chore: Using a fork of the fst library that support Arc<[u8]>

meilidb-core/src/data/shared_data.rs

@@ -1,9 +1,9 @@
 use std::sync::Arc;
 use std::ops::Deref;
 
-#[derive(Default, Clone)]
+#[derive(Clone)]
 pub struct SharedData {
-    pub bytes: Arc<Vec<u8>>,
+    pub bytes: Arc<[u8]>,
     pub offset: usize,
     pub len: usize,
 }
@@ -15,7 +15,7 @@ impl SharedData {
         SharedData::new(bytes, 0, len)
     }
 
-    pub fn new(bytes: Arc<Vec<u8>>, offset: usize, len: usize) -> SharedData {
+    pub fn new(bytes: Arc<[u8]>, offset: usize, len: usize) -> SharedData {
         SharedData { bytes, offset, len }
     }
 
@@ -33,6 +33,16 @@ impl SharedData {
     }
 }
 
+impl Default for SharedData {
+    fn default() -> SharedData {
+        SharedData {
+            bytes: Arc::from(Vec::new()),
+            offset: 0,
+            len: 0,
+        }
+    }
+}
+
 impl Deref for SharedData {
     type Target = [u8];
 

meilidb-core/src/shared_data_cursor.rs

@@ -7,12 +7,12 @@ pub struct SharedDataCursor(Cursor<SharedData>);
 impl SharedDataCursor {
     pub fn from_bytes(bytes: Vec<u8>) -> SharedDataCursor {
         let len = bytes.len();
-        let bytes = Arc::new(bytes);
+        let bytes = Arc::from(bytes);
 
         SharedDataCursor::from_shared_bytes(bytes, 0, len)
     }
 
-    pub fn from_shared_bytes(bytes: Arc<Vec<u8>>, offset: usize, len: usize) -> SharedDataCursor {
+    pub fn from_shared_bytes(bytes: Arc<[u8]>, offset: usize, len: usize) -> SharedDataCursor {
         let data = SharedData::new(bytes, offset, len);
         let cursor = Cursor::new(data);