Enable dynamic access to the file access interface.

src/context/file_access_interface.rs

@@ -1,13 +1,15 @@
+use std::fmt::Debug;
 use std::path::Path;
 
-pub trait FileAccessInterface {
-    fn read_file<P: AsRef<Path>>(&self, path: P) -> Result<String, Box<dyn std::error::Error>>;
+pub trait FileAccessInterface: Debug {
+    fn read_file(&self, path: &dyn AsRef<Path>) -> Result<String, Box<dyn std::error::Error>>;
 }
 
+#[derive(Debug, Clone)]
 pub struct LocalFileAccessInterface;
 
 impl FileAccessInterface for LocalFileAccessInterface {
-    fn read_file<P: AsRef<Path>>(&self, path: P) -> Result<String, Box<dyn std::error::Error>> {
+    fn read_file(&self, path: &dyn AsRef<Path>) -> Result<String, Box<dyn std::error::Error>> {
         Ok(std::fs::read_to_string(path)?)
     }
 }