From: Uwe Schmitt <schmitt@...>
Date: 2005-12-09T01:32:35+09:00
Subject: ruby newby



Hi,

I'm trying to write a parser for cooking recipes.
It looks like this:

-----
require 'bspmess'
class Parser

    STATES = [ :FIND_START, :SCAN_HEADER]
    
    methods = { :FIND_START => self.find_start,
                :SCAN_HEADER => self.scan_header
              }

    def initialize(msg)
        @msg = msg  
        @state = :FIND_START
    end
    
    def run
        @msg.each { |line|
             scan line
        }
    end

    def scan(line)
        methods[@state].call(line)
    end
    
    def find_start(line)
        puts "find_start "
        @state = :SCAN_HEADER
    end
        
    def scan_header(line)
        puts "scan header"
    end
    
    
end


p = Parser.new(MSG)
p.run 

-----

I get an error when the scan method is called first:
   undefined method `find_start' for Parser:Class (NoMethodError)

Who can help me ?

Thanks in advance, 

Uwe