csi/reader: Add common methods to access the underlying reader

noodles-csi/CHANGELOG.md

@@ -1,5 +1,11 @@
 # Changelog
 
+## Unreleased
+
+### Added
+
+  * csi/reader: Add common methods to access the underlying reader.
+
 ## 0.35.0 - 2024-05-16
 
 ### Changed

noodles-csi/src/async/reader.rs

@@ -37,6 +37,48 @@ where
         }
     }
 
+    /// Returns a reference to the underlying reader.
+    ///
+    /// # Examples
+    ///
+    /// ```
+    /// use noodles_csi as csi;
+    /// use tokio::io;
+    /// let reader = csi::r#async::Reader::new(io::empty());
+    /// let _inner = reader.get_ref();
+    /// ```
+    pub fn get_ref(&self) -> &bgzf::AsyncReader<R> {
+        &self.inner
+    }
+
+    /// Returns a mutable reference to the underlying reader.
+    ///
+    /// # Examples
+    ///
+    /// ```
+    /// use noodles_csi as csi;
+    /// use tokio::io;
+    /// let mut reader = csi::r#async::Reader::new(io::empty());
+    /// let _inner = reader.get_mut();
+    /// ```
+    pub fn get_mut(&mut self) -> &mut bgzf::AsyncReader<R> {
+        &mut self.inner
+    }
+
+    /// Returns the underlying reader.
+    ///
+    /// # Examples
+    ///
+    /// ```
+    /// use noodles_csi as csi;
+    /// use tokio::io;
+    /// let reader = csi::r#async::Reader::new(io::empty());
+    /// let _inner = reader.into_inner();
+    /// ```
+    pub fn into_inner(self) -> bgzf::AsyncReader<R> {
+        self.inner
+    }
+
     /// Reads the CSI index.
     ///
     /// The position of the stream is expected to be at the beginning.

noodles-csi/src/reader.rs

@@ -14,6 +14,50 @@ pub struct Reader<R> {
     inner: bgzf::Reader<R>,
 }
 
+impl<R> Reader<R> {
+    /// Returns a reference to the underlying reader.
+    ///
+    /// # Examples
+    ///
+    /// ```
+    /// # use std::io;
+    /// use noodles_csi as csi;
+    /// let reader = csi::Reader::new(io::empty());
+    /// let _inner = reader.get_ref();
+    /// ```
+    pub fn get_ref(&self) -> &bgzf::Reader<R> {
+        &self.inner
+    }
+
+    /// Returns a mutable reference to the underlying reader.
+    ///
+    /// # Examples
+    ///
+    /// ```
+    /// # use std::io;
+    /// use noodles_csi as csi;
+    /// let mut reader = csi::Reader::new(io::empty());
+    /// let _inner = reader.get_mut();
+    /// ```
+    pub fn get_mut(&mut self) -> &mut bgzf::Reader<R> {
+        &mut self.inner
+    }
+
+    /// Returns the underlying reader.
+    ///
+    /// # Examples
+    ///
+    /// ```
+    /// # use std::io;
+    /// use noodles_csi as csi;
+    /// let reader = csi::Reader::new(io::empty());
+    /// let _inner = reader.into_inner();
+    /// ```
+    pub fn into_inner(self) -> bgzf::Reader<R> {
+        self.inner
+    }
+}
+
 impl<R> Reader<R>
 where
     R: Read,