The type of a line.
val of_line_index : Source_descr.t -> Grace.Line_index.t -> tof_line_index sd idx returns the line at index idx in source sd.
val of_byte_index : Source_descr.t -> Grace.Byte_index.t -> tof_byte_index sd idx returns the line containing idx in source sd.
val start : t -> Grace.Byte_index.tstart t returns the byte index of the (inclusive) start position of the line.
val stop : t -> Grace.Byte_index.tstop t returns the byte index of the (exclusive) stop position of the line.
val split : t -> Grace.Byte_index.t * Grace.Byte_index.tsplit t returns the pair of byte indices of the line t.
val last : Source_descr.t -> tlast sd returns the last line in the source sd.
val slice : t -> sd:Source_descr.t -> stringslice t ~sd reads the slice of bytes defined by the line's range.
Invalid_argment if the source descriptor's underlying source is not equal to the line range's source.