Fix up rvalue references. Avoid a copy of an EVM code in ExtVM.

libethereum/Account.h

@@ -152,8 +152,7 @@ public:
 	h256 codeHash() const { assert(!isFreshCode()); return m_codeHash; }
 
 	/// Sets the code of the account. Must only be called when isFreshCode() returns true.
-	void setCode(bytes&& _code) { assert(isFreshCode()); m_codeCache = _code; changed(); }
-	void setCode(bytes const& _code) { assert(isFreshCode()); m_codeCache = _code; changed(); }
+	void setCode(bytes&& _code) { assert(isFreshCode()); m_codeCache = std::move(_code); changed(); }
 
 	/// @returns true if the account's code is available through code().
 	bool codeCacheValid() const { return m_codeHash == EmptySHA3 || m_codeHash == c_contractConceptionCodeHash || m_codeCache.size(); }
@@ -206,4 +205,3 @@ private:
 
 }
 }
-

libethereum/VerifiedBlock.h

@@ -47,7 +47,7 @@ struct VerifiedBlock
 
 	VerifiedBlock(BlockInfo&& _bi)
 	{
-		verified.info = _bi;
+		verified.info = std::move(_bi);
 	}
 
 	VerifiedBlock(VerifiedBlock&& _other):

libevm/ExtVMFace.cpp

@@ -21,22 +21,20 @@
 
 #include "ExtVMFace.h"
 
-using namespace std;
 using namespace dev;
 using namespace dev::eth;
 
-ExtVMFace::ExtVMFace(Address _myAddress, Address _caller, Address _origin, u256 _value, u256 _gasPrice, bytesConstRef _data, bytes const& _code, h256 const& _codeHash, BlockInfo const& _previousBlock, BlockInfo const& _currentBlock, LastHashes const& _lh, unsigned _depth):
+ExtVMFace::ExtVMFace(Address _myAddress, Address _caller, Address _origin, u256 _value, u256 _gasPrice, bytesConstRef _data, bytes _code, h256 const& _codeHash, BlockInfo const& _previousBlock, BlockInfo const& _currentBlock, LastHashes const& _lh, unsigned _depth):
 	myAddress(_myAddress),
 	caller(_caller),
 	origin(_origin),
 	value(_value),
 	gasPrice(_gasPrice),
 	data(_data),
-	code(_code),
+	code(std::move(_code)),
 	codeHash(_codeHash),
 	lastHashes(_lh),
 	previousBlock(_previousBlock),
 	currentBlock(_currentBlock),
 	depth(_depth)
 {}
-

libevm/ExtVMFace.h

@@ -161,7 +161,7 @@ public:
 	ExtVMFace() = default;
 
 	/// Full constructor.
-	ExtVMFace(Address _myAddress, Address _caller, Address _origin, u256 _value, u256 _gasPrice, bytesConstRef _data, bytes const& _code, h256 const& _codeHash, BlockInfo const& _previousBlock, BlockInfo const& _currentBlock, LastHashes const& _lh, unsigned _depth);
+	ExtVMFace(Address _myAddress, Address _caller, Address _origin, u256 _value, u256 _gasPrice, bytesConstRef _data, bytes _code, h256 const& _codeHash, BlockInfo const& _previousBlock, BlockInfo const& _currentBlock, LastHashes const& _lh, unsigned _depth);
 
 	virtual ~ExtVMFace() = default;
 

libp2p/Session.cpp

@@ -256,9 +256,8 @@ bool Session::checkPacket(bytesConstRef _msg)
 
 void Session::send(bytes&& _msg)
 {
-	clog(NetLeft) << RLP(bytesConstRef(&_msg).cropped(1));
-
 	bytesConstRef msg(&_msg);
+	clog(NetLeft) << RLP(msg.cropped(1));
 	if (!checkPacket(msg))
 		clog(NetWarn) << "INVALID PACKET CONSTRUCTED!";
 
@@ -268,7 +267,7 @@ void Session::send(bytes&& _msg)
 	bool doWrite = false;
 	{
 		Guard l(x_writeQueue);
-		m_writeQueue.push_back(_msg);
+		m_writeQueue.push_back(std::move(_msg));
 		doWrite = (m_writeQueue.size() == 1);
 	}
 
