Streaming operator for single AssemblyItem.

libevmcore/Assembly.cpp

@@ -88,6 +88,48 @@ string AssemblyItem::getJumpTypeAsString() const
 	}
 }
 
+ostream& dev::eth::operator<<(ostream& _out, AssemblyItem const& _item)
+{
+	switch (_item.type())
+	{
+	case Operation:
+		_out << " " << instructionInfo(_item.instruction()).name;
+		if (_item.instruction() == eth::Instruction::JUMP || _item.instruction() == eth::Instruction::JUMPI)
+			_out << "\t" << _item.getJumpTypeAsString();
+		break;
+	case Push:
+		_out << " PUSH " << hex << _item.data();
+		break;
+	case PushString:
+		_out << " PushString"  << hex << (unsigned)_item.data();
+		break;
+	case PushTag:
+		_out << " PushTag " << _item.data();
+		break;
+	case Tag:
+		_out << " Tag " << _item.data();
+		break;
+	case PushData:
+		_out << " PushData " << hex << (unsigned)_item.data();
+		break;
+	case PushSub:
+		_out << " PushSub " << hex << h256(_item.data()).abridged();
+		break;
+	case PushSubSize:
+		_out << " PushSubSize " << hex << h256(_item.data()).abridged();
+		break;
+	case PushProgramSize:
+		_out << " PushProgramSize";
+		break;
+	case UndefinedItem:
+		_out << " ???";
+		break;
+	default:
+		BOOST_THROW_EXCEPTION(InvalidOpcode());
+	}
+	return _out;
+}
+
 unsigned Assembly::bytesRequired() const
 {
 	for (unsigned br = 1;; ++br)
@@ -142,41 +184,7 @@ void Assembly::append(Assembly const& _a, int _deposit)
 ostream& dev::eth::operator<<(ostream& _out, AssemblyItemsConstRef _i)
 {
 	for (AssemblyItem const& i: _i)
-		switch (i.type())
-		{
-		case Operation:
-			_out << " " << instructionInfo(i.instruction()).name;
-			break;
-		case Push:
-			_out << " PUSH" << i.data();
-			break;
-		case PushString:
-			_out << " PUSH'[" << hex << (unsigned)i.data() << "]";
-			break;
-		case PushTag:
-			_out << " PUSH[tag" << i.data() << "]";
-			break;
-		case Tag:
-			_out << " tag" << i.data() << ": JUMPDEST";
-			break;
-		case PushData:
-			_out << " PUSH*[" << hex << (unsigned)i.data() << "]";
-			break;
-		case PushSub:
-			_out << " PUSHs[" << hex << h256(i.data()).abridged() << "]";
-			break;
-		case PushSubSize:
-			_out << " PUSHss[" << hex << h256(i.data()).abridged() << "]";
-			break;
-		case PushProgramSize:
-			_out << " PUSHSIZE";
-			break;
-		case UndefinedItem:
-			_out << " ???";
-			break;
-		default:
-			BOOST_THROW_EXCEPTION(InvalidOpcode());
-		}
+		_out << i;
 	return _out;
 }
 

libevmcore/Assembly.h

@@ -56,6 +56,10 @@ public:
 	/// @returns the instruction of this item (only valid if type() == Operation)
 	Instruction instruction() const { return Instruction(byte(m_data)); }
 
+	/// @returns true iff the type and data of the items are equal.
+	bool operator==(AssemblyItem const& _other) const { return m_type == _other.m_type && m_data == _other.m_data; }
+	bool operator!=(AssemblyItem const& _other) const { return !operator==(_other); }
+
 	/// @returns an upper bound for the number of bytes required by this item, assuming that
 	/// the value of a jump tag takes @a _addressLength bytes.
 	unsigned bytesRequired(unsigned _addressLength) const;
@@ -79,6 +83,7 @@ private:
 using AssemblyItems = std::vector<AssemblyItem>;
 using AssemblyItemsConstRef = vector_ref<AssemblyItem const>;
 
+std::ostream& operator<<(std::ostream& _out, AssemblyItem const& _item);
 std::ostream& operator<<(std::ostream& _out, AssemblyItemsConstRef _i);
 inline std::ostream& operator<<(std::ostream& _out, AssemblyItems const& _i) { return operator<<(_out, AssemblyItemsConstRef(&_i)); }