fixup! [libevmasm] Add support to import evm assembly json.

Author: cameel

libevmasm/Assembly.cpp

@@ -523,11 +523,6 @@ std::pair<std::shared_ptr<Assembly>, std::vector<std::string>> Assembly::fromJSO
 	for (std::string const& attribute: _json.getMemberNames())
 		solRequire(validMembers.count(attribute), AssemblyImportException, "Unknown attribute '" + attribute + "'.");
 
-	solRequire(_json.isMember(".code"), AssemblyImportException, "Member '.code' is missing.");
-	solRequire(_json[".code"].isArray(), AssemblyImportException, "Member '.code' is not an array.");
-	for (Json::Value const& codeItem: _json[".code"])
-		solRequire(codeItem.isObject(), AssemblyImportException, "The '.code' array contains an item that is not an object.");
-
 	if (_level == 0)
 	{
 		if (_json.isMember("sourceList"))
@@ -562,7 +557,13 @@ std::pair<std::shared_ptr<Assembly>, std::vector<std::string>> Assembly::fromJSO
 	else
 		sourceList = _sourceList;
 
+	solRequire(_json.isMember(".code"), AssemblyImportException, "Member '.code' is missing.");
+	solRequire(_json[".code"].isArray(), AssemblyImportException, "Member '.code' is not an array.");
+	for (Json::Value const& codeItem: _json[".code"])
+		solRequire(codeItem.isObject(), AssemblyImportException, "The '.code' array contains an item that is not an object.");
+
 	result->importAssemblyItemsFromJSON(_json[".code"], sourceList);
+
 	if (_json[".auxdata"])
 	{
 		solRequire(_json[".auxdata"].isString(), AssemblyImportException, "Optional member '.auxdata' is not a string.");