merge with master

Cargo.lock

@@ -3,7 +3,7 @@ name = "parity"
 version = "1.3.0"
 dependencies = [
  "ansi_term 0.7.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "clippy 0.0.78 (registry+https://github.com/rust-lang/crates.io-index)",
+ "clippy 0.0.79 (registry+https://github.com/rust-lang/crates.io-index)",
  "ctrlc 1.1.1 (git+https://github.com/ethcore/rust-ctrlc.git)",
  "daemonize 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "docopt 0.6.80 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -129,15 +129,15 @@ dependencies = [
 
 [[package]]
 name = "clippy"
-version = "0.0.78"
+version = "0.0.79"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "clippy_lints 0.0.78 (registry+https://github.com/rust-lang/crates.io-index)",
+ "clippy_lints 0.0.79 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "clippy_lints"
-version = "0.0.78"
+version = "0.0.79"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "matches 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -239,7 +239,7 @@ name = "ethcore"
 version = "1.3.0"
 dependencies = [
  "bloomchain 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "clippy 0.0.78 (registry+https://github.com/rust-lang/crates.io-index)",
+ "clippy 0.0.79 (registry+https://github.com/rust-lang/crates.io-index)",
  "crossbeam 0.2.9 (registry+https://github.com/rust-lang/crates.io-index)",
  "env_logger 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "ethash 1.3.0",
@@ -267,7 +267,7 @@ dependencies = [
 name = "ethcore-dapps"
 version = "1.3.0"
 dependencies = [
- "clippy 0.0.78 (registry+https://github.com/rust-lang/crates.io-index)",
+ "clippy 0.0.79 (registry+https://github.com/rust-lang/crates.io-index)",
  "ethcore-rpc 1.3.0",
  "ethcore-util 1.3.0",
  "hyper 0.9.4 (git+https://github.com/ethcore/hyper)",
@@ -343,7 +343,7 @@ dependencies = [
 name = "ethcore-rpc"
 version = "1.3.0"
 dependencies = [
- "clippy 0.0.78 (registry+https://github.com/rust-lang/crates.io-index)",
+ "clippy 0.0.79 (registry+https://github.com/rust-lang/crates.io-index)",
  "ethash 1.3.0",
  "ethcore 1.3.0",
  "ethcore-devtools 1.3.0",
@@ -367,7 +367,7 @@ dependencies = [
 name = "ethcore-signer"
 version = "1.3.0"
 dependencies = [
- "clippy 0.0.78 (registry+https://github.com/rust-lang/crates.io-index)",
+ "clippy 0.0.79 (registry+https://github.com/rust-lang/crates.io-index)",
  "env_logger 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "ethcore-rpc 1.3.0",
  "ethcore-util 1.3.0",
@@ -387,7 +387,7 @@ dependencies = [
  "arrayvec 0.3.16 (registry+https://github.com/rust-lang/crates.io-index)",
  "bigint 0.1.0",
  "chrono 0.2.22 (registry+https://github.com/rust-lang/crates.io-index)",
- "clippy 0.0.78 (registry+https://github.com/rust-lang/crates.io-index)",
+ "clippy 0.0.79 (registry+https://github.com/rust-lang/crates.io-index)",
  "crossbeam 0.2.9 (registry+https://github.com/rust-lang/crates.io-index)",
  "elastic-array 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "env_logger 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -459,7 +459,7 @@ dependencies = [
 name = "ethsync"
 version = "1.3.0"
 dependencies = [
- "clippy 0.0.78 (registry+https://github.com/rust-lang/crates.io-index)",
+ "clippy 0.0.79 (registry+https://github.com/rust-lang/crates.io-index)",
  "env_logger 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "ethcore 1.3.0",
  "ethcore-util 1.3.0",

Cargo.toml

@@ -22,7 +22,7 @@ fdlimit = { path = "util/fdlimit" }
 num_cpus = "0.2"
 number_prefix = "0.2"
 rpassword = "0.2.1"
-clippy = { version = "0.0.78", optional = true}
+clippy = { version = "0.0.79", optional = true}
 ethcore = { path = "ethcore" }
 ethcore-util = { path = "util" }
 ethsync = { path = "sync" }

dapps/Cargo.toml

@@ -29,7 +29,7 @@ parity-dapps-wallet = { git = "https://github.com/ethcore/parity-dapps-wallet-rs
 parity-dapps-dao = { git = "https://github.com/ethcore/parity-dapps-dao-rs.git", version = "0.4.0", optional = true }
 parity-dapps-makerotc = { git = "https://github.com/ethcore/parity-dapps-makerotc-rs.git", version = "0.3.0", optional = true }
 mime_guess = { version = "1.6.1" }
-clippy = { version = "0.0.78", optional = true}
+clippy = { version = "0.0.79", optional = true}
 
 [build-dependencies]
 serde_codegen = { version = "0.7.0", optional = true }

db/Cargo.toml

@@ -12,7 +12,7 @@ syntex = "*"
 ethcore-ipc-codegen = { path = "../ipc/codegen" }
 
 [dependencies]
-clippy = { version = "0.0.78", optional = true}
+clippy = { version = "0.0.79", optional = true}
 ethcore-devtools = { path = "../devtools" }
 ethcore-ipc = { path = "../ipc/rpc" }
 rocksdb = { git = "https://github.com/ethcore/rust-rocksdb" }

db/src/database.rs

@@ -60,7 +60,7 @@ impl WriteCache {
 		self.entries.insert(key, WriteCacheEntry::Remove);
 	}
 
