Add BooleanBitfield struct

src/state/active_state.rs

@@ -20,7 +20,7 @@ impl ActiveState {
         Self {
             height: 0,
             randao: Sha256Digest::zero(),
-            ffg_voter_bitfield: Vec::new(),
+            ffg_voter_bitfield: Bitfield::new(),
             recent_attesters: Vec::new(),
             partial_crosslinks: Vec::new(),
             total_skip_count: 0,
@@ -96,11 +96,11 @@ mod tests {
     }
 
     #[test]
-    fn test_serialization() {
+    fn test_rlp_serialization() {
         let a = ActiveState {
             height: 100,
             randao: Sha256Digest::zero(),
-            ffg_voter_bitfield: Vec::new(),
+            ffg_voter_bitfield: Bitfield::new(),
             recent_attesters: Vec::new(),
             partial_crosslinks: Vec::new(),
             total_skip_count: 99,

src/state/aggregate_vote.rs

@@ -14,7 +14,7 @@ impl AggregateVote {
         Self {
             shard_id: 0,
             shard_block_hash: Sha256Digest::zero(),
-            notary_bitfield: Vec::new(),
+            notary_bitfield: Bitfield::new(),
             aggregate_sig: AggregateSignature::new()
         }
     }
@@ -46,11 +46,11 @@ mod tests {
     }
     
     #[test]
-    fn test_serialization() {
+    fn test_rlp_serialization() {
         let a = AggregateVote {
             shard_id: 100,
             shard_block_hash: Sha256Digest::zero(),
-            notary_bitfield: Vec::new(),
+            notary_bitfield: Bitfield::new(),
             aggregate_sig: AggregateSignature::new()
         };
         let e = rlp::encode(&a);

src/state/block.rs

@@ -23,7 +23,7 @@ impl Block {
             parent_hash: parent_hash,
             skip_count: 0,
             randao_reveal: randao_reveal,
-            attestation_bitfield: Vec::new(),
+            attestation_bitfield: Bitfield::new(),
             attestation_aggregate_sig: AggregateSignature::new(),
             shard_aggregate_votes: Vec::new(),
             main_chain_ref: main_chain_ref,
@@ -147,12 +147,12 @@ mod tests {
     }
     
     #[test]
-    fn test_serialization() {
+    fn test_rlp_serialization() {
         let b = Block {
             parent_hash: Sha256Digest::zero(),
             skip_count: 100,
             randao_reveal: Sha256Digest::zero(),
-            attestation_bitfield: Vec::new(),
+            attestation_bitfield: Bitfield::new(),
             attestation_aggregate_sig: AggregateSignature::new(),
             shard_aggregate_votes: Vec::new(),
             main_chain_ref: Sha256Digest::zero(),

src/state/crosslink_record.rs

@@ -40,7 +40,7 @@ mod tests {
     }
 
     #[test]
-    fn test_serialization() {
+    fn test_rlp_serialization() {
         let c = CrosslinkRecord {
             epoch: 100,
             hash: Sha256Digest::zero()

src/state/crystallized_state.rs

@@ -92,7 +92,7 @@ mod tests {
     use super::*;
 
     #[test]
-    fn test_serialization() {
+    fn test_rlp_serialization() {
         let a = CrystallizedState {
             active_validators: Vec::new(),
             queued_validators: Vec::new(),

src/state/partial_crosslink_record.rs

@@ -13,7 +13,7 @@ impl PartialCrosslinkRecord {
         PartialCrosslinkRecord {
             shard_id: shard_id,
             shard_block_hash: shard_block_hash,
-            voter_bitfield: Vec::new()
+            voter_bitfield: Bitfield::new()
         }
     }
 }
@@ -45,11 +45,11 @@ mod tests {
     }
 
     #[test]
-    fn test_serialization() {
+    fn test_rlp_serialization() {
         let p = PartialCrosslinkRecord {
             shard_id: 1,
             shard_block_hash: Sha256Digest::zero(),
-            voter_bitfield: Vec::new()
+            voter_bitfield: Bitfield::new()
         };
         let e = rlp::encode(&p);
         assert_eq!(e.len(), 35);

src/state/recent_proposer_record.rs

@@ -37,7 +37,7 @@ mod tests {
     use super::*;
 
     #[test]
-    fn test_serialization() {
+    fn test_rlp_serialization() {
         let index = 1;
         let randao_commitment = Sha256Digest::zero();
         let balance_delta = 99;

src/state/validator_record.rs

@@ -81,7 +81,7 @@ mod tests {
     }
     
     #[test]
-    fn test_serialization() {
+    fn test_rlp_serialization() {
         let keypair = get_dangerous_test_keypair();
         let v = ValidatorRecord {
             pubkey: keypair.public,