1 files changed, 38 insertions, 0 deletions
diff --git a/libyul/optimiser/NameDispenser.cpp b/libyul/optimiser/NameDispenser.cpp
new file mode 100644
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--- /dev/null
+++ b/libyul/optimiser/NameDispenser.cpp
@@ -0,0 +1,38 @@
+/*
+	This file is part of solidity.
+
+	solidity 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.
+
+	solidity 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 solidity.  If not, see <http://www.gnu.org/licenses/>.
+*/
+/**
+ * Optimiser component that can create new unique names.
+ */
+
+#include <libyul/optimiser/NameDispenser.h>
+
+using namespace std;
+using namespace dev;
+using namespace dev::yul;
+
+string NameDispenser::newName(string const& _prefix)
+{
+	string name = _prefix;
+	size_t suffix = 0;
+	while (name.empty() || m_usedNames.count(name))
+	{
+		suffix++;
+		name = _prefix + "_" + to_string(suffix);
+	}
+	m_usedNames.insert(name);
+	return name;
+}