convert instruction to an editable format WIP

androscalpel_serializer/src/file_reader.rs

@@ -194,6 +194,16 @@ impl<'a> DexFileReader<'a> {
             )))
     }
 
+    /// Return a [`CallSiteIdItem`] reference from its idx.
+    pub fn get_call_site_id(&self, idx: usize) -> Result<&CallSiteIdItem> {
+        self.call_site_ids
+            .get(idx)
+            .ok_or(Error::InconsistantStruct(format!(
+                "call site {idx} is out of bound (|call_site_ids|={})",
+                self.call_site_ids.len()
+            )))
+    }
+
     fn sanity_check(&self) -> Result<()> {
         if self.header.magic.version != [0x30, 0x33, 0x39] {
             warn!(