class Input;
+/**
+Base class for parse modes.
+*/
class ParserMode
{
protected:
Input ∈
- std::string src;
+ const std::string &src;
ParserMode(Input &i, const std::string &s): in(i), src(s) { }
public:
virtual ~ParserMode() { }
- virtual Statement parse() =0;
+ virtual Statement parse() = 0;
};
} // namespace DataFile