1 files changed, 29 insertions, 0 deletions
diff --git a/src/actor.rs b/src/actor.rs
new file mode 100644
index 0000000..3b03fa6
--- /dev/null
+++ b/src/actor.rs
@@ -0,0 +1,29 @@
+use crate::number::Number;
+
+#[derive(Clone)]
+pub enum Type {
+    String,
+    Record {
+        name: String,
+        fields: Vec<Slot>
+    },
+    AnyNumber,
+    NumberInRange {
+        min: Option<Number>,
+        max: Option<Number>,
+    },
+    List {
+        contents: Box<Type>,
+    },
+}
+
+#[derive(Clone)]
+pub struct Slot {
+    pub name: String,
+    pub r#type: Type,
+}
+
+pub trait Actorful {
+    fn inputs() -> Vec<Slot>;
+    fn outputs() -> Vec<Slot>;
+}