Class: Enum

Inherits:
Object show all
Defined in:
lib/enum.rb

Overview

:nodoc:

Direct Known Subclasses

Cardia::TransactionStatus

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(a_code) ⇒ Enum

Returns a new instance of Enum.



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# File 'lib/enum.rb', line 22

def initialize(a_code)
  @code = a_code.to_i unless a_code.nil?
end

Instance Attribute Details

#code ⇒ Object (readonly)

Returns the value of attribute code.



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# File 'lib/enum.rb', line 20

def code
  @code
end

Class Method Details

.define_constructor(name, a_code) ⇒ Object 



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# File 'lib/enum.rb', line 45

def self.define_constructor(name, a_code)
  meta_def(name.to_sym) do
    return self.new(a_code)
  end
end

.enums ⇒ Object 



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# File 'lib/enum.rb', line 30

def self.enums
  @enums ||= {}
end

.map(name, a_code, description = nil) ⇒ Object

Adds a new enum code. If description isn’t provided, name is used instead



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# File 'lib/enum.rb', line 36

def self.map(name, a_code, description=nil)
  enum_description = (description || name.to_s)
  self.enums[a_code] = enum_description
  self.define_constructor(name, a_code)
  define_method "#{name}?" do
    return @code == a_code
  end
end

Instance Method Details

#==(an_object) ⇒ Object 



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# File 'lib/enum.rb', line 26

def ==(an_object)
  self.class == an_object.class and self.code == an_object.code
end

#description ⇒ Object 



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# File 'lib/enum.rb', line 55

def description
  self.class.enums[@code]
end

#to_s ⇒ Object 



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

def to_s
  description
end