  = None;
+        let mut clips = vec![];
+        edn!(edn in args {
+            Edn::Map(map) => {
+                let key = map.get(&Edn::Key(":name"));
+                if let Some(Edn::Str(n)) = key {
+                    name = Some(*n);
+                } else {
+                    panic!("unexpected key in scene '{name:?}': {key:?}")
+                }
+            },
+            Edn::Symbol("_") => {
+                clips.push(None);
+            },
+            Edn::Int(i) => {
+                clips.push(Some(*i as usize));
+            },
+            _ => panic!("unexpected in scene '{name:?}': {edn:?}")
+        });
+        let scene = Self::new(name.unwrap_or(""), clips);
+        Ok(scene)
+    }
+}