@@ -387,7 +386,7 @@ void Session::doRead()
 			drop(BadProtocol);
 			return;
 		}
-		
+
 		/// read padded frame and mac
 		auto tlen = header.length + header.padding + h128::size;
 		ba::async_read(m_socket->ref(), boost::asio::buffer(m_data, tlen), [this, self, header, tlen](boost::system::error_code ec, std::size_t length)

libtestutils/StateLoader.cpp

@@ -1,16 +1,16 @@
 /*
 	This file is part of cpp-ethereum.
- 
+
 	cpp-ethereum 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.
- 
+
 	cpp-ethereum 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 cpp-ethereum.  If not, see <http://www.gnu.org/licenses/>.
  */
@@ -36,10 +36,10 @@ StateLoader::StateLoader(Json::Value const& _json, std::string const& _dbPath):
 		Address address = Address(name);
 		bytes code = fromHex(o["code"].asString().substr(2));
 
-		if (code.size())
+		if (!code.empty())
 		{
 			m_state.m_cache[address] = Account(u256(o["balance"].asString()), Account::ContractConception);
-			m_state.m_cache[address].setCode(code);
+			m_state.m_cache[address].setCode(std::move(code));
 		}
 		else
 			m_state.m_cache[address] = Account(u256(o["balance"].asString()), Account::NormalCreation);

mix/DebuggingStateWrapper.h

@@ -69,7 +69,7 @@ class QSolState: public QObject
 
 public:
 	QSolState(QObject* _parent, QVariantMap&& _storage, QVariantList&& _callStack, QVariantMap&& _locals, int _start, int _end, QString _sourceName):
-		QObject(_parent), m_storage(_storage), m_callStack(_callStack), m_locals(_locals), m_start(_start), m_end(_end), m_sourceName(_sourceName)
+		QObject(_parent), m_storage(std::move(_storage)), m_callStack(std::move(_callStack)), m_locals(std::move(_locals)), m_start(_start), m_end(_end), m_sourceName(_sourceName)
 	{ }
 
 private:
@@ -92,7 +92,7 @@ class QCode: public QObject
 	Q_PROPERTY(QString documentId MEMBER m_document CONSTANT)
 
 public:
-	QCode(QObject* _owner, QString const& _address, QVariantList&& _instrunctions): QObject(_owner), m_instructions(_instrunctions), m_address(_address) {}
+	QCode(QObject* _owner, QString const& _address, QVariantList&& _instrunctions): QObject(_owner), m_instructions(std::move(_instrunctions)), m_address(_address) {}
 	void setDocument(QString const& _documentId) { m_document = _documentId; }
 
 private:
@@ -110,7 +110,7 @@ class QCallData: public QObject
 	Q_PROPERTY(QVariantList items MEMBER m_items CONSTANT)
 
 public:
-	QCallData(QObject* _owner, QVariantList&& _items): QObject(_owner), m_items(_items) {}
+	QCallData(QObject* _owner, QVariantList&& _items): QObject(_owner), m_items(std::move(_items)) {}
 
 private:
 	QVariantList m_items;
@@ -126,7 +126,7 @@ class QDebugData: public QObject
 
 public:
 	QDebugData() { }
-	void setStates(QVariantList&& _states) { m_states = _states; }
+	void setStates(QVariantList&& _states) { m_states = std::move(_states); }
 
 private:
 	QVariantList m_states;

mix/HttpServer.h

@@ -46,7 +46,7 @@ class HttpRequest: public QObject
 
 private:
 	HttpRequest(QObject* _parent, QUrl&& _url, QString&& _content, QVariantMap&& _headers):
-		QObject(_parent), m_url(_url), m_content(_content), m_headers(_headers)
+		QObject(_parent), m_url(std::move(_url)), m_content(std::move(_content)), m_headers(std::move(_headers))
 	{
 	}
 

test/TestHelper.cpp

@@ -199,10 +199,10 @@ void ImportTest::importState(json_spirit::mObject& _o, State& _state, stateOptio
 			stateOptions.m_bHasCode = true;
 		}
 
-		if (code.size())
+		if (!code.empty())
 		{
 			_state.m_cache[address] = Account(balance, Account::ContractConception);
-			_state.m_cache[address].setCode(code);
+			_state.m_cache[address].setCode(std::move(code));
 		}
 		else
 			_state.m_cache[address] = Account(balance, Account::NormalCreation);