Vec<u8> -> Bytes and clearing log API

src/evm/ext.rs

@@ -1,5 +1,6 @@
 //! Interface for Evm externalities.
 
+use common::Bytes;
 use util::hash::*;
 use util::uint::*;
 use evm::{Schedule, Error};
@@ -38,10 +39,10 @@ pub trait Ext {
 			output: &mut [u8]) -> Result<(U256, bool), Error>;
 
 	/// Returns code at given address
-	fn extcode(&self, address: &Address) -> Vec<u8>;
+	fn extcode(&self, address: &Address) -> Bytes;
 
 	/// Creates log entry with given topics and data
-	fn log(&mut self, topics: Vec<H256>, data: Vec<u8>);
+	fn log(&mut self, topics: Vec<H256>, data: &[u8]);
 
 	/// Should be called when transaction calls `RETURN` opcode.
 	/// Returns gas_left if cost of returning the data is not too high.

src/evm/interpreter.rs

@@ -614,7 +614,7 @@ impl Interpreter {
 					.iter()
 					.map(H256::from)
 					.collect();
-				ext.log(topics, mem.read_slice(offset, size).to_vec());
+				ext.log(topics, mem.read_slice(offset, size));
 			},
 			instructions::PUSH1...instructions::PUSH32 => {
 				let bytes = instructions::get_push_bytes(instruction);

src/evm/jit.rs

@@ -7,7 +7,7 @@ use evm;
 struct RuntimeData {
 	gas: U256,
 	gas_price: U256,
-	call_data: Vec<u8>,
+	call_data: Bytes,
 	address: Address,
 	caller: Address,
 	origin: Address,
@@ -17,7 +17,7 @@ struct RuntimeData {
 	gas_limit: U256,
 	number: u64,
 	timestamp: u64,
-	code: Vec<u8>
+	code: Bytes
 }
 
 impl RuntimeData {

src/evm/tests.rs

@@ -66,14 +66,14 @@ impl Ext for FakeExt {
 		unimplemented!();
 	}
 
-	fn extcode(&self, address: &Address) -> Vec<u8> {
+	fn extcode(&self, address: &Address) -> Bytes {
 		self.codes.get(address).unwrap_or(&Bytes::new()).clone()
 	}
 
-	fn log(&mut self, topics: Vec<H256>, data: Vec<u8>) {
+	fn log(&mut self, topics: Vec<H256>, data: &[u8]) {
 		self.logs.push(FakeLogEntry {
 			topics: topics,
-			data: data
+			data: data.to_vec()
 		});
 	}