pub fn stream_to_parser_with_base_dir<'a>(
sess: &'a ParseSess,
) -> Parser<'a>
Given a stream, the
ParseSess and the base directory, produces a parser.
Use this function when you are creating a parser from the token stream and also care about the current working directory of the parser (e.g., you are trying to resolve modules defined inside a macro invocation).
The main usage of this function is outside of rustc, for those who uses libsyntax as a library. Please do not remove this function while refactoring just because it is not used in rustc codebase!