A line reader from a that can provide precise source position
public struct LineReader
kind:method, kind:property, kind:ctor. Press Esc to clear.LineReader(String)Initializes a new instance of the LineReader class.SourcePositionGets the char position of the line. Valid for the next line before calling ReadLine().ReadLine()Reads a new line from the underlying and update the SourcePosition for the next line.