Support multiple assembly front and backends.

1 files changed, 85 insertions, 0 deletions

diff --git a/libsolidity/interface/MultiBackendAssemblyStack.cpp b/libsolidity/interface/MultiBackendAssemblyStack.cpp
new file mode 100644
index 00000000..cf16b627
--- /dev/null
+++ b/libsolidity/interface/MultiBackendAssemblyStack.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/>.
+*/
+/**
+ * Full assembly stack that can support EVM-assembly and JULIA as input and EVM, EVM1.5 and
+ * eWasm as output.
+ */
+
+
+#include <libsolidity/interface/MultiBackendAssemblyStack.h>
+
+#include <libsolidity/parsing/Scanner.h>
+#include <libsolidity/inlineasm/AsmPrinter.h>
+#include <libsolidity/inlineasm/AsmParser.h>
+#include <libsolidity/inlineasm/AsmAnalysis.h>
+#include <libsolidity/inlineasm/AsmCodeGen.h>
+
+#include <libevmasm/Assembly.h>
+
+using namespace std;
+using namespace dev;
+using namespace dev::solidity;
+
+
+Scanner const& MultiBackendAssemblyStack::scanner() const
+{
+	solAssert(m_scanner, "");
+	return *m_scanner;
+}
+
+bool MultiBackendAssemblyStack::parseAndAnalyze(std::string const& _sourceName, std::string const& _source)
+{
+	m_analysisSuccessful = false;
+	m_scanner = make_shared<Scanner>(CharStream(_source), _sourceName);
+	m_parserResult = assembly::Parser(m_errors, m_input == Input::JULIA).parse(m_scanner);
+	if (!m_errors.empty())
+		return false;
+	solAssert(m_parserResult, "");
+
+	m_analysisInfo = make_shared<assembly::AsmAnalysisInfo>();
+	assembly::AsmAnalyzer analyzer(*m_analysisInfo, m_errors);
+	m_analysisSuccessful = analyzer.analyze(*m_parserResult);
+	return m_analysisSuccessful;
+}
+
+eth::LinkerObject MultiBackendAssemblyStack::assemble()
+{
+	solAssert(m_analysisSuccessful, "");
+	solAssert(m_parserResult, "");
+	solAssert(m_analysisInfo, "");
+
+	switch (m_targetMachine)
+	{
+	case Machine::EVM:
+	{
+		auto assembly = assembly::CodeGenerator(m_errors).assemble(*m_parserResult, *m_analysisInfo);
+		return assembly.assemble();
+	}
+	case Machine::EVM15:
+		solUnimplemented("EVM 1.5 backend is not yet implemented.");
+	case Machine::eWasm:
+		solUnimplemented("eWasm backend is not yet implemented.");
+	}
+	// unreachable
+	return eth::LinkerObject();
+}
+
+string MultiBackendAssemblyStack::print()
+{
+	solAssert(m_parserResult, "");
+	return assembly::AsmPrinter(m_input == Input::JULIA)(*m_parserResult);
+}