区分股票池退出后重新入场

crates/fidc-core/src/platform_expr_strategy.rs

@@ -653,6 +653,7 @@ pub struct PlatformExprStrategyConfig {
     pub delayed_limit_open_exit_time: Option<NaiveTime>,
     pub release_slot_on_exit_signal: bool,
     pub redistribute_target_weights_after_exit: bool,
+    pub reenter_exited_targets: bool,
     pub explicit_action_stage: PlatformExplicitActionStage,
     pub explicit_action_schedule: Option<PlatformRebalanceSchedule>,
     pub subscription_guard_required: bool,
@@ -729,6 +730,7 @@ impl PlatformExprStrategyConfig {
             delayed_limit_open_exit_time: None,
             release_slot_on_exit_signal: false,
             redistribute_target_weights_after_exit: false,
+            reenter_exited_targets: false,
             explicit_action_stage: PlatformExplicitActionStage::OnDay,
             explicit_action_schedule: None,
             subscription_guard_required: false,
@@ -2436,6 +2438,7 @@ impl PlatformExprStrategy {
         self.position_entry_dates.remove(symbol);
         self.position_holding_days.remove(symbol);
         self.position_holding_days_last_counted.remove(symbol);
+        if !self.config.reenter_exited_targets {
             if let Some(target_order) = &mut self.last_target_order {
                 target_order.retain(|target| target != symbol);
             }
@@ -2443,6 +2446,7 @@ impl PlatformExprStrategy {
                 target_selection.remove(symbol);
             }
         }
+    }
 
     fn max_holding_days_exceeded(&self, symbol: &str) -> Option<i64> {
         let max_days = self.config.max_holding_days.filter(|value| *value > 0)?;
@@ -13863,6 +13867,35 @@ mod tests {
         );
     }
 
+    #[test]
+    fn stock_pool_target_lifecycle_keeps_exits_for_next_day_reentry() {
+        let date = d(2025, 1, 3);
+        let mut config = PlatformExprStrategyConfig::generic();
+        config.reenter_exited_targets = true;
+        let mut strategy = PlatformExprStrategy::new(config);
+        strategy.last_target_order = Some(vec!["KEEP".to_string(), "EXITED".to_string()]);
+        strategy.last_target_selection =
+            Some(BTreeSet::from(["KEEP".to_string(), "EXITED".to_string()]));
+        strategy
+            .position_entry_dates
+            .insert("EXITED".to_string(), date);
+
+        strategy.forget_position_entry_date("EXITED");
+
+        assert_eq!(
+            strategy.last_target_order.as_deref(),
+            Some(["KEEP".to_string(), "EXITED".to_string()].as_slice())
+        );
+        assert!(
+            strategy
+                .last_target_selection
+                .as_ref()
+                .expect("target selection")
+                .contains("EXITED")
+        );
+        assert!(!strategy.position_entry_dates.contains_key("EXITED"));
+    }
+
     fn single_symbol_platform_data(dates: &[NaiveDate], symbol: &str) -> DataSet {
         DataSet::from_components(
             vec![Instrument {

crates/fidc-core/src/platform_strategy_spec.rs

@@ -1022,6 +1022,8 @@ pub struct StrategyExpressionTradingConfig {
     #[serde(default)]
     pub redistribute_target_weights_after_exit: Option<bool>,
     #[serde(default)]
+    pub reenter_exited_targets: Option<bool>,
+    #[serde(default)]
     pub subscription_guard_required: Option<bool>,
     #[serde(default)]
     pub subscriptions: Vec<String>,
@@ -2299,6 +2301,9 @@ pub fn platform_expr_config_from_spec(
             if let Some(enabled) = trading.redistribute_target_weights_after_exit {
                 cfg.redistribute_target_weights_after_exit = enabled;
             }
+            if let Some(enabled) = trading.reenter_exited_targets {
+                cfg.reenter_exited_targets = enabled;
+            }
             if let Some(enabled) = trading.delayed_limit_open_exit {
                 cfg.delayed_limit_open_exit_enabled = enabled;
                 if enabled {
@@ -3490,7 +3495,8 @@ mod tests {
                     "rebalanceExistingPositions": true,
                     "holdUntilExit": true,
                     "releaseSlotOnExitSignal": true,
-                    "redistributeTargetWeightsAfterExit": true
+                    "redistributeTargetWeightsAfterExit": true,
+                    "reenterExitedTargets": true
                 }
             }
         });
@@ -3505,6 +3511,7 @@ mod tests {
         assert!(cfg.hold_until_exit_enabled);
         assert!(cfg.release_slot_on_exit_signal);
         assert!(cfg.redistribute_target_weights_after_exit);
+        assert!(cfg.reenter_exited_targets);
     }
 
     #[test]