Implement yul syntax tests

test/libyul/SyntaxTest.h

@@ -0,0 +1,53 @@
+/*
+	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/>.
+*/
+
+#pragma once
+
+#include <test/CommonSyntaxTest.h>
+#include <libyul/Dialect.h>
+
+namespace solidity::yul::test
+{
+
+using solidity::test::SyntaxTestError;
+
+class SyntaxTest: public solidity::test::CommonSyntaxTest
+{
+public:
+	static std::unique_ptr<TestCase> create(Config const& _config)
+	{
+		return std::make_unique<SyntaxTest>(_config.filename, _config.evmVersion);
+	}
+	static std::unique_ptr<TestCase> createErrorRecovery(Config const& _config)
+	{
+		return std::make_unique<SyntaxTest>(_config.filename, _config.evmVersion);
+	}
+	SyntaxTest(std::string const& _filename, langutil::EVMVersion _evmVersion):
+		CommonSyntaxTest(_filename, _evmVersion) {}
+	virtual ~SyntaxTest() {}
+
+	/// Validates the settings, i.e. moves them from m_settings to m_validatedSettings.
+	/// Throws a runtime exception if any setting is left at this class (i.e. unknown setting).
+	/// Returns true, if the test case is supported in the current environment and false
+	/// otherwise which causes this test to be skipped.
+	/// This might check e.g. for restrictions on the EVM version.
+	bool validateSettings(langutil::EVMVersion _evmVersion) override;
+protected:
+	void parseAndAnalyze() override;
+};
+
+}