From: Daniel Sheppard <daniels@...>
Date: 2005-09-26T12:52:35+09:00
Subject: Re: Overloading

Ahh, I think I understand what you're doing.

Something like this maybe?

class RegExProcessor
      attr_reader :results
	def initialize(pattern, location)
		@pattern, @location = pattern, location
		@result = []
	end 
	def process_line(line)
		if m = @pattern.match(line)
			@results << m[@location]
		end
	end
end

class ProcProcessor
      attr_reader :results
	def initialize(&block)
		@block = block
		@results = []
	end
	def process_line(line)
		if x = @block.call(line)
			@result << x
		end
	end
end


processors = [
  bracketThing = RegExProcessor.new(/#include\s*[<"](.*)[>"]/, 1),
  specialThing = ProcProcessor.new { |line| line[2..4] + line[8..12] },
]

File.open("foo.cpp") do |f|
  f.each_line do |line|
    processors.each {|p| p.process_line(line) }
  end
end

includesArr = bracketThing.results
specialArr = specialThing.results



-----Original Message-----
From: Ben [mailto:benbelly@gmail.com] 
Sent: Monday, 26 September 2005 11:57 AM
To: ruby-talk ML
Subject: Re: Overloading

On 9/25/05, Daniel Sheppard <daniels@pronto.com.au> wrote:
> I don't quite understand your original problem (wouldn't the the 
> ProcExtractor and the PatternLocationExtractor be two different 
> things?),

Well, maybe.  I would like to pass through the files just once - there
are likely to be several hundred files, and they will sometimes be quite
long.  I was hoping to use Ruby's ability to store multiple types to do
that.  Hmm.  Maybe . . .
I'll make a pattern / location parser, and the extracter will just hold
parsers.  That makes more sense.  Thanks.
It always helps to talk things out, eh?  :)

-Ben



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