-	fn get(&self, key: &Vec<u8>) -> Option<Vec<u8>> {
+	fn get(&self, key: &[u8]) -> Option<Vec<u8>> {
 		self.entries.get(key).and_then(
 			|vec_ref| match vec_ref {
 				&WriteCacheEntry::Write(ref val) => Some(val.clone()),

ethcore/Cargo.toml

@@ -22,7 +22,7 @@ ethcore-util = { path = "../util" }
 evmjit = { path = "../evmjit", optional = true }
 ethash = { path = "../ethash" }
 num_cpus = "0.2"
-clippy = { version = "0.0.78", optional = true}
+clippy = { version = "0.0.79", optional = true}
 crossbeam = "0.2.9"
 lazy_static = "0.2"
 ethcore-devtools = { path = "../devtools" }

ethcore/src/block.rs

@@ -16,8 +16,6 @@
 
 //! Blockchain block.
 
-#![cfg_attr(feature="dev", allow(ptr_arg))] // Because of &LastHashes -> &Vec<_>
-
 use common::*;
 use engine::*;
 use state::*;
@@ -76,11 +74,11 @@ pub struct BlockRefMut<'a> {
 	/// Block header.
 	pub header: &'a mut Header,
 	/// Block transactions.
-	pub transactions: &'a Vec<SignedTransaction>,
+	pub transactions: &'a [SignedTransaction],
 	/// Block uncles.
-	pub uncles: &'a Vec<Header>,
+	pub uncles: &'a [Header],
 	/// Transaction receipts.
-	pub receipts: &'a Vec<Receipt>,
+	pub receipts: &'a [Receipt],
 	/// State.
 	pub state: &'a mut State,
 	/// Traces.
@@ -92,11 +90,11 @@ pub struct BlockRef<'a> {
 	/// Block header.
 	pub header: &'a Header,
 	/// Block transactions.
-	pub transactions: &'a Vec<SignedTransaction>,
+	pub transactions: &'a [SignedTransaction],
 	/// Block uncles.
-	pub uncles: &'a Vec<Header>,
+	pub uncles: &'a [Header],
 	/// Transaction receipts.
-	pub receipts: &'a Vec<Receipt>,
+	pub receipts: &'a [Receipt],
 	/// State.
 	pub state: &'a State,
 	/// Traces.
@@ -152,16 +150,16 @@ pub trait IsBlock {
 	fn state(&self) -> &State { &self.block().state }
 
 	/// Get all information on transactions in this block.
-	fn transactions(&self) -> &Vec<SignedTransaction> { &self.block().base.transactions }
+	fn transactions(&self) -> &[SignedTransaction] { &self.block().base.transactions }
 
 	/// Get all information on receipts in this block.
-	fn receipts(&self) -> &Vec<Receipt> { &self.block().receipts }
+	fn receipts(&self) -> &[Receipt] { &self.block().receipts }
 
 	/// Get all information concerning transaction tracing in this block.
 	fn traces(&self) -> &Option<Vec<Trace>> { &self.block().traces }
 
 	/// Get all uncles in this block.
-	fn uncles(&self) -> &Vec<Header> { &self.block().base.uncles }
+	fn uncles(&self) -> &[Header] { &self.block().base.uncles }
 }
 
 /// Trait for a object that has a state database.

ethcore/src/client/client.rs

@@ -426,7 +426,7 @@ impl Client {
 		};
 
 		// Commit results
-		let receipts = block.receipts().clone();
+		let receipts = block.receipts().to_owned();
 		let traces = From::from(block.traces().clone().unwrap_or_else(Vec::new));
 
 		// CHECK! I *think* this is fine, even if the state_root is equal to another

ethcore/src/evm/evm.rs

@@ -107,6 +107,9 @@ pub trait CostType: ops::Mul<Output=Self> + ops::Div<Output=Self> + ops::Add<Out
 	fn overflow_add(self, other: Self) -> (Self, bool);
 	/// Multiple with overflow
 	fn overflow_mul(self, other: Self) -> (Self, bool);
+	/// Single-step full multiplication and division: `self*other/div`
+	/// Should not overflow on intermediate steps
+	fn overflow_mul_div(self, other: Self, div: Self) -> (Self, bool);
 }
 
 impl CostType for U256 {
@@ -129,6 +132,17 @@ impl CostType for U256 {
 	fn overflow_mul(self, other: Self) -> (Self, bool) {
 		Uint::overflowing_mul(self, other)
 	}
+
+	fn overflow_mul_div(self, other: Self, div: Self) -> (Self, bool) {
+		let x = self.full_mul(other);
+		let (U512(parts), o) = Uint::overflowing_div(x, U512::from(div));
+		let overflow = (parts[4] | parts[5] | parts[6] | parts[7]) > 0;
+
+		(
+			U256([parts[0], parts[1], parts[2], parts[3]]),
+			o | overflow
+		)
+	}
 }
 
 impl CostType for usize {
@@ -154,6 +168,14 @@ impl CostType for usize {
 	fn overflow_mul(self, other: Self) -> (Self, bool) {
 		self.overflowing_mul(other)
 	}
+
+	fn overflow_mul_div(self, other: Self, div: Self) -> (Self, bool) {
+		let (c, o) = U128::from(self).overflowing_mul(U128::from(other));
+		let (U128(parts), o1) = c.overflowing_div(U128::from(div));
+		let result = parts[0] as usize;
+		let overflow = o | o1 | (parts[1] > 0) | (parts[0] > result as u64);
+		(result, overflow)
+	}
 }
 
