Add get price data helper

crates/fidc-core/src/strategy.rs

@@ -7,7 +7,7 @@ use std::sync::OnceLock;
 use chrono::{Datelike, Duration, NaiveDate, NaiveDateTime, NaiveTime};
 
 use crate::cost::ChinaAShareCostModel;
-use crate::data::{DailyMarketSnapshot, DataSet, IntradayExecutionQuote, PriceField};
+use crate::data::{DailyMarketSnapshot, DataSet, IntradayExecutionQuote, PriceBar, PriceField};
 use crate::engine::BacktestError;
 use crate::events::{OrderSide, ProcessEvent};
 use crate::instrument::Instrument;
@@ -295,6 +295,16 @@ impl StrategyContext<'_> {
             .is_st_stock_flags(self.execution_date, symbol, count)
     }
 
+    pub fn get_price(
+        &self,
+        symbol: &str,
+        start: NaiveDate,
+        end: NaiveDate,
+        frequency: &str,
+    ) -> Vec<PriceBar> {
+        self.data.get_price(symbol, start, end, frequency)
+    }
+
     pub fn has_subscriptions(&self) -> bool {
         !self.subscriptions.is_empty()
     }