location_parser_gist.rb

require 'parslet'
require 'parslet/convenience'
require 'awesome_print'
require 'byebug'

class LocationParser < Parslet::Parser

  # literals
  rule(:space)   { str(' ') }
  rule(:spaces)  { space.repeat(0) }

  rule(:comma)   { str(',') }

  # composite literals
  rule(:newline)        { str("\r").maybe >> str("\n") }
#  rule(:blank_line)     { spaces >> newline >> spaces }

  # grammar structure
  rule(:line)           { ( address_part.as(:address_part) >> comma.maybe >> space.maybe ) >> newline.maybe }

  # NORTH HENRY STREET
  rule(:address_part)     { match('[[:print:]&&[^,]]').repeat(1) }

  rule(:new_string) { line.repeat }

  root(:new_string)
end

str = "165 HOPKINS STREET, HOPKINS STREET between THROOP AVENUE and TOMPKINS AVENUE, 159 HOPKINS STREET, TOMPKINS AVENUE between FLUSHING AVENUE and PARK AVENUE, 630 FLUSHING AVENUE"


def run_parse(str)
  begin
    x = LocationParser.new.parse(str)

    puts "---\n#{x}\n---"

  rescue Parslet::ParseFailed => failure
    puts failure.cause.ascii_tree

    print "\n"
    ap str
  end
end