The parser to call.
Accept file name arguments and process them one-by-one by passing a reader on the file to process.
Accept file name arguments and process them one-by-one by passing a reader on the file to process. The resulting value is printed.
Process the file given by the argument reader and return some useful result.
Process the file given by the argument reader and return some useful result. This default implementation parses the input and returns the parser result.
Main program for TIL chairmarks that just parse.