Add suspended and ST data helpers

crates/fidc-core/src/data.rs

@@ -947,6 +947,18 @@ impl DataSet {
         self.calendar.next_trading_date(date, n)
     }
 
+    pub fn is_suspended_flags(&self, date: NaiveDate, symbol: &str, count: usize) -> Vec<bool> {
+        self.historical_daily_flags(date, symbol, count, |candidate, market| {
+            candidate.is_some_and(|row| row.is_paused) || market.is_some_and(|row| row.paused)
+        })
+    }
+
+    pub fn is_st_stock_flags(&self, date: NaiveDate, symbol: &str, count: usize) -> Vec<bool> {
+        self.historical_daily_flags(date, symbol, count, |candidate, _| {
+            candidate.is_some_and(|row| row.is_st)
+        })
+    }
+
     pub fn price(&self, date: NaiveDate, symbol: &str, field: PriceField) -> Option<f64> {
         let snapshot = self.market(date, symbol)?;
         Some(snapshot.price(field))
@@ -1047,6 +1059,36 @@ impl DataSet {
             .collect()
     }
 
+    fn historical_daily_flags<F>(
+        &self,
+        date: NaiveDate,
+        symbol: &str,
+        count: usize,
+        evaluator: F,
+    ) -> Vec<bool>
+    where
+        F: Fn(Option<&CandidateEligibility>, Option<&DailyMarketSnapshot>) -> bool,
+    {
+        if count == 0 {
+            return Vec::new();
+        }
+        let days = self
+            .calendar
+            .iter()
+            .filter(|day| *day <= date)
+            .collect::<Vec<_>>();
+        let start = days.len().saturating_sub(count);
+        days[start..]
+            .iter()
+            .map(|day| {
+                evaluator(
+                    self.candidate_index.get(&(*day, symbol.to_string())),
+                    self.market_index.get(&(*day, symbol.to_string())),
+                )
+            })
+            .collect()
+    }
+
     pub fn market_decision_close(&self, date: NaiveDate, symbol: &str) -> Option<f64> {
         self.market_series_by_symbol
             .get(symbol)

crates/fidc-core/src/strategy.rs

@@ -285,6 +285,16 @@ impl StrategyContext<'_> {
         self.data.next_trading_date(date, n)
     }
 
+    pub fn is_suspended(&self, symbol: &str, count: usize) -> Vec<bool> {
+        self.data
+            .is_suspended_flags(self.execution_date, symbol, count)
+    }
+
+    pub fn is_st_stock(&self, symbol: &str, count: usize) -> Vec<bool> {
+        self.data
+            .is_st_stock_flags(self.execution_date, symbol, count)
+    }
+
     pub fn has_subscriptions(&self) -> bool {
         !self.subscriptions.is_empty()
     }

crates/fidc-core/src/strategy_ai.rs

@@ -199,6 +199,7 @@ pub fn built_in_strategy_manual() -> StrategyAiManual {
             ManualFunction { name: "current_snapshot".to_string(), signature: "ctx.current_snapshot(symbol)".to_string(), detail: "读取当前交易日指定证券的日级快照，可用于获得当日 open/close/last/upper_limit/lower_limit 等字段。".to_string() },
             ManualFunction { name: "instrument/instruments/all_instruments".to_string(), signature: "ctx.instrument(symbol)".to_string(), detail: "读取证券元数据，包括名称、板块、上市日期、退市日期、最小下单量、整手、最小价位等；all_instruments 按证券代码稳定排序返回全量证券。".to_string() },
             ManualFunction { name: "get_trading_dates/get_previous_trading_date/get_next_trading_date".to_string(), signature: "ctx.get_previous_trading_date(date, n)".to_string(), detail: "交易日历 API。get_trading_dates 返回闭区间交易日；previous/next 返回相对某日向前或向后的第 n 个交易日，当前日自身不计入。".to_string() },
+            ManualFunction { name: "is_suspended/is_st_stock".to_string(), signature: "ctx.is_suspended(symbol, count)".to_string(), detail: "读取指定证券截至当前交易日最近 count 个交易日的停牌或 ST 标记，返回 bool 序列，顺序从旧到新；对应 RQAlpha 的 is_suspended/is_st_stock 数据源能力。".to_string() },
             ManualFunction { name: "rolling_mean".to_string(), signature: "rolling_mean(\"field\", lookback)".to_string(), detail: "任意字段滚动均值，支持 volume/amount/turnover_ratio、signal_open/signal_close、benchmark_open/benchmark_close 等。任意成交量窗口推荐用它，比如 rolling_mean(\"volume\", 15)。".to_string() },
             ManualFunction { name: "sma".to_string(), signature: "sma(\"field\", lookback)".to_string(), detail: "rolling_mean 的别名。任意价格均线窗口推荐用它，比如 sma(\"close\", 15)。".to_string() },
             ManualFunction { name: "round/floor/ceil/abs/min/max/clamp".to_string(), signature: "round(x)".to_string(), detail: "常用数值函数。".to_string() },

crates/fidc-core/tests/engine_hooks.rs

@@ -20,6 +20,14 @@ fn dt(year: i32, month: u32, day: u32, hour: u32, minute: u32, second: u32) -> N
         .expect("valid datetime")
 }
 
