Class: SimpleEnum::EnumHash

Inherits:
Hash
  • Object
show all
Defined in:
lib/simple_enum/enum_hash.rb

Overview

Internal hash class, used to handle the enumerations et al. Works like to original Hash class, but with some added value, like access to

Instance Method Summary collapse

Constructor Details

#initialize(hsh) ⇒ EnumHash

Returns a new instance of EnumHash.



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# File 'lib/simple_enum/enum_hash.rb', line 9

def initialize(hsh)
  hsh = hsh.to_hash_magic unless hsh.is_a?(Hash)
  
  @reverse_sym_lookup = {}
  @sym_value_lookup = {}
  
  hsh.each do |k,v|
    sym = k.to_enum_sym
    self[k] = v
    @reverse_sym_lookup[sym] = k
    @sym_value_lookup[sym] = v
  end
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(symbol, *args) ⇒ Object 



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# File 'lib/simple_enum/enum_hash.rb', line 27

def method_missing(symbol, *args)
  if @sym_value_lookup.has_key?(symbol.to_enum_sym)
    return @reverse_sym_lookup[symbol.to_enum_sym] if args.first
    self[symbol]
  else
    super
  end
end

Instance Method Details

#default(k = nil) ⇒ Object 



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# File 'lib/simple_enum/enum_hash.rb', line 23

def default(k = nil)
  @sym_value_lookup[k.to_enum_sym] if k
end