ethcore: cleanup after #11531

ethcore/src/client/client.rs

@@ -296,7 +296,7 @@ impl Importer {
 			trace_time!("import_verified_blocks");
 			let start = Instant::now();
 
-			for mut block in blocks {
+			for (block, block_bytes) in blocks {
 				let hash = block.header.hash();
 
 				let is_invalid = invalid_blocks.contains(block.header.parent_hash());
@@ -305,12 +305,6 @@ impl Importer {
 					continue;
 				}
 
-				// --------------------------------------------------------
-				//  NOTE: this will remove the RLP bytes from  the
-				//  `PreverifiedBlock` so be careful not to use the bytes
-				//  anywhere after this, it will be an empty `Vec`.
-				// --------------------------------------------------------
-				let block_bytes = std::mem::take(&mut block.bytes);
 				match self.check_and_lock_block(block, client) {
 					Ok((locked_block, pending)) => {
 						imported_blocks.push(hash);

ethcore/types/src/block.rs

@@ -76,10 +76,11 @@ pub struct PreverifiedBlock {
 	pub transactions: Vec<SignedTransaction>,
 	/// Populated block uncles
 	pub uncles: Vec<Header>,
-	/// Block bytes
-	pub bytes: Bytes,
 }
 
+/// The RLP representation of a block.
+pub type BlockRlpRepresentation = Vec<u8>;
+
 /// Brief info about inserted block.
 #[derive(Clone)]
 pub struct BlockInfo {

ethcore/verification/benches/verification.rs

@@ -119,7 +119,7 @@ fn block_verification(c: &mut Criterion) {
 
 	// Phase 3 verification
 	let block = Unverified::from_rlp(rlp_8481476.clone()).expect(PROOF);
-	let preverified = verification::verify_block_unordered(block, &ethash, true).expect(PROOF);
+	let preverified = verification::verify_block_unordered(block, &ethash, true).expect(PROOF).0;
 	let parent = Unverified::from_rlp(rlp_8481475.clone()).expect(PROOF);
 
 	let mut block_provider = TestBlockChain::new();

ethcore/verification/src/queue/kind.rs

@@ -81,7 +81,7 @@ pub mod blocks {
 
 	use engine::Engine;
 	use common_types::{
-		block::PreverifiedBlock,
+		block::{BlockRlpRepresentation, PreverifiedBlock},
 		errors::{EthcoreError as Error, BlockError},
 		verification::Unverified,
 	};
@@ -96,7 +96,7 @@ pub mod blocks {
 	impl Kind for Blocks {
 		type Input = Unverified;
 		type Unverified = Unverified;
-		type Verified = PreverifiedBlock;
+		type Verified = (PreverifiedBlock, BlockRlpRepresentation);
 
 		fn create(
 			input: Self::Input,
@@ -146,21 +146,21 @@ pub mod blocks {
 		}
 	}
 
-	impl BlockLike for PreverifiedBlock {
+	impl BlockLike for (PreverifiedBlock, BlockRlpRepresentation) {
 		fn hash(&self) -> H256 {
-			self.header.hash()
+			self.0.header.hash()
 		}
 
 		fn raw_hash(&self) -> H256 {
-			keccak_hash::keccak(&self.bytes)
+			keccak_hash::keccak(&self.1)
 		}
 
 		fn parent_hash(&self) -> H256 {
-			*self.header.parent_hash()
+			*self.0.header.parent_hash()
 		}
 
 		fn difficulty(&self) -> U256 {
-			*self.header.difficulty()
+			*self.0.header.difficulty()
 		}
 	}
 }

ethcore/verification/src/verification.rs

@@ -38,7 +38,7 @@ use common_types::{
 	header::Header,
 	errors::{EthcoreError as Error, BlockError},
 	engines::MAX_UNCLE_AGE,
-	block::PreverifiedBlock,
+	block::{BlockRlpRepresentation, PreverifiedBlock},
 	verification::Unverified,
 };
 
@@ -78,8 +78,12 @@ pub fn verify_block_basic(block: &Unverified, engine: &dyn Engine, check_seal: b
 
 /// Phase 2 verification. Perform costly checks such as transaction signatures and block nonce for ethash.
 /// Still operates on a individual block
-/// Returns a `PreverifiedBlock` structure populated with transactions
-pub fn verify_block_unordered(block: Unverified, engine: &dyn Engine, check_seal: bool) -> Result<PreverifiedBlock, Error> {
+/// Returns a `PreverifiedBlock` structure populated with transactions along with the RLP representation of the block.
+pub fn verify_block_unordered(
+	block: Unverified,
+	engine: &dyn Engine,
+	check_seal: bool,
+) -> Result<(PreverifiedBlock, BlockRlpRepresentation), Error> {
 	let header = block.header;
 	if check_seal {
 		engine.verify_block_unordered(&header)?;
@@ -107,12 +111,13 @@ pub fn verify_block_unordered(block: Unverified, engine: &dyn Engine, check_seal
 		})
 		.collect::<Result<Vec<_>, Error>>()?;
 
-	Ok(PreverifiedBlock {
-		header,
-		transactions,
-		uncles: block.uncles,
-		bytes: block.bytes,
-	})
+	Ok((PreverifiedBlock {
+			header,
+			transactions,
+			uncles: block.uncles,
+		},
+		block.bytes,
+	))
 }
 
 /// Parameters for full verification of block family
@@ -502,7 +507,6 @@ mod tests {
 			header,
 			transactions,
 			uncles: block.uncles,
-			bytes: bytes.to_vec(),
 		};
 
 		let full_params = FullFamilyParams {