Fit for newest Rust nightly. BitSet -> BitVec.

.travis.yml

@@ -1,3 +1,3 @@
 language: rust
 rust:
-  - nightly-2018-04-01
+  - nightly

Cargo.toml

@@ -4,7 +4,7 @@ version = "0.0.1"
 authors = ["WangRunji <wangrunji0408@163.com>"]
 
 [dependencies]
-bit-set = { default-features = false, version = "0.5" } # default-features contains 'std'
+bit-vec = { default-features = false, git = "https://github.com/AltSysrq/bit-vec.git" } # default-features contains 'std'
 static_assertions = "0.2.5"
 
 [features]

src/lib.rs

@@ -8,7 +8,7 @@
 extern crate std;
 #[macro_use]
 extern crate alloc;
-extern crate bit_set;
+extern crate bit_vec;
 #[macro_use]
 extern crate static_assertions;
 

src/sfs.rs

@@ -1,5 +1,5 @@
-use bit_set::BitSet;
-use alloc::{boxed::Box, Vec, BTreeMap, rc::{Rc, Weak}, String};
+use bit_vec::BitVec;
+use alloc::{boxed::Box, vec::Vec, collections::BTreeMap, rc::{Rc, Weak}, string::String};
 use core::cell::{RefCell, RefMut};
 use core::mem::{uninitialized, size_of};
 use core::slice;
@@ -331,7 +331,7 @@ pub struct SimpleFileSystem {
     /// on-disk superblock
     super_block: RefCell<Dirty<SuperBlock>>,
     /// blocks in use are mared 0
-    free_map: RefCell<Dirty<BitSet>>,
+    free_map: RefCell<Dirty<BitVec>>,
     /// inode list
     inodes: RefCell<BTreeMap<INodeId, Ptr<INode>>>,
     /// device
@@ -351,7 +351,7 @@ impl SimpleFileSystem {
 
         Some(SimpleFileSystem {
             super_block: RefCell::new(Dirty::new(super_block)),
-            free_map: RefCell::new(Dirty::new(BitSet::from_bytes(&free_map))),
+            free_map: RefCell::new(Dirty::new(BitVec::from_bytes(&free_map))),
             inodes: RefCell::new(BTreeMap::<INodeId, Ptr<INode>>::new()),
             device: RefCell::new(device),
             self_ptr: Weak::default(),
@@ -369,9 +369,9 @@ impl SimpleFileSystem {
             info: Str32::from("simple file system"),
         };
         let free_map = {
-            let mut bitset = BitSet::with_capacity(BLKBITS);
+            let mut bitset = BitVec::from_elem(BLKBITS, false);
             for i in 3..blocks {
-                bitset.insert(i);
+                bitset.set(i, true);
             }
             bitset
         };
@@ -417,8 +417,8 @@ impl SimpleFileSystem {
     /// Free a block
     fn free_block(&self, block_id: usize) {
         let mut free_map = self.free_map.borrow_mut();
-        assert!(!free_map.contains(block_id));
-        free_map.insert(block_id);
+        assert!(!free_map[block_id]);
+        free_map.set(block_id, true);
         self.super_block.borrow_mut().unused_blocks += 1;
     }
 
@@ -436,7 +436,7 @@ impl SimpleFileSystem {
     /// Get inode by id. Load if not in memory.
     /// ** Must ensure it's a valid INode **
     fn get_inode(&self, id: INodeId) -> Ptr<INode> {
-        assert!(!self.free_map.borrow().contains(id));
+        assert!(!self.free_map.borrow()[id]);
 
         // Load if not in memory.
         if !self.inodes.borrow().contains_key(&id) {
@@ -510,24 +510,24 @@ trait BitsetAlloc {
     fn alloc(&mut self) -> Option<usize>;
 }
 
-impl BitsetAlloc for BitSet {
+impl BitsetAlloc for BitVec {
     fn alloc(&mut self) -> Option<usize> {
         // TODO: more efficient
-        let id = (0..self.len()).find(|&i| self.contains(i));
+        let id = (0..self.len()).find(|&i| self[i]);
         if let Some(id) = id {
-            self.remove(id);
+            self.set(id, false);
         }
         id
     }
 }
 
-impl AsBuf for BitSet {
+impl AsBuf for BitVec {
     fn as_buf(&self) -> &[u8] {
-        let slice = self.get_ref().storage();
+        let slice = self.storage();
         unsafe { slice::from_raw_parts(slice as *const _ as *const u8, slice.len() * 4) }
     }
     fn as_buf_mut(&mut self) -> &mut [u8] {
-        let slice = self.get_ref().storage();
+        let slice = self.storage();
         unsafe { slice::from_raw_parts_mut(slice as *const _ as *mut u8, slice.len() * 4) }
     }
 }

src/vfs.rs

@@ -1,4 +1,4 @@
-use alloc::{Vec, String, rc::{Rc, Weak}};
+use alloc::{vec::Vec, string::String, rc::{Rc, Weak}};
 use core::cell::RefCell;
 use core::mem::size_of;
 use core;