continue subsystem helper

satrs/src/subsystem.rs

@@ -21,6 +21,16 @@ pub struct SequenceExecutionHelper {
     current_sequence_index: Option<usize>,
 }
 
+impl Default for SequenceExecutionHelper {
+    fn default() -> Self {
+        Self {
+            target_mode: 0,
+            state: SequenceExecutionHelperStates::Idle,
+            request_id: 0,
+            current_sequence_index: todo!(),
+        }
+    }
+}
 pub trait CheckSuccessProvider {
     fn mode_request_requires_success_check(
         &mut self,
@@ -37,20 +47,19 @@ pub enum SequenceHandlerResult {
 }
 
 impl SequenceExecutionHelper {
-    pub fn new(
+    pub fn load(
+        &mut self,
         mode: Mode,
         request_id: RequestId,
         sequence_tables: &SequenceModeTables,
-    ) -> Option<Self> {
+    ) -> Result<(), ()> {
         if !sequence_tables.0.contains_key(&mode) {
-            return None;
+            return Err(());
         }
-        Some(Self {
-            target_mode: mode,
-            state: SequenceExecutionHelperStates::Idle,
-            request_id,
-            current_sequence_index: None,
-        })
+        self.target_mode = mode;
+        self.request_id = request_id;
+        self.current_sequence_index = None;
+        Ok(())
     }
 
     pub fn confirm_sequence_done(&mut self) {

satrs/tests/mode_tree.rs

@@ -13,6 +13,7 @@ use satrs::mode_tree::{
     TargetTablesMapValue,
 };
 use satrs::request::MessageMetadata;
+use satrs::subsystem::SequenceExecutionHelper;
 use satrs::{
     mode::{ModeAndSubmode, ModeReply, ModeRequest},
     queue::GenericTargetedMessagingError,
@@ -62,8 +63,22 @@ pub struct SubsystemHelper {
     pub children_mode_store: ModeStoreVec,
     pub target_tables: TargetModeTables,
     pub sequence_tables: SequenceModeTables,
+    pub helper: SequenceExecutionHelper,
 }
 impl SubsystemHelper {
+    pub fn new(
+        children_mode_store: ModeStoreVec,
+        target_tables: TargetModeTables,
+        sequence_tables: SequenceModeTables,
+    ) -> Self{
+        Self {
+            children_mode_store,
+            target_tables,
+            sequence_tables,
+            helper: Default::default(),
+        }
+    }
+
     pub fn add_target_and_sequence_table(
         &mut self,
         mode: Mode,