61 lines
1.2 KiB
Ruby
61 lines
1.2 KiB
Ruby
# Usually key value pairs are handled something like this:
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#
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# h = {}
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# h[:boy] = 'John'
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# h[:girl] = 'Mary'
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# h[:boy] # => 'John'
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# h[:girl] # => 'Mary'
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#
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# Using <tt>OrderedOptions</tt>, the above code could be reduced to:
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#
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# h = ActiveSupport::OrderedOptions.new
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# h.boy = 'John'
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# h.girl = 'Mary'
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# h.boy # => 'John'
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# h.girl # => 'Mary'
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#
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module ActiveSupport #:nodoc:
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class OrderedOptions < Hash
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alias_method :_get, :[] # preserve the original #[] method
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protected :_get # make it protected
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def []=(key, value)
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super(key.to_sym, value)
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end
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def [](key)
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super(key.to_sym)
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end
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def method_missing(name, *args)
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name_string = name.to_s
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if name_string.chomp!('=')
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self[name_string] = args.first
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else
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self[name]
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end
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end
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def respond_to?(name)
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true
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end
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end
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class InheritableOptions < OrderedOptions
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def initialize(parent = nil)
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if parent.kind_of?(OrderedOptions)
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# use the faster _get when dealing with OrderedOptions
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super() { |h,k| parent._get(k) }
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elsif parent
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super() { |h,k| parent[k] }
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else
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super()
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end
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end
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def inheritable_copy
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self.class.new(self)
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end
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end
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end
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