 /// Evm interface
@@ -164,3 +186,41 @@ pub trait Evm {
 	/// to compute the final gas left.
 	fn exec(&mut self, params: ActionParams, ext: &mut Ext) -> Result<GasLeft>;
 }
+
+
+#[test]
+fn should_calculate_overflow_mul_div_without_overflow() {
+	// given
+	let num = 10_000_000;
+
+	// when
+	let (res1, o1) = U256::from(num).overflow_mul_div(U256::from(num), U256::from(num));
+	let (res2, o2) = num.overflow_mul_div(num, num);
+
+	// then
+	assert_eq!(res1, U256::from(num));
+	assert!(!o1);
+	assert_eq!(res2, num);
+	assert!(!o2);
+}
+
+#[test]
+fn should_calculate_overflow_mul_div_with_overflow() {
+	// given
+	let max = ::std::u64::MAX;
+	let num1 = U256([max, max, max, max]);
+	let num2 = ::std::usize::MAX;
+
+	// when
+	let (res1, o1) = num1.overflow_mul_div(num1, num1 - U256::from(2));
+	let (res2, o2) = num2.overflow_mul_div(num2, num2 - 2);
+
+	// then
+	// (x+2)^2/x = (x^2 + 4x + 4)/x = x + 4 + 4/x ~ (MAX-2) + 4 + 0 = 1
+	assert_eq!(res2, 1);
+	assert!(o2);
+
+	assert_eq!(res1, U256::from(1));
+	assert!(o1);
+}
+

ethcore/src/evm/interpreter/gasometer.rs

@@ -68,6 +68,9 @@ impl<Gas: CostType> Gasometer<Gas> {
 		let default_gas = Gas::from(schedule.tier_step_gas[tier]);
 
 		let cost = match instruction {
+			instructions::JUMPDEST => {
+				InstructionCost::Gas(Gas::from(1))
+			},
 			instructions::SSTORE => {
 				let address = H256::from(stack.peek(0));
 				let newval = stack.peek(1);
@@ -106,9 +109,6 @@ impl<Gas: CostType> Gasometer<Gas> {
 			instructions::EXTCODECOPY => {
 				InstructionCost::GasMemCopy(default_gas, try!(self.mem_needed(stack.peek(1), stack.peek(3))), try!(Gas::from_u256(*stack.peek(3))))
 			},
-			instructions::JUMPDEST => {
-				InstructionCost::Gas(Gas::from(1))
-			},
 			instructions::LOG0...instructions::LOG4 => {
 				let no_of_topics = instructions::get_log_topics(instruction);
 				let log_gas = schedule.log_gas + schedule.log_topic_gas * no_of_topics;
@@ -199,14 +199,12 @@ impl<Gas: CostType> Gasometer<Gas> {
 			let s = mem_size >> 5;
 			// s * memory_gas + s * s / quad_coeff_div
 			let a = overflowing!(s.overflow_mul(Gas::from(schedule.memory_gas)));
-			// We need to go to U512 to calculate s*s/quad_coeff_div
+
-			let b = U512::from(s.as_u256()) * U512::from(s.as_u256()) / U512::from(schedule.quad_coeff_div);
+			// Calculate s*s/quad_coeff_div
-			if b > U512::from(!U256::zero()) {
+			let b = overflowing!(s.overflow_mul_div(s, Gas::from(schedule.quad_coeff_div)));
-				Err(evm::Error::OutOfGas)
+			Ok(overflowing!(a.overflow_add(b)))
-			} else {
-				Ok(overflowing!(a.overflow_add(try!(Gas::from_u256(U256::from(b))))))
-			}
 		};
+
 		let current_mem_size = Gas::from(current_mem_size);
 		let req_mem_size_rounded = (overflowing!(mem_size.overflow_add(Gas::from(31 as usize))) >> 5) << 5;
 

ethcore/src/header.rs

@@ -143,7 +143,7 @@ impl Header {
 	/// Get the difficulty field of the header.
 	pub fn difficulty(&self) -> &U256 { &self.difficulty }
 	/// Get the seal field of the header.
-	pub fn seal(&self) -> &Vec<Bytes> { &self.seal }
+	pub fn seal(&self) -> &[Bytes] { &self.seal }
 
 	// TODO: seal_at, set_seal_at &c.
 

ethcore/src/migrations/state/v7.rs

@@ -98,7 +98,7 @@ const V7_VERSION_KEY: &'static [u8] = &[ b'j', b'v', b'e', b'r', 0, 0, 0, 0, 0,
 const DB_VERSION: u32 = 0x203;
 const PADDING : [u8; 10] = [0u8; 10];
 
-/// Version for OverlayRecent database.
+/// Version for `OverlayRecent` database.
 /// more involved than the archive version because of journaling.
 #[derive(Default)]
 pub struct OverlayRecentV7 {
@@ -258,4 +258,4 @@ impl Migration for OverlayRecentV7 {
 		try!(self.walk_journal(source));
 		self.migrate_journal(source, batch, dest)
 	}
-}
+}

ethcore/src/miner/miner.rs

@@ -665,7 +665,7 @@ impl MinerService for Miner {
 		};
 		match (&self.options.pending_set, sealing_set) {
 			(&PendingSet::AlwaysQueue, _) | (&PendingSet::SealingOrElseQueue, None) => queue.top_transactions(),
-			(_, sealing) => sealing.map_or_else(Vec::new, |s| s.transactions().clone()),
+			(_, sealing) => sealing.map_or_else(Vec::new, |s| s.transactions().to_owned()),
 		}
 	}
 
@@ -702,7 +702,7 @@ impl MinerService for Miner {
 					.iter()
 					.map(|t| t.hash());
 
