Add CLI option to soltest to always use ABIEncoderV2

Author: axic

test/Options.cpp

@@ -55,6 +55,8 @@ Options::Options()
 		}
 		else if (string(suite.argv[i]) == "--optimize")
 			optimize = true;
+		else if (string(suite.argv[i]) == "--abiencoderv2")
+			useABIEncoderV2 = true;
 		else if (string(suite.argv[i]) == "--evm-version")
 		{
 			evmVersionString = i + 1 < suite.argc ? suite.argv[i + 1] : "INVALID";

test/Options.h

@@ -41,6 +41,7 @@ struct Options: boost::noncopyable
 	bool optimize = false;
 	bool disableIPC = false;
 	bool disableSMT = false;
+	bool useABIEncoderV2 = false;
 
 	void validate() const;
 	solidity::EVMVersion evmVersion() const;

test/libsolidity/SolidityExecutionFramework.h

@@ -65,7 +65,10 @@ class SolidityExecutionFramework: public dev::test::ExecutionFramework
 	)
 	{
 		// Silence compiler version warning
-		std::string sourceCode = "pragma solidity >=0.0;\n" + _sourceCode;
+		std::string sourceCode = "pragma solidity >=0.0;\n";
+		if (dev::test::Options::get().useABIEncoderV2 && _sourceCode.find("pragma experimental ABIEncoderV2;") == std::string::npos)
+			sourceCode += "pragma experimental ABIEncoderV2;\n";
+		sourceCode += _sourceCode;
 		m_compiler.reset(false);
 		m_compiler.addSource("", sourceCode);
 		m_compiler.setLibraries(_libraryAddresses);