Adding a ForStatement solidity AST Node.

- Adding ForStatement node
- Implemented Parsing for ForStatement
- A simple parsing test for the ForStatement
- Work in progress

solidityParser.cpp

@@ -49,6 +49,23 @@ ASTPointer<ContractDefinition> parseText(std::string const& _source)
 	BOOST_FAIL("No contract found in source.");
 	return ASTPointer<ContractDefinition>();
 }
+
+ASTPointer<ContractDefinition> parseTextExplainError(std::string const& _source)
+{
+	try
+	{
+		return parseText(_source);
+	}
+	catch (Exception const& exception)
+	{
+		// LTODO: Print the error in a kind of a better way?
+		// In absence of CompilerStack we can't use SourceReferenceFormatter
+		cout << "Exception while parsing: " << diagnostic_information(exception);
+		// rethrow to signal test failure
+		throw exception;
+	}
+}
+
 }
 
 
@@ -357,6 +374,17 @@ BOOST_AUTO_TEST_CASE(while_loop)
 	BOOST_CHECK_NO_THROW(parseText(text));
 }
 
+BOOST_AUTO_TEST_CASE(for_loop)
+{
+	char const* text = "contract test {\n"
+					   "  function fun(uint256 a) {\n"
+					   "    for (uint256 i = 0; i < 10; i++;)\n"
+					   "    { uint256 x = i; break; continue; }\n"
+					   "  }\n"
+					   "}\n";
+	BOOST_CHECK_NO_THROW(parseTextExplainError(text));
+}
+
 BOOST_AUTO_TEST_CASE(if_statement)
 {
 	char const* text = "contract test {\n"