-				let receipts = pending.receipts().clone().into_iter();
+				let receipts = pending.receipts().iter().cloned();
 
 				hashes.zip(receipts).collect()
 			},

ethcore/src/spec/spec.rs

@@ -143,7 +143,7 @@ impl Spec {
 	}
 
 	/// Get the known knodes of the network in enode format.
-	pub fn nodes(&self) -> &Vec<String> { &self.nodes }
+	pub fn nodes(&self) -> &[String] { &self.nodes }
 
 	/// Get the configured Network ID.
 	pub fn network_id(&self) -> U256 { self.params.network_id }

evmbin/Cargo.toml

@@ -4,6 +4,14 @@ description = "Parity's EVM implementation"
 version = "0.1.0"
 authors = ["Ethcore <admin@ethcore.io>"]
 
+[lib]
+name = "evm"
+path = "./src/main.rs"
+
+[[bin]]
+name = "evm"
+path = "./src/main.rs"
+
 [dependencies]
 rustc-serialize = "0.3"
 docopt = { version = "0.6" }

evmbin/bench.sh

@@ -0,0 +1,24 @@
+#!/bin/bash
+
+set -x
+set -e
+
+cargo build --release
+
+# LOOP TEST
+CODE1=606060405260005b620f42408112156019575b6001016007565b600081905550600680602b6000396000f3606060405200
+ethvm --code $CODE1
+echo "^^^^ ethvm"
+./target/release/evm stats --code $CODE1 --gas 4402000
+echo "^^^^ usize"
+./target/release/evm stats --code $CODE1
+echo "^^^^ U256"
+
+# RNG TEST
+CODE2=6060604052600360056007600b60005b620f4240811215607f5767ffe7649d5eca84179490940267f47ed85c4b9a6379019367f8e5dd9a5c994bba9390930267f91d87e4b8b74e55019267ff97f6f3b29cda529290920267f393ada8dd75c938019167fe8d437c45bb3735830267f47d9a7b5428ffec019150600101600f565b838518831882186000555050505050600680609a6000396000f3606060405200
+ethvm --code $CODE2
+echo "^^^^ ethvm"
+./target/release/evm stats --code $CODE2 --gas 143020115
+echo "^^^^ usize"
+./target/release/evm stats --code $CODE2
+echo "^^^^ U256"

evmbin/benches/mod.rs

@@ -0,0 +1,85 @@
+// Copyright 2015, 2016 Ethcore (UK) Ltd.
+// This file is part of Parity.
+
+// Parity is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Parity is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+
+//! benchmarking for EVM
+//! should be started with:
+//! ```bash
+//! multirust run nightly cargo bench
+//! ```
+
+#![feature(test)]
+
+extern crate test;
+extern crate ethcore;
+extern crate evm;
+extern crate ethcore_util;
+extern crate rustc_serialize;
+
+use self::test::{Bencher, black_box};
+
+use evm::run_vm;
+use ethcore::action_params::ActionParams;
+use ethcore_util::{U256, Uint};
+use rustc_serialize::hex::FromHex;
+
+#[bench]
+fn simple_loop_usize(b: &mut Bencher) {
+	simple_loop(U256::from(::std::usize::MAX), b)
+}
+
+#[bench]
+fn simple_loop_u256(b: &mut Bencher) {
+	simple_loop(!U256::zero(), b)
+}
+
+fn simple_loop(gas: U256, b: &mut Bencher) {
+	let code = black_box(
+		"606060405260005b620042408112156019575b6001016007565b600081905550600680602b6000396000f3606060405200".from_hex().unwrap()
+	);
+
+	b.iter(|| {
+		let mut params = ActionParams::default();
+		params.gas = gas;
+		params.code = Some(code.clone());
+
+		run_vm(params)
+	});
+}
+
+#[bench]
+fn rng_usize(b: &mut Bencher) {
+	rng(U256::from(::std::usize::MAX), b)
+}
+
+#[bench]
+fn rng_u256(b: &mut Bencher) {
+	rng(!U256::zero(), b)
+}
+
+fn rng(gas: U256, b: &mut Bencher) {
+	let code = black_box(
+		"6060604052600360056007600b60005b62004240811215607f5767ffe7649d5eca84179490940267f47ed85c4b9a6379019367f8e5dd9a5c994bba9390930267f91d87e4b8b74e55019267ff97f6f3b29cda529290920267f393ada8dd75c938019167fe8d437c45bb3735830267f47d9a7b5428ffec019150600101600f565b838518831882186000555050505050600680609a6000396000f3606060405200".from_hex().unwrap()
+	);
+
+	b.iter(|| {
+		let mut params = ActionParams::default();
+		params.gas = gas;
+		params.code = Some(code.clone());
+
+		run_vm(params)
+	});
+}
+

evmbin/src/main.rs

@@ -17,6 +17,7 @@
 //! Parity EVM interpreter binary.
 
