feat: error handling

evaluator/nixjit_eval/src/value/primop.rs

@@ -34,24 +34,25 @@ impl PrimOpApp {
     /// arguments.
     pub fn call(
         self: &mut Rc<Self>,
-        args: Vec<Value>,
+        mut args: Vec<Value>,
         ctx: &mut impl EvalContext,
     ) -> Result<Value> {
         if self.arity < args.len() {
-            todo!()
-        }
-        let Some(ret) = ({
-            let self_mut = Rc::make_mut(self);
-            self_mut.arity -= args.len();
-            self_mut.args.extend(args);
-            if self_mut.arity == 0 {
-                Some(ctx.call_primop(self_mut.id, std::mem::take(&mut self_mut.args)))
-            } else {
-                None
+            let leftover = args.split_off(self.arity);
+            for arg in self.args.iter().rev().cloned() {
+                args.insert(0, arg);
             }
-        }) else {
-            return Value::PrimOpApp(self.clone()).ok();
-        };
-        ret
+            let mut ret = ctx.call_primop(self.id, args)?;
+            ret.call(leftover.into_iter().map(Ok), ctx)?;
+            return Ok(ret);
+        }
+        let self_mut = Rc::make_mut(self);
+        self_mut.arity -= args.len();
+        self_mut.args.extend(args);
+        if self_mut.arity == 0 {
+            ctx.call_primop(self_mut.id, std::mem::take(&mut self_mut.args))
+        } else {
+            Ok(Value::PrimOpApp(self.clone()))
+        }
     }
 }