Errors I get using Treetop to parse

gistfile1.rb

irb(main):002:0> Parser.parse "123"
RuntimeError: Parse error at offset: 0
  from /Users/rsahae/dev/badaal/lib/badaal/parser.rb:27:in `parse'
	from (irb):2
	from /Users/rsahae/.rvm/rubies/ruby-1.9.3-p327/bin/irb:18:in `<main>'
irb(main):003:0> Parser.parse "123.123"
=> FloatLiteral+Float2 offset=0, "123.123":
  SyntaxNode offset=0, ""
  SyntaxNode offset=0, "123":
    SyntaxNode offset=0, "1"
    SyntaxNode offset=1, "2"
    SyntaxNode offset=2, "3"
  SyntaxNode+Float0 offset=3, ".123":
    SyntaxNode offset=3, "."
    SyntaxNode offset=4, "123":
      SyntaxNode offset=4, "1"
      SyntaxNode offset=5, "2"
      SyntaxNode offset=6, "3"