+fn bool_flags(values: Vec<bool>) -> String {
+    values
+        .into_iter()
+        .map(|value| if value { "1" } else { "0" })
+        .collect::<Vec<_>>()
+        .join(",")
+}
+
 struct HookProbeStrategy {
     log: Rc<RefCell<Vec<String>>>,
 }
@@ -420,8 +428,10 @@ impl Strategy for DataApiProbeStrategy {
             let trading_date_count = ctx
                 .get_trading_dates(d(2025, 1, 2), ctx.execution_date)
                 .len();
+            let suspended = bool_flags(ctx.is_suspended("000001.SZ", 3));
+            let st_flags = bool_flags(ctx.is_st_stock("000001.SZ", 3));
             self.snapshots.borrow_mut().push(format!(
-                "daily={daily_close};previous={previous_close};tick={tick_last};previous_tick={previous_tick_last};current={current_close};instrument={instrument_name};all={};range={trading_date_count};prev={prev_date};next={next_date}",
+                "daily={daily_close};previous={previous_close};tick={tick_last};previous_tick={previous_tick_last};current={current_close};instrument={instrument_name};all={};range={trading_date_count};prev={prev_date};next={next_date};suspended={suspended};st={st_flags}",
                 ctx.all_instruments().len()
             ));
         }
@@ -935,14 +945,18 @@ fn strategy_context_exposes_rqalpha_style_data_helpers() {
             extra_factors: BTreeMap::new(),
         })
         .collect::<Vec<_>>();
-    let candidates = [date1, date2, date3]
+    let candidates = [
+        (date1, false, false),
+        (date2, true, true),
+        (date3, false, false),
+    ]
     .into_iter()
-        .map(|date| CandidateEligibility {
+    .map(|(date, is_paused, is_st)| CandidateEligibility {
         date,
         symbol: "000001.SZ".to_string(),
-            is_st: false,
+        is_st,
         is_new_listing: false,
-            is_paused: false,
+        is_paused,
         allow_buy: true,
         allow_sell: true,
         is_kcb: false,
@@ -1045,7 +1059,7 @@ fn strategy_context_exposes_rqalpha_style_data_helpers() {
     assert_eq!(
         snapshots.borrow().as_slice(),
         [
-            "daily=10.10,10.20;previous=10.00,10.10;tick=10.15,10.25;previous_tick=10.15;current=10.20;instrument=Anchor;all=1;range=3;prev=2025-01-03;next=2025-01-06"
+            "daily=10.10,10.20;previous=10.00,10.10;tick=10.15,10.25;previous_tick=10.15;current=10.20;instrument=Anchor;all=1;range=3;prev=2025-01-03;next=2025-01-06;suspended=0,1,0;st=0,1,0"
         ]
     );
 }

docs/rqalpha-gap-roadmap.md

@@ -56,6 +56,13 @@ current alignment pass.
 - [x] phase-aware minute/tick history cursor semantics matching the active
       bar or tick callback
 
+### Phase 7: Remaining stock data-source API parity
+
+- [x] `is_suspended`
+- [x] `is_st_stock`
+- [ ] `get_price` style date-range tabular API
+- [ ] `instruments_history`
+
 ## Execution Order
 
 1. Close the explicit order API gap with target-shares / `order_to` parity.
@@ -64,10 +71,11 @@ current alignment pass.
 4. Add dynamic universe APIs.
 5. Add algo-order styles.
 6. Finish position accounting parity.
-7. Continue parity audit for remaining account, order, and data-source APIs.
+7. Continue stock data-source API parity.
+8. Continue parity audit for remaining account and order object APIs.
 
 ## Current Step
 
-Active implementation target: continue parity audit for remaining account,
+Active implementation target: continue stock data-source API parity after
-order, and data-source APIs after the stock strategy API, scheduler, universe,
+covering suspended/ST historical flags; next larger gap is a `get_price` style
-algo-order, position accounting, and core strategy data helpers are covered.
+date-range tabular API and instruments history.