Cleanup use statements

Author: Seulgi Kim

core/src/client/error.rs

@@ -14,8 +14,9 @@
 // You should have received a copy of the GNU Affero General Public License
 // along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
-use kvdb;
 use std::fmt::{Display, Error as FmtError, Formatter};
+
+use kvdb;
 use util_error::UtilError;
 
 /// Client configuration errors.

core/src/spec/genesis.rs

@@ -18,7 +18,8 @@ use ccrypto::BLAKE_NULL_RLP;
 use cjson;
 use ckey::Address;
 use primitives::{Bytes, H256, U256};
-use spec::seal::Seal;
+
+use super::seal::Seal;
 
 /// Genesis components.
 pub struct Genesis {

core/src/spec/spec.rs

@@ -17,7 +17,6 @@
 use std::io::Read;
 use std::sync::Arc;
 
-use blockchain::HeaderProvider;
 use ccrypto::{blake256, BLAKE_NULL_RLP};
 use cjson;
 use ckey::Address;
@@ -28,6 +27,8 @@ use primitives::{Bytes, H256, U256};
 use rlp::{Encodable, Rlp, RlpStream};
 use trie::TrieFactory;
 
+use super::super::blockchain::HeaderProvider;
+
 use super::super::codechain_machine::CodeChainMachine;
 use super::super::consensus::{BlakePoW, CodeChainEngine, Cuckoo, NullEngine, Solo, SoloAuthority, Tendermint};
 use super::super::error::{Error, SpecError};

core/src/state/shard_level.rs

@@ -26,12 +26,12 @@ use ctypes::transaction::{
     Transaction,
 };
 use cvm::{decode, execute, ScriptResult, VMConfig};
-use error::Error;
 use primitives::{Bytes, H256, U128};
 use rlp::Encodable;
 use trie::{self, Result as TrieResult, Trie, TrieError, TrieFactory};
 use unexpected::Mismatch;
 
+use super::super::error::Error;
 use super::super::state_db::StateDB;
 use super::cache::Cache;
 use super::traits::{CheckpointId, StateWithCache, StateWithCheckpoint};

core/src/state/shard_state.rs

@@ -16,8 +16,7 @@
 
 use ctypes::transaction::{Outcome as TransactionOutcome, Transaction};
 
-use error::Error;
-
+use super::super::error::Error;
 use super::ShardBackend;
 
 pub trait ShardState<B>

core/src/state/top_level.rs

@@ -43,12 +43,12 @@ use ckey::{Address, Public};
 use ctypes::invoice::Invoice;
 use ctypes::parcel::{Action, ChangeShard, Error as ParcelError, Outcome as ParcelOutcome};
 use ctypes::transaction::{Outcome as TransactionOutcome, Transaction};
-use error::Error;
-use parcel::SignedParcel;
 use primitives::{H256, U256};
 use trie::{Result as TrieResult, Trie, TrieError, TrieFactory};
 use unexpected::Mismatch;
 
+use super::super::error::Error;
+use super::super::parcel::SignedParcel;
 use super::super::state_db::StateDB;
 use super::account::Account;
 use super::asset::{Asset, AssetAddress};

core/src/state/top_state.rs

@@ -15,10 +15,10 @@
 // along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
 use ckey::{Address, Public};
-use error::Error;
 use primitives::{H256, U256};
 use trie;
 
+use super::super::error::Error;
 use super::TopBackend;
 
 pub trait TopState<B>

core/src/tests/helpers.rs

@@ -16,15 +16,15 @@
 
 use std::sync::Arc;
 
-use header::Header;
 use kvdb::KeyValueDB;
-use parcel::SignedParcel;
-use primitives::Bytes;
-use primitives::{H256, U256};
+use primitives::{Bytes, H256, U256};
 use rlp::{self, RlpStream};
-use spec::Spec;
-use state::TopLevelState;
-use state_db::StateDB;
+
+use super::super::header::Header;
+use super::super::parcel::SignedParcel;
+use super::super::spec::Spec;
+use super::super::state::TopLevelState;
+use super::super::state_db::StateDB;
 
 pub fn create_test_block(header: &Header) -> Bytes {
     let mut rlp = RlpStream::new_list(2);

core/src/views/parcel.rs

@@ -16,7 +16,6 @@
 
 use ccrypto::blake256;
 use primitives::{Bytes, H256, U256};
-
 use rlp::Rlp;
 
 /// View onto parcel rlp.