Class: GeoRuby::SimpleFeatures::TokenizerStructure

Inherits:
Object
  • Object
show all
Defined in:
lib/geo_ruby/simple_features/ewkt_parser.rb

Instance Method Summary collapse

Constructor Details

#initialize(ewkt) ⇒ TokenizerStructure

Returns a new instance of TokenizerStructure.



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# File 'lib/geo_ruby/simple_features/ewkt_parser.rb', line 293

def initialize(ewkt)
  @ewkt = ewkt
  @scanner = StringScanner.new(ewkt)
  @regex = /\s*([\w.-]+)s*/
end

Instance Method Details

#check_next_token ⇒ Object 



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# File 'lib/geo_ruby/simple_features/ewkt_parser.rb', line 316

def check_next_token
  check = @scanner.check(@regex)
  if check.nil?
    if @scanner.eos?
      nil
    else
      pos = @scanner.pos
      while @ewkt[pos].chr == ' '
        pos+=1
      end
      @ewkt[pos].chr
    end
  else
    check
  end
end

#get_next_token ⇒ Object 



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# File 'lib/geo_ruby/simple_features/ewkt_parser.rb', line 299

def get_next_token
  if @scanner.scan(@regex).nil?
    if @scanner.eos?
      nil
    else
      ch = @scanner.getch
      while ch == ' '
        ch = @scanner.getch
      end
      ch
    end
  else
    @scanner[1]
  end
end