fix: remove duplication of code to load stdlib files

compiler/fm/src/file_reader.rs

@@ -21,8 +21,30 @@
     path.starts_with("std/")
 }
 
+fn get_stdlib_asset(path: &Path) -> std::io::Result<String> {
+    if !is_stdlib_asset(path) {
+        return Err(Error::new(ErrorKind::InvalidInput, "requested a non-stdlib asset"));
+    }
+
+    match StdLibAssets::get(path.to_str().unwrap()) {
+        Some(std_lib_asset) => {
+            Ok(std::str::from_utf8(std_lib_asset.data.as_ref()).unwrap().to_string())
+        }
+
+        None => Err(Error::new(ErrorKind::NotFound, "invalid stdlib path")),
+    }
+}
+
+pub(crate) fn read_file_to_string(path_to_file: &Path) -> std::io::Result<String> {
+    if is_stdlib_asset(path_to_file) {
+        get_stdlib_asset(path_to_file)
+    } else {
+        get_non_stdlib_asset(path_to_file)
+    }
+}
+
 cfg_if::cfg_if! {
     if #[cfg(all(target_arch = "wasm32", not(target_os = "wasi")))] {
         use wasm_bindgen::{prelude::*, JsValue};
 
         #[wasm_bindgen(module = "@noir-lang/source-resolver")]
@@ -33,42 +55,17 @@
 
         }
 
-        pub(crate) fn read_file_to_string(path_to_file: &Path) -> Result<String, Error> {
+        fn get_non_stdlib_asset(path_to_file: &Path) -> std::io::Result<String> {
             let path_str = path_to_file.to_str().unwrap();
-            match StdLibAssets::get(path_str) {
-
-                Some(std_lib_asset) => {
-                    Ok(std::str::from_utf8(std_lib_asset.data.as_ref()).unwrap().to_string())
-                },
-
-                None if is_stdlib_asset(path_to_file) => {
-                    Err(Error::new(ErrorKind::NotFound, "invalid stdlib path"))
-                }
-
-                None => match read_file(path_str) {
-                    Ok(buffer) => Ok(buffer),
-                    Err(_) => Err(Error::new(ErrorKind::Other, "could not read file using wasm")),
-                }
-
+            match read_file(path_str) {
+                Ok(buffer) => Ok(buffer),
+                Err(_) => Err(Error::new(ErrorKind::Other, "could not read file using wasm")),
             }
         }
     } else {
 
-        pub(crate) fn read_file_to_string(path_to_file: &Path) -> Result<String, Error> {
-
-            match StdLibAssets::get(path_to_file.to_str().unwrap()) {
-
-                Some(std_lib_asset) => {
-                    Ok(std::str::from_utf8(std_lib_asset.data.as_ref()).unwrap().to_string())
-                },
-
-                None if is_stdlib_asset(path_to_file) => {
-                    Err(Error::new(ErrorKind::NotFound, "invalid stdlib path"))
-                }
-
-                None => std::fs::read_to_string(path_to_file)
-
-            }
+        fn get_non_stdlib_asset(path_to_file: &Path) -> std::io::Result<String> {
+            std::fs::read_to_string(path_to_file)
         }
     }
 }