Class: Bitmap

Inherits:
Object
  • Object
show all
Defined in:
lib/bitmap.rb

Overview

–

         DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
                 Version 2, December 2004

         DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION

0. You just DO WHAT THE FUCK YOU WANT TO.

++

Defined Under Namespace

Classes: Value

Instance Method Summary collapse

Constructor Details

#initialize(data) ⇒ Bitmap

Returns a new instance of Bitmap.



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# File 'lib/bitmap.rb', line 54

def initialize (data)
	if data.first.first.is_a? Integer
		data = Hash[data.map(&:reverse)]
	end

	@bits = data
	@bits.freeze
end

Instance Method Details

#[](*args) ⇒ Object 



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# File 'lib/bitmap.rb', line 63

def [] (*args)
	args.flatten!
	args.compact!

	if args.length == 1 && args.first.is_a?(Integer)
		Value.new(self, args.first, args.first.to_s(2).reverse.chars.each_with_index.map {|bit, index|
			next if bit.to_i.zero?

			@bits.key("#{bit}#{'0' * index}".to_i(2)) or raise ArgumentError, "unknown bit at #{index}"
		}.compact)
	else
		Value.new(self, args.map {|arg|
			@bits[arg] or @bits[arg.to_s.to_sym] or raise ArgumentError, "unknown symbol #{arg}"
		}.inject {|a, b|
			a | b
		}, args)
	end
end

#all ⇒ Object 



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# File 'lib/bitmap.rb', line 82

def all
	Value.new(self, @bits.values.inject {|a, b|
		a | b
	}, @bits.keys)
end

#fields ⇒ Object 



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# File 'lib/bitmap.rb', line 88

def fields
	@bits.keys
end

#inspect ⇒ Object 



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# File 'lib/bitmap.rb', line 92

def inspect
	"#<#{self.class.name}: #{@bits.map { |name, bit| "#{bit.to_s(16)}=#{name}" }.join ' '}>"
end