 #![warn(missing_docs)]
+#![allow(dead_code)]
 extern crate ethcore;
 extern crate rustc_serialize;
 extern crate docopt;
@@ -25,7 +26,7 @@ extern crate ethcore_util as util;
 
 mod ext;
 
-use std::time::Instant;
+use std::time::{Instant, Duration};
 use std::str::FromStr;
 use docopt::Docopt;
 use util::{U256, FromHex, Uint, Bytes};
@@ -58,6 +59,15 @@ fn main() {
 	params.code = Some(args.code());
 	params.data = args.data();
 
+	let result = run_vm(params);
+	println!("Gas used: {:?}", result.gas_used);
+	println!("Output: {:?}", result.output);
+	println!("Time: {}.{:.9}s", result.time.as_secs(), result.time.subsec_nanos());
+}
+
+/// Execute VM with given `ActionParams`
+pub fn run_vm(params: ActionParams) -> ExecutionResults {
+	let initial_gas = params.gas;
 	let factory = Factory::new(VMType::Interpreter);
 	let mut vm = factory.create(params.gas);
 	let mut ext = ext::FakeExt::default();
@@ -66,9 +76,21 @@ fn main() {
 	let gas_left = vm.exec(params, &mut ext).finalize(ext).expect("OK");
 	let duration = start.elapsed();
 
-	println!("Gas used: {:?}", args.gas() - gas_left);
+	ExecutionResults {
-	println!("Output: {:?}", "");
+		gas_used: initial_gas - gas_left,
-	println!("Time: {}.{:.9}s", duration.as_secs(), duration.subsec_nanos());
+		output: Vec::new(),
+		time: duration,
+	}
+}
+
+/// VM execution results
+pub struct ExecutionResults {
+	/// Used gas
+	pub gas_used: U256,
+	/// Output as bytes
+	pub output: Vec<u8>,
+	/// Time Taken
+	pub time: Duration,
 }
 
 #[derive(Debug, RustcDecodable)]

ipc/codegen/src/codegen.rs

@@ -62,24 +62,10 @@ pub fn expand_ipc_implementation(
 	};
 
 	push_client(cx, &builder, &interface_map, push);
-	push_handshake_struct(cx, push);
 
 	push(Annotatable::Item(interface_map.item));
 }
 
-fn push_handshake_struct(cx: &ExtCtxt, push: &mut FnMut(Annotatable)) {
-	let handshake_item = quote_item!(cx,
-		#[derive(Binary)]
-		pub struct BinHandshake {
-			api_version: String,
-			protocol_version: String,
-			reserved: Vec<u8>,
-		}
-	).unwrap();
-
-	push(Annotatable::Item(handshake_item));
-}
-
 fn field_name(builder: &aster::AstBuilder, arg: &Arg) -> ast::Ident {
 	match arg.pat.node {
 		PatKind::Ident(_, ref ident, _) => builder.id(ident.node),
@@ -601,15 +587,14 @@ fn push_client_implementation(
 
 	let handshake_item = quote_impl_item!(cx,
 		pub fn handshake(&self) -> Result<(), ::ipc::Error> {
-			let payload = BinHandshake {
+			let payload = ::ipc::Handshake {
-				protocol_version: $item_ident::protocol_version().to_string(),
+				protocol_version: $item_ident::protocol_version(),
-				api_version: $item_ident::api_version().to_string(),
+				api_version: $item_ident::api_version(),
-				reserved: vec![0u8; 64],
 			};
 
 			::ipc::invoke(
 				0,
-				&Some(::ipc::binary::serialize(&payload).unwrap()),
+				&Some(::ipc::binary::serialize(&::ipc::BinHandshake::from(payload)).unwrap()),
 				&mut *self.socket.write().unwrap());
 
 			let mut result = vec![0u8; 1];
@@ -673,18 +658,15 @@ fn implement_handshake_arm(
 ) -> (ast::Arm, ast::Arm)
 {
 	let handshake_deserialize = quote_stmt!(&cx,
-		let handshake_payload = ::ipc::binary::deserialize_from::<BinHandshake, _>(r).unwrap();
+		let handshake_payload = ::ipc::binary::deserialize_from::<::ipc::BinHandshake, _>(r).unwrap();
 	);
 
 	let handshake_deserialize_buf = quote_stmt!(&cx,
-		let handshake_payload = ::ipc::binary::deserialize::<BinHandshake>(buf).unwrap();
+		let handshake_payload = ::ipc::binary::deserialize::<::ipc::BinHandshake>(buf).unwrap();
 	);
 
 	let handshake_serialize = quote_expr!(&cx,
-		::ipc::binary::serialize::<bool>(&Self::handshake(&::ipc::Handshake {
+		::ipc::binary::serialize::<bool>(&Self::handshake(&handshake_payload.to_semver())).unwrap()
-			api_version: ::semver::Version::parse(&handshake_payload.api_version).unwrap(),
-			protocol_version: ::semver::Version::parse(&handshake_payload.protocol_version).unwrap(),
-		})).unwrap()
 	);
 
 	(

ipc/rpc/Cargo.toml

@@ -8,6 +8,6 @@ license = "GPL-3.0"
 
 [dependencies]
 ethcore-devtools = { path = "../../devtools" }
-semver = "0.2.0"
 nanomsg = { git = "https://github.com/ethcore/nanomsg.rs.git" }
 ethcore-util = { path = "../../util" }
+semver = "0.2"

ipc/rpc/src/binary.rs

@@ -21,6 +21,7 @@ use util::numbers::{U256, U512, H256, H2048, Address};
 use std::mem;
 use std::collections::{VecDeque, BTreeMap};
 use std::ops::Range;
+use super::Handshake;
 
 #[derive(Debug)]
 pub struct BinaryConvertError;
@@ -554,6 +555,61 @@ macro_rules! binary_fixed_size {
 	}
 }
 
