Add deep access

Signed-off-by: Marcel Müller <neikos@neikos.email>

src/eval/mod.rs

@@ -119,7 +119,7 @@ pub fn execute(
                 } else if matches!(value, NomoValue::Undefined) {
                     String::new()
                 } else {
-                    panic!("Unknown variable");
+                    panic!("Could not print out value {value:?}");
                 };
 
                 output.push_str(&value);
@@ -243,6 +243,46 @@ pub fn execute(
 
                 scopes.insert_into_slot(*slot, value);
             }
+            Instruction::LoadFromSlotToSlot { from_slot, to_slot } => {
+                let value = scopes.get(from_slot);
+                scopes.insert_into_slot(*to_slot, value.clone());
+            }
+            Instruction::JumpIfUndefined { slot, jump } => {
+                let is_undefined = matches!(scopes.get(slot), NomoValue::Undefined);
+                if is_undefined {
+                    let Some(new_ip) = vm.labels.get(jump) else {
+                        return Err(EvaluationError::LabelNotFound);
+                    };
+
+                    ip = *new_ip;
+                    continue;
+                }
+            }
+            Instruction::IndexSlotToSlot {
+                name,
+                from_slot,
+                to_slot,
+                fail_on_not_found,
+            } => {
+                let value = scopes.get(from_slot);
+
+                match value {
+                    NomoValue::Object { value } => {
+                        let value = value.get(name.as_str());
+
+                        let value = if let Some(value) = value {
+                            value.clone()
+                        } else if *fail_on_not_found {
+                            panic!("Could not index");
+                        } else {
+                            NomoValue::Undefined
+                        };
+
+                        scopes.insert_into_slot(dbg!(*to_slot), dbg!(value));
+                    }
+                    _ => panic!("Invalid indexing"),
+                }
+            }
         }
 
         ip += 1;