Data.String.Interpolate.Parse

Each section here is a list of lines.

Content here is defined by the contiguous sequence of lines begining with the first non-blank line and ending with the last non-blank line

Like parseInterpSegments, but for cases where we need to do more complicated transformations on the input. Separates the interpolation input into its content, whitespace header, and whitespace footer.

Given the raw input from a quasiquote, parse it into the information we need to output the actual expression.

Returns an error message if parsing fails.