+/// Fixed-sized version of Handshake struct
+#[derive(Clone, Debug, PartialEq, Eq)]
+pub struct BinHandshake {
+	api_version: BinVersion,
+	protocol_version: BinVersion,
+}
+
+/// Shorten version of semver Version without `pre` and `build` information
+#[derive(Clone, Debug, PartialEq, Eq)]
+pub struct BinVersion {
+	pub major: u64,
+	pub minor: u64,
+	pub patch: u64,
+}
+
+impl From<Handshake> for BinHandshake {
+	fn from(other: Handshake) -> Self {
+		BinHandshake {
+			api_version: BinVersion::from(other.api_version),
+			protocol_version: BinVersion::from(other.protocol_version),
+		}
+	}
+}
+
+impl BinHandshake {
+	pub fn to_semver(self) -> Handshake {
+		Handshake {
+			api_version: self.api_version.to_semver(),
+			protocol_version: self.protocol_version.to_semver(),
+		}
+	}
+}
+
+impl BinVersion {
+	pub fn to_semver(self) -> ::semver::Version {
+		::semver::Version {
+			major: self.major,
+			minor: self.minor,
+			patch: self.patch,
+			pre: vec![],
+			build: vec![],
+		}
+	}
+}
+
+impl From<::semver::Version> for BinVersion {
+	fn from(other: ::semver::Version) -> Self {
+ 		BinVersion {
+			major: other.major,
+			minor: other.minor,
+			patch: other.patch,
+		}
+	}
+}
+
 binary_fixed_size!(u64);
 binary_fixed_size!(u32);
 binary_fixed_size!(usize);
@@ -564,6 +620,7 @@ binary_fixed_size!(U512);
 binary_fixed_size!(H256);
 binary_fixed_size!(H2048);
 binary_fixed_size!(Address);
+binary_fixed_size!(BinHandshake);
 
 #[test]
 fn vec_serialize() {
@@ -706,8 +763,6 @@ fn serialize_opt_vec() {
 
 #[test]
 fn serialize_opt_vec_payload() {
- 	use std::io::Cursor;
-
 	let optional_vec: Option<Vec<u8>> = None;
 	let payload = serialize(&optional_vec).unwrap();
 
@@ -776,3 +831,23 @@ fn serialize_btree() {
 
 	assert_eq!(res[&1u64], 5u64);
 }
+
+#[test]
+fn serialize_handshake() {
+	use std::io::{Cursor, SeekFrom, Seek};
+
+	let mut buff = Cursor::new(Vec::new());
+
+	let handshake = Handshake {
+		api_version: ::semver::Version::parse("1.2.0").unwrap(),
+		protocol_version: ::semver::Version::parse("1.2.0").unwrap(),
+	};
+
+	serialize_into(&BinHandshake::from(handshake.clone()), &mut buff).unwrap();
+
+	buff.seek(SeekFrom::Start(0)).unwrap();
+	let res = deserialize_from::<BinHandshake, _>(&mut buff).unwrap().to_semver();
+
+	assert_eq!(res, handshake);
+
+}

ipc/rpc/src/interface.rs

@@ -20,6 +20,7 @@ use std::io::{Read, Write};
 use std::marker::Sync;
 use semver::Version;
 
+#[derive(Debug, PartialEq, Eq, Clone)]
 /// Handshake for client and server to negotiate api/protocol version
 pub struct Handshake {
 	pub protocol_version: Version,

ipc/rpc/src/lib.rs

@@ -24,4 +24,4 @@ extern crate ethcore_util as util;
 pub mod interface;
 pub mod binary;
 pub use interface::{IpcInterface, IpcSocket, invoke, IpcConfig, Handshake, Error, WithSocket};
-pub use binary::{BinaryConvertable, BinaryConvertError};
+pub use binary::{BinaryConvertable, BinaryConvertError, BinHandshake};

json/Cargo.toml

@@ -10,7 +10,7 @@ rustc-serialize = "0.3"
 serde = "0.7.0"
 serde_json = "0.7.0"
 serde_macros = { version = "0.7.0", optional = true }
-clippy = { version = "0.0.78", optional = true}
+clippy = { version = "0.0.79", optional = true}
 
 [build-dependencies]
 serde_codegen = { version = "0.7.0", optional = true }

json/src/bytes.rs

@@ -40,9 +40,9 @@ impl Into<Vec<u8>> for Bytes {
 }
 
 impl Deref for Bytes {
-	type Target = Vec<u8>;
+	type Target = [u8];
 
-	fn deref(&self) -> &Vec<u8> {
+	fn deref(&self) -> &[u8] {
 		&self.0
 	}
 }

parity/configuration.rs

@@ -238,7 +238,7 @@ impl Configuration {
 				})
 			}).collect(),
 			Some(_) => Vec::new(),
-			None => spec.nodes().clone(),
+			None => spec.nodes().to_owned(),
 		}
 	}
 

rpc/Cargo.toml

@@ -23,7 +23,7 @@ ethcore-devtools = { path = "../devtools" }
 rustc-serialize = "0.3"
 transient-hashmap = "0.1"
 serde_macros = { version = "0.7.0", optional = true }
-clippy = { version = "0.0.78", optional = true}
+clippy = { version = "0.0.79", optional = true}
 json-ipc-server = { git = "https://github.com/ethcore/json-ipc-server.git" }
 ethcore-ipc = { path = "../ipc/rpc" }
 

rpc/src/v1/impls/eth.rs

@@ -508,7 +508,7 @@ impl<C, S, M, EM> Eth for EthClient<C, S, M, EM> where
 	fn compilers(&self, params: Params) -> Result<Value, Error> {
 		try!(self.active());
 		match params {
-			Params::None => to_value(&vec![] as &Vec<String>),
+			Params::None => to_value(&(&[] as &[String])),
 			_ => Err(Error::invalid_params())
 		}
 	}

signer/Cargo.toml

@@ -20,7 +20,7 @@ ethcore-util = { path = "../util" }
 ethcore-rpc = { path = "../rpc" }
 parity-minimal-sysui = { git = "https://github.com/ethcore/parity-dapps-minimal-sysui-rs.git", version = "0.2.0" }
 
-clippy = { version = "0.0.78", optional = true}
+clippy = { version = "0.0.79", optional = true}
 
 [features]
 dev = ["clippy"]

signer/src/ws_server/session.rs

@@ -25,11 +25,11 @@ use std::str::FromStr;
 use jsonrpc_core::IoHandler;
 use util::H256;
 
-fn origin_is_allowed(self_origin: &str, header: Option<&Vec<u8>>) -> bool {
+fn origin_is_allowed(self_origin: &str, header: Option<&[u8]>) -> bool {
 	match header {
 		None => false,
 		Some(h) => {
-			let v = String::from_utf8(h.clone()).ok();
+			let v = String::from_utf8(h.to_owned()).ok();
 			match v {
 				Some(ref origin) if origin.starts_with("chrome-extension://") => true,
 				Some(ref origin) if origin.starts_with(self_origin) => true,
@@ -84,8 +84,8 @@ pub struct Session {
 
 impl ws::Handler for Session {
 	fn on_request(&mut self, req: &ws::Request) -> ws::Result<(ws::Response)> {
-		let origin = req.header("origin").or_else(|| req.header("Origin"));
+		let origin = req.header("origin").or_else(|| req.header("Origin")).map(|x| &x[..]);
-		let host = req.header("host").or_else(|| req.header("Host"));
+		let host = req.header("host").or_else(|| req.header("Host")).map(|x| &x[..]);
 
 		// Check request origin and host header.
 		if !origin_is_allowed(&self.self_origin, origin) && !(origin.is_none() && origin_is_allowed(&self.self_origin, host)) {

sync/Cargo.toml

@@ -10,7 +10,7 @@ authors = ["Ethcore <admin@ethcore.io"]
 [dependencies]
 ethcore-util = { path = "../util" }
 ethcore = { path = "../ethcore" }
-clippy = { version = "0.0.78", optional = true}
+clippy = { version = "0.0.79", optional = true}
 log = "0.3"
 env_logger = "0.3"
 time = "0.1.34"

util/Cargo.toml

@@ -27,7 +27,7 @@ itertools = "0.4"
 crossbeam = "0.2"
 slab = "0.2"
 sha3 = { path = "sha3" }
-clippy = { version = "0.0.78", optional = true}
+clippy = { version = "0.0.79", optional = true}
 igd = "0.5.0"
 ethcore-devtools = { path = "../devtools" }
 libc = "0.2.7"

util/src/bytes.rs

@@ -242,7 +242,7 @@ pub enum FromBytesError {
 }
 
 /// Value that can be serialized from bytes array
-pub trait FromRawBytes : Sized {
+pub trait FromRawBytes: Sized {
 	/// function that will instantiate and initialize object from slice
 	fn from_bytes(d: &[u8]) -> Result<Self, FromBytesError>;
 }
@@ -255,7 +255,7 @@ impl<T> FromRawBytes for T where T: FixedHash {
 			Ordering::Equal => ()
 		};
 
-		let mut res: Self = unsafe { mem::uninitialized() };
+		let mut res = T::zero();
 		res.copy_raw(bytes);
 		Ok(res)
 	}
@@ -271,7 +271,7 @@ macro_rules! sized_binary_map {
 					::std::cmp::Ordering::Greater => return Err(FromBytesError::TooLong),
 					::std::cmp::Ordering::Equal => ()
 				};
-				let mut res: Self = unsafe { ::std::mem::uninitialized() };
+				let mut res: Self = 0;
 				res.copy_raw(bytes);
 				Ok(res)
 			}
@@ -298,7 +298,7 @@ sized_binary_map!(u32);
 sized_binary_map!(u64);
 
 /// Value that can be serialized from variable-length byte array
-pub trait FromRawBytesVariable : Sized {
+pub trait FromRawBytesVariable: Sized {
 	/// Create value from slice
 	fn from_bytes_variable(bytes: &[u8]) -> Result<Self, FromBytesError>;
 }
@@ -326,7 +326,7 @@ impl<T> FromRawBytesVariable for Vec<T> where T: FromRawBytes {
 		let size_of_t = mem::size_of::<T>();
 		let length_in_chunks = bytes.len() / size_of_t;
 
-		let mut result = Vec::with_capacity(length_in_chunks );
+		let mut result = Vec::with_capacity(length_in_chunks);
 		unsafe { result.set_len(length_in_chunks) };
 		for i in 0..length_in_chunks {
 			*result.get_mut(i).unwrap() = try!(T::from_bytes(
@@ -339,7 +339,7 @@ impl<T> FromRawBytesVariable for Vec<T> where T: FromRawBytes {
 impl<V1, T2> FromRawBytes for (V1, T2) where V1: FromRawBytesVariable, T2: FromRawBytes {
 	fn from_bytes(bytes: &[u8]) -> Result<Self, FromBytesError> {
 		let header = 8usize;
-		let mut map: (u64, ) = unsafe { mem::uninitialized() };
+		let mut map: (u64, ) = (0,);
 
 		if bytes.len() < header { return  Err(FromBytesError::NotLongEnough); }
 		map.copy_raw(&bytes[0..header]);
@@ -358,7 +358,7 @@ impl<V1, V2, T3> FromRawBytes for (V1, V2, T3)
 {
 	fn from_bytes(bytes: &[u8]) -> Result<Self, FromBytesError> {
 		let header = 16usize;
-		let mut map: (u64, u64, ) = unsafe { mem::uninitialized() };
+		let mut map: (u64, u64, ) = (0, 0,);
 
 		if bytes.len() < header { return  Err(FromBytesError::NotLongEnough); }
 		map.copy_raw(&bytes[0..header]);
@@ -373,7 +373,7 @@ impl<V1, V2, T3> FromRawBytes for (V1, V2, T3)
 	}
 }
 
-impl<'a, V1, T2> ToBytesWithMap for (&'a Vec<V1>, &'a T2) where V1: ToBytesWithMap, T2: ToBytesWithMap {
+impl<'a, V1, X1, T2> ToBytesWithMap for (X1, &'a T2) where V1: ToBytesWithMap, X1: Deref<Target=[V1]>, T2: ToBytesWithMap {
 	fn to_bytes_map(&self) -> Vec<u8> {
 		let header = 8usize;
 		let v1_size = mem::size_of::<V1>();
@@ -390,9 +390,9 @@ impl<'a, V1, T2> ToBytesWithMap for (&'a Vec<V1>, &'a T2) where V1: ToBytesWithM
 
 }
 
-impl<'a, V1, V2, T3> ToBytesWithMap for (&'a Vec<V1>, &'a Vec<V2>, &'a T3)
+impl<'a, V1, X1, V2, X2, T3> ToBytesWithMap for (X1, X2, &'a T3)
-	where V1: ToBytesWithMap,
+	where V1: ToBytesWithMap, X1: Deref<Target=[V1]>,
-		V2: ToBytesWithMap,
+		V2: ToBytesWithMap, X2: Deref<Target=[V2]>,
 		T3: ToBytesWithMap
 {
 	fn to_bytes_map(&self) -> Vec<u8> {
@@ -433,7 +433,7 @@ pub trait ToBytesWithMap {
 
 impl<T> ToBytesWithMap for T where T: FixedHash {
 	fn to_bytes_map(&self) -> Vec<u8> {
-		self.as_slice().to_vec()
+		self.as_slice().to_owned()
 	}
 }
 
@@ -493,7 +493,7 @@ fn populate_big_types() {
 fn raw_bytes_from_tuple() {
 	type Tup = (Vec<u16>, u16);
 
-	let tup = (vec![1u16, 1u16, 1u16, 1u16], 10u16);
+	let tup: (&[u16], u16) = (&[1; 4], 10);
 	let bytes = vec![
 		// map
 		8u8, 0u8, 0u8, 0u8, 0u8, 0u8, 0u8, 0u8,
@@ -505,18 +505,19 @@ fn raw_bytes_from_tuple() {
 		// 10u16
 		10u8, 0u8];
 
-	let tup_from = Tup::from_bytes(&bytes).unwrap();
+	let (v, x) = Tup::from_bytes(&bytes).unwrap();
-	assert_eq!(tup, tup_from);
+	assert_eq!(tup, (&v[..], x));
+	let tup_from = (v, x);
 
-	let tup_to = (&tup_from.0, &tup_from.1);
+	let tup_to = (tup_from.0, &tup_from.1);
 	let bytes_to = tup_to.to_bytes_map();
 	assert_eq!(bytes_to, bytes);
 }
 
 #[test]
 fn bytes_map_from_triple() {
-	let data = (vec![2u16; 6], vec![6u32; 3], 12u64);
+	let data: (&[u16], &[u32], u64) = (&[2; 6], &[6; 3], 12u64);
-	let bytes_map = (&data.0, &data.1, &data.2).to_bytes_map();
+	let bytes_map = (data.0, data.1, &data.2).to_bytes_map();
 	assert_eq!(bytes_map, vec![
 		// data map 2 x u64
 		12, 0, 0, 0, 0, 0, 0, 0,

util/src/triehash.rs

@@ -195,7 +195,7 @@ fn hash256rlp(input: &[(Vec<u8>, Vec<u8>)], pre_len: usize, stream: &mut RlpStre
 	}
 
 	// take slices
-	let key: &Vec<u8> = &input[0].0;
+	let key: &[u8] = &input[0].0;
 	let value: &[u8] = &input[0].1;
 
 	// if the slice contains just one item, append the suffix of the key

util/src/vector.rs

@@ -17,23 +17,23 @@
 //! Vector extensions.
 
 /// Returns len of prefix shared with elem
-/// 
+///
 /// ```rust
 ///	extern crate ethcore_util as util;
 ///	use util::vector::SharedPrefix;
-///	
+///
 ///	fn main () {
 ///		let a = vec![1,2,3,3,5];
 ///		let b = vec![1,2,3];
 ///		assert_eq!(a.shared_prefix_len(&b), 3);
 ///	}
 /// ```
-pub trait SharedPrefix <T> {
+pub trait SharedPrefix<T> {
 	/// Get common prefix length
 	fn shared_prefix_len(&self, elem: &[T]) -> usize;
 }
 
-impl <T> SharedPrefix<T> for Vec<T> where T: Eq {
+impl<T> SharedPrefix<T> for [T] where T: Eq {
 	fn shared_prefix_len(&self, elem: &[T]) -> usize {
 		use std::cmp;
 		let len = cmp::min(self.len(), elem.len());
@@ -58,7 +58,7 @@ mod test {
 		let b = vec![1,2,3];
 		assert_eq!(a.shared_prefix_len(&b), 3);
 	}
-	
+
 	#[test]
 	fn test_shared_prefix3() {
 		let a = vec![1,2,3,4,5,6];