minor cleanup

quantum/gate/ir/GateQIR.cpp

@@ -236,30 +236,34 @@ bool GateQIR::incrementLayer(const std::vector<std::string>& gateCommand,
 
 std::string GateQIR::toAssemblyString(const std::string& kernelName, const std::string& accBufferVarName) {
 	std::string retStr = "";
-	auto kernel = getKernel(kernelName);
-
-	std::set<int> qubitsUsed;
-	InstructionIterator it(kernel);
-	while (it.hasNext()) {
-		// Get the next node in the tree
-		auto nextInst = it.next();
-
-		// If enabled, invoke the accept
-		// method which kicks off the visitor
-		// to execute the appropriate lambda.
-		if (nextInst->isEnabled() && !nextInst->isComposite()) {
-
-			for (auto qi : nextInst->bits()) {
-				qubitsUsed.insert(qi);
+	if (!kernelName.empty()) {
+		auto kernel = getKernel(kernelName);
+		return kernel->toString(accBufferVarName);
+
+		std::set<int> qubitsUsed;
+		InstructionIterator it(kernel);
+		while (it.hasNext()) {
+			// Get the next node in the tree
+			auto nextInst = it.next();
+
+			// If enabled, invoke the accept
+			// method which kicks off the visitor
+			// to execute the appropriate lambda.
+			if (nextInst->isEnabled() && !nextInst->isComposite()) {
+
+				for (auto qi : nextInst->bits()) {
+					qubitsUsed.insert(qi);
+				}
 			}
 		}
-	}
 
-	for (auto qi : qubitsUsed) {
-		retStr += "qubit " + accBufferVarName + std::to_string(qi) + "\n";
-	}
-	for (auto f : kernels) {
-		retStr += f->toString(accBufferVarName);
+		for (auto qi : qubitsUsed) {
+			retStr += "qubit " + accBufferVarName + std::to_string(qi) + "\n";
+		}
+	} else {
+		for (auto f : kernels) {
+			retStr += f->toString(accBufferVarName);
+		}
 	}
 	return retStr;
 }
@@ -269,13 +273,6 @@ void GateQIR::persist(std::ostream& outStream) {
 	JsonVisitor visitor(kernels);
 	outStream << visitor.write();
 
-//	StringBuffer sb;
-//	PrettyWriter<StringBuffer> writer(sb);
-//
-//	serializeJson(writer);
-//
-//	outStream << sb.GetString();
-
 	return;
 }