1 files changed, 85 insertions, 0 deletions
diff --git a/libjulia/optimiser/Disambiguator.cpp b/libjulia/optimiser/Disambiguator.cpp
new file mode 100644
index 00000000..df2984e5
--- /dev/null
+++ b/libjulia/optimiser/Disambiguator.cpp
@@ -0,0 +1,85 @@
+/*
+	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 makes all identifiers unique.
+ */
+
+#include <libjulia/optimiser/Disambiguator.h>
+
+#include <libsolidity/inlineasm/AsmData.h>
+#include <libsolidity/inlineasm/AsmScope.h>
+
+#include <libsolidity/interface/Exceptions.h>
+
+using namespace std;
+using namespace dev;
+using namespace dev::julia;
+using namespace dev::solidity;
+
+using Scope = dev::solidity::assembly::Scope;
+
+string Disambiguator::translateIdentifier(string const& _originalName)
+{
+	solAssert(!m_scopes.empty() && m_scopes.back(), "");
+	Scope::Identifier const* id = m_scopes.back()->lookup(_originalName);
+	solAssert(id, "");
+	if (!m_translations.count(id))
+	{
+		string translated = _originalName;
+		size_t suffix = 0;
+		while (m_usedNames.count(translated))
+		{
+			suffix++;
+			translated = _originalName + "_" + std::to_string(suffix);
+		}
+		m_usedNames.insert(translated);
+		m_translations[id] = translated;
+	}
+	return m_translations.at(id);
+}
+
+void Disambiguator::enterScope(Block const& _block)
+{
+	enterScopeInternal(*m_info.scopes.at(&_block));
+}
+
+void Disambiguator::leaveScope(Block const& _block)
+{
+	leaveScopeInternal(*m_info.scopes.at(&_block));
+}
+
+void Disambiguator::enterFunction(FunctionDefinition const& _function)
+{
+	enterScopeInternal(*m_info.scopes.at(m_info.virtualBlocks.at(&_function).get()));
+}
+
+void Disambiguator::leaveFunction(FunctionDefinition const& _function)
+{
+	leaveScopeInternal(*m_info.scopes.at(m_info.virtualBlocks.at(&_function).get()));
+}
+
+void Disambiguator::enterScopeInternal(Scope& _scope)
+{
+	m_scopes.push_back(&_scope);
+}
+
+void Disambiguator::leaveScopeInternal(Scope& _scope)
+{
+	solAssert(!m_scopes.empty(), "");
+	solAssert(m_scopes.back() == &_scope, "");
+	m_scopes.pop_back();
+}