JezK
Edit File: iset.rb
#-- # # # # Copyright (c) 1999-2006 Minero Aoki # # This program is free software. # You can distribute/modify this program under the same terms of ruby. # see the file "COPYING". # #++ module Racc # An "indexed" set. All items must respond to :ident. class ISet def initialize(a = []) @set = a end attr_reader :set def add(i) @set[i.ident] = i end def [](key) @set[key.ident] end def []=(key, val) @set[key.ident] = val end alias include? [] alias key? [] def update(other) s = @set o = other.set o.each_index do |idx| if t = o[idx] s[idx] = t end end end def update_a(a) s = @set a.each {|i| s[i.ident] = i } end def delete(key) i = @set[key.ident] @set[key.ident] = nil i end def each(&block) @set.compact.each(&block) end def to_a @set.compact end def to_s "[#{@set.compact.join(' ')}]" end alias inspect to_s def size @set.nitems end def empty? @set.nitems == 0 end def clear @set.clear end def dup ISet.new(@set.dup) end end # class ISet end # module Racc