Module: QuickAttr

Defined in:
lib/quick_attr.rb

Instance Method Summary collapse

Instance Method Details

#quick_array(*args) ⇒ Object 



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# File 'lib/quick_attr.rb', line 48

def quick_array (*args)
  quick_klass(Array,*args)
end

#quick_attr(*args) ⇒ Object

QUICK_ATTR_NIL = “QUICK_ATTR_NIL”.freeze



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# File 'lib/quick_attr.rb', line 3

def quick_attr (*args)
  args.each {|var|
    ivar = "@#{var}"
# send :define_method, var, proc {|arg|
#   return send (:instance_variable_get, ivar) if arg.nil? 
#   send (:instance_variable_set, ivar, arg)
#   self
#   }
  class_eval "def #{var} (*arg,&block)
    raise \"cannot call #{var} with block and (#{args.join(',')}\" if arg.length > 0 and block
    arg[0] = block if block
    return #{ivar} if arg.length == 0
    #{ivar} = arg[0] if arg.length == 1
    #{ivar} = arg if arg.length > 1
    self
  end"

  #class_eval "def #{var} (arg=(QUICK_ATTR_NIL = \"\"))
  #  return #{ivar} if arg.object_id == QUICK_ATTR_NIL.object_id
  #  #{ivar} = arg
  #  self
  #end"
  }
end

#quick_hash(*args) ⇒ Object 



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# File 'lib/quick_attr.rb', line 51

def quick_hash (*args)
  quick_klass(Hash,*args)
end

#quick_klass(*args) ⇒ Object 



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# File 'lib/quick_attr.rb', line 28

def quick_klass (*args)
  unless args.first.is_a? Class then
   raise "quick_klass's first argument must be a class, was #{args.first}, try Hash, or Array for example"
  end
   klass = args.shift 
  args.each {|var|
    ivar = "@#{var}"
  class_eval "def #{var} (*arg)
     if arg.length == 0 then
      return #{ivar} = #{ivar} || #{klass.name}.new
    else
      #{ivar} = arg.is_a?(#{klass}) ? arg : #{klass}.new(arg)
      self
    end
  end"
  
  }

end