data encapsulation fix

precompiles/utils/src/bytes.rs

@@ -107,8 +107,7 @@ impl<K: Kind, S: Get<u32>> EvmData for BoundedBytesString<K, S> {
         let range = inner_reader.move_cursor(array_size)?;
 
         let data = inner_reader
-            .input
-            .get(range)
+            .get_input_from_range(range)
             .ok_or_else(|| revert(K::signature()))?;
 
         let bytes = Self {

precompiles/utils/src/data.rs

@@ -87,7 +87,7 @@ impl From<Bytes> for Vec<u8> {
 /// Provide functions to parse common types.
 #[derive(Clone, Copy, Debug)]
 pub struct EvmDataReader<'a> {
-    pub(crate) input: &'a [u8],
+    input: &'a [u8],
     cursor: usize,
 }
 
@@ -175,6 +175,11 @@ impl<'a> EvmDataReader<'a> {
         })
     }
 
+    /// Return Option<&[u8]> from a given range for EvmDataReader
+    pub fn get_input_from_range(&self, range: Range<usize>) -> Option<&[u8]> {
+        self.input.get(range)
+    }
+
     /// Read remaining bytes
     pub fn read_till_end(&mut self) -> EvmResult<&[u8]> {
         let range = self.move_cursor(self.input.len() - self